All-in-one machine lens hr detection jig
By designing an HR testing fixture with detachable limiting parts and positioning holes, the problem of inaccurate lens testing results in the prior art is solved. The same fixture can be used to test lenses in different states, improving testing accuracy and fixture flexibility, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN LEADING OPTICS
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-19
AI Technical Summary
Existing HR testing fixtures require the use of different fixtures when testing lenses, resulting in inaccurate test results. Furthermore, residual adhesive on the bottom of defective lenses after AA (anti-aliasing) affects the test results.
An integrated lens HR testing fixture was designed, which adopts a detachable limiting part and positioning hole to adapt to lenses in different states. The design of the detachable limiting part and positioning hole ensures that the lens is stably and accurately positioned during the testing process, reducing testing errors. The adjustable pressure block and spring structure further improves the stability and testing accuracy of the lens.
It improves the versatility of the fixture and the accuracy of the test results, reduces maintenance costs and time, enhances the applicability to lenses, and reduces test errors and potential damage risks.
Smart Images
Figure CN224382783U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing fixture technology, and in particular to an integrated lens HR testing fixture. Background Technology
[0002] Lens optical parameters are typically tested using HR (High-Resolution) equipment. During testing, an HR testing fixture is required to transfer the lens to the HR machine. Existing HR testing fixtures usually use the bottom of the lens for support and restraint. For some lenses with ICR (Independent Cord Recognition), different HR testing fixtures are needed for single-lens and ICR-equipped lenses. The different support surfaces lead to inaccurate test results. Furthermore, defective lenses after AA (Anti-Aging) often have residual adhesive on the bottom after disassembly, making bottom-supported testing inaccurate and preventing effective analysis of the AA-equipped lenses. Utility Model Content
[0003] In view of this, the purpose of this utility model is to propose an integrated lens HR detection fixture, which can solve at least one of the technical problems mentioned in the background art.
[0004] According to one aspect of the present invention, an integrated lens HR testing fixture is provided, the fixture comprising:
[0005] A cavity with one open end has several limiting parts and several positioning holes detachably provided on the bottom surface of the cavity; the limiting parts are detachably connected to the bottom surface of the cavity and can move up and down in the vertical direction of the bottom surface; the limiting parts are used to limit the displacement of the lens in the vertical direction of the bottom surface when the lens is placed at the bottom of the cavity through the positioning holes.
[0006] In the above technical solution, the design of the detachable limiting part and positioning hole allows for adaptation to lenses in different states, namely single-lens and lenses with ICR, eliminating the need for separate HR inspection fixtures and improving the fixture's versatility and flexibility. The limiting part can move vertically up and down along the bottom surface, adjusting according to the actual height of the lens to ensure stable and accurate positioning during inspection, reducing inspection errors caused by inconsistent bearing surfaces, and improving the accuracy of inspection results. This facilitates effective analysis of defective lenses after AA (anti-aliasing). The limiting part is detachably connected to the bottom surface of the cavity, allowing for easy disassembly and replacement when needed without requiring large-scale modifications to the entire fixture. This improves the fixture's maintainability and reduces maintenance costs and repair time.
[0007] In some embodiments, the limiting part includes an elongated pressure block and a connecting part perpendicular to it; a guide rod that restricts the pressure block from moving vertically along the bottom surface; and a spring sleeved on the guide rod and with its two ends abutting the top of the guide rod and the connecting part, for resetting the pressure block; the limiting part is detachably connected to the bottom surface of the cavity via the guide rod, and the pressure block can rotate around the center of the guide rod.
[0008] In the above technical solution, the elongated pressure block increases the contact area with the lens, thereby distributing pressure more evenly, reducing pressure on the lens surface, and lowering the potential risk of damage to the lens. Simultaneously, the elongated design better adapts to changes in the shape of the lens surface, improving the grip stability and preventing the lens from slipping or tilting during inspection, further enhancing inspection accuracy. The perpendicular design of the connecting part to the pressure block makes the entire limiting structure more stable. This vertical layout effectively transmits and disperses the force exerted by the lens on the pressure block, transmitting the force along the guide rod to the bottom surface, ensuring that the pressure block does not skew or twist when limiting lens displacement, guaranteeing the accuracy and reliability of the limiting. The pressure block can rotate around the center of the guide rod, allowing adjustment of the pressure block angle to adapt to the shape and contour of the lens bottom, ensuring a tight fit between the pressure block and the lens surface, thus providing a more uniform pressure distribution, reducing the risk of damage to the lens surface, and improving the stability and reliability of the limiting. This design allows the pressure block to limit the lens from different angles, better adapting to minor deviations in lens placement, improving the constraint effect on lens position, and further enhancing inspection accuracy. For lenses of different shapes, sizes, or with special structures (such as ICR), the rotating clamp can better match their shape characteristics, expanding the applicability of the fixture and enabling it to adapt to more types of lens inspection needs. When placing the lens, the rotating clamp can more easily avoid protrusions or recesses on the lens, reducing resistance and difficulty for operators when placing the lens, and improving the convenience and efficiency of the inspection operation.
[0009] In some embodiments, there are four limiting parts arranged around the center of the cavity, and the included angle between adjacent limiting parts is 90°.
[0010] In the above technical solution, four limiting parts are located at the bottom of the cavity, with adjacent parts forming a 90° angle. This ensures that the lens receives uniform support and limiting force in the opposite direction when placed, preventing tilting or displacement caused by uneven force, improving the accuracy of lens positioning, and making the test results more reliable and accurate. For lenses of different shapes, especially those with ICR structures, this uniformly distributed limiting part can better match the lens shape, providing more stable support and limiting, adapting to the testing needs of various lenses, and enhancing the versatility and flexibility of the fixture.
[0011] In some embodiments, the open end of the cavity is further provided with an annular base.
[0012] In the aforementioned technical solution, the base provides additional support and stability to the lens, reducing lens movement during inspection and further improving the accuracy of the inspection results. This effect is particularly pronounced for heavier or irregularly shaped lenses. Furthermore, the base guides and positions the lens during placement, making it easier and more accurate to position it in the inspection location, reducing operator adjustment time and improving inspection efficiency. Moreover, the base design allows for adjustment of the fixture height to accommodate lenses of different widths.
[0013] In some embodiments, the annular base is connected to the cavity by a thread.
[0014] In the above technical solution, the inner and outer diameters of the base and the cavity are matched and tolerances are controlled, so that the lens can be kept horizontal with the machine after the cavity is placed on the base, thus making the test accurate.
[0015] In some embodiments, the bottom surface of the cavity is parallel to the working surface of the testing machine.
[0016] In the above technical solution, the parallel design ensures that the lens is in the correct orientation when placed on the bottom surface of the cavity, maintaining good coaxiality and perpendicularity between the lens's optical axis and the detection axis of the testing machine. This reduces detection errors caused by lens tilt or offset, improving the accuracy and reliability of the detection results. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a two-dimensional structural schematic diagram of an embodiment of the HR detection fixture for an all-in-one camera lens;
[0019] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the HR detection fixture for an all-in-one camera lens;
[0020] Figure 3 This is a schematic diagram of a single lens clamping in an embodiment of an integrated camera lens HR testing fixture;
[0021] Figure 4 This is a schematic diagram of the lens with ICR state in an embodiment of an integrated camera lens HR detection fixture. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0023] Example 1
[0024] Please see Figure 1 The testing fixture includes: a cavity 2 with one end open, the bottom surface of which is detachably provided with a plurality of limiting parts (3, 4, 5) and a plurality of positioning holes 6; the limiting parts are detachably connected to the bottom surface of the cavity 2 and can move up and down along the vertical direction of the bottom surface; the limiting parts (3, 4, 5) are used to limit the displacement of the lens in the vertical direction of the bottom surface when the lens is placed at the bottom of the cavity through the positioning holes.
[0025] In this embodiment, the limiting part includes a pressure block 4; a guide rod 3 that restricts the pressure block 4 from moving vertically along the bottom surface; and a spring 5 that is sleeved on the guide rod 3 and whose two ends abut against the top of the guide rod 3 and the pressure block 4, respectively, for resetting the pressure block 4; the limiting part is detachably connected to the bottom surface of the cavity 2 through the guide rod 3.
[0026] In this embodiment, there are four limiting parts arranged around the center of the cavity, and the included angle between adjacent limiting parts is 90°.
[0027] In this embodiment, a base 1 is also provided at the open end of the cavity 2. The base 1 is threadedly connected to the cavity 2. The bottom surface of the cavity 2 is parallel to the working surface of the testing machine (not shown in the figure, referring to the testing of the testing machine, i.e., the plane used to calibrate the fixture during testing).
[0028] As a preferred option, the details are as follows: Please refer to [link / reference]. Figure 3 (Diagram of clamping in single-lens mode) Figure 4 (Schematic diagram of lens clamping in ICR state) A new type of HR detection fixture includes a base 1, an upper cover 2 (i.e., the cavity mentioned above, the same below), a guide rod 3, a pressure block 4, and a spring 5.
[0029] Spring 5 is placed in the groove of pressure block 4, guide rod 3 passes through pressure block 4 and is connected to the upper cover 2 by threads, and lens P is connected to positioning pin 6 by several positioning pins (see reference). Figure 1 , Figure 2 The upper cover 2 is positioned and placed in the upper cover 2, and is pressed and fixed by the pressure block 4 and spring 5. The upper cover 2 is placed on the base 1 by the inner and outer diameters fitting together, and the base 1 is placed on the testing machine.
[0030] The working principle is as follows:
[0031] Because spring 5 is placed between pressure block 4 and guide rod 3 and compressed, pressure block 4 is subjected to pressure from spring 5. When pressure block 4 moves upward, it is subjected to downward pressure from spring 5. Thus, after the lens is placed on the top cover 2, it can be pressed and fixed by pressure block 4. Because there are 4 sets of guide rods 3, pressure block 4 and spring 5, different pressure blocks 4 can be used to fix the lens in different states (single lens, with ICR, AA residual glue). Because the spring length can be changed, the pressure of pressure block 4 can be adjusted. Thus, the lens can be kept parallel to the top cover 2 by adjusting the pressure of pressure block 4 in different states. Because of the fit between the inner and outer diameters of base 1 and top cover 2 and the tolerance control, the lens can be kept horizontal with the machine after the top cover 2 is placed on base 1, thus making the test accurate.
[0032] The advantages of this application are that the HR testing fixture is adaptable, allowing the lens to rest against the front end face. By adjusting two sets of pressure springs, the lens can be kept parallel in both single-lens and ICR-equipped states after clamping. This allows the same fixture to be used for testing lenses (single-lens, with ICR, and with residual AA adhesive), resulting in more accurate test results. It also allows for analysis of the impact of lens assembly with ICR on lens imaging and the removal of residual adhesive after lens AA from the testing process.
[0033] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.
Claims
1. A HR testing fixture for an integrated camera lens, characterized in that, The testing fixture includes: A cavity with one open end has several limiting parts and several positioning holes detachably provided on the bottom surface of the cavity; the limiting parts are detachably connected to the bottom surface of the cavity and can move up and down in the vertical direction of the bottom surface; the limiting parts are used to limit the displacement of the lens in the vertical direction of the bottom surface when the lens is placed at the bottom of the cavity through the positioning holes.
2. The integrated lens HR testing fixture as described in claim 1, characterized in that, The limiting part includes an elongated pressure block and a connecting part perpendicular to it; a guide rod that restricts the movement of the pressure block in the vertical direction along the bottom surface; and a spring sleeved on the guide rod and with its two ends abutting the top of the guide rod and the connecting part, for resetting the pressure block; the limiting part is detachably connected to the bottom surface of the cavity via the guide rod.
3. The integrated lens HR testing fixture as described in claim 1, characterized in that, There are four limiting parts, arranged around the center of the cavity, with an included angle of 90° between adjacent limiting parts.
4. The integrated lens HR testing fixture as described in claim 1, characterized in that, The cavity is also provided with a base at its open end.
5. The integrated lens HR testing fixture as described in claim 4, characterized in that, The base and the cavity are connected by threads.
6. The integrated lens HR testing fixture as described in claim 1, characterized in that, The bottom surface of the cavity is parallel to the working surface of the testing machine.