Test equipment and test system

Abstract

The embodiment of the invention provides test equipment and a test system. The testing equipment comprises two human eye-like cameras, each human eye-like camera comprises a cornea-like lens, a light adjusting film and an imaging lens group, the imaging lens group comprises at least one imaging lens, the light adjusting film is located behind the cornea-like lens to simulate human eye pupils, and the light adjusting film is located behind the cornea-like lens to simulate the human eye pupils. The imaging lens group is positioned on the light emitting side of the dimming film; the first driving assembly is used for driving the human eye-like camera to rotate in the vertical direction; the second driving assembly is used for driving the human eye-like camera to rotate in the horizontal direction; and the third driving assembly is used for adjusting the distance between the two human eye-like cameras in the horizontal direction.

Description

A testing device and a testing system Technical Field

[0001] This application relates to the field of vision device technology, and more specifically, to a testing device and a testing system. Background Technology

[0002] In AR / VR / MR head-mounted displays, the optical-mechanical module plays a crucial role. It projects images of the virtual world, which can be two-dimensional or three-dimensional. During wear, the human eye can directly observe the content of the virtual world. The image quality projected by the optical-mechanical module needs to provide the wearer with a comfortable and immersive experience to enable extended wear of the AR / VR / MR head-mounted display. Therefore, testing the imaging quality of the optical-mechanical module in AR / VR / MR head-mounted displays is of paramount importance.

[0003] Currently, the eye-tracking structures used for testing AR / VR / MR head-mounted displays on the market cannot simulate the complex rotation of the human eye, and the universality of eye-tracking structures for testing AR / VR / MR head-mounted displays is poor, which affects the accuracy of eye-tracking structures in testing AR / VR / MR head-mounted display images.

[0004] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this application is to provide a new technology solution for testing equipment and testing system.

[0006] Firstly, embodiments of this application provide a testing device. The testing device includes:

[0007] Two human-eye-like cameras, each of which includes a corneal-like lens, a dimming film, and an imaging lens group, wherein the imaging lens group includes at least one imaging lens, the dimming film is located behind the corneal-like lens to simulate the pupil of a human eye, and the imaging lens group is located on the light-emitting side of the dimming film.

[0008] A first driving component is used to drive the human-eye-like camera to rotate in the vertical direction;

[0009] A second driving component is provided to drive the human-eye-like camera to rotate in the horizontal direction;

[0010] A third driving component is used to adjust the horizontal spacing between the two human-eye-like cameras.

[0011] Optionally, the first driving component includes a first rotating shaft and a first driving component, wherein the first driving component drives the first rotating shaft to rotate, thereby causing the human-eye-like camera to rotate in the vertical direction.

[0012] Optionally, the second driving component includes a second rotating shaft and a second driving member, the second driving member driving the second rotating shaft to rotate, thereby driving the human-eye-like camera and the first driving component to rotate.

[0013] Optionally, the first rotating shaft is located above the second rotating shaft, and the first rotating shaft and the second rotating shaft are arranged perpendicularly.

[0014] Optionally, the axis of the first rotation axis and the axis of the second rotation axis intersect at the rotation center of the human-eye-like camera.

[0015] Optionally, the first rotation axis of the first drive assembly connected to each of the two human-eye-like cameras is collinear.

[0016] Optionally, the second rotation axis of the second drive assembly connected to the two human-eye-like cameras is parallel to the second rotation axis of the second drive assembly.

[0017] Optionally, the third drive component includes a base and a base mating part, the base mating part being connected to the second drive component;

[0018] The base has a sliding groove assembly, and the base fitting is slidably disposed within the sliding groove assembly.

[0019] Optionally, the slide assembly includes a first slide and a second slide arranged parallel to the optical axis of the human-eye camera, with one side of the base fitting disposed in the first slide and the other side of the base fitting disposed in the second slide.

[0020] Optionally, the base fitting is U-shaped and is upside down on the second drive assembly.

[0021] Optionally, a protrusion is provided on the vertical surface of the base fitting that mates with the slide assembly, and the protrusion protrudes beyond the slide edge of the slide assembly.

[0022] Optionally, the imaging lens group includes a first lens disposed adjacent to the dimming film and a first cemented lens group disposed adjacent to the first lens;

[0023] The optical power of the first lens is positive;

[0024] The first cemented lens group includes a second lens and a third lens, wherein one of the second and third lenses has a positive optical power and the other lens has a negative optical power.

[0025] Optionally, a filter is disposed between the first lens and the first cemented lens group, the filter being used to absorb or reflect infrared light.

[0026] Optionally, the imaging lens group further includes a fourth lens and a fifth lens arranged sequentially along the incident optical axis, wherein the fourth lens is located on the light-emitting side of the first cemented lens group;

[0027] The fourth lens and the fifth lens have opposite optical powers.

[0028] Optionally, the imaging lens group further includes a second cemented lens group, which is located between the second lens and the third lens; the second cemented lens group includes a sixth lens and a seventh lens, wherein one of the sixth lens and the seventh lens has a positive optical power and the other lens has a negative optical power.

[0029] Optionally, the light-transmitting area of ​​the dimming film can be adjusted by electronic control.

[0030] Optionally, the anterior surface curvature of the corneal-like lens ranges from 7.5 mm to 8.0 mm, and the posterior surface curvature ranges from 6.5 mm to 7.0 mm.

[0031] Secondly, embodiments of this application provide a testing system. The testing system includes:

[0032] The test equipment as described in the first aspect is used to acquire image information of the device under test;

[0033] A signal processing device for receiving image information acquired by the test device;

[0034] The result analysis device analyzes the device under test based on the motion data from the human-eye camera and the image information transmitted to it by the signal processing device.

[0035] According to embodiments of this application, by defining the optical structure of the human-eye camera and combining the first and second driving components to achieve rotation of the human-eye camera, the human-eye camera simulates the rotation of the human eye, improving the accuracy of the test equipment in analyzing images of XR display devices. In addition, the horizontal distance between the two human-eye cameras is adjusted by the third driving component, making the test equipment more versatile (simulating the image analysis of the test equipment when wearers with different interpupillary distances wear the test equipment), further improving the accuracy of the test equipment in analyzing images of XR display devices.

[0036] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0038] Figure 1 shows a structural diagram of the test equipment provided in an embodiment of this application.

[0039] Figure 2 shows the connection structure diagram of the human eye-like camera and camera bracket according to an embodiment of this application.

[0040] Figure 3 shows the optical architecture diagram of the human eye-like camera provided in an embodiment of this application.

[0041] Figures 4a-4h show the dot array diagrams of the human eye-like camera provided in the embodiments of this application.

[0042] Figures 5a-5e show the MTF curves of the human eye-like camera provided in the embodiments of this application.

[0043] Figure 6 shows the relative illumination diagram of the human eye-like camera provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Human-like eye camera; 10. First-class human-like eye camera; 11. Second-class human-like eye camera; 12. Connecting hole;

[0046] 2. First drive assembly; 20. First rotating shaft; 21. First drive component;

[0047] 3. Second drive assembly; 30. Second rotating shaft; 31. Second drive component;

[0048] 4. Third drive component; 40. Base; 41. Base mating part; 411. Protrusion;

[0049] 42. Slide assembly; 421. First slide; 422. Second slide; 4211. First end face; 4221. Second end face;

[0050] 5. Camera bracket; 51. Connecting post; 511. First positioning hole;

[0051] 6. Mounting bracket; 61. Second positioning hole; 62. Connecting shaft;

[0052] 71. Lens-like film; 72. Dimming film; 73. Optical filter; 74. Protective glass;

[0053] 8. Imaging lens group; 81. First lens; 82. Second lens; 83. Third lens; 84. Fourth lens; 85. Fifth lens; 86. Sixth lens; 87. Seventh lens. Detailed Implementation

[0054] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0055] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0056] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0057] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0059] This application provides a testing device. The testing device has two human-eye-like cameras 1 that simulate human eye rotation, and acquires images of the device under test through the two human-eye-like cameras 1. The testing device is used to perform image analysis on XR display devices (extended reality, including AR augmented reality, VR virtual reality, etc.).

[0060] For example, the testing equipment can be used to analyze the image quality of XR display devices. The analysis items include, but are not limited to, distortion testing, MTF modulation, contrast, color difference, and brightness detection of the binocular fused image.

[0061] Referring to Figures 1 and 2, the test device includes: two human-eye-like cameras 1, each of the human-eye-like cameras 1 including a corneal-like lens 71, a dimming film 72 and an imaging lens group 8, the imaging lens group 8 including at least one imaging lens, the dimming film 72 being located behind the corneal-like lens 71 to simulate the pupil of a human eye, and the imaging lens group 8 being located on the light-emitting side of the dimming film 72;

[0062] A first driving component 2 drives the human-eye-like camera 1 to rotate vertically; a second driving component 3 drives the human-eye-like camera 1 to rotate horizontally; and a third driving component 4 adjusts the horizontal spacing between the two human-eye-like cameras 1.

[0063] In this embodiment, referring to FIG1, the test device includes two human-eye-like cameras 1, which simulate the rotation of human eyes to acquire images of the device under test. Exemplarily, the two human-eye-like cameras 1 include a first human-eye-like camera 10 and a second human-eye-like camera 11, where the first human-eye-like camera 10 simulates the rotation of a human right eye and the second human-eye-like camera 11 simulates the rotation of a human left eye.

[0064] Specifically, referring to Figure 3, the human-eye-like camera 1 achieves an imaging effect similar to that of a human eye through optical design. The human-eye-like camera 1 has a corneal-like lens 71, a dimming film 72, and an imaging lens group 8 arranged sequentially along the incident optical axis.

[0065] The corneal-like lens 71 is located at the very front of the optical module and is the first part that light comes into contact with. The corneal-like lens 71 has the function of diverging light, similar to the cornea of ​​the human eye. The corneal-like lens 71 is used to initially adjust the direction and degree of divergence of light, providing suitable light input for the subsequent dimming film 72 and imaging lens group 8.

[0066] The dimming film 72 is located on the light-emitting side of the corneal lens. Specifically, the corneal lens diverges light so that the light can pass through the light-transmitting area of ​​the dimming film 72 and be received by the imaging lens group 8 for subsequent imaging.

[0067] In the structure of the human-eye-like camera 1, the dimming film 72 acts similarly to the iris, changing the amount of light transmitted by adjusting its light-transmitting area. This means that the dimming film 72 can adjust the amount of light transmitted as needed. This design helps to simulate the pupillary adjustment function of the human eye, adaptively adjusting the amount of light transmitted according to the intensity of ambient light.

[0068] The imaging lens group 8 is located at the rear end of the optical module, close to the photosensitive element (such as an image sensor). There is at least one imaging lens group 8, and the number of imaging lens groups 8 is related to the thickness of each imaging lens group 8, as well as its optical parameters such as refractive index and curvature. In other words, by properly setting the optical parameters of the imaging lens, an imaging effect similar to that of the human eye's lens can be achieved through a single imaging lens. Alternatively, by properly setting and combining the optical parameters of multiple imaging lenses, an imaging effect similar to that of the human eye's lens can also be achieved through two, three, or more imaging lenses.

[0069] The imaging lens group 8 functions to converge light, similar to the lens of the human eye. It further converges the light, after being adjusted by the corneal-like lens 71 and the dimming film 72, to form a clear image. The design and optimization of the imaging lens group 8 are crucial for improving image resolution and sharpness.

[0070] Furthermore, in order to enable the human-eye-like camera 1 to simulate the rotation of a human eye, the rotation of the human-eye-like camera 1 is driven by the first driving component 2 and the second driving component 3. Specifically, referring to Figure 1, the first driving component 2 drives the human-eye-like camera 1 to rotate in the vertical direction to adjust the pitch angle of the human-eye-like camera 1. The second driving component 3 drives the human-eye-like camera 1 to rotate in the horizontal direction to adjust the horizontal rotation angle of the human-eye-like camera 1.

[0071] In other words, the first drive component 2 is used to adjust the pitch angle of the human-eye camera 1, that is, the rotation angle of the human-eye camera 1 in the vertical direction, to simulate the image seen by the wearer when looking up or down. The second drive component 3 is used to adjust the rotation angle of the human-eye camera 1 in the horizontal direction, to simulate the image seen by the wearer in a horizontal view.

[0072] In addition, the testing device is a device capable of simulating the human eye to acquire images of the device under test and analyzing the image quality. To make the testing device more versatile, referring to Figure 1, the testing device also includes a third driving component 4. The third driving component 4 can adjust the horizontal distance between the two human-eye-like cameras 1. In this way, the testing device can simulate the imaging effect of the device under test worn by wearers with different interpupillary distances, and can analyze the images acquired by the human-eye-like cameras 1 at different distances.

[0073] Therefore, in this embodiment, by defining the optical structure of the human-eye camera 1 and combining the first driving component 2 and the second driving component 3 to achieve the rotation of the human-eye camera 1, the rotation trajectory of the human-eye camera 1 is made to better match the rotation trajectory of the human eye, thereby improving the accuracy of the test equipment in analyzing the images of the XR display device. In addition, the horizontal distance between the two human-eye cameras 1 is adjusted by the third driving component 4, making the test equipment more versatile (simulating the image analysis of the test equipment when wearers with different interpupillary distances wear the test equipment), further improving the accuracy of the test equipment in analyzing the images of the XR display device.

[0074] Optionally, in order to make the rotation of the human-eye-like camera 1 more consistent with the rotation of the human eye, the position of the rotation center of the human-eye-like camera 1 needs to be consistent with the position of the rotation center of the human eye. For example, along the optical axis, the distance between the rotation center of the human-eye-like camera 1 and the foremost lens of the human-eye-like camera 1 can be limited to 13mm to 15mm. Preferably, the distance between the rotation center of the human-eye-like camera 1 and the foremost lens of the human-eye-like camera 1 is 13.5mm.

[0075] Optionally, the distance between the dimming film 72 and the front surface of the corneal-like lens 71 can be limited to allow the human-eye-like camera 1 to more realistically reproduce the imaging process of the human eye. For example, the distance between the dimming film 72 and the front surface of the corneal-like lens 71 is limited to the range of 3mm to 5mm to simulate the distance between the iris and cornea along the eyeball axis. Preferably, the distance between the dimming film 72 and the front surface of the corneal-like lens 71 is 3.5mm to 4.5mm; more preferably, the distance between the dimming film 72 and the front surface of the corneal-like lens 71 is 3.5mm, 3.8mm, or 4mm.

[0076] In one embodiment, referring to FIG1, the first driving component 2 includes a first rotating shaft 20 and a first driving component 21. The first driving component 21 drives the first rotating shaft 20 to rotate, thereby causing the human-eye-like camera 1 to rotate in the vertical direction.

[0077] In this embodiment, referring to FIG1, the first driving component 2 includes a first rotating shaft 20 and a first driving component 21. The first rotating shaft 20 is directly or indirectly connected to the human-eye-like camera 1. The first driving component 21 is a device that provides rotational power, and the first driving component 21 can be a driver of a motor, stepper motor, servo motor, or the like.

[0078] The first drive component 21 is connected to the first rotating shaft 20 through a connector (such as a coupling, gear, etc.). When the first drive component 21 is started, it outputs rotational force, which is transmitted to the first rotating shaft 20 through the connector, thereby driving the human eye-like camera 1 to rotate.

[0079] In one embodiment, referring to FIG1, the second driving component 3 includes a second rotating shaft 30 and a second driving component 31. The second driving component 31 drives the second rotating shaft 30 to rotate, thereby driving the human-eye-like camera 1 and the first driving component 2 to rotate.

[0080] In this embodiment, the second drive assembly 3 includes a second rotating shaft 30 and a second drive component 31. The second rotating shaft 30 is directly or indirectly connected to the human-eye-like camera 1. The second drive component 31 is a device that provides rotational power, and the second drive component 31 can be a driver of a motor, stepper motor, servo motor, or similar type.

[0081] The second drive component 31 is connected to the second rotating shaft 30 through a connector (such as a coupling, gear, etc.). When the second drive component 31 is started, it outputs rotational force, which is transmitted to the second rotating shaft 30 through the connector, thereby driving the human eye-like camera 1 to rotate.

[0082] In a further embodiment, referring to FIG2, the first rotating shaft 20 is located above the second rotating shaft 30 and the first rotating shaft 20 and the second rotating shaft 30 are arranged perpendicularly.

[0083] In this embodiment, the first rotating shaft 20 is located above the second rotating shaft 30 and the two are arranged perpendicularly. When the first rotating shaft 20 and / or the second rotating shaft 30 drive the human-eye camera 1 to rotate around the rotation center of the human-eye camera 1, the human-eye camera 1 can be rotated in multiple directions.

[0084] Furthermore, the axis of the first rotating shaft 20 and the axis of the second rotating shaft 30 intersect at the rotation center of the human eye-like camera 1.

[0085] In this embodiment, the axis of the first rotation axis 20 and the rotation center of the human-eye camera 1 are collinear, as are the axis of the second rotation axis 30 and the rotation center of the human-eye camera 1. This achieves the goal of the axes of the first rotation axis 20 and the second rotation axis 30 intersecting at the rotation center of the human-eye camera 1. This design, by mimicking the physiological structure of the human eye, achieving consistency in the rotation range, and improving rotation accuracy, makes the rotation trajectory of the human-eye camera 1 closer to the natural rotation of the human eye.

[0086] In a further embodiment, the first rotation axis 20 of the first drive assembly 2, which is connected to the two human-eye cameras 1 respectively, is collinear.

[0087] In this embodiment, for the two human-eye-like cameras 1, the rotation of the first human-eye camera 10 and the second human-eye camera 11 must also satisfy the rotation of human eyes. For example, the rotation trajectories of the first human-eye camera 10 and the second human-eye camera 11 satisfy the rotation trajectory of human eyes in the vertical direction.

[0088] Specifically, the two first rotation axes 20 connected to the two human-eye-like cameras 1 are designed to be collinear. This means that the two rotation axes extend in the same straight line, and the rotation centers of the two human-eye-like cameras 1 are set collinearly.

[0089] The collinear arrangement of the first rotation axis 20 ensures that the two cameras maintain a consistent center of rotation when rotating vertically, thus simulating the binocular vision characteristics of the human eye. This design helps reduce the offset and error of the two human-eye-like cameras 1 during rotation, improving the accuracy and reliability of image analysis.

[0090] In a further embodiment, the second rotation axis 30 of the second drive assembly 3, which is connected to the two human-eye-like cameras 1 respectively, is parallel to the second rotation axis 30.

[0091] In this embodiment, for the two human-eye-like cameras 1, the rotation of the first human-eye camera 10 and the second human-eye camera 11 must also satisfy the rotation of human eyes. For example, the rotation trajectories of the first human-eye camera 10 and the second human-eye camera 11 satisfy the rotation trajectory of human eyes in the horizontal direction.

[0092] Specifically, the parallel arrangement of the second rotation axis 30 makes it easier for the two human-eye cameras 1 to achieve synchronous adjustment, and the parallel arrangement of the two second rotation axes 30 makes the horizontal rotation trajectory of the human-eye camera 1 more consistent with the rotation trajectory of the human eye.

[0093] In an optional embodiment, referring to Figures 1 and 2, the test device further includes a camera bracket 5 to support and fix the human eye-like camera 1.

[0094] The connection method between the camera bracket 5 and the human-eye-like camera 1 is described below:

[0095] The test device simulating the human eye also includes a camera bracket 5, and the human-eye-like camera 1 includes a corneal-like lens 71; the human-eye-like camera 1 is fixedly connected to the camera bracket 5, and the corneal-like lens 71 is set away from the camera bracket 5.

[0096] When the humanoid eye camera 1 is mounted on the camera bracket 5, the first rotating shaft 20 can be connected to the camera bracket 5, and the first rotating shaft 20 drives the camera bracket 5 and the humanoid eye camera 1 to rotate in the vertical direction.

[0097] Furthermore, in order to connect the humanoid eye camera 1 and the camera bracket 5, referring to Figure 2, a connection hole 12 is made on the humanoid eye camera 1, and correspondingly, a connection post 51 is provided on the camera bracket 5. The camera bracket 5 and the humanoid eye camera 1 are connected together by the cooperation of the connection hole 12 and the connection post 51.

[0098] For example, referring to FIG2, a plurality of connection holes 12 are provided in the circumference of the human eye-like camera 1. Correspondingly, a plurality of connection posts 51 are provided in the circumference of the camera bracket 5. The reliability of the connection between the two is improved by the cooperation of the connection posts 51 and the connection holes 12.

[0099] For example, the connecting posts 51 on the camera bracket 5 typically have a certain length and diameter to ensure they can be securely inserted into the connecting holes 12 and provide sufficient support. The surface of the connecting posts 51 can be specially treated, such as with threads, chamfers, or coatings, to enhance the stability and durability of the connection.

[0100] In addition, a clearance portion can be provided between adjacent connecting columns 51 to prevent the design of the camera bracket 5 from affecting the image capture effect of the human eye camera 1.

[0101] It should be noted that, in addition to simple embedding, there may be additional fixing mechanisms, such as screws, clips or locking devices, between the connecting hole 12 and the connecting post 51 to ensure that the camera does not loosen during rotation or use.

[0102] In a further embodiment, referring to FIG2, the connecting hole 12 is aligned with the rotation center of the humanoid eye camera 1, which can precisely control the rotation angle and range of the humanoid eye camera 1, thereby meeting the image analysis requirements under different wearing conditions.

[0103] In another alternative embodiment, to support and mount the first drive component 2, the second drive component 3, and the human-eye-like camera 1, the test device also includes a mounting bracket 6, referring to FIG1.

[0104] The structure of mounting bracket 6 is described below:

[0105] Referring to Figure 1, the mounting bracket 6 includes a first bracket, and a first rotating shaft 20 passes through the first bracket and connects to the camera bracket 5.

[0106] Specifically, the connecting post 51 of the camera bracket 5 is provided with a first positioning hole 511, one end of the first rotating shaft 20 is connected to the first positioning hole 511, and the other end is connected to the first driving component 21.

[0107] Please refer to Figure 1. The mounting bracket 6 also includes a second bracket, which has a second positioning hole 61 corresponding to the first positioning hole 511. The testing equipment also includes a connecting shaft 62, one end of which is rotatably disposed in the second positioning hole 61, and the other end of which is rotatably disposed in the first positioning hole 511. The connecting shaft 62 is collinear with the first rotating shaft 20.

[0108] Specifically, the connecting column 51, as part of the camera bracket 5, is connected to the mounting bracket 6 (specifically the second bracket) via the connecting shaft 62 and the first rotating shaft 20, enabling the camera bracket 5 to rotate vertically relative to the mounting bracket 6. Simultaneously, the first rotating shaft 20 and the connecting shaft 62 are collinear, jointly achieving the rotation function of the camera bracket 5 relative to the mounting bracket 6, ensuring the stability of the rotation of the human eye-like camera 1.

[0109] Please refer to Figure 1. The mounting bracket 6 also includes a third bracket, which is located below the first and second brackets, and the first and second brackets are respectively connected to the third bracket; the second rotating shaft 30 passes through the third bracket to drive the mounting bracket 6 to rotate.

[0110] When the second rotating shaft 30 is subjected to an external force, the second rotating shaft 30 can drive the entire mounting bracket 6 (including the first bracket, the second bracket, the camera bracket 5, the human eye camera 1, the first rotating shaft 20, and other components) to rotate in the horizontal direction.

[0111] For example, the connection between the second rotating shaft 30 and the third bracket can be achieved through structures such as bearings and bushings to ensure smooth and stable rotation.

[0112] In a further embodiment, referring to FIG1, the first positioning hole 511 is aligned with the rotation center of the human-eye camera 1, which can ensure the stability of the human-eye camera 1 during rotation, thereby simulating the rotation of the human eye.

[0113] In one embodiment, referring to FIG1, the third drive component 4 includes a base 40 and a base mating part 41, the base mating part 41 being connected to the second drive component 3;

[0114] The base 40 has a sliding groove assembly 42, and the base mating part 41 is slidably disposed within the sliding groove assembly 42.

[0115] In this embodiment, the base fitting 41 acts as a bridge connecting the second drive component 3 and the base 40. Through the base fitting 41, the human-eye-like camera 1 can slide stably along the trajectory of the sliding groove component 42, thereby simulating the visual effect of the human eye at different interpupillary distances.

[0116] For example, the base mating component 41 and the second drive component 3 can be connected by screws, clips, or other means to ensure the stability and reliability of the connection between the two. This connection allows the human-eye camera 1 component to move as the base mating component 41 slides, while maintaining its fixed position relative to the base mating component 41.

[0117] In one embodiment, referring to FIG1, the slide assembly 42 includes a first slide 421 and a second slide 422 arranged parallel to the optical axis of the human eye-like camera 1, one side of the base fitting 41 is disposed in the first slide 421, and the other side of the base fitting 41 is disposed in the second slide 422.

[0118] In this embodiment, the two sides of the base fitting 41 are supported by the first sliding groove 421 and the second sliding groove 422, which significantly improves the stability of the human-eye camera 1 after installation. Minor vibrations, whether horizontal or vertical, can be effectively mitigated through the tight fit between the sliding grooves and the base fitting 41.

[0119] In a more specific embodiment, the distance between the two first grooves 421 is less than or equal to 50 mm, and the distance between the two second grooves 422 is less than or equal to 50 mm.

[0120] Each first slide groove 421 has a first end face 4211 that is furthest from the other first slide groove 421, and the distance between the two first end faces 4211 is greater than 75 mm; and each second slide groove 422 has a second end face 4221 that is furthest from the other second slide groove 422, and the distance between the two second end faces 4221 is greater than 75 mm.

[0121] In one embodiment, referring to FIG1, the base fitting 41 is U-shaped and is upside down on the second drive component 3.

[0122] In this embodiment, the base fitting 41 is designed as a "U"-shaped structure. The "U"-shaped base fitting 41 is upside down on the second drive component 3. The opening of the "U"-shaped structure can conveniently accommodate part of the second drive component 3, making the connection between the human eye camera 1 component and the base fitting 41 more firm and reliable.

[0123] Specifically, the second drive assembly 3 includes a second rotating shaft 30 and a second drive component 31. The base fitting 41 is specifically upside down on the second drive component 31. The second rotating shaft 30 passes through the base fitting 41 and can drive the humanoid eye camera 1 to rotate in the horizontal direction. This installation method not only ensures a tight fit between the humanoid eye camera 1 assembly and the base fitting 41, but also makes the entire structure more compact and stable.

[0124] In one embodiment, referring to FIG1, a protrusion 411 is provided on the vertical surface of the base mating member 41 that mates with the slide groove assembly 42, and the protrusion 411 protrudes from the slide groove edge of the slide groove assembly 42.

[0125] In this embodiment, the vertical surface of the base fitting 41 has a first region located away from the slide groove assembly 42 and a second region located close to the slide groove assembly 42. The protrusion 411 is formed on the second region. The protrusion 411 and the edge of the slide groove play a limiting role, preventing the base fitting 41 from tilting or shifting during the sliding process.

[0126] In one embodiment, referring to FIG3, the imaging lens group 8 includes a first lens 81 disposed adjacent to the dimming film 72 and a first cemented lens group disposed adjacent to the first lens 81.

[0127] The optical power of the first lens 81 is positive;

[0128] The first cemented lens group includes a second lens 82 and a third lens 83, wherein one of the second lens 82 and the third lens 83 has a positive optical power and the other lens has a negative optical power.

[0129] In this embodiment, the imaging lens group 8 includes a first lens 81 and a first cemented lens group. The first lens 81 is designed to have positive optical power, meaning that the first lens 81 is capable of converging light rays. Specifically, the first lens group 81 converges the light rays it receives to transmit them to the first cemented lens group.

[0130] The first cemented lens group consists of a second lens 82 and a third lens 83, which are cemented together to form a single optical element.

[0131] In the second lens 82 and the third lens 83, one lens has positive optical power and the other has negative optical power. This combination of positive and negative optical power lenses effectively corrects chromatic aberration, the difference in focusing position caused by different wavelengths of light passing through the lens. This is crucial for improving image quality, allowing the human-eye-like camera 1 to produce images that closely resemble those of the human eye. Furthermore, the design of the first cemented lens group can reduce other types of aberrations, such as spherical aberration and coma, which affect image sharpness and clarity.

[0132] For example, the optical power of the second lens 82 is positive and the optical power of the third lens 83 is negative; or the optical power of the second lens 82 is negative and the optical power of the third lens 83 is positive. Specifically, referring to Figure 3, the second lens 82 is a biconcave lens with negative optical power, and the third lens 83 is a biconvex lens with positive optical power.

[0133] In one embodiment, referring to FIG3, a filter 73 is disposed between the first lens 81 and the first cemented lens group, the filter 73 being for absorbing or reflecting infrared light.

[0134] In this embodiment, the filter 73 is placed between the first lens 81 and the first cemented lens group. This positioning ensures that light is processed by the filter 73 before passing through the imaging lens group 8.

[0135] The presence of filter 73 does not significantly alter other optical properties of the imaging lens group 8, such as focal length and aberrations. However, it does have a significant impact on spectral composition, improving image quality or meeting specific application requirements by filtering out or attenuating infrared light.

[0136] For example, the filter 73 is a cutoff filter 73, or a specific film layer can be provided on the filter 73 to achieve the effect of absorbing or reflecting infrared light.

[0137] In a further embodiment, referring to FIG3, the imaging lens group 8 further includes a fourth lens 84 and a fifth lens 85 arranged sequentially along the incident optical axis, wherein the fourth lens 84 is located on the light-emitting side of the first cemented lens group; the optical powers of the fourth lens 84 and the fifth lens 85 are opposite.

[0138] In this embodiment, in addition to the imaging lens group 8 including a first lens 81 and a first cemented lens group (a second lens 82 and a third lens 83 cemented together), the imaging lens group 8 further includes a fourth lens 84 and a fifth lens 85 arranged sequentially along the optical axis, with the fourth lens 84 located on the light-emitting side of the first cemented lens group. The fourth lens 84 and the fifth lens 85 have opposite optical powers.

[0139] For example, the optical power of the fourth lens 84 can be positive, and the optical power of the fifth lens 85 can be negative, or the optical power of the fourth lens 84 can be negative, and the optical power of the fifth lens 85 can be positive. Specifically, referring to Figure 3, the fourth lens 84 is a biconvex lens with positive optical power, and the fifth lens 85 is a concave-convex lens with negative optical power.

[0140] Specifically, since the fourth lens 84 and the fifth lens 85 have opposite optical powers, they can compensate for each other's aberrations, such as spherical aberration and coma aberration. This compensation helps improve image quality and reduce image distortion.

[0141] In a further embodiment, referring to FIG3, the imaging lens group 8 further includes a second cemented lens group, which is located between the second lens 82 and the third lens 83; the second cemented lens group includes a sixth lens 86 and a seventh lens 87, wherein one of the sixth lens 86 and the seventh lens 87 has a positive optical power and the other lens has a negative optical power.

[0142] In this embodiment, in addition to the imaging lens group 8 comprising a first lens 81, a first cemented lens group (a second lens 82 and a third lens 83 cemented together), a fourth lens 84, and a fifth lens 85, the imaging lens group 8 further includes a second cemented lens group. The second cemented lens group is located between the fourth lens 84 and the fifth lens 85; the second cemented lens group includes a sixth lens 86 and a seventh lens 87, wherein one of the sixth lens 86 and the seventh lens 87 has a positive optical power, and the other lens has a negative optical power.

[0143] Specifically, the design of the sixth lens 86 and the seventh lens 87 with opposite optical powers allows them to compensate for each other's aberrations, such as spherical aberration and coma. This compensation helps reduce image distortion during the imaging process and improves image sharpness.

[0144] Furthermore, the imaging performance of the imaging lens group 8 can be further optimized by adjusting parameters such as the curvature and refractive index of the sixth lens 86 and the seventh lens 87. For example, this can improve image resolution, contrast, and color reproduction.

[0145] For example, the optical power of the sixth lens 86 is positive and the optical power of the seventh lens 87 is negative, or the optical power of the sixth lens 86 is negative and the optical power of the seventh lens 87 is positive. Specifically, referring to Figure 3, the sixth lens 86 is a convex-concave lens with negative optical power, and the seventh lens 87 is a biconvex lens with positive optical power.

[0146] In an optional embodiment, the human-eye-like camera 1 further includes a protective glass 74 disposed furthest from the corneal-like lens 71. In this embodiment, the human-eye-like camera 1 also includes a protective glass 74 for protecting other sensors such as the photosensitive chip.

[0147] In one embodiment, the light-transmitting area of ​​the dimming film 72 is adjusted electronically.

[0148] In this embodiment, by controlling the light-transmitting area of ​​the dimming film 72 electronically, the amount of light transmitted can be precisely adjusted, thereby simulating the response of the human eye pupil under different lighting conditions.

[0149] The dimming film 72 is typically made by injecting a liquid crystal / polymer hybrid material between two transparent conductive films. In the absence of an electric field, the dimming film 72 is opaque. When an alternating current is applied, the liquid crystal molecules align in an ordered manner, and the dimming film 72 transitions from the opaque state (OFF state) to the transparent state (ON state). Through the application of an electric field, rapid transitions between the ON and OFF states can be achieved.

[0150] Therefore, the dimming film 72 can simulate this light-sensing adaptive adjustment mechanism through electronic control. When the external light changes, the control system can sense and adjust the voltage or current applied to the dimming film 72, thereby changing the size and shape of its light-transmitting area and achieving precise control over the amount of light transmitted.

[0151] In one embodiment, the anterior surface curvature of the corneal lens 71 ranges from 7.5 mm to 8.0 mm, and the posterior surface curvature ranges from 6.5 mm to 7.0 mm.

[0152] In this embodiment, the curvature design of the corneal-like lens 71 has a significant impact on light focusing and image quality. By selecting a curvature range similar to that of the human cornea, the human-eye-like camera 1 can more closely approximate the perception of the human eye, ensuring that light is correctly focused when passing through the lens, thereby forming a clear image.

[0153] Preferably, the anterior surface curvature of the corneal lens 71 is 7.8 mm, and the posterior surface curvature of the corneal lens 71 is 6.7 mm.

[0154] In a specific embodiment, referring to FIG3, the human eye-like camera 1 includes, along the incident optical axis, a corneal-like lens 71, a first lens 81, a filter 73, a first cemented lens group (a second lens 82 and a third lens 83 cemented together), a fourth lens 84, a second cemented lens group (a sixth lens 86 and a seventh lens 87), and a fifth lens 85.

[0155] Specifically, the optical parameters of the corneal lens 71 are as follows: focal length: -154.057mm; front surface curvature: 7.8mm; rear surface curvature: 6.7mm; refractive index: 1.5167; Abbe number: 64.199; glass material: H-K9L.

[0156] The optical parameters of the first lens 81 are as follows: focal length: 27.6mm; front surface curvature: 899.5mm; rear surface curvature: 28.79mm; refractive index: 1.9; Abbe number: 30.1; glass material: HZLAF92.

[0157] The optical parameters of the second lens 82 are as follows: focal length: -4.41mm; front surface curvature: 5.62mm; rear surface curvature: 8.868mm; refractive index: 1.7552; Abbe number: 27.5; glass material: ZF6.

[0158] The optical parameters of the third lens 83 are as follows: focal length: -6.23mm; front surface curvature: 8.868mm; rear surface curvature: 7.907mm; refractive index: 1.52; Abbe number: 38; glass material: HLAK52.

[0159] The optical parameters of the fourth lens 84 are as follows: focal length: 10.89mm; front surface curvature: 15.74mm; rear surface curvature: 26.61mm; refractive index: 1.923; Abbe number: 21; glass material: HZF62.

[0160] The optical parameters of the sixth lens 86 are as follows: focal length: -9mm; front surface curvature: 23.9mm; rear surface curvature: 5.525mm; refractive index: 1.8063; Abbe number: 25.38; glass material: ZF7.

[0161] The optical parameters of the seventh lens 87 are as follows: focal length: 10.23mm; front surface curvature: 5.525mm; rear surface curvature: 45.2mm; refractive index: 1.72; Abbe number: 55; glass material: HZPK5.

[0162] Optical parameters of the fifth lens 85: focal length: -23.76mm; front surface curvature: 7.543mm; rear surface curvature: 22.22mm; refractive index: 1.5164; Abbe number: 60.5; glass material: HQK3L.

[0163] This type of human eye camera 1 can simulate the imaging process of the human eye and achieve an imaging effect similar to that of the human eye.

[0164] In this embodiment, referring to Figures 4a-4h, there are dot array diagrams of the bionic eye optical module focusing at infinity, 4m, 3m, 2m, 1.44m, 1.2m, 1m and 0.2m. The size of each field of view dot array diagram is close to the Airy disk.

[0165] In this embodiment, referring to Figures 5a-5e, the MTF of the bionic eye optical module at 0, 0.5, 0.7, and 1 field of view is shown. Because the field of view of the bionic eye optical module is reduced to 35°, the focal length needs to be increased to match the sensor, resulting in an increase in the F-number and a decrease in the diffraction limit. When focusing at infinity (-0.25m), the MTF of the 0-0.7 field of view at 227 lp / mm is generally above 0.5; when focusing at 0.2m, the resolution decreases slightly, but the MTF of the 0-0.5 field of view at 227 lp / mm is generally above 0.5; throughout the focusing process, the resolution of the edge field of view at 227 lp / mm is between 0.3 and 0.4.

[0166] In this embodiment, referring to Figure 6, the relative illumination across the entire field of view is above 85%.

[0167] Secondly, embodiments of this application also provide a testing system. The testing system includes:

[0168] The test equipment as described in the first aspect is used to acquire image information of the device under test;

[0169] A signal processing device for receiving image information acquired by the test device;

[0170] The result analysis device analyzes the device under test based on the motion data of the human eye-like camera 1 and the image information transmitted to it by the signal processing device.

[0171] In this embodiment, a test device including a human eye-like camera 1 is applied to the test system, which can analyze the image quality of the device under test.

[0172] Specifically, the test equipment simulating the human eye is used to simulate the imaging effect of different wearers wearing XR display devices (the devices under test), thereby obtaining image information of the XR display devices under different test conditions.

[0173] The signal processing device is responsible for receiving image information from the simulated human eye testing device (specifically, image information acquired under different testing conditions). This device may include an FPGA module. Upon receiving the image information, the signal processing device preprocesses it, including but not limited to noise reduction, enhancement, and compression. These processing steps help improve image quality and provide more valuable data for subsequent analysis.

[0174] The results analysis device utilizes motion data from the human-eye-like camera 1 and image information transmitted by the signal processing device to perform a comprehensive and in-depth analysis of the device under test. Through analysis, the results analysis device can evaluate issues related to the performance, user experience, and compatibility of the device under test. For example, the results analysis device can be an external device (such as a computer) or a built-in module of the test device.

[0175] This system, by simulating the human binocular vision system, can more realistically reflect the performance of the device under test in actual use.

[0176] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0177] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A testing device, characterized in that, include: Two human-eye-like cameras (1), each of the human-eye-like cameras (1) includes a corneal-like lens (71), a dimming film (72), and an imaging lens group (8), the imaging lens group (8) including at least one imaging lens, the dimming film (72) being located behind the corneal-like lens (71) to simulate the pupil of a human eye, and the imaging lens group (8) being located on the light-emitting side of the dimming film (72); a first driving component (2) for driving the human-eye-like camera (1) to rotate in the vertical direction; a second driving component (3) for driving the human-eye-like camera (1) to rotate in the horizontal direction; and a third driving component (4) for adjusting the horizontal spacing between the two human-eye-like cameras (1).

2. The testing equipment according to claim 1, characterized in that, The first driving component (2) includes a first rotating shaft (20) and a first driving component (21). The first driving component (21) drives the first rotating shaft (20) to rotate, thereby causing the human-eye-like camera (1) to rotate in the vertical direction.

3. The testing equipment according to claim 2, characterized in that, The second drive assembly (3) includes a second rotating shaft (30) and a second drive component (31). The second drive component (31) drives the second rotating shaft (30) to rotate, thereby driving the human-eye camera (1) and the first drive assembly (2) to rotate.

4. The testing equipment according to claim 3, characterized in that, The first rotating shaft (20) is located above the second rotating shaft (30), and the first rotating shaft (20) and the second rotating shaft (30) are arranged perpendicularly.

5. The testing equipment according to claim 3, characterized in that, The axis of the first rotating shaft (20) and the axis of the second rotating shaft (30) intersect at the rotation center of the human eye-like camera (1).

6. The testing equipment according to claim 1, characterized in that, The first rotation axis (20) of the first drive assembly (2) connected to the two human-eye cameras (1) is collinear.

7. The testing equipment according to claim 1, characterized in that, The second rotation axis (30) of the second drive assembly (3) connected to the two human-eye cameras (1) is parallel to the second rotation axis (30).

8. The testing equipment according to claim 1, characterized in that, The third drive assembly (4) includes a base (40) and a base fitting (41), the base fitting (41) being connected to the second drive assembly (3); the base (40) has a sliding groove assembly (42), and the base fitting (41) is slidably disposed within the sliding groove assembly (42).

9. The testing equipment according to claim 8, characterized in that, The slide assembly (42) includes a first slide (421) and a second slide (422) arranged in parallel. One side of the base fitting (41) is disposed in the first slide (421), and the other side of the base fitting (41) is disposed in the second slide (422).

10. The testing equipment according to claim 8, characterized in that, The base fitting (41) has a "U" shaped structure and is upside down on the second drive assembly (3).

11. The testing equipment according to claim 8, characterized in that, The base fitting (41) has a protrusion (411) on its vertical surface that mates with the slide assembly (42), and the protrusion (411) protrudes from the edge of the slide of the slide assembly (42).

12. The testing equipment according to claim 1, characterized in that, The imaging lens group (8) includes a first lens (81) disposed adjacent to the dimming film (72) and a first cemented lens group disposed adjacent to the first lens (81); the optical power of the first lens (81) is positive; the first cemented lens group includes a second lens (82) and a third lens (83), wherein the optical power of one of the second lens (82) and the third lens (83) is positive and the optical power of the other lens is negative.

13. The testing equipment according to claim 12, characterized in that, A filter (73) is disposed between the first lens (81) and the first cemented lens group, the filter (73) being used to absorb or reflect infrared light.

14. The testing equipment according to claim 13, characterized in that, The imaging lens group (8) further includes a fourth lens (84) and a fifth lens (85) arranged sequentially along the incident optical axis. The fourth lens (84) is located on the light-emitting side of the first cemented lens group. The optical powers of the fourth lens (84) and the fifth lens (85) are opposite.

15. The testing equipment according to claim 14, characterized in that, The imaging lens group (8) further includes a second cemented lens group, which is located between the second lens (82) and the third lens (83); the second cemented lens group includes a sixth lens (86) and a seventh lens (87), wherein one of the sixth lens (86) and the seventh lens (87) has a positive optical power and the other lens has a negative optical power.

16. The testing equipment according to claim 1, characterized in that, The light-transmitting area of ​​the dimming film (72) is adjusted by electronic control.

17. The testing equipment according to claim 1, characterized in that, The anterior surface curvature range of the corneal lens (71) is 7.5mm to 8.0mm, and the posterior surface curvature range is 6.5mm to 7.0mm.

18. A testing system, characterized in that, include: The testing device as described in any one of claims 1-17 is used to acquire image information of the device under test; A signal processing device for receiving image information acquired by the test device; The result analysis device analyzes the device under test based on the motion data of the human eye-like camera (1) and the image information transmitted to it by the signal processing device.

Images