CN114660880A - Reflective projection imaging device and design method thereof - Google Patents

Abstract

The application provides a reflective projection imaging device and a design method thereof, relates to the technical field of optics, and can create a surprising projection effect when a light source irradiates on the reflective projection imaging device. The reflective projection imaging device provided by the embodiment of the application comprises a substrate and a plurality of reflecting lenses arranged on the substrate, wherein at least part of the reflecting lenses in the plurality of reflecting lenses are obliquely arranged at different inclination angles in different directions relative to the substrate respectively; incident light rays emitted to the reflecting surfaces of the plurality of reflecting lenses form a plurality of reflected light rays emitted to different directions through reflection of the reflecting surfaces of the plurality of reflecting lenses, and the plurality of reflected light rays are emitted on a projection surface to form a plurality of projection light spots distributed at different positions on the projection surface; the combination of a plurality of said projected spots forms a projected pattern.

Description

Reflective projection imaging device and design method thereof

technical field

The present application relates to the field of optical technology, and in particular, to a reflective projection imaging device and a design method thereof.

Background technique

With the gradual improvement of people's pursuit of quality of life, objects that can create various atmospheres are widely used in life. For example, reflection projection devices that can reflect various specific patterns through light. These reflection projection devices usually have a smooth and flat reflection surface, and various patterns are engraved on the reflection surface. The reflection surface can reflect the light irradiated on it to the projection surface. to form an engraved pattern on the projection surface.

However, these reflection projection devices can see the pattern to be projected by directly observing the pattern engraved on the reflection surface with the naked eye, and it is difficult to create a surprising projection effect.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a reflective projection imaging device, which can create a surprising projection effect.

The reflection type projection imaging device provided by the embodiments of the present application includes a substrate and a plurality of reflection mirrors disposed on the substrate, and at least some of the reflection mirrors in the plurality of reflection mirrors face different directions with respect to the substrate, respectively. The directions are inclined at different inclination angles; a plurality of the reflecting mirrors are arranged in an array;

The incident light rays directed to the reflective surfaces of the plurality of reflective sheets are reflected by the reflective surfaces of the plurality of reflective sheets to form a plurality of reflective rays directed to different directions, and a plurality of the reflective rays strike the projection surface to form a distribution A plurality of projection light spots at different positions on the projection surface; the combination of the plurality of projection light spots forms a projection pattern.

In the reflective projection imaging device of the embodiment of the present application, the naked eye cannot know the projected pattern by observing the reflective lenses on the substrate, and can only be seen when the light source illuminates the reflective projection imaging device and reflects the light onto the projection surface. The projection pattern can create a surprising projection effect when the light source illuminates the reflective projection imaging device.

In one possible implementation manner, the present application implements the reflective projection imaging device provided, wherein a plurality of lens placement tables are provided on the substrate, and each of the lens placement platforms has a lens at one end away from the substrate A placement surface, each of the lens placement surfaces is provided with one of the reflective lenses. The lens placement table is used to place the reflective lens. The tilt direction and tilt angle of the lens placement surface are consistent with the tilt direction and tilt angle of the corresponding reflector lens. This can be achieved by changing the tilt direction and tilt angle of the lens placement surface on the lens placement table. The reflection direction of the reflective lens is adjusted.

In one of the possible implementations, in the reflective projection imaging device provided by the present application, the reflective surface of the reflective sheet is a plane or a concave surface, and the side of the reflective sheet away from the reflective surface is attached and connected to the on the lens placement surface.

In one of the possible implementations, the present application implements the reflective projection imaging device provided, wherein the shape of the reflective sheet is a regular hexagon, and a plurality of the reflective sheets are arranged in a honeycomb array. In this way, the plurality of reflective sheets can be arranged in a honeycomb array, so that the arrangement of the reflective sheets on the substrate is more neat and orderly.

In one of the possible implementations, in the reflective projection imaging device provided by this application, an upright frame is provided on the outer peripheral side of the substrate, the outer peripheral wall of the substrate is hinged with the inner peripheral wall of the upright frame, and the upright frame is hinged. The base plate is rotatable relative to the upright frame. In this way, by rotating the base plate and the upright frame to a certain angle, the lower end of the upright frame and the lower end of the base plate can respectively form support surfaces, so that the reflective projection imaging device of the present application can be stably erected on a tabletop, ground and other planes.

In one of the possible implementations, the present application implements the reflective projection imaging device provided, and the reflective lens is a glass lens or a metal lens.

In one possible implementation manner, the substrate is a plastic substrate or a metal substrate.

Embodiments of the present application further provide a method for designing a reflective projection imaging device, which is used to design the above-mentioned reflective projection imaging device, including the following steps:

Determine the position of the projection surface, the position of the light source, and the position of the substrate;

Determine the projection pattern to be formed, and determine the coordinate position of each projection light spot that generates the projection pattern according to the projection pattern to be formed;

Determine the number of reflecting mirrors according to the number of projection light spots, arrange each reflecting mirror, and determine the coordinate position of the center point on the reflecting surface of each reflecting mirror;

Calculate the normal vector of the reflecting surface of each reflecting lens according to the position of the light source, the coordinate position of the center point on the reflecting surface of each reflecting lens, and the coordinate position of each of the projection light spots;

Calculate the inclination direction and inclination angle of the reflecting mirror relative to the substrate according to the normal vector of the reflecting surface of each reflecting mirror;

Each of the reflection sheets is provided on the substrate according to the coordinate position of the center point on the reflection surface of each of the reflection sheets and the inclination direction and inclination angle of each of the reflection sheets with respect to the substrate.

In one of the possible implementations, the present application implements the design method for a reflective projection imaging device, in which the coordinate position of the center point on the reflective surface of each of the reflective mirrors and the relative position of each of the reflective mirrors The inclination direction and inclination angle of the substrate, in the step of arranging each of the reflecting mirrors on the substrate, further comprising:

According to the coordinate position of the center point on the reflective surface of each of the reflective mirrors, a mirror placement table corresponding to the position of each mirrored mirror is arranged on the substrate;

According to the inclination direction and inclination angle of each of the reflecting mirrors with respect to the substrate, a mirror placing surface parallel to the reflecting surface of the reflecting mirror is provided on the mirror placing table.

In one of the possible implementations, the present application implements a design method for a reflective projection imaging device, wherein the number of reflective mirrors is determined according to the number of the projection light spots, and the reflective mirrors are arranged In the step of determining the coordinate position of the center point on the reflective surface of each of the reflective mirrors, the arrangement of the reflective mirrors is an array arrangement.

The design method of the reflective projection imaging device provided by the implementation of the present application can calculate the tilt direction and tilt angle of each reflective mirror on the substrate relative to the substrate according to the projection pattern to be presented, so that the reflective projection can be designed and manufactured more conveniently. imaging device.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a reflective projection imaging device according to an embodiment of the present application;

2 is a schematic diagram of the positional relationship of one of the reflective mirrors in the reflective projection imaging device according to the embodiment of the present application;

3 is an imaging schematic diagram of a reflective projection imaging device according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a design principle of a design method of a reflective projection imaging device according to an embodiment of the present application.

Description of reference numbers:

10-substrate; 20-reflector;

21-reflecting surface; 30-lens placement table;

31 - lens placement surface; 40 - upright frame;

50-projection pattern; 51-projection light spot;

60 - Light source.

Detailed ways

The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to FIGS. 1 to 3 , the reflective projection imaging device provided by the embodiments of the present application includes a substrate 10 and a plurality of reflective mirrors 20 disposed on the substrate 10 , and at least part of the reflective mirrors 20 among the plurality of mirrors 20 are opposite to each other. The substrates 10 are respectively inclined in different directions with different inclination angles. Wherein, the substrate 10 is the fixing plate of the reflective lens 20, which can be made of plastic, metal or other materials. The reflecting lens 20 may be a lens having a reflecting surface 21 such as a glass lens, a metal lens, etc. The reflecting surface 21 of the reflecting lens 20 faces the outside of the projection imaging device for receiving and reflecting light.

Referring to FIG. 3 , the incident light rays directed to the reflective surfaces 21 of the plurality of reflective sheets 20 are reflected by the reflective surfaces 21 of the plurality of reflective sheets 20 to form a plurality of reflective rays radiating in different directions, and the plurality of reflected rays are projected on the projection A plurality of projection light spots 51 distributed at different positions on the projection surface are formed on the surface, and the combination of the plurality of projection light spots 51 forms a projection pattern 50 . The light source 60 of the incident light may be sunlight.

In the reflective projection imaging device provided by the embodiment of the present application, since the projection pattern 50 is formed by a combination of a plurality of projection light spots 51, the projection light spots 51 are formed by a plurality of reflected rays striking the projection surface, and the plurality of reflected rays are The output direction is determined by slanting a plurality of reflecting mirrors 20 in different directions with respect to the substrate 10 at different inclination angles. Therefore, when different projection patterns 50 need to be projected, the position of the projection spot 51 on the projection surface of the reflected light can be changed by adjusting the inclination direction and inclination angle of each reflecting lens 20, so that the projection pattern can be formed on the projection surface. Different projection patterns 50 . In this way, the projection pattern 50 presented by the reflective projection imaging device does not depend on the arrangement positions of the respective reflecting mirrors 20 on the substrate 10 , but depends on the inclination direction and the inclination angle of the reflecting mirrors 20 on the substrate 10 . The two reflective projection imaging devices with the same arrangement of the reflecting mirrors 20 on the substrate 10 can also project different projection patterns 50 , so the naked eye cannot know the projected patterns by observing the reflecting mirrors 20 on the substrate 10 . The projection pattern 50 can be seen only when the light source 60 is irradiated on the reflective projection imaging device and the light is reflected on the projection surface, so that when the light source 60 is irradiated on the reflective projection imaging device, a surprising projection effect can be created .

Moreover, in actual production, it is not necessary to set the arrangement positions of the respective reflecting mirrors 20 on the substrate 10 according to the difference of the projection patterns 50 . It can ensure the consistency of the arrangement positions of the reflective mirrors 20 on the substrate 10, and will not cause the reflective mirrors 20 to be arranged differently on the substrate 10 because different patterns are to be arranged, so that the appearance of the projection imaging device is more neat and beautiful.

Specifically, the plurality of reflecting mirrors 20 are arranged in an array, so that the arrangement of the reflecting mirrors 20 on the substrate 10 can be neat and orderly. The shape of the reflecting mirrors 20 can be set as a regular hexagon, so that the plurality of reflecting mirrors 20 can be arranged in a honeycomb array, so that the arrangement of the reflecting mirrors 20 on the substrate 10 is more neat and orderly.

Of course, the shape of the reflective sheet 20 can also be set to be circular, square or other shapes, and the plurality of reflective sheets 20 can also be arranged in other forms on the substrate 10 .

Referring to FIGS. 1 and 2 , in the embodiment of the present application, a plurality of lens placement tables 30 are provided on the substrate 10 , and each lens placement table 30 has a lens placement surface 31 at one end away from the substrate 10 . 31 are provided with a reflecting lens 20 . The lens placing table 30 is used to place the reflective lens 20, and the inclination direction and the inclination angle of the lens placing surface 31 are consistent with the inclination direction and inclination angle of the corresponding reflecting lens 20, so that the inclination of the lens placing surface 31 on the lens placing table 30 can be changed by changing the inclination The direction and the inclination angle are adjusted to realize the adjustment of the reflection direction of the reflective lens 20 .

Specifically, the reflective surface 21 of the reflective lens 20 is a plane or concave surface, and the side of the reflective lens 20 away from the reflective surface 21 is attached and connected to the lens placement surface 31 .

Referring to FIG. 1 , in the embodiment of the present application, an upright frame 40 is further provided on the outer peripheral side of the substrate 10 , and the outer peripheral wall of the substrate 10 is hinged on the inner peripheral wall of the upright frame 40 , so that the substrate 10 can rotate relative to the upright frame 40 . In this way, by rotating the base plate 10 and the upright frame 40 to a certain angle, the lower end of the upright frame 40 and the lower end of the base plate 10 can respectively form support surfaces, so that the reflection type projection imaging device of the present application can be stably erected on the desktop or the ground. on the equal plane.

Referring to FIG. 4 , the design method of the above-mentioned reflective projection imaging device includes the following steps:

S1. Determine the position of the projection surface, the position of the light source, and the position of the substrate.

Establish a space rectangular coordinate system o-xyz, set the projection plane on the xoz plane, set the position of the light source at point S, set the substrate to be on the vertical xoz plane, and the normal vector of the substrate is

S2. Determine the projection pattern to be formed, and determine the coordinate position of each projection light spot for generating the projection pattern according to the projection pattern to be formed.

The projection pattern is formed by combining various projection light spots, and the coordinate position of each projection light spot can be known according to the desired projection pattern, wherein the coordinate position of a certain projection light spot T in the projection pattern is (Xt, 0, Zt).

S3. Determine the number of reflecting mirrors according to the number of projection light spots, and arrange each reflecting mirror to determine the coordinate position of the center point on the reflecting surface of each reflecting mirror.

Since one projection light spot corresponds to one reflecting mirror, and the number of projection light spots is the same as the number of reflecting mirrors, the reflecting mirrors are arranged in an array in the xyz coordinate system, and the coordinates of the center point M on the reflecting surface of a reflecting mirror are The position is (0, Ym, 0).

S4. Calculate the normal vector of the reflecting surface of each reflecting lens according to the position of the light source, the coordinate position of the center point on the reflecting surface of each reflecting lens, and the coordinate position of each projection light spot.

反射光线向量为

该反射镜片的反射面的法向量为

其中：The incident ray vector at the center point M on the reflecting surface of a reflecting lens is

The reflected ray vector is

The normal vector of the reflective surface of the mirror is

in:

为

与x轴的夹角，θ为

在yoz平面内的投影同z轴的夹角。

for

The included angle with the x-axis, θ is

The angle between the projection in the yoz plane and the z-axis.

S5. Calculate the inclination direction and inclination angle of the reflective lens relative to the substrate according to the normal vector of the reflective surface of each reflective lens;

和基板的法向量

即可计算反射镜片相对于基板的倾斜方向和倾斜角。According to the normal vector of the reflecting surface of the above-mentioned mirror

and the normal vector of the substrate

The inclination direction and inclination angle of the reflecting mirror relative to the substrate can be calculated.

S6 , according to the coordinate position of the center point on the reflection surface of each reflective mirror and the inclination direction and inclination angle of each reflective mirror relative to the substrate, set each reflective mirror on the substrate.

S61. According to the coordinate position of the center point on the reflective surface of each of the reflective mirrors, a mirror placement table corresponding to the position of each mirrored mirror is arranged on the substrate;

S62. According to the inclination direction and the inclination angle of each of the reflecting mirrors relative to the substrate, a mirror placing surface parallel to the reflective surface of the reflecting mirror is set on the mirror placing table.

Through the design method of the reflective projection imaging device in this embodiment, the inclination direction and inclination angle of each reflective mirror on the substrate relative to the substrate can be calculated according to the projection pattern to be presented, so that the reflective projection can be designed and manufactured more conveniently imaging device.

In the description of the embodiments of the present application, it should be understood that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, a fixed connection may be used, or a The indirect connection through an intermediate medium may be the internal communication of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations. The orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on The orientation or positional relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as LIMITATIONS ON THIS APPLICATION. In the description of this application, "plurality" means two or more, unless it is precisely and specifically specified otherwise.

The terms "first", "second", "third", "fourth", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims (10)

1. A reflection type projection imaging device, characterized in that it comprises a base plate and a plurality of reflecting mirrors arranged on the base plate, and at least some of the reflecting mirrors among the plurality of reflecting mirrors face the base plate respectively. Different directions are inclined at different inclination angles, and a plurality of the reflecting mirrors are arranged in an array; The incident light rays directed to the reflective surfaces of the plurality of reflective sheets are reflected by the reflective surfaces of the plurality of reflective sheets to form a plurality of reflective rays directed to different directions, and a plurality of the reflective rays strike the projection surface to form a distribution A plurality of projection light spots at different positions on the projection surface; the combination of the plurality of projection light spots forms a projection pattern. 2 . The reflective projection imaging device according to claim 1 , wherein a plurality of lens placement tables are arranged on the substrate, and each end of the lens placement platforms away from the substrate has a lens placement surface. 3 . Each of the mirror placement surfaces is provided with one of the reflecting mirrors. 3 . The reflective projection imaging device according to claim 2 , wherein the reflective surface of the reflective sheet is a plane or a concave surface, and the side of the reflective sheet away from the reflective surface is attached and connected to the mirror. 4 . placed on the surface. 4 . The reflective projection imaging device according to claim 1 , wherein the shape of the reflective sheet is a regular hexagon, and a plurality of the reflective sheets are arranged in a honeycomb array. 5 . 5 . The reflective projection imaging device according to claim 1 , wherein an upright frame is provided on the outer peripheral side of the substrate, and the outer peripheral wall of the substrate is hinged with the inner peripheral wall of the upright frame. 6 . , the base plate can be rotated relative to the upright frame. 6 . The reflective projection imaging device according to claim 1 , wherein the reflective lens is a glass lens or a metal lens. 7 . 7 . The reflective projection imaging device according to claim 1 , wherein the substrate is a plastic substrate or a metal substrate. 8 . 8. A design method of the reflective projection imaging device according to any one of claims 1-7, characterized in that, comprising the steps of: Determine the position of the projection surface, the position of the light source, and the position of the substrate; Determine the projection pattern to be formed, and determine the coordinate position of each projection light spot that generates the projection pattern according to the projection pattern to be formed; Determine the number of reflecting mirrors according to the number of projection light spots, arrange each reflecting mirror, and determine the coordinate position of the center point on the reflecting surface of each reflecting mirror; Calculate the normal vector of the reflecting surface of each reflecting lens according to the position of the light source, the coordinate position of the center point on the reflecting surface of each reflecting lens, and the coordinate position of each of the projection light spots; Calculate the inclination direction and inclination angle of the reflecting mirror relative to the substrate according to the normal vector of the reflecting surface of each reflecting mirror; Each of the reflection sheets is provided on the substrate according to the coordinate position of the center point on the reflection surface of each of the reflection sheets and the inclination direction and inclination angle of each of the reflection sheets with respect to the substrate. 9 . The method for designing a reflective projection imaging device according to claim 8 , wherein on the coordinate position of the center point on the reflective surface of each of the reflective mirrors and the relative position of each of the reflective mirrors to the The inclination direction and inclination angle of the substrate, in the step of arranging each of the reflecting mirrors on the substrate, further comprising: According to the coordinate position of the center point on the reflective surface of each of the reflective mirrors, a mirror placement table corresponding to the position of each mirrored mirror is arranged on the substrate; According to the inclination direction and inclination angle of each of the reflecting mirrors with respect to the substrate, a mirror placing surface parallel to the reflecting surface of the reflecting mirror is provided on the mirror placing table. 10 . The method for designing a reflective projection imaging device according to claim 8 , wherein, in said determining the number of reflecting mirrors according to the number of said projection light spots, and arranging each said reflecting mirror, 10 . In the step of determining the coordinate position of the center point on the reflecting surface of each of the reflecting mirrors, the arrangement of the reflecting mirrors is an array arrangement.

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