CN220419658U - Lens adjustment mechanism and projection ray apparatus - Google Patents

Abstract

The application discloses lens adjustment mechanism and projection ray apparatus relates to optical projection equipment technical field, the lens adjustment mechanism of this application, including the lens fixed bolster, rotate the pivot support of being connected with the lens fixed bolster, and set up the adjusting part between lens fixed bolster and pivot support, adjusting part is including setting up in the elastic component of pivot support one end and setting up in the regulating part of pivot support other end, the center of rotation of lens fixed bolster and pivot support is located between elastic component and the regulating part, the distance of lens fixed bolster and pivot support in other end department is in order to compress or release the elastic component, make the lens fixed bolster rotate for the pivot support, the lens fixed bolster is used for fixed lens, in order to adjust the angle of lens when the relative rotation of lens fixed bolster. The lens adjustment mechanism that this application provided for adjustment process is simple easy to operate, and adjustment efficiency is high.

Description

Lens adjustment mechanism and projection ray apparatus

Technical Field

The application relates to the technical field of optical projection equipment, in particular to a lens adjusting mechanism and a projection optical machine.

Background

The projector is used for connecting an imaging device such as a computer or a mobile phone, and enlarging and projecting an image output by the imaging device onto an imaging screen. With the development of miniaturization, miniature projectors are becoming popular, and a core component of the miniature projector is a projection optical machine. The working principle of the projection optical machine is as follows: the optical illumination system emits light subjected to light splitting, light homogenizing and the like to be irradiated to an image modulation element such as a digital micromirror or a liquid crystal panel, and then amplified and projected through a projection lens. Here, in view of portability, it is often necessary to provide a mirror inside the optical illumination system to change the direction of the optical path. In practical application, because the precision of the projection optical machine is high, the influence links on the projection quality are more, wherein the installation precision of the reflecting mirror belongs to one of the key links, and the projector further comprises a reflecting mirror adjusting device for adjusting the reflecting mirror due to the correct realization of the functions of the reflecting mirror and the compensation of errors of other links.

In the prior art, the reflector of the projection light machine is adjusted in such a way that the reflector is fixed on the reflector bracket, 4 adjusting bolts apply pushing force to four corners of the reflector bracket, and 1 connecting bolt in the middle applies pulling force to the reflector bracket, so that the reflector bracket changes in position under the interaction of the pushing force of 4 points and the pulling force of the middle point to realize the reflector adjusting function, but the adjusting process is difficult to control, and the adjusting efficiency is extremely low.

Disclosure of Invention

An object of the application is to provide a lens adjustment mechanism for the adjustment process is simple easy to operate, and adjustment efficiency is high.

The embodiment of the application provides a lens adjustment mechanism on the one hand, including the lens fixed bolster, the pivot support of being connected with the lens fixed bolster rotation, and set up the adjusting part between lens fixed bolster and pivot support, the adjusting part is including setting up in the elastic component of pivot support one end and setting up in the adjusting part of pivot support other end, the rotation center of lens fixed bolster and pivot support is located between elastic component and the adjusting part, the distance of lens fixed bolster and pivot support in other end department is in order to compress or release the elastic component, make the lens fixed bolster rotate for the pivot support, the lens fixed bolster is used for fixed lens, in order to adjust the angle of lens when the lens fixed bolster relative rotation.

As an implementation mode, an adjusting hole is formed in the rotating shaft support, the adjusting piece is an adjusting screw, and the adjusting screw penetrates through the adjusting hole to be abutted against the side face, close to the rotating shaft support, of the lens fixing support, so that the distance between the lens fixing support and the rotating shaft support at the other end is adjusted when the adjusting screw is rotated.

As an implementation mode, the elastic piece and the adjusting piece are arranged on the rotating shaft support along the first direction, the two ends of the rotating shaft support along the second direction extend out of the first connecting piece towards the lens fixing support, the two ends of the lens fixing support along the second direction are provided with the second connecting piece, and the first connecting piece is rotationally connected with the second connecting piece so that the lens fixing support is rotationally connected with the rotating shaft support.

As an implementation manner, the first connecting piece is provided with a rotating hole, the second connecting piece is a rotating shaft, and the rotating shaft extends into the rotating hole and rotates in the rotating hole.

As an implementation manner, the first connecting piece is disposed at the center of the rotating shaft support along the second direction, and the second connecting piece is disposed at the center of the lens fixing support along the second direction.

As an embodiment, the spring element comprises at least two compression springs, which extend in the second direction.

As an implementation manner, the rotating shaft support is provided with a guide post corresponding to the compression spring, and the compression spring is sleeved on the guide post.

As an embodiment, the first connector is provided with a mounting hole, and the mounting hole is communicated with the rotation hole to mount the rotation shaft through the mounting hole.

As an implementation mode, one end or two ends of the outer side wall of the lens fixing support along the first direction are provided with limiting columns which are used for propping against the side wall of the rotating shaft support in the rotating process to limit the rotating range of the lens fixing support.

The embodiment of the application on the other hand provides a projection ray apparatus, including the shell, set up the optical subassembly in the shell to and set up above-mentioned lens adjustment mechanism in the shell, optical subassembly includes the speculum, and the speculum is fixed with lens adjustment mechanism's lens fixed bolster, and lens adjustment mechanism's pivot support is fixed with the shell, and lens adjustment mechanism's regulating part passes the shell and exposes.

The beneficial effects of the embodiment of the application include:

the application provides a lens adjustment mechanism, including the lens fixed bolster, the pivot support of being connected with the lens fixed bolster rotation, and set up the adjusting part between lens fixed bolster and pivot support, adjusting part is including setting up in the elastic component of pivot support one end and setting up in the regulating part of pivot support other end, the rotation center of lens fixed bolster and pivot support is located between elastic component and the regulating part, the distance of lens fixed bolster and pivot support in other end department is in order to compress or release the elastic component, when adjusting the regulating part and making the distance increase of other end department regulation lens fixed bolster and pivot support, the distance that is located the regulation lens fixed bolster of one end department and pivot support reduces, thereby make lens fixed bolster rotate for the pivot support, the lens fixed bolster is used for fixed lens, in order to adjust the angle of lens when lens fixed bolster rotates relatively. The lens adjustment mechanism of this application only needs to adjust the regulation that the lens fixed bolster angle can be realized to the regulating part, realizes the regulation of lens angle promptly, and the adjustment process is simple easy operation, and adjustment efficiency is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a lens adjusting mechanism according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of a lens adjustment mechanism according to an embodiment of the present disclosure;

FIG. 3 is a second schematic diagram of a lens adjusting mechanism according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view taken along line I-I of FIG. 3;

FIG. 5 is a cross-sectional view taken along line II-II of FIG. 3;

FIG. 6 is a schematic diagram of a projection light machine according to an embodiment of the present disclosure;

FIG. 7 is a second schematic diagram of a projection light machine according to the embodiment of the present disclosure;

fig. 8 is a cross-sectional view taken along line iii-iii of fig. 7.

Icon: 10-a lens adjustment mechanism; 11-a lens fixing bracket; 111-a rotation axis; 112-a limit column; 12-a rotating shaft bracket; 121-a first connector; 122-a rotation hole; 123-mounting holes; 131-a compression spring; 132-adjusting the screw; 133-guide posts; 100-projection light machine; 20-a lens; 21-a housing.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In order to reduce the size of the projection light machine, a mirror is usually disposed in the projection light machine to turn the light path, and the mirror is disposed with an adjustable angle to improve the projection quality of the projection light machine. The reflector adjusting mechanism in the prior art has low adjusting efficiency and is difficult to control precision.

The embodiment of the application provides a lens adjustment mechanism 10, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, including lens fixed bolster 11, the pivot support 12 of being connected with the rotation of lens fixed bolster 11, and set up the adjusting part between lens fixed bolster 11 and pivot support 12, adjusting part is including setting up the elastic component in pivot support 12 one end and setting up the regulating part in pivot support 12 other end, the center of rotation of lens fixed bolster 11 and pivot support 12 is located between elastic component and the regulating part, the distance of regulating part adjustment lens fixed bolster 11 and pivot support 12 in other end department is in order to compress or release the elastic component, make lens fixed bolster 11 rotate for pivot support 12, lens fixed bolster 11 is used for fixed lens 20, in order to adjust the angle of lens 20 when lens fixed bolster 11 rotates relatively.

The embodiment of the application provides a lens adjustment mechanism 10 for adjusting lens 20 angle, specifically, lens adjustment mechanism 10 of this application embodiment, including lens fixed bolster 11 and pivot support 12, the fixed lens 20 that is provided with on the lens fixed bolster 11, lens fixed bolster 11 and pivot support 12 rotate and connect to drive lens 20 when lens fixed bolster 11 rotates for the pivot between, realize the angle modulation of lens 20. The angle between the lens fixing support 11 and the rotating shaft support 12 is adjusted by adopting the adjusting component, wherein the adjusting component comprises an elastic piece arranged at one end of the rotating shaft support 12 and an adjusting piece arranged at the other end of the rotating shaft support 12, because the adjusting component is arranged between the lens fixing support 11 and the rotating shaft support 12, two ends of the elastic piece are propped against the lens fixing support 11 and the rotating shaft support 12, the adjusting piece is connected with the lens fixing support 11 and the rotating shaft support 12, the rotation centers of the lens fixing support 11 and the rotating shaft support 12 are positioned between the elastic piece and the adjusting piece, the two ends of the lens fixing support 11 rotate around the rotation centers, the adjusting piece is used for adjusting the distance between the lens fixing support 11 and the rotating shaft support 12 at the other end, so that the elastic piece positioned at one end compresses and accumulates elastic potential energy or releases the elastic potential energy, and the rotating shaft support 12 is fixed with the shell 21 of the projector 100, so that the lens fixing support 11 rotates, and the angle of the lens 20 is adjusted.

For convenience of description, one end where the elastic member is provided is referred to as an elastic end, and the other end layer where the regulating member is provided is referred to as a regulating end. Specifically, in practical application, when the lens 20 needs to turn to the elastic end, the adjusting member is adjusted, so that the distance between the lens fixing bracket 11 and the rotating shaft bracket 12 at the adjusting end is increased, and because the rotation centers of the lens fixing bracket 11 and the rotating shaft bracket 12 are located between the elastic member and the adjusting member, when the distance between the lens fixing bracket 11 and the rotating shaft bracket 12 at the adjusting end is increased, the distance between the lens fixing bracket 11 and the rotating shaft bracket 12 at the elastic end is reduced, so that the lens fixing bracket 11 rotates towards the elastic end relative to the rotating shaft bracket 12; when the lens 20 is required to turn to the adjustment end, the adjustment member is adjusted such that the distance between the adjustment end lens fixing bracket 11 and the rotation shaft bracket 12 is reduced, and since the rotation centers of the lens fixing bracket 11 and the rotation shaft bracket 12 are located between the elastic member and the adjustment member, when the distance between the adjustment end lens fixing bracket 11 and the rotation shaft bracket 12 is reduced, the elastic member of the elastic end releases potential energy such that the distance between the elastic end lens fixing bracket 11 and the rotation shaft bracket 12 is increased such that the lens fixing bracket 11 rotates toward the adjustment end with respect to the rotation shaft bracket 12.

According to the adjusting process, when the lens 20 is adjusted, the lens adjusting mechanism 10 of the embodiment of the application only needs to adjust one adjusting piece, so that the adjusting process becomes simple and easy to operate, and the adjusting efficiency is high.

It should be noted that, the lens adjusting mechanism 10 of the embodiment of the present application is applied to the projection optical machine 100 and is used for adjusting the reflecting mirror, and according to the optical path of the projection optical machine 100, the adjusting of the reflecting mirror only needs one-dimensional adjustment, that is, the lens adjusting mechanism 10 of the present application simplifies the adjusting operation and improves the adjusting efficiency while realizing one-dimensional adjustment of the angle of the lens 20.

The lens adjustment mechanism 10 according to the embodiment of the present application is not limited to the projector 100, and the lens adjustment mechanism 10 according to the embodiment of the present application may be used in any case where one-dimensional adjustment of the angle of the lens 20 is required.

The application provides a lens adjustment mechanism 10, including lens fixed bolster 11, the pivot support 12 of being connected with lens fixed bolster 11 rotation, and set up the adjusting part between lens fixed bolster 11 and pivot support 12, adjusting part is including setting up in the elastic component of pivot support 12 one end and setting up in the adjusting part of pivot support 12 other end, the center of rotation of lens fixed bolster 11 and pivot support 12 is located between elastic component and the adjusting part, the adjusting part adjusts the distance of lens fixed bolster 11 and pivot support 12 in other end department in order to compress or release the elastic component, when adjusting the adjusting part makes the distance increase of other end department adjustment lens fixed bolster 11 and pivot support 12, the distance that is located the adjustment lens fixed bolster 11 and pivot support 12 of one end department reduces, thereby make lens fixed bolster 11 rotate for pivot support 12, lens fixed bolster 11 is used for fixed lens 20, in order to adjust the angle of lens 20 when lens fixed bolster 11 relatively rotates. The lens adjustment mechanism 10 of this application only needs to adjust the regulation that the lens fixed bolster 11 angle can be realized to the regulating part, realizes the regulation of lens 20 angle promptly, and the adjustment process is simple easy operation, and adjustment efficiency is high.

Optionally, as shown in fig. 2 and 5, the rotating shaft support 12 is provided with an adjusting hole, the adjusting member is an adjusting screw 132, and the adjusting screw 132 passes through the adjusting hole to abut against a side surface of the lens fixing support 11 near the rotating shaft support 12, so as to adjust the distance between the lens fixing support 11 and the rotating shaft support 12 at the other end when the adjusting screw 132 is rotated.

When the lens fixing bracket 11 is adjusted to be the adjusting screw 132, the adjusting screw 132 passes through the adjusting hole to be abutted against the lens fixing bracket 11, specifically, when the adjusting screw 132 is rotated clockwise, the screw is made to move toward the lens fixing bracket 11, thereby abutting against the lens fixing bracket 11 and making the lens fixing bracket 11 rotate in a direction away from the rotating shaft bracket 12, so that the distance between the lens fixing bracket 11 and the rotating shaft bracket 12 at the adjusting end is increased, at this time, the elastic end of the lens fixing bracket 11 moves toward a direction approaching the rotating shaft bracket 12, compressing the elastic member, and making the lens fixing bracket 11 rotate; when the adjusting screw 132 is rotated counterclockwise, the screw moves toward the direction away from the lens fixing bracket 11, and at this time, the abutment against the lens fixing bracket 11 is canceled, and at the same time, the elastic member releases elastic potential energy, so that the lens fixing bracket 11 at the elastic end moves toward the direction away from the rotating shaft bracket 12, and the lens fixing bracket 11 is rotated. The embodiment of the application adopts the adjusting screw 132 as an adjusting piece, is stable in adjustment and high in adjustment precision.

It will be appreciated that the adjustment screw 132 adjusts the distance between the lens fixing bracket 11 and the shaft bracket 12 at the other end such that the adjustment screw 132 is threadedly connected to the adjustment hole, i.e., the adjustment hole is a threaded hole.

In one implementation manner of the present embodiment, as shown in fig. 1 and fig. 2, the elastic element and the adjusting element are disposed on the rotating shaft support 12 along the first direction, the two ends of the rotating shaft support 12 along the second direction extend toward the lens fixing support 11 to form a first connecting element 121, the two ends of the lens fixing support 11 along the second direction are provided with second connecting elements, and the first connecting element 121 is rotationally connected with the second connecting elements so that the lens fixing support 11 is rotationally connected with the rotating shaft support 12.

The first connecting piece 121 has been stretched out at pivot support 12's both ends, and lens fixed bolster 11's both ends set up the second connecting piece, and first connecting piece 121 and second connecting piece correspond to be connected for lens fixed bolster 11 is along the second direction, and first direction is perpendicular with the second direction, can stably rotate the connection between two tie points on the second direction make lens 20 fixed, thereby makes the lens adjustment mechanism 10 of this application embodiment realize stable one-dimensional regulation.

Alternatively, as shown in fig. 1 and 2, the first connecting member 121 is provided with a rotation hole 122, and the second connecting member is a rotation shaft 111, and the rotation shaft 111 extends into the rotation hole 122 and rotates in the rotation hole 122.

The rotary connection of the first connecting piece 121 and the second connecting piece is realized by adopting the rotary shaft 111 and the rotary hole 122, and the structure is simple and the operation is convenient. The rotation shaft 111 may be a cylinder with a circular cross section, or may be a square as shown in fig. 2, and the contact position between the rotation shaft 111 and the rotation hole 122 may be an arc shape, so that the rotation is smoother.

In one implementation manner of the embodiment of the present application, as shown in fig. 2, the first connecting piece 121 is disposed at the center of the rotating shaft support 12 along the second direction, and the second connecting piece is disposed at the center of the lens fixing support 11 along the second direction, so that the lengths of the rotating shaft supports 12 located at two sides of the first connecting piece 121 are the same, the lengths of the lens fixing supports 11 located at two sides of the second connecting piece are the same, and the rotation process is relatively stable, thereby realizing stable rotation of the lens fixing supports 11.

Alternatively, as shown in fig. 2 and 4, the elastic member includes at least two compression springs 131, and the at least two compression springs 131 extend in the second direction.

In order to balance the holding force of the elastic member on the lens fixing bracket 11 in the second direction, the elastic member of the embodiment of the present application includes at least two compression springs 131, and the center points of the at least two compression springs 131 are located on the same line with the adjusting screw 132 in the first direction.

As shown in fig. 2, when two compression springs 131 are included, the centers of the two compression springs 131 are positioned on the same line as the adjustment screw 132 in the first direction.

In one implementation manner of the embodiment of the present application, as shown in fig. 4 and 5, the rotating shaft bracket 12 is provided with a guide post 133 corresponding to the compression spring 131, and the compression spring 131 is sleeved on the guide post 133.

In order to improve the stability of the compression spring 131, a guide post 133 is arranged on the rotating shaft bracket 12 corresponding to the compression spring 131, the compression spring 131 is sleeved on the guide post 133, the guide post 133 plays a guiding role on the compression spring 131, and displacement of the compression spring 131 is avoided.

Alternatively, as shown in fig. 2, the first connection member 121 is provided with a mounting hole 123, and the mounting hole 123 communicates with the rotation hole 122 to mount the rotation shaft 111 through the mounting hole 123.

In order to facilitate connection of the lens fixing support 11 and the rotating shaft support 12, the rotating shaft 111 extends into the rotating hole 122, a mounting hole 123 which is communicated with the rotating hole 122 is formed in the first connecting piece 121, when the lens adjusting mechanism 10 is assembled, the rotating shaft 111 extends into the rotating hole 122, so that the lens fixing support 11 is connected with the rotating shaft support 12, and the mounting hole 123 is formed in the first connecting piece 121, so that the assembly of the lens adjusting mechanism 10 can be facilitated.

The size of the mounting hole 123 should be such that the normal rotation of the rotation shaft 111 is not affected.

In one implementation manner of the embodiment of the present application, as shown in fig. 1 and 2, one or two ends of the outer side wall of the lens fixing support 11 along the first direction are provided with a limiting post 112 for abutting against the side wall of the rotating shaft support 12 during the rotation process, so as to limit the rotation range of the lens fixing support 11.

When the lens adjustment mechanism 10 of the embodiment of the application is applied to the projection optical machine 100, when the angle adjustment is performed on the reflector, the inclination of the reflector has a certain range, so that the inclination of the reflector is adjusted to be outside the inclination range of the reflector in the adjustment process, the limiting post 112 is arranged at one end or two ends of the outer side wall of the lens fixing support 11 along the first direction, the limiting post 112 rotates along with the rotation of the lens fixing support 11, and when the side wall between the limiting post 112 and the rotating shaft abuts against, the lens fixing support 11 cannot continue to rotate due to the limiting of the limiting post 112, so that the overlarge inclination of the reflector is avoided.

The embodiment of the application also discloses a projection optical engine 100, as shown in fig. 6, 7 and 8, including a housing 21, an optical component disposed in the housing 21, and the lens adjusting mechanism 10 disposed in the housing 21, where the optical component includes a reflecting mirror, the reflecting mirror is fixed to a lens fixing bracket 11 of the lens adjusting mechanism 10, a rotating shaft bracket 12 of the lens adjusting mechanism 10 is fixed to the housing 21, and an adjusting member of the lens adjusting mechanism 10 is exposed through the housing 21. The projection light engine 100 includes the same structure and advantages as the lens 20 adjustment bracket in the previous embodiment. The structure and advantages of the lens 20 adjustment bracket have been described in detail in the previous embodiments, and will not be described here.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a lens adjustment mechanism, its characterized in that, including lens fixed bolster, with the pivot support that the lens fixed bolster rotates to be connected, and set up in the lens fixed bolster with adjusting part between the pivot support, adjusting part including set up in the elastic component of pivot support one end with set up in the adjusting part of pivot support other end, the lens fixed bolster with the center of rotation of pivot support is located between the elastic component with the adjusting part, the adjusting part is adjusted in the other end department the lens fixed bolster with the distance of pivot support is in order to compress or release the elastic component, makes the lens fixed bolster for the pivot support rotates, the lens fixed bolster is used for fixed lens, in order to adjust when the lens fixed bolster relative rotation the angle of lens.

2. The lens adjusting mechanism according to claim 1, wherein the rotating shaft support is provided with an adjusting hole, the adjusting piece is an adjusting screw, and the adjusting screw passes through the adjusting hole to be abutted against the side surface of the lens fixing support, which is close to the rotating shaft support, so as to adjust the distance between the lens fixing support and the rotating shaft support at the other end when the adjusting screw is rotated.

3. The lens adjusting mechanism according to claim 1, wherein the elastic member and the adjusting member are disposed on the rotating shaft support along a first direction, two ends of the rotating shaft support along a second direction extend toward the lens fixing support, two ends of the lens fixing support along the second direction are provided with second connecting members, the first connecting members are rotatably connected with the second connecting members so that the lens fixing support is rotatably connected with the rotating shaft support, and the first direction is perpendicular to the second direction.

4. The lens adjustment mechanism of claim 3, wherein the first connector has a rotation hole and the second connector has a rotation shaft, and the rotation shaft extends into the rotation hole and rotates within the rotation hole.

5. The lens adjustment mechanism of claim 3, wherein the first connector is disposed at a center of the rotating shaft bracket along the second direction, and the second connector is disposed at a center of the lens fixing bracket along the second direction.

6. A lens adjustment mechanism according to claim 3, characterized in that the elastic member comprises at least two compression springs, at least two of which springs extend in the second direction.

7. The lens adjusting mechanism according to claim 6, wherein the rotating shaft support is provided with a guide post corresponding to the pressure spring, and the pressure spring is sleeved on the guide post.

8. The lens adjustment mechanism of claim 4, wherein the first connector has a mounting hole formed therein, the mounting hole being in communication with the rotation hole for mounting the rotation shaft therethrough.

9. The lens adjusting mechanism of claim 5, wherein one or both ends of the outer side wall of the lens fixing support along the first direction are provided with a limiting post for abutting against the side wall of the rotating shaft support during rotation to limit the rotation range of the lens fixing support.

10. A projection light machine, characterized by comprising a housing, an optical component arranged in the housing, and a lens adjusting mechanism according to any one of claims 1-9 arranged in the housing, wherein the optical component comprises a reflecting mirror, the reflecting mirror is fixed with a lens fixing bracket, a rotating shaft bracket of the lens adjusting mechanism is fixed with the housing, and an adjusting piece of the lens adjusting mechanism is exposed through the housing.