Positioning and clamping mechanism for optical prism

Abstract

The utility model provides a positioning and clamping mechanism for an optical prism. The positioning and clamping mechanism for the optical prism comprises a connecting seat; the rotating angle adjusting platform is connected with the connecting base, and the rotating angle adjusting platform is rotatably arranged around the Z axis relative to the connecting base; the pitching angle adjusting platform is located on the side, away from the connecting base, of the rotation angle adjusting platform, and the pitching angle adjusting platform is connected with the rotation angle adjusting platform; and the clamping assembly is located on the side, away from the connecting base, of the pitching angle adjusting platform, and a clamping space is formed between the clamping assembly and the pitching angle adjusting platform. The positioning and clamping mechanism for the optical prism solves the problem that in the prior art, angle adjustment is difficult to achieve in a positioning and clamping mechanism for the optical prism.

Description

Technical Field

[0001] The utility model relates to the technical field of optical detection equipment, and more specifically, to a positioning and clamping mechanism for an optical prism. Background Art

[0002] An optical prism is a cubic structure, which can usually be integrated into precision optical instruments and has an important impact on the optical performance of the entire optical instrument. Therefore, during product R & D, production and other links, it is necessary to detect the performance of the optical prism. However, due to the small size of the optical prism, a special positioning and clamping mechanism is required to clamp the optical prism during the detection process. The existing positioning and clamping mechanisms for optical prisms are difficult to adjust the angle of the optical prism, so it is difficult to measure data in multiple aspects and difficult to ensure the accuracy of the test results.

[0003] That is to say, the existing positioning and clamping mechanisms for optical prisms in the prior art have the problem that it is difficult to achieve angle adjustment. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a positioning and clamping mechanism for an optical prism to solve the problem that the existing positioning and clamping mechanisms for optical prisms in the prior art are difficult to achieve angle adjustment.

[0005] To achieve the above purpose, the utility model provides a positioning and clamping mechanism for an optical prism, including: a connecting seat; a rotation angle adjustment platform, which is connected to the connecting seat and is rotatably arranged relative to the connecting seat around the Z-axis; a pitch angle adjustment platform, which is located on the side of the rotation angle adjustment platform away from the connecting seat and is connected to the rotation angle adjustment platform; a clamping component, which is located on the side of the pitch angle adjustment platform away from the connecting seat, and a clamping space is formed between the clamping component and the pitch angle adjustment platform.

[0006] Furthermore, a convex platform structure is provided on the surface of the side of the connecting seat facing the rotation angle adjustment platform, and the rotation angle adjustment platform has a groove structure matching the convex platform structure. The positioning and clamping mechanism further includes a limiting structure, and the limiting structure selectively abuts against the side wall of the convex platform structure through the rotation angle adjustment platform.

[0007] Furthermore, the rotation angle adjustment platform has a screw adjustment hole, which extends along the radial direction of the rotation angle adjustment platform, and both ends of the screw adjustment hole extend to the groove structure and the side wall surface of the rotation angle adjustment platform respectively. The limiting structure is a screw, and the screw selectively abuts against the side wall of the convex platform structure through the screw adjustment hole.

[0008] Furthermore, the positioning and clamping mechanism further includes a tension spring. The pitching angle adjustment platform and the rotating angle adjustment platform are connected by the tension spring. The pitching angle adjustment platform includes a body and a threaded knob. The threaded knob is supported between the body and the rotating angle adjustment platform, and the pitching angle of the body is adjusted by screwing the threaded knob.

[0009] Furthermore, the clamping assembly includes a guide post and a clamping block. The guide post is connected to the pitching angle adjustment platform and extends along the Z-axis direction. One end of the clamping block is slidably connected to the guide post, and a clamping space is formed between the other end of the clamping block and the pitching angle adjustment platform.

[0010] Furthermore, one end of the clamping block has a clamping portion, and the clamping portion is slidably connected to the guide post. The clamping assembly further includes a bolt for locking the clamping portion to the guide post.

[0011] Furthermore, the other end of the clamping block has a crimping portion, and the center point of the crimping portion is on the same straight line as the center point of the pitching angle adjustment platform.

[0012] Furthermore, at least one set of adjacent two structures among the connecting seat, the rotating angle adjustment platform, and the pitching angle adjustment platform have corresponding central threaded holes.

[0013] Furthermore, the convex platform structure has a first magnetic attraction portion, and the groove structure has a second magnetic attraction portion that cooperates with the first magnetic attraction portion.

[0014] Furthermore, the positioning and clamping mechanism further includes a connecting block. The connecting block is located on the side of the connecting seat away from the rotating angle adjustment platform, and the connecting block is perpendicularly connected to the connecting seat.

[0015] Applying the technical solution of the present utility model, the positioning and clamping mechanism for an optical prism includes a connecting seat, a rotating angle adjustment platform, a pitching angle adjustment platform, and a clamping assembly. The rotating angle adjustment platform is connected to the connecting seat and is rotatably arranged relative to the connecting seat around the Z-axis; the pitching angle adjustment platform is located on the side of the rotating angle adjustment platform away from the connecting seat, and the pitching angle adjustment platform is connected to the rotating angle adjustment platform; the clamping assembly is located on the side of the pitching angle adjustment platform away from the connecting seat, and a clamping space is formed between the clamping assembly and the pitching angle adjustment platform.

[0016] By setting up the connecting seat, the connecting seat provides an installation position for the rotation angle adjustment platform and the pitching angle adjustment platform, which is beneficial to the use stability of each platform. The rotation angle adjustment platform is rotatably connected to the connecting seat around the Z-axis, so that the rotation angle adjustment platform can rotate around the Z-axis relative to the connecting seat. Thus, the rotation angle of the optical prism in the clamping space around the Z-axis can be adjusted by adjusting the rotation angle adjustment platform. By setting up the pitching angle adjustment platform, the optical prism can be adjusted to different tilting angles with the pitching movement of the pitching angle adjustment platform. By setting up a clamping component on the pitching angle adjustment platform and forming a clamping space between the clamping component and the pitching angle adjustment platform, a setting position is reserved for the optical prism in the clamping space, and the clamping component and the pitching angle adjustment platform work together to achieve the positioning and clamping of the optical prism, which is beneficial to ensuring that the optical prism can be stably set on the pitching angle adjustment platform during the test. In addition, in this application, the rotation angle of the optical prism around the Z-axis can be adjusted through the rotation angle adjustment platform, and the pitching angle of the optical prism can be adjusted through the pitching angle adjustment platform, that is, the tilting angle of the optical prism relative to the X-axis or the Y-axis is adjusted, realizing multi-degree-of-freedom adjustment, with the advantages of simple structure, low cost, convenient operation, high clamping accuracy, and further ensuring the detection accuracy of the optical prism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The schematic diagrams in the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 The structural schematic diagram of the positioning and clamping mechanism for an optical prism showing an optional embodiment of the present utility model is shown;

[0019] Figure 2 It shows Figure 1 The sectional view of the connecting seat, the rotation angle adjustment platform and the pitching angle adjustment platform of the positioning and clamping mechanism in

[0020] Figure 3 It shows Figure 1 Another angle schematic diagram of the positioning and clamping mechanism for an optical prism in

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 10. Connecting seat; 101. Boss structure; 102. First magnetic attraction part; 103. Second magnetic attraction part; 20. Rotation angle adjustment platform; 201. Groove structure; 202. Screw adjustment hole; 30. Pitch angle adjustment platform; 301. Threaded knob; 401. Guide post; 402. Clamping block; 403. Crimping part; 50. Connecting block; 60. Limit structure; 71. First tension spring; 72. Second tension spring; 80. Central threaded hole; 90. Optical prism. Detailed implementation manner

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0024] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0025] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are generally in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravitational directions of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer relative to the contours of the respective components, but the above orientation terms do not limit the present utility model.

[0026] In order to solve the problem that it is difficult to achieve angle adjustment in the existing positioning and clamping mechanism for the optical prism 90, the present utility model provides a positioning and clamping mechanism for the optical prism 90.

[0027] As Figures 1 to 3 shown, the positioning and clamping mechanism for the optical prism 90 includes a connecting seat 10, a rotation angle adjustment platform 20, a pitch angle adjustment platform 30 and a clamping assembly. The rotation angle adjustment platform 20 is connected to the connecting seat 10, and the rotation angle adjustment platform 20 is rotatably arranged relative to the connecting seat 10 around the Z axis; the pitch angle adjustment platform 30 is located on the side of the rotation angle adjustment platform 20 away from the connecting seat 10, and the pitch angle adjustment platform 30 is connected to the rotation angle adjustment platform 20; the clamping assembly is located on the side of the pitch angle adjustment platform 30 away from the connecting seat 10, and a clamping space is formed between the clamping assembly and the pitch angle adjustment platform 30.

[0028] By setting the connecting seat 10, the connecting seat 10 provides an installation position for the rotation angle adjustment platform 20 and the pitch angle adjustment platform 30, which is beneficial to the use stability of each platform. The rotation angle adjustment platform 20 is rotatably connected to the connecting seat 10 around the Z-axis, so that the rotation angle adjustment platform 20 can rotate around the Z-axis relative to the connecting seat 10. Thus, the rotation angle of the optical prism 90 around the Z-axis in the clamping space can be adjusted by adjusting the rotation angle adjustment platform 20. By setting the pitch angle adjustment platform 30, the optical prism 90 can be adjusted to different tilt angles with the pitch movement of the pitch angle adjustment platform 30. By setting a clamping component on the pitch angle adjustment platform 30 and forming a clamping space between the clamping component and the pitch angle adjustment platform 30, a setting position is left for the optical prism 90 in the clamping space, and the clamping component and the pitch angle adjustment platform 30 cooperate to realize the positioning and clamping of the optical prism 90, which is beneficial to ensuring that the optical prism 90 can be stably set on the pitch angle adjustment platform 30 during the test. In addition, in this application, the rotation angle of the optical prism 90 around the Z-axis can be adjusted through the rotation angle adjustment platform 20, and the pitch angle of the optical prism 90 can be adjusted through the pitch angle adjustment platform 30, that is, the tilt angle of the optical prism 90 relative to the X-axis or the Y-axis can be adjusted, realizing multi-degree-of-freedom adjustment, with convenient operation, the advantages of simple structure and low cost, and high clamping accuracy can be ensured, thereby ensuring the detection accuracy of the optical prism 90.

[0029] It should be noted that the connecting seat 10 is parallel to the XY plane formed by the X-axis and the Y-axis. Therefore, it can be understood that the rotation angle of the rotation angle adjustment platform 20 relative to the connecting seat 10 around the Z-axis is adjustable, the pitch angle of the pitch angle adjustment platform 30 relative to the connecting seat 10 is adjustable, and the clamping component moves with the movement of the pitch angle adjustment platform 30. Such a setting is beneficial to compressing the overall size of the positioning and clamping mechanism of this application, making the positioning and clamping mechanism of this application more suitable for clamping small-sized optical prisms 90.

[0030] It should also be noted that the above-mentioned optical prism 90 is actually a polarization beam splitter prism, and the polarization beam splitter prism is a cube structure. The polarization beam splitter prism is composed of a beam splitting film and two right-angle prisms. The inclined surfaces of the two right-angle prisms are glued, and the beam splitting film is arranged at the gluing position.

[0031] Such as Figure 2As shown, one side surface of the connecting seat 10 facing the rotation angle adjustment platform 20 has a boss structure 101, and the rotation angle adjustment platform 20 has a groove structure 201 that cooperates with the boss structure 101. The positioning and clamping mechanism further includes a limiting structure 60, and the limiting structure 60 selectively abuts against the side wall of the boss structure 101 through the rotation angle adjustment platform 20. It should be noted here that the boss structure 101 is annular and the boss structure 101 is located in the central area of the connecting seat 10. The center point of the boss structure 101 and the center point of the rotation angle adjustment platform 20 are on the same straight line. The groove structure 201 is located on one side surface of the rotation angle adjustment platform 20 facing the connecting seat 10. The boss structure 101 is received in the groove structure 201, and the top surface of the boss structure 101 contacts the bottom surface of the groove of the groove structure 201.

[0032] By setting the boss structure 101 to be annular, the rotation of the rotation angle adjustment platform 20 around the Z axis will not be affected by the interference of the boss structure 101, which is beneficial to ensuring the continuity and smoothness of the rotation action. By setting the limiting structure 60 to selectively abut against the side wall of the boss structure 101 through the rotation angle adjustment platform 20, when the rotation angle adjustment platform 20 rotates to a suitable position, the limiting structure 60 can abut against the side wall of the boss structure 101 through the rotation angle adjustment platform 20, thereby restricting the movement of the rotation angle adjustment platform 20.

[0033] As Figure 2 shown, the rotation angle adjustment platform 20 has a screw adjustment hole 202. The screw adjustment hole 202 extends along the radial direction of the rotation angle adjustment platform 20, and both ends of the screw adjustment hole 202 extend to the groove structure 201 and the side wall surface of the rotation angle adjustment platform 20 respectively. That is to say, the screw adjustment hole 202 communicates with the groove structure 201 and the external space of the rotation angle adjustment platform 20. The limiting structure 60 is a screw, and the screw selectively abuts against the side wall of the boss structure 101 through the screw adjustment hole 202. During the test, by adjusting the rotation angle adjustment platform 20, the optical prism 90 rotates around the z axis. When it rotates to the required position, the screw can be screwed so that the screw is screwed into the screw adjustment hole 202 until it abuts against the side wall of the boss structure 101, thereby restricting the rotation of the rotation angle adjustment platform 20 and realizing positioning.

[0034] As Figure 2As shown, in a specific embodiment of the present application, the boss structure 101 and the groove structure 201 are magnetically connected. Specifically, the boss structure 101 has a first magnetic portion 102, and the groove structure 201 has a second magnetic portion 103 that cooperates with the first magnetic portion 102. The first magnetic portion 102 is a magnet and is embedded in the top surface of the boss structure 101. The first magnetic portion 102 is annular, and the second magnetic portion 103 includes a plurality of magnets arranged at intervals, and the plurality of magnets arranged at intervals are arranged at the bottom of the groove of the groove structure 201. This arrangement is conducive to increasing the connection stability between the rotation angle adjustment platform 20 and the connecting seat 10, and is conducive to preventing the rotation angle adjustment platform 20 from being separated from the connecting seat 10 during the rotation process.

[0035] Specifically, the positioning clamping mechanism also includes a tension spring, and the pitch angle adjustment platform 30 is connected to the rotation angle adjustment platform 20 through the tension spring. The pitch angle adjustment platform 30 includes a body and a threaded knob 301, and the threaded knob 301 is supported between the body and the rotation angle adjustment platform 20. The pitch angle of the body is adjusted by screwing the threaded knob 301. In the present application, the tension spring includes a first tension spring 71 and a second tension spring 72, and the first tension spring 71 and the second tension spring 72 are symmetrically arranged along the center line of the pitch angle adjustment platform 30 on the X plane, and the first tension spring 71 and the second tension spring 72 are not located on the center line of the pitch angle adjustment platform 30. Specifically, the two tension springs are composed of a spring and two rod structures, and the two ends of the spring are respectively connected to the two rod structures. The two rod structures are respectively arranged on the pitch angle adjustment platform 30 and the rotation angle adjustment platform 20, so that when the pitch angle of the main body is adjusted by screwing the threaded knob 301, the stability of the main body and the reliability of the active connection between the pitch angle adjustment platform 30 and the rotation angle adjustment platform 20 can be well guaranteed through the spring.

[0036] refer to Figure 2 As shown in , specifically, a groove is provided on the side wall of the main body of the pitch angle adjustment platform 30, and the groove is connected to the side surface of the pitch angle adjustment platform 30 facing the rotation angle adjustment platform 20, so that the groove leaves a setting space for the threaded knob 301, one end of the threaded knob 301 is rotatably connected to the rotation angle adjustment platform 20, and the other end of the threaded knob 301 abuts against the groove, and the knob itself can be tilted in different directions by turning the knob in different directions, thereby changing the force exerted by the threaded knob 301 on the pitch angle adjustment platform 30, so that the pitch angle adjustment platform 30 tilts with the tilt of the threaded knob 301, thereby realizing the adjustment of the pitch angle of the optical prism 90.

[0037] Optionally, the positioning and clamping mechanism further includes a plurality of steel balls. The plurality of steel balls are spaced apart and supported between the pitch angle adjustment platform 30 and the rotation angle adjustment platform 20. The plurality of steel balls are located on the diameter line of the pitch angle adjustment platform 30 and are distributed in an isosceles triangle with the threaded knob 301. Such a setting is beneficial to ensure the assembly stability of the rotation angle adjustment platform 20 and the pitch angle adjustment platform 30 during pitch adjustment, avoid the situation of the two separating or mechanism interference during the angle adjustment process, and is beneficial to the control of the adjustment accuracy.

[0038] As Figure 3 shown, the clamping assembly includes a guide post 401 and a clamping block 402. The guide post 401 is connected to the pitch angle adjustment platform 30. The guide post 401 extends along the Z-axis direction. One end of the clamping block 402 is slidably connected to the guide post 401, and a clamping space is formed between the other end of the clamping block 402 and the pitch angle adjustment platform 30. By setting the guide post 401 to be connected to the pitch angle adjustment platform 30, the clamping assembly can be fixed on the pitch angle adjustment platform 30. By setting one end of the clamping block 402 to be slidably connected to the guide post 401, the switching between clamping the optical prism 90 and not clamping the optical prism 90 can be realized by adjusting the sliding position of the clamping block 402 on the guide post 401. And the sliding of the clamping block 402 can be adjusted to meet the clamping requirements of prisms of different sizes, so that the positioning and clamping mechanism of the present application is not limited by the size of the optical prism 90, and the positioning and clamping mechanism of the present application has the characteristics of strong versatility and high flexibility.

[0039] Specifically, one end of the clamping block 402 has a clamping portion. The clamping portion is slidably connected to the guide post 401. The clamping assembly further includes a bolt for locking the clamping portion to the guide post 401. In the present application, the end of the clamping portion is open and consists of two clamping plates. The two clamping plates are spaced apart. The guide post 401 is located between the two clamping plates. The bolt passes through the two clamping plates in sequence and the bolt is located on the side of the guide post 401 away from the crimping portion 403. Such a setting enables the two clamping plates to clamp the guide post 401 by screwing the bolt when the clamping block 402 slides to the required position, so as to realize the limit of the clamping block 402. Thus, when it is necessary to replace or disassemble the optical prism 90, the sliding between the clamping portion of the bolt and the guide post 401 can be loosened, which is convenient to operate. In addition, the slidable connection between the clamping portion and the guide post 401 and the locking by the bolt can also avoid the risk of the clamping block 402 separating from the guide post 401.

[0040] As Figure 3As shown, the other end of the clamping block 402 has a crimping portion 403. The crimping portion 403 is used to crimp the surface of the optical prism 90. The center point of the crimping portion 403 and the center point of the pitch angle adjustment platform 30 are on the same straight line. Such a setting is beneficial for the crimping portion 403 to limit the optical prism 90 at the central position of the pitch angle adjustment platform 30, facilitating subsequent optical performance testing, and at the same time facilitating the precise adjustment of the angle of the optical prism 90, ensuring the stability of the crimping portion 403 crimping the optical prism 90.

[0041] Specifically, at least one set of adjacent two structures among the connecting seat 10, the rotation angle adjustment platform 20, and the pitch angle adjustment platform 30 have corresponding central threaded holes 80. As Figure 2 shown, in a specific embodiment of the present application, the connecting seat 10, the rotation angle adjustment platform 20, and the pitch angle adjustment platform 30 all have corresponding central threaded holes 80. And the diameter of the central threaded hole 80 in the boss structure 101 of the connecting seat 10 is greater than the diameter of the central threaded hole 80 in the part at the bottom of the boss structure 101. Such a setting can realize the connection of any two adjacent structures according to requirements.

[0042] It should be noted that the outer shapes of the connecting seat 10, the rotation angle adjustment platform 20, and the pitch angle adjustment platform 30 are all circular, and the central axes of the three in the Z-axis direction are on a straight line. And during the test, the optical prism 90 is also located on this central axis. Such a setting is beneficial for ensuring the integration and structural stability of the positioning and clamping mechanism, further ensuring the accuracy of the angle adjustment of the optical prism 90, and thus ensuring the test accuracy.

[0043] As Figure 1 and Figure 3 shown, the positioning and clamping mechanism further includes a connecting block 50. The connecting block 50 is located on the side of the connecting seat 10 away from the rotation angle adjustment platform 20, and the connecting block 50 is perpendicularly connected to the connecting seat 10. Specifically, the connecting seat 10 and the connecting block 50 are fixedly connected by screws. The connecting block 50 is used to connect with other optical test equipment, so that the positioning and clamping mechanism can be clamped on the stage of the optical test equipment, facilitating cooperation with the optical test equipment. In a specific embodiment of the present application, the connecting block 50 of the positioning and clamping mechanism is clamped on the stage of the spectrophotometer. The threaded hole of the connecting seat 10 is located at its center position, that is, the threaded hole of the connecting seat 10 is the above-mentioned central screw hole.

[0044] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", 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 should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning and clamping mechanism for an optical prism, characterized in that: include: Connecting seat (10); A rotation angle adjustment platform (20), the rotation angle adjustment platform (20) being connected to the connection seat (10), and the rotation angle adjustment platform (20) being rotatably arranged around a Z axis relative to the connection seat (10); A pitch angle adjustment platform (30), the pitch angle adjustment platform (30) being located on a side of the rotation angle adjustment platform (20) away from the connection seat (10), and the pitch angle adjustment platform (30) being connected to the rotation angle adjustment platform (20); A clamping assembly is located on a side of the pitch angle adjustment platform (30) away from the connecting seat (10), and a clamping space is formed between the clamping assembly and the pitch angle adjustment platform (30).

2. The positioning and clamping mechanism for an optical prism according to claim 1, characterized in that: The connection seat (10) has a boss structure (101) on one side surface facing the rotation angle adjustment platform (20), and the rotation angle adjustment platform (20) has a groove structure (201) that cooperates with the boss structure (101). The positioning clamping mechanism also includes a limiting structure (60), and the limiting structure (60) selectively abuts against the side wall of the boss structure (101) through the rotation angle adjustment platform (20).

3. The positioning and clamping mechanism for an optical prism according to claim 2, characterized in that: The rotation angle adjustment platform (20) has a screw adjustment hole (202), the screw adjustment hole (202) extends along the radial direction of the rotation angle adjustment platform (20), and the two ends of the screw adjustment hole (202) extend to the groove structure (201) and the side wall surface of the rotation angle adjustment platform (20), respectively, and the limiting structure (60) is a screw, and the screw selectively abuts against the side wall of the boss structure (101) through the screw adjustment hole (202).

4. The positioning and clamping mechanism for an optical prism according to claim 1, characterized in that: The positioning clamping mechanism also includes a tension spring, and the pitch angle adjustment platform (30) is connected to the rotation angle adjustment platform (20) via the tension spring. The pitch angle adjustment platform (30) includes a body and a threaded knob (301), and the threaded knob (301) is supported between the body and the rotation angle adjustment platform (20). The pitch angle of the body can be adjusted by screwing the threaded knob (301).

5. The positioning and clamping mechanism for an optical prism according to claim 1, characterized in that: The clamping assembly comprises a guide column (401) and a clamping block (402); the guide column (401) is connected to the pitch angle adjustment platform (30); the guide column (401) extends along the direction of the Z axis; one end of the clamping block (402) is slidably connected to the guide column (401); and the clamping space is formed between the other end of the clamping block (402) and the pitch angle adjustment platform (30).

6. The positioning and clamping mechanism for an optical prism according to claim 5, characterized in that: One end of the clamping block (402) has a clamping portion, and the clamping portion is slidably connected to the guide column (401). The clamping assembly also includes a bolt, and the bolt is used to lock the clamping portion and the guide column (401).

7. The positioning and clamping mechanism for an optical prism according to claim 5, characterized in that: The other end of the clamping block (402) has a crimping portion (403), and the center point of the crimping portion (403) and the center point of the pitch angle adjustment platform (30) are on the same straight line.

8. The positioning and clamping mechanism for an optical prism according to claim 1, characterized in that: At least one group of two adjacent structures among the connection seat (10), the rotation angle adjustment platform (20) and the pitch angle adjustment platform (30) have central threaded holes (80) corresponding to each other.

9. The positioning and clamping mechanism for an optical prism according to claim 2, characterized in that: The boss structure (101) has a first magnetic attraction portion (102), and the groove structure (201) has a second magnetic attraction portion (103) that cooperates with the first magnetic attraction portion (102).

10. The positioning and clamping mechanism for an optical prism according to any one of claims 1 to 8, characterized in that: The positioning clamping mechanism further comprises a connecting block (50), wherein the connecting block (50) is located on a side of the connecting seat (10) away from the rotation angle adjustment platform (20), and the connecting block (50) is vertically connected to the connecting seat (10).

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