A lens surface finish testing device

Abstract

This invention provides a lens surface finish testing device, comprising: a base, a support frame, and a placement mechanism; the support frame is connected to the upper surface of the base and has a placement position for placing an illumination device; the placement mechanism includes a placement frame and a placement component; the placement frame is rotatably connected to the support frame and has a storage portion for storing the placement component; the placement component has a limiting portion for placing the lens to be tested; the placement component consists of a base plate and a cover plate; the base plate has an embedding groove to accommodate the cover plate; the base plate and the cover plate each have a through hole with a truncated ring; when the cover plate is fastened into the embedding groove, the two through holes are coaxially aligned, and their truncated rings together form a limiting portion for supporting the lens, and there are multiple limiting portions. Thus, by using a placement component capable of carrying lenses in batches and utilizing the light source of the illumination device to perform rapid and efficient surface finish screening of multiple lenses, the testing efficiency is significantly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of lens quality inspection equipment, and in particular relates to a lens smoothness testing device. Background Technology

[0002] As a core component of optical products, the surface finish of lenses is a key indicator of product quality. Before leaving the factory, lenses must undergo rigorous surface finish inspection to detect defects such as scratches, pitting, oil stains, and foreign matter. Qualified lenses are fundamental to ensuring the imaging quality and performance of subsequent optical systems.

[0003] Currently, the industry generally uses manual visual inspection to test the smoothness of lenses. The specific procedure is as follows: under the illumination of a specific light source (such as fluorescent lamps or LED parallel light sources), quality inspectors hold a single lens and, by constantly changing the angle of the lens, observe the light reflected from the lens surface with the naked eye to determine whether there are any defects.

[0004] However, this traditional manual inspection method requires inspecting each lens individually, and its speed depends entirely on the experience and skill of the individual quality inspector. When faced with large-scale, high-volume lens production tasks, it requires a significant investment of manpower and resources, making the inspection process a bottleneck in the entire production process and unable to meet the high-efficiency demands of modern industry. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a lens smoothness testing device that can efficiently test the smoothness of lenses, so as to at least partially solve the problems in the related technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A lens surface finish testing device includes: a base, a support frame, and a storage mechanism;

[0008] The base has a support frame connected to its upper surface and a placement position for placing lighting equipment. The placement mechanism includes a placement frame and a placement component. The placement frame is rotatably connected to the support frame and has a storage part for storing the placement component. The placement component has a limiting part for placing a lens to be tested. There are multiple limiting parts. The placement component includes a base plate and a cover plate. The base plate has an embedding groove for storing the cover plate. The base plate has a first through hole and a first annular platform. The first annular platform is fixed to the inner wall of the first through hole. The cover plate has a second through hole and a second annular platform. The second annular platform is fixed to the inner wall of the second through hole. When the cover plate is fastened into the embedding groove, the first through hole and the second through hole are coaxially arranged and have the same diameter. The first annular platform and the second annular platform form the limiting part.

[0009] Furthermore, the support frame is provided with a rotating column, a bearing is installed on the rotating column, and the storage frame is provided with a receiving sleeve corresponding to the rotating column. The receiving sleeve has a rotating groove for the rotating column to be inserted into, and the bearing is located between the rotating column and the receiving sleeve.

[0010] Furthermore, it also includes a locking mechanism;

[0011] The locking mechanism includes a locking cylinder, a locking rod, a locking spring, a fixing plate, and a guide plate. The locking cylinder is fixedly connected to the support frame and has a receiving cavity. One end of the locking rod extends out of the receiving cavity through the opening of the support frame and passes through the support frame. The fixing plate is fixedly connected to the locking rod. The guide plate is fixedly connected to the receiving cavity and has a guide hole for the locking rod to pass through. The locking spring is sleeved on the locking rod and located between the fixing plate and the guide plate. The receiving sleeve has a locking groove corresponding to the locking rod.

[0012] Furthermore, the end of the locking rod facing away from the locking cylinder is hemispherical, and the locking groove is hemispherical.

[0013] Furthermore, there are multiple locking mechanisms, which are arranged at intervals along the circumference of the rotating column.

[0014] Furthermore, there are multiple locking grooves, which are arranged at intervals along the circumference of the rotating column.

[0015] Furthermore, the lower surface of the base is provided with support columns.

[0016] Furthermore, the storage frame is equipped with a fixing component;

[0017] The fixing component includes a fixing frame, a sleeve, a screw, and a hand-tightening nut. The sleeve is rotatably connected to the fixing frame, the screw is fixedly connected to the sleeve, the hand-tightening nut is threadedly connected to the screw, and a positioning plate is fixedly connected to the base plate. The positioning plate has locking lugs corresponding to the screw at both ends that are arranged opposite to each other along its own length direction.

[0018] Furthermore, the positioning plate is provided with a handle.

[0019] Furthermore, the cover plate is provided with a positioning pin, and the base plate is provided with a positioning groove corresponding to the positioning pin.

[0020] Through the above technical solution, the large-scale batch loading and fixing of lenses is achieved by using multiple limiting parts in the placement mechanism, which consist of a base plate and a cover plate that are fastened together. This fundamentally changes the traditional mode of testing one by one, and the testing efficiency is effectively increased. Specifically, when the cover plate is fastened into the embedding groove of the base plate, the first through hole and the second through hole are coaxially arranged and have the same diameter, so that the lens can be stably placed in them. The limiting part formed by the first ring stage and the second ring stage not only provides precise radial positioning for the lens and avoids the lens shaking during the testing process, but more importantly, its ring structure ensures that the optical surface to be tested can be fully exposed when the lens is fixed. The edges of the first ring stage and the second ring stage will not cause large-area obstruction of the observation field of view, creating the necessary conditions for subsequent rapid and comprehensive visual inspection under a unified light source. Meanwhile, the entire storage assembly can be stored in the storage compartment of the storage frame, which is rotatably connected to the support frame. This allows inspectors to easily rotate the storage mechanism and the storage frame containing multiple lenses, thereby quickly and continuously changing the tilt angle of the lenses. This enables inspectors to efficiently and thoroughly examine the defects on the lens surface under different angles of light. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the lens surface finish testing device provided in an exemplary embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of the structure of the base, support frame and storage frame provided in an exemplary embodiment of this disclosure;

[0024] Figure 3 This is a cross-sectional structural schematic diagram of the locking mechanism provided in an exemplary embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of the structure of the storage frame provided in an exemplary embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of the support frame provided in an exemplary embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the structure of the storage component provided in an exemplary embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of the structure of the base plate provided in an exemplary embodiment of this disclosure;

[0029] Figure 8 This is a schematic diagram of the structure of the cover plate provided in an exemplary embodiment of this disclosure.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Base; 101. Placement position; 102. Support column; 2. Support frame; 201. Rotating column; 202. Bearing; 3. Storage frame; 4. Base plate; 401. First through hole; 402. First ring platform; 403. Positioning groove; 404. Embedding groove; 5. Cover plate; 501. Second through hole; 502. Second ring platform; 503. Positioning pin; 6. Receiving sleeve; 601. Rotating groove; 602. Locking groove; 7. Locking mechanism; 701. Locking cylinder; 702. Locking rod; 703. Locking spring; 704. Fixing plate; 705. Guide plate; 8. Fixing assembly; 801. Fixing frame; 802. Sleeve; 803. Screw; 9. Handle; 10. Positioning plate; 11. Snap-fit ​​ear plate. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] In the specific embodiments provided in this disclosure, a lens surface finish testing device is provided, with reference to... Figures 1 to 8 As shown, the lens surface finish testing device includes: a base 1, a support frame 2, and a storage mechanism. The support frame 2 is connected to the upper surface of the base 1 and has a placement position 101 for placing an illumination device. The storage mechanism includes a storage frame 3 and a storage assembly. The storage frame 3 is rotatably connected to the support frame 2 and has a storage section for storing the storage assembly. The storage assembly has multiple limiting sections for placing the lens to be tested. The storage assembly includes a base plate 4 and a cover plate 5. The base plate 4 has a storage section for... The cover plate 5 has an embedding groove 404. The bottom plate 4 is provided with a first through hole 401 and a first annular platform 402. The first annular platform 402 is fixed to the inner wall of the first through hole 401. The cover plate 5 is provided with a second through hole 501 and a second annular platform 502. The second annular platform 502 is fixed to the inner wall of the second through hole 501. When the cover plate 5 is fastened into the embedding groove 404, the first through hole 401 and the second through hole 501 are coaxially arranged and have the same diameter. The first annular platform 402 and the second annular platform 502 form a limiting part.

[0037] Through the above technical solution, the large-scale batch loading and fixing of lenses is achieved by using multiple limiting parts in the placement mechanism, which consist of a base plate 4 and a cover plate 5 fastened together. This fundamentally changes the traditional mode of individual inspection and effectively increases inspection efficiency. Specifically, when the cover plate 5 is fastened into the embedding groove 404 of the base plate 4, the first through hole 401 and the second through hole 501 are coaxially arranged and have the same diameter, allowing the lens to be stably placed therein. The limiting part formed by the first ring stage 402 and the second ring stage 502 not only provides precise radial positioning for the lens and avoids the lens from shaking during the inspection process, but more importantly, its ring structure ensures that the optical surface to be inspected can be fully exposed when the lens is fixed. The edges of the first ring stage 402 and the second ring stage 502 will not cause large-area obstruction to the field of view, creating the necessary conditions for subsequent rapid and comprehensive visual inspection under a unified light source. Meanwhile, the entire storage assembly can be stored in the storage section of the storage frame 3, which is rotatably connected to the support frame 2. This allows the inspector to easily rotate the storage mechanism and the storage frame 3, which contains multiple lenses, thereby quickly and continuously changing the tilt angle of the lenses. This enables the inspector to efficiently and thoroughly inspect the defects on the lens surface under different angles of light.

[0038] In some implementations, reference Figure 2 , Figure 4 and Figure 5 As shown, the support frame 2 is provided with a rotating column 201, and a bearing 202 is installed on the rotating column 201. The storage frame 3 is provided with a receiving sleeve 6 corresponding to the rotating column 201. The receiving sleeve 6 has a rotating groove 601 for the rotating column 201 to be inserted. The bearing 202 is located between the rotating column 201 and the receiving sleeve 6. Specifically, the bearing 202 embedded in the rotating groove 601 greatly reduces the frictional torque during rotation, so that even if the storage assembly is fully loaded with multiple lenses, the rotation of the entire storage mechanism is still very easy and effortless. The inspector can smoothly move the storage frame 3 with one hand to make it rotate smoothly around the rotating column 201, avoiding the lens from accidentally shaking or even colliding in the limiting part due to rotation jamming or shaking. This not only ensures the stability of the inspection process, but also protects the lens surface from secondary scratches.

[0039] Meanwhile, the bearing 202 ensures that the rotation axis of the storage frame 3 remains stable, so that all lenses can maintain a consistent trajectory during rotation. By rotating, the lens angle can be switched, which makes it convenient for inspectors to inspect the smoothness of the lens from multiple angles.

[0040] In some implementations, reference Figure 3 and Figure 4As shown, the locking mechanism 7 includes a locking cylinder 701, a locking rod 702, a locking spring 703, a fixing plate 704, and a guide plate 705. The locking cylinder 701 is fixed to the support frame 2 and has a receiving cavity. One end of the locking rod 702 extends out of the receiving cavity through the opening of the support frame 2 and passes through the support frame 2. The fixing plate 704 fixes the locking rod 702. The guide plate 705 is fixed to the receiving cavity and has a guide hole for the locking rod 702 to pass through. The locking spring 703 is sleeved on the locking rod 702 and is located between the fixing plate 704 and the guide plate 705. The receiving sleeve 6 has a locking groove 602 corresponding to the locking rod 702.

[0041] The locking mechanism 7 can lock the storage frame 3 and the storage components, so that the storage frame 3 can be lockably rotatably connected to the support frame 2. When the operator rotates the storage frame 3 to a specific angle (usually the optimal observation angle), under the elastic force of the locking spring 703, the end of the locking rod 702 is pressed into the locking groove 602 on the receiving sleeve 6, which effectively suppresses the accidental rotation of the storage frame 3 due to inertia or slight external force, thereby firmly locking the entire storage mechanism at the tilt angle. This allows the inspector to focus on the detailed inspection of the tilted lens without having to hold the storage frame 3 in real time.

[0042] In some embodiments, the guide hole on the guide plate 705 ensures that the locking rod 702 always moves linearly along its axial direction, preventing skew and jamming, and ensuring the uniformity of the displacement of the locking rod 702.

[0043] To enable inspectors to more easily switch lens tilt angles and conduct more comprehensive surface finish inspections, refer to Figure 3 and Figure 4 As shown, the end of the locking rod 702 facing away from the locking cylinder 701 is hemispherical, and the locking groove 602 is hemispherical. That is, the hemispherical end of the locking rod 702 cooperates with the hemispherical locking groove 602. When it is necessary to rotate the storage frame 3, there is no need to pull the locking rod 702. Just rotate the storage frame 3 with a little force to make the locking rod 702 disengage from the locking groove 602. Specifically, when the rotational torque applied to the storage frame 3 by the inspector overcomes the elastic force of the locking spring 703, the inclined contact surface between the end of the hemispherical locking rod 702 and the hemispherical locking groove 602 will convert part of the rotational force into an axial thrust towards the locking rod 702, forcing the locking rod 702 to compress the locking spring 703 and move backward into the locking cylinder 701, so that the hemispherical end can slide out of the locking groove 602 smoothly and achieve automatic unlocking.

[0044] In some implementations, reference Figure 3 and Figure 4As shown, there are multiple locking mechanisms 7, which are arranged at intervals along the circumference of the rotating column 201. For example, there are four locking mechanisms 7, with the rotating column 201 as the center and the interval between two adjacent locking mechanisms 7 is 90°. The arrangement of multiple locking mechanisms 7 can effectively lock the tilt angle of the storage frame 3. That is, under the joint action of multiple locking springs 703, the storage frame 3 can obtain a balanced and stable locking force, thereby greatly improving the reliability and stability of locking.

[0045] For example, when the end of the locking rod 702 is engaged in the locking groove 602, the multiple locking mechanisms 7 evenly distributed in the circumference can simultaneously apply locking forces from different directions, forming multiple radial constraints distributed around the rotating column 201.

[0046] To enable the lens to be locked at multiple angles, multiple locking slots 602 are provided. These multiple locking slots 602 are arranged at intervals along the circumference of the rotating column 201. For example, with the rotating column 201 as the center, the interval between two adjacent locking slots 602 is 30°. The number of locking slots 602 is greater than the number of locking mechanisms 7. The multiple locking slots 602 and the multiple locking mechanisms 7 work together to greatly improve the angle adjustment precision of the detection equipment, thereby enabling more comprehensive subsequent detection operations. Specifically, by densely arranging multiple locking slots 602 at smaller angular intervals (such as 30°) in the circumferential direction, a larger number and denser distribution of locking reference points are provided for the rotation locking of the storage frame 3. This allows inspectors to obtain a stable and reliable locking position within a rotation range of 0° to 360°, with each small rotation (such as 30°). This provides a good observation angle basis for inspectors to check the smoothness of the surface, ensuring that every area on the lens can be carefully inspected under the optimal light reflection angle, greatly reducing the risk of missing scratches or defects due to insufficient angle changes.

[0047] In some implementations, reference Figure 1 As shown, a support column 102 is provided on the lower surface of the base 1. The bottom of the support column 102 is equipped with anti-slip pads, which can effectively enhance the overall stability of the equipment during the testing process.

[0048] In some implementations, reference Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the storage frame 3 is equipped with a fixing component 8, which includes a fixing frame 801, a sleeve 802, a screw 803, and a hand-tightening nut. The sleeve 802 is rotatably connected to the fixing frame 801, the screw 803 is fixedly connected to the sleeve 802, and the hand-tightening nut is threadedly connected to the screw 803. The base plate 4 is fixedly connected to a positioning plate 10. Both ends of the positioning plate 10, which are arranged opposite each other along its own length, are provided with snap-fit ​​ears 11 corresponding to the screw 803. Specifically, when it is necessary to install the storage component loaded with a batch of lenses into the storage frame 3, the inspector only needs to align the snap-fit ​​ears 11 at both ends of the positioning plate 10 and snap them into the corresponding positions of the screw 803, and then tighten the hand-tightening nut to complete the fixing of the storage component and make it stably placed in the storage part of the storage frame 3.

[0049] In some implementations, reference Figure 6 and Figure 7 As shown, the positioning plate 10 is equipped with a handle 9. After a batch of lenses has been inspected, the operator can easily lift and remove the entire storage assembly from the storage frame 3 by simply loosening the hand-tightening nut using the handle 9. Then, another storage assembly with lenses already loaded for inspection can be quickly installed into place using the fixing component 8. The handle 9 avoids the inconvenience of directly gripping the positioning plate 10 or the base plate 4 with the hands.

[0050] For example, during continuous operation, the handle 9 provides the operator with a stable and comfortable point of force application, making the handling process smoother and safer, and effectively reducing the risk of lens damage due to shaking and collision during transportation.

[0051] In some implementations, reference Figure 7 and Figure 8 As shown, the cover plate 5 is provided with a positioning pin 503, and the base plate 4 is provided with a positioning groove 403 corresponding to the positioning pin 503. When the inspector fastens the cover plate 5 onto the base plate 4, the positioning pin 503 will be guided into the positioning groove 403 before the cover plate 5 fully contacts the surface of the base plate 4. At this time, under the coordinated guiding action of the positioning pin 503 and the positioning groove 403, the positional relationship between the base plate 4 and the cover plate 5 can be guided, that is, to ensure that the second through hole 501 and the second ring platform 502 on the cover plate 5 can be precisely concentric with the first through hole 401 and the first ring platform 402 on the base plate 4, so that the limiting part for clamping the lens formed by the two together has a regular shape and uniform force, effectively preventing the lens clamping from being crooked due to misalignment.

[0052] For example, in order to improve the connection strength between the base plate 4 and the cover plate 5, that is, during the process of installing the storage component into the storage part of the storage frame 3 or removing the storage component from the storage part, the base plate 4 and the cover plate 5 will not easily separate, causing the lens to detach from the limiting part, the positioning pin 503 and the positioning groove 403 can adopt an interference fit assembly structure, and a rubber pad ring can be provided on the positioning pin 503 to fill the gap between the positioning pin 503 and the positioning groove 403.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lens surface finish testing device, characterized in that, include: Base (1), support frame (2), and storage mechanism; The base (1) has the support frame (2) connected to its upper surface and has a placement position (101) for placing lighting equipment. The placement mechanism includes a placement frame (3) and a placement component. The placement frame (3) is rotatably connected to the support frame (2) and has a storage part for storing the placement component. The placement component has a limiting part for placing a lens to be tested. The number of limiting parts is multiple. The placement component includes a base plate (4) and a cover plate (5). The base plate (4) has an embedding groove (404) for storing the cover plate (5). The base plate (4) has a first... The cover plate (5) has a through hole (401) and a first annular platform (402), the first annular platform (402) being fixedly connected to the inner wall of the first through hole (401). The cover plate (5) is provided with a second through hole (501) and a second annular platform (502), the second annular platform (502) being fixedly connected to the inner wall of the second through hole (501). When the cover plate (5) is fastened into the embedded groove (404), the first through hole (401) and the second through hole (501) are coaxially arranged and have the same diameter. The first annular platform (402) and the second annular platform (502) form the limiting part.

2. The lens surface finish testing device according to claim 1, characterized in that: The support frame (2) is provided with a rotating column (201), and a bearing (202) is installed on the rotating column (201). The storage frame (3) is provided with a receiving sleeve (6) corresponding to the rotating column (201). The receiving sleeve (6) has a rotating groove (601) for the rotating column (201) to be inserted. The bearing (202) is located between the rotating column (201) and the receiving sleeve (6).

3. The lens surface finish testing device according to claim 2, characterized in that: It also includes a locking mechanism (7); The locking mechanism (7) includes a locking cylinder (701), a locking rod (702), a locking spring (703), a fixing plate (704), and a guide plate (705). The locking cylinder (701) is fixed to the support frame (2) and has a receiving cavity. One end of the locking rod (702) extends out of the receiving cavity through the opening of the support frame (2) and passes through the support frame (2). The fixing plate (704) is fixed to the locking rod (702). The guide plate (705) is fixed to the receiving cavity and has a guide hole for the locking rod (702) to pass through. The locking spring (703) is sleeved on the locking rod (702) and located between the fixing plate (704) and the guide plate (705). The receiving sleeve (6) has a locking groove (602) corresponding to the locking rod (702).

4. The lens surface finish testing device according to claim 3, characterized in that: The end of the locking rod (702) facing away from the locking cylinder (701) is hemispherical, and the locking groove (602) is hemispherical.

5. The lens surface finish testing device according to claim 3, characterized in that: The number of locking mechanisms (7) is multiple, and the multiple locking mechanisms (7) are arranged at intervals along the circumference of the rotating column (201).

6. The lens surface finish testing device according to claim 3, characterized in that: The number of locking grooves (602) is multiple, and the multiple locking grooves (602) are arranged at intervals along the circumference of the rotating column (201).

7. The lens surface finish testing device according to claim 1, characterized in that: The lower surface of the base (1) is provided with a support column (102).

8. The lens surface finish testing device according to claim 1, characterized in that: The storage frame (3) is provided with a fixing component (8); The fixing component (8) includes a fixing frame (801), a sleeve (802), a screw (803), and a hand-tightening nut. The sleeve (802) is rotatably connected to the fixing frame (801), the screw (803) is fixedly connected to the sleeve (802), and the hand-tightening nut is threadedly connected to the screw (803). The base plate (4) is fixedly connected to a positioning plate (10). The positioning plate (10) has two opposite ends along its own length direction, each provided with a snap-fit ​​ear plate (11) corresponding to the screw (803).

9. The lens surface finish testing device according to claim 8, characterized in that: The positioning plate (10) is provided with a handle (9).

10. The lens surface finish testing device according to claim 1, characterized in that: The cover plate (5) is provided with a positioning pin (503), and the base plate (4) is provided with a positioning groove (403) corresponding to the positioning pin (503).

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