VR head-mounted display optical calibration jig

Abstract

The utility model discloses a VR head-mounted display optical calibration jig, which relates to the technical field of calibration test jigs and comprises a base, a head-mounted display limiting assembly and a shooting assembly. The head-mounted display limiting assembly is detachably mounted on the base, the head-mounted display limiting assembly comprises a first limiting module and a second limiting module, and the first limiting module and the second limiting module enclose to form a mounting space for accommodating a VR head-mounted display; the shooting assembly comprises a camera module, the camera module is movably connected to the base and located in the installation space, and the camera module faces the first limiting module to shoot the VR head-mounted display.

Description

VR Headset Optical Calibration Fixture Technical Field

[0001] This utility model relates to the field of calibration and testing fixture technology, and in particular to a VR head-mounted display optical calibration fixture. Background Technology

[0002] VR headset optical measurement and calibration test fixtures are components used to test the spatial position calibration of optical lenses and 6DOF and 3DOF cameras in VR headset products. This facilitates product positioning and testing in different modes, including testing the imaging quality of optical lenses and the spatial position accuracy calibration of 6DOF and 3DOF cameras. However, existing calibration test fixtures still have the following problems: during the testing of the imaging quality of optical lenses and the spatial position accuracy calibration of 6DOF and 3DOF cameras in VR headsets, the clamping needs to be adjusted according to different headset products, which is inconvenient and requires subsequent disassembly. Summary of the Invention

[0003] The main purpose of this invention is to propose a VR headset optical calibration fixture, which aims to improve the applicability of the VR headset optical calibration fixture to different types of VR headset products.

[0004] To achieve the above objectives, the VR headset optical calibration fixture proposed in this utility model includes:

[0005] Base;

[0006] A head-mounted display (HUD) limiting component is detachably mounted on the base. The HUD limiting component includes a first limiting module and a second limiting module, which together form an installation space for accommodating the VR head-mounted display.

[0007] The shooting component includes a camera module that is movably connected to the base and located within the installation space. The camera module faces the first limiting module to shoot the VR headset.

[0008] In one embodiment, the first limiting module includes a first mounting base, a main unit support block, a nose pad support block, a first left limiting block, and a first right limiting block. The main unit support block, the nose pad support block, the first left limiting block, and the first right limiting block are disposed on the first mounting base. The main unit support block and the nose pad support block are located at the middle position along the length direction of the first mounting base. The first left limiting block and the first right limiting block are respectively disposed on both sides of the main unit support block to abut and limit the two sides of the front end of the VR headset.

[0009] In one embodiment, the first limiting module further includes a top pressing block and a pressing block support frame. The pressing block support frame is installed on the base, and the pressing block is connected to the pressing block support frame and located above the host support block. The top pressing block abuts against and limits the top of the front end of the VR headset.

[0010] In one embodiment, the second limiting module includes a second mounting base, a second left limiting block, a second middle limiting block, and a second right limiting block. The second left limiting block, the second middle limiting block, and the second right limiting block are mounted on the second mounting base. The second left limiting block and the second right limiting block are respectively disposed at opposite ends of the length direction of the second mounting base. The second middle limiting block is located between the second left limiting block and the second right limiting block and is disposed facing both of them.

[0011] In one embodiment, the second left limiting block, the second middle limiting block, and the second right limiting block each include a limiting member and a clamping member. The limiting member is disposed on the second mounting base, and the clamping member is disposed above the limiting member. The limiting member forms a limiting surface on the side facing the VR headset, and the limiting surface abuts against the side walls of the inner and outer sides of the VR headset. The clamping member includes a connecting part and a clamping part. The connecting part is detachably connected to the limiting member and can be adjusted up and down relative to the limiting member. The bottom of the clamping part abuts against and limits the top of the VR headset.

[0012] In one embodiment, the base has a first mounting groove that extends along the width direction of the base. The second mounting seat is mounted in the first mounting groove and can be adjusted along the extension direction of the mounting groove to bring the second limiting module closer to or further away from the first limiting module.

[0013] In one embodiment, the shooting assembly further includes a sliding module and a connecting base. The sliding module includes a first slide rail, a second slide rail, and a third slide rail. The first slide rail is connected to the base and extends along the width direction of the base. The second slide rail is slidably mounted on the first slide rail and extends along the length direction of the base. The third slide rail is vertically mounted on the second slide rail. The connecting base is slidably connected to the third slide rail. The camera module is mounted on the connecting base.

[0014] In one embodiment, the shooting components include two sets, and the two shooting components are spaced apart within the installation space.

[0015] In one embodiment, each limiting block has a buffer protective layer connected to the side facing the VR headset.

[0016] In one embodiment, the VR headset optical calibration fixture further includes a calibration camera assembly, which includes a calibration camera and a mounting bracket. The camera is connected to the mounting bracket, and the base has a second mounting groove that extends along the width direction of the base. The mounting bracket is mounted in the second mounting groove and can be adjusted along the extension direction of the second mounting groove to move the calibration camera closer to or further away from the headset limiting assembly.

[0017] This invention proposes a VR headset optical calibration fixture, comprising a base, a headset positioning component, and a camera component. The base serves as a support structure, ensuring the stability of the entire fixture. The headset positioning component, through a first and a second positioning module, forms an installation space, ensuring the stable fixation of the VR headset during calibration. The camera module of the camera component is movably connected to the base, providing flexible adjustment of the shooting angle and position. This design not only ensures the stability of the VR headset but also improves the accuracy and efficiency of calibration through the flexible camera component. The headset positioning component achieves multi-dimensional fixation of the VR headset through the first and second positioning modules, ensuring that the displacement of the VR headset in the horizontal, vertical, and longitudinal directions is effectively limited. The movable connection design of the camera component allows the camera module to move along different directions on the base to adapt to VR headsets of different sizes or different shooting needs, thereby optimizing the efficiency and accuracy of the calibration process. In addition, the detachable VR headset optical calibration fixture allows users to customize the fixture to meet the specifications according to the product form requirements, providing more personalized and accurate fixtures. This improves the flexibility of the VR headset optical calibration fixture in product testing, reduces the frequency of equipment updates, and helps reduce the generation of electronic waste. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of an embodiment of the VR head-mounted display optical calibration fixture provided by this utility model;

[0020] Figure 2 is a structural schematic diagram of the VR head-mounted display optical calibration fixture in Figure 1 from another perspective;

[0021] Figure 3 is a bottom view of the VR headset optical calibration fixture in Figure 1;

[0022] Figure 4 is a schematic diagram of the structure of the VR headset mounted on the VR headset optical calibration fixture;

[0023] Figure 5 is a structural schematic diagram from another perspective of Figure 4.

[0024] Explanation of icon numbers:

[0025] 100. VR Headset Optical Calibration Fixture; 1. Base; 11. First Mounting Slot; 12. Second Mounting Slot; 2. Headset Limiting Component; 21. First Limiting Module; 211. First Mounting Base; 212. Main Unit Support Block; 213. Nose Pad Support Block; 214. First Left Limiting Block; 215. First Right Limiting Block; 216. Top Pressing Block; 217. Pressing Block Support Frame; 22. Second Limiting Module; 221. Second Mounting Base; 222. Second Left Limiting Block 223, Second middle limit block; 224, Second right limit block; 2241, Limiting component; 2242, Clamping component; 2242a, Connecting part; 2242b, Clamping part; 3, Shooting component; 31, Camera module; 32, Sliding module; 321, First slide rail; 322, Second slide rail; 323, Third slide rail; 33, Connecting seat; 4, Calibration camera component; 41, Calibration camera; 42, Mounting bracket; 200, VR headset.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] VR headset optical measurement and calibration test fixtures are components used to test the spatial position calibration of optical lenses and 6DOF and 3DOF cameras in VR headset products. This facilitates product positioning and testing in different modes, including testing the imaging quality of optical lenses and the spatial position accuracy calibration of 6DOF and 3DOF cameras. However, existing calibration test fixtures still have the following problems: during the testing of the imaging quality of optical lenses and the spatial position accuracy calibration of 6DOF and 3DOF cameras in VR headsets, the clamping needs to be adjusted according to different headset products, which is inconvenient and requires subsequent disassembly.

[0031] To solve the above problems, please refer to Figures 1 to 5. This utility model proposes a VR head-mounted display optical calibration fixture 100, including a base 1, a head-mounted display limiting component 2, and a shooting component 3. The head-mounted display limiting component 2 is detachably installed on the base 1. The head-mounted display limiting component 2 includes a first limiting module 21 and a second limiting module 22. The first limiting module 21 and the second limiting module 22 enclose an installation space for accommodating the VR head-mounted display 200. The shooting component 3 includes a camera module 31. The camera module 31 is movably connected to the base 1 and located within the installation space. The camera module 31 faces the first limiting module 21 to shoot the VR head-mounted display 200.

[0032] This utility model proposes a VR headset optical calibration fixture 100, comprising a base 1, a headset positioning component 2, and a camera component 3. The base 1 serves as a support structure, ensuring the stability of the entire fixture. The headset positioning component 2, through a first positioning module 21 and a second positioning module 22, forms an installation space, ensuring the stable fixation of the VR headset 200 during the calibration process. The camera module 31 of the camera component 3 is movably connected to the base 1, providing flexible adjustment of the shooting angle and position. This design not only ensures the stability of the VR headset 200 but also improves the accuracy and efficiency of calibration through the flexible camera component 3. The headset positioning component 2, through the first positioning module 21 and the second positioning module 22, achieves multi-dimensional fixation of the VR headset 200, ensuring that the displacement of the VR headset 200 in the horizontal, vertical, and longitudinal directions is effectively limited. The movable connection design of the shooting component 3 allows the camera module 31 to move in different directions on the base 1 to accommodate VR headsets 200 of different sizes or different shooting needs, thereby optimizing the efficiency and accuracy of the calibration process. Furthermore, the detachable VR headset optical calibration fixture 100 allows users to customize fixture modules to meet specific requirements based on product form factors, providing more personalized and accurate fixtures. This improves the flexibility of the VR headset optical calibration fixture 100 in product testing, reduces equipment replacement frequency, and helps reduce electronic waste generation.

[0033] In an optional embodiment, to improve the stability of the VR headset 200 installation and fixation, please refer to Figures 1 and 2. The first limiting module 21 includes a first mounting base 211, a main unit support block 212, a nose pad support block 213, a first left limiting block 214, and a first right limiting block 215. The main unit support block 212, the nose pad support block 213, the first left limiting block 214, and the first right limiting block 215 are disposed on the first mounting base 211. The main unit support block 212 and the nose pad support block 213 are located at the middle position in the length direction of the first mounting base 211. The first left limiting block 214 and the first right limiting block 215 are respectively disposed on both sides of the main unit support block 212 to abut and limit the two sides of the front end of the VR headset 200. The main support block 212 and nose pad support block 213 are located in the middle, providing primary support for the front body and nose pad of the VR headset 200, respectively. The first left limiting block 214 and the first right limiting block 215 are located on either side, preventing lateral displacement of the VR headset 200 by abutting and limiting the front body of the VR headset 200 on both sides. This multi-point support and limiting design ensures precise alignment and stability of the VR headset 200 within the installation space. The shape and size of the main support block 212 need to match the main body of the headset to provide uniform support force, while the nose pad support block 213 needs to consider the curved shape of the nose pad to ensure fit and stability. The left and right limiting blocks ensure stable and accurate contact by precisely aligning with specific positions on the sidewalls of the VR headset 200. This design not only improves the fixation effect of the VR headset 200 but also optimizes space utilization through reasonable layout, allowing the VR headset optical calibration fixture 100 to adapt to VR headsets 200 of different sizes.

[0034] In an optional embodiment, to further improve the stability of the VR headset 200 installation, referring to Figures 1 and 2, the first limiting module 21 further includes a top pressure block 216 and a pressure block support frame 217. The pressure block support frame 217 is mounted on the base 1, and the pressure block is connected to the pressure block support frame 217 and located above the main support block 212. The top pressure block 216 abuts against and limits the top of the front end of the VR headset 200. This design not only improves the vertical stability of the VR headset 200, but also adapts to VR headsets 200 of different heights through the adjustable pressure block support frame 217. The shape and size of the top pressure block 216 match the curvature of the top of the headset to provide uniform support force while avoiding excessive pressure or deformation on the VR headset 200. The design of the pressure block support frame 217 satisfies its stability and adjustability, and can adopt a height-adjustable structure to adapt to VR headsets 200 of different heights. The top pressure block 216, together with the left and right limiting blocks and support blocks, forms a three-dimensional fixation, ensuring the stability of the VR headset 200 during the calibration process. This multi-dimensional fixation method not only improves the stability of the VR headset 200, but also reduces the pressure concentration on the structure of the VR headset 200 through reasonable force distribution, thereby reducing the risk of deformation of the VR headset 200 during the fixation process.

[0035] In an optional embodiment, to improve the stability of the VR headset 200's rear-end structure installation and fixation, referring to Figures 1 and 2, the second limiting module 22 includes a second mounting base 221, a second left limiting block 222, a second middle limiting block 223, and a second right limiting block 224. The second left limiting block 222, the second middle limiting block 223, and the second right limiting block 224 are mounted on the second mounting base 221. The second left limiting block 222 and the second right limiting block 224 are respectively located at opposite ends of the length direction of the second mounting base 221, and the second middle limiting block 223 is located between the second left limiting block 222 and the second right limiting block 224 and faces both. This multi-point limiting design ensures the complete fixation of the VR headset 200 within the installation space. The shapes of the second left limiting block 222, the second middle limiting block 223, and the second right limiting block 224 match the curvature of the rear-end main body sidewall of the VR headset 200 to ensure stable and accurate contact. Furthermore, the VR headset 200 is further stabilized and positioned by the second left limiting block 222, the second middle limiting block 223, and the second right limiting block 224 from both the inner and outer sides, thus improving the stability of the VR headset 200 installation. In addition, the second middle limiting block 223, through its central positioning, ensures precise centering of the VR headset 200 within the installation space. This design not only improves the stability of the VR headset 200 but also optimizes the fixation effect of the VR headset optical calibration fixture 100 through the reasonable distribution of limiting points, adapting to headsets of different shapes and sizes.

[0036] In an optional embodiment, referring to Figures 1 and 2, the second left limiting block 222, the second middle limiting block 223, and the second right limiting block 224 each include a limiting member 2241 and a clamping member 2242. The limiting member 2241 is disposed on the second mounting base 221, and the clamping member 2242 is disposed above the limiting member 2241. The side of the limiting member 2241 facing the VR headset 200 forms a limiting surface, which abuts against the sidewalls on both the inner and outer sides of the VR headset 200. The clamping member 2242 includes a connecting part 2242a and a clamping part 2242b. The connecting part 2242a is detachably connected to the limiting member 2241 and can be adjusted up and down relative to the limiting member 2241. The bottom of the clamping part 2242b abuts against the top of the VR headset 200 for limiting. Through the synergistic effect of the limiting surface and the clamping part 2242b, the stability of the VR headset 200 in the lateral and vertical directions is ensured. The shape and size of the limiting member 2241 match the curvature of the sidewall of the VR headset 200 to ensure stable and accurate contact. The clamping member 2242 extends downwards and bends towards the side closest to the VR headset 200 to form a clamping portion 2242b, thereby limiting the rear structure of the VR headset 200 in the vertical direction. The detachable connection and height adjustment function of the clamping member 2242 allow the VR headset optical calibration fixture 100 to adapt to VR headsets 200 of different sizes and shapes. Optionally, the clamping member 2242 can be detachably and height-adjustably connected to the limiting member 2241 via screws. This design not only improves the fixation effect of the VR headset 200 but also reduces pressure concentration on the VR headset 200 through reasonable force distribution, lowering the risk of deformation of the VR headset 200 during fixation.

[0037] In an optional embodiment, to facilitate the adjustment of the second limiting module 22, referring to Figures 1 and 3, the base 1 has a first mounting groove 11 extending along the width direction of the base 1. The second mounting seat 221 is mounted in the first mounting groove 11 and can be adjusted along the extension direction of the mounting groove to move the second limiting module 22 closer to or further away from the first limiting module 21. This design not only improves the versatility of the VR headset optical calibration fixture 100, adapting to VR headsets 200 of different sizes, but also optimizes the fixation effect of the VR headset 200 through precise spacing control. The size of the first mounting groove 11 matches the size of the mounting seat to ensure that the second mounting seat 221 can move smoothly within the groove, while avoiding wobbling caused by excessive gaps. In this embodiment, the bottom of the second mounting base 221 has a column structure. A bolt or other connecting structure passes through the first mounting groove 11 from below the base 1 and connects to and locks the column structure. When position adjustment is needed, simply loosen the bolts and push the second mounting base 221 back and forth within the first mounting groove 11. In other embodiments, a slider or slide plate can be provided within the first mounting groove 11 and fixed to the base 1 using bolts or other fasteners. This prevents the VR headset optical calibration fixture 100 from moving during testing and affecting the test results. The second mounting base 221 is then connected to this slider or slide plate to achieve the adjustment of the second limiting module 22. A similar fixing effect can be achieved; the specific choice can be made according to actual needs. The adjustability of the second mounting base 221 improves the versatility and flexibility of the VR headset optical calibration fixture 100. This spacing adjustment function helps to accommodate VR headsets 200 of different sizes. For example, when calibrating a smaller VR headset 200, the limiting module can be moved closer to reduce the installation space; while for a larger VR headset 200, the limiting module can be moved further away to expand the installation space, thus improving the practicality of the VR headset optical calibration fixture 100.

[0038] In an optional embodiment, to enable the adjustment of the camera component's movement, referring to Figures 2, 4, and 5, the shooting component 3 further includes a sliding module 32 and a connecting base 33. The sliding module 32 includes a first slide rail 321, a second slide rail 322, and a third slide rail 323. The first slide rail 321 is connected to the base 1 and extends along the width direction of the base 1. The second slide rail 322 is slidably mounted on the first slide rail 321 and extends along the length direction of the base 1. The third slide rail 323 is vertically mounted on the second slide rail 322. The connecting base 33 is slidably connected to the third slide rail 323, and the camera module 31 is mounted on the connecting base 33. This design allows the camera module 31 to move flexibly in the horizontal and vertical directions, ensuring the accuracy of the shooting angle and position. The lengths of the first slide rail 321 and the second slide rail 322 can be designed according to the actual size of the VR headset optical calibration fixture 100 and the shooting requirements to ensure that the camera module 31 can move in the horizontal direction. The third slide rail 323 extends in the vertical direction to facilitate the lifting and lowering adjustment of the camera module 31. The connecting base 33 provides a stable mounting base for the camera module 31 to be installed on the third slide rail 323. In this embodiment, the camera module 31 is located in the wearing space of the VR headset 200 and faces the lens position. The horizontal, vertical and lifting adjustments of the camera module 31 on the base 1 can be manually controlled by sliding the knob. When measuring the optical module in the VR headset 200, if different models have varying optical interpupillary distances, the measurement range can be adjusted left and right using the knob to accommodate different interpupillary distances. Similarly, when measuring the eyebox (a cone-shaped area between the near-eye display optical module and the eyeball) of different models, the camera module 31 can be adjusted up and down using the knob to accommodate different eyebox sizes. When measuring the entrance pupil distance of different optical lenses in the VR headset 200, the front-to-back distance between the camera module 31 and the optical lens can be adjusted using the knob to obtain the measured entrance pupil distance data. In other embodiments, automatic adjustment can be achieved by using cylinders or motors on the first and second slide rails 321 and 322, depending on actual needs. This multi-dimensional adjustment function not only improves shooting flexibility but also optimizes the efficiency of the calibration process, adapting to VR headsets 200 of different sizes and shapes. Furthermore, the imaging component 3 comprises two sets, which are spaced apart within the installation space. The two sets of imaging components 3 can respectively capture images of the left and right lenses of the VR headset 200, improving the efficiency of detection and calibration.

[0039] In an optional embodiment, each limiting block has a buffer protective layer attached to the side facing the VR headset 200. By attaching a buffer protective layer to the side of the limiting block facing the VR headset 200, direct contact between the limiting blocks and the VR headset 200 is reduced. The buffer protective layer is made of a soft material, effectively reducing the impact of friction and impact on the headset surface and extending the service life of the VR headset 200. The material selection for the buffer protective layer needs to consider its softness and abrasion resistance; for example, silicone, rubber, or other similar soft materials can be used. These materials not only have good cushioning performance but also provide a certain gripping force to ensure the fixation effect of each limiting block. The thickness of the buffer protective layer needs to be adjusted according to the material and surface treatment of the VR headset 200 to avoid instability caused by an excessively thick buffer layer. This design not only helps protect the optical performance and appearance integrity of the VR headset 200 but also improves the accuracy of calibration data by reducing surface damage, enabling it to distribute pressure evenly and avoiding damage to the surface of the VR headset 200 caused by excessive local pressure.

[0040] In an optional embodiment, referring to Figures 4 and 5, the VR headset optical calibration fixture 100 further includes a calibration camera assembly 4, which includes a calibration camera 41 and a mounting bracket 42. The camera is connected to the mounting bracket 42. The base 1 has a second mounting groove 12 that extends along the width direction of the base 1. The mounting bracket 42 is mounted in the second mounting groove 12 and can be adjusted along the extension direction of the second mounting groove 12 to move the calibration camera 41 closer to or further away from the headset limiting assembly 2. The calibration camera 41 facilitates basic positioning of the VR headset 200 for testing in different modes. Furthermore, in this design, the first limiting module 21 is fixedly connected to the base 1, ensuring a consistent installation reference during VR headset 200 installation. Adjusting the second limiting module 22 allows for the installation of VR headsets 200 of different sizes, improving ease of installation and accuracy of the VR headset optical calibration fixture 100, resulting in better calibration and testing outcomes. The length of the mounting slot is designed based on the fixture's actual dimensions and calibration requirements to ensure the calibration camera 41 can move laterally. The adjustable mounting bracket 42 utilizes a bolt structure, enhancing the versatility and flexibility of the VR headset optical calibration fixture 100. This not only improves calibration accuracy but also optimizes the adaptability and efficiency of the VR headset optical calibration fixture 100 through flexible adjustment, allowing operators to quickly adjust the position of the calibration camera 41 for optimal calibration results.

[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A VR headset optical calibration fixture, characterized in that, include: A base; a head-mounted display (HMD) limiting assembly, which is detachably mounted on the base and includes a first limiting module and a second limiting module, which together form an installation space for accommodating the VR head-mounted display; and a camera assembly, which includes a camera module movably connected to the base and located within the installation space, facing the first limiting module to capture images of the VR head-mounted display.

2. The VR headset optical calibration fixture as described in claim 1, characterized in that, The first limiting module includes a first mounting base, a main unit support block, a nose pad support block, a first left limiting block, and a first right limiting block. The main unit support block, the nose pad support block, the first left limiting block, and the first right limiting block are disposed on the first mounting base. The main unit support block and the nose pad support block are located at the middle position along the length direction of the first mounting base. The first left limiting block and the first right limiting block are respectively disposed on both sides of the main unit support block to abut and limit the two sides of the front end of the VR headset.

3. The VR headset optical calibration fixture as described in claim 2, characterized in that, The first limiting module further includes a top pressing block and a pressing block support frame. The pressing block support frame is installed on the base, and the pressing block is connected to the pressing block support frame and located above the host support block. The top pressing block abuts against and limits the top of the front end of the VR headset.

4. The VR headset optical calibration fixture as described in claim 3, characterized in that, The second limiting module includes a second mounting base, a second left limiting block, a second middle limiting block, and a second right limiting block. The second left limiting block, the second middle limiting block, and the second right limiting block are mounted on the second mounting base. The second left limiting block and the second right limiting block are respectively located at opposite ends of the length direction of the second mounting base. The second middle limiting block is located between the second left limiting block and the second right limiting block and faces both of them.

5. The VR headset optical calibration fixture as described in claim 4, characterized in that, The second left limiting block, the second middle limiting block, and the second right limiting block each include a limiting member and a clamping member. The limiting member is disposed on the second mounting base, and the clamping member is disposed above the limiting member. The limiting member forms a limiting surface on the side facing the VR headset. The limiting surface abuts against the side walls of the inner and outer sides of the VR headset. The clamping member includes a connecting part and a clamping part. The connecting part is detachably connected to the limiting member and can be adjusted up and down relative to the limiting member. The bottom of the clamping part abuts against the top of the VR headset for limitation.

6. The VR headset optical calibration fixture as described in claim 4, characterized in that, The base has a first mounting groove that extends along the width of the base. The second mounting seat is mounted in the first mounting groove and can be adjusted along the extension direction of the mounting groove to make the second limiting module move closer to or further away from the first limiting module.

7. The VR headset optical calibration fixture as described in any one of claims 1 to 6, characterized in that, The shooting assembly further includes a sliding module and a connecting base. The sliding module includes a first slide rail, a second slide rail, and a third slide rail. The first slide rail is connected to the base and extends along the width direction of the base. The second slide rail is slidably mounted on the first slide rail and extends along the length direction of the base. The third slide rail is mounted vertically on the second slide rail. The connecting base is slidably connected to the third slide rail. The camera module is mounted on the connecting base.

8. The VR headset optical calibration fixture as described in claim 7, characterized in that, The shooting components include two sets, and the two shooting components are spaced apart in the installation space.

9. The VR headset optical calibration fixture as described in claim 8, characterized in that, Each limiting block has a buffer protective layer connected to the side facing the VR headset.

10. The VR headset optical calibration fixture as described in claim 9, characterized in that, The VR headset optical calibration fixture also includes a calibration camera assembly, which includes a calibration camera and a mounting bracket. The camera is connected to the mounting bracket. The base has a second mounting groove that extends along the width of the base. The mounting bracket is mounted in the second mounting groove and can be adjusted along the extension direction of the second mounting groove to move the calibration camera closer to or further away from the headset limiting assembly.

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