Optical path adjusting mechanism and optical device
By using a ball-end support and adjustment component in the optical path adjustment mechanism, the problem of cumbersome adjustment in existing optical path adjustment mechanisms is solved, enabling convenient control of the bracket's active angle and direction, and reducing production and assembly costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN DONGZHENG OPTICAL TECH CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-24
Smart Images
Figure CN224553567U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical equipment technology, and more specifically, to an optical path adjustment mechanism and optical device. Background Technology
[0002] In optical systems, the optical path adjustment mechanism is a crucial component for ensuring image quality. A common optical path adjustment mechanism mainly consists of a base and a bracket holding a reflector. The four corners of the bracket are connected to the base by screws. Tightening these screws allows the bracket to move relative to the base, adjusting the tilt angle of the reflector. However, with this type of optical path adjustment mechanism, the fulcrum of the bracket's movement relative to the base changes dynamically when different screws are tightened, making it difficult to determine the bracket's angle and direction of movement. The adjustment process requires repeated adjustments of different screws, making it rather cumbersome. Utility Model Content
[0003] The purpose of this application is to provide an optical path adjustment mechanism and optical device, which aims to solve the technical problem that the process of adjusting the tilt angle of the reflector in the prior art is relatively cumbersome.
[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0005] In a first aspect, this application provides an optical path adjustment mechanism, including a base, a bracket, an adjustment assembly, a support member, and a reflector, wherein:
[0006] The bracket has a first side and a second side spaced apart along a first direction, and the first side of the bracket is connected to the base via the adjustment assembly;
[0007] The support member is installed on the second side of the bracket, and one end of the support member is set as a ball end. The second side of the bracket is supported on the base through the ball end.
[0008] The reflector is mounted on the bracket;
[0009] The adjustment component is used to allow the bracket to move relative to the base with the ball end as the fulcrum, so as to adjust the tilt angle of the reflector.
[0010] In one possible design, the base has a first light-transmitting hole on one side in the second direction and a second light-transmitting hole on the other side in the third direction, with the second direction being perpendicular to the third direction; the support member is threadedly connected to the bracket, and the support member is configured such that when the support member is screwed, the bracket can be driven to move relative to the base along the second direction.
[0011] In one possible design, the base is provided with a mating groove having a groove edge surrounding its own opening, and a portion of the structure at the ball end extends into the mating groove and contacts the groove edge.
[0012] In one possible design, the groove edge surrounds a circular opening; and / or,
[0013] The groove edge is provided with a chamfer or rounded corner.
[0014] In one possible design, the optical path adjustment mechanism further includes an elastic limiting structure mounted on the base; the base has a support surface, the ball end is supported on the support surface, a limiting space is formed between the elastic limiting structure and the support surface, at least a portion of the structure on the second side of the bracket extends into the limiting space, and the elastic limiting structure applies a force to the bracket close to the support surface.
[0015] In one possible design, the elastic limiting structure has elastic deformation capability; or,
[0016] The elastic limiting structure includes a movable component and an elastic connector. The elastic connector connects the base and the movable component respectively, and the limiting space is formed between the movable component and the supporting surface.
[0017] In one possible design, a limiting block is provided on the second side of the bracket, the limiting block extends into the limiting space, and the elastic limiting structure applies a force to the limiting block close to the supporting surface.
[0018] In one possible design, the edge of the limiting block facing the side of the elastic limiting structure is rounded.
[0019] In one possible design, the regulating component includes:
[0020] Multiple adjusting screws are provided. Multiple through holes are provided at intervals along the fourth direction on the first side of the bracket. The fourth direction is set at an angle to the first direction. The multiple through holes are provided one-to-one with the multiple adjusting screws. Each adjusting screw passes through the corresponding through hole and is threaded to the base.
[0021] An elastic element is disposed between the first side of the bracket and the base, the elastic element having a tendency to drive the first side of the bracket away from the base.
[0022] Secondly, this application also provides an optical device, including the optical path adjustment mechanism provided by any of the above-mentioned technical solutions.
[0023] The beneficial effects of the optical path adjustment mechanism provided in this application are as follows: Compared with the prior art, in the optical path adjustment mechanism of this application, the first side of the bracket is connected to the base through the adjustment component, and the second side is supported on the base through the installation of the support member and the ball end of the support member. The outer surface of the ball end is a spherical crown surface. The bracket is supported on the base through the ball end. When the first side of the bracket is moved relative to the base by the adjustment component, the entire bracket can always move relative to the base in any direction with the ball end as the fulcrum. In this way, the fulcrum of the bracket is fixed during the movement of the bracket relative to the base, which makes it easy to confirm the movement angle and movement direction of the bracket. This makes it easier to quickly adjust the tilt angle of the reflector to the target tilt angle, and the adjustment method is simpler.
[0024] The beneficial effects of the optical device provided in this application are as follows: Compared with the prior art, since the optical device provided in this application includes the optical path adjustment mechanism provided by any of the above-mentioned technical solutions, the optical device provided in this application has at least all of the above-mentioned beneficial effects, which will not be repeated here. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the overall structure of the optical path adjustment mechanism provided in one embodiment of this application;
[0027] Figure 2 This is an exploded view of the components of an optical path adjustment mechanism provided in one embodiment of this application;
[0028] Figure 3 This is a cross-sectional schematic diagram of an optical path adjustment mechanism provided in one embodiment of this application;
[0029] Figure 4 This is a schematic diagram of the structure of the base and adjustment component in the optical path adjustment mechanism provided in one embodiment of this application;
[0030] Figure 5 This is a schematic diagram of the structure of the support member in the optical path adjustment mechanism provided in one embodiment of this application;
[0031] Figure 6 yes Figure 3 A magnified view of a portion of point A in the middle.
[0032] The details of the reference numerals used in the above figures are as follows:
[0033] 100. Base; 110. First plate; 111. First light-transmitting hole; 120. Second plate; 121. Second light-transmitting hole; 130. Mating groove; 131. Groove edge;
[0034] 200, bracket; 210, first side; 220, second side; 221, limiting block; 222, threaded hole;
[0035] 300. Adjusting assembly; 310. Adjusting screw; 320. Elastic element;
[0036] 400, Support component; 410, Cylinder; 411, Groove; 420, Ball end;
[0037] 500. Reflector;
[0038] 610. First optical lens; 620. Second optical lens;
[0039] 700. Elastic limiting structure; 710. Limiting space; 720. Clearance hole. Detailed Implementation
[0040] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0044] In optical systems, the optical path adjustment mechanism is a crucial component for ensuring imaging quality. Traditional optical path adjustment mechanisms primarily achieve the required optical path by strictly controlling the manufacturing precision of individual optical elements and the assembly precision between multiple optical elements. However, the higher the precision requirement of optical elements, the higher their manufacturing cost, and it becomes difficult to meet the precision requirements during mass production. Furthermore, the cumulative effect of tolerances during the assembly of multiple optical elements makes it difficult to control the overall precision of the optical path adjustment mechanism and meet assembly requirements.
[0045] In related technologies, some optical path adjustment mechanisms mainly consist of a base and a bracket with a reflector mounted on it. The four corners of the bracket are connected to the base by screws. By turning the screws, the bracket can move relative to the base to adjust the tilt angle of the reflector, thus achieving the required optical path. However, with this type of optical path adjustment mechanism, the fulcrum of the bracket's movement relative to the base changes dynamically when different screws are turned, making it difficult to determine the bracket's angle of movement. During the adjustment process, different screws need to be repeatedly adjusted, making the adjustment method rather cumbersome.
[0046] To address the technical problems existing in the aforementioned related technologies, this application provides an optical path adjustment mechanism and an optical device. To illustrate the technical solution described in this application, a detailed description is provided below in conjunction with specific accompanying drawings and embodiments.
[0047] First Embodiment
[0048] like Figure 1 and Figure 2 As shown, this embodiment provides an optical path adjustment mechanism, including a base 100, a bracket 200, an adjustment component 300, a support member 400, and a reflector 500. The bracket 200 has a first side 210 and a second side 220 spaced apart along a first direction (BB). The first side 210 of the bracket 200 is connected to the base 100 via the adjustment component 300. The support member 400 is mounted on the second side 220 of the bracket 200, and one end of the support member 400 is configured as a ball-end end 420. The second side 220 of the bracket 200 is supported on the base 100 via the ball-end end 420. The reflector 500 is mounted on the bracket 200. The adjustment component 300 is used to allow the bracket 200 to move relative to the base 100 with the ball-end end 420 as a fulcrum, thereby adjusting the tilt angle of the reflector 500.
[0049] In the optical path adjustment mechanism of this embodiment, the first side 210 of the bracket 200 is connected to the base 100 through the adjustment component 300, and the second side 220 is supported on the base 100 through the mounting support 400 and the ball end 420 of the support 400. The outer surface of the ball end 420 is a spherical crown. The bracket 200 is supported on the base 100 through the ball end 420. When the first side 210 of the bracket 200 is moved relative to the base 100 by the adjustment component 300, the bracket 200 as a whole can always move relative to the base 100 in any direction with the ball end 420 as the fulcrum. In this way, the fulcrum of the bracket 200 is fixed during the movement of the bracket relative to the base 100, which makes it easy to confirm the movement angle and movement direction of the bracket 200, thereby making it easier to quickly adjust the tilt angle of the reflector 500 to the target tilt angle, and the adjustment method is simpler.
[0050] Furthermore, since the optical path adjustment mechanism provided in this embodiment can adjust the tilt angle of the reflector 500, once the optical path adjustment mechanism is assembled, the tilt angle of the reflector 500 can be adjusted to ensure the optical path meets the requirements. This reduces the manufacturing and assembly precision requirements of each component in the optical path adjustment mechanism, thus helping to lower production costs.
[0051] In one possible design, such as Figure 3 and Figure 4 As shown, the base 100 has a first light-transmitting hole 111 on one side of the second direction (CC) and a second light-transmitting hole 121 on one side of the third direction (DD). The second direction (CC) and the third direction (DD) are perpendicular to each other.
[0052] In some embodiments, the base 100 includes a first plate 110 and a second plate 120, which are arranged at an included angle and connected to each other. A mounting area is formed between the first plate 110 and the second plate 120, and the bracket 200 is located within the mounting area. The first side 210 of the bracket 200 is mounted on the second plate 120 via an adjusting assembly 300, and the second side 220 of the bracket 200 is supported on the first plate 110 via a ball end 420 of a support member 400. The first plate 110 is perpendicular to the second direction (CC) and has a first light-transmitting hole 111 extending through the second direction (CC). The second plate 120 is perpendicular to the third direction (DD) and has a second light-transmitting hole 121 extending through the third direction (DD).
[0053] In this embodiment, one of the first light-passing aperture 111 and the second light-passing aperture 121 serves as the light-inlet aperture, and the other serves as the light-outlet aperture. The light beam can be emitted through the light-inlet aperture onto the reflector 500, reflected by the reflector 500, and emitted from the light-outlet aperture.
[0054] The support member 400 is threadedly connected to the bracket 200. The support member 400 is configured such that turning the support member 400 drives the bracket 200 to move relative to the base 100 along a second direction (CC). With this configuration, turning the support member 400 drives the bracket 200 and the reflector 500 to move along the second direction (CC), thereby adjusting the distance between the reflector 500 and the first light-transmitting aperture 111 and the second light-transmitting aperture 121. Therefore, the optical path adjustment mechanism provided in this embodiment only requires turning the support member 400 to simultaneously adjust the eccentricity and optical path of the reflected optical path, making operation very simple. It should be noted that the reflected optical path refers to the path of the light beam after reflection by the reflector 500; the eccentricity of the reflected optical path refers to the distance between the center of the reflected optical path and the center of the light-transmitting aperture in a plane perpendicular to the axis of the light-transmitting aperture; and the optical path refers to the distance traveled by the light beam from the entrance aperture to the reflector 500 and then reflected by the reflector 500 to the light-transmitting aperture.
[0055] In some embodiments, a first optical lens 610 is disposed on the side of the first light-passing aperture 111 facing away from the reflector 500. The first optical lens 610 and the first light-passing aperture 111 are directly opposite each other in the second direction (CC), that is, the line connecting the center of the first optical lens 610 and the center of the first light-passing aperture 111 is parallel to the second direction (CC). A second optical lens 620 is disposed on the side of the second light-passing aperture 121 facing away from the reflector 500. The second optical lens 620 and the second light-passing aperture 121 are directly opposite each other in the third direction (DD), that is, the line connecting the center of the second optical lens 620 and the center of the second light-passing aperture 121 is parallel to the third direction (DD). Generally, in a plane perpendicular to the axis of the light-exiting aperture, the smaller the distance between the reflected light path and the center of the light-exiting aperture, the clearer the image.
[0056] It should be noted that the reflecting surfaces of the reflector 500 are tilted relative to the second direction (CC) and the third direction (DD), respectively. The tilt angle of the reflector 500 is adjusted by the adjusting component 300, specifically, by adjusting the angle between the reflecting surfaces of the reflector 500 and the second direction (CC) and the third direction (DD), respectively. Preferably, the reflecting surfaces of the reflector 500 are set at a 45-degree angle to the second direction (CC) and the third direction (DD), respectively.
[0057] In one specific embodiment, such as Figure 5 As shown, the support member 400 includes a cylinder 410 and a ball end 420. The axis of the cylinder 410 is parallel to the second direction (CC). Figure 3 and Figure 6As shown, the ball end 420 is connected to the side of the cylinder 410 near the first light-transmitting hole 111. In this embodiment, a threaded hole 222 is provided through the second side 220 of the bracket 200 along the second direction (CC), and the end of the cylinder 410 away from the ball end 420 is threadedly engaged with the threaded hole 222 on the second side 220 of the bracket 200. Furthermore, a groove 411 is provided on the side of the cylinder 410 facing away from the ball end 420, allowing an external tool (e.g., a screwdriver) to be inserted into the groove 411 from the side of the threaded hole 222 facing away from the first light-transmitting hole 111, thereby turning the support member 400.
[0058] In one possible design, such as Figure 4 and Figure 6 As shown, the base 100 is provided with a mating groove 130, which has a groove edge 131 surrounding its opening. A portion of the structure of the ball end 420 extends into the mating groove 130 and contacts the groove edge 131. In this embodiment, when a portion of the structure of the ball end 420 extends into the mating groove 130, the groove edge 131 of the mating groove 130 surrounds the outer periphery of the ball end 420, which helps to increase the contact area between the ball end 420 and the base 100, thereby improving the stability of the ball end 420 supported on the base 100. Furthermore, the groove edge 131 can play a certain limiting role on the ball end 420, thereby limiting the ball end 420 to rotate within the opening of the mating groove 130. In this way, the fulcrum of the bracket 200 during its movement relative to the base 100 can be positioned more accurately.
[0059] In some embodiments, the mating groove 130 can be a circular groove, a square groove, or a groove structure of any other shape. For example, when the mating groove 130 is a square groove, the opening of the mating groove 130 is a square opening with four groove sides 131. Each groove side 131 contacts the ball end 420, so that there are four support points between the ball end 420 and the base 100, and the four support points surround the outer periphery of the ball end 420. This helps to improve the uniformity of force on the ball end 420, thereby improving the stability of the ball end 420 supported on the base 100.
[0060] In one possible design, the groove edge 131 forms a circular opening. The circular opening matches the shape of the ball end 420, allowing the groove edge 131 to fully contact the ball end 420, further increasing the contact area between the ball end 420 and the base 100, and further improving the stability of the ball end 420 supported on the base 100.
[0061] In one possible design, the groove edge 131 is provided with a chamfer or rounded corner, which helps to reduce stress concentration on the groove edge 131, reduce wear between the groove edge 131 and the ball end 420, and improve the smoothness of the rotation of the ball end 420 relative to the base 100.
[0062] In one possible design, such as Figure 1 and Figure 6 As shown, the optical path adjustment mechanism also includes an elastic limiting structure 700, which is mounted on the base 100. The base 100 has a support surface, and the ball end 420 is supported on the support surface. A limiting space 710 is formed between the elastic limiting structure 700 and the support surface. At least a portion of the structure of the second side 220 of the bracket 200 extends into the limiting space 710. The elastic limiting structure 700 applies a force close to the support surface to the bracket 200. This arrangement helps to improve the stability of the ball end 420 supported on the support surface. In addition, when the bracket 200 is driven to move along the second direction (CC) by twisting the support member 400, the elastic limiting structure 700 applies a force close to the support surface to the bracket 200. Therefore, the support member 400 on the second side 220 of the bracket 200 can be pressed against the support surface by the elastic limiting structure 700, thereby improving the stability of the ball end 420 supported on the support surface.
[0063] In this embodiment, the support surface is specifically located on the side of the first plate 110 facing the bracket 200, and the mating groove 130 is specifically formed on the support surface. In some embodiments, the threaded hole 222 on the second side 220 of the bracket 200 is specifically provided through the limiting block 221. Optionally, a clearance hole 720 is provided through the area of the elastic limiting structure 700 opposite to the limiting block 221, and the clearance hole 720 is used to avoid the support member 400. Specifically, the end of the cylinder 410 in the support member 400 away from the ball end 420 can extend into the clearance hole 720.
[0064] In one possible design, the elastic limiting structure 700 has the ability to elastically deform. Specifically, the elastic limiting structure 700 is made of an elastic material, such as rubber, plastic, or other elastic materials.
[0065] In another possible design, the elastic limiting structure 700 includes a movable member and an elastic connector, which connects the base 100 and the movable member respectively, forming a limiting space 710 between the movable member and the support surface. Optionally, the elastic connector can be a spring, a rubber component, or other elastic structure. The movable member is elastically connected to the base 100 via the elastic connector. In this embodiment, the elastic connector has a tendency to drive the movable member to move closer to the support surface, enabling the movable member to apply a force close to the support surface to the bracket 200, thereby improving the stability of the support member 400 supported on the support surface.
[0066] In one possible design, such as Figure 2 and Figure 6As shown, a limiting block 221 is provided on the second side 220 of the bracket 200. The limiting block 221 extends into the limiting space 710, and the elastic limiting structure 700 applies a force close to the supporting surface to the limiting block 221. Optionally, the edge of the limiting block 221 facing the elastic limiting structure 700 is rounded. By providing the rounded corner, when the bracket 200 moves relative to the base 100, the limiting block 221 also moves relative to the base 100, and during this process, the limiting block 221 also moves relative to the elastic limiting structure 700. By providing the rounded corner, the edge of the limiting block 221 facing the elastic limiting structure 700 is relatively smooth, which helps to improve the smoothness of the movement of the limiting block 221 relative to the elastic limiting structure 700.
[0067] In one possible design, the adjustment assembly 300 includes an elastic element 320 and a plurality of adjusting screws 310. The first side 210 of the bracket 200 has a plurality of through holes spaced apart along a fourth direction (EE), which forms an angle with the first direction (BB). Each through hole corresponds to one adjusting screw 310, and each adjusting screw 310 passes through its corresponding through hole and is threadedly connected to the base 100. The elastic element 320 is disposed between the first side 210 of the bracket 200 and the base 100, and the elastic element 320 has a tendency to drive the first side 210 of the bracket 200 away from the base 100. Optionally, the elastic element 320 can be a spring, a rubber component, or other elastic structure.
[0068] According to the above technical solution, by turning the adjusting screw 310, the distance between the first side 210 of the bracket 200 and the base 100 can be adjusted, so that the bracket 200 moves relative to the base 100 with the ball end 420 as the fulcrum, thereby adjusting the tilt angle of the reflector 500 on the bracket 200.
[0069] Optionally, the fourth direction (EE) can be set at various different angles to the first direction (BB). For example, the fourth direction (EE) can be set perpendicular to the first direction (BB). Furthermore, in this embodiment, the fourth direction (EE) is also set perpendicular to both the second direction (CC) and the third direction (DD).
[0070] In some embodiments, the number of elastic elements 320 may also be multiple, and the multiple elastic elements 320 are spaced apart along the fourth direction (EE). Optionally, the multiple elastic elements 320 are arranged in a one-to-one correspondence with the multiple adjusting screws 310. Optionally, each elastic element 320 surrounds the outer periphery of the corresponding adjusting screw 310, or each elastic element 320 is disposed next to the corresponding adjusting screw 310 and abuts against the first side 210 of the base 100 and the bracket 200 respectively.
[0071] Second Embodiment
[0072] This embodiment provides an optical device, including the optical path adjustment mechanism provided in any of the above embodiments. Since the optical device provided in this embodiment includes the optical path adjustment mechanism provided in any of the above embodiments, it possesses at least all of the aforementioned beneficial effects, which will not be elaborated further here.
[0073] Alternatively, the optical device can be an optical mechanism such as a camera, optical instrument, or optomechanical module, without being limited to a single type.
[0074] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An optical path adjustment mechanism, characterized in that, Includes a base, bracket, adjustment components, support members, and reflector, among which: The bracket has a first side and a second side spaced apart along a first direction, and the first side of the bracket is connected to the base via the adjustment assembly; The support member is installed on the second side of the bracket, and one end of the support member is set as a ball end. The second side of the bracket is supported on the base through the ball end. The reflector is mounted on the bracket; The adjustment component is used to allow the bracket to move relative to the base with the ball end as the fulcrum, so as to adjust the tilt angle of the reflector.
2. The optical path adjustment mechanism as described in claim 1, characterized in that, The base has a first light-transmitting hole on one side in the second direction and a second light-transmitting hole on the other side in the third direction, with the second direction being perpendicular to the third direction; the support member is threadedly connected to the bracket, and the support member is configured such that when the support member is screwed, the bracket can be driven to move relative to the base along the second direction.
3. The optical path adjustment mechanism as described in claim 1, characterized in that, The base is provided with a mating groove, the mating groove having a groove edge surrounding its own opening, and a portion of the structure at the ball end extends into the mating groove and contacts the groove edge.
4. The optical path adjustment mechanism as described in claim 3, characterized in that, The groove is surrounded to form a circular opening; and / or The groove edge is provided with a chamfer or rounded corner.
5. The optical path adjustment mechanism as described in claim 1, characterized in that, The optical path adjustment mechanism further includes an elastic limiting structure, which is installed on the base. The base has a support surface, and the ball end is supported on the support surface. A limiting space is formed between the elastic limiting structure and the support surface. At least a portion of the structure on the second side of the bracket extends into the limiting space. The elastic limiting structure applies a force to the bracket close to the support surface.
6. The optical path adjustment mechanism as described in claim 5, characterized in that, The elastic limiting structure has elastic deformation capability; or... The elastic limiting structure includes a movable component and an elastic connector. The elastic connector connects the base and the movable component respectively, and the limiting space is formed between the movable component and the supporting surface.
7. The optical path adjustment mechanism as described in claim 5, characterized in that, A limiting block is provided on the second side of the bracket. The limiting block extends into the limiting space, and the elastic limiting structure applies a force to the limiting block close to the supporting surface.
8. The optical path adjustment mechanism as described in claim 7, characterized in that, The edge of the limiting block facing the elastic limiting structure has rounded corners.
9. The optical path adjustment mechanism as described in any one of claims 1 to 8, characterized in that, The adjustment component includes: Multiple adjusting screws are provided. Multiple through holes are provided at intervals along the fourth direction on the first side of the bracket. The fourth direction is set at an angle to the first direction. The multiple through holes are provided one-to-one with the multiple adjusting screws. Each adjusting screw passes through the corresponding through hole and is threaded to the base. An elastic element is disposed between the first side of the bracket and the base, the elastic element having a tendency to drive the first side of the bracket away from the base.
10. An optical device, characterized in that, Includes the optical path adjustment mechanism as described in any one of claims 1 to 9.