CN210534453U - Optical system and demarcation device - Google Patents
Optical system and demarcation device Download PDFInfo
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- CN210534453U CN210534453U CN201921405793.XU CN201921405793U CN210534453U CN 210534453 U CN210534453 U CN 210534453U CN 201921405793 U CN201921405793 U CN 201921405793U CN 210534453 U CN210534453 U CN 210534453U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 40
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Abstract
The utility model provides an optical system and a demarcation device, wherein the optical system comprises a light source, a collimating lens and a four-prism; the four sides of the four prisms are respectively a first light splitting surface, a second light splitting surface, a first light emitting surface and a second light emitting surface; the first light splitting surface and the second light splitting surface are arranged to allow part of light emitted to the first light splitting surface and the second light splitting surface to pass through and the other part to reflect; the light emitted by the light source is collimated by the collimating lens and then emitted to the first light splitting surface and the second light splitting surface, one part of the light emitted to the first light splitting surface is reflected and then emitted to the first direction, and the other part of the light passes through the first light splitting surface and is emitted to the second direction through the first light emitting surface; and one part of the light emitted to the second light splitting surface is emitted to the third direction after being reflected, and the other part of the light passes through the second light splitting surface and is emitted to the second direction through the second light emitting surface. After the technical scheme is adopted, three light beams are separated from a single light source, and the three-beam light source is simple in structure, low in cost and easy to realize.
Description
Technical Field
The utility model relates to an optical system technical field especially relates to an optical system and demarcation device.
Background
The existing products such as laser striping machines need to project lasers in different directions so as to provide three-dimensional collimation reference lines. An optical system for producing a plurality of light beams using a single emission source is indispensable.
Some common optical systems are realized by arranging reflectors at a plurality of positions to enable the optical path to be deflected for a plurality of times by 90 degrees, and some optical systems are realized by manufacturing prisms with complex structures, so that the conventional optical systems are generally high in assembly difficulty or high in processing difficulty and production cost.
Therefore, it is necessary to develop an optical system and a line projector having the same, which have simple structure, convenient assembly, and low cost and can split a single light source.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model aims to provide a simple structure, convenient assembling, cost are lower and can realize carrying out the optical system of beam split and have this optical system's demarcation appearance to single light source.
The utility model discloses an optical system, which comprises a light source and a collimating lens,
the optical system further comprises a four-prism;
the four side surfaces of the four-prism are respectively a first light splitting surface, a second light splitting surface, a first light emitting surface and a second light emitting surface;
the first light splitting surface and the second light splitting surface are arranged to allow part of light emitted to the first light splitting surface and the second light splitting surface to pass through and the other part to reflect;
the light emitted by the light source is collimated by the collimating lens and then emitted to the first light splitting surface and the second light splitting surface, one part of the light emitted to the first light splitting surface is emitted to the first direction after being reflected, and the other part of the light passes through the first light splitting surface and is emitted to the second direction through the first light emitting surface; and one part of the light emitted to the second light splitting surface is emitted to the third direction after being reflected, and the other part of the light passes through the second light splitting surface and is emitted to the second direction through the second light emitting surface.
Preferably, the first light-splitting surface is perpendicular to the second light-splitting surface;
the included angles between the first light splitting surface and the second light splitting surface and the incidence direction of the collimated light rays are both 45 degrees;
the first light-emitting surface is parallel to the first light splitting surface, and the second light-emitting surface is parallel to the second light splitting surface;
the first direction is perpendicular to the second direction, and the first direction is opposite to the third direction.
Preferably, the surfaces of the first light splitting surface and the second light splitting surface are both provided with a light splitting film.
Preferably, the light splitting film is a dielectric film.
Preferably, a diaphragm is arranged between the collimating lens and the four-prism;
the light passing through the diaphragm is divided into two beams, wherein one beam is emitted to the first light splitting surface, and the other beam is emitted to the second light splitting surface.
Preferably, one or more of the first direction, the second direction and the third direction is provided with a diaphragm.
Preferably, the first light-dividing surface and the second light-dividing surface are glued.
Preferably, a light shielding layer is disposed on the first light emitting surface or the second light emitting surface, and is used for preventing light from exiting outwards through the first light emitting surface or the second light emitting surface.
The utility model also discloses a demarcation appearance, the demarcation appearance includes foretell optical system.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. simple structure, convenient assembling, lower cost and easy realization.
2. Can divide a single light source into three beams of light in different directions, and has good light division effect.
Drawings
Fig. 1 is a schematic diagram of an optical path of an optical system according to an embodiment of the present invention;
fig. 2 is a three-dimensional schematic diagram of an optical system according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an optical path of an optical system according to another embodiment of the present invention;
reference numerals:
100-a light source, 200-a collimating lens, 300-a four-prism, 310-a first light splitting surface, 320-a second light splitting surface, 330-a first light emitting surface, 340-a second light emitting surface, 400-a first diaphragm, 500-a second diaphragm, 600-a central axis of an optical system, a-a first direction, b-a second direction and c-a third direction.
Detailed Description
The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1 and 2, the present invention discloses an optical system, including:
The light source 100 is used to emit light. The light source 100 may be a laser source 100, i.e., the light source 100 includes a laser tube and a laser tube driving PCB. The laser tube may be a laser diode.
The collimating lens 200 is used for collimating the light emitted from the light source 100, that is, focusing the light emitted from the light source 100 and making the light exit as parallel or approximately parallel light to the four-prism 300.
-a four-sided prism 300
The four sides of the four-sided prism 300 are respectively a first light splitting surface 310, a second light splitting surface 320, a first light emitting surface 330, and a second light emitting surface 340. The quadrangular prism 300 includes a bottom surface, a side surface, and a top surface, two opposite surfaces being the bottom surface and the top surface, and the remaining four sequentially successive surfaces being the side surfaces. Of the four side surfaces of the four-prism 300, two side surfaces facing the collimating lens 200 are a first light splitting surface 310 and a second light splitting surface 320, that is, two side surfaces of the collimated light emitted onto the four-prism 300 are the first light splitting surface 310 and the second light splitting surface 320, and two side surfaces of the four-prism 300 far away from the collimating lens 200 are a first light emitting surface 330 and a second light emitting surface 340.
The first light splitting surface 310 and the second light splitting surface 320 are arranged such that a part of light emitted toward the first light splitting surface 310 and the second light splitting surface 320 is transmitted and another part is reflected. Specifically, in this embodiment, the surfaces of the first light splitting surface 310 and the second light splitting surface 320 are both provided with a light splitting film, that is, two side surfaces of the quadrangular prism 300 are formed with the first light splitting surface 310 and the second light splitting surface 320 by plating the light splitting films. The light splitting film has specific reflectivity and transmittance in a certain wavelength range, namely, one part of light can be transmitted, and the other part of light can be reflected. The light splitting film is a dielectric film or a metal film.
The light emitted from the light source 100 is collimated by the collimating lens 200 and then emitted to the first light splitting surface 310 and the second light splitting surface 320. Preferably, the light source 100, the collimating lens 200, and the four-prism 300 are disposed on the same axis, i.e., the central axis 600 of the optical system in fig. 2. A part of the light emitted to the first light splitting surface 310 is reflected and emitted to the first direction a, and the other part of the light passes through the first light splitting surface 310 and is refracted and emitted to the second direction b through the first light emitting surface 330; a part of the light emitted toward the second light splitting surface 320 is reflected and then emitted toward the third direction c, and another part of the light passes through the second light splitting surface 320 and is emitted toward the second direction b through the second light emitting surface 340, so that the light emitted by the light source 100 is divided into three beams and emitted toward different directions.
Further, the first light splitting surface 310 is perpendicular to the second light splitting surface 320, and the included angle between the first light splitting surface 310 and the collimated light beam and the incident direction of the collimated light beam is 45 ° (i.e. 135 °), so that a part of the light beam emitted to the first light splitting surface 310 is reflected and then emitted in a first direction a perpendicular to the incident direction of the light beam, a part of the light beam emitted to the second light splitting surface 320 is reflected and then emitted in a third direction c perpendicular to the incident direction of the light beam, and the first direction a is opposite to the third direction c. The first light emitting surface 330 is parallel to the first light splitting surface 310, another part of the light emitted to the first light splitting surface 310 passes through the first light splitting surface 310 to be refracted and then emitted to the first light emitting surface 330, and is refracted again at the first light emitting surface 330 and then emitted outward in a second direction b, because the first light emitting surface 330 is parallel to the first light splitting surface 310, the second direction b is the same as the incident direction of the collimated light, and the second direction b is perpendicular to the first direction a and the third direction c. Similarly, the second light-emitting surface 340 is parallel to the second light-splitting surface 320, another part of the light emitted toward the second light-splitting surface 320 passes through the second light-splitting surface 320 to be refracted and then emitted toward the second light-emitting surface 340, and is refracted again at the second light-emitting surface 340 and emitted outward in a second direction b, the second direction b is the same as the incident direction of the collimated light, and the second direction b is perpendicular to the first direction a and the third direction c. Through the scheme, the light rays are emitted in three opposite and vertical directions, so that the optical system can be effectively applied to the line projector and meets the requirement of the line projector on the light ray direction. Referring to fig. 1, in the present embodiment, after the collimated light is refracted into the quadrangular prism 300 through the first light splitting surface 310 and the second light splitting surface 320, the intersection point of the upper edge and the lower edge of the collimated light in the quadrangular prism 300 is at the boundary of the first light emitting surface 330 and the second light emitting surface 340, so that the light emitted outward through the first light emitting surface 330 and the second light emitting surface 340 is emitted as a beam of light. Referring to fig. 3, in another embodiment of the present invention, after the collimated light is refracted into the quadrangular prism 300 through the first light splitting surface 310 and the second light splitting surface 320, the junction point of the upper and lower edges in the quadrangular prism 300 is inside the quadrangular prism 300 and before the junction of the first light emitting surface 330 and the second light emitting surface 340, so that the light entering the quadrangular prism 300 from the first light splitting surface 310 exits from the first light emitting surface 330 in the second direction b, and the light entering the quadrangular prism 300 from the second light splitting surface 320 exits from the second light emitting surface 340 in the second direction b, there is a gap between the light exiting from the first light emitting surface 330 and the light exiting from the second light emitting surface 340, i.e., the light exiting in the second direction b after passing through the quadrangular prism 300 is divided into two beams, i.e., the light emitted from the single light source 100 can be divided into four beams by the optical system of the present application, the application scene of the optical system is further improved, and the requirements of various optical instruments on more complex light splitting and light using can be met.
Further, referring to fig. 2, in the embodiment of fig. 2, a first light barrier 400 is disposed between the collimating lens 200 and the four-prism 300, and light passing through the first light barrier 400 is divided into two beams, wherein one beam is emitted to the reflective surface, and the other beam is emitted to the light incident surface. The first diaphragm 400 is a light shielding part provided with an opening, the opening is a circular through hole, and light rays can be more round after passing through the first diaphragm 400, so that the quality of light spots formed by light ray projection is improved. The first diaphragm 400 has two openings, one of which corresponds to the first light splitting surface 310 and the other of which corresponds to the second light splitting surface 320. In some embodiments, a light barrier may also be disposed in the light exit direction after the light passes through the four-prism 300, that is, the light barrier may be disposed in one or more of the first direction a, the second direction b, and the third direction c, so as to make the split light more round and smooth, and improve the quality of the light spot formed by light projection. In the embodiment of fig. 2, a second diaphragm 500 is disposed in the second direction b, and a circular through hole is disposed on the second diaphragm 500, so as to make the light emitted in the second direction b more round.
Further, a light shielding layer is disposed on the first light emitting surface 330 or the second light emitting surface 340, and is used for preventing light from being emitted outwards through the first light emitting surface 330 or the second light emitting surface 340. The light shielding layer may be formed by plating an opaque material on the surface of the prism. By not arranging the light shielding layer on one light-emitting surface and arranging the light shielding layer on the other light-emitting surface, light can be emitted out through one light-emitting surface after passing through the quadrangular prism 300 and is not influenced by light emitted from the other light-emitting surface, so that the light-emitting quality is ensured.
The utility model discloses an optical system just can realize the beam split of three direction through several simple parts, can fall into three bundles or four bundles in a flexible way, need not use a plurality of reflectors of different positions, also need not use the prism that the structure is complicated, only needs the tetraprism of having handled through collimating lens and part side just can realize, simple structure, convenient assembling, and the cost is lower, and the beam split is effectual.
The utility model also discloses a demarcation appearance, the demarcation appearance includes foretell optical system. The line projector may be a laser line projector.
It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (8)
1. An optical system comprising a light source, a collimating lens,
the optical system further comprises a four-prism;
the four side surfaces of the four-prism are respectively a first light splitting surface, a second light splitting surface, a first light emitting surface and a second light emitting surface;
the first light splitting surface and the second light splitting surface are arranged to allow part of light emitted to the first light splitting surface and the second light splitting surface to pass through and the other part to reflect;
the light emitted by the light source is collimated by the collimating lens and then emitted to the first light splitting surface and the second light splitting surface, one part of the light emitted to the first light splitting surface is emitted to the first direction after being reflected, and the other part of the light passes through the first light splitting surface and is emitted to the second direction through the first light emitting surface; and one part of the light emitted to the second light splitting surface is emitted to the third direction after being reflected, and the other part of the light passes through the second light splitting surface and is emitted to the second direction through the second light emitting surface.
2. The optical system of claim 1,
the first light splitting surface is perpendicular to the second light splitting surface;
the included angles between the first light splitting surface and the second light splitting surface and the incidence direction of the collimated light rays are both 45 degrees;
the first light-emitting surface is parallel to the first light splitting surface, and the second light-emitting surface is parallel to the second light splitting surface;
the first direction is perpendicular to the second direction, and the first direction is opposite to the third direction.
3. The optical system of claim 1,
the surfaces of the first light splitting surface and the second light splitting surface are provided with light splitting films.
4. The optical system of claim 3,
the light splitting film is a dielectric film or a metal film.
5. The optical system of claim 1,
a diaphragm is arranged between the collimating lens and the four prisms;
the light passing through the diaphragm is divided into two beams, wherein one beam is emitted to the first light splitting surface, and the other beam is emitted to the second light splitting surface.
6. The optical system of claim 1,
and one or more of the first direction, the second direction and the third direction is/are provided with a diaphragm.
7. The optical system of claim 1,
and a shading layer is arranged on the first light-emitting surface or the second light-emitting surface and used for preventing light rays from being emitted outwards through the first light-emitting surface or the second light-emitting surface.
8. A line projector is characterized in that,
comprising an optical system according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405793.XU CN210534453U (en) | 2019-08-28 | 2019-08-28 | Optical system and demarcation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405793.XU CN210534453U (en) | 2019-08-28 | 2019-08-28 | Optical system and demarcation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210534453U true CN210534453U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921405793.XU Active CN210534453U (en) | 2019-08-28 | 2019-08-28 | Optical system and demarcation device |
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| CN (1) | CN210534453U (en) |
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- 2019-08-28 CN CN201921405793.XU patent/CN210534453U/en active Active
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