AR lens detection equipment

Abstract

The AR lens detection equipment comprises a base table, a carrying table, a position sensor, a light source generation module, a polarization spectroscope, a polaroid and a camera, the carrying table can move relative to the base table in the first direction, the second direction and the third direction, the carrying table is provided with a feeding and discharging station, a position calibration station and a testing station in the first direction, and every two of the first direction, the second direction and the third direction are perpendicular to each other. When a product is tested, the carrying table is located at a testing station, the light source generation module and the polarization spectroscope are sequentially arranged in the second direction, and the product to be tested, the polaroid, the polarization spectroscope and the camera are sequentially arranged in the third direction. The polarization spectroscope can change the light path of the light source generation module, so that even if the light source generation module does not directly face the carrying table, light emitted by the light source generation module can still be reflected by the polarization spectroscope and then directly face the carrying table to be incident, and illumination at all positions of the carrying table is uniform.

Description

Technical Field

[0001] The present application relates to the field of AR lens detection technology, and in particular to an AR lens detection device. Background Art

[0002] With the widespread application of augmented reality (AR) technology in smart wearables, education and training, industrial maintenance, and other fields, the performance of AR display chips, as core components for achieving the fusion of virtual and real life, directly determines the display quality and user experience of terminal devices. Because AR display chips must accurately overlay virtual images on real scenes, the operating process places extremely stringent requirements on parameters such as the uniformity of detection lighting and polarization characteristics. For example, to ensure that the image has no differences in brightness and ghosting, the spatial uniformity of the detection light source must reach above 98%, and the extinction ratio of polarized light must exceed 1000:1.

[0003] However, the current display chip testing equipment on the market is mostly designed for traditional LCD, OLED, and other types, making it difficult to meet the special needs of AR display chips. Existing testing equipment suffers from the following technical flaws: First, the optical path design is difficult to adapt to the testing requirements of AR display chips. The conventional lighting systems used by traditional equipment cannot accurately control the intensity and angle of polarized light, and the light source uniformity can only reach approximately 85%, resulting in a significant deviation between the test data and the actual chip performance. Second, the testing functions are scattered. Multiple performance indicators such as uniformity, contrast, and reflectivity must be tested in stages using different equipment. This not only consumes a lot of manpower and time, but also easily damages the chip during multiple disassembly and assembly. Third, the level of automation is low. Existing equipment lacks an integrated testing system, and cannot achieve full automation of the entire process from optical path adjustment and parameter detection to data processing, making it difficult to meet the efficient quality inspection needs of AR display chip mass production.

[0004] At present, there is no mature testing equipment specifically designed for the high lighting requirements of AR display chips. The limitations of existing technologies have seriously restricted the production efficiency and product quality of AR display chips. There is an urgent need to develop an integrated, automated testing equipment with precise optical path control capabilities to solve the above technical problems. Summary of the Invention

[0005] An embodiment of the present application provides an AR lens detection device that can calibrate the position of a product to be tested, thereby improving detection accuracy.

[0006] In a first aspect, an embodiment of the present application provides an AR lens testing device, the AR lens testing device including a base, a carrier, a position sensor, a light source generating module, a polarization beam splitter, a polarizer, and a camera;

[0007] The carrier is used to carry the product to be tested, and the carrier can move relative to the base along a first direction, a second direction, and a third direction. The carrier has a loading and unloading station, a position calibration station, and a testing station in the first direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0008] The position sensor is provided corresponding to the position calibration station, and the position sensor is used to detect the distance between the position sensor and the product to be measured;

[0009] The light source generating module, the polarizer, the polarization beam splitter and the camera are all arranged at corresponding test stations; when conducting product testing, the carrier is located at the test station, the light source generating module and the polarization beam splitter are arranged in sequence along the second direction, and the product to be tested, the polarizer, the polarization beam splitter and the camera are arranged in sequence along the third direction.

[0010] In some exemplary embodiments, the AR lens detection device further includes a collimator, the light source generating module, the polarization beam splitter and the collimator are arranged sequentially along the second direction, and the collimator is used to provide collimation correction when the device is adjusted.

[0011] In some exemplary embodiments, the AR lens detection equipment also includes a first adjustment mechanism and a supporting member installed on the first adjustment mechanism, the position adjustment mechanism is arranged on the base, the supporting member extends between the polarization spectrometer and the product to be tested, the polarizer is arranged on the supporting member, and the first adjustment mechanism is used to adjust the movement of the polarizer along the first direction, the second direction and the third direction, and to adjust the parallelism between the polarizer and the product to be tested.

[0012] In some exemplary embodiments, the AR lens testing device further includes a second adjustment mechanism, the second adjustment mechanism including a first movable assembly, a second movable assembly, and a third movable assembly, the first movable assembly being movably disposed on the base along a first direction, the second movable assembly being movably disposed on the first movable assembly along a second direction, the third movable assembly being movably disposed on the second movable assembly along a third direction, and the carrier being disposed on the third movable assembly;

[0013] The second adjustment mechanism also includes a first substrate, a first adjustment plate, three first adjustment screws and a first elastic support member arranged between the first substrate and the first adjustment member. The first substrate is arranged horizontally and fixedly connected to the output end of the third moving component. The carrier is fixedly connected to the first adjustment plate. The three first adjustment screws are all in contact with the first substrate and are all screwed to the second adjustment plate. The three first adjustment screws are arranged in a triangle. By adjusting the distance between the three points between the first substrate and the first adjustment plate, the horizontality of the first adjustment plate can be adjusted.

[0014] In some exemplary embodiments, the AR lens detection equipment further includes a crimping mechanism and an image signal generator, wherein the crimping mechanism moves synchronously with the carrier, the crimping mechanism is used to connect the product to be tested with the image signal generator, and the image signal generator is used to illuminate the product to be tested.

[0015] In some exemplary embodiments, the AR lens detection equipment further includes a third adjustment mechanism, wherein the third adjustment mechanism is disposed on the base, and the camera is disposed on the third adjustment mechanism, and the third adjustment mechanism is used to adjust the camera to move along the third direction, rotate around the first direction, and rotate around the second direction.

[0016] In some exemplary embodiments, the AR lens testing device further includes a fourth adjustment mechanism, the fourth adjustment mechanism including a first rotating assembly, a second rotating assembly, and a fourth movable assembly, the light source generating module is disposed on the first rotating assembly, the first rotating assembly is used to drive the light source generating module to rotate about the second direction, the fourth movable assembly is connected to the first rotating assembly, the fourth movable assembly is used to adjust the light source generating module to move along the first direction, the second rotating assembly is connected to the fourth movable assembly, the second rotating assembly is used to drive the light source generating module to rotate about the third direction;

[0017] The light source generating module includes a light source and a lens barrel. The light source is movably disposed on the first rotating assembly along a first direction, and the lens barrel is fixedly disposed on the first rotating assembly.

[0018] In some exemplary embodiments, the AR lens detection equipment further includes a fifth adjustment mechanism, which is disposed on the base, and the polarization spectrometer is installed on the fifth adjustment mechanism, and the fifth adjustment mechanism is used to adjust the polarization spectrometer to move along the third direction, rotate around the first direction, rotate around the second direction, and rotate around the third direction.

[0019] In some exemplary embodiments, the AR lens detection equipment also includes a second substrate, a second adjustment plate, three second adjustment screws and a second elastic support member arranged between the second substrate and the second adjustment member. The second substrate is vertically arranged and fixedly connected to the output end of the fifth adjustment mechanism. The polarization spectrometer is fixedly connected to the second adjustment plate. The three second adjustment screws are all in contact with the second substrate and are screwed to the second adjustment plate. The three second adjustment screws are arranged in a triangle. The verticality of the second adjustment plate can be adjusted by adjusting the distance between the three points between the second substrate and the second adjustment plate.

[0020] In some exemplary embodiments, the light source generating module includes a red light source, a green light source, a blue light source and a cubic prism, and the red light source, the green light source and the blue light source are respectively arranged corresponding to the three incident surfaces of the cubic prism, so that the three colors of light are mixed into white light.

[0021] Beneficial effects:

[0022] 1. The AR lens detection equipment of the embodiment of the present application is provided with a polarization beam splitter, which can change the optical path of the light source generating module, so that even if the light source generating module is not facing the carrier, the light emitted by the light source generating module can still be reflected by the polarization beam splitter and incident on the carrier, so that the illumination at various places on the carrier is relatively uniform. Moreover, since the light source generating module is not facing the carrier, the camera can face the carrier, so that the camera can face the product to be tested, and the camera has a better effect of photographing the product to be tested, and the photographed image is less distorted, so as to reduce the processing pressure of the image and improve the accuracy of the detection result. In addition, the camera and the light source generating module can be arranged separately, that is, the camera and the light source generating module do not have to be arranged facing the carrier, thereby reducing the difficulty of arranging the camera and the light source generating module.

[0023] 2. Polarizers can filter and screen light, making it purer to reduce the interference of stray light and improve the quality of fill light for the product to be tested, so that the photos taken by the camera have less interference and higher clarity.

[0024] 3. When the stage moves to the position calibration station, the position sensor measures the distance between the product to be tested and the position sensor to adjust the height of the product to be tested so that the height of each product to be tested is consistent. Finally, after the stage moves to the test station, the camera automatically takes a picture. After the picture is taken, the stage automatically moves to the loading and unloading station, and the cycle repeats.

[0025] 4. The first adjustment mechanism can adjust the position and levelness of the polarizer, so that the polarizer is perpendicular to the light path, reducing glare and reflected light, improving the imaging quality of the camera, and thus improving the detection accuracy.

[0026] 5. The second adjustment mechanism can adjust the position and levelness of the stage, ensuring that the product under test is well level, allowing the camera to be perpendicular to the product under test. This helps reduce distortion in the camera-captured image, improves image quality, and thus enhances test accuracy. Furthermore, the in-house designed three-dimensional spatial orientation fine adjustment mechanism, consisting of three first adjustment screws, a first elastic support member, and a first adjustment plate, offers a lighter and simpler structure than a three-dimensional spatial orientation adjustment mechanism assembled from purchased standard components that rotate around the X / Y / Z axes. Furthermore, the mechanism allows for more precise three-dimensional posture adjustment, achieving higher accuracy.

[0027] 6. The third adjustment mechanism adjusts the distance between the camera and the stage, allowing the camera to maintain an optimal focus range. Adjusting the distance between the camera and the stage also changes the camera's field of view, allowing the camera to capture products of varying sizes, improving the compatibility of the inspection device. By adjusting the camera's orientation, the camera can be positioned directly over the product under test, or at a specific angle to capture images of the product from the front or from a specific angle, meeting various requirements. Adjusting the camera's orientation can also compensate for assembly errors.

[0028] 7. The fourth adjustment mechanism can drive the light source generation module to be placed close to the polarization beam splitter, thereby reducing light leakage, improving camera imaging quality, and thus improving detection accuracy. The fourth adjustment mechanism also allows the light source generation module to face the polarization beam splitter, making the light path more collimated and improving imaging effects.

[0029] 8. The fifth adjustment mechanism can position the polarization beam splitter and the light source generation module on the same horizontal axis, or on the same vertical axis as the camera, thereby reducing optical path losses. By adjusting the orientation of the polarization beam splitter, the polarization beam splitter can be aligned with the light source generation module, thereby reducing optical path losses.

[0030] 9. The second adjustment screw can fine-tune the verticality of the polarization beam splitter, further improving the installation accuracy of the polarization beam splitter, further enhancing imaging quality and thus improving detection accuracy. In addition, the in-house designed three-dimensional spatial orientation fine adjustment mechanism consisting of three second adjustment screws, a second elastic support member, and a second adjustment plate is more lightweight and simpler than the three-dimensional spatial orientation adjustment mechanism assembled from purchased standard parts that rotate around the X / Y / Z axes, and can achieve more precise three-dimensional posture adjustment, thereby achieving higher accuracy.

[0031] 10. The three colors of light are mixed into white light by the cubic prism, making the light emitted by the light source generation module relatively pure. Moreover, by adjusting the ratio of the red, green, and blue light sources, parameters such as the color temperature of the white light can be adjusted to suit different testing requirements. Optionally, the light source generation module also includes a light homogenizer, which is arranged corresponding to the output surface of the cubic prism, thereby making the output light of the cubic prism more uniform.

[0032] 11. Provide optical path guarantee for AR display chip detection, and simultaneously realize relevant performance detection, such as uniformity, contrast, reflectivity, etc., with a high degree of automation, improving detection efficiency and reliability.

[0033] 12. The present invention satisfies the high lighting requirements for AR display chip detection. The light source has good uniformity and meets the polarized light requirements, filling the gap in the market for detection equipment for this type of display chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of an AR lens detection device in one embodiment of the present application;

[0036] Figure 2 This is a schematic diagram of the internal structure of an AR lens detection device in one embodiment of the present application;

[0037] Figure 3 This is a schematic diagram from a first perspective of the structure above the platform of an AR lens testing device in one embodiment of the present application;

[0038] Figure 4 A schematic diagram showing the structure above the platform of the AR lens inspection device according to an embodiment of the present application from a second perspective;

[0039] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0040] Figure 6 A schematic diagram showing the structure above the platform of the AR lens testing device in an embodiment of the present application from a third perspective;

[0041] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle;

[0042] Figure 8A schematic diagram showing the structure above the platform of the AR lens testing device according to an embodiment of the present application from a fourth perspective;

[0043] Figure 9 This is a schematic diagram of the optical path of an AR lens detection device in one embodiment of the present application.

[0044] Explanation of reference numerals: 100, AR lens testing device; 110, base; 120, carrier; 130, position sensor; 140, light source generating module; 141, light source; 1411, red light source; 1412, green light source; 1413, blue light source; 1414, cube prism; 1415, light homogenizer; 142, lens barrel; 150, polarization beam splitter; 160, polarizer; 170, camera; 180, collimator; 191, supporting member; 192, pressing mechanism; 193, image signal generator; 210, first adjustment mechanism; 220, second adjustment mechanism; 221, first shift Moving assembly; 222, second moving assembly; 223, third moving assembly; 224, first substrate; 225, first adjustment plate; 226, first adjustment screw; 227, first elastic support member; 230, third adjustment mechanism; 240, fourth adjustment mechanism; 241, first rotating assembly; 242, second rotating assembly; 243, fourth moving assembly; 250, fifth adjustment mechanism; 261, second substrate; 262, second adjustment plate; 263, second adjustment screw; 270, cover; 280, movable door; 310, product to be tested; XX, first direction; YY, second direction; ZZ, third direction. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0050] like Figure 1-3 As shown, the first aspect of an embodiment of the present application provides an AR lens detection device 100, which includes a base 110, a carrier 120, a position sensor 130, a light source generating module 140, a polarization spectrometer 150, a polarizer 160 and a camera 170.

[0051] The carrier 120 is used to carry the product to be tested 310. The product to be tested 310 can be a display screen of AR glasses. The material of the display screen can be Micro-OLED or Micro-LED, for example. The carrier 120 can be plate-shaped, so that there is enough space for placement. The carrier 120 can move relative to the base 110 along the first direction XX, the second direction YY and the third direction ZZ, and the carrier 120 has a loading and unloading station, a position calibration station and a testing station in the first direction XX. The first direction XX, the second direction YY and the third direction ZZ are perpendicular to each other. Optionally, a placement groove is provided on the carrier 120, and the placement groove fits with the product to be tested 310. The placement groove can limit the product to be tested 310, so that the product to be tested 310 is not easy to fall from the carrier 120. In addition, the placement slot can also ensure that the product to be tested 310 maintains the same angle with the stage 120 each time it is placed on the stage 120 , so that different products to be tested 310 can face the camera 170 at the same angle to improve the stability of the inspection.

[0052] The position sensor 130 is provided corresponding to the position calibration station, and is used to detect the distance between the position sensor 130 and the product to be measured 310. The position sensor 130 can be, for example, a distance sensor.

[0053] The light source generating module 140 can be, for example, an LED lamp, a fluorescent lamp, or the like. Light emitted by the light source generating module 140 is incident on the carrier 120 directly or after being specularly reflected, thereby providing supplemental illumination for the product under test 310 on the carrier 120. Specular reflection, as opposed to diffuse reflection, occurs when the reflective surface is relatively smooth.

[0054] The polarization beam splitter 150 reflects the light emitted by the light source generating module 140 onto the product under test 310 on the stage 120. The product under test 310 further reflects the light, and both the light emitted by the product under test 310 and the reflected light can pass through the polarization beam splitter 150 and enter the camera 170. For example, the polarization beam splitter 150 can be a polarization beam splitter 150 (PBS). The PBS is a prism formed by gluing the bottom edges of two 45-degree isosceles right-angle prisms. When light enters the PBS, the PBS reflects the s-polarized light (perpendicular to the plane of the incident light) and allows the p-polarized light (parallel to the plane of the incident light) to pass through. The polarization beam splitter 150 treats the light emitted by the light source generating module 140 as s-polarized light, and the light emitted by the product under test 310 and the reflected light as p-polarized light.

[0055] Polarization beam splitter 150 can change the optical path of light source generating module 140, so that even if light source generating module 140 is not facing stage 120, the light emitted by light source generating module 140 can still be reflected by polarization beam splitter 150 and incident on stage 120, thereby making the illumination on stage 120 more uniform. Moreover, since light source generating module 140 is not facing stage 120, camera 170 can face stage 120, thereby allowing camera 170 to face product 310. Camera 170 can capture product 310 with better effect and less distortion in the captured image, thereby reducing the image processing pressure and improving the accuracy of the test results. In addition, camera 170 and light source generating module 140 can be arranged separately, that is, camera 170 and light source generating module 140 do not need to be arranged facing stage 120, thereby reducing the difficulty of arranging camera 170 and light source generating module 140.

[0056] Polarizer 160 is disposed between polarizing beam splitter 150 and stage 120. Light emitted by light source generating module 140 enters polarizing beam splitter 150, is reflected by polarizing beam splitter 150, passes through polarizer 160, and is incident on product under test 310. Light reflected by product under test 310 passes through polarizer 160 and enters camera 170. The main function of polarizer 160 is to allow light with a specific vibration direction to pass through while absorbing light in other directions, thereby achieving selective passage or blocking of light. Polarizer 160 can filter and screen light, making the light purer, thereby reducing interference from stray light and improving the quality of fill light for product under test 310. As a result, the photos taken by camera 170 have less interference and higher clarity.

[0057] The light source generating module 140, the polarizing plate 160, the polarizing beam splitter 150 and the camera 170 are all arranged at corresponding test stations. When performing product testing, the carrier 120 is located at the test station, the light source generating module 140 and the polarizing beam splitter 150 are arranged in sequence along the second direction YY, and the product to be tested 310, the polarizing plate 160, the polarizing beam splitter 150 and the camera 170 are arranged in sequence along the third direction ZZ.

[0058] The carrier 120 is movably arranged on the base 110 in the horizontal direction. When the carrier 120 is located at the loading and unloading station, the user can remove the tested product 310 and place the untested product 310 on the carrier 120. When the carrier 120 moves to the position calibration station, the position sensor 130 measures the distance between the product 310 to be tested and the position sensor 130 to adjust the height of the product 310 to be tested, so that the height of each product 310 to be tested is consistent. Finally, after the carrier 120 moves to the testing station, the camera 170 automatically takes a picture. After the picture is taken, the carrier 120 automatically moves to the loading and unloading station, and the cycle is repeated.

[0059] When the carrier 120 is located at the loading and unloading station, the carrier 120 and the polarization beam splitter 150 are spaced apart in the horizontal direction, so that there is enough space around the carrier 120 to facilitate the picking and placing of the product 310 to be tested. The picking and placing of the product 310 to be tested can be manual or automatic by a robotic arm. The loading and unloading station can be set to a position that is convenient for user operation. When the carrier 120 is located at the testing station, the carrier 120 is located directly below the polarization beam splitter 150, and the distance between the carrier 120 and the polarization beam splitter 150 can be relatively small, thereby reducing optical path loss.

[0060] like Figure 3 As shown, in some embodiments, the AR lens detection device 100 further includes a collimator 180, and the light source generating module 140, the polarization beam splitter 150 and the collimator 180 are arranged in sequence along the second direction YY, and the collimator 180 is used to provide collimation correction when the device is adjusted.

[0061] Specifically, the collimator 180 can emit collimated light toward the polarization beam splitter 150, the camera 170, and the light source generating module 140. The collimated light can present a cross calibration mark, which is beneficial to the calibration of the polarization beam splitter 150, the camera 170, and the light source generating module 140.

[0062] like Figure 3 As shown, in some embodiments, the AR lens testing device 100 further includes a first adjustment mechanism 210 and a support member 191 mounted on the first adjustment mechanism 210. The position adjustment mechanism is disposed on the base 110, and the support member 191 extends between the polarization beam splitter 150 and the product to be tested 310. The polarizer 160 is disposed on the support member 191. The first adjustment mechanism 210 is used to adjust the movement of the polarizer 160 along the first direction XX, the second direction YY, and the third direction ZZ, as well as to adjust the parallelism between the polarizer 160 and the product to be tested 310. For example, the first adjustment mechanism 210 can be a six-axis adjustment mechanism, for example, using a slider, a lead screw, a telescopic rod, a rotating shaft, etc. to achieve movement and adjustment in three directions.

[0063] By providing the first adjustment mechanism 210 , the position and levelness of the polarizer 160 can be adjusted so that the polarizer 160 is perpendicular to the light path, thereby reducing glare and reflected light, improving the imaging quality of the camera 170 , and further enhancing detection accuracy.

[0064] like Figure 3 As shown, in some embodiments, the AR lens testing device 100 further includes a second adjustment mechanism 220, which includes a first movable assembly 221, a second movable assembly 222, and a third movable assembly 223. The first movable assembly 221 is movably disposed on the base 110 along a first direction XX, the second movable assembly 222 is movably disposed on the first movable assembly 221 along a second direction YY, and the third movable assembly 223 is movably disposed on the second movable assembly 222 along a third direction ZZ. The carrier 120 is disposed on the third movable assembly 223. The second adjustment mechanism 220 can illustratively be a three-axis adjustment mechanism, for example, achieving movement and adjustment in three directions through a slider, a lead screw, a telescopic rod, etc.

[0065] like Figure 4 and Figure 5As shown, the second adjustment mechanism 220 also includes a first substrate 224, a first adjustment plate 225, three first adjustment screws 226 and a first elastic support member 227 arranged between the first substrate 224 and the first adjustment plate 225. The first substrate 224 is arranged horizontally and fixedly connected to the output end of the third moving component 223. The carrier 120 is fixedly connected to the first adjustment plate 225. The three first adjustment screws 226 are all in contact with the first substrate 224 and are all screwed to the second adjustment plate 262. The first elastic support member 227 is connected between the first substrate 224 and the first adjustment plate 225. The three first adjustment screws 226 are arranged in a triangle. By adjusting the distance between the three points between the first substrate 224 and the first adjustment plate 225, the horizontality of the first adjustment plate 225 can be adjusted. It should be noted that there is no limit to the number of first elastic support members 227. It can be one, or three springs can be set corresponding to the positions of the three first adjustment screws 226. It can also be any other number, as long as it can play the role of elastic support between the first substrate 224 and the first adjustment plate 225, so as to cooperate with the first adjustment screws 226 to achieve the purpose of spatial orientation and posture adjustment; in addition, the number of first adjustment screws 226 can also be not limited to three, but can be more than three, and can be set according to specific needs.

[0066] By providing a second adjustment mechanism 220, the position and levelness of the stage 120 can be adjusted, thereby ensuring that the product under test 310 is well leveled, and thus allowing the camera 170 to be perpendicular to the product under test 310. This helps to reduce distortion in the image captured by the camera 170, improve the image quality of the camera 170, and thus enhance inspection accuracy. Furthermore, the in-house designed three-dimensional spatial orientation fine adjustment mechanism, consisting of three first adjustment screws 226, a first elastic support member 227, and a first adjustment plate 225, offers a lighter and simpler structure than a three-dimensional spatial orientation adjustment mechanism assembled from purchased standard components that rotate around the X / Y / Z axes. Furthermore, the mechanism provides more precise three-dimensional posture adjustment, achieving higher accuracy.

[0067] like Figure 3 As shown, in some embodiments, the AR lens testing device 100 further includes a crimping mechanism 192 and an image signal generator 193. The crimping mechanism 192 moves synchronously with the carrier 120. The crimping mechanism 192 is used to connect the product under test 310 to the image signal generator 193, and the image signal generator 193 is used to illuminate the product under test 310. The crimping mechanism 192 ensures that the product under test 310 can be stably fixed on the carrier 120, thereby preventing the product under test 310 from moving slightly, improving the consistency of the camera 170's shooting, and improving the accuracy of the AR lens testing device 100's testing.

[0068] like Figure 3As shown, in some embodiments, the AR lens inspection device 100 further includes a third adjustment mechanism 230. The third adjustment mechanism 230 is disposed on the base 110, and the camera 170 is disposed on the third adjustment mechanism 230. The third adjustment mechanism 230 is used to adjust the camera 170 to move along the third direction ZZ, rotate about the first direction XX, and rotate about the second direction YY. The third adjustment mechanism 230 can be, for example, a multi-axis adjustment mechanism, for example, using a slider, a lead screw, a telescopic rod, a rotating shaft, etc. to achieve movement and adjustment in three directions.

[0069] By adjusting the distance between camera 170 and stage 120, camera 170 can be placed in an appropriate focus range. Furthermore, by adjusting the distance between camera 170 and stage 120, the field of view of camera 170 can be changed, allowing camera 170 to capture images of products 310 of different sizes, thereby improving the compatibility of the inspection device. By adjusting the orientation of camera 170, camera 170 can be positioned directly opposite product 310, or at a specific angle to capture images of the front of product 310, or at a specific angle, to meet different needs. Of course, by adjusting the orientation of camera 170, assembly errors of camera 170 can also be offset.

[0070] like Figure 3 and Figure 8 As shown, in some embodiments, the AR lens detection device 100 also includes a fourth adjustment mechanism 240, the fourth adjustment mechanism 240 includes a first rotating component 241, a second rotating component 242 and a fourth moving component 243, the light source generating module 140 is arranged on the first rotating component 241, the first rotating component 241 is used to drive the light source generating module 140 to rotate around the second direction YY, the fourth moving component 243 is connected to the first rotating component 241, the fourth moving component 243 is used to adjust the light source generating module 140 to move along the first direction XX, the second rotating component 242 is connected to the fourth moving component 243, and the second rotating component 242 is used to drive the light source generating module 140 to rotate around the third direction ZZ.

[0071] Fourth adjustment mechanism 240 can position light source generating module 140 closer to polarization beam splitter 150, thereby reducing light leakage, improving the imaging quality of camera 170, and thus enhancing detection accuracy. Furthermore, fourth adjustment mechanism 240 enables light source generating module 140 to face polarization beam splitter 150, resulting in a more collimated optical path and better imaging.

[0072] like Figure 4As shown, the light source generating module 140 includes a light source 141 and a lens barrel 142. The light source 141 is movably disposed on a first rotating assembly 241 along a first direction XX, and the lens barrel 142 is fixedly disposed on the first rotating assembly 241. The light source 141 can be disposed close to the lens barrel 142 to reduce light leakage, improve the imaging quality of the camera 170, and thus improve detection accuracy.

[0073] like Figure 3 As shown, in some embodiments, the AR lens testing device 100 further includes a fifth adjustment mechanism 250. The fifth adjustment mechanism 250 is disposed on the base 110, and the polarization beam splitter 150 is mounted on the fifth adjustment mechanism 250. The fifth adjustment mechanism 250 is used to adjust the polarization beam splitter 150 to move along the third direction ZZ, rotate about the first direction XX, rotate about the second direction YY, and rotate about the third direction ZZ. The fifth adjustment mechanism 250 can be illustratively a multi-axis adjustment mechanism, for example, using a slider, a lead screw, a telescopic rod, a rotating shaft, etc. to achieve movement and adjustment in three directions.

[0074] The fifth adjustment mechanism 250 can position the polarization beam splitter 150 and the light source generating module 140 on the same horizontal axis, or position the polarization beam splitter 150 and the camera 170 on the same vertical axis, thereby reducing optical path losses. By adjusting the orientation of the polarization beam splitter 150, the polarization beam splitter 150 can be aligned with the light source generating module 140, thereby reducing optical path losses.

[0075] like Figure 6 and Figure 7 As shown, in some embodiments, the AR lens detection device 100 also includes a second substrate 261, a second adjustment plate 262, three second adjustment screws 263 and a second elastic support member arranged between the second substrate 261 and the second adjustment plate 262. The second substrate 261 is vertically arranged and fixedly connected to the output end of the fifth adjustment mechanism 250. The polarization spectrometer 150 is fixedly connected to the second adjustment plate 262. The three second adjustment screws 263 are all in contact with the second substrate 261 and are all screwed to the second adjustment plate 262. The second elastic support member is connected between the second substrate 261 and the second adjustment plate 262. The three second adjustment screws 263 are arranged in a triangle. The verticality of the second adjustment plate 262 is adjusted by adjusting the distance between the three points between the second substrate 261 and the second adjustment plate 262. It should be noted that there is no limit to the number of second elastic support members. It can be one, or three springs can be set corresponding to the positions of the three second adjustment screws 263. It can also be any other number, as long as it can play the role of elastic support between the second substrate 261 and the second adjustment plate 262, so as to cooperate with the second adjustment screws 263 to achieve the purpose of spatial orientation and posture adjustment; in addition, the number of second adjustment screws 263 can also be not limited to three, but can be more than three, and can be set according to specific needs.

[0076] Second adjustment screw 263 can fine-tune the verticality of polarization beam splitter 150, further improving the installation accuracy of polarization beam splitter 150, further enhancing imaging quality and thus detection accuracy. Furthermore, the in-house designed three-dimensional spatial orientation fine adjustment mechanism, consisting of three second adjustment screws 263, a second elastic support member, and a second adjustment plate 262, offers a more compact and simple structure than a three-dimensional orientation adjustment mechanism assembled from purchased standard components that rotate around the X / Y / Z axes. Furthermore, it allows for more precise three-dimensional attitude adjustment, achieving higher precision.

[0077] like Figure 8 As shown, in some embodiments, the light source generating module 140 includes a red light source 1141, a green light source 1412, a blue light source 1413 and a cube prism 1414. The red light source 1141, the green light source 1412 and the blue light source 1413 are respectively arranged corresponding to the three incident surfaces of the cube prism 1414, so that the three colors of light are mixed into white light.

[0078] Exemplarily, the red light source 1141, the green light source 1412, and the blue light source 1413 are respectively arranged corresponding to the three incident surfaces of the cubic prism 1414, and the three colors of light sources 141 are mixed into white light through the cubic prism 1414, so that the light emitted by the light source generating module 140 is relatively pure. Moreover, by adjusting the ratio of the light sources 141 of the red light source 1141, the green light source 1412, and the blue light source 1413, the color temperature and other parameters of the white light can be adjusted to meet different test requirements. Optionally, the light source generating module 140 also includes a light homogenizer 1415, which is arranged corresponding to the exit surface of the cubic prism 1414, so that the exit light of the cubic prism 1414 is more uniform.

[0079] like Figure 1 and Figure 2 As shown, in some embodiments, the detection device further includes a cover 270, which is covered on the base 110, and the carrier 120, the position sensor 130, the light source generating module 140, the polarization beam splitter 150, the polarizer 160 and the camera 170 are all arranged in the cover 270. The cover 270 can be illustratively a square shell, and the cover 270 can be made of a metal plate, so as to have high strength. The cover 270 can block external light, thereby reducing the interference of external light on the test results and improving the accuracy of the test results. At the same time, the cover 270 can also block dust to reduce the probability of the product to be tested 310 being contaminated by dust, and to minimize the test errors caused by dust.

[0080] Optionally, a movable door 280 is provided on the cover body 270. When the test is completed, the movable door 280 is opened to facilitate the user to take out and place the product 310 to be tested. When the test starts, the movable door 280 is closed to block light.

[0081] The following is an example of the working process of the AR lens testing device 100:

[0082] like Figure 9 As shown, the polarizer 160 is arranged between the polarization beam splitter 150 and the carrier 120. The light emitted by the light source generating module 140 enters the polarization beam splitter 150, is reflected by the polarization beam splitter 150, passes through the polarizer 160, and is incident on the product to be tested 310. The light reflected by the product to be tested 310 passes through the polarizer 160 and enters the camera 170.

[0083] The image signal generator 193 is used to electrically connect to the product under test 310 to drive the product under test 310 to display a preset image. For example, the image signal generator 193 is electrically connected to the product under test 310 via a cable terminal, or the image signal generator 193 is electrically connected to the product under test 310 via a pin. The cable terminal and the pin can be provided on the carrier 120 so that when the product under test 310 is placed on the carrier 120, the product under test 310 can be electrically connected to the image signal generator 193 simultaneously. The preset image can include one or more images. For example, the preset image can include a solid color image, a nine-point circle image, a horizontal and vertical black and white line pair image, a checkerboard image, and the like.

[0084] The camera 170 is used to take a photo of the product to be tested 310 when it displays a preset screen. The AR lens testing device 100 has an analysis module, which is electrically connected to the camera 170. The camera 170 can transmit the taken photos to the analysis module. The analysis module tests the reflectivity of the product to be tested 310 based on the photos taken by the camera 170. For example, the reflectivity can be calculated by measuring the intensity ratio of the light reflected by the object to the incident light, that is, the reflectivity is calculated by comparing the luminous intensity of the light generating module 140 with the light intensity captured by the camera 170. The luminous intensity of the light generating module 140 can be preset, so it is only necessary to detect whether the light intensity captured by the camera 170 is appropriate. Of course, the reflectivity can also be calculated by other methods, which are not limited here.

[0085] It is understood that the number of photos captured by camera 170 may be one or more, and the types of the multiple photos may be the same or different. The analysis module can analyze multiple photos of the same type and reduce errors by averaging the test results to improve the accuracy of the test results. Alternatively, the analysis module can test more parameters of the product under test 310 by analyzing multiple photos of different types.

[0086] In some embodiments, the analysis module further detects the contrast of the product under test 310 based on the photo taken by the camera 170. For example, the product under test 310 displays a checkerboard pattern, and the analysis module calculates the contrast of the product under test 310 by analyzing the brightness difference between the black and white areas in the photo.

[0087] In some embodiments, the analysis module also detects the uniformity of the product under test 310 based on the photo taken by the camera 170. For example, the product under test 310 displays a pure white image. By dividing the photo into multiple areas, comparing the average brightness of each area, and then detecting the uniformity of the product under test 310 based on the difference in average brightness between different areas, the analysis module can detect the uniformity of the product under test 310.

[0088] In some embodiments, the analysis module also detects the number of bad pixels on the product under test 310 based on the images captured by the camera 170. For example, the analysis module captures multiple images of different solid colors and detects whether there are pixels of different colors within the images, thereby detecting the number of bad pixels on the product under test 310. Appropriate lighting facilitates the detection of defects on the screen, such as bad pixels and dark spots.

[0089] It should be noted that the camera 170 of the embodiment of the present application can also take pictures of the product under test 310 when it does not display a picture, that is, take pictures of the product under test 310 when it is off, so as to analyze whether the surface of the product under test 310 has scratches or other damage.

[0090] In some embodiments, optionally, the camera 170 only needs to take a photo of the product to be tested 310, and the analysis module uses existing AI technology for identification, and can simultaneously detect the reflectivity, contrast, uniformity and number of bad pixels of the product to be tested 310, thereby improving the detection efficiency.

[0091] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. An AR lens testing device, characterized in that: It includes a base, a stage, a position sensor, a light source generation module, a polarization beam splitter, a polarizer and a camera; The carrier is used to carry the product to be tested, and the carrier can move relative to the base along a first direction, a second direction, and a third direction. The carrier has a loading and unloading station, a position calibration station, and a testing station in the first direction. The first direction, the second direction, and the third direction are perpendicular to each other. The position sensor is provided corresponding to the position calibration station, and the position sensor is used to detect the distance between the position sensor and the product to be measured; The light source generating module, the polarizer, the polarization beam splitter and the camera are all arranged at corresponding test stations; when conducting product testing, the carrier is located at the test station, the light source generating module and the polarization beam splitter are arranged in sequence along the second direction, and the product to be tested, the polarizer, the polarization beam splitter and the camera are arranged in sequence along the third direction.

2. The AR lens detection device according to claim 1, characterized in that: The AR lens detection device also includes a collimator. The light source generation module, the polarization beam splitter and the collimator are arranged in sequence along the second direction. The collimator is used to provide collimation correction when the device is adjusted.

3. The AR lens detection device according to claim 1, characterized in that: The AR lens testing equipment also includes a first adjustment mechanism and a supporting member installed on the first adjustment mechanism. The position adjustment mechanism is arranged on the base. The supporting member extends between the polarization spectrometer and the product to be tested. The polarizer is arranged on the supporting member. The first adjustment mechanism is used to adjust the movement of the polarizer along the first direction, the second direction and the third direction, and to adjust the parallelism between the polarizer and the product to be tested.

4. The AR lens detection device according to claim 1, characterized in that: The AR lens testing device further includes a second adjustment mechanism, the second adjustment mechanism including a first movable assembly, a second movable assembly, and a third movable assembly, the first movable assembly being movably disposed on the base along a first direction, the second movable assembly being movably disposed on the first movable assembly along a second direction, the third movable assembly being movably disposed on the second movable assembly along a third direction, and the carrier being disposed on the third movable assembly; The second adjustment mechanism also includes a first substrate, a first adjustment plate, three first adjustment screws and a first elastic support member arranged between the first substrate and the first adjustment plate. The first substrate is arranged horizontally and fixedly connected to the output end of the third moving component. The carrier is fixedly connected to the first adjustment plate. The three first adjustment screws are all in contact with the first substrate and are all screwed to the second adjustment plate. The three first adjustment screws are arranged in a triangle. By adjusting the distance between the three points between the first substrate and the first adjustment plate, the horizontality of the first adjustment plate can be adjusted.

5. The AR lens detection device according to claim 1, characterized in that: The AR lens testing equipment also includes a crimping mechanism and an image signal generator. The crimping mechanism moves synchronously with the carrier. The crimping mechanism is used to connect the product to be tested with the image signal generator. The image signal generator is used to light up the product to be tested.

6. The AR lens detection device according to claim 1, characterized in that: The AR lens detection equipment also includes a third adjustment mechanism, which is arranged on the base, and the camera is arranged on the third adjustment mechanism. The third adjustment mechanism is used to adjust the camera to move along the third direction, rotate around the first direction, and rotate around the second direction.

7. The AR lens detection device according to claim 1, characterized in that: The AR lens testing device further includes a fourth adjustment mechanism, the fourth adjustment mechanism including a first rotating assembly, a second rotating assembly, and a fourth moving assembly, the light source generating module is disposed on the first rotating assembly, the first rotating assembly is used to drive the light source generating module to rotate around the second direction, the fourth moving assembly is connected to the first rotating assembly, the fourth moving assembly is used to adjust the light source generating module to move along the first direction, the second rotating assembly is connected to the fourth moving assembly, and the second rotating assembly is used to drive the light source generating module to rotate around the third direction; The light source generating module includes a light source and a lens barrel. The light source is movably disposed on the first rotating assembly along a first direction, and the lens barrel is fixedly disposed on the first rotating assembly.

8. The AR lens detection device according to claim 1, characterized in that: The AR lens detection equipment also includes a fifth adjustment mechanism, which is arranged on the base, and the polarization spectrometer is installed on the fifth adjustment mechanism. The fifth adjustment mechanism is used to adjust the polarization spectrometer to move along the third direction, rotate around the first direction, rotate around the second direction, and rotate around the third direction.

9. The AR lens detection device according to claim 8, characterized in that: The AR lens detection equipment also includes a second substrate, a second adjustment plate, three second adjustment screws and a second elastic support member arranged between the second substrate and the second adjustment plate. The second substrate is arranged vertically and fixedly connected to the output end of the fifth adjustment mechanism. The polarization spectrometer is fixedly connected to the second adjustment plate. The three second adjustment screws are all in contact with the second substrate and are all screwed to the second adjustment plate. The three second adjustment screws are arranged in a triangle. The verticality of the second adjustment plate can be adjusted by adjusting the distance between the three points between the second substrate and the second adjustment plate.

10. The AR lens detection device according to claim 1, characterized in that: The light source generating module includes a red light source, a green light source, a blue light source and a cubic prism. The red light source, the green light source and the blue light source are respectively arranged corresponding to the three incident surfaces of the cubic prism to mix the three colors of light into white light.

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