Testing equipment for near-eye display devices

Abstract

This utility model discloses a testing device for near-eye display devices, including a substrate, a lens clamping mechanism, a test source clamping mechanism, and a camera module. The lens clamping mechanism is connected to the substrate and includes a lens clamping module with a lens clamping position. The test source clamping mechanism includes multiple test source clamping modules with test source clamping positions. At least one of the lens clamping module and the test source clamping module is movably connected to the substrate along a first direction, and the multiple test source clamping modules are arranged sequentially along the first direction. The camera module is located above the lens clamping mechanism and is suitable for acquiring image information of the test source through the lens. For the same lens, the characteristic parameters of the lens are acquired through different test sources to determine the quality of the lens.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment for optical devices, and in particular to a testing equipment for near-eye display devices. Background Technology

[0002] A near-eye display is a head-mounted display device where the image is displayed at a distance less than the distance of distinct vision. Near-eye displays primarily use a projection device to display the image, and then optical elements (such as lens groups or waveguide elements) convert the image displayed on the screen into a virtual image at a greater distance for the human eye to view.

[0003] In the prior art, the imaging quality measurement of the aforementioned near-eye display device typically involves setting up a camera module, a lens clamping module for clamping the lens under test, and a test source clamping module for clamping the test source. The camera module captures images of the test source through the lens group to determine the characteristic parameters of the lens group.

[0004] The above solution suffers from the problems of having few testable parameters per test and requiring frequent changes to the test source. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a testing device for near-eye display devices, which can acquire various test source image information through a camera module via a lens held by the lens holding module by setting up multiple test source clamping modules and combining the relative movement between the lens clamping module and the test source clamping module, without disassembling or assembling the test source, thus achieving multiple test results of the lens.

[0006] This utility model embodiment provides a testing device for near-eye display devices, including: substrate; A lens clamping mechanism is connected to the substrate, and the lens clamping mechanism includes a lens clamping module, which has a lens clamping position for clamping a lens. A test source clamping mechanism is connected to the substrate. The test source clamping mechanism includes multiple test source clamping modules, and each test source clamping module is provided with a test source clamping position for clamping a test source. At least one of the lens clamping module and the test source clamping module is movably connected to the substrate along a first direction, and a plurality of the test source clamping modules are arranged sequentially along the first direction; the lens clamping module and the test source clamping module are offset along a second direction, the second direction is perpendicular to the first direction, and the lens clamping position and the test source clamping position are at the same height in the second direction; A camera module is disposed above the lens clamping mechanism and is adapted to acquire image information of the test source through the lens.

[0007] According to some embodiments of the present invention, the test source clamping module includes multiple reticle clamping modules and at least one screen clamping module. The angular resolution of the reticles clamped by different reticle clamping modules is different, and the angular resolution of the reticles changes gradient along the arrangement direction of the reticle clamping modules. The screen clamping module is adapted to clamp a display screen, which is used to display the captured image.

[0008] According to some embodiments of the present invention, the lens clamping mechanism further includes a lens driving module, which is connected to the substrate via the lens driving module and can reciprocate along the first direction under the drive of the lens driving module. The test source clamping mechanism further includes a test source driving module, which is connected to the substrate and can reciprocate along the first direction under the drive of the test source driving module.

[0009] According to some embodiments of the present invention, the testing equipment for the near-eye display device further includes a confocal measurement module connected to the substrate. The confocal measurement module includes a plurality of horizontally arranged confocal displacement sensors, the emitting end of which faces the lens and is located below the test source clamping position. The test source clamping mechanism further includes a first adjustment module, which is connected to the substrate via the first adjustment module. The first adjustment module includes an X-axis rotation adjustment component and a Y-axis rotation adjustment component, and is communicatively connected to the confocal measurement module. The lens clamping mechanism further includes a second adjustment module, which has the same structure as the first adjustment module and is communicatively connected to the confocal measurement module.

[0010] According to some embodiments of the present invention, the lens driving module and the test source driving module are arranged in parallel, and the confocal measurement module is located between the lens driving module and the test source driving module; The testing equipment for the near-eye display device also includes a substrate driving module and a housing. The substrate is connected to the housing through the substrate driving module. The substrate can reciprocate along the second direction under the drive of the substrate driving module to switch between the loading state and the detection state. The loading state is when the lens clamping position is detached from the detection field of view of the camera module and is suitable for loading; the detection state is when the lens clamping position is located below the detection field of view of the camera module and is suitable for detection.

[0011] According to some embodiments of the present invention, the first adjustment module further includes a Z-axis moving adjustment member, which is adapted to drive the test source clamping module to rise and fall, so as to adjust the distance between the test source and the lens.

[0012] According to some embodiments of the present invention, the lens clamping mechanism includes a plurality of lens clamping modules, which are arranged along the first direction, and the center distance between adjacent lens clamping modules is the same as the center distance between adjacent test source clamping modules.

[0013] According to some embodiments of the present invention, the confocal measurement module further includes a third adjustment module, which is adapted to adjust the position of the confocal displacement sensor relative to the camera module.

[0014] According to some embodiments of the present invention, the lens clamping module includes a clamp fixing base and a lens clamp detachably connected to the clamp fixing base. The clamp fixing base is provided with mounting positions adapted to various lens clamps, and different types of lens clamps are suitable for clamping different types of lenses.

[0015] According to some embodiments of this utility model, the testing equipment for the near-eye display device further includes a leak-proof mechanism. The leak-proof mechanism is located below the lens clamping module. The leak-proof mechanism includes a leak-proof seat and a leak-proof drive module. The leak-proof seat is provided with a receiving groove, which is located directly below the lens clamping position. The leak-proof seat is adapted to rise and fall under the drive of the leak-proof drive module to switch between a leak-proof state and an avoidance state. The leak-proof state is when the leak-proof seat is close to the lens clamping module, and the receiving groove is adapted to receive the lens that falls from the lens clamping module. The avoidance state is when the leak-proof seat avoids the movement of the lens clamping module or the movement of the test source clamping module.

[0016] The present invention has at least the following beneficial effects: by setting multiple test sources, the characteristic parameters of the lens can be obtained through different test sources for the same lens to determine the quality of the lens in combination. Compared with the existing technology of setting a single test source, this application does not require stopping the machine to replace different test sources, thus improving the lens testing efficiency; and by adopting a multi-test source combination judgment method, the measurement error caused by a single test source is avoided, which greatly improves the accuracy of lens quality judgment.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the test device for the near-eye display device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the test source clamping mechanism of the test device for the near-eye display device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the lens clamping mechanism of the testing device for the near-eye display device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the leak prevention mechanism of the testing equipment for the near-eye display device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the confocal measurement module of the test equipment for the near-eye display device according to an embodiment of the present invention.

[0019] Figure label: 100. Substrate; 200. Lens clamping mechanism; 210. Lens clamping module; 211. Fixture fixing base; 212. Lens fixture; 220. Lens driving module; 230. Second adjustment module; 300. Test source clamping mechanism; 310. Test source clamping module; 311. Reticle clamping module; 312. Screen clamping module; 320. Test source drive module; 330. First adjustment module; 331. X-axis rotation adjustment component; 332. Y-axis rotation adjustment component; 333. Z-axis movement adjustment component; 400. Camera module; 500. Confocal measurement module; 510. Confocal displacement sensor; 520. Third adjustment module; 600. Substrate driving module; 700, box base; 800, Leakage prevention mechanism; 810, Leakage prevention seat; 811, Material receiving trough; 820, Leakage prevention drive module. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0024] Please refer to Figures 1 to 3As shown, this embodiment of the present invention provides a testing device for a near-eye display device, including a substrate 100, a lens clamping mechanism 200, a test source clamping mechanism 300, and a camera module 400. The lens clamping mechanism 200 is connected to the substrate 100 and includes a lens clamping module 210, which has a lens clamping position for clamping a lens. The test source clamping mechanism 300 is connected to the substrate 100 and includes multiple test source clamping modules 310, which have a position for clamping a test source. The test source clamping position of the test source; at least one of the lens clamping module 210 and the test source clamping module 310 is movably connected to the substrate 100 along a first direction (X direction in the figure), and a plurality of test source clamping modules 310 are arranged sequentially along the first direction; the lens clamping module 210 and the test source clamping module 310 are offset along a second direction, the second direction is perpendicular to the first direction, and the lens clamping position and the test source clamping position are at the same height in the second direction (Y direction in the figure); the camera module 400 is disposed above the lens clamping mechanism 200 and is suitable for acquiring image information of the test source through the lens.

[0025] According to the testing equipment for near-eye display devices in this embodiment of the present invention, the operator places the lens of the near-eye display device to be tested in the lens clamping mechanism 200 for clamping and fixing. The test source is fixed below the lens by the test source clamping mechanism 300. The camera module 400 acquires the image information of the test source through the clamped lens. The testing equipment obtains the characteristic parameters of the lens (such as the uniformity of the virtual image formed in the lens, imaging distortion, field of view, modulation transfer function, chromaticity and brightness, ghosting, etc.) based on the image information. After the image information of one test source is acquired, the lens clamping module 210 and the test source clamping module 310 move relative to each other to match the lens with the next test source, and repeat the shooting process to acquire the characteristic parameters of the lens again. The quality of the lens is determined by combining the multiple sets of characteristic parameters obtained from multiple test sources.

[0026] According to the testing device of the near-eye display device of the present invention, by setting multiple test sources, the characteristic parameters of the lens are obtained by different test sources for the same lens and the quality of the lens is determined by combination. Compared with the existing technology of setting a single test source, the present application does not require stopping the machine to replace different test sources, thus improving the lens testing efficiency; and by adopting the method of multi-test source combination judgment, the measurement error caused by a single test source is avoided, which greatly improves the accuracy of lens quality judgment.

[0027] In this embodiment, to prevent interference from external light, all the above components are housed inside a box (not shown in the figure), which creates a dark or no-light environment to improve test accuracy.

[0028] In this embodiment, "the test equipment obtains the characteristic parameters of the lens based on the image information" can specifically transmit the image information to the control center or mobile terminal, and obtain the characteristic parameters of the corresponding lens based on existing image algorithms. This is a conventional technical means for lens test equipment, and will not be elaborated here.

[0029] In some embodiments, combined with Figure 1 and Figure 2 As shown, the test source clamping module 310 includes multiple reticle clamping modules 311 and at least one screen clamping module 312. The reticles clamped by different reticle clamping modules 311 have different angular resolutions, and the angular resolution of the reticles changes gradient along the arrangement direction of the reticle clamping modules 311.

[0030] It should be noted that the angular resolution of the reticle itself (i.e., the sharpness and clarity of its image details) is a crucial parameter in a lens testing system. It directly and significantly affects the accuracy and reliability of the test results. If the angular resolution of the reticle itself is insufficient, it will become the "bottleneck" of the entire testing system, making it impossible to measure the true performance of the lens, or even leading to completely wrong conclusions.

[0031] In this embodiment, by setting multiple reticles with varying angular resolution gradients, this application can match a reticle with a suitable angular resolution among multiple reticles without stopping the machine to replace the reticle for different lenses, thereby improving the adaptability of the testing equipment to lenses of different near-eye display devices.

[0032] Furthermore, separating the reticles allows for adjustments to the specific characteristic parameters of the lens. For example, a high-frequency reticle can be set (which can be made using materials and processes with the highest contrast and sharpest edges to ensure that its own MTF is close to 100%, thus enabling the most accurate measurement of the lens's limit resolution without becoming a bottleneck due to insufficient accuracy) or a low-frequency reticle (which can be optimized for large-area uniformity and high reflectivity / transmittance, used for measuring distortion or relative illumination, without worrying about its high-frequency characteristics).

[0033] In this embodiment, the screen clamping module 312 is adapted to clamp the display screen, which is used to display the captured image to simulate the image actually seen by the user of the near-eye display device to detect artifacts. By setting up the screen clamping module 312, only a few key frequency reticles need to be made as references (for the measurement of MTF (modulation transfer function) of absolute reference, or a point source or knife-edge for measuring point spread function (PSF)). Most other test requirements (high-frequency, multi-frequency MTF scanning, multi-viewpoint testing, color and color difference testing, dynamic range and artifact testing, etc.) can be met by the relatively inexpensive display screen, thereby reducing the overall cost and maintenance difficulty of the equipment without sacrificing the final measurement accuracy.

[0034] In some embodiments, combined with Figures 1 to 3 As shown, the lens clamping mechanism 200 further includes a lens driving module 220. The lens clamping module 210 is connected to the substrate 100 through the lens driving module 220 and can reciprocate along the first direction under the drive of the lens driving module 220. The test source clamping mechanism 300 further includes a test source driving module 320. The test source clamping module 310 is connected to the substrate 100 through the test source driving module 320 and can reciprocate along the first direction under the drive of the test source driving module 320.

[0035] In this embodiment, the lens clamping module 210 is moved by the lens driving module 220, and the test source clamping module 310 is moved by the test source driving module 320. Based on realizing the relative movement between the lens clamping module 210 and the test source clamping module 310, the span of the test equipment in the first direction (X direction in the figure) is effectively reduced.

[0036] In this embodiment, the lens moving module and the test source moving module are linear slide modules, but they can also be pneumatic rods, lead screw modules, etc.

[0037] In some embodiments, combined with Figure 1 and Figure 5As shown, the testing equipment for near-eye display devices also includes a confocal measurement module 500 connected to the substrate 100. The confocal measurement module 500 includes multiple horizontally arranged confocal displacement sensors 510, with the emitting ends of the confocal displacement sensors 510 facing the lens and located below the test source clamping position. The test source clamping mechanism 300 also includes a first adjustment module 330, which is connected to the substrate 100. The first adjustment module 330 includes an X-axis rotation adjustment member 331 and a Y-axis rotation adjustment member 332, and is communicatively connected to the confocal measurement module 500. The lens clamping mechanism 200 also includes a second adjustment module 230, which has the same structure as the first adjustment module 330 and is communicatively connected to the confocal measurement module 500.

[0038] In this embodiment, during the preparation phase of the testing equipment (before the lens testing begins), the lens is clamped and fixed in the lens clamping module 210, and multiple test source clamping modules clamp the test source. The lens clamping module 210 and multiple test source clamping modules 310 are sequentially moved along the first direction above the confocal measurement module 500. The confocal displacement sensor 510 of the confocal measurement module 500 detects the distance between its transmitting end and the lens or test source. Based on the detection result of the confocal displacement sensor 510, the X-axis rotation adjustment component 331 and the Y-axis rotation adjustment component 332 of the first adjustment module 330 or the second adjustment component rotate, driving the test source or lens to rotate until it is parallel to the plane formed by the transmitting ends of the multiple confocal displacement sensors 510. This ensures the parallelism between the fixed lens and the test source each time, guarantees the imaging effect, and avoids interference from positional deviations between the two on the lens testing.

[0039] In some embodiments, combined with Figures 1 to 3 As shown, the lens driving module 220 and the test source driving module 320 are arranged in parallel, and the confocal measurement module 500 is located between the lens driving module 220 and the test source driving module 320; this facilitates the confocal measurement module 500 to measure the lens held by the lens clamping module 210 or the test source held by the test source clamping module 310.

[0040] In this embodiment, the testing equipment for the near-eye display device further includes a substrate driving module 600 and a housing 700. The substrate 100 is connected to the housing 700 through the substrate driving module 600. The substrate 100 can reciprocate along the second direction (Y direction in the figure) under the drive of the substrate driving module 600 to switch between a loading state and a detection state. The loading state is a state in which the lens clamping position is disengaged from the detection field of view of the camera module 400 and is suitable for loading. The detection state is a state in which the lens clamping position is located below the detection field of view of the camera module 400 and is suitable for detection.

[0041] In this embodiment, the substrate 100 is moved by the substrate driving module 600, so as to drive the lens clamping module 210 and the test source clamping module 310 to move as a whole and switch between the camera module 400 side (detection state) and the operator side (loading state), which facilitates the loading and unloading of lenses and test sources.

[0042] In some embodiments, combined with Figure 2 As shown, the first adjustment module 330 also includes a Z-axis moving adjustment member 333, which is adapted to drive the test source clamping module 310 to rise and fall, so as to adjust the distance between the test source and the lens, thereby simulating the situation where the virtual object is at different depths. This can simulate the eye focus adjustment (change in distance from the focus point to the lens) during actual use by the user, and is used to judge whether the image of the test source obtained by the camera through the lens is clear within the user's eye focusing range.

[0043] In this embodiment, each test source can be raised by 0.05 mm at a time by the Z-axis moving adjustment component 333 when being photographed, and raised a total of 20 times. After each elevation, the camera module 400 captures the image information of the test source to determine that the lens can clearly image within a certain focusing range.

[0044] In other embodiments, the lifting range or number of times can be increased to test the imaging effect of the lens over a larger focusing range.

[0045] In some embodiments, combined with Figures 1 to 3 As shown, the lens clamping mechanism 200 includes multiple lens clamping modules 210, which are arranged along a first direction, and the center distance between adjacent lens clamping modules 210 is the same as the center distance between adjacent test source clamping modules 310.

[0046] In this embodiment, multiple lens clamping modules 210 enable the testing equipment to test multiple lenses, greatly improving lens testing efficiency.

[0047] In this embodiment, two lens clamping modules 210 are provided, which can be used to test lenses of the same shape and specifications, or to test lenses in the same group (such as a near-eye display device with two symmetrical lenses on the left and right).

[0048] In some embodiments, combined with Figure 5 As shown, the confocal measurement module 500 also includes a third adjustment module 520, which has the same structure as the first adjustment module 330. The third adjustment module 520 is suitable for adjusting the position of the confocal displacement sensor 510 relative to the camera module 400.

[0049] In this embodiment, during the installation and debugging phase, the position of the confocal displacement sensor 510 is adjusted by the third adjustment module 520 so that the plane formed by the transmitting end of the confocal displacement sensor 510 is parallel to the detection field of view of the camera module 400, ensuring that the lens and test source adjusted with the confocal displacement sensor 510 as the reference are parallel to the detection field of view of the camera module 400.

[0050] In some embodiments, combined with Figure 2 As shown, the lens clamping module 210 includes a clamping base 211 and a lens clamp 212 detachably connected to the clamping base 211. The clamping base 211 is provided with mounting positions that are adapted to various lens clamps 212. Different types of lens clamps 212 are suitable for clamping different types of lenses, enabling rapid assembly and testing of different types of lenses and improving testing efficiency.

[0051] In this embodiment, the lens clamp 212 includes a lens placement hole and clamping arms disposed on both sides of the lens placement hole that can be engaged to hold the lens.

[0052] In some embodiments, combined with Figure 1 , Figure 3 and Figure 4 As shown, the testing equipment for near-eye display devices also includes a leak prevention mechanism 800, which is located below the lens clamping module 210. The leak prevention mechanism 800 includes a leak prevention seat 810 and a leak prevention drive module 820. The leak prevention seat 810 is provided with a receiving groove 811, which is located directly below the lens clamping position. The leak prevention seat 810 is adapted to rise and fall under the drive of the leak prevention drive module 820 to switch between a leak prevention state and a avoidance state. In the leak prevention state, the leak prevention seat 810 is close to the lens clamping module 210, and the receiving groove 811 is adapted to receive lenses that fall from the lens clamping module 210. In the avoidance state, the leak prevention seat 810 avoids the movement of the lens clamping module 210 or the movement of the test source clamping module 310.

[0053] In this embodiment, before the lens is fixed to the lens clamping module 210, the leak-proof drive module 820 drives the leak-proof seat 810 to move upward and closer to the lens clamping position. At this time, the leak-proof seat 810 is in a leak-proof state. When the operator fixes the lens to the lens clamping position, the lens that falls due to misoperation will fall into the receiving groove 811 of the leak-proof seat 810. After the lens is fixed in the lens placement position, the leak-proof drive module 820 drives the leak-proof seat 810 to move downward to the avoidance state, which does not affect the relative movement between the lens clamping module 210 and the test source clamping module 310.

[0054] In this embodiment, the leak-proof drive module 820 is a pneumatic rod, but it can also be a slide module, a lead screw module, etc.

[0055] The following describes the overall working process of the testing equipment for the near-eye display device according to an embodiment of this utility model: The substrate driving module 600 drives the substrate 100 to move to the loading state, which is closer to the worker side for easy loading. The leak-proof drive module 820 raises the leak-proof seat 810 to the leak-proof state to catch the lens that is accidentally dropped by the operator; the operator fixes the lens to the lens clamping module 210 and the test source to the test source clamping module 310; after fixing, the leak-proof drive module 820 drives the leak-proof seat 810 to the clearance state, and the substrate drive module 600 drives the substrate 100 to move to the detection state, located below the camera module 400. At the start of the test, the lens driving module 220 drives the lens clamping module 210 to move the lens above the confocal measurement module 500. Based on the inspection results of the confocal displacement sensor 510, the second adjustment module 230 adjusts the lens position. The test source driving module 320 drives multiple test source clamping modules 310 to move one by one above the confocal measurement module 500. Based on the inspection results of the confocal displacement sensor 510, the first adjustment module 330 adjusts the test source position, and finally adjusts it to make the detection field of view of the camera module 400, the lens, and the test source parallel. The lens driving module 220 drives the lens to move and the test source driving module 320 drives the test source to move, so that the lens is sequentially matched with different test sources. When shooting on each test source, the first adjustment module 330 drives the test source to rise by 0.05 mm after completing one shooting. A single test source is shot 20 times. All image information obtained by the camera module 400 is concentrated in the control center or mobile terminal, and the characteristic parameters of the lens are determined by existing algorithms.

[0056] After all test sources have been photographed, the substrate 100 is returned to the loading state, and the leak-proof seat 810 is returned to the leak-proof state, waiting for the next lens to be tested.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A testing device for near-eye display devices, characterized in that, include: substrate(100); A lens clamping mechanism (200) is connected to the substrate (100). The lens clamping mechanism (200) includes a lens clamping module (210) which has a lens clamping position for clamping a lens. A test source clamping mechanism (300) is connected to the substrate (100). The test source clamping mechanism (300) includes a plurality of test source clamping modules (310), and each test source clamping module (310) is provided with a test source clamping position for clamping a test source. At least one of the lens clamping module (210) and the test source clamping module (310) is movably connected to the substrate (100) along a first direction, and a plurality of the test source clamping modules (310) are arranged sequentially along the first direction; the lens clamping module (210) and the test source clamping module (310) are offset along a second direction, the second direction is perpendicular to the first direction, and the lens clamping position and the test source clamping position are at the same height in the second direction; A camera module (400) is disposed above the lens clamping mechanism (200) and is adapted to acquire image information of the test source through the lens.

2. The testing equipment for near-eye display devices according to claim 1, characterized in that, The test source clamping module (310) includes multiple reticle clamping modules (311) and at least one screen clamping module (312). The angular resolution of the reticles clamped by different reticle clamping modules (311) is different, and the angular resolution of the reticles changes gradient along the arrangement direction of the reticle clamping modules (311). The screen clamping module (312) is adapted to clamp a display screen for displaying the captured image.

3. The testing equipment for near-eye display devices according to claim 1, characterized in that, The lens clamping mechanism (200) further includes a lens driving module (220), which is connected to the substrate (100) via the lens driving module (220) and can reciprocate along the first direction under the drive of the lens driving module (220). The test source clamping mechanism (300) further includes a test source driving module (320). The test source clamping module (310) is connected to the substrate (100) through the test source driving module (320) and can reciprocate along the first direction under the drive of the test source driving module (320).

4. The testing equipment for near-eye display devices according to claim 3, characterized in that, The testing equipment for the near-eye display device also includes a confocal measurement module (500) connected to the substrate (100). The confocal measurement module (500) includes a plurality of horizontally arranged confocal displacement sensors (510). The emitting end of the confocal displacement sensor (510) faces the lens and is located below the test source clamping position. The test source clamping mechanism (300) further includes a first adjustment module (330), the test source clamping module (310) is connected to the substrate (100) through the first adjustment module (330), the first adjustment module (330) includes an X-axis rotation adjustment component (331) and a Y-axis rotation adjustment component (332), and the first adjustment module (330) is communicatively connected to the confocal measurement module (500); The lens clamping mechanism (200) further includes a second adjustment module (230), which has the same structure as the first adjustment module (330) and is communicatively connected to the confocal measurement module (500).

5. The testing equipment for near-eye display devices according to claim 4, characterized in that, The lens driving module (220) and the test source driving module (320) are arranged in parallel, and the confocal measurement module (500) is located between the lens driving module (220) and the test source driving module (320); The testing equipment for the near-eye display device further includes a substrate driving module (600) and a housing (700). The substrate (100) is connected to the housing (700) through the substrate driving module (600). The substrate (100) can reciprocate along the second direction under the drive of the substrate driving module (600) to switch between the loading state and the detection state. The loading state is a state in which the lens clamping position is detached from the detection field of view of the camera module (400) and is suitable for loading; the detection state is a state in which the lens clamping position is located below the detection field of view of the camera module (400) and is suitable for detection.

6. The testing equipment for near-eye display devices according to claim 4, characterized in that, The first adjustment module (330) further includes a Z-axis moving adjustment member (333), which is adapted to drive the test source clamping module (310) to rise and fall to adjust the distance between the test source and the lens.

7. The testing equipment for near-eye display devices according to claim 1, characterized in that, The lens clamping mechanism (200) includes a plurality of lens clamping modules (210), which are arranged along the first direction, and the center distance between adjacent lens clamping modules (210) is the same as the center distance between adjacent test source clamping modules (310).

8. The testing equipment for near-eye display devices according to claim 4, characterized in that, The confocal measurement module (500) further includes a third adjustment module (520), which has the same structure as the first adjustment module (330). The third adjustment module (520) is adapted to adjust the position of the confocal displacement sensor (510) relative to the camera module (400).

9. The testing apparatus for near-eye display devices according to any one of claims 1 to 8, characterized in that, The lens clamping module (210) includes a clamping base (211) and a lens clamp (212) detachably connected to the clamping base (211). The clamping base (211) is provided with mounting positions adapted to various lens clamps (212). Different types of lens clamps (212) are suitable for clamping different types of lenses.

10. The testing apparatus for a near-eye display device according to any one of claims 1 to 8, characterized in that, The testing equipment for the near-eye display device also includes a leak-proof mechanism (800), which is located below the lens clamping module (210). The leak-proof mechanism (800) includes a leak-proof seat (810) and a leak-proof drive module (820). The leak-proof seat (810) is provided with a receiving groove (811), which is located directly below the lens clamping position. The leak-proof seat (810) is adapted to be placed in the leak-proof drive module. Driven by (820), it rises and falls to switch between a leak-proof state and a avoidance state. The leak-proof state is when the leak-proof seat (810) is close to the lens clamping module (210) and the receiving groove (811) is adapted to receive the lens that falls from the lens clamping module (210). The avoidance state is when the leak-proof seat (810) avoids the movement of the lens clamping module (210) or the movement of the test source clamping module (310).

Images