An AR / VR glasses detection device based on deflected optical path

Abstract

The present invention discloses an AR / VR glasses detection device based on a deflected optical path, comprising a base, a spherical dome, a deflected cantilever, and multiple groups of imaging modules. The spherical dome is mounted on the base and has multiple groups of circular holes evenly arranged thereon. The multiple groups of imaging modules are either zoom imaging modules or fixed-focus imaging modules, located at the same distance from the center of the spherical dome and detachably mounted on the circular holes. A reflector and an aperture are provided at one end of the deflected cantilever, and imaging light is reflected from the aperture through the reflector toward the multiple groups of imaging modules as equidistant light. The present invention provides an AR / VR glasses detection device based on a deflected optical path, which has a compact structure and utilizes multiple groups of imaging modules in combination, making it suitable for detecting AR / VR glasses in different application scenarios.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to an AR / VR glasses detection device based on a deflected optical path. Background Art

[0002] With the rapid development of AR / VR technology, it has great application prospects in the military industry, medical industry, industrial testing industry, and even the entertainment industry. Therefore, higher requirements are placed on AR / VR glasses testing equipment. It needs to be accurate, high-speed, and efficient to achieve glasses performance testing; and the measurement equipment needs to be able to adapt to different products and different testing requirements from different angles.

[0003] Chinese patent number CN202220572801 discloses an automatic alignment detection device for VR / AR devices, which can automatically correct the spatial position of the detection instrument according to the spatial position of the VR / AR device to be tested. However, the device cannot select a suitable imaging module according to the actual usage scenario, such as detecting AR / VR glasses developed for users with normal vision and AR / VR glasses developed for users with farsightedness or myopia. It cannot achieve detection effects under different field of view angles. At the same time, the device is large in size and the structure is not compact enough. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide an AR / VR glasses detection device based on a turning optical path, which has a compact structure and uses multiple groups of imaging single modules in combination, thereby being suitable for detecting AR / VR glasses in different application scenarios.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides an AR / VR glasses detection device based on a deflected optical path, comprising a base, a spherical dome, a deflected cantilever, and multiple groups of imaging single modules;

[0006] The spherical dome is mounted on a base, and multiple groups of circular holes are evenly arranged on the spherical dome. The multiple groups of imaging single modules are zoom imaging single modules or fixed-focus imaging single modules, which are equidistant from the center of the spherical dome and detachably mounted on the circular holes of the spherical dome.

[0007] A reflector and an aperture are provided at one end of the turning cantilever, and the imaging light is reflected from the aperture through the reflector to multiple groups of imaging single-module groups as equidistant light.

[0008] Among them, a five-dimensional adjustment mechanism is provided on the turning cantilever, which is used to adjust the distance and angle between the reflector and multiple groups of imaging modules.

[0009] Among them, the zoom imaging single module includes a ball screw, a zoom lens assembly, and a first camera. A first mounting plate for installing the zoom lens assembly is provided at one end of the ball screw. The imaging assembly of the first camera is installed on the side of the ball screw close to the first mounting plate, and the electrical assembly of the first camera is installed above the track on the other side of the ball screw through the first bracket.

[0010] Among them, a first guide hole for fine-tuning the zoom lens assembly up and down is provided at the upper end of the first mounting plate, a center hole is provided in the middle part to cooperate with the rear end mounting seat of the zoom lens assembly, and a threaded hole is provided at the upper end of the mounting seat. The bolt passes through the first guide hole and is locked into the threaded hole on the rear end mounting seat of the zoom lens assembly, thereby mounting the zoom lens assembly on the first mounting plate, and the zoom lens assembly is fine-tuned up and down by loosening and tightening the bolt.

[0011] Among them, the imaging component of the first camera is installed on the ball screw through a multi-dimensional adjustment plate. By fine-tuning the tightness of the bolts in the first guide hole and the multi-dimensional adjustment plate, the off-axis relative position of the imaging component of the first camera and the zoom lens assembly is within 0.03mm, and the tilt angle is within 3°, so as to achieve better imaging effects.

[0012] The zoom lens assembly includes a zoom front barrel and a zoom rear barrel screwed together by threads. A circle of cylindrical magnets is provided in front of the lens of the zoom lens assembly for magnetically adsorbing the lens.

[0013] Among them, a pair of tilt adjustment rings are mounted on the zoom lens assembly. When the zoom imaging single module is mounted on the spherical dome, the tilt angle of the zoom imaging single module relative to the aperture is adjusted by rotating the tilt adjustment rings.

[0014] Among them, the fixed-focus imaging single module includes an XY dual-axis adjustment platform, a fixed-focus lens assembly, and a second camera. A second mounting plate for installing the fixed-focus lens assembly is provided at one end of the XY dual-axis adjustment platform. The imaging assembly of the second camera is installed on the side of the XY dual-axis adjustment platform close to the second mounting plate, and the electrical assembly of the second camera is installed above the other side of the XY dual-axis adjustment platform through a second bracket.

[0015] Among them, a second guide hole for fine-tuning the fixed-focus lens assembly up and down is provided at the upper end of the second mounting plate, a second center hole is provided in the middle part to cooperate with the rear end mounting seat of the fixed-focus lens assembly, and a threaded hole is provided at the upper end of the rear end mounting seat of the fixed-focus lens assembly. The bolt passes through the second guide hole and is locked into the threaded hole on the rear end mounting seat of the fixed-focus lens assembly, thereby mounting the fixed-focus lens assembly on the second mounting plate.

[0016] Among them, the fixed-focus lens assembly includes a fixed-focus front lens barrel and a fixed-focus rear lens barrel screwed together by threads. A circle of cylindrical magnets is provided in front of the lens of the fixed-focus lens assembly for magnetic adsorption of the lens.

[0017] Beneficial effects: The present invention has the following advantages: 1. The imaging single module of the present invention is a zoom imaging single module or a fixed-focus imaging single module, which can be detachably mounted at the circular hole of the spherical dome, so that the user can select the appropriate imaging module according to the actual detection scenario, such as detecting AR / VR glasses developed for users with normal vision and AR / VR glasses developed for users with hyperopia or myopia, to achieve detection under different field of view angles;

[0018] 2. A reflector is provided at the lower end of the turning cantilever to reflect the imaging light toward multiple imaging modules, folding the light path, saving the space occupied by the light path and making the structure of the device more compact;

[0019] 3. The front lens barrel and the rear lens barrel of the present invention are screwed together by threads, which realizes the adjustment of the air gap between the optical lenses in the front and rear lens barrels. At the same time, a circle of cylindrical magnets is provided in front of the lens of the front lens barrel, which is convenient for users to magnetically install additional lenses during the debugging of the device, such as magnetically attaching filters with different transmittances. The operation is convenient and the degree of coordination is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the device of the present invention;

[0021] Figure 2 This is a schematic diagram of the zoom imaging single module structure;

[0022] Figure 3 This is a schematic diagram of the fixed-focus imaging single module structure;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the zoom lens assembly and the first mounting plate. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below with reference to the embodiments and drawings.

[0025] like Figure 1 As shown, the AR / VR glasses detection device based on the turning light path described in the present invention includes a base 1, a spherical dome 2, a turning cantilever 3, and multiple groups of imaging single modules 4.

[0026] The spherical dome 2 is mounted on the base 1, and multiple groups of circular holes are evenly arranged on the spherical dome 2. The multiple groups of imaging single modules 4 are zoom imaging single modules or fixed-focus imaging single modules. They are at the same distance from the center of the spherical dome 2 and can be detachably mounted at the circular holes of the spherical dome 2, so that users can choose appropriate imaging modules according to actual usage scenarios to achieve detection under different field of view angles. In this embodiment, the spherical dome 2 can be installed with 11 groups of imaging single modules 4.

[0027] A reflector 31 and an aperture 32 are mounted on one end of the deflection cantilever 3. The AR / VR glasses to be tested are placed below the aperture 32. Light from the light source passes through the AR / VR glasses to be tested and is reflected from the aperture 32 by the reflector 31 toward the multiple imaging modules 4 as equidistant light. In this embodiment, the deflection cantilever 3 has an L-shaped right-angle structure, with one end mounted on the upper end of the spherical dome 2 and the other end equipped with the reflector 31 and the aperture 32. The aperture 32 is located below the reflector 31, and the AR / VR glasses to be tested are placed below the aperture 32.

[0028] In this embodiment, in addition to supporting the spherical dome 2, the base 1 also deflects the spherical dome 2 from the horizontal state by 76°. In conjunction with the deflection angle of the reflector 31, the imaging light passes through the aperture 32 and is reflected by the reflector 31 toward the multiple imaging modules 4.

[0029] The turning cantilever 3 is provided with a five-dimensional adjustment mechanism for adjusting the position and deflection angle of the reflector 31 in five dimensions.

[0030] like Figure 2 As shown, the zoom imaging single module includes a ball screw 411, a zoom lens assembly 412, and a first camera 413. A first mounting plate 414 for mounting the zoom lens assembly 412 is provided at one end of the ball screw 411. The imaging component of the first camera 413 is mounted on the side of the ball screw 411 close to the first mounting plate 415. The electrical component of the first camera 413 is mounted above the track on the other side of the ball screw 411 through the first bracket 415.

[0031] The total stroke of the ball screw 411 is 100 mm, the positioning accuracy throughout the entire stroke is 0.01 mm, the maximum repeat positioning accuracy is 0.005 mm, and the maximum runout accuracy during operation is 0.005 mm.

[0032] A first guide hole 4141 is provided at the upper end of the first mounting plate 414 for fine-tuning the zoom lens assembly 412 up and down, and a center hole 4142 is provided in the middle portion to cooperate with the rear end mounting seat 4121 of the zoom lens assembly 412. A threaded hole 4122 is provided at the upper end of the mounting seat 4121. A bolt passes through the first guide hole 4141 and is locked into the threaded hole 4122 on the rear end mounting seat 4121 of the zoom lens assembly 412, thereby mounting the zoom lens assembly 412 on the first mounting plate 414, and fine-tuning the zoom lens assembly 412 up and down is performed by loosening and tightening the bolt.

[0033] The imaging component of the first camera 413 is mounted on the ball screw 411 through a multi-dimensional adjustment plate. By fine-tuning the tightness of the bolts in the first guide hole 4141 and the multi-dimensional adjustment plate, the off-axis relative position of the imaging component of the first camera 413 and the zoom lens assembly 412 is within 0.03 mm, and the tilt angle is within 3°, so as to achieve better imaging effects.

[0034] A pair of tilt adjustment rings 416 are mounted on the zoom lens assembly 412. When the zoom imaging single module is mounted on the spherical dome 42, the tilt angle of the zoom imaging single module relative to the aperture 32 is adjusted by rotating the tilt adjustment rings 416 so that the object planes of all zoom imaging single modules coincide.

[0035] like Figure 3 As shown, the fixed-focus imaging single module includes an XY dual-axis adjustment platform 421, a fixed-focus lens assembly 422, and a second camera 423. A second mounting plate 424 for mounting the fixed-focus lens assembly 422 is provided at one end of the XY dual-axis adjustment platform 421. The imaging component of the second camera 423 is mounted on one side of the XY dual-axis adjustment platform 421 close to the second mounting plate 424, and the electrical component of the second camera 423 is mounted above the other side of the XY dual-axis adjustment platform 421 through a second bracket 425.

[0036] The second mounting plate 424 has the same structure as the first mounting plate 414 , and also has a second guide hole 4241 on the upper end for fine-tuning the fixed-focus lens assembly 422 up and down. The fixed-focus lens assembly 422 can be fine-tuned up and down by loosening or tightening the tightening bolt in the second guide hole 4241 .

[0037] The imaging zoom lens assembly 412 and fixed-focus lens assembly 422 of this device both include a front barrel and a rear barrel, comprising a total of eight optical lens groups, three of which are doublets. The front and rear barrels are screwed together, allowing for adjustment of the air gap between the optical lenses within the front and rear barrels. A circle of cylindrical magnets is located in front of the front barrel lenses, facilitating the user's magnetic attachment of additional lenses, such as filters of varying transmittances, during device commissioning. This allows for easy operation and a high degree of coordination. A space is also reserved at the rear end of the rear barrel for adjusting the position of the lens and camera.

[0038] The first camera 413 and the second camera 423 are industrial cameras. The pixel size of the imaging component is 2.7μm×2.7μm. The imaging component and the electrical component are installed separately. During the debugging process, only the imaging component of the camera moves, and the circuit control part is placed at the tail end of the module, which reduces the motion load and makes the movement of the imaging component more stable.

[0039] The main difference between the zoom imaging single module and the fixed-focus imaging single module is that the fixed-focus imaging single module uses an XY dual-axis adjustment platform 421 to replace the ball screw 411 in the zoom imaging single module.

[0040] During the debugging process of the zoom imaging module, the motor drives the imaging assembly of the first camera 413 on the ball screw 411. Simultaneously, the tightening bolt in the first guide hole 4141 is loosened and tightened to fine-tune the zoom lens assembly 412 up and down until the center of the zoom lens assembly 412 is nearly aligned with the center of the image plane of the first camera 413. During testing, the imaging assembly of the first camera 413 moves back and forth on the ball screw 411, selecting five fixed working positions.

[0041] During the debugging process of the fixed-focus imaging single module, the XY dual-axis adjustment platform 421 is manually adjusted to drive the imaging component of the second camera 423 to move relative to the fixed-focus lens component 422. At the same time, the tightening bolts in the second guide hole 4241 are loosened and tightened to fine-tune the fixed-focus lens component 422 up and down until the center of the fixed-focus lens component 422 almost coincides with the center of the phase plane of the imaging component of the second camera 423. After the debugging is completed, the position of the XY dual-axis adjustment platform 421 is locked so that the working position of the imaging component of the second camera 423 remains unchanged.

[0042] The zoom imaging module and the fixed-focus imaging module capture images of light passing through AR / VR glasses at their operating positions and transmit them to the user. The user then determines the quality of the AR / VR glasses based on parameters such as the modulation transfer function and brightness uniformity of the images. The fixed-focus imaging module is suitable for testing AR / VR glasses developed for users with normal vision, while the zoom imaging module is suitable for testing AR / VR glasses developed for users with farsightedness or nearsightedness.

[0043] The device is equipped with an electric control box, which includes a controller for controlling the movement of the XY dual-axis adjustment platform 421 and the operation of the first camera 413 and the second camera 423.

Claims

1. An AR / VR glasses detection device based on a turning light path, characterized in that: It includes a base (1), a spherical dome (2), a turning cantilever (3), and multiple imaging single module groups (4); The spherical dome (2) is mounted on the base (1), and a plurality of groups of circular holes are evenly arranged on the spherical dome (2). The plurality of imaging single module groups (4) are zoom imaging single module groups and fixed focus imaging single module groups, which are at the same distance from the center of the spherical dome (2) and are detachably mounted on the circular holes of the spherical dome (2); The turning cantilever (3) is an L-shaped right-angle structure, one end of which is mounted on the upper end of the spherical dome (2), and the other end of which is provided with a reflector (31) and an aperture (32). The aperture (32) is below the reflector (31), and the AR / VR glasses are placed below the aperture (32). The imaging light is reflected from the aperture (32) through the reflector (31) to the multiple imaging single module groups (4), and the imaging light is equidistant. The zoom imaging single module comprises a ball screw (411), a zoom lens assembly (412), and a first camera (413); a first mounting plate (414) for mounting the zoom lens assembly (412) is provided at one end of the ball screw (411); an imaging assembly of the first camera (413) is mounted on a side of the ball screw (411) close to the first mounting plate (414); and an electrical assembly of the first camera (413) is mounted above a track on the other side of the ball screw (411) via a first bracket (415); during testing, the imaging assembly of the first camera (413) moves back and forth on the ball screw (411) to select five fixed working positions; The fixed-focus imaging single module comprises an XY dual-axis adjustment platform (421), a fixed-focus lens assembly (422), and a second camera (423); a second mounting plate (424) for mounting the fixed-focus lens assembly (422) is provided at one end of the XY dual-axis adjustment platform (421); an imaging assembly of the second camera (423) is mounted on a side of the XY dual-axis adjustment platform (421) close to the second mounting plate (424); and an electrical assembly of the second camera (423) is mounted above the other side of the XY dual-axis adjustment platform (421) via a second bracket (425); after debugging is completed, the position of the XY dual-axis adjustment platform (421) is locked so that the working position of the imaging assembly of the second camera (423) remains unchanged.

2. The AR / VR glasses detection device based on the deflected light path according to claim 1, characterized in that: A five-dimensional adjustment mechanism is provided on the turning cantilever (3) for adjusting the distance and angle between the reflector (31) and the multiple imaging single module groups (4).

3. The AR / VR glasses detection device based on the deflected optical path according to claim 1, characterized in that: A first guide hole (4141) for fine-tuning the zoom lens assembly (412) up and down is provided at the upper end of the first mounting plate (414), a center hole (4142) for cooperating with a rear end mounting seat (4121) of the zoom lens assembly (412) is provided at the middle portion, a threaded hole (4122) is provided at the upper end of the mounting seat (4121), a bolt passes through the first guide hole (4141) and is locked into the threaded hole (4122) on the rear end mounting seat (4121) of the zoom lens assembly (412), thereby mounting the zoom lens assembly (412) on the first mounting plate (414), and fine-tuning the zoom lens assembly (412) up and down is performed by loosening or tightening the bolt.

4. The AR / VR glasses detection device based on the deflected light path according to claim 3, characterized in that: The imaging assembly of the first camera (413) is mounted on the ball screw (411) via a multi-dimensional adjustment plate. By fine-tuning the tightness of the bolts in the first guide hole (4141) and the multi-dimensional adjustment plate, the off-axis relative position of the imaging assembly of the first camera (413) and the zoom lens assembly (412) is within 0.03 mm, and the tilt angle is within 3 degrees.

5. The AR / VR glasses detection device based on the deflected optical path according to claim 1, characterized in that: The zoom lens assembly (412) comprises a zoom front lens barrel and a zoom rear lens barrel screwed together by threads. A circle of cylindrical magnets is provided in front of the zoom lens assembly (412) for magnetically adsorbing the lens.

6. The AR / VR glasses detection device based on the deflected light path according to claim 1, characterized in that: A pair of tilt adjustment rings (416) are mounted on the zoom lens assembly (412). When the zoom imaging single module is mounted on the spherical dome (2), the tilt adjustment rings (416) are rotated to adjust the tilt angle of the zoom imaging single module relative to the diaphragm (32).

7. The AR / VR glasses detection device based on the deflected light path according to claim 1, characterized in that: The upper end of the second mounting plate (424) is provided with a second guide hole (4241) for fine-tuning the fixed-focus lens assembly (422) up and down, and the middle portion is provided with a second center hole that cooperates with the rear end mounting seat of the fixed-focus lens assembly (422). The upper end of the rear end mounting seat of the fixed-focus lens assembly (422) is provided with a threaded hole, and a bolt passes through the second guide hole (4241) and is locked into the threaded hole on the rear end mounting seat of the fixed-focus lens assembly (422), thereby mounting the fixed-focus lens assembly (422) on the second mounting plate (424).

8. The AR / VR glasses detection device based on the deflected light path according to claim 1, characterized in that: The fixed-focus lens assembly (422) comprises a fixed-focus front lens barrel and a fixed-focus rear lens barrel screwed together by threads. A circle of cylindrical magnets is provided in front of the lens of the fixed-focus lens assembly (422) for magnetically adsorbing the lens.

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