Optical module, alignment device and alignment method thereof, storage medium and electronic equipment

Abstract

The invention provides an optical module, an alignment device thereof, an alignment method, a storage medium and electronic equipment, the optical module comprises a display screen and a lens assembly, the alignment device is provided with a preset station, the alignment device comprises a detection module, the detection module is arranged on one side of the preset station, and the detection module is used for detecting the preset station; the detection module is configured to be capable of detecting the current VID value of the optical module located at the preset station; and the adjusting module is suitable for being matched with the optical module at the preset station and is configured to be capable of adjusting the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value so as to align the optical module.

Description

Technical Field

[0001] The present application relates to the technical field of optical module assembly, and more specifically, to an optical module and an alignment device, an alignment method, a storage medium and an electronic device thereof. Background Art

[0002] In the manufacturing process of VR / AR devices, precise alignment of the lens assembly of the optical module and the display screen is crucial. Currently, six-degree-of-freedom active alignment technology is used to achieve high-precision assembly, but this method relies on the CTF curve of imaging quality, and the direct correlation with the VID (virtual image distance) value is unclear, resulting in the inability to strictly guarantee assembly accuracy. In addition, in order to generate the CTF curve, the display screen needs to be scanned on the Z axis, which is not only time-consuming but also limits production efficiency. Summary of the invention

[0003] The present application provides a new technical solution for an alignment device of an optical module, which can at least solve at least one of the problems of poor alignment accuracy and low production efficiency of existing optical modules.

[0004] The present application also provides a new technical solution for an alignment method of an optical module.

[0005] The present application also provides a new technical solution for a computer-readable storage medium.

[0006] The present application also provides a new technical solution for an optical module.

[0007] The present application also provides a new technical solution for electronic equipment.

[0008] According to a first aspect of the present application, an alignment device for an optical module is provided, the optical module comprising a display screen and a lens assembly, the alignment device being provided with a preset workstation, the alignment device comprising: a detection module, the detection module being arranged at one side of the preset workstation, the detection module being configured to detect a current VID value of the optical module located at the preset workstation; an adjustment module, the adjustment module being suitable for cooperating with the optical module at the preset workstation, and being configured to adjust the relative position of the display screen and the lens assembly according to a current VID value and a preset VID value, so as to align the optical module.

[0009] Optionally, the detection module includes at least one detection module, and the detection module includes: a camera, the camera is provided with a lens, the lens faces the preset station, and the camera is suitable for collecting the virtual image generated by the optical module located at the preset station; a driving member, the driving member is connected to the camera or the lens, and the driving member is used to drive the camera or the lens to move along the axial direction of the lens, so that the camera can collect the virtual image of the same size when the position of the virtual image changes;

[0010] The output of the driving component corresponds to a corresponding VID value, so that the detection module can obtain a current VID value according to the output of the driving component.

[0011] Optionally, the detection module includes: multiple detection modules and a dome, the inner wall of the dome faces the predetermined workstation, multiple detection modules are arranged on the inner wall of the dome, one detection module is located in the center of the dome, and the remaining detection modules are arranged around the central detection module.

[0012] Optionally, the driving member is configured as a voice coil motor.

[0013] Optionally, the adjustment module includes: a first motion platform, wherein the first motion platform is configured to carry and / or fix the display screen and adjust the position of the display screen according to a current VID value and a preset VID value.

[0014] Optionally, the adjustment module includes: a clamping member, which is suitable for clamping the lens assembly; a second motion platform, the clamping member is arranged on the second motion platform, and the second motion platform is configured to be able to adjust the position of the lens assembly according to a current VID value and a preset VID value.

[0015] Optionally, the adjustment module further includes: a third motion platform, wherein the third motion platform is configured to be able to carry and / or fix the display screen and to be able to adjust the position of the display screen.

[0016] According to a second aspect of the present application, a method for aligning an optical module is provided, wherein the optical module includes a display screen and a lens assembly, and is characterized in that the alignment method includes: loading the optical module to a preset workstation; detecting a current VID value of the optical module; and adjusting the relative position of the display screen and the lens assembly according to the current VID value and a preset VID value to align the optical module.

[0017] Optionally, the step of adjusting the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value to align the optical module includes: calculating the current position of the display screen relative to the lens assembly according to the current VID value; calculating the design position of the display screen relative to the lens assembly according to the preset VID value; calculating the required adjustment amount of the display screen relative to the lens assembly according to the current position and the design position; and adjusting the relative position of the display screen and the lens assembly according to the required adjustment amount.

[0018] Optionally, the step of adjusting the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value to align the optical module also includes: measuring the current VID value of the adjusted optical module and comparing it with the preset VID value; if the VID value comparison result is within a predetermined range, an aligned optical module is obtained; if the VID value comparison result is not within the predetermined range, repeating the above steps iteratively until the VID value comparison result is within the predetermined range.

[0019] Optionally, the step of detecting the current VID value of the optical module is: detecting the current VID value of the optical module in multiple fields of view.

[0020] According to a third aspect of the present application, a computer-readable storage medium is provided, wherein a computer program is stored in the storage medium, and the computer program is configured to execute any of the alignment methods described above when running.

[0021] According to a fourth aspect of the present application, an optical module is provided, wherein the optical module is aligned by the alignment device described in any one of the above items, or by the alignment method described in any one of the above items, and assembled to obtain

[0022] According to a fifth aspect of the present application, an electronic device is provided, comprising the above-mentioned optical module.

[0023] According to the alignment device of the present application, the detection module is set up to automatically detect the current VID value of the optical module, and the adjustment module is set up to automatically adjust the relative positions of the display screen and the lens assembly according to the current VID value of the optical module and the preset VID value, thereby ensuring that the VID value of the optical module meets the design requirements. This automated adjustment mechanism not only improves the alignment accuracy of the optical module, ensures the quality and performance of the optical module, but also significantly improves production efficiency.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 is a schematic structural diagram of an alignment device according to an embodiment provided by the present application;

[0027] Figure 2 is a schematic structural diagram of an alignment device according to another embodiment provided by the present application;

[0028] Figure 3It is a schematic structural diagram of an alignment device according to another embodiment provided in the present application.

[0029] Reference numerals

[0030] 100. Alignment device;

[0031] 10. Detection module; 11. Detection module; 111. Camera; 112. Lens; 113. Driving part; 12. Dome;

[0032] 20. Adjustment module; 21. First motion platform; 22. Clamping member; 23. Second motion platform; 24. Third motion platform;

[0033] 200, optical module; 210, display screen; 220, lens assembly. DETAILED DESCRIPTION

[0034] 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 of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0036] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] The following first describes in detail the alignment device 100 of the optical module 200 according to the embodiment of the present application with reference to the drawings.

[0040] like Figures 1 to 3 As shown, according to the alignment device 100 of the optical module 200 of the embodiment of the present application, the optical module 200 includes a display screen 210 and a lens assembly 220 , the alignment device 100 is provided with a preset workstation, and the alignment device 100 includes: a detection module 10 and an adjustment module 20 .

[0041] Specifically, the detection module 10 is arranged on one side of the preset workstation, and the detection module 10 is configured to measure the current VID value of the optical module 200 located at the preset workstation. The adjustment module 20 is suitable for cooperating with the optical module 200 at the preset workstation, and is configured to adjust the relative position of the display screen 210 and the lens assembly 220 according to the current VID value and the preset VID value to align the optical module 200.

[0042] In other words, if Figures 1 to 3 As shown, the alignment device 100 according to the embodiment of the present application is used to align the optical module 200 having a display screen 210 and a lens assembly 220. The alignment device 100 has a preset station (i.e., a station for assembling the optical module 200). The alignment device 100 mainly includes a detection module 10 and an adjustment module 20, wherein the detection module 10 is arranged on one side of the preset station (e.g., the upper side of the preset station), and the current VID value of the optical module 200 located at the preset station can be detected by the detection module 10; the adjustment module 20 The adjusting module 20 is spaced apart from the detecting module 10, and the adjusting module 20 can cooperate with the optical module 200. For example, the adjusting module 20 can cooperate with the display screen 210 of the optical module 200 to adjust the relative position of the display screen 210 and the lens assembly 220 by adjusting the position of the display screen 210, or the adjusting module 20 can cooperate with the lens assembly 220 of the optical module 200 to adjust the relative position of the display screen 210 and the lens assembly 220 by adjusting the position of the lens assembly 220.

[0043] In this embodiment, the adjustment module 20 is electrically connected to the detection module 10, and the adjustment module 20 can adjust the relative position of the display screen 210 and the lens assembly 220 according to the current VID value of the optical module 200 and the preset VID value (i.e., the VID design value of the optical module 200), so that the current VID value of the optical module 200 meets the design standard of the optical module 200, thereby achieving precise alignment of the optical module 200.

[0044] Therefore, according to the alignment device 100 provided in this embodiment, the detection module 10 is set up to automatically detect the current VID value of the optical module 200, and the adjustment module 20 is set up to automatically adjust the relative positions of the display screen 210 and the lens assembly 220 according to the current VID value of the optical module 200 and the preset VID value, thereby ensuring that the VID value of the optical module 200 meets the design requirements. This automated adjustment mechanism not only improves the alignment accuracy of the optical module 200, ensures the quality and performance of the optical module 200, but also significantly improves production efficiency.

[0045] In some embodiments of the present application, the detection module 10 includes at least one detection module 11, and the detection module 11 includes: a camera 111, the camera 111 is provided with a lens 112, the lens 112 is facing a preset workstation, and the camera 111 is suitable for collecting a virtual image generated by the optical module 200 located at the preset workstation; a driving member 113, the driving member 113 is connected to the camera 111 or the lens 112, and the driving member 113 is used to drive the camera 111 or the lens 112 to move along the axial direction of the lens 112, so that the camera 111 can collect a virtual image of the same size when the position of the virtual image changes; the output of the driving member 113 corresponds to the corresponding VID value, so that the detection module 11 can obtain the current VID value according to the output of the driving member 113.

[0046] That is to say, Figures 1 to 3 As shown, the detection module 10 has one or more detection modules 11, and a detection module 11 is used as an example for specific description. The detection module 11 mainly includes a camera 111 and a driving member 113, wherein the camera 111 is provided with a lens 112, and the lens 112 is a high-image quality lens 112, and the lens 112 of the camera 111 faces a preset position. When the optical module 200 is located at the preset position, the virtual image generated by the optical module 200 can be collected by the camera 111.

[0047] like Figures 1 to 3 As shown, the output end of the driving member 113 is fixedly connected to the camera 111, and the output end of the driving member 113 is movable along the axial direction of the lens 112, so that the driving member 113 can drive the camera 111 to move along the axial direction of the lens 112. Therefore, when the virtual image of the optical module 200 is located at different positions, the detection module 10 can change the position of the camera 111 by controlling the driving member 113, so that the size of the virtual image collected by the camera 111 will not change with the change of the virtual image position, thereby ensuring that the size of the collected virtual image remains consistent. Alternatively, the driving member 113 is arranged on the camera 111, and the output end of the driving member 113 is fixedly connected to the lens 112, and the output end of the driving member 113 is movable along the axial direction of the lens 112, so that the driving member 113 can drive the lens 112 to move along its axial direction. Therefore, when the virtual image of the optical module 200 is located at different positions, the detection module 10 can change the position of the lens 112 by controlling the driving member 113, so that the size of the virtual image captured by the camera 111 will not change with the change of the virtual image position, thereby ensuring that the size of the captured virtual image remains consistent.

[0048] The output of the driver 113 corresponds to the VID value, that is, one output of the driver 113 corresponds to one VID value, so that the controller or processor of the detection module 11 can determine the current VID value of the optical module 200 based on the output of the driver 113.

[0049] In this embodiment, when detecting the VID value, the camera 111 collects a virtual image of a predetermined size, and the detection module 11 can determine the current VID value of the optical module 200 based on the output of the driver 113. The detection process is efficient and direct, which helps to improve the production efficiency and quality of the optical module 200. In addition, the structure is simple and easy to produce and maintain.

[0050] It should be noted that when the number of the detection module 11 is one, the alignment of the optical module with a smaller FOV can be satisfied, and the detection module 11 can also achieve VID measurement of the full field of view by using a large field of view camera.

[0051] In some examples of the present application, the camera 111 is an industrial camera, such as a CCD camera, and the lens 112 of the camera 111 may be a fixed-focus lens.

[0052] According to one embodiment of the present application, the detection module 10 includes: multiple detection modules 11 and a dome 12, the inner wall of the dome 12 faces the predetermined workstation, the multiple detection modules 11 are arranged on the inner wall of the dome 12, one detection module 11 is located in the center of the dome 12, and the remaining detection modules 11 are arranged around the central detection module 11.

[0053] Specifically, Figure 1 and Figure 2 As shown, the alignment device 100 according to the embodiment of the present application mainly includes a plurality of detection modules 11 and a dome 12. The number of the detection modules 11 can be determined according to actual needs. The concave portion of the dome 12 faces the predetermined workstation, so that the inner wall of the dome 12 faces the predetermined workstation. In the embodiment, the number of the detection modules 11 is five, one of which is installed at the central position of the inner wall of the dome 12 as a central field of view detection module 11 to detect the VID value of the optical module 200 in the central field of view, and the remaining four detection modules 11 are installed on the inner wall of the dome 12, and the four detection modules 11 are located at the periphery of the central field of view detection module 11, that is, the four detection modules 11 are located at the edge of the dome 12 as edge field of view detection modules 11 to detect the VID value of the optical module 200 in four edge fields of view.

[0054] Therefore, according to the alignment device 100 of the embodiment of the present application, different field of view VID values ​​of the optical module 200 can be detected by setting up multiple detection modules 11, and the adjustment module 20 can adjust the relative position of the display screen 210 and the lens assembly 220 according to the VID value detected by each detection module 11, which can effectively improve the alignment degree of the optical module 200, and when one of the detection modules 11 is damaged, the adjustment module 20 can adjust the relative position of the display screen 210 and the lens assembly 220 according to the VID value detected by the remaining detection modules 11, thereby effectively improving the reliability of the alignment device 100.

[0055] In some embodiments of the present application, the driving member 113 is configured as a voice coil motor.

[0056] That is to say, the driving member 113 may be a voice coil motor, which is installed on the dome 12 , and the camera 111 is fixedly connected to the output end of the voice coil motor. The voice coil motor can drive the camera 111 to move along the axial direction of the lens 112 .

[0057] In this embodiment, the high precision and fast response characteristics of the voice coil motor are utilized to improve the adjustment speed and accuracy of the position of the camera 111, making the alignment process faster and more accurate.

[0058] According to one embodiment of the present application, the adjustment module 20 includes: a first motion platform 21, which is configured to carry and / or fix the display screen 210 and adjust the position of the display screen 210 according to the current VID value and the preset VID value.

[0059] Specifically, Figure 1 and Figure 3 As shown, the adjustment module 20 mainly includes a first motion platform 21, and the first motion platform 21 can be a multi-degree-of-freedom motion platform, such as a six-degree-of-freedom motion platform. The first motion platform 21 can be set below the preset station, and the display screen 210 of the optical module 200 can be carried by the first motion platform 21. When in use, the lens assembly 220 of the optical module 200 can be fixed at the preset station by a manipulator of an external device, and the first motion platform 21 can adjust the position of the display screen 210 according to the current VID value and the preset VID value, that is, the controller of the adjustment module 20 can use the optical image relationship and the optical image relationship to adjust the position of the display screen 210. The design position Z1 of the display screen 210 relative to the lens assembly 220 can be calculated by using the current VID value of the optical module 200. The design position Z2 of the display screen 210 relative to the lens assembly 220 can also be calculated by using the optical object-image relationship and the preset VID value of the optical module 200. The required adjustment amount △Z of the display screen 210 relative to the lens assembly 220 can be calculated by Z1 and Z2, and the first motion platform 21 can adjust the position of the display screen 210 according to the adjustment amount △Z, thereby adjusting the relative position of the display screen 210 and the lens assembly 220, thereby achieving precise alignment of the optical module 200. After the optical module 200 is assembled, the assembled optical module 200 can be removed from the preset workstation by the manipulator that fixes the lens assembly 220.

[0060] Furthermore, the first motion platform 21 is provided with a fixing device for fixing the display screen 210 , thereby effectively preventing the display screen 210 from being displaced during the alignment process, and ensuring the alignment accuracy of the optical module 200 .

[0061] In some embodiments of the present application, the adjustment module 20 includes: a clamping member 22, the clamping member 22 is suitable for clamping the lens assembly 220; a second motion platform 23, the clamping member 22 is arranged on the second motion platform 23, and the second motion platform 23 is configured to be able to adjust the position of the lens assembly 220 according to the current VID value and the preset VID value.

[0062] That is to say, Figure 2 As shown, the adjustment module 20 mainly includes a second motion platform 23, and the second motion platform 23 can be a multi-degree-of-freedom motion platform, such as a six-degree-of-freedom motion platform. The second motion platform 23 can be set on one side of a preset workstation, and the second motion platform 23 is provided with a clamping member 22, such as an electric clamping claw, and the clamping member 22 can controllably clamp the lens assembly 220 located at the preset workstation. When in use, the display screen 210 of the optical module 200 can be fixed at the preset workstation by a manipulator of an external device, and the second motion platform 23 can adjust the position of the clamping member 22 according to the current VID value of the optical module 200 and the preset VID value, that is, the adjustment module 20 can calculate the required adjustment amount △Z=Z2-Z1 of the display screen 210 relative to the lens assembly 220 through Z1 and Z2, and the second motion platform 23 can adjust the position of the clamping member 22 according to the adjustment amount △Z.

[0063] Thus, the position of the lens assembly 220 is adjusted, thereby adjusting the relative position of the display screen 210 and the lens assembly 220, thereby achieving accurate alignment of the optical module 200. After the optical module 200 is assembled, the assembled optical module 200 can be removed from the preset workstation by the robot that fixes the lens assembly 220.

[0064] According to one embodiment of the present application, the adjustment module 20 further includes: a third motion platform 24 , which is configured to be able to carry and / or fix the display screen 210 , and to be able to adjust the position of the display screen 210 .

[0065] In other words, Figure 2As shown, the adjustment module 20 mainly includes a second motion platform 23 and a third motion platform 24. The third motion platform 24 can be a multi-degree-of-freedom motion platform, such as a six-degree-of-freedom motion platform. The third motion platform 24 can be set below a preset workstation. The display screen 210 of the optical module 200 can be carried by the third motion platform 24. When in use, the initial position of the display screen 210 can be adjusted by the third motion platform 24, and the relative position between the display screen 210 and the lens assembly 220 can be controlled within the adjustable range of the second motion platform 23, that is, the controller of the adjustment module 20 can calculate the required adjustment amount △Z=Z2-Z1 of the display screen 210 relative to the lens assembly 220 through Z1 and Z2, and the third motion platform 23 can adjust the initial position according to △Z. The position of the display screen 210 is adjusted step by step, which is conducive to aligning the optical module 200; moreover, the third motion platform 24 can also adjust the position of the display screen 210 according to the current VID value of the optical module 200 and the preset VID value, that is, the controller of the adjustment module 20 can calculate the required adjustment amount △Z=Z2-Z1 of the display screen 210 relative to the lens assembly 220 through Z1 and Z2, and the third motion platform 23 can adjust the position of the display screen 210 according to the adjustment amount △Z, so as to adjust the relative position of the display screen 210 and the lens assembly 220, thereby realizing the precise alignment of the optical module 200, and then the third motion platform 24 can take over the adjustment task when the second motion platform 23 fails, thereby ensuring the continuity of the alignment process and the production quality of the optical module 200.

[0066] It should be noted that when the detection module 10 has multiple detection modules 11, the multiple detection modules 11 are respectively used to detect the VID values ​​of different fields of view of the optical module 200. The controller of the adjustment module 20 can use the optical object-image relationship and the current VID values ​​of multiple fields of view of the optical module 200 and the preset VID value corresponding to each field of view to calculate the adjustment amount of the corresponding direction. The first motion platform 21, the second motion platform 23 and / or the third motion platform 24 can adjust the relative position of the display screen 210 and the lens assembly 220 in one or more directions according to the adjustment amount.

[0067] In summary, according to the alignment device 100 provided in this embodiment, the detection module 10 is set up to automatically detect the current VID value of the optical module 200, and the adjustment module 20 is set up to automatically adjust the relative positions of the display screen 210 and the lens assembly 220 according to the current VID value of the optical module 200 and the preset VID value, thereby ensuring that the VID value of the optical module 200 meets the design requirements. This automated adjustment mechanism not only improves the alignment accuracy of the optical module 200, ensures the quality and performance of the optical module 200, but also significantly improves production efficiency.

[0068] The embodiment of the present application further provides an alignment method of an optical module 200 , the optical module 200 includes a display screen 210 and a lens assembly 220 , the alignment method can be implemented by the alignment device 100 described in any of the above embodiments, and the alignment method includes: S100 to S300 .

[0069] S100, loading the optical module 200 to a preset station;

[0070] In detail, the optical module 200 (ie, the display screen 210 and the lens assembly 220 ) is loaded to a preset station manually or by using a loading device such as a robot, and the display screen 210 and / or the lens assembly 220 are matched with the adjustment module 20 .

[0071] S200, measuring the current VID value of the optical module 200;

[0072] Specifically, the optical module 200 is controlled to generate a virtual image, and then the virtual image of the optical module 200 is collected by the camera 111 of the detection module 10 , and the corresponding VID value (ie, the current VID value) is obtained according to the output of the driving member 113 .

[0073] S300 , adjusting the relative positions of the display screen 210 and the lens assembly 220 according to the current VID value and the preset VID value to align the optical module 200 .

[0074] That is to say, the adjustment module 20 can adjust the position of the display screen 210 or the lens assembly 220 according to the current VID value of the optical module 200 and the preset VID value, so as to adjust the relative position of the display screen 210 and the lens assembly 220, so that the current VID value of the optical module 200 meets the design standard of the optical module 200, thereby achieving precise alignment of the optical module 200.

[0075] Therefore, according to the alignment method of the optical module 200 of the embodiment of the present application, by detecting the current VID value of the optical module 200 and adjusting the relative position of the display screen 210 and the lens assembly 220 according to the current VID value of the optical module 200 and the preset VID value, it can be ensured that the VID value of the optical module 200 meets the design requirements, and the alignment accuracy of the optical module 200 is significantly improved, thereby ensuring the quality and performance of the optical module 200.

[0076] In some embodiments of the present application, the step of adjusting the relative positions of the display screen 210 and the lens assembly 220 according to the current VID value and the preset VID value to align the optical module 200 includes: S310 to S340.

[0077] S310, calculating the current position of the display screen 210 relative to the lens assembly 220 according to the current VID value;

[0078] In detail, the controller of the adjustment module 20 can calculate the current position Z1 of the display screen 210 relative to the lens assembly 220 by using the optical object-image relationship and the current VID value of the optical module 200 .

[0079] S320, calculating the design position of the display screen 210 relative to the lens assembly 220 according to the preset VID value;

[0080] Specifically, the controller of the adjustment module 20 can calculate the design position Z2 of the display screen 210 relative to the lens assembly 220 by using the optical object-image relationship and the preset VID value of the optical module 200 .

[0081] S330, calculating the required adjustment amount of the display screen 210 relative to the lens assembly 220 according to the current position and the design position;

[0082] In detail, the controller of the adjustment module 20 can calculate the required adjustment amount ΔZ=Z2-Z1 of the display screen 210 relative to the lens assembly 220 through Z1 and Z2.

[0083] S340, adjusting the relative positions of the display screen 210 and the lens assembly 220 according to the required adjustment amount.

[0084] Specifically, the adjustment module 20 can adjust the position of the display screen 210 or the position of the lens assembly 220 according to the required adjustment amount to adjust the relative position of the display screen 210 and the lens assembly 220 .

[0085] According to an embodiment of the present application, the step of adjusting the relative positions of the display screen 210 and the lens assembly 220 according to the current VID value and the preset VID value to align the optical module 200 further includes: S350.

[0086] S350, measuring the adjusted current VID value of the optical module 200, and comparing it with the preset VID value;

[0087] If the VID value comparison result is within the predetermined range, an aligned optical module 200 is obtained; if the VID value comparison result is not within the predetermined range, the above steps are repeated iteratively until the VID value comparison result is within the predetermined range.

[0088] That is, in order to ensure the performance of the optical module 200, after adjusting the position of the optical module 200, the alignment method of the embodiment of the present application measures the current VID value of the optical module 200 again through the detection module 10, and determines whether the current VID value of the optical module 200 meets the design requirements, that is, the current VID value is compared with the preset VID value. If the VID value comparison result (for example, the difference or ratio of the VID value) is within the predetermined range, the aligned optical module 200 is obtained. If the VID value comparison result is not within the predetermined range, the adjustment module 20 adjusts the relative position of the display screen 210 and the lens assembly 220 according to the adjusted current VID value of the optical module 200 and the preset VID value, until the VID value comparison result is within the predetermined range, then the relative position of the display screen 210 and the lens assembly 220 is stopped, so as to obtain the aligned optical module 200. In this way, the accuracy of the relative position of the display screen 210 and the lens assembly 220 can be guaranteed.

[0089] In some embodiments of the present application, the step of detecting the current VID value of the optical module 200 is: detecting the current VID value of the optical module 200 in multiple fields of view.

[0090] Specifically, the detection module 10 can be used to detect the current VID value of the optical module 200 in multiple fields of view, so as to obtain the current VID values ​​of multiple fields of view of the optical module 200. The adjustment module 20 can adjust the relative position of the display screen 210 and the lens assembly 220 according to the current VID value of each field of view and the preset VID value. When the current VID value of each field of view meets the design requirements, the relative position of the display screen 210 and the lens assembly 220 is stopped from being adjusted, thereby further ensuring the accuracy of the relative position of the display screen 210 and the lens assembly 220.

[0091] An embodiment of the present application also provides an assembly method of an optical module 200, which includes dispensing glue on the display screen 210 of the optical module 200, and the glue may be UV glue. The method also includes the alignment method described in any of the above embodiments, and curing the UV glue after the optical module 200 is aligned, so as to achieve connection and fixation between the display screen 210 and the lens assembly 220, that is, assembly of the optical module 200.

[0092] The embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and the computer program is configured to execute the alignment method described in any of the above embodiments when it is run. Since the alignment method according to the embodiment of the present application has the above technical effects, the optical module 200 according to the embodiment of the present application also has corresponding technical effects, which will not be described in detail in this embodiment.

[0093] The embodiment of the present application also provides an optical module 200, which is obtained by aligning and assembling the alignment device 100 or the alignment method described in any of the above embodiments. Since the alignment device 100 and the alignment method according to the embodiment of the present application have the above technical effects, the optical module 200 according to the embodiment of the present application also has the corresponding technical effects, which will not be described in detail in this embodiment.

[0094] The embodiment of the present application also provides an electronic device, which may be a VR device or an AR device, and the electronic device includes the optical module 200 described in the above embodiment. Since the alignment device 100 and the alignment method according to the embodiment of the present application have the above technical effects, the electronic device according to the embodiment of the present application also has the corresponding technical effects, which will not be described in detail in this embodiment.

[0095] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An alignment device for an optical module, the optical module comprising a display screen and a lens assembly, characterized in that: The alignment device is provided with a preset station, and the alignment device comprises: A detection module, the detection module is arranged at one side of the preset station, and the detection module is configured to detect a current VID value of the optical module located at the preset station; The adjustment module is suitable for cooperating with the optical module of the preset station and is configured to adjust the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value to align the optical module.

2. The alignment device according to claim 1, characterized in that The detection module includes at least one detection module, and the detection module includes: A camera, wherein the camera is provided with a lens, the lens is directed toward the preset station, and the camera is suitable for collecting a virtual image generated by the optical module located at the preset station; A driving member, the driving member is connected to the camera or the lens, and the driving member is used to drive the camera or the lens to move along the axial direction of the lens, so that the camera can capture a virtual image of the same size when the position of the virtual image changes; The output of the driving component corresponds to a corresponding VID value, so that the detection module can obtain a current VID value according to the output of the driving component.

3. The alignment device according to claim 2, characterized in that: The detection module comprises: A plurality of detection modules and a dome, wherein the inner wall of the dome faces the predetermined workstation, the plurality of detection modules are arranged on the inner wall of the dome, one detection module is located at the center of the dome, and the remaining detection modules are arranged around the central detection module.

4. The alignment device according to claim 2, characterized in that: The driving member is configured as a voice coil motor.

5. The alignment device according to claim 1, characterized in that: The adjustment module comprises: The first motion platform is configured to carry and / or fix the display screen, and adjust the position of the display screen according to a current VID value and a preset VID value.

6. The alignment device according to claim 1, characterized in that: The adjustment module comprises: A clamping member, wherein the clamping member is suitable for clamping the lens assembly; The second motion platform, the clamping member is arranged on the second motion platform, and the second motion platform is configured to be able to adjust the position of the lens assembly according to the current VID value and the preset VID value.

7. The alignment device according to claim 6, characterized in that The adjustment module also includes: A third motion platform is configured to carry and / or fix the display screen and to adjust the position of the display screen.

8. A method for aligning an optical module, the optical module comprising a display screen and a lens assembly, characterized in that: The alignment method comprises: Load the optical module to the preset station; Detect the current VID value of the optical module; The relative positions of the display screen and the lens assembly are adjusted according to the current VID value and the preset VID value to align the optical module.

9. The alignment method according to claim 8, characterized in that: The step of adjusting the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value to align the optical module includes: Calculating a current position of the display screen relative to the lens assembly according to a current VID value; Calculating the design position of the display screen relative to the lens assembly according to a preset VID value; Calculating the required adjustment amount of the display screen relative to the lens assembly according to the current position and the design position; The relative positions of the display screen and the lens assembly are adjusted according to the required adjustment amount.

10. The alignment method according to claim 9, characterized in that: The step of adjusting the relative position of the display screen and the lens assembly according to the current VID value and the preset VID value to align the optical module also includes: Measure the current VID value of the adjusted optical module and compare it with the preset VID value; If the VID value comparison result is within the predetermined range, an aligned optical module is obtained; if the VID value comparison result is not within the predetermined range, the above steps are repeated iteratively until the VID value comparison result is within the predetermined range.

11. The alignment method according to claim 8, characterized in that: The step of detecting the current VID value of the optical module is: detecting the current VID value of the optical module in multiple fields of view.

12. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is configured to execute the alignment method according to any one of claims 8 to 11 when running.

13. An optical module, characterized in that: The optical module is aligned and assembled by the alignment device described in any one of claims 1 to 7, or by the alignment method described in any one of claims 8 to 11.

14. An electronic device, characterized in that: Comprising the optical module as claimed in claim 13.

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