CN108730795A - Light projection device - Google Patents

Abstract

The present invention discloses a light projection device, which includes a lens unit, a reflection unit and a light emitting unit. The lens unit has a lens focus and a lens optical axis, and the lens optical axis passes through a reference plane. The reflection unit includes a first reflection structure and a second reflection structure, and the first reflection structure has a first focus and a second focus. The second reflection structure has a first focus and a second focus. A first light emitting structure of the light emitting unit corresponds to the first focus of the first reflection structure. A second light emitting structure of the light emitting unit corresponds to the first focus of the second reflection structure. A first projection light generated by the first light emitting structure can be projected in the direction of the first reflection structure and the direction of the reference plane, and a second projection light generated by the second light emitting structure can be projected in the direction of the second reflection structure and the direction of the reference plane. Thereby, the present invention achieves the effect of improving the light focusing efficiency.

Description

light projection device

technical field

The invention relates to a light projection device, in particular to a light projection device capable of improving light-gathering efficiency.

Background technique

First of all, in the prior art, whether it is a car light (high light or high light auxiliary light) or a searchlight, etc., it is required to focus light to achieve the purpose of long-distance irradiation.

However, the light concentrating effect of the light projection device in the prior art is not good. Therefore, how to provide a light projection device with high efficiency and light effect to overcome the above-mentioned defects has become a problem for those skilled in the art. important issues to be addressed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a light projection device for the deficiencies of the prior art.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a light projection device, which includes a lens unit, a reflection unit and a light emitting unit. The lens unit has a lens focal point and a lens optical axis passing through the lens focal point, the lens optical axis passes through a reference plane and is parallel to the reference plane, and the reference plane has a first outer surface and an opposite on the second outer surface of the first outer surface. The reflective unit includes a first reflective structure and a second reflective structure, the first reflective structure has a first focal point located adjacent to the first outer surface and outside the first outer surface and corresponding to the A second focal point of the first focal point of the first reflective structure, the second reflective structure has a first focal point located adjacent to the second outer surface and located outside the second outer surface and a corresponding to the A second focal point of the first focal point of the second reflective structure. The light emitting unit includes a first light emitting structure and a second light emitting structure, the first light emitting structure corresponds to the first focal point of the first reflective structure, and the first light emitting structure is disposed adjacent to the first light emitting structure an outer surface and located at a position other than the first outer surface, the second light emitting structure corresponds to the first focal point of the second reflective structure, and the second light emitting structure is disposed adjacent to the second outer surface side and at a position other than the second outer surface, wherein a first projection light generated by the first light-emitting structure can be projected toward the direction of the first reflective structure and the direction of the reference plane, the A second projection light generated by the second light emitting structure can be projected towards the direction of the second reflective structure and the direction of the reference plane.

Furthermore, a line connecting the first focal point of the first reflective structure and the first focal point of the second reflective structure is defined as a preset axis, and the preset axis is connected to the lens There is a preset angle between 80 degrees and 100 degrees between the optical axes.

Furthermore, the first light-emitting structure has a first light-emitting surface, and the first projected light can be directed toward the first reflective structure along a first normal direction of the first light-emitting surface and Projected in the direction of the reference plane, the second light-emitting structure has a second light-emitting surface, and a second projection light generated by the second light-emitting structure can follow a second direction of the second light-emitting surface The direction of the line is projected toward the direction of the second reflective structure and the direction of the reference plane, wherein the first projected light is reflected by the first reflective structure to form a light beam passing through the first reflective structure. The first reflected light of the second focal point, the second projected light is reflected by the second reflective structure to form a second reflected light that passes through the second focal point of the second reflective structure.

Furthermore, a first axis can pass through the first focal point of the first reflective structure and the optical axis of the lens, and a second axis can pass through the first focal point of the second reflective structure and the optical axis of the lens. The optical axis of the lens, wherein, the lens unit has a light-receiving conical surface, the light-receiving conical surface has a first extension section and a second extension section, and the first extension section corresponds to the first reflection structure The first focus of the second extension corresponds to the first focus of the second reflective structure, wherein the first axis is substantially perpendicular to the first extension, and the second axis is substantially perpendicular to the second extension.

Further, the first focal point of the first reflective structure and the first focal point of the second reflective structure are both located between the first extension segment and the second extension segment or at the The first extension passes through the first focal point of the first reflective structure and the second extension passes through the first focal point of the second reflective structure.

Furthermore, the reflective unit further includes a reflective surface located on the first reflective structure and the second reflective structure, and there is an intersection point between the optical axis of the lens and the reflective surface, wherein, There is a first intersection point between the first axis and the optical axis of the lens, a second intersection point between the second axis and the optical axis of the lens, and the distance between the intersection point and the focal point of the lens A predetermined distance is smaller than a first distance between the first intersection point and the focus of the lens, and the predetermined distance between the intersection point and the focus of the lens is smaller than the distance between the second intersection point and the focus of the lens A second distance between.

Furthermore, there is a first predetermined axis between the intersection point and the first focus of the first reflective structure, and there is a predetermined axis between the intersection point and the first focus of the second reflection structure. a second predetermined axis, wherein the first predetermined axis and the first axis have a first predetermined angle between 7 degrees and 31 degrees, the second predetermined axis and the second axis There is a second predetermined angle between 7 degrees and 31 degrees.

Furthermore, a line connecting the first focal point of the first reflective structure and the first focal point of the second reflective structure is defined as a preset axis, and the preset axis is connected to the lens There is a cross point between the optical axes, wherein the reflective unit further includes a reflective surface located on the first reflective structure and the second reflective structure, the optical axis of the lens and the reflective surface There is an intersection point, wherein there is a first intersection point between the first axis and the optical axis of the lens, and the intersection point is located between the first intersection point and the intersection point.

Furthermore, there is a second intersection point between the second axis and the optical axis of the lens, and the intersection point is located between the second intersection point and the intersection point.

Furthermore, the second focal point of the first reflective structure is located on or adjacent to the optical axis of the lens, and the second focal point of the second reflective structure is located at the optical axis of the lens. on-axis or adjacent to the optical axis of the lens.

Furthermore, the second focal point of the first reflective structure, the second focal point of the second reflective structure, and the focal point of the lens coincide with each other.

Furthermore, the first reflective structure and the second reflective structure are connected to each other, and the optical axis of the lens passes through the joint of the first reflective structure and the second reflective structure.

Furthermore, the first light-emitting structure is adjacent to or directly disposed on the first focus of the first reflective structure, and the second light-emitting structure is adjacent to The first focal point of the second reflective structure is either directly arranged on the first focal point of the second reflective structure.

Furthermore, the reflective unit further includes a first curved reflective structure and a second curved reflective structure, the first curved reflective structure is disposed adjacent to the first outer surface and located on the first At a position other than the outer surface, the second arc reflective structure is disposed adjacent to the second outer surface and at a position other than the second outer surface.

Furthermore, the first arcuate reflective structure and the second arcuate reflective structure have parabolic curvature, the first arcuate reflective structure has a focus, and the second arcuate reflective structure has a focus, so The first light emitting structure corresponds to the focal point of the second arc reflective structure, and the second light emitting structure corresponds to the focus of the first arc reflective structure.

Furthermore, a first emitted light generated by the first light emitting structure can be projected toward the direction of the second arc reflective structure, and a second emitted light generated by the second light emitting structure can be projected toward the Direction projection of the first arc reflective structure, wherein the first outgoing light is reflected by the second arc reflective structure to form a first irradiation light, and the second outgoing light passes through the first arc reflection of the surface reflection structure to form a second irradiating light.

Furthermore, the lens unit has a light-receiving conical surface, and the reflective unit further includes an extended reflective structure, and the first reflective structure and the second reflective structure are located in the range of the light-receiving conical surface .

Furthermore, the curvature of the curved surface of the extended reflective structure is the same as the curvature of the curved surface of the first reflective structure or the curvature of the curved surface of the second reflective structure.

Furthermore, the reflective unit further includes a reflective surface located on the first reflective structure and the second reflective structure, and there is an intersection point between the optical axis of the lens and the reflective surface, wherein, A first tangent can pass through the intersection point and be tangent to the first reflective structure, and there is a first angle between the first tangent and the optical axis of the lens between 47 degrees and 64.5 degrees. Cutting angle, a second tangent can pass through the intersection point and be tangent to the second reflective structure, and there is a first angle between 47 degrees and 64.5 degrees between the second tangent and the optical axis of the lens Two cut corners.

Furthermore, the first reflective structure has an apex adjacent to the first focal point of the first reflective structure, and the apex of the first reflective structure is connected to the first focal point of the first reflective structure. There is a first short distance between the focal points, and there is a first long distance between the first focal point of the first reflective structure and the second focal point of the first reflective structure, wherein the first A long distance is greater than the first short distance, and a ratio of the first long distance to the first short distance is between 1.8 and 3.8.

Furthermore, the second reflective structure has an apex adjacent to the first focal point of the second reflective structure, and the apex of the second reflective structure is connected to the first focal point of the second reflective structure. There is a second short distance between a focal point and a second long distance between the first focal point of the second reflective structure and the second focal point of the second reflective structure, wherein the first The second long distance is greater than the second short distance, and the ratio of the second long distance to the second short distance is between 1.8 and 3.8.

Furthermore, the first reflective structure has a first end point, a second end point relative to the first end point of the first reflective structure, and an apex, wherein the first reflective structure There is a first end point distance between the first end point and the second end point of the first reflective structure, and there is a first end point distance between the apex of the first reflective structure and the optical axis of the lens. A vertical distance, the first endpoint distance is greater than the first vertical distance, and the ratio of the first endpoint distance to the first vertical distance is between 0.7 and 1.8.

Furthermore, the second reflective structure has a first end point, a second end point relative to the first end point of the second reflective structure, and an apex, wherein the second reflective structure There is a second end point distance between the first end point and the second end point of the second reflective structure, and there is a second end point distance between the apex of the second reflective structure and the optical axis of the lens. The vertical distance, the second endpoint distance is greater than the second vertical distance, and the ratio of the second endpoint distance to the second vertical distance is between 0.7 and 1.8.

Furthermore, the reflective unit further includes a third reflective structure, the light-emitting unit further includes a third light-emitting structure, and the third reflective structure has a a first focal point outside the first outer surface and a second focal point corresponding to the first focal point of the third reflective structure, the third light-emitting structure corresponds to the first focal point of the third reflective structure, and The third light-emitting structure is disposed adjacent to the first outer surface and outside the first outer surface, wherein a third projected light generated by the third light-emitting structure can be reflected toward the third The orientation of the structure as well as the orientation projection of the datum plane.

Furthermore, a plane formed by the first focal point of the first reflective structure, the first focal point of the second reflective structure, and the first focal point of the third reflective structure is defined as a preset plane , There is a preset angle between 80 degrees and 100 degrees between the preset plane and the reference plane.

Furthermore, the third light-emitting structure has a third light-emitting surface, and the third projected light can be directed toward the third reflective structure along a third normal direction of the third light-emitting surface and directional projection of the reference plane, wherein the third projected ray is reflected by the third reflective structure to form a third reflected ray that passes through the second focal point of the third reflective structure, the The third projected light is reflected by the third reflective structure to form a third reflected light that passes through the second focal point of the third reflective structure.

Furthermore, a first axis can pass through the first focal point of the first reflective structure and the optical axis of the lens, and a second axis can pass through the first focal point of the second reflective structure and the optical axis of the lens. The optical axis of the lens, and a third axis can pass through the first focal point of the third reflection structure and the optical axis of the lens, wherein the lens unit has a light-receiving conical surface, and the light-receiving conical surface has a first extension section, a second extension section and a third extension section, the first extension section corresponds to the first focal point of the first reflection structure, and the second extension section corresponds to the second reflection the first focus of the structure, the third extension corresponds to the first focus of the third reflective structure, wherein the first axis is substantially perpendicular to the first extension, the second axis substantially perpendicular to the second extension, and the third axis is substantially perpendicular to the third extension.

Furthermore, the first focal point of the first reflective structure, the first focal point of the second reflective structure, and the first focal point of the third reflective structure are all located in the first extension section, the Between the second extension section and the third extension section, or the first extension section passes through the first focal point of the first reflection structure, and the second extension section passes through the second reflection structure The first focal point of and the third extension section passes through the first focal point of the third reflective structure.

Furthermore, the reflective unit further includes a reflective surface located on the first reflective structure, the second reflective structure and the third reflective structure, and the optical axis of the lens is connected to the reflective surface. There is an intersection point, wherein there is a first intersection point between the first axis and the optical axis of the lens, a second intersection point between the second axis and the optical axis of the lens, and the third axis There is a third point of intersection with the optical axis of the lens, and a predetermined distance between the point of intersection and the focal point of the lens is smaller than a first distance between the first point of intersection and the focal point of the lens. The predetermined distance between the intersection point and the focus of the lens is less than a second distance between the second intersection point and the focus of the lens, and the predetermined distance between the intersection point and the focus of the lens is less than A third distance between the third intersection point and the focal point of the lens.

Furthermore, there is a first predetermined axis between the intersection point and the first focus of the first reflective structure, and there is a predetermined axis between the intersection point and the first focus of the second reflection structure. A second predetermined axis, a third predetermined axis exists between the intersection point and the first focal point of the third reflective structure, wherein, there is an intervening distance between the first predetermined axis and the first axis a first predetermined angle between 7 degrees and 31 degrees, a second predetermined angle between the second predetermined axis and the second axis between 7 degrees and 31 degrees, and the third predetermined axis There is a third predetermined angle between 7 degrees and 31 degrees with the third axis.

Furthermore, a plane formed by the first focal point of the first reflective structure, the first focal point of the second reflective structure, and the first focal point of the third reflective structure is defined as a preset plane , there is an intersection between the preset plane and the optical axis of the lens, wherein the reflective unit further includes a reflective surface located on the first reflective structure and the second reflective structure, the There is an intersection point between the optical axis of the lens and the reflective surface, wherein there is a first intersection point between the first axis and the optical axis of the lens, and the intersection point is located between the first intersection point and the intersection between points.

Furthermore, the second focal point of the first reflective structure is located on or adjacent to the optical axis of the lens, and the second focal point of the second reflective structure is located at the optical axis of the lens. On-axis or adjacent to the optical axis of the lens, the second focal point of the third reflective structure is located on the optical axis of the lens or adjacent to the optical axis of the lens.

Furthermore, the second focal point of the first reflective structure, the second focal point of the second reflective structure, the second focal point of the third reflective structure, and the focal point of the lens are mutually coincide.

Furthermore, the first reflective structure, the second reflective structure and the third reflective structure are connected to each other, and the optical axis of the lens passes through the first reflective structure, the second reflective structure and the The connection of the third reflective structure.

Furthermore, the reflective unit further includes a reflective surface located on the first reflective structure, the second reflective structure and the third reflective structure, and the optical axis of the lens is connected to the reflective surface. There is an intersecting point, wherein a first tangent can pass through the intersecting point and be tangent to the first reflective structure, and the angle between the first tangent and the optical axis of the lens is between 47 degrees to A first cut angle between 64.5 degrees, a second tangent can pass through the intersection point and be tangent to the second reflective structure, and the angle between the second tangent and the optical axis of the lens is between 47 degrees To a second cut angle between 64.5 degrees, a third tangent can pass through the intersection point and be tangent to the third reflective structure, and the distance between the third tangent and the optical axis of the lens is between 47 degrees to 64.5 degrees for third chamfer angles.

Furthermore, the reflective unit further includes a fourth reflective structure, the light emitting unit further includes a fourth light emitting structure, and the fourth reflective structure has a a first focal point outside the second outer surface and a second focal point corresponding to the first focal point of the fourth reflective structure, the fourth light emitting structure corresponds to the first focal point of the fourth reflective structure, and The fourth light emitting structure is disposed adjacent to the second outer surface and at a position outside the second outer surface, wherein a fourth projected light generated by the fourth light emitting structure can be reflected toward the fourth The orientation of the structure as well as the orientation projection of the datum plane.

The beneficial effect of the present invention is that the light projection device provided by the embodiment of the present invention can use "a first projected light generated by the first light-emitting structure can be directed toward the direction of the first reflective structure and the reference Projecting in the direction of the plane, a second projected light generated by the second light-emitting structure can be projected toward the direction of the second reflective structure and the direction of the reference plane, so as to achieve "improve light collection (concentration Light) efficiency" effect.

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings related to the present invention. However, the provided drawings are only for reference and description, and are not intended to limit the present invention.

Description of drawings

FIG. 1 is a schematic perspective view of a light projection device according to a first embodiment of the present invention.

FIG. 2 is another perspective view of the light projection device according to the first embodiment of the present invention.

FIG. 3 is a schematic side sectional view of the section line III-III in FIG. 2 .

FIG. 4 is a partially enlarged schematic view of part IV of FIG. 3 .

FIG. 5 is a schematic diagram of light projections produced by the first light-emitting structure and the second light-emitting structure of the light projection device on the first reflective structure and the second reflective structure respectively.

FIG. 6 is a perspective view of a light projection device according to a second embodiment of the present invention.

FIG. 7 is another perspective view of the light projection device according to the second embodiment of the present invention.

FIG. 8 is a three-dimensional schematic diagram of the position distribution of the extended reflective structure, the first reflective structure, and the second reflective structure according to the second embodiment of the present invention.

FIG. 9 is another perspective view showing the location distribution of the extended reflective structure, the first reflective structure, and the second reflective structure according to the second embodiment of the present invention.

FIG. 10 is a perspective view of a light projection device according to a third embodiment of the present invention.

FIG. 11 is another perspective view of the light projection device according to the third embodiment of the present invention.

FIG. 12 is a schematic side sectional view of the XII-XII section line in FIG. 11 .

FIG. 13 is a schematic diagram of the light patterns generated by the first light emitting structure and the second light emitting structure to the second arc reflective structure and the first arc reflective structure respectively according to the second embodiment.

FIG. 14 is a perspective view of a light projection device according to a fourth embodiment of the present invention.

FIG. 15 is another perspective view of the light projection device according to the fourth embodiment of the present invention.

FIG. 16 is a schematic rear view of a light projection device according to a fourth embodiment of the present invention.

FIG. 17 is a schematic cross-sectional view of line XVII-XVII in FIG. 16 .

FIG. 18 is a schematic cross-sectional view of line XVIII-XVIII in FIG. 16 .

FIG. 19 is a perspective view of a light projection device according to a fifth embodiment of the present invention.

FIG. 20 is another perspective view of the light projection device according to the fifth embodiment of the present invention.

Detailed ways

The following are specific examples to illustrate the implementation of the "light projection device" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the accompanying drawings of the present invention are only for simple illustration, and are not drawn according to the actual size, and shall be declared. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the technical scope of the present invention.

It should be understood that although the terms first, second, third etc. may be used herein to describe various elements or signals etc., these elements or signals should not be limited by these terms. These terms are used to distinguish one element from another element, or one signal from another signal. In addition, as used herein, the term "or" may include all combinations of any one or more of the associated listed items depending on the actual situation.

first embodiment

First, please refer to Fig. 1 to Fig. 3, Fig. 1 and Fig. 2 are three-dimensional schematic diagrams of the light projection device U according to the first embodiment of the present invention, and Fig. 3 is a side view section of the light projection device U according to the first embodiment of the present invention schematic diagram. The present invention provides a light projection device U, which includes a lens unit 1 , a reflection unit 2 and a light emitting unit 3 . It should be noted that, in order to facilitate the understanding of the present invention, only the main components are shown in the drawings, and the reflection unit 2 is mainly described as an arc surface. Those skilled in the art should understand the structure and composition of the existing light projection device U, And understand that the reflective unit 2 presented in the drawings is the reflective surface on the actual product structure. Next, preferably, the reflective unit 2 includes at least two reflective structures or a plurality of reflective structures. The first embodiment will be described with two reflective structures (the first reflective structure 21 and the second reflective structure 22). However, in other In the implementation manner (for example, the reflective unit 2 in the fourth embodiment and the fifth embodiment may include more than three reflective structures). In addition, preferably, the light emitting unit 3 also includes at least two light emitting structures or a plurality of light emitting structures, and the following first embodiment will be described with two light emitting structures (the first light emitting structure 31 and the second light emitting structure 32 ). For example, the first reflective structure 21 and the second reflective structure 22 can be composed of a plurality of curved surfaces with different curvatures or a single curved surface, for example, the reflective structures can be composed of curved surfaces or curvatures based on ellipses. In addition, the first light-emitting structure 31 and the second light-emitting structure 32 can be respectively disposed on a circuit substrate (not labeled in the figure), such as a printed circuit board (Printed circuit board, PCB) or a metal circuit board (Metal Core PCB, MCPCB) , the present invention is not limited thereto. Further, the first light-emitting structure 31 and the second light-emitting structure 32 can be a semiconductor electronic component, for example, a light-emitting diode (Light-emitting diode, LED), a laser light-emitting diode or a laser diode (Laser diode). Diode, LD), but the present invention is not limited thereto. In addition, preferably, the first light-emitting structure 31 and the second light-emitting structure 32 can be light-emitting elements that can produce surface light sources, and at the same time, the size of the light-emitting surface of the light-emitting diode can be less than 2 mm*2 mm, but the present invention does not rely on this limit. In other words, in other implementation manners, the size of the light emitting surface of the light emitting diode may be 1.06 mm*1.06 mm, or 0.75 mm*0.75 mm. It is worth noting that the light projection device U provided by the present invention can preferably be applied to the high light or high light auxiliary lights of automobile headlights. In addition, due to the light focusing ability of the light projection device U provided by the present invention is good in efficiency, Therefore, in other embodiments, it can also be applied to products such as searchlights that need to produce light focusing effects.

1 to 3, the lens unit 1 has a lens focal point 1a and a lens optical axis A passing through the lens focal point 1a, the lens optical axis A can pass through a reference plane S and be parallel to the reference plane S , that is to say, the optical axis A of the lens can coincide with the reference plane S. Further, the reference plane S has a first outer surface S1 and a second outer surface S2 opposite to the first outer surface S1, that is to say, the first outer surface S1 and the second outer surface S2 are the reference plane S Two opposite faces. It should be noted that the reference plane S in the present invention is a virtual plane, and the reference plane S is mainly defined to further define the lens unit 1 , the reflection unit 2 and the light emitting unit 3 . For example, the reference plane S can be arranged parallel to or perpendicular to a horizontal plane (not shown in the figure). However, in other embodiments, the reference plane S can also be arranged obliquely to the horizontal plane. The present invention is not based on this limit.

Based on the above, please refer to FIGS. 1 to 3 again. The reflective unit 2 may include a first reflective structure 21 and a second reflective structure 22. In the embodiment of the present invention, the overall shape and shape of the second reflective structure 22 The features may be the same as those of the first reflective structure 21 , but the present invention is not limited thereto. Therefore, when the overall shape and characteristics of the first reflective structure 21 and the second reflective structure 22 are identical to each other, the first reflective structure 21 and the second reflective structure 22 are substantially equiangularly distributed with the optical axis A of the lens as the geometric center. Further, the first reflective structure 21 has a first focal point 21 a adjacent to and outside the first outer surface S1 and a second focal point 21 b corresponding to the first focal point 21 a of the first reflective structure 21 . In other words, if FIG. 3 is taken as an illustration, the first focal point 21a of the first reflective structure 21 may be located above the first outer surface S1 of the reference plane S. As shown in FIG. In addition, the second reflective structure 22 has a first focal point 22 a adjacent to and outside the second outer surface S2 and a second focal point 22 b corresponding to the first focal point 22 a of the second reflective structure 22 . In other words, if FIG. 3 is taken as an illustration, the first focal point 22 a of the second reflective structure 22 may be located below the second outer surface S2 of the reference plane S. As shown in FIG. In addition, the first reflective structure 21 may have three inflection points (not labeled in the figure), and the second reflective structure 22 may have three inflection points (not labeled in the figure). It should be noted that, preferably, according to the embodiment of the present invention, there may not be a cut-off plate between the first reflective structure 21 and the second reflective structure 22 or other methods to change the projection of light. The structure of the light pattern generated by the device U (eg wedge-shaped structure).

Thus, as shown in FIG. 3 , the first reflective structure 21 and the second reflective structure 22 are located on two opposite sides of the reference plane S, respectively. Preferably, the second focal point 21b of the first reflective structure 21 may be located on or adjacent to the optical axis A of the lens, and the second focal point 22b of the second reflective structure 22 may be located on the optical axis A of the lens or adjacent to the optical axis A of the lens. Lens optical axis A. More preferably, the second focal point 21b of the first reflective structure 21 , the second focal point 22b of the second reflective structure 22 and the focal point 1a of the lens may coincide with each other. It is worth mentioning that the first reflective structure 21 and the second reflective structure 22 can be connected to each other, and the lens optical axis A and the reference plane S can pass through the connection between the first reflective structure 21 and the second reflective structure 22 .

Based on the above, please refer to FIG. 3 again. The light emitting unit 3 may include a first light emitting structure 31 and a second light emitting structure 32. The first light emitting structure 31 may correspond to the first focal point 21a of the first reflective structure 21, and the second light emitting structure A light emitting structure 31 may be disposed adjacent to the first outer surface S1 and outside the first outer surface S1 . In addition, the second light emitting structure 32 may correspond to the first focal point 22 a of the second reflective structure 22 , and the second light emitting structure 32 may be disposed adjacent to the second outer surface S2 and outside the second outer surface S2 . In other words, if FIG. 3 is used as an illustration, the first light emitting structure 31 may be located above the first outer surface S1 of the reference plane S, and the second light emitting structure 32 may be located below the second outer surface S2 of the reference plane S. Thereby, the first light emitting structure 31 and the second light emitting structure 32 are located on two opposite sides of the reference plane S, respectively. Preferably, the first light emitting structure 31 or the first light emitting surface 311 of the first light emitting structure 31 can be adjacent to the first focal point 21a of the first reflective structure 21 or directly arranged on the first focal point 21a of the first reflective structure 21 , while The second light emitting structure 32 or the second light emitting surface 321 of the second light emitting structure 32 can be adjacent to the first focus 22 a of the second reflective structure 22 or directly disposed on the first focus 22 a of the second reflective structure 22 . The present invention will be described in an embodiment in which the first light emitting structure 31 is disposed on the first focal point 21 a of the first reflective structure 21 , and the second light emitting structure 32 is disposed on the first focal point 22 a of the second reflective structure 22 .

Based on the above, please refer to FIG. 3 again. A first projection light P11 generated by the first light emitting structure 31 can be projected towards the direction of the first reflective structure 21 and the direction of the reference plane S, and the second light emitting structure 32 generates A second projection ray P21 can be projected towards the direction of the second reflective structure 22 and the direction of the reference plane S. In other words, according to the embodiment of the present invention, the first projection light P11 generated by the first light emitting structure 31 and the second projection light P21 generated by the second light emitting structure 32 are emitted toward the direction of the optical axis A of the lens and are Fired in a diagonally backward direction. Further, the first light emitting structure 31 may have a first light emitting surface 311, and the first projected light P11 can be directed toward the direction of the first reflective structure 21 along a first normal direction D1 of the first light emitting surface 311 and the reference The direction projection of the plane S. That is to say, the first normal direction D1 extends toward the obliquely downward rear of the lens unit 1 . In addition, the second light emitting structure 32 can have a second light emitting surface 321 , and a second projected light P21 generated by the second light emitting structure 32 can be directed toward the second light source along a second normal direction D2 of the second light emitting surface 321 . The direction of the reflective structure 22 and the direction of the reference plane S project. That is to say, the second normal direction D2 extends obliquely upward and backward of the lens unit 1 .

Thereby, as shown in FIG. 3, the reflection of the first projected light P11 by the first reflective structure 21 can form a first reflected light R11 passing through the second focal point 21b of the first reflective structure 21, and the second projected light P21 Through the reflection of the second reflective structure 22 , a second reflected ray R21 passing through the second focal point 22 b of the second reflective structure 22 can be formed.

Next, please refer to FIG. 3 and FIG. 4 together. The lens unit 1 may have a light-receiving cone surface 11 (or called a light-receiving cone angle γ, generally less than 90 degrees). According to the embodiment of the present invention, the angle of the light-receiving conical surface 11 can be between 50 degrees and 90 degrees, and the size of the lens diameter of the lens unit 1 can be between 30 millimeters and 100 millimeters, but the present invention does not This is the limit. It should be noted that the lens diameter defined here refers to the natural extension of the arc curve of the light-emitting surface of the lens toward the direction of the light-incident surface, and the diameter of the circle formed by the virtual contour that meets the light-incidence surface In other words, although the light-emitting surface of the lens unit 1 in the accompanying drawings of the present invention has an arc curve extending completely to the light-incident surface, however, in other embodiments, the lens unit 1 can be trimmed and cut to The trimmed and cut lens unit 1 still has a lens diameter between 30 mm and 100 mm according to the size of the position to be set. In addition, it should be noted that the light-receiving conical surface 11 refers to the cone-shaped range formed by extending the lens focal point 1 a to the light-incident surface of the lens unit 1 . That is to say, each lens unit 1 may have different ranges of the light-receiving conical surface 11 , such as the range surrounded by the conical surface, depending on the design characteristics. Further, for the convenience of description, a first extension section 111 and a second extension section 112 of the light-collecting tapered surface 11 will be described below. The first extension section 111 and the second extension section 112 are extension line sections extending from the light-receiving cone surface 11, and the extension direction of the first extension section 111 and the second extension section 112 is the same as that extending to the light incident surface of the lens unit 1 The direction of the upper light-receiving cone surface 11 is opposite. In addition, the first extension section 111 may correspond to the first focal point 21 a of the first reflective structure 21 , and the second extension section 112 may correspond to the first focal point 22 a of the second reflective structure 22 . For example, the first focal point 21 a of the first reflective structure 21 can be disposed adjacent to the first extension section 111 , and the first focal point 22 a of the second reflective structure 22 can be disposed adjacent to the second extension section 112 . Preferably, both the first focal point 21a of the first reflective structure 21 and the first focal point 22a of the second reflective structure 22 are located between the range surrounded by the first extending segment 111 and the second extending segment 112 , or the first extending segment The segment 111 may pass through the first focal point 21 a of the first reflective structure 21 and the second extension segment 112 may pass through the first focal point 22 a of the second reflective structure 22 , but the invention is not limited thereto. Further, preferably, according to the embodiment of the present invention, the first light-emitting surface 311 may be parallel to the first extension section 111 , and the second light-emitting surface 321 may be parallel to the second extension section 112 . More preferably, the first light-emitting surface 311 can be parallel to and aligned with the first extension section 111 , and the first extension section 111 can pass through the first focal point 21 a of the first reflective structure 21 , and the second light-emitting surface 321 can be aligned with the second extension section 111 . The segments 112 are parallel and aligned, and the second extending segment 112 can pass through the first focal point 22 a of the second reflective structure 22 , but the invention is not limited thereto. In other embodiments, the first light-emitting surface 311 may be non-parallel to the first extension section 111, and the second light-emitting surface 321 may be non-parallel to the second extension section 112. However, the first light-emitting surface 311 The normal direction D1 is still projected toward the direction of the first reflective structure 21 and the direction of the reference plane S, and the second normal direction D2 of the second light emitting surface 321 is still directed toward the direction of the second reflective structure 22 and the direction of the reference plane S. direction projection.

Next, please refer to FIG. 3 and FIG. 4 again, the light projection device U may further include a first axis T1 and a second axis T2, the first axis T1 can pass through the first focal point 21a of the first reflective structure 21 and the The lens optical axis A, the second axis T2 can pass through the first focal point 22 a of the second reflective structure 22 and the lens optical axis A. Further, the first axis T1 is substantially perpendicular to the first extension section 111 , and the second axis T2 is substantially perpendicular to the second extension section 112 . For example, if the first light-emitting surface 311 is arranged parallel to the first extension section 111 and the second light-emitting surface 321 is arranged parallel to the second extension section 112, the first axis T1 is generally aligned with the first normal direction D1 is the same, and the second axis T2 is substantially the same as the second normal direction D2, but the present invention is not limited thereto.

Based on the above, please refer back to FIG. 1 and FIG. 4, the reflective unit 2 further includes a reflective surface 2S located on the first reflective structure 21 and the second reflective structure 22, and the first projected light P11 and the second projected light Both P21 are projected towards the reflective surface 2S. Next, there is an intersecting point J0 between the optical axis A of the lens and the reflective surface. According to the embodiment of the present invention, the intersecting point J0 is also located between the first reflective structure 21 and the second reflective structure 22 . Further, as shown in FIG. 4, there may be a first intersection J1 between the first axis T1 and the lens optical axis A, a second intersection J2 between the second axis T2 and the lens optical axis A, and the intersection J0 A predetermined distance L0 between the focal point of the lens 1a is smaller than a first distance L1 between the first intersection point J1 and the focal point of the lens 1a, and a predetermined distance L0 between the intersection point J0 and the focal point of the lens 1a is smaller than the distance L0 between the second point of intersection J2 and the focal point of the lens A second distance L2 between 1a. In other words, the positions of the first intersection point J1 and the second intersection point J2 fall behind the intersection point J0.

Based on the above, please refer to FIG. 4 again. For convenience of illustration, the first projection ray P11 , the second projection ray P21 , the first reflection ray R11 and the second reflection ray R21 are not marked in FIG. 4 . In detail, there may be a first predetermined axis E1 between the intersection point J0 and the first focus 21a of the first reflective structure 21, and a second predetermined axis E1 between the intersection point J0 and the first focus 22a of the second reflective structure 22. Axis E2. There may be a first predetermined angle θ1 between the first predetermined axis E1 and the first axis T1 between 7 degrees and 31 degrees, preferably, the first predetermined angle θ1 may be between 10.5 degrees and 27.5 degrees, more preferably Preferably, the first predetermined angle θ1 may be between 13.5 degrees and 24.5 degrees, and there may be a second predetermined angle θ2 between 7 degrees and 31 degrees between the second predetermined axis E2 and the second axis T2, preferably The second predetermined angle θ2 may be between 10.5 degrees and 27.5 degrees, more preferably, the second predetermined angle θ2 may be between 13.5 degrees and 24.5 degrees. In addition, the distance between the intersection point J0 and the first intersection point J1 may be greater than 7 millimeters (mm), and the distance between the intersection point J0 and the second intersection point J2 may be greater than 7 millimeters. It should be noted that the definitions of the first predetermined axis E1 and the second predetermined axis E2 above are mainly for explaining the positions of the first focal point 21 a of the first reflective structure 21 and the first focal point 22 a of the second reflective structure 22 .

Next, as shown in FIG. 4 , a first tangent line G1 can pass through the intersection point J0 and be tangent to the reflective surface of the first reflective structure 21 (the reflective surface 2S on the first reflective structure 21), and the first There may be a first cut angle α1 between the tangent G1 and the optical axis A of the lens between 47 degrees and 64.5 degrees, preferably, the first cut angle α1 may be between 50 degrees and 61.5 degrees, more preferably , the first cutting angle α1 may be between 53 degrees and 58.5 degrees. A second tangent G2 can pass through the intersection point J0 and be tangent to the reflective surface of the second reflective structure 22 (the reflective surface 2S on the second reflective structure 22), and there can be a distance between the second tangent G2 and the optical axis A of the lens. The second cut angle α2 is between 47 degrees and 64.5 degrees. Preferably, the second cut angle α2 can be between 50 degrees and 61.5 degrees. More preferably, the second cut angle α2 can be between 53 degrees and 61.5 degrees. Between 58.5 degrees.

Next, please refer back to FIG. 4, the line connecting the first focal point 21a of the first reflective structure 21 and the first focal point 22a of the second reflective structure 22 is defined as a preset axis PA, and the preset axis PA and the lens The optical axis A can be arranged substantially vertically, or there is a predetermined angle β between the predetermined axis PA and the optical axis A of the lens between 80 degrees and 100 degrees, preferably, the predetermined angle β can be between 85 degrees to 95 degrees, more preferably, the preset angle β may be 90 degrees. In other words, when the overall shape and characteristics of the second reflective structure 22 are the same as those of the first reflective structure 21, the preset axis PA and the optical axis A of the lens can be substantially perpendicular to each other. Therefore, for the light generated by the light projection device U In terms of patterns, the light pattern above the horizontal axis HH and the light pattern below the horizontal axis HH can be substantially the same and symmetrical to each other. However, in other embodiments, when the overall shape and characteristics of the second reflective structure 22 are different from those of the first reflective structure 21, the preset axis PA may have an angle between 80° and 100° from the optical axis A of the lens. The angle β is preset, and the preset axis PA is inclined to the optical axis A of the lens (not shown in the figure). Furthermore, there may be an intersection point M between the preset axis PA and the optical axis A of the lens, and the intersection point J0 may be located between the first intersection point J1 and the intersection point M. In addition, the intersection point J0 may be located between the second intersection point J2 and the intersection point M. As shown in FIG.

1, 3 and 4, the first reflective structure 21 has a vertex 21e adjacent to the first focal point 21a of the first reflective structure 21, and the vertex 21e of the first reflective structure 21 reaches the first There is a first short distance W11 between the first focal points 21 a of the reflective structures 21 , and there is a first long distance W12 between the first focal points 21 a of the first reflective structures 21 and the second focal points 21 b of the first reflective structures 21 . According to the embodiment of the present invention, the first long distance W12 may be greater than the first short distance W11, and the ratio between the first long distance W12 and the first short distance W11 may be between 1.8 and 3.8. Preferably, the first The ratio between the long distance W12 and the first short distance W11 may be between 2.1 and 3.5, more preferably, the ratio between the first long distance W12 and the first short distance W11 may be between 2.42 and 3.2, However, the present invention is not limited thereto.

Based on the above, please refer to FIGS. 3 and 4 again. Further, the second reflective structure 22 has a vertex 22e adjacent to the first focal point 22a of the second reflective structure 22, and the vertex 22e of the second reflective structure 22 to There is a second short distance W21 between the first focal points 22a of the second reflective structure 22, and there is a second long distance W22 between the first focal point 22a of the second reflective structure 22 and the second focal point 22b of the second reflective structure 22. . According to the embodiment of the present invention, the second long distance W22 is greater than the second short distance W21, and the ratio of the second long distance W22 to the second short distance W21 can be between 1.8 and 3.8. Preferably, the second long distance W22 The ratio between the second short distance W21 and the second short distance W21 can be between 2.1 and 3.5, more preferably, the ratio between the second long distance W22 and the second short distance W21 can be between 2.42 and 3.2, but the present invention This is not the limit.

Next, please refer back to FIGS. 1 and 3 , the first reflective structure 21 may have a first end point 21c, a second end point 21d corresponding to the first end point 21c of the first reflective structure 21, and an apex 21e . Further, the first end point 21c and the second end point 21d of the first reflective structure 21 are intersection points between the first reflective structure 21 and the reference plane S. As shown in FIG. In addition, there is a first end point distance N1 between the first end point 21c of the first reflective structure 21 and the second end point 21d of the first reflective structure 21, and the distance between the apex 21e of the first reflective structure 21 and the optical axis A of the lens There is a first vertical distance V1. For example, the first end point distance N1 is greater than the first vertical distance V1, and the ratio of the first end point distance N1 to the first vertical distance V1 is between 0.7 and 1.8. Preferably, the ratio of the first end point distance N1 to the first vertical distance V1 may be between 0.9 and 1.55, more preferably, the ratio of the first end point distance N1 to the first vertical distance V1 may be between 1.19 and 1.32 Between, but the present invention is not limited thereto.

Based on the above, please refer back to FIGS. 1 and 3, the second reflective structure 22 has a first end point 22c, a second end point 22d corresponding to the first end point 22c of the second reflective structure 22, and an apex 22e . Further, the first end point 22c and the second end point 22d of the second reflective structure 22 are intersection points between the second reflective structure 22 and the reference plane S. As shown in FIG. In addition, there is a second end point distance N2 between the first end point 22c of the second reflective structure 22 and the second end point 22d of the second reflective structure 22, and there is a distance N2 between the apex 22e of the second reflective structure 22 and the optical axis A of the lens. A second vertical distance V2. For example, the second end point distance N2 is greater than the second vertical distance V2, and the ratio of the second end point distance N2 to the second vertical distance V2 may be between 0.7 and 1.8. Preferably, the ratio of the second end point distance N2 to the second vertical distance V2 may be between 0.9 and 1.55, more preferably, the ratio of the second end point distance N2 to the second vertical distance V2 may be between 1.19 and 1.32 , but the present invention is not limited thereto.

Next, please refer to FIG. 5 . FIG. 5 is a schematic diagram of light projections produced by the first light emitting structure 31 and the second light emitting structure 32 on the first reflective structure 21 and the second reflective structure 22 respectively. Thereby, through the reflection of the first reflective structure 21 and the second reflective structure 22, the light pattern generated by the light emitting unit 3 can be on the horizontal axis HH and within the range of ±5 degrees, and at the same time, on the vertical axis VV And between the range of ± 5 degrees. Preferably, the light pattern generated by the light emitting unit 3 can be within the range of ±3 degrees on the horizontal axis HH, and at the same time, be within the range of ±3 degrees on the vertical axis VV. It is worth noting that the point with the strongest light intensity will be located at the intersection point between the horizontal axis HH and the vertical axis VV within a range of ±0.75 degrees.

second embodiment

First, please refer to FIG. 6 and FIG. 7 . FIG. 6 and FIG. 7 are three-dimensional schematic diagrams of a light projection device U according to a second embodiment of the present invention. From the comparison of FIGS. 6 and 7 with FIGS. 1 and 2 , the biggest difference between the second embodiment of the present invention and the first embodiment is that the reflective unit 2 of the second embodiment further includes an extended reflective structure 27 . The extended reflective structure 27 can be connected to the first reflective structure 21 and the second reflective structure 22 . It should be noted that the features of the first reflective structure 21 , the second reflective structure 22 , the first light-emitting structure 31 and the second light-emitting structure 32 are similar to those of the aforementioned first embodiment, and will not be repeated here.

Next, please refer to FIG. 6 and FIG. 7 again, the extended reflective structure 27 may include a first extended reflective portion 271 connected to the first reflective structure 21 and a second extended reflective portion 272 connected to the second reflective structure 22 . The reference plane S may be located between the first extended reflective portion 271 and the second extended reflective portion 272, the first extended reflective portion 271 may be disposed adjacent to the first outer surface S1 and outside the first outer surface S1, and the second extended reflective portion The reflective portion 272 may be disposed adjacent to the second outer surface S2 and outside the second outer surface S2. In addition, the first extended reflective portion 271 and the second extended reflective portion 272 may be composed of curved surfaces or curvatures based on ellipses. Preferably, the curved surface curvature of the first extended reflective portion 271 is the same as that of the first reflective structure 21, and the curved surface curvature of the second extended reflective portion 272 is the same as that of the second reflective structure 22, but the present invention does not limit. In other words, the first extended reflection portion 271 is an extension of the ellipsoid reflection surface of the first reflection structure 21 , and the second extension reflection portion 272 is an extension of the ellipsoid reflection surface of the second reflection structure 22 .

Based on the above, please refer to FIG. 8 and FIG. 9 . FIG. 8 and FIG. 9 are three-dimensional schematic diagrams showing the location distribution of the extended reflective structure, the first reflective structure, and the second reflective structure according to the second embodiment of the present invention. In order to further illustrate the installation position of the extended reflection structure 27 , in FIG. 8 and FIG. 9 , the light-receiving conical surface 11 and a predetermined conical surface PC are further illustrated. The preset cone surface PC is an imaginary cone surface opposite and symmetrical to the light-collecting cone surface 11 . In detail, the first reflective structure 21 and the second reflective structure 22 are located within the range of the predetermined conical surface PC. That is to say, the size and position of the first reflective structure 21 and the second reflective structure 22 are defined by the light conical surface 11 of the lens unit 1 . In addition, the extended reflective structure 27 is located in an area outside the predetermined cone surface PC. By disposing the extended reflective structure 27 , the overall assembly convenience of the light projection device U can be improved and the light utilization of the light emitting unit 3 can be improved.

third embodiment

First, please refer to Fig. 10 to Fig. 12, Fig. 10 and Fig. 11 are three-dimensional schematic diagrams of the light projection device U according to the third embodiment of the present invention, and Fig. 12 is a side view section of the light projection device U according to the third embodiment of the present invention schematic diagram. From the comparison of Fig. 10 and Fig. 11 with Fig. 1 and Fig. 2, it can be seen that the biggest difference between the third embodiment and the first embodiment is that the light projection device U provided by the third embodiment further includes a first arc reflector structure 25 and a second arc reflective structure 26 . The first arc reflective structure 25 and the second arc reflective structure 26 can be used to increase the reutilization of the light generated by the first light emitting structure 31 and the second light emitting structure 32 . It should be noted that the features of the first reflective structure 21 , the second reflective structure 22 , the first light emitting structure 31 , and the second light emitting structure 32 are similar to those of the first embodiment, and will not be repeated here.

In detail, please refer back to FIG. 10 to FIG. 12, the first curved reflective structure 25 and the second curved reflective structure 26 can be connected to the first reflective structure 21 and the second reflective structure 22, or make the first The arc reflective structure 25 and the second arc reflective structure 26 are not connected to the first reflective structure 21 and the second reflective structure 22 . In addition, it should be noted that in order to highlight the shapes of the first reflective structure 21 and the second reflective structure 22 in the drawings, the first curved reflective structure 25 and the second curved reflective structure 26 are combined with the first reflective structure 21. and the second reflective structure 22 are shown separately. Further, the first curved reflective structure 25 can be disposed adjacent to the first outer surface S1 and outside the first outer surface S1, and the second curved reflective structure 26 can be disposed adjacent to the second outer surface S2 and located on the second outer surface S2. Positions other than the two outer sides S2. The main function of the first arcuate reflective structure 25 and the second arcuate reflective structure 26 is to further increase the reuse of the light generated by the first light emitting structure 31 and the second light emitting structure 32, although most of them are reflected by the first arcuate surface. The light generated after reflection by the structure 25 and the second arcuate reflective structure 26 is not projected into the lens unit 1, but the light generated after being reflected by the first arcuate reflective structure 25 and the second arcuate reflective structure 26 is still can be further utilized.

Preferably, as shown in FIG. 12 , in terms of the embodiment of the present invention, the first arcuate reflective structure 25 and the second arcuate reflective structure 26 can be reflective structures composed of paraboloids or curvatures. The rays on the first arcuate reflective structure 25 and the second arcuate reflective structure 26 can be parallel to the optical axis of the first arcuate reflective structure 25 (not labeled in the figure, the position of the optical axis coincides with the optical axis A of the lens) and the second arcuate reflective structure 25 respectively. The optical axis of the arc reflective structure 26 (not labeled in the figure, the position of the optical axis coincides with the optical axis A of the lens) is projected out. However, it should be noted that in other embodiments, the first arcuate reflective structure 25 and the second arcuate reflective structure 26 may also be reflective structures composed of non-parabolic curvatures. In other words, as long as the first curved reflective structure 25 and the second curved reflective structure 26 can respectively receive light from the second light emitting structure 32 and the first light emitting structure 31 , they can be further utilized.

Based on the above, please refer to FIG. 12 again. When the first arcuate reflective structure 25 and the second arcuate reflective structure 26 are reflective structures composed of parabolic surfaces or curvatures, the first arcuate reflective structure 25 may have a focal point 25a, and the second arcuate reflective structure 25 may have a focal point 25a. The two arcuate reflective structures 26 can have a focal point 26 a, the first light emitting structure 31 can correspond to the focal point 26 a of the second arcuate reflective structure 26 , and the second light emitting structure 32 can correspond to the focal point 25 a of the first arcuate reflective structure 25 . In detail, the first light emitting structure 31 is adjacent to the focal point 26a of the second arcuate reflective structure 26 or directly disposed on the focal point 26a of the second arcuate reflective structure 26, and the second light emitting structure 32 is adjacent to the first arcuate reflective structure The focal point 25 a of the structure 25 is or directly arranged on the focal point 25 a of the first arcuate reflective structure 25 . The present invention will be described in an embodiment in which the first light emitting structure 31 is disposed on the focal point 26 a of the second arcuate reflective structure 26 , and the second light emitting structure 32 is disposed on the focal point 25 a of the first arcuate reflective structure 25 . In other words, the focal point 25a of the first curved reflective structure 25 may coincide with the first focal point 22a of the second reflective structure 22, and the focal point 26a of the second curved reflective structure 26 may coincide with the first focal point of the first reflective structure 21. 21a coincides.

Thereby, as shown in FIG. 12 , a first outgoing light P12 generated by the first light emitting structure 31 can be projected towards the direction of the second curved reflective structure 26 , and a second outgoing light P22 generated by the second light emitting structure 32 It can be projected toward the direction of the first arc reflective structure 25 . Next, the first outgoing light P12 can be reflected by the second arcuate reflection structure 26 to form a first irradiation light R12, and the second outgoing light P22 can be reflected by the first arcuate reflection structure 25 to form a first irradiation light. 2. Irradiate light R22. In addition, it should be noted that the light projected on the first reflective structure 21 and the second reflective structure 22 is similar to that of the aforementioned first embodiment, and will not be repeated here. In other words, the first arcuate reflective structure 25 and the second arcuate reflective structure 26 described in the third embodiment can be applied in various embodiments.

Please refer to FIG. 13 . FIG. 13 is a schematic diagram of the light patterns generated by the first light emitting structure 31 and the second light emitting structure 32 to the second curved reflective structure 26 and the first curved reflective structure 25 respectively. It should be noted that in the schematic diagram of the light pattern, the first arcuate reflective structure 25 and the second arcuate reflective structure 26 are parabolic surfaces for example. Since the light projected on the paraboloid can form parallel light through the reflection of the parabola, the light projection device U provided by the third embodiment can preferably be applied to products requiring long-distance light irradiation such as searchlights.

Fourth embodiment

First, please refer to FIG. 14 to FIG. 17 . FIG. 14 and FIG. 15 are three-dimensional schematic views of the light projection device U according to the fourth embodiment of the present invention. From the comparison of Fig. 14 and Fig. 15 with Fig. 1 and Fig. 2, it can be seen that the biggest difference between the fourth embodiment and the first embodiment is that the light projection device U provided by the fourth embodiment further includes a third reflective structure 23 , and the light emitting unit 3 further includes a third light emitting structure 33 . For example, in the third embodiment of the present invention, the overall shapes and characteristics of the first reflective structure 21, the second reflective structure 22, and the third reflective structure 23 can be the same as each other. Therefore, the first reflective structure 21, the second reflective structure The reflective structures 22 and the third reflective structures 23 are generally equiangularly distributed with the optical axis A of the lens as the geometric center. At the same time, the first light emitting structure 31 , the second light emitting structure 32 and the third light emitting structure 33 can also be substantially equiangularly distributed with the optical axis A of the lens as the geometric center. In addition, the first reflective structure 21 , the second reflective structure 22 and the third reflective structure 23 are connected to each other, and the optical axis A of the lens passes through the joint of the first reflective structure 21 , the second reflective structure 22 and the third reflective structure 23 .

In addition, please refer to Fig. 14 to Fig. 18 again. It should be noted that the biggest difference between the fourth embodiment and the first embodiment is that the third reflective structure 23 and the third light emitting structure are further added in the fourth embodiment. The structure 33 , and the first reflective structure 21 , the second reflective structure 22 and the third reflective structure 23 are generally equiangularly distributed with the optical axis A of the lens as the geometric center. Therefore, the features of the first reflective structure 21 , the second reflective structure 22 , the first light emitting structure 31 and the second light emitting structure 32 are similar to those of the aforementioned first embodiment. At the same time, the definitions of the first reflected ray R11, the second reflected ray R21, the light-receiving cone surface 11, the first axis T1, the second axis T2, the first predetermined axis E1 and the second predetermined axis E2 are also the same as those of the aforementioned first The embodiments are similar, and will not be repeated here.

Based on the above, please refer back to FIG. 14 to FIG. 18 , and only the parts different from the first embodiment will be described below. Thereby, as shown in FIG. 17 , the plane formed by the first focal point 21a of the first reflective structure 21, the first focal point 22a of the second reflective structure 22, and the first focal point 23a of the third reflective structure 23 can be defined as a predetermined Assuming a plane PS, the preset angle β between the preset plane PS and the reference plane S can be between 80 degrees and 100 degrees, preferably, the preset angle β can be between 85 degrees and 95 degrees, and more Preferably, the preset angle β may be 90 degrees. According to the embodiment of the present invention, the preset plane PS may be substantially perpendicular to the reference plane S, but the present invention is not limited thereto. In addition, it should be noted that the content of the drawing formed by the normalized cross-sectional schematic diagram (as shown in FIG. 17 ) along the line XVII-XVII of FIG. 16 will be substantially the same as that of FIG. 3 , and will not be repeated here.

Next, as shown in FIG. 18 , in detail, the third reflective structure 23 has a first focal point 23 a located adjacent to the first outer surface S1 and outside the first outer surface S1 and a first focal point corresponding to the third reflective structure 23 A second focal point 23b of 23a. In addition, the third light emitting structure 33 may correspond to the first focal point 23 a of the third reflective structure 23 , and the third light emitting structure 33 may be disposed adjacent to and outside the first outer surface S1 . At the same time, a third projection light P31 generated by the third light emitting structure 33 can project towards the direction of the third reflective structure 23 and the direction of the reference plane S. As shown in FIG. Preferably, the second focal point 21b of the first reflective structure 21 may be located on or adjacent to the optical axis A of the lens, and the second focal point of the second reflective structure 22 may be located on the optical axis A of the lens or adjacent to the optical axis A of the lens. The optical axis A, the second focal point 23b of the third reflective structure 23 is located on the optical axis A of the lens or adjacent to the optical axis A of the lens. In this way, the second focal point 21b of the first reflective structure 21, the second focal point 22b of the second reflective structure 22, the second focal point 23b of the third reflective structure 23, and the lens focal point 1a can coincide with each other, or the first reflective A line connecting the second focal point 21b of the structure 21, the second focal point 22b of the second reflective structure 22, and the second focal point 23b of the third reflective structure 23 may form a virtual plane.

Based on the above, please refer to FIG. 18 again. The third light emitting structure 33 has a third light emitting surface 331, and the third projected light P31 can be reflected toward the third along a third normal direction D3 of the third light emitting surface 331. The direction of the structure 23 and the direction of the reference plane S are projected. Next, the reflection of the third projected light P31 by the third reflective structure 23 can form a third reflected light R31 passing through the second focal point 23b of the third reflective structure 23, and the third projected light P31 is reflected by the third reflective structure 23 , a third reflected ray R31 passing through the second focal point 23 b of the third reflective structure 23 can be formed.

Based on the above, please refer to FIG. 18 again, the light projection device U may further include a third axis T3, the third axis T3 can pass through the first focal point 23a of the third reflective structure 23 and the optical axis A of the lens. At the same time, a light-receiving conical surface 11 of the lens unit 1 further includes a third extension section 113, the third extension section 113 can correspond to the first focal point 23a of the third reflective structure 23, and the third axis T3 can be substantially perpendicular to the first Three extensions 113. Further, as shown in FIG. 17 and FIG. 18, the first focal point 21a of the first reflective structure 21, the first focal point 22a of the second reflective structure 22, and the first focal point 23a of the third reflective structure 23 are all located in the first extension. Between the segment 111 , the second extension segment 112 and the third extension segment 113 . Preferably, according to the embodiment of the present invention, the first extension section 111 can pass through the first focal point 21a of the first reflection structure 21, the second extension section 112 can pass through the first focus point 22a of the second reflection structure 22, and the third extension section Segment 113 may pass through first focal point 23 a of third reflective structure 23 .

Bearing the above, please refer to Fig. 14 and Fig. 18 again, the reflective unit 2 further includes a reflective surface 2S located on the first reflective structure 21, the second reflective structure 22 and the third reflective structure 23, the lens optical axis A and There may be an intersection point J0 between the reflective surfaces 2S, there may be a third intersection point J3 between the third axis T3 and the lens optical axis A, and the predetermined distance L0 between the intersection point J0 and the lens focal point 1a is smaller than the third intersection point J3 A third distance L3 to the focal point 1a of the lens. Further, there may be a third predetermined axis E3 between the intersection point J0 and the first focal point 23a of the third reflective structure 23, and a distance between the third predetermined axis E3 and the third axis T3 may be between 7 degrees and 31 degrees. The third predetermined angle θ3 between degrees, preferably, the third predetermined angle θ3 may be between 10.5 degrees and 27.5 degrees, more preferably, the third predetermined angle θ3 may be between 13.5 degrees and 24.5 degrees. Furthermore, there may be an intersection point M between the preset plane PS and the optical axis A of the lens, and the intersection point J0 may be located between the first intersection point J1 and the intersection point M. In addition, the intersection point J0 may be located between the second intersection point J2 and the intersection point M. As shown in FIG. Moreover, the intersection point J0 may be located between the third intersection point J3 and the intersection point M. As shown in FIG.

In view of the above, please refer to FIG. 17 and FIG. 18 again. A first tangent line G1 can pass through the intersecting point J0 and be tangent to the first reflective structure 21, and there can be a distance between the first tangent line G1 and the optical axis A of the lens. For the first cutting angle α1 between 47 degrees and 64.5 degrees, a second tangent G2 can pass through the intersection point J0 and be tangent to the second reflective structure 22, and there is an interval between the second tangent G2 and the optical axis A of the lens. At the second cut angle α2 between 47 degrees and 64.5 degrees, a third tangent G3 can pass through the intersection point J0 and be tangent to the third reflective structure 23, and the third tangent G3 and the optical axis A of the lens have a distance between A third cut angle α3 between 47° and 64.5°. Further, preferably, the first cut angle α1, the second cut angle α2 and the third cut angle α3 may be between 50 degrees and 61.5 degrees, more preferably, the first cut angle α1, the second cut angle α2 And the third cutting angle α3 may be between 53 degrees and 58.5 degrees.

fifth embodiment

First, please refer to FIG. 19 and FIG. 20 . FIG. 19 and FIG. 20 are three-dimensional schematic diagrams of a light projection device U according to a fourth embodiment of the present invention. From the comparison of Fig. 19 and Fig. 20 with Fig. 1 and Fig. 2, it can be seen that the biggest difference between the fifth embodiment and the first embodiment is that the light projection device U provided by the fifth embodiment further includes a third reflective structure 23 and a fourth reflective structure 24 , and the light emitting unit 3 further includes a third light emitting structure 33 and a fourth light emitting structure 34 . Furthermore, as can be seen from the comparison of Fig. 19 and Fig. 20 with Fig. 14 and Fig. 15, the biggest difference between the fifth embodiment and the fourth embodiment is that the light projection device U provided by the fifth embodiment further includes a fourth The reflective structure 24 and a fourth light emitting structure 34 . In other words, the first reflective structure 21, the second reflective structure 22, the third reflective structure 23, and the fourth reflective structure 24 in the light projection device U provided in the fifth embodiment can generally take the optical axis A of the lens as a geometry The center is equiangularly distributed. Meanwhile, the first light-emitting structure 31 , the second light-emitting structure 32 , the third light-emitting structure 33 and the fourth light-emitting structure 34 can generally be arranged at equiangular angles with the optical axis A of the lens as the geometric center. In addition, the first reflective structure 21, the second reflective structure 22, the third reflective structure 23 and the fourth reflective structure 24 are connected to each other, and the optical axis A of the lens passes through the first reflective structure 21, the second reflective structure 22, the third reflective structure The junction of the structure 23 and the fourth reflective structure 24 .

In addition, please refer to Fig. 19 and Fig. 20 again. It should be noted that the biggest difference between the fifth embodiment and the fourth embodiment is only that the fourth reflective structure 24 and the fourth light emitting structure are further added in the fifth embodiment. structure 34, and the features of the first reflective structure 21, the second reflective structure 22, the third reflective structure 23, the first light emitting structure 31, the second light emitting structure 32 and the third light emitting structure 33 are similar to those of the aforementioned fourth embodiment, I won't repeat them here.

Based on the above, please refer back to FIG. 19 and FIG. 20 , and only the parts different from the first embodiment and the fourth embodiment will be described below. The fourth reflective structure 24 has a first focal point (not shown) located adjacent to the second outer surface S2 and outside the second outer surface S2 and a second focal point corresponding to the first focal point of the fourth reflective structure 24 ( Not shown in the figure), the fourth light emitting structure 34 may correspond to the first focal point of the fourth reflective structure 24, and the fourth light emitting structure 34 is disposed adjacent to the second outer surface S2 and outside the second outer surface S2. Thereby, a fourth projection light (not shown in the figure) generated by the fourth light emitting structure can be projected towards the direction of the fourth reflective structure 24 and the direction of the reference plane S. Referring to FIG. Preferably, the fourth light emitting structure 34 can be disposed on the first focal point of the fourth reflective structure 24 . In addition, the second focal point of the fourth reflective structure 24 may be located on the optical axis A of the lens or adjacent to the optical axis A of the lens. Preferably, the second focal point 21b of the first reflective structure 21, the second focal point 22b of the second reflective structure 22, the second focal point 23b of the third reflective structure 23, the second focal point of the fourth reflective structure 24, and the lens focal point 1a can be coincide with each other.

In addition, it is worth noting that the frontal cross-sections (not shown) in Fig. 19 and Fig. 20 may also have the same characteristics as the previous embodiments. Therefore, the light projection device U provided in the fifth embodiment may further include a fourth axis (not shown in the figure) passing through the first focal point of the fourth reflective structure 24 and the optical axis A of the lens, and the lens unit 1 The light-receiving conical surface 11 may further include a fourth extension section corresponding to the first focus of the fourth reflection structure 24 (not shown in the figure), and the fourth axis is substantially perpendicular to the fourth extension section. Furthermore, the first focal point 21a of the first reflective structure 21, the first focal point 22a of the second reflective structure 22, the first focal point 23a of the third reflective structure 23, and the first focal point of the fourth reflective structure 24 are all located in the first extension. Between the segment 111, the second extension segment 112, the third extension segment 113 and the fourth extension segment, or the first extension segment 111 can pass through the first focal point 21a of the first reflective structure 21, and the second extension segment 112 can pass through the first The first focus 22 a of the second reflective structure 22 , the third extension 113 can pass through the first focus 23 a of the third reflective structure 23 , and the fourth extension can pass through the first focus of the fourth reflective structure 24 . Further, there may be a fourth intersection point (not shown in the figure) between the fourth axis and the optical axis A of the lens, and the predetermined distance L0 between the intersection point J0 and the focal point 1a of the lens is smaller than the distance between the fourth intersection point J0 and the focal point 1a of the lens. A fourth distance between them (not shown in the figure). In addition, there is a fourth predetermined axis (not shown in the figure) between the intersection point J0 and the first focal point of the fourth reflective structure 24, and there may also be a distance between the fourth predetermined axis and the fourth axis between 7 degrees and 31 degrees. A fourth predetermined angle (not shown) between degrees, preferably, the fourth predetermined angle can be between 10.5 degrees and 27.5 degrees, more preferably, the fourth predetermined angle can be between 13.5 degrees and 24.5 degrees between.

Beneficial effects of the embodiment

The beneficial effect of the present invention is that the light projection device U provided by the embodiment of the present invention can utilize "a first projected light P11 generated by the first light emitting structure 31 can be directed toward the direction of the first reflective structure 21 and the direction of the reference plane S." Projection, a second projected light P21 generated by the second light emitting structure 32 can be projected toward the direction of the second reflective structure 22 and the direction of the reference plane S" technical solution, so as to achieve the goal of "improving light collection (light concentration) efficiency" Effect.

The content disclosed above is only a preferred feasible embodiment of the present invention, and does not therefore limit the protection scope of the claims of the present invention. Therefore, all equivalent technical changes made by using the description of the present invention and the contents of the accompanying drawings are included in this document. within the protection scope of the claims of the invention.

Claims (36)

1. a kind of light projection device, which is characterized in that the light projection device includes：

One lens unit, the lens unit have a lens focus and one by the lens axis of the lens focus, institute Lens axis is stated by a datum plane and is parallel to the datum plane, the datum plane have one first lateral surface and One the second lateral surface relative to first lateral surface；

One reflector element, the reflector element include one first catoptric arrangement and one second catoptric arrangement, first reflection Structure has one to be located at the first focus adjacent to first lateral surface and other than first lateral surface and corresponds to institute State one second focus of first focus of the first catoptric arrangement, second catoptric arrangement has one to be located at neighbouring described the Two lateral surfaces and the first focus other than second lateral surface and one correspond to described the of second catoptric arrangement Second focus of one focus；And

One luminescence unit, the luminescence unit include one first light emitting structure and one second light emitting structure, and described first shines Structure corresponds to first focus of first catoptric arrangement, and first light emitting structure is positioned adjacent to outside described first The side and position other than first lateral surface, second light emitting structure correspond to the described of second catoptric arrangement First focus, and second light emitting structure is positioned adjacent to second lateral surface and other than second lateral surface Position, wherein one first throw light caused by first light emitting structure can be towards the direction of first catoptric arrangement And the direction projection of the datum plane, one second throw light caused by second light emitting structure can be towards described the The direction of two catoptric arrangements and the projection of the direction of the datum plane.

2. light projection device according to claim 1, which is characterized in that described the first of first catoptric arrangement is burnt Wire definition between point and first focus of second catoptric arrangement is a default axis, the default axis and institute Stating has a predetermined angle between 80 degree to 100 degree between lens axis.

3. light projection device according to claim 1, which is characterized in that first light emitting structure has one first hair Smooth surface, and first throw light can be tied along one first normal direction of first light-emitting surface towards first reflection The direction of structure and the projection of the direction of the datum plane, second light emitting structure have one second light-emitting surface, and described the One second throw light caused by two light emitting structures can be along one second normal direction of second light-emitting surface described in The direction of second catoptric arrangement and the projection of the direction of the datum plane, wherein first throw light passes through described the The reflection of one catoptric arrangement, to form first reflection light by second focus of first catoptric arrangement, institute Reflection of second throw light by second catoptric arrangement is stated, to form one described the by second catoptric arrangement Second reflection light of two focuses.

4. light projection device according to claim 1, which is characterized in that a first axle can be reflected by described first First focus of structure and the lens axis, and a second axis can pass through described the first of second catoptric arrangement Focus and the lens axis, wherein the lens unit has one to receive light cone face, and the receipts light cone face has one first to extend Section and one second extended segment, first extended segment correspond to first focus of first catoptric arrangement, and described second Extended segment corresponds to first focus of second catoptric arrangement, wherein the first axle is generally perpendicular to described first Extended segment, the second axis is generally perpendicular to second extended segment.

5. light projection device according to claim 4, which is characterized in that described the first of first catoptric arrangement is burnt First focus of point and second catoptric arrangement be all located at first extended segment and second extended segment it Between, alternatively, first extended segment is passed through by first focus and second extended segment of first catoptric arrangement First focus of second catoptric arrangement.

6. light projection device according to claim 4, which is characterized in that the reflector element still further comprises one Reflecting surface on first catoptric arrangement and second catoptric arrangement, the lens axis and the reflecting surface it Between have a cross-point, wherein

There is one first intersection point between the first axle and the lens axis, the second axis and the lens axis it Between there is one second intersection point, the cross-point to the preset distance between the lens focus to be less than first intersection point to institute One first distance between lens focus is stated, the cross-point to the preset distance between the lens focus is less than described Second intersection point is to the second distance between the lens focus.

7. light projection device according to claim 6, which is characterized in that the cross-point and first catoptric arrangement First focus between have one first predetermined axial line, described the first of the cross-point and second catoptric arrangement burnt There is one second predetermined axial line, wherein with one between 7 degree between first predetermined axial line and the first axle between point The first predetermined angular between to 31 degree, with one between 7 degree to 31 between second predetermined axial line and the second axis The second predetermined angular between degree.

8. light projection device according to claim 4, which is characterized in that described the first of first catoptric arrangement is burnt Wire definition between point and first focus of second catoptric arrangement is a default axis, the default axis and institute Stating has a crosspoint between lens axis, wherein the reflector element still further comprises one and is located at the first reflection knot Structure and the reflecting surface on second catoptric arrangement, have a cross-point between the lens axis and the reflecting surface, Wherein, there is one first intersection point, the cross-point to be located at first intersection point between the first axle and the lens axis Between the crosspoint.

9. light projection device according to claim 8, which is characterized in that the second axis and the lens axis it Between have one second intersection point, the cross-point is between second intersection point and the crosspoint.

10. light projection device according to claim 1, which is characterized in that described the second of first catoptric arrangement Focus is located on the lens axis or is adjacent to the lens axis, second focus position of second catoptric arrangement In on the lens axis or being adjacent to the lens axis.

11. light projection device according to claim 1, which is characterized in that described the second of first catoptric arrangement Focus, second focus of second catoptric arrangement and the lens focus three overlap.

12. light projection device according to claim 1, which is characterized in that first catoptric arrangement and described Two catoptric arrangements are interconnected with one another, and the lens axis passes through first catoptric arrangement and second catoptric arrangement Junction.

13. light projection device according to claim 1, which is characterized in that first light emitting structure is adjacent to described First focus of first catoptric arrangement is set up directly in first focus of first catoptric arrangement, and described Two light emitting structures are adjacent to first focus of second catoptric arrangement or are set up directly on the second reflection knot In first focus of structure.

14. light projection device according to claim 1, which is characterized in that the reflector element still further comprises one First cambered surface catoptric arrangement and one second cambered surface catoptric arrangement, the first cambered surface catoptric arrangement are positioned adjacent to described first The lateral surface and position other than first lateral surface, the second cambered surface catoptric arrangement are positioned adjacent to outside described second Side and the position other than second lateral surface.

15. light projection device according to claim 14, which is characterized in that the first cambered surface catoptric arrangement and institute Stating the second cambered surface catoptric arrangement, there is parabolic curvature, the first cambered surface catoptric arrangement to have a focus, second cambered surface anti- Penetrating structure has a focus, and first light emitting structure corresponds to the focus of the second cambered surface catoptric arrangement, and described the Two light emitting structures correspond to the focus of the first cambered surface catoptric arrangement.

16. light projection device according to claim 14, which is characterized in that one caused by first light emitting structure First injection light can be projected towards the direction of the second cambered surface catoptric arrangement, one the caused by second light emitting structure Two injection light can be projected towards the direction of the first cambered surface catoptric arrangement, wherein described first projects light described in The reflection of second cambered surface catoptric arrangement and form one first irradiation light, it is described second project light it is anti-by first cambered surface It penetrates the reflection of structure and forms one second irradiation light.

17. light projection device according to claim 1, which is characterized in that the lens unit has one to receive light cone face, The reflector element still further comprises an extension catoptric arrangement, first catoptric arrangement and second catoptric arrangement position In the range in the receipts light cone face.

18. light projection device according to claim 17, which is characterized in that the curvature of curved surface for extending catoptric arrangement It is identical as the curvature of curved surface of first catoptric arrangement or the curvature of curved surface of the second catoptric arrangement.

19. light projection device according to claim 17, which is characterized in that the reflector element still further comprises one Reflecting surface on first catoptric arrangement and second catoptric arrangement, the lens axis and the reflecting surface Between have a cross-point, wherein

One first tangent line can be by the cross-point and tangent with first catoptric arrangement, and first tangent line with it is described There is the first corner cut between 47 degree to 64.5 degree between mirror optical axis, one second tangent line can by the cross-point and with institute It is tangent to state the second catoptric arrangement,

And with the second corner cut between 47 degree to 64.5 degree between second tangent line and the lens axis.

20. light projection device according to claim 1, which is characterized in that first catoptric arrangement is neighbouring with one In the vertex of first focus of first catoptric arrangement, the vertex of first catoptric arrangement is to described first anti- Penetrating has one first short distance between first focus of structure, and first focus of first catoptric arrangement is to described Have between second focus of first catoptric arrangement one first over long distances, wherein first long range is more than described the One short distance, first long range and first short-range ratio are between 1.8 to 3.8.

21. light projection device according to claim 20, which is characterized in that second catoptric arrangement is neighbouring with one In the vertex of first focus of second catoptric arrangement, the vertex of second catoptric arrangement is to described second anti- Penetrating has one second short distance between first focus of structure, and first focus of second catoptric arrangement is to described Have between second focus of second catoptric arrangement one second over long distances, wherein second long range is more than described the Two short distances, second long range and second short-range ratio are between 1.8 to 3.8.

22. light projection device according to claim 1, which is characterized in that first catoptric arrangement has one first Endpoint, second endpoint relative to the first end point of first catoptric arrangement and a vertex, wherein described first The first end point of catoptric arrangement between second endpoint of first catoptric arrangement have a first end point distance, The vertex of first catoptric arrangement between the lens axis have one first vertical range, the first end point away from From more than first vertical range, the ratio of the first end point distance and first vertical range between 0.7 to 1.8 it Between.

23. light projection device according to claim 22, which is characterized in that second catoptric arrangement has one first Endpoint, second endpoint relative to the first end point of second catoptric arrangement and a vertex, wherein described second The first end point of catoptric arrangement between second endpoint of second catoptric arrangement have one second end-point distances, The vertex of second catoptric arrangement between the lens axis have one second vertical range, second endpoint away from From more than second vertical range, the ratio of second end-point distances and second vertical range between 0.7 to 1.8 it Between.

24. light projection device according to claim 1, which is characterized in that the reflector element still further comprises one Third catoptric arrangement, the luminescence unit still further comprise a third light emitting structure, and the third catoptric arrangement has one In neighbouring first lateral surface and the first focus other than first lateral surface and the corresponding third reflection knot One second focus of first focus of structure, the third light emitting structure correspond to first coke of the third catoptric arrangement Point, and the third light emitting structure is positioned adjacent to first lateral surface and the position other than first lateral surface, Wherein, a third throw light caused by the third light emitting structure can be towards the direction of the third catoptric arrangement and institute State the direction projection of datum plane.

25. light projection device according to claim 24, which is characterized in that described the first of first catoptric arrangement The plane that first focus of focus, first focus of second catoptric arrangement and the third catoptric arrangement is constituted It is defined as a preset plane, it is pre- between 80 degree to 100 degree with one between the preset plane and the datum plane If angle.

26. light projection device according to claim 24, which is characterized in that the third light emitting structure has a third Light-emitting surface, and the third throw light can be reflected along a third normal direction of the third light-emitting surface towards the third The direction of structure and the projection of the direction of the datum plane, wherein the third throw light is reflected by the third to be tied The reflection of structure and form a third reflection light by second focus of the third catoptric arrangement, third projection Light forms one by second focus of the third catoptric arrangement by the reflection of the third catoptric arrangement Three reflection lights.

27. light projection device according to claim 24, which is characterized in that a first axle can be anti-by described first First focus and the lens axis, a second axis for penetrating structure can pass through described the first of second catoptric arrangement Focus and the lens axis, and first focus that a third axis can be by the third catoptric arrangement and the lens Optical axis, wherein the lens unit has one to receive light cone face, and there is one first extended segment, one second to extend in the receipts light cone face Section and a third extended segment, first extended segment correspond to first focus of first catoptric arrangement, and described second Extended segment corresponds to first focus of second catoptric arrangement, and the third extended segment corresponds to the third catoptric arrangement First focus, wherein the first axle generally perpendicular to first extended segment, the second axis generally perpendicular to Second extended segment, and the third axis is generally perpendicular to the third extended segment.

28. light projection device according to claim 27, which is characterized in that described the first of first catoptric arrangement First focus of focus, first focus of second catoptric arrangement and the third catoptric arrangement is all located at described Between one extended segment, second extended segment and the third extended segment, alternatively, first extended segment passes through described first First focus of catoptric arrangement, second extended segment pass through first focus of second catoptric arrangement and described First focus that third extended segment passes through the third catoptric arrangement.

29. light projection device according to claim 27, which is characterized in that the reflector element still further comprises one Reflecting surface on first catoptric arrangement, second catoptric arrangement and the third catoptric arrangement, it is described There is a cross-point, wherein have between the first axle and the lens axis between mirror optical axis and the reflecting surface One first intersection point, between the second axis and the lens axis have one second intersection point, the third axis with it is described There is a third intersection point, the cross-point to the preset distance between the lens focus to be less than described first between mirror optical axis Intersection point is to one first distance between the lens focus, the cross-point to the preset distance between the lens focus Less than second intersection point to the second distance between the lens focus, the cross-point is between the lens focus The preset distance is less than the third intersection point to the third distance between the lens focus.

30. light projection device according to claim 29, which is characterized in that the cross-point is tied with first reflection There is one first predetermined axial line, the cross-point and described the first of second catoptric arrangement between first focus of structure There is one second predetermined axial line between focus, have between the cross-point and first focus of the third catoptric arrangement One third predetermined axial line, wherein between first predetermined axial line and the first axle with one between 7 degree to 31 degree The first predetermined angular, between second predetermined axial line and the second axis with one between 7 degree to 31 degree the Two predetermined angulars have a third between 7 degree to 31 degree pre- between the third predetermined axial line and the third axis Determine angle.

31. light projection device according to claim 27, which is characterized in that described the first of first catoptric arrangement What first focus of focus, first focus of second catoptric arrangement and the third catoptric arrangement was constituted Plane definition is a preset plane, has a crosspoint between the preset plane and the lens axis, wherein the reflection Unit still further comprises one and is located at first catoptric arrangement and the reflecting surface on second catoptric arrangement, the lens There is a cross-point, wherein have one between the first axle and the lens axis between optical axis and the reflecting surface First intersection point, the cross-point is between first intersection point and the crosspoint.

32. light projection device according to claim 24, which is characterized in that described the second of first catoptric arrangement Focus is located on the lens axis or is adjacent to the lens axis, second focus position of second catoptric arrangement In on the lens axis or being adjacent to the lens axis, second focus of the third catoptric arrangement is located at described Either it is adjacent to the lens axis on lens axis.

33. light projection device according to claim 24, which is characterized in that described the second of first catoptric arrangement Focus, second focus of second catoptric arrangement, second focus of the third catoptric arrangement and described Mirror foci overlaps.

34. light projection device according to claim 24, which is characterized in that first catoptric arrangement, described second Catoptric arrangement and the third catoptric arrangement are interconnected with one another, and the lens axis by first catoptric arrangement, The junction of second catoptric arrangement and the third catoptric arrangement.

35. light projection device according to claim 24, which is characterized in that the reflector element still further comprises one Reflecting surface on first catoptric arrangement, second catoptric arrangement and the third catoptric arrangement, it is described Between mirror optical axis and the reflecting surface have a cross-point, wherein one first tangent line can by the cross-point and with it is described First catoptric arrangement is tangent, and have between first tangent line and the lens axis between 47 degree to 64.5 degree the One corner cut, one second tangent line can be by the cross-point and tangent with second catoptric arrangement, and second tangent line and institute State the second corner cut having between lens axis between 47 degree to 64.5 degree, a third tangent line can by the cross-point and It is tangent with the third catoptric arrangement, and between the third tangent line and the lens axis have between 47 degree to 64.5 degree it Between third corner cut.

36. light projection device according to claim 24, which is characterized in that the reflector element still further comprises one 4th catoptric arrangement, the luminescence unit still further comprise one the 4th light emitting structure, and the 4th catoptric arrangement has one In neighbouring second lateral surface and the first focus other than second lateral surface and the corresponding 4th reflection knot One second focus of first focus of structure, the 4th light emitting structure correspond to first coke of the 4th catoptric arrangement Point, and the 4th light emitting structure is positioned adjacent to second lateral surface and the position other than second lateral surface, Wherein, one the 4th throw light caused by the 4th light emitting structure can be towards the direction of the 4th catoptric arrangement and institute State the direction projection of datum plane.