Optical lens testing instrument and optical lens testing method

Abstract

The invention discloses an optical lens testing instrument and an optical lens testing method, and belongs to the technical field of optical testing instruments.The optical lens testing instrument comprises an area light source assembly, a target assembling assembly, an optical lens placing assembly and an optical sensor placing assembly, a test target, a tested lens and an optical sensor can be sequentially arranged on a transmission path of test light rays emitted by the area light source; the test target is mounted on the target assembling component, and the target assembling component is used for driving the test target to move in or out of the transmission path; a tested lens is placed on the optical lens placing assembly, and the optical lens placing assembly is used for adjusting the position of the tested lens; the optical sensor is installed on the optical sensor placing assembly, and the optical sensor placing assembly is used for adjusting the position of the optical sensor. According to the invention, the operation steps in the test process of the tested lens can be simplified, the test precision is improved, the yield is improved, and the standardized quality control requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of optical test instruments, and particularly to an optical lens test instrument and an optical lens test method. Background Art

[0002] In recent years, with the rapid development of technology, lens modules, as the core components of optical imaging, have been widely used in key fields such as smartphones, medical devices, security monitoring, and vehicle-mounted imaging. In the smartphone industry, the imaging quality of lens modules directly determines the clarity and color reproduction ability of the captured images, becoming an important indicator for consumers to choose. In the medical field, devices such as endoscopes and microscopes rely on high-precision lens modules to achieve accurate observation and diagnosis of lesions, and their resolution and reliability are even related to the safety of patients' lives. Therefore, the market has put forward almost stringent requirements for the performance and quality of lens modules, and it is urgent to ensure the compliance of their optical performance through efficient and accurate testing methods.

[0003] However, the current mainstream lens resolution test devices and methods have exposed many technical bottlenecks in practical applications, seriously restricting the improvement of test efficiency and product yield, and the specific manifestations are as follows: Complicated operation and low efficiency When the existing test devices perform resolution tests, they need to rely on manual adjustment of the test distance frequently to match the best imaging position of the lens. Especially for lenses that require spiral focusing, the operator must rotate the lens repeatedly within the millimeter range and observe the imaging effect with the naked eye to determine the optimal focal length. This process is not only cumbersome, but also because of the extremely high requirement for focusing accuracy, it often takes a lot of time to repeat fine-tuning, resulting in a significant extension of the test cycle. In addition, manual operation is difficult to ensure the consistency of each adjustment, and it is easy to introduce human errors, affecting the repeatability and accuracy of the test results.

[0004] The risk of damaged yield is prominent For short object distance lenses (such as wide-angle or macro lenses), their best test distance is extremely close (usually only a few millimeters), and the operator needs to manually adjust with the help of tweezers or wearing gloves in a narrow space. Since the force application angle and force are difficult to standardize, it is very easy to cause scratches on the lens barrel, thread wear, or even optical element offset due to mechanical friction or extrusion. Such hidden damages not only reduce the assembly accuracy of the lens, but also may cause optical axis deviation or imaging distortion during subsequent use, ultimately affecting the overall yield of the module.

[0005] In addition, traditional resolution determination is often based on subjective visual evaluation, which is easily affected by the operator's experience and cannot meet the requirements of standardized quality control.

[0006] To sum up, the existing lens resolution test technologies have inherent defects such as redundant operation, limited accuracy, and yield loss. Summary of the Invention

[0007] The object of the present invention is to provide an optical lens testing instrument and an optical lens testing method to solve the problems existing in the above-mentioned prior art. By the cooperative movement of a surface light source assembly, a target assembly, an optical lens placement assembly, and an optical sensor placement assembly, the relative positions of the surface light source, the test target, the lens under test, and the optical sensor can be adjusted, which can simplify the operation steps, improve the test accuracy, increase the yield rate, and meet the requirements of standardized quality control.

[0008] To achieve the above object, the present invention provides the following solutions: The present invention provides an optical lens testing instrument, including a surface light source assembly, a target assembly, an optical lens placement assembly, and an optical sensor placement assembly. The surface light source assembly includes a surface light source. A test target, a lens under test, and an optical sensor can be sequentially arranged on the transmission path of the test light rays emitted by the surface light source. The test target is installed on the target assembly, and the target assembly is used to drive the test target to move into or out of the transmission path. The lens under test is placed on the optical lens placement assembly, and the optical lens placement assembly is used to adjust the position of the lens under test. The optical sensor is installed on the optical sensor placement assembly, and the optical sensor placement assembly is used to adjust the position of the optical sensor.

[0009] In an embodiment, it further includes a base and a bracket. The bracket includes two columns, and the two columns are arranged in parallel at intervals on the base. The two ends of the surface light source assembly are respectively connected to the two columns, the two ends of the target assembly are respectively connected to the two columns, and both the optical lens placement assembly and the optical sensor placement assembly are installed on the base between the two columns.

[0010] In an embodiment, it further includes a guide rail. The guide rail is arranged on the column, and the extending direction of the guide rail is the same as that of the column. The surface light source assembly further includes a first adjustment knob and a first buckle respectively arranged at the two ends of the surface light source. The first adjustment knob is connected to the guide rail on one of the columns, and the first buckle is connected to the guide rail on the other column. The first adjustment knob is used to adjust the position on the guide rail, and the first buckle is used to lock the position on the guide rail.

[0011] In an embodiment, the target assembly includes a target assembly body and a second adjustment knob and a second buckle respectively arranged at the two ends of the target assembly body. The second adjustment knob is connected to the guide rail on one of the columns, and the second buckle is connected to the guide rail on the other column. The second adjustment knob is used to adjust the position on the guide rail, and the second buckle is used to lock the position on the guide rail.

[0012] In one embodiment, the target assembly component further includes a transverse sliding rail and a transverse sliding block slidably disposed on the transverse sliding rail. The transverse sliding rail is perpendicular to the guide rail. The second adjustment knob and the second buckle are respectively connected to the transverse sliding rail. Both ends of the target assembly body are respectively connected to the transverse sliding block.

[0013] In one embodiment, the optical lens placement component includes an optical lens placement platform, an L-shaped frame body, and a first three-axis moving stage. The fixed end of the first three-axis moving stage is installed on the base. The vertical arm of the L-shaped frame body is connected to the optical lens placement platform. The horizontal arm of the L-shaped frame body is connected to the execution end of the first three-axis moving stage.

[0014] In one embodiment, the optical sensor placement component includes an optical sensor placement platform, a mounting plate, and a second three-axis moving stage. The fixed end of the second three-axis moving stage is installed on the base. The optical sensor placement platform is connected to the execution end of the second three-axis moving stage through the mounting plate.

[0015] In one embodiment, the optical lens placement platform includes a bottom plate and a side plate. The bottom plate is provided with a lens placement hole which is in a stepped shape. The side plate is connected to the side of the bottom plate close to the optical sensor. The space enclosed by the side plate is used to accommodate the optical sensor placement platform, and the side plate is used as a light shield.

[0016] In one embodiment, it further includes an outer frame and light-shielding cotton. After the light-shielding cotton covers the outer frame, a light-shielding cover is formed. The surface light source component, the target assembly component, the optical lens placement component, and the optical sensor placement component are all located inside the light-shielding cover.

[0017] The present invention also provides an optical lens testing method, which is applied to the optical lens testing instrument described above, and includes the following steps: S1. Confirm that the surface light source component and the target assembly component are in a horizontal state; S2. Paste the test target below the target assembly component; S3. Turn on the surface light source component and use the surface light source component to irradiate the test target; S4. Place the lens to be tested on the optical lens placement component; S5. Adjust the optical lens placement component to adjust the lens to be tested to the test position, and ensure that the lens to be tested is aligned with the test target; S6. Place the optical sensor on the optical sensor placement platform and start the optical sensor. By adjusting the optical sensor placement platform, align the optical sensor with the lens under test, and adjust the distance between the optical sensor and the lens under test to the test position; S7. Record the image data received by the optical sensor.

[0018] The present invention has achieved the following technical effects compared with the prior art: The present invention utilizes the coordinated movement of the surface light source assembly, the target assembly component, the optical lens placement component, and the optical sensor placement component to adjust the relative positions among the surface light source, the test target, the lens under test, and the optical sensor, which can simplify the operation steps during the test of the lens under test, avoid the influence of the operator's subjective visual evaluation, and is no longer affected by the operator's experience. It can improve the test accuracy. At the same time, it no longer directly manually adjusts the lens under test, improves the yield rate, and meets the requirements of standardized quality control. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is the front view of the optical lens testing instrument in the embodiment of the present invention; Figure 2 It is the three-dimensional view of the optical lens testing instrument in the embodiment of the present invention; Figure 3 It is the sectional view of the optical lens placement platform and the optical sensor placement platform in the embodiment of the present invention; Figure 4 It is the exploded structure schematic diagram of the optical lens testing instrument in the embodiment of the present invention; Among them, 1. Base; 2. Bracket; 3. Guide rail; 4. Surface light source assembly; 5. Target assembly component; 6. Optical lens placement component; 7. Optical sensor placement component; 8. Outer frame; 9. Light-shielding cotton; 41. Surface light source; 42. First adjustment knob; 43. First buckle; 51. Target assembly body; 52. Second adjustment knob; 53. Second buckle; 54. Transverse sliding rail; 55. Transverse sliding block; 56. Limit post; 57. Handle; 61. Optical lens placement platform; 62. L-shaped frame body; 63. First three-axis moving platform; 611. Bottom plate; 6111. Lens placement hole; 612. Side plate; 71. Optical sensor placement platform; 72. Mounting plate; 73. Second three-axis moving stage; 74. Optical sensor. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The purpose of the present invention is to provide an optical lens testing instrument and an optical lens testing method to solve the problems existing in the prior art. By the coordinated movement of the surface light source assembly, the target assembly, the optical lens placement assembly, and the optical sensor placement assembly, the relative positions of the surface light source, the test target, the lens under test, and the optical sensor can be adjusted, which can simplify the operation steps, improve the test accuracy, increase the yield rate, and meet the requirements of standardized quality control.

[0023] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0024] As Figures 1 to 4As shown in the figure, the present invention provides an optical lens testing instrument, which includes a surface light source assembly 4, a target assembly 5, an optical lens placement assembly 6, and an optical sensor placement assembly 7. The surface light source assembly 4 includes a surface light source 41. The test light rays emitted by the surface light source 41 can cover a certain area range, at least covering the area of the target assembly 5. And, as needed, the surface light source 41 can adjust the intensity of the test light rays. On the transmission path of the test light rays emitted by the surface light source 41, a test target, a lens under test, and an optical sensor 74 can be sequentially arranged. During the test process, the test light rays emitted by the surface light source 41 reach the lens under test through the test target, and then are transmitted to the optical sensor 74 for detection. The test target is installed on the target assembly 5. The target assembly 5 is used to drive the test target to move into or out of the transmission path of the test light rays. On the one hand, after moving out of the transmission path, there is no other obstruction between the surface light source 41 and the lens under test, and the surface light source 41 can be directly used to irradiate the lens under test to observe whether there is dirt or scratches on the image. On the other hand, after moving into the transmission path, the test target is located in the propagation path of the test light rays, and the resolution of the lens under test can be observed by using the test target. Therefore, by moving the target assembly 5 into and out of, the detection of different lenses under test can be realized. When testing different lenses under test, each time a lens under test is replaced, the target assembly 5 is moved once. The lens under test is placed on the optical lens placement assembly 6. The optical lens placement assembly 6 is used to adjust the position of the lens under test. The optical sensor 74 is installed on the optical sensor placement assembly 7. The optical sensor placement assembly 7 is used to adjust the position of the optical sensor 74. Through the adjustment of the optical lens placement assembly 6 and the optical sensor placement assembly 7, the positions of the lens under test and the optical sensor 74 can be adjusted to meet the test requirements.

[0025] The present invention realizes the adjustment of the relative positions among the surface light source 41, the test target, the lens under test, and the optical sensor 74 by the coordinated movement of the surface light source assembly 4, the target assembly 5, the optical lens placement assembly 6, and the optical sensor placement assembly 7, which can simplify the operation steps during the test of the lens under test, avoid the influence of the operator's subjective visual evaluation, and is no longer affected by the operator's experience, can improve the test accuracy. At the same time, the lens under test is no longer directly manually adjusted, which improves the yield rate and meets the requirements of standardized quality control.

[0026] In an embodiment, as Figure 1 and Figure 2As shown, it further includes a base 1 and a bracket 2. The base 1 is used to be placed on a workbench or a test bench. The base 1 can be set as a plate shape or a block shape. The bracket 2 includes two columns, and the two columns are arranged in parallel at intervals on the base 1. The base 1 serves as the bearing structure of the columns, which is used to ensure the stable installation of the columns, so as to stably support the components installed on the columns by using the columns. The two ends of the surface light source assembly 4 are respectively connected to the two columns, and the columns are used to support the surface light source assembly 4 to maintain the position and orientation of the test light rays emitted by the surface light source 41. The two ends of the target assembly 5 are respectively connected to the two columns, and the columns are used to keep the position of the test target meeting the requirements. The optical lens placement assembly 6 and the optical sensor placement assembly 7 are both installed on the base 1 between the two columns, and the base 1 is used to install and position the optical lens placement assembly 6 and the optical sensor placement assembly 7. Thus, the surface light source assembly 4 and the target assembly 5 form a group, and the optical lens placement assembly 6 and the optical sensor placement assembly 7 form a group. The two groups of structures adopt different installation methods, and are reasonably arranged in combination with the characteristics of each structure and the required positions, which simplifies the structure and ensures the operability.

[0027] In one embodiment, as Figure 1 and Figure 2 shown, it further includes a guide rail 3. The guide rail 3 is arranged on the columns of the bracket 2, and the extending direction of the guide rail 3 is the same as that of the columns. While supporting the structures installed on the bracket 2, it can also enable the installed structures to adjust their positions in the extending direction of the columns. The surface light source assembly 4 further includes a first adjustment knob 42 and a first buckle 43 respectively arranged at the two ends of the surface light source 41. The first adjustment knob 42 is connected to the guide rail 3 on one of the columns. The first adjustment knob 42 can slide on the guide rail 3 and can adjust the sliding position. The first buckle 43 is connected to the guide rail 3 on the other column. The first buckle 43 can slide on the guide rail 3 and move synchronously with the surface light source 41 and the first adjustment knob 42. By locking the first buckle 43, the position on the guide rail 3 can be locked, and then the position of the surface light source 41 can be locked. Thus, through the setting of the first adjustment knob 42 and the first buckle 43, the position on the guide rail 3 can be conveniently adjusted, and the position on the guide rail 3 can be conveniently locked, and finally the position adjustment of the surface light source 41 is realized.

[0028] In one embodiment, as Figure 1 and Figure 2As shown, the target assembly component 5 includes a target assembly body 51, a second adjustment knob 52 and a second buckle 53 respectively arranged at both ends of the target assembly body 51. The second adjustment knob 52 is connected to the guide rail 3 on one of the columns. The second adjustment knob 52 can slide on the guide rail 3 and can adjust the sliding position. The second buckle 53 is connected to the guide rail 3 on the other column. The second buckle 53 can slide on the guide rail 3 and move synchronously with the target assembly body 51 and the second adjustment knob 52. By locking the second buckle 53, the position on the guide rail 3 can be locked, and then the position of the target assembly body 51 can be locked. Thus, through the settings of the second adjustment knob 52 and the second buckle 53, the position on the guide rail 3 can be conveniently adjusted and locked, and finally the position adjustment of the test target installed on the target assembly body 51 can be realized.

[0029] In one embodiment, as Figure 1 and Figure 2 shown, the target assembly component 5 further includes a transverse sliding rail 54 and a transverse sliding block 55 slidably arranged on the transverse sliding rail 54. The transverse sliding rail 54 is perpendicular to the guide rail 3, that is, when the guide rail 3 is arranged vertically, the transverse sliding rail 54 is arranged horizontally. The second adjustment knob 52 and the second buckle 53 are respectively connected to the transverse sliding rail 54. Both ends of the target assembly body 51 are respectively connected to the transverse sliding block 55. Through the cooperation of the transverse sliding rail 54 and the guide rail 3, the horizontal and vertical adjustment of the target assembly body 51 within the space range can be realized. On the one hand, the distance between the test target and the surface light source 41 and the measured lens can be adjusted. On the other hand, the test target can be moved out of the path of the test light of the surface light source 41 to achieve the purpose of observing whether there is dirt or scratches on the imaging and observing the resolution of the lens.

[0030] In one embodiment, a limit post 56 and a handle 57 can also be provided. Taking the transverse sliding rail 54 and the transverse sliding block 55 connected to the second adjustment knob 52 as an example, the transverse sliding rail 54 is connected to the second adjustment knob 52 through a first connecting plate, and the transverse sliding block 55 is connected to the target assembly body 51 through a second connecting plate. The limit post 56 is arranged on the first connecting plate, and the second connecting plate or the transverse sliding block 55 is connected with the handle 57. By pushing and pulling the handle 57, the position of the target assembly body 51 on the transverse sliding rail 54 can be manually adjusted, and the position is limited by the limit post 56 to prevent the transverse sliding block 55 from detaching from the transverse sliding rail 54. Of course, on the side where the second buckle 53 is arranged, a limit post 56 and a handle 57 can also be provided, and the setting method refers to the above description. It should be noted that: the limit post 56 and the handle 57 can be both arranged on one side of the second adjustment knob 52, or both arranged on one side of the second buckle 53, or both arranged on both sides. In addition, the limit post 56 and the handle 57 can also be respectively arranged on one side of the second adjustment knob 52 and one side of the second buckle 53.

[0031] By providing the limit posts 56 and the handle 57, it is possible to prevent the operator from directly contacting the lens under test, thereby reducing physical damage to the lens under test, ensuring that the yield of the lens under test is not affected during the testing process, and at the same time, improving the accuracy and efficiency of the testing.

[0032] In one embodiment, as Figure 1 and Figure 2 shown, the optical lens placement assembly 6 includes an optical lens placement platform 61, an L-shaped frame 62, and a first three-axis moving stage 63. Among them, the first three-axis moving stage 63 can adopt a conventional three-axis moving stage and can move in the X, Y, and Z directions in the space coordinates. The fixed end of the first three-axis moving stage 63 is installed on the base 1, and the base 1 is used to install and fix the first three-axis moving stage 63. The vertical arm of the L-shaped frame 62 is connected to the optical lens placement platform 61, and the horizontal arm of the L-shaped frame 62 is connected to the actuator end of the first three-axis moving stage 63. Thus, the optical lens placement platform 61 can be extended to the lateral outer area of the first three-axis moving stage 63, and further, the optical lens placement platform 61 can be located above the optical sensor 74.

[0033] By moving the optical lens placement platform 61 through the first three-axis moving stage 63, not only can the optical lens placement assembly 6 be independently fine-tuned from the bracket 2, enabling higher-precision alignment and positioning, but also it effectively avoids unnecessary vibrations of the optical lens placement platform 61 caused by the shaking of the bracket 2 during the movement of the test target.

[0034] In one embodiment, as Figures 1 to 3 shown, the optical sensor placement assembly 7 includes an optical sensor placement platform 71, a mounting plate 72, and a second three-axis moving stage 73. Among them, the second three-axis moving stage 73 can adopt a conventional three-axis moving stage and can move in the X, Y, and Z directions in the space coordinates, and can have the same or different structures of the three-axis moving stage as the first three-axis moving stage 63. The fixed end of the second three-axis moving stage 73 is installed on the base 1, and the base 1 is used to install and fix the second three-axis moving stage 73. The optical sensor placement platform 71 is connected to the actuator end of the second three-axis moving stage 73 through the mounting plate 72. By controlling the movement of the second three-axis moving stage 73, the optical sensor 74 can be moved to the required position, that is, on the side of the lens under test away from the test target.

[0035] By moving the optical sensor placement platform 71 through the second three-axis moving stage 73, not only can the optical sensor placement assembly 7 be independently fine-tuned from the bracket 2, enabling higher-precision alignment and positioning, but also it effectively avoids unnecessary vibrations of the optical sensor placement platform 71 caused by the shaking of the bracket 2 during the movement of the test target.

[0036] In one embodiment, as Figures 1 to 3 shown, the optical lens placement platform 61 includes a bottom plate 611 and side plates 612. The bottom plate 611 is provided with a lens placement hole 6111, and the lens placement hole 6111 is stepped, which can be used to place the lens to be measured. In addition, each step of the stepped lens placement hole 6111 can have precise size and angle designs to be able to stably place the lens to be measured. Through this stepped design, the lens to be measured can be effectively supported and kept in a stable and proper position, avoiding affecting the normal operation of the lens to be measured due to shaking or other factors. The side plates 612 are connected to the side of the bottom plate 611 close to the optical sensor 74, and a plurality of side plates 612 enclose a circle. The space enclosed by the side plates 612 can be used to accommodate the optical sensor placement platform 71. At this time, the optical sensor 74 can be located in the enclosed space, and the side plates 612 are used as light-shielding plates to meet the light-shielding requirements.

[0037] At the same time, in order to adapt to different types and sizes of lenses to be measured, the optical lens placement platform 61 can be customized and replaced according to the shapes of different lenses to be measured. Users can select suitable shapes and sizes according to actual needs, which not only improves the compatibility of the device but also greatly facilitates the use requirements of users in different application scenarios.

[0038] In one embodiment, as Figure 4 shown, it further includes an outer frame 8 and light-shielding cotton 9. The outer frame 8 can be made of metal material, dark or black, with a smooth surface and good corrosion resistance. The light-shielding cotton 9 covers the outer frame 8 to form a light-shielding cover, which can effectively block the entry of external light and create a stable dark environment for high-precision optical testing. The outer frame 8 can adopt a rectangular frame, and the overall structure of the rectangular frame should be larger than the bracket 2 installed on the base 1 so that the light-shielding cover can cover the corresponding structure, making the surface light source assembly 4, the target assembly 5, the optical lens placement assembly 6, and the optical sensor placement assembly 7 all located inside the light-shielding cover. Through the design of the combined frame of the outer frame 8 and the light-shielding cotton 9, not only can the optical lens testing instrument effectively reduce the interference of external light and ensure the stability of the testing environment, but also the cost can be effectively reduced.

[0039] The optical lens testing instrument of the present invention has a bracket 2 provided on a base 1. A surface light source assembly 4 and a target assembly component 5 are both arranged on the upright column of the bracket 2. An optical lens placement component 6 and an optical sensor placement component 7 are both arranged on the base 1. The target assembly component 5 is located directly below the surface light source assembly 4, and the optical lens placement component 6 is located directly above the optical sensor placement component 7. The target assembly component 5 is equipped with a handle 57. It has the characteristics of simple and convenient operation and fast testing speed. During operation, the surface light source 41 is fixed to the surface light source assembly 4, the test target is fixed to the target assembly component 5, and the optical sensor 74 is installed on the optical sensor placement component 7. Only need to clamp the lens under test on the optical lens placement platform 61, and by adjusting the second three-axis moving stage 73 connected to the optical sensor 74, control the distance between the optical sensor 74 and the lens under test to obtain the best imaging position, effectively saving the testing time and reducing the damage to the lens under test.

[0040] Refer again to Figures 1 to 4 As shown, the present invention also provides an optical lens testing method, which applies the optical lens testing instrument described above, including the following content: S1. Confirm that the surface light source assembly 4 and the target assembly component 5 are in a horizontal state; S2. Paste the test target below the target assembly component 5, that is, below the target assembly body 51; S3. Turn on the surface light source assembly 4, and use the test light emitted by the surface light source 41 of the surface light source assembly 4 to irradiate the test target; S4. Place the lens under test on the optical lens placement platform 61 of the optical lens placement component 6; S5. Adjust the optical lens placement component 6 to adjust the lens under test to the test position, and ensure that the lens under test is aligned with the test target; S6. Place the optical sensor 74 on the optical sensor placement platform 71 and start the optical sensor 74. By adjusting the optical sensor placement platform 71, align the optical sensor 74 with the lens under test, and adjust the distance between the optical sensor 74 and the lens under test to the test position; S7. Record the image data received by the optical sensor 74.

[0041] In step S1, first start the optical lens testing instrument and perform a system self-check. Move the surface light source assembly 4 through the first adjustment knob 42, and move the target assembly component 5 through the second adjustment knob 52, so that the surface light source assembly 4 and the target assembly component 5 reach the test position, and then lock the first buckle 43 and the second buckle 53 to confirm that the surface light source assembly 4 and the target assembly component 5 remain in a horizontal state.

[0042] In step S5, the optical lens is adjusted to an appropriate position by controlling the first three-axis moving stage 63 to ensure that the lens under test is aligned with the test target.

[0043] In step S6, the optical sensor 74 is placed on the optical sensor placement platform 71 and the optical sensor 74 is activated. By controlling the second three-axis moving stage 73, the optical sensor 74 is aligned with the lens under test.

[0044] In step S7, after the image data is obtained, the image data is analyzed to evaluate the imaging quality and optical characteristics of the lens under test, and the test results are output.

[0045] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An optical lens testing instrument, characterized in that: include: A surface light source assembly, the surface light source assembly comprising a surface light source, and a test target, a lens to be tested and an optical sensor can be sequentially arranged on a transmission path of a test light emitted by the surface light source; A target assembly component, the test target is mounted on the target assembly component, and the target assembly component is used to drive the test target to move into or out of the transmission path; An optical lens placement component, the lens to be tested is placed on the optical lens placement component, and the optical lens placement component is used to adjust the position of the lens to be tested; and an optical sensor placement component, the optical sensor is mounted on the optical sensor placement component, and the optical sensor placement component is used to adjust the position of the optical sensor.

2. The optical lens testing instrument according to claim 1, characterized in that: It also includes a base and a bracket, the bracket includes two columns, the two columns are arranged in parallel and spaced apart on the base, the two ends of the surface light source component are respectively connected to the two columns, the two ends of the target assembly component are respectively connected to the two columns, and the optical lens placement component and the optical sensor placement component are both installed on the base between the two columns.

3. The optical lens testing instrument according to claim 2, characterized in that: It also includes a guide rail, which is arranged on the column, and the extension direction of the guide rail is the same as the extension direction of the column. The surface light source assembly also includes a first adjustment knob and a first buckle respectively arranged at both ends of the surface light source, the first adjustment knob is connected to the guide rail on one of the columns, and the first buckle is connected to the guide rail on the other column. The first adjustment knob is used to adjust the position on the guide rail, and the first buckle is used to lock the position on the guide rail.

4. The optical lens testing instrument according to claim 3, characterized in that: The target assembly assembly includes a target assembly body and a second adjustment knob and a second buckle respectively arranged at both ends of the target assembly body, the second adjustment knob is connected to the guide rail on one of the columns, the second buckle is connected to the guide rail on the other column, the second adjustment knob is used to adjust the position on the guide rail, and the second buckle is used to lock the position on the guide rail.

5. The optical lens testing instrument according to claim 4, characterized in that: The target assembly assembly also includes a transverse slide rail and a transverse slider slidably arranged on the transverse slide rail, the transverse slide rail is perpendicular to the guide rail, the second adjustment knob and the second buckle are respectively connected to the transverse slide rail, and the two ends of the target assembly body are respectively connected to the transverse slider.

6. The optical lens testing instrument according to claim 2, characterized in that: The optical lens placement assembly includes an optical lens placement platform, an L-shaped frame and a first three-axis movable platform, wherein the fixed end of the first three-axis movable platform is installed on the base, the vertical arm of the L-shaped frame is connected to the optical lens placement platform, and the horizontal arm of the L-shaped frame is connected to the execution end of the first three-axis movable platform.

7. The optical lens testing instrument according to claim 6, characterized in that: The optical sensor placement assembly includes an optical sensor placement platform, a mounting plate and a second three-axis movable table, wherein the fixed end of the second three-axis movable table is mounted on the base, and the optical sensor placement platform is connected to the execution end of the second three-axis movable table through the mounting plate.

8. The optical lens testing instrument according to claim 7, characterized in that: The optical lens placement platform includes a bottom plate and a side plate. The bottom plate is provided with a lens placement hole, and the lens placement hole is stepped. The side plate is connected to a side of the bottom plate close to the optical sensor. The space enclosed by the side plate is used to accommodate the optical sensor placement platform, and the side plate is used as a light shielding plate.

9. The optical lens testing instrument according to claim 1, characterized in that: It also includes an outer frame and light-shielding cotton. The light-shielding cotton covers the outer frame to form a light-shielding cover. The surface light source component, the target assembly component, the optical lens placement component and the optical sensor placement component are all located inside the light-shielding cover.

10. An optical lens testing method, characterized in that: The optical lens testing instrument according to any one of claims 1 to 9 is used, comprising the following contents: S1. Confirm that the surface light source assembly and the target assembly assembly are in a horizontal state; S2, pasting the test target to the bottom of the target assembly component; S3, turning on the surface light source assembly, and using the surface light source assembly to illuminate the test target; S4, placing the lens to be tested on the optical lens placement assembly; S5, adjusting the optical lens placement assembly to adjust the tested lens to a test position, ensuring that the tested lens is aligned with the test target; S6, placing an optical sensor on an optical sensor placement platform and starting the optical sensor, adjusting the optical sensor placement platform so that the optical sensor is aligned with the lens under test, and adjusting the distance between the optical sensor and the lens under test to a test position; S7. Record the image data received by the optical sensor.

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