A fast centering device for optical lens detection

Abstract

The utility model relates to optical element detection technical field, specifically disclose a kind of for optical lens detection's quick centering device, including the pedestal of being provided with placing cavity, the limiting component of being installed on pedestal and with the circle axle of optical lens mutually excircle, the clamping assembly of being rotatably installed on pedestal and with limiting component cooperation use to the clamping of circle axle is fixed, and for locking limiting component and clamping assembly locking piece.The utility model can avoid repeated calibration compared with prior art, ensure the accuracy of repeated positioning, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical component testing technology, and more specifically, to a rapid centering device for optical lens testing. Background Technology

[0002] In the manufacturing of optical devices, the coaxiality between the mechanical reference axis and the internal optical axis of the optical lens directly affects the accuracy of the imaging system.

[0003] Traditional testing methods require calibrating the mechanical reference axis each time the device is clamped, and then statically measuring the optical axis offset using an internal focusing telescope or autocollimator, which has significant technical drawbacks.

[0004] Firstly, each calibration of the mechanical reference axis requires re-clamping, dial indicator printing, and adjustment, making it difficult to match the testing efficiency with the production line cycle time;

[0005] Secondly, the mechanical reference axis has a certain deviation after each recalibration, which will introduce random errors into the testing.

[0006] Existing technologies also employ center-biased turntables for inspection, which can acquire high-precision data, but suffer from low inspection speed and high equipment costs, failing to meet the demands of large-scale continuous inspection. To address these bottlenecks, the industry urgently needs a device that integrates rapid positioning of standard parts, environmental interference resistance, and dynamic error suppression to achieve efficient, batch-based determination of the coaxiality between the lens optical axis and the mechanical reference axis. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a rapid centering device for optical lens inspection, which can avoid repeated calibration, ensure the accuracy of repeated positioning, and improve inspection efficiency compared with the prior art.

[0008] The solution adopted by this utility model to solve the technical problem is:

[0009] A rapid centering device for optical lens inspection includes a base with a placement cavity, a limiting component mounted on the base and externally tangent to the circular axis of the optical lens, a clamping component rotatably mounted on the base and used in conjunction with the limiting component to clamp and fix the circular axis, and a locking member for locking the limiting component and the clamping component.

[0010] In some possible implementations, the limiting assembly includes two sets of limiting posts mounted on the base; the axes of the limiting posts are on the same circle; the angle formed by the lines connecting the axes of the two sets of limiting posts to the center of the circle is α, which is <0° and α is <180°.

[0011] In some possible implementations, 80°≤a≤90°.

[0012] In some possible implementations, the clamping assembly includes a movable frame that rotatably engages with the base and has an arcuate groove on the side near the limiting assembly, and a clamping column installed in the movable frame and used in conjunction with the limiting assembly to clamp the circular shaft during detection.

[0013] In some possible implementations, a mounting cavity for mounting a clamping post is formed between the top of the movable frame and the base, the top of the clamping post is connected to the inner side of the top of the movable frame, and a gap is formed between the bottom of the clamping post and the top surface of the base.

[0014] In some possible implementations, the limiting component further includes a fixed frame mounted on the base and having an arc-shaped groove on the side near the clamping component; the fixed frame is hinged to the movable frame via a hinge; the arc-shaped groove and the arc-shaped slot cooperate to form a through cavity coaxially communicating with the placement cavity; the inner side of the limiting post will be located within the through cavity.

[0015] In some possible implementations, the cavity is cylindrical, and the diameter of the circle is larger than the diameter of the cavity.

[0016] In some possible implementations, the locking element includes a lock seat mounted on a fixed frame and a lock tongue mounted on a movable frame and engaged with the lock seat.

[0017] In some possible implementations, the base includes a base with a placement groove, a boss mounted on the base and a boss with a through groove; the placement groove and the through groove are coaxially connected and cooperate with each other to form a placement cavity;

[0018] The limiting component is mounted on the boss, and the clamping component is located on the boss and rotates with the boss.

[0019] In some possible implementations, a second mounting cavity for mounting a limiting post is formed between the top of the fixing frame and the base, and an avoidance groove communicating with the second mounting cavity is provided on the fixing frame and directly above the limiting post.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention effectively enables the rapid installation of the cylindrical shaft of optical lenses in the same batch through the cooperation of two sets of limiting posts, two sets of clamping posts, and locking components; it avoids repeated calibration, ensures the accuracy of repeated positioning, and improves detection efficiency; it has a simple structure and strong practicality. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a top view of the present invention;

[0024] Figure 3 This is a cross-sectional view of the present invention;

[0025] Figure 4 This is an exploded view of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of this utility model in use;

[0027] The components are: 1. Base; 10. Placement cavity; 11. Base; 12. Boss; 2. Limiting component; 21. Limiting post; 22. Fixing frame; 221. Clearance groove; 222. Rotating shaft; 3. Clamping component; 31. Movable frame; 311. Support; 32. Clamping post; 33. Handle; 4. Locking component; 41. Lock seat; 42. Lock tongue; 100. Optical lens. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention will now be described in detail.

[0030] like Figures 1-5 As shown:

[0031] A rapid centering device for detecting an optical lens 100 is used in conjunction with an autocollimating lens located above it, and includes a base 1 having a placement cavity 10, a limiting component 2 mounted on the base 1 and externally tangent to the circular axis of the optical lens 100, a clamping component 3 rotatably mounted on the base 1 and used in conjunction with the limiting component 2 to clamp and fix the circular axis, and a locking member for locking the limiting component 2 and the clamping component 3.

[0032] During debugging and use, first install the standard optical lens 100 so that the circular axis of the standard optical lens 100 is externally tangent to the limiting component 2; then clamp the standard optical lens 100 with the clamping component 3; finally, lock the limiting component 2 and the clamping component 3 with the locking component 4 to ensure that the standard optical lens 100 will not shift during subsequent testing; it should be noted that the optical axis and the circular axis of the standard optical lens 100 will be coaxial;

[0033] Adjust the autocollimating lens located above the device so that the optical axis of the standard optical lens 100 is on the crosshair center of the autocollimating lens. After the adjustment of the autocollimating lens is completed, when the optical lens 100 to be tested is tested later, the autocollimating lens and the base 1 will no longer move or adjust and will both be in a fixed state.

[0034] Remove the standard optical lens 100, install the optical lens 100 to be tested, and make its circular axis tangent to the limiting component 2; then clamp and lock it; observe the optical axis position of the optical lens 100 to be tested through the autocollimating lens, measure the deviation of the optical axis from the cross center of the autocollimating lens, and determine whether the optical lens 100 to be tested is qualified by the deviation.

[0035] This invention enables batch testing of optical lenses 100 of the same size and batch through quick clamping and observation. When testing optical lenses 100 of the same batch, it is not necessary to repeatedly adjust the position of the autocollimator, which greatly improves the testing efficiency and accuracy.

[0036] In some possible implementations, the limiting component 2 includes two sets of limiting posts 21 mounted on the base 1; the axes of the limiting posts 21 are on the same circle; the center of the circle is on the axis of the placement cavity 10; the angle formed by the lines connecting the axes of the two sets of limiting posts 21 and the center of the circle is α, <0°α <180°; preferably, 80°≤α≤90°; with this arrangement, it is possible to monitor optical lenses 100 with different circular axis sizes using two sets of limiting posts 21; the axis of the limiting posts 21 is parallel to the axis of the placement cavity 10.

[0037] In some possible implementations, in order to effectively clamp and fix the round shaft through the cooperation of the clamping assembly 3 and the limiting post 21, the limiting assembly 2 further includes a fixing frame 22 mounted on the base 1 and having an arc-shaped groove on the side near the clamping assembly 3; the fixing frame 22 is hinged to the movable frame 31; the inner side of the limiting post 21 will be located in the through cavity, and after the round shaft is installed, the outer side of the round shaft will first be externally tangent to the inner side of the limiting post 21, while not contacting the inner side of the arc-shaped groove;

[0038] The clamping assembly 3 includes a movable frame 31 that is rotatably fitted with the base 1 and has an arc-shaped groove on one side near the limiting assembly 2, and a clamping column 32 installed in the movable frame 31 and used in conjunction with the limiting assembly 2 to clamp the circular shaft during testing; the arc-shaped groove and the arc-shaped groove cooperate to form a through cavity coaxially connected with the placement cavity 10; the inner side of the clamping column 32 will be located in the through cavity; the movable frame 31 is located above the base 1 and is not fixed to the base 1, forming a rotatable fit; during clamping, the clamping column 32 will first contact and abut against the outer side of the circular shaft, and will not contact the inner side wall of the arc-shaped groove.

[0039] It should be noted that the fixed frame 22 and the movable frame 31 are hinged, thereby effectively realizing the installation of the movable frame 31; in use, the fixed frame 22 and the movable frame 31 will be connected by the locking component 4, and the cavity formed by the arc groove and the arc slot will be fitted on the outside of the round shaft.

[0040] The clamping column 32 is detachably connected to the movable frame 31, and its axis is parallel to the axis of the placement cavity 10. When clamping round shafts of different sizes, by adjusting the position of the clamping column 32, it can cooperate with the limiting column 21 fixedly installed on the base 1 to clamp the round shaft. When clamping, the clamping column 32 will contact and abut against the outer side of the round shaft.

[0041] The fixed frame 22 will also support and fix the flange on the outer side of the optical lens 100 shaft, thereby achieving the support and fixation of the optical lens 100.

[0042] In some possible implementations, a mounting cavity for mounting a clamping post 32 is formed between the top of the movable frame 31 and the base 1, the top of the clamping post 32 is connected to the inner side of the top of the movable frame 31, and a gap is formed between the bottom of the clamping post 32 and the top surface of the base 1.

[0043] Preferably, the movable frame 31 includes a U-shaped support plate and an mounting plate mounted on the support plate and provided with an arc-shaped groove; an mounting cavity is formed between the bottom of the mounting plate, the inner sidewall of the support plate, and the top surface of the base 1; one end of the support plate is provided with a support 311 that is hinged to the fixed frame 22; the opening of the support plate is located on the side close to the fixed frame 22; two sets of clamping posts 32 are installed at the bottom of the mounting plate.

[0044] Furthermore, a handle 33 is provided on the side of the support plate away from the opening to facilitate the movement of the movable frame 31.

[0045] In some possible implementations, the cavity is cylindrical, the diameter of the circle is D, and the diameter of the cavity is d, where D > d.

[0046] In some possible implementations, in order to effectively lock and fix the fixed frame 22 and the movable frame 31, the locking component includes a lock seat 41 installed on the fixed frame 22 and a lock tongue 42 installed on the movable frame 31 and cooperates with the lock seat 41. The lock tongue 42 and the lock seat 41 will effectively connect the two. The lock seat 41 and the lock tongue 42 are existing technology products, and their internal structure will not be described in detail here. They can be purchased and assembled directly.

[0047] In some possible implementations, the base 1 includes a base 11 with a placement groove, a boss 12 mounted on the base 11 and having a through groove; the placement groove and the through groove are coaxially connected and cooperate with each other to form a placement cavity 10, the size of the placement cavity 10 is larger than the outer diameter of the round shaft, so that the round shaft can be located inside the placement cavity 10.

[0048] The limiting component 2 is mounted on the boss 12, and the clamping component 3 is located on the boss 12 and rotates with the boss 12.

[0049] Furthermore, two sets of mounting holes are provided on the boss 12 for mounting the limiting post 21. The centers of the two sets of mounting holes will be located on the same circle. When the placement cavity 10 is cylindrical, the diameter of the circle containing the center of the mounting hole is greater than the diameter of the placement cavity 10, and the center of the circle will be on the same straight line as the axis of the placement cavity 10.

[0050] In some possible implementations, a second mounting cavity for mounting the limiting post 21 is formed between the top of the fixing frame 22 and the base 1, and an avoidance groove 221 communicating with the second mounting cavity is provided on the fixing frame 22 and directly above the limiting post 21.

[0051] Preferably, the fixing frame 22 includes a second support plate with a U-shaped structure mounted on the boss 12 and a second mounting plate with an arc-shaped groove disposed on the second support plate; one end of the second support plate is provided with a rotating shaft 222 that rotatably engages with the support 311; the support 311 is fitted onto the outside of the rotating shaft 222 to achieve a hinged engagement between the fixing frame 22 and the limiting frame; the clearance groove 221 is disposed on the second mounting plate and located directly above the limiting post 21, and the clearance groove 221 communicates with the second mounting cavity, so that different limiting posts 21 can be easily replaced without removing the fixing frame 22.

[0052] In use, place the flange on the outer side of the standard optical lens 100's circular shaft on the support plate 2, ensuring that the outer side of the circular shaft is tangent to the two sets of limiting shafts. At this point, the outer side of the circular shaft will not contact or abut against the inner wall of the placement cavity 10 or the through cavity. Then, control the movable frame 31 to rotate around and with the rotating shaft 222 of the fixed frame 22, causing the clamping column 32 to move to one side of the circular shaft and abut against the outer side of the circular shaft. Then, the standard optical lens 100 is locked and fixed by connecting the locking tongue 42 to the locking seat 41. Then, adjust the cross center of the autocollimator so that the cross center coincides with the optical axis of the standard optical lens 100. After adjustment, the autocollimator and base 1 will no longer move. Remove the standard optical lens 100, and the optical lens 100 to be tested can be installed and observed.

[0053] The installation of the optical lens 100 to be tested is the same as that of the standard optical lens 100. After installation, the optical axis position of the optical lens 100 to be tested is observed through the autocollimating lens, and the deviation between the optical axis position and the center of the crosshair of the autocollimating lens is measured. The deviation is used to determine whether it is qualified.

[0054] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A rapid centering device for optical lens inspection, characterized in that, It includes a base with a placement cavity, a limiting assembly mounted on the base and externally tangent to the circular shaft of the optical lens, a clamping assembly rotatably mounted on the base and used in conjunction with the limiting assembly to clamp and fix the circular shaft, and a locking member for locking the limiting assembly and the clamping assembly.

2. The rapid centering device for optical lens inspection according to claim 1, characterized in that, The limiting assembly includes two sets of limiting posts mounted on the base; the axes of the limiting posts are on the same circle; the angle formed by the lines connecting the axes of the two sets of limiting posts to the center of the circle is α, which is <0° and α is <180°.

3. A rapid centering device for optical lens inspection according to claim 2, characterized in that, 80°≤a≤90°。 4. A rapid centering device for optical lens inspection according to claim 2, characterized in that, The clamping assembly includes a movable frame that rotates with the base and has an arc-shaped groove on one side near the limiting assembly, and a clamping column installed in the movable frame and used in conjunction with the limiting assembly to clamp the circular shaft during testing.

5. A rapid centering device for optical lens inspection according to claim 4, characterized in that, A mounting cavity for mounting a clamping column is formed between the top of the movable frame and the base. The top of the clamping column is connected to the inner side of the top of the movable frame, and a gap is formed between the bottom of the clamping column and the top surface of the base.

6. A rapid centering device for optical lens inspection according to claim 4, characterized in that, The limiting component also includes a fixed frame mounted on the base and having an arc-shaped groove on the side near the clamping component; the fixed frame is hinged to the movable frame via a hinge; the arc-shaped groove and the arc-shaped slot cooperate to form a through cavity coaxially connected to the placement cavity; the inner side of the limiting post will be located in the through cavity.

7. A rapid centering device for optical lens inspection according to claim 6, characterized in that, The cavity is cylindrical, and the diameter of the circle is larger than the diameter of the cavity.

8. A rapid centering device for optical lens inspection according to claim 4, characterized in that, The locking component includes a lock seat mounted on a fixed frame and a lock tongue mounted on a movable frame and engaged with the lock seat.

9. A rapid centering device for optical lens inspection according to any one of claims 1-8, characterized in that, The base includes a base with a placement groove, a boss mounted on the base and a boss with a through groove; the placement groove and the through groove are coaxially connected and cooperate with each other to form a placement cavity; The limiting component is mounted on the boss, and the clamping component is located on the boss and rotates with the boss.

10. A rapid centering device for optical lens inspection according to claim 6, characterized in that, A second mounting cavity for installing a limiting post is formed between the top of the fixed frame and the base. An avoidance groove communicating with the second mounting cavity is provided on the fixed frame and directly above the limiting post.

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