Angle adjusting device for optical test

Abstract

According to the angle adjusting device for the optical test, the size of the angle adjusting device is reduced, and the durability of the angle adjusting device is improved. The angle adjusting device for the optical test comprises a fixed part and a rotating part which are rotationally connected, wherein the rotating part can rotate around a reference axis relative to the fixed part; the angle adjusting device for the optical test further comprises an elastic locking piece arranged on the fixing part, the elastic locking piece comprises a spring body and a lock head abutting against the spring body, and the lock head can roll relative to the spring body. The rotating part is provided with a first surface which abuts against the lock head in the deformation direction of the spring body. The rotating part is further provided with clamping grooves, the clamping grooves are formed by recessing the first surface, the clamping grooves are evenly distributed around the reference axis, and the lock head can be connected with any clamping groove in a clamped mode under the action of elastic force so as to form a stop in the circumferential direction of the reference axis.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical testing technical field, specifically, relate to a kind of angle adjusting device for optical testing. BACKGROUND

[0002] In optical testing and debugging process, some specific angles are often needed, for example, the incidence angle of optics or the receiving angle of imaging surface. The existing angle adjusting device uses motor rotation to realize electric adjustment, and there are also manual adjusting devices composed of worm gears and worms or gears. Using motor-driven angle adjusting device has limitations in use conditions, and the motor is large in size, low in space utilization, and high in cost. Moreover, the manual adjusting device composed of worm gears and worms or gears has high requirements for part machining precision, is large in size, and needs regular maintenance and lubrication when parts are used together. SUMMARY

[0003] The utility model aims at providing an angle adjusting device for optical testing, which improves the structure of the angle adjusting device. On the one hand, it overcomes the disadvantages of large motor size and low space utilization of electric drive mode. On the other hand, it overcomes the disadvantages of high machining precision and large size of worm gear or gear transmission manual adjustment mode. The size of the angle adjusting device is reduced, and the durability of the angle adjusting device is improved.

[0004] To achieve the above-mentioned purpose, the utility model provides an angle adjusting device for optical testing, which comprises a fixed part and a rotating part connected by rotation. The rotating part can rotate relative to the fixed part around a reference axis.

[0005] The angle adjusting device for optical testing further comprises an elastic locking member provided on the fixed part. The elastic locking member comprises a spring body and a lock head abutting against the spring body. The lock head can roll relative to the spring body. The rotating part has a first surface, which abuts against the lock head in the deformation direction of the spring body.

[0006] The rotating part is further provided with a clamping groove, which is recessed from the first surface to form a clamping groove. The clamping groove is evenly distributed around the reference axis. Under the action of the elastic force, the lock head can be clamped with any clamping groove to form a stopper in the circumferential direction of the reference axis.

[0007] In the embodiment, the fixed part and the rotating part are locked in the circumferential direction by the elastic locking member. The interval between the clamping grooves distributed along the reference axis is set to limit the angle of rotation of the rotating part relative to the fixed part. The locking head and the first surface are arranged to abut in the elastic deformation direction, so that the first surface and the locking head can form rolling friction during rotation of the rotating part, allowing the elastic locking member to allow the rotating part to rotate freely relative to the fixed part until the rotating part is rotated to a set angle, and then the locking head is clamped with the clamping groove to form a circumferential stop. Thus, the size of the angle adjusting device is reduced, and the durability of the angle adjusting device is improved.

[0008] Optionally, the fixed part has a mounting channel and a second surface arranged opposite to the first surface, the mounting channel is used to accommodate the elastic locking member, and an opening is formed on the second surface; part of the locking head extends to the outside of the opening, and the opening forms a stop for the locking head in the extension direction of the mounting channel.

[0009] The first surface and the second surface can be opposite in the extension direction of the reference axis, or can be opposite in a direction perpendicular to the reference axis; the mounting channel and the spring body extend in the same direction of the deformation direction of the spring body to mount the spring body, one end of the spring body abuts against the mounting channel, and the other end is connected with the locking head, which is pressed to one side of the opening by the elastic action of the spring body; at the same time, part of the locking head extends to the outside of the mounting channel through the opening and is higher than the second surface. Thus, the opening can limit the elastic locking member in the mounting channel.

[0010] Optionally, the spring body deforms in a direction parallel to the reference axis. Thus, the spring body can form a circumferential stop for the rotating part in the circumferential direction of the rotation axis.

[0011] Optionally, the spring body deforms in a direction perpendicular to the reference axis. Thus, the spring body can form a circumferential stop for the rotating part in the circumferential direction of the rotation axis.

[0012] Optionally, the rotating part is provided with a rotating shaft, and the rotating shaft is arranged perpendicular to the rotating part; the fixed part is provided with a socket matched with the rotating shaft, the rotating shaft is inserted into the socket and can rotate relative to the socket; the rotating shaft and the socket are arranged concentrically with the reference axis; the rotating shaft is further matched with a connecting member, and the connecting member is used to lock the rotating part and the fixed part in the extension direction of the reference axis.

[0013] By matching the rotating shaft with the socket, the rotating part can rotate relative to the fixed part; and by matching the connecting member with the rotating shaft, the rotating part and the fixed part are locked in the extension direction of the reference axis.

[0014] Optionally, the inner wall of the insertion hole is provided with a first protruding ring and a second protruding ring arranged at an axial interval, a space for accommodating the bearing is formed between the first protruding ring and the second protruding ring, and the rotating shaft is matched with the bearing.

[0015] Optionally, the insertion hole penetrates the second surface to form a first opening, the second protruding ring is closer to the first opening than the first protruding ring, and the rotating shaft is provided with a matching boss which is in clearance fit with the inner ring side of the second protruding ring.

[0016] Thus, the radial direction of the rotating shaft inserted into the insertion hole is limited, the accuracy of the rotating shaft inserted into the insertion hole is ensured, and when the rotating part rotates relative to the fixed part, the rotating part can be prevented from being dislocated in the radial direction of the insertion hole.

[0017] Optionally, a part of the rotating shaft penetrates the bearing to a side of the bearing away from the second surface, and the part of the rotating shaft penetrating the bearing is provided with a connecting piece which is in threaded connection with the bearing and is in axial stop with the bearing.

[0018] The connecting piece and the rotating shaft are in threaded connection, so that the connecting manner of the connecting piece and the rotating shaft is facilitated.

[0019] Optionally, a third surface opposite to the second surface in the axial direction of the fixed part is defined, the insertion hole penetrates the third surface to form a second opening, and the second opening is used for inserting the connecting piece. The second opening can provide necessary space for manual operation of the connecting piece.

[0020] Optionally, the number of the clamping grooves is even. Thus, the uniformity of the angle adjustment in the circumferential direction is ensured, and the stress of the rotating part is uniform.

[0021] Optionally, the lock head is a sphere, the clamping groove is a hemispherical structure, and the hemispherical structure is matched with the arc of the sphere. The sphere structure has higher structural strength, and is convenient for processing, so that the processing difficulty and cost are reduced.

[0022] Other features of the present specification and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments of the present specification and, together with the description, serve to explain the principles of the present specification.

[0024] Figure 1is the angle adjusting device structure schematic view for optical testing in the embodiment of the utility model;

[0025] Figure 2 is Figure 1 the shaft side view of partial structure of

[0026] Figure 3 is Figure 1 the partial structure explosion schematic view of

[0027] Figure 4 is Figure 1 the side sectional view, show spring body deformation state;

[0028] Figure 5 is Figure 1 the side sectional view, show the locking head and the clamping state of the clamping groove.

[0029] Reference signs:

[0030] 1 - support base;11 - third surface;12 - second surface;13 - installation channel;131 - opening;14 - jack;141 - first mouth;142 - second mouth;143 - first convex ring;144 - second convex ring;2 - rotary disc;21 - support rod;22 - disc body;23 - first surface;24 - pivot;25 - boss;26 - clamping groove;3 - optical module;4 - elastic locking part;41 - spring body;42 - locking head;5 - bearing;6 - connecting piece;S1 - reference axis. DETAILED DESCRIPTION

[0031] The utility model provides a kind of angle adjusting device for optical testing, by improving the structure of angle adjusting device, on the one hand, the disadvantages of motor volume larger, space utilization low of electric drive mode can be overcome;On the other hand, the disadvantages of high machining precision requirement, large size of worm gear or gear transmission manual adjustment mode can be overcome;The size of angle adjusting device is reduced, and the durability of angle adjusting device is improved.

[0032] The existing angle adjusting device adopts motor rotation to realize electric adjustment, and there is also a manual adjusting device composed of a worm gear and a worm or a gear. The use of a motor drive to adjust the angle device has limitations in use conditions and the motor has a large volume, low space utilization rate and high cost. Specifically, the electric drive device usually includes a motor, a speed reducer, a controller and other components, and the volume of these components is large, resulting in a high space occupancy rate of the entire angle adjusting device. On an optical platform, space resources are very valuable, and the large volume of the electric drive device may limit the arrangement of other optical elements and reduce the overall performance of the optical system. In addition, the electric drive device usually relies on stable power supply and has certain requirements for the temperature and humidity of the environment. In outdoor testing or unstable power supply environment, the electric drive device may not work normally. In addition, the electric drive device is also affected by electromagnetic interference, which may cause a decrease in adjustment accuracy or failure.

[0033] The manual adjusting device composed of a worm gear and a worm or a gear has high requirements for the machining precision of parts, a large volume, wear during use of parts, and the need for regular maintenance and lubrication. Specifically, the manual adjusting device composed of a worm gear and a worm or a gear usually includes multiple transmission components such as a worm, a worm gear, a gear and the like. The volume of these components is large, resulting in a large volume of the entire adjusting device. In an optical system, a large volume of the adjusting device may block light or interfere with the arrangement of other optical elements. The adjusting device composed of a worm gear and a worm or a gear has high requirements for the machining precision of parts. Due to friction and wear between transmission components, if the machining precision is insufficient, problems such as unstable transmission, decreased adjustment accuracy or part damage may occur. In addition, high-precision machining also increases manufacturing cost and time.

[0034] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The relational terms such as "first" and "second" are only used to distinguish one component from another component with the same name, and do not necessarily require or imply any actual relationship or order between the components.

[0036] Please refer to Figures 1 to 5 , Figure 1 is a structural schematic diagram of an angle adjusting device for optical testing in the embodiment of the present application; Figure 2 is an axial side view of part of the structure of Figure 1 ; Figure 3 is an exploded schematic view of part of the structure of Figure 1 ; Figure 4 is a side sectional view of Figure 1 , showing the deformed state of the spring body 41; Figure 5 isFigure 1 The side sectional view shows the locking state of the lock head 42 and the slot 26.

[0037] To avoid at least one of the above-mentioned drawbacks, this utility model provides an angle adjustment device for optical testing. The angle adjustment device for optical testing includes a support base 1 and a rotating disk 2. The support base 1 serves as a fixed part, and the rotating disk 2 serves as a rotating part. The rotating disk 2 is used to support an optical module 3. The optical module 3 is used to emit light outward. The light extends along a direction perpendicular to the reference axis s1 described below. The definition of the reference axis s1 is explained in the following content.

[0038] During the angle adjustment process, the test angle of the optical module 3 is adjusted by driving the rotating disk 2 relative to the support base 1. It is understood that the rotating part rotates relative to the support base 1, and in the specific operation, the method of driving the rotating disk 2 or the support base 1 to drive the rotation falls within the protection scope of this application.

[0039] As shown in the figure, in this embodiment, the rotating disk 2 is used to support the optical module 3. Specifically, the rotating disk 2 includes a support rod 21 for supporting the optical module 3 and a disk body 22. The support rod 21 is arranged perpendicular to the disk body 22 and is located on the side of the disk body 22 away from the support base 1. The disk body 22 has a cylindrical structure, and the part of the support base 1 that is adapted to the disk body 22 is also a cylindrical structure. The disk body 22 and the support base 1 are concentrically arranged. In this embodiment, the rotating disk 2 can rotate relative to the support base 1 around the reference axis s1; the reference axis s1 coincides with the central axis of the support base 1 along the disk body 22. In this application, the reference axis s1 can also extend in a vertical direction, or in a horizontal direction, or in a direction at a certain angle relative to the vertical or horizontal direction; no specific limitation is made here.

[0040] The angle adjustment device for optical testing also includes an elastic locking member 4 disposed on the support base 1. The elastic locking member 4 allows the disk body 22 to rotate circumferentially relative to the support base 1, and after rotating to a set angle, it can also lock the support base 1 and the disk body 22 circumferentially.

[0041] The resilient locking member 4 includes a spring body 41 and a locking head 42 that abuts against the spring body 41. The locking head 42 is capable of rolling relative to the spring body 41. The disc body 22 has a first surface 23 that abuts against the locking head 42 in the deformation direction of the spring body 41.

[0042] The disc body 22 is further provided with clamping grooves 26 which are recessed from the first surface 23, and the locking head 42 can be clamped with any of the clamping grooves 26 to form a stop in the circumferential direction of the reference axis s1. The clamping grooves 26 are uniformly distributed around the reference axis s1, and can be spaced in the circumferential direction or continuously distributed. In the case of continuous distribution of the clamping grooves 26 in the circumferential direction, the centers of two adjacent clamping grooves 26 are spaced in the circumferential direction. Meanwhile, it is necessary to ensure that the locking head 42 can be clamped in any of the clamping grooves 26. Those skilled in the art can choose the structure and shape of the locking head 42 and the clamping groove 26 according to the needs.

[0043] In addition, the number of clamping grooves 26 is even. In this way, the uniformity of the angle adjustment in the circumferential direction can be ensured. Of course, the number of clamping grooves 26 can also be odd, as long as the clamping grooves 26 are uniformly distributed in the circumferential direction.

[0044] The specific structure of the locking head 42 and the clamping groove 26 will be described below in two specific ways. As one way, the locking head 42 is a sphere, and the clamping groove 26 is a hemispherical structure which is adapted to the curvature of the sphere. The spherical structure has stronger structural strength, and is easy to process, thereby reducing the processing difficulty and cost. In the present embodiment, the surface area of the clamping groove 26 covering the sphere-shaped locking head 42 is less than 1 / 2 of the total area of the sphere.

[0045] As another way, the locking head 42 is a spindle-shaped structure which can form a lock relative to the spring body 41 around the axis direction thereof, and the clamping groove 26 is an arc-shaped groove which can be clamped with the middle large-diameter region of the spindle-shaped structure to form a stop in the circumferential direction of the support base 1 and the disc body.

[0046] In the present embodiment, the support base 1 and the rotating disc 2 are locked in the circumferential direction by the elastic locking member 4. By setting the spacing between the clamping grooves 26 which are uniformly distributed in the circumferential direction of the reference axis s1, the angle of rotation of the rotating disc 2 relative to the support base 1 can be limited. Meanwhile, by the way that the locking head 42 and the first surface 23 abut in the elastic deformation direction, the first surface 23 and the locking head 42 can form a rolling friction during the rotation of the rotating disc 2, so that the elastic locking member 4 can allow the rotating disc 2 to rotate freely relative to the support base 1, and after the rotating disc 2 is rotated to a set angle, the locking head 42 is clamped with the clamping groove 26 to form a stop in the circumferential direction. In this way, the size of the angle adjustment device is reduced, and the durability of the angle adjustment device is improved.

[0047] In the above-mentioned embodiments, the support base 1 has a mounting channel 13 for accommodating the elastic locking member 4 and a second surface 12 opposite the first surface 23, and an opening 131 is formed in the second surface 12; part of the lock head 42 extends to the outside of the opening 131, and the opening 131 forms a stop for the lock head 42 in the extension direction of the mounting channel 13.

[0048] The first surface 23 and the second surface 12 can be opposite along the extension direction of the reference axis s1, or can be opposite in a direction perpendicular to the reference axis s1; the mounting channel 13 and the deformation direction of the spring body 41 extend in the same direction to mount the spring body 41, one end of the spring body 41 abuts the mounting channel 13, and the other end is connected with the lock head 42, which is pressed to one side of the opening 131 under the elastic action of the spring body 41; at the same time, part of the lock head 42 extends to the outside of the mounting channel 13 from the opening 131 and is higher than the second surface 12. Thus, the opening 131 can limit the elastic locking member 4 within the mounting channel 13.

[0049] In the embodiments of the present application, the support base and the disc body 22 form a lock in the extension direction of the reference axis s1, and as a specific embodiment, the disc body 22 is provided with a rotating shaft 24, which is perpendicular to the disc body 22 and located on the surface of the disc body 22 away from the support rod 21 and extends in the opposite direction of the support rod 21.

[0050] The support base 1 is provided with a socket 14 matched with the rotating shaft 24, and the rotating shaft 24 is inserted into the socket 14 and can rotate relative to the socket 14. The rotating shaft 24 can be frictionally matched with the inner hole wall of the socket 14, or a bearing 5 can be provided to form a rotatable matching with the socket 14.

[0051] The rotating shaft 24 and the socket 14 are concentrically arranged with the reference axis s1; the rotating shaft 24 is also matched with a connecting piece 6, which is used to lock the disc body 22 and the support base 1 in the extension direction of the reference axis s1.

[0052] By matching the rotating shaft 24 with the socket 14, the disc body 22 can rotate relative to the support base 1; and by matching the connecting piece 6 with the rotating shaft 24, the disc body 22 and the support base 1 can be stopped in the extension direction of the reference axis s1.

[0053] As a specific embodiment, the plug rod is matched with the insertion hole 14 through the bearing 5. The bearing 5 has an inner ring and an outer ring, and the inner ring can rotate relative to the outer ring. The inner wall of the insertion hole 14 is provided with a first protruding ring 143 and a second protruding ring 144 which are arranged axially. The bearing 5 is accommodated between the first protruding ring 143 and the second protruding ring 144, and the rotating shaft 24 is matched with the bearing 5. The first protruding ring 143 and the second protruding ring 144 can surround a space for accommodating the bearing 5. As an implementation, the first protruding ring 143 and the second protruding ring 144 can be limit ring parts welded on the inner wall of the insertion hole 14, or a first ring groove can be formed on the inner hole wall of the insertion hole 14, and the first ring groove is recessed radially outward from the inner hole wall of the insertion hole 14, and the groove side wall of the first ring groove serves as at least one of the first protruding ring 143 and the second protruding ring 144.

[0054] Optionally, the insertion hole 14 penetrates the second surface 12 to form a first port 141; compared with the first protruding ring 143, the second protruding ring 144 is closer to the first port 141; the rotating shaft 24 is provided with a matching boss 25 which is clearance fitted with the inner ring side of the second protruding ring 144.

[0055] In this way, the radial direction of the rotating shaft 24 inserted into the insertion hole 14 can be limited, the accuracy of the rotating shaft 24 inserted into the insertion hole 14 is ensured, and when the disc body 22 rotates relative to the support base 1, the disc body 22 can be prevented from being dislocated in the radial direction of the insertion hole 14.

[0056] As a specific embodiment of the connecting piece 6, part of the rotating shaft 24 penetrates the bearing 5 to the side of the bearing 5 away from the second surface 12; the part of the rotating shaft 24 penetrating the bearing 5 is provided with the connecting piece 6, the connecting piece 6 is threadedly connected with the bearing 5, and the connecting piece 6 is axially stopped by the bearing 5. The connecting piece 6 and the rotating shaft 24 are connected in a threaded manner, which facilitates the connection of the connecting piece 6 and the rotating shaft 24.

[0057] In the above embodiment, the third surface 11 opposite to the second surface 12 of the support base 1 is defined, the insertion hole 14 penetrates the third surface 11 to form a second port 142, and the second port 142 is used to insert the connecting piece 6. The second port 142 can provide necessary space for manual operation of the connecting piece 6, and facilitates manual operation of the connecting piece 6.

[0058] The specific structure of the angle adjusting device of the present application will be described below with two specific embodiments, and the same parts in the two embodiments will not be described. Embodiment one

[0059] In the embodiment, the first surface 23 is opposite to the second surface 12 in the extension direction of the reference axis s1; that is, as shown in the example in the figure, the disc body 22 is opposite to the support base 1 in the axial direction; the disc body 22 is located on the upper side of the support base 1, the lower surface of the disc body 22 serves as the first surface 23, and the upper surface of the support base 1 serves as the second surface 12; in the embodiment, the upper and lower sides are described in the direction shown in the figure, and the side pointing to the support rod 21 in the extension direction of the reference axis s1 is the upper side, and the opposite side is the lower side.

[0060] In the embodiment, the spring body 41 deforms in the direction parallel to the reference axis s1. Thus, the spring body 41 can form a circumferential stop for the rotating disc 2 in the circumferential direction of the rotating shaft 24 line.

[0061] In the process of angle adjustment, the disc body 22 drives the spherical lock head 42 to rotate, and the lock head 42 is limited in the mounting channel 13, so as to avoid the lock head 42 from being separated from the support base 1. At the same time, the disc body 22 can compress the spring body 41 through the lock head 42 to accumulate deformation force; after being adjusted to the set angle, the lock head 42 can be clamped with the corresponding clamping groove 26.

[0062] In the above operation process, the distance between the first surface 23 and the second surface 12 can be adjusted through the screw connection 6, so as to reduce the wear of the lock head 42 in the process of circumferentially rotating the disc body 22. Embodiment Two

[0063] In the embodiment, different from the embodiment one, the edge of the disc body 22 is further provided with an annular blocking arm extending in the axial direction of the disc body 22, and the annular blocking arm and the disc body 22 enclose a mounting groove; the support base 1 can be inserted into the mounting groove;

[0064] At this time, the inner circumferential side wall of the blocking arm serves as the first surface 23, and the side circumferential wall of the support base serves as the second surface 12. The spring body 41 deforms in the direction perpendicular to the reference axis s1; that is, the deformation direction of the spring body 41 is the radial direction of the disc body 22. Thus, the spring body 41 can form a circumferential stop for the rotating disc 2 in the circumferential direction of the rotating shaft 24 line.

[0065] In the above embodiment, a scale can be marked on the support base 1 and / or the disc body 22, so as to mark the angle of the disc body 22.

[0066] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. An angle adjustment device for optical testing, characterized in that The fixed part and the rotating part are connected by rotation, and the rotating part can rotate relative to the fixed part around a reference axis (s1); Further comprising an elastic locking member (4) arranged on the fixed part, the elastic locking member (4) comprises a spring body (41) and a lock head (42) abutting against the spring body (41), the lock head (42) can roll relative to the spring body (41); the rotating part has a first surface (23), the first surface (23) abuts against the lock head (42) in the deformation direction of the spring body (41); The rotating part is further provided with a clamping groove (26), the clamping groove (26) is recessed by the first surface (23) to form, the clamping groove (26) is uniformly distributed around the reference axis (s1), under the action of the elastic force, the lock head (42) can be clamped with any clamping groove (26) to form a stop in the circumferential direction of the reference axis (s1).

2. The angular adjustment device for optical testing of claim 1, wherein, The fixed part has a mounting channel (13) and a second surface (12) arranged opposite to the first surface (23), the mounting channel (13) is used to accommodate the elastic locking member (4), an opening (131) is formed on the second surface (12); Part of the lock head (42) extends to the outside of the opening (131), the opening (131) forms a stop for the lock head (42) in the deformation direction of the spring body (41).

3. An angle adjustment device for optical testing according to claim 2, characterized in that The spring body (41) deforms along the direction parallel to the reference axis (s1).

4. The angular adjustment device for optical testing of claim 2, wherein, The spring body (41) deforms along the direction perpendicular to the reference axis (s1).

5. The angular adjustment device for optical testing of claim 2, wherein, The rotating part is provided with a rotating shaft (24), the rotating shaft (24) is arranged perpendicular to the rotating part; The fixed part is provided with a jack (14) matched with the rotating shaft (24), the rotating shaft (24) is inserted into the jack (14) and can rotate relative to the jack (14), the rotating shaft (24), the jack (14) and the reference axis (s1) are concentrically arranged; The rotating shaft (24) is further matched with a connecting piece (6), the connecting piece (6) is used to lock the rotating part and the fixed part in the extension direction of the reference axis (s1).

6. The angular adjustment device for optical testing of claim 5, wherein, The jack (14) forms a first port (141) through the second surface (12), and the jack (14) is provided with a first convex ring (143) and a second convex ring (144) arranged axially opposite, a bearing (5) is fixedly arranged between the first convex ring (143) and the second convex ring (144).

7. An angle adjustment device for optical testing according to claim 6, characterized in that Part of the rotating shaft (24) passes through the bearing (5) to the side of the bearing (5) away from the second surface (12); the part of the rotating shaft (24) passing through the bearing (5) is provided with a connecting piece (6), the connecting piece (6) is threadedly connected with the bearing (5), and the connecting piece (6) is axially stopped by the bearing (5).

8. The angular adjustment device for optical testing of claim 7, wherein, The third surface (11) opposite to the second surface (12) in the axial direction defines the fixing portion, and the insertion hole (14) penetrates through the third surface (11) to form a second opening (142) for inserting the connecting member (6).

9. An angle adjustment device for optical testing according to any of claims 1-8, characterized in that, The number of the clamping grooves (26) is even.

10. An angle adjustment device for optical testing according to any of claims 1-8, characterized in that, The lock head (42) is in a spherical structure, and the clamping groove (26) is in a hemispherical structure; the curvature of the hemispherical structure is matched with the curvature of the spherical structure.

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