A control method of an AR head-mounted device and an AR head-mounted device

Abstract

The application discloses a control method of an AR head-mounted device and the AR head-mounted device, wherein the AR head-mounted device comprises a support, two frames, two screens, a driving assembly and a control device, the two frames are arranged at intervals along a first direction and are movably connected with the support, so that the two frames can approach and move away from each other in the first direction, the two screens are correspondingly arranged on the front sides of the two frames, the driving assembly is drivingly connected with the two frames to drive the two frames to approach or move away from each other in the first direction, and the control device is electrically connected with the driving assembly to control the driving assembly to drive the two frames to move. The control method of the AR head-mounted device comprises the following steps: acquiring a user's interpupillary distance; controlling the driving assembly to drive the two frames to move in the first direction according to the user's interpupillary distance; and controlling the two screens to perform pixel offset in the first direction according to the displacement of the two frames in the first direction. The technical scheme of the application can adjust the interpupillary distance to meet the use of users with different interpupillary distances, and can keep the conjugate distance unchanged.

Description

Technical Field

[0001] This invention relates to the field of AR glasses technology, and in particular to a control method for an AR head-mounted device and an AR head-mounted device. Background Technology

[0002] IPD (Interpupillary Distance) is a measurement of the distance between the pupils when looking straight ahead. IPD is crucial for AR (Augmented Reality) products because everyone's IPD is different. The brain performs 3D calculations based on a specific IPD. If the AR user's IPD does not match the AR's own IPD, it can cause eye fatigue and reduce the user's comfort. Summary of the Invention

[0003] The main objective of this invention is to provide a control method for an AR head-mounted device, aiming to meet usage requirements.

[0004] To achieve the above objectives, the present invention proposes a control method for an AR head-mounted device. The AR head-mounted device includes a support, two eyeglass frames, two screens, a drive assembly, and a control device. The two eyeglass frames are spaced apart along a first direction and are movably connected to the support so that they can move closer to or further away from each other in the first direction. The two screens are correspondingly disposed on the front sides of the two eyeglass frames. The drive assembly drives and connects to the two eyeglass frames to drive them to move closer to or further away from each other in the first direction. The control device is electrically connected to the drive assembly to control the drive assembly to drive the two eyeglass frames to move.

[0005] The control method for the AR head-mounted device includes the following steps:

[0006] Obtain the user's interpupillary distance;

[0007] Based on the user's interpupillary distance, the drive assembly is controlled to drive the two frames to move in the first direction;

[0008] The two screens are pixel-shifted in the first direction based on the displacement of the two frames in the first direction.

[0009] Optionally, the specific steps of controlling the pixel offset of the two screens in the first direction based on the displacement of the two eyeglass frames in the first direction include:

[0010] The pixel offset direction of the two screens is determined based on the displacement direction of the two frames in the first direction;

[0011] The pixel offset of the two screens is determined based on the displacement of the two frames in the first direction;

[0012] Based on the pixel offset direction and pixel offset amount of the two screens, the two screens are controlled to perform pixel offset in the first direction.

[0013] Optionally, the specific steps of determining the pixel offset direction of the two screens in the first direction based on the displacement direction of the two eyeglass frames in the first direction include:

[0014] When the displacement direction is towards each other, the pixel offset direction of the two screens is away from each other;

[0015] When the displacement direction is moving away from each other, the pixel offset direction of the two screens is moving closer to each other.

[0016] The present invention also provides an AR head-mounted device, the AR head-mounted device comprising:

[0017] support;

[0018] Two eyeglass frames are spaced apart along a first direction and are movably connected to the support so that they can move closer to and further away from each other in the first direction;

[0019] Two screens are respectively set on the front side of the two frames;

[0020] A drive assembly that drives the two frames to move closer to or further apart from each other in the first direction; and,

[0021] A control device is electrically connected to the drive assembly to control the drive assembly to drive the movement of the two frames.

[0022] Optionally, the driving component includes:

[0023] Two racks are arranged opposite each other and spaced apart, and extend along the first direction and respectively connect the two frames;

[0024] A gear, disposed on the bracket and located between the two racks, for respectively meshing with the two racks; and,

[0025] A driving component drives the gear to rotate.

[0026] Optionally, the drive unit includes a knob coaxially disposed with the gear.

[0027] Optionally, the driving component includes a motor, which drives the gear to rotate.

[0028] Optionally, the AR headset further includes a distance detection device for detecting the displacement information of the two frames.

[0029] Optionally, the distance detection device includes:

[0030] The sensor is mounted on the frame of the glasses;

[0031] A photoelectric sensor is disposed on the circuit board and corresponding to the sensing element to sense the position of the sensing element; and,

[0032] A circuit board is disposed on the bracket and electrically connected to the photoelectric sensor.

[0033] Optionally, the AR headset also includes an eye-tracking device for detecting the user's interpupillary distance.

[0034] Optionally, a guide structure is provided between the two frames and the support to guide the two frames to move closer to and further away from each other relative to the support in the first direction.

[0035] Optionally, the guide structure includes a guide groove extending along the first direction and a guide post that slides with the guide groove, wherein one of the guide groove and the guide post is disposed on the bracket and the other is disposed on the two eyeglass frames.

[0036] Optionally, the control device includes a memory, a processor, and a control program for the AR head-mounted device stored in the memory. The processor executes the control program for the AR head-mounted device to implement the steps of the control method for the AR head-mounted device as described above.

[0037] In this invention, two eyeglass frames are spaced apart along the first direction and movably connected to the support. By acquiring the user's interpupillary distance (IPD), the driving component is controlled to move the two eyeglass frames in the first direction, allowing them to move closer and further apart to accommodate users with different IPDs. Furthermore, it is understood that the images displayed independently on the two screens are related; the image-merging distance between their images should be constant to ensure the combined image size when viewed by the user's eyes, avoiding image size distortion and inconsistency. Since the image-merging distance changes as the two eyeglass frames move closer and further apart in the first direction, the display range of the two screens in the first direction needs to be adjusted synchronously to maintain a constant image-merging distance. The pixel offset of the two screens in the first direction is controlled based on the displacement of the two eyeglass frames, thus keeping the image-merging distance constant and ensuring stable and consistent image spacing on both screens, thereby ensuring the normal operation of the AR head-mounted device. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 This is a flowchart illustrating an embodiment of the control method for the AR head-mounted device of the present invention;

[0040] Figure 2 This is a flowchart illustrating another embodiment of the control method for the AR head-mounted device of the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of an embodiment of the AR head-mounted device of the present invention;

[0042] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0043] Figure 5 for Figure 3 A schematic diagram of the structure of the AR head-mounted device from another direction;

[0044] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0045] Figure 7 for Figure 3 A schematic diagram of the structure of the AR head-mounted device from another direction;

[0046] Figure 8 for Figure 7 A magnified view of a section at point C;

[0047] Figure 9 for Figure 3 A schematic diagram of the structure of the AR head-mounted device from another direction;

[0048] Figure 10 for Figure 9 A magnified view of a section at point D;

[0049] Figure 11 for Figure 3 A schematic diagram of the structure of the AR head-mounted device from another direction;

[0050] Figure 12 for Figure 11 A magnified view of a section at point E in the middle.

[0051] Explanation of icon numbers:

[0052]

[0053]

[0054] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0057] Furthermore, the use of terms such as "first" and "second" in this invention is 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 that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0058] IPD (Interpupillary Distance) is a measurement of the distance between the pupils when looking straight ahead. IPD is crucial for AR (Augmented Reality) products because everyone's IPD is different. The brain performs 3D calculations based on a specific IPD. If the AR user's IPD does not match the AR's own IPD, it can cause eye fatigue and reduce the user's comfort.

[0059] In view of this, the present invention proposes a control method for an AR head-mounted device. Figures 1 to 2 This invention provides an embodiment of the control method for an AR head-mounted device. The invention can adjust the interpupillary distance to meet the needs of users with different interpupillary distances and can maintain a constant image merging distance. The control method for the AR head-mounted device will be described below with reference to the specific accompanying drawings.

[0060] Reference Figure 1 and Figure 2The AR head-mounted device includes a support 1, two eyeglass frames 2, two screens, a drive assembly 3, and a control device. The two eyeglass frames 2 are spaced apart along a first direction and are movably connected to the support 1 so that they can move closer to each other and further away in the first direction. The two screens are correspondingly arranged on the front side of the two eyeglass frames 2. The drive assembly 3 drives and connects to the two eyeglass frames 2 so as to drive the two eyeglass frames 2 to move closer to each other or further away in the first direction. The control device is electrically connected to the drive assembly 3 so as to control the drive assembly 3 to drive the two eyeglass frames 2 to move.

[0061] The control method for the AR head-mounted device includes the following steps:

[0062] S100, obtain the user's interpupillary distance;

[0063] S200, based on the user's interpupillary distance, control the drive assembly 3 to drive the two frames 2 to move in the first direction;

[0064] S300, based on the displacement of the two frames 2 in the first direction, control the two screens to perform pixel offset in the first direction.

[0065] In this invention, two eyeglass frames 2 are spaced apart along the first direction and movably connected to the support 1. By acquiring the user's interpupillary distance (IPD), the driving component 3 is controlled to drive the two eyeglass frames 2 to move in the first direction, allowing them to move closer and further apart to accommodate users with different IPDs. Based on this, it is understood that the images displayed independently on the two screens are related; that is, the image-combining distance between their images should be a constant value to ensure the combined image size when viewed by the user's eyes, avoiding image size distortion and inconsistency. Since the image-combining distance changes as the two eyeglass frames 2 move closer and further apart in the first direction, to maintain a constant image-combining distance, the display range of the two screens in the first direction needs to be adjusted synchronously. The pixel offset of the two screens in the first direction is controlled based on the displacement of the two eyeglass frames 2, thereby keeping the image-combining distance constant and ensuring a stable and consistent spacing between the images on the two screens, thus ensuring the stable and consistent image-combining distance and guaranteeing the normal operation of the AR head-mounted device.

[0066] Specifically, the steps in step S300 of controlling the pixel offset of the two screens in the first direction based on the displacement of the two eyeglass frames 2 in the first direction include:

[0067] S310, determine the pixel offset direction of the two screens based on the displacement direction of the two eyeglass frames 2 in the first direction;

[0068] S320, determine the pixel offset of the two screens based on the displacement of the two frames 2 in the first direction;

[0069] S330, based on the pixel offset direction and pixel offset amount of the two screens, control the two screens to perform pixel offset in the first direction.

[0070] As the two eyeglass frames 2 move in different directions in the first direction, the distance between the images on the two screens will increase or decrease accordingly. It is necessary to determine the pixel offset direction of the two screens based on the displacement direction of the two eyeglass frames 2 in the first direction. Based on the displacement amount of the two eyeglass frames 2 in the first direction, the pixel offset amount of the two screens is determined. Then, based on the pixel offset direction and the pixel offset amount of the two screens, the two screens are controlled to perform pixel offset in the first direction.

[0071] Specifically, the steps in step S310 of determining the pixel offset direction of the two screens in the first direction based on the displacement direction of the two eyeglass frames 2 in the first direction include:

[0072] S311, when the displacement direction is towards each other, the pixel offset direction of the two screens is away from each other;

[0073] S312, when the displacement direction is moving away from each other, the pixel offset direction of the two screens is moving closer to each other.

[0074] When the two frames 2 are displaced closer to each other in the first direction, the images displayed on the two screens also move closer together. In this case, pixel offset should be performed in the first direction in a direction away from each other. That is, when decreasing the interpupillary distance, the pixel directions of the two screens move away from each other, causing the images on the two screens to move away from each other in opposite directions. Conversely, when increasing the interpupillary distance, the two frames 2 are displaced further apart in the first direction, and the images displayed on the two screens also move away from each other. In this case, the pixel directions of the two screens move closer together, so that the images on the two screens move closer together. This satisfies the usage requirements.

[0075] In one embodiment, the AR head-mounted device includes an eye-tracking device for detecting the user's interpupillary distance (IPD). The control device is electrically connected to the eye-tracking device. The step of obtaining the user's IPD in step S100 specifically includes controlling the eye-tracking device to obtain the user's IPD.

[0076] Specifically, the drive assembly 3 includes two racks 31, a gear 32, and a drive member 33. The two racks 31 are arranged opposite each other and spaced apart, extending along the first direction and respectively connecting to the two eyeglass frames 2. The gear 32 is disposed on the bracket 1 and located between the two racks 31 to mesh with the two racks 31 respectively. The drive member 33 drives the gear 32 to rotate. The drive member 33 can be of various types and is not limited to any specific embodiment. In one embodiment, the drive member 33 includes a knob 331 coaxially arranged with the gear 32. The user directly operates the knob 331 to rotate according to the user's interpupillary distance, thereby driving the gear 32 to transmit power to the two racks 31, and thus causing the two frames 2 to move away from and closer to each other in the first direction. In another embodiment, the driving component 33 includes a motor 332, which drives the gear 32 to rotate. The specific steps in step S200 of controlling the driving component 3 to drive the two frames 2 to move in the first direction according to the user's interpupillary distance include: controlling the motor 332 to drive the gear 32 to rotate according to the user's interpupillary distance, thereby driving the two frames 2 to move away from and closer to each other in the first direction.

[0077] To improve adjustment accuracy, the AR head-mounted device further includes a distance detection device 4 for detecting the displacement information of the two frames 2. The control device is electrically connected to the distance detection device 4. The specific steps in step S300 of controlling the pixel shift of the two screens in the first direction based on the displacement of the two frames 2 in the first direction include: acquiring the displacement information detected by the distance detection device 4; and controlling the pixel shift of the two screens in the first direction based on the displacement information.

[0078] Please see Figure 3 and Figure 4 The present invention also proposes an AR head-mounted device, wherein the AR head-mounted device includes a support 1, two eyeglass frames 2, two screens, a driving component 3, and a control device. The two eyeglass frames 2 are spaced apart along a first direction and are movably connected to the support 1 so that they can move closer to each other and further away from each other in the first direction. The two screens are correspondingly disposed on the front side of the two eyeglass frames 2. The driving component 3 drives and connects the two eyeglass frames 2 to drive the two eyeglass frames 2 to move closer to each other or further away from each other in the first direction. The control device is electrically connected to the driving component 3 to control the driving component 3 to drive the two eyeglass frames 2 to move.

[0079] In the technical solution of this invention, two eyeglass frames 2 are spaced apart along the first direction and movably connected to the support 1. The control device controls the driving component 3 to drive the two eyeglass frames 2 to move in the first direction according to the user's interpupillary distance, so that the two eyeglass frames 2 can move closer and further apart in the first direction, thereby meeting the needs of users with different interpupillary distances. Based on this, it can be understood that the images displayed independently by the two screens are related to each other, that is, the image-combining distance between their images should be a certain value to ensure the combined image size when the user's eyes are viewing, avoiding image size distortion and inconsistency. Since the two eyeglass frames 2 moving closer and further apart in the first direction will cause changes in the image-combining distance, in order to keep the image-combining distance constant, the display range of the two screens in the first direction needs to be adjusted synchronously. The pixel offset of the two screens in the first direction is controlled according to the displacement of the two eyeglass frames 2 in the first direction, thereby keeping the image-combining distance constant, ensuring that the spacing between the images on the two screens is stable and consistent, and thus ensuring the stable and consistent image-combining distance. This ensures the normal use of the AR head-mounted device.

[0080] The driving component 3 can be of various types, and no specific limitation is made. In this embodiment, the driving component 3 includes two racks 31, a gear 32, and a driving member 33. The two racks 31 are arranged opposite each other and spaced apart, extending along the first direction and respectively connecting to the two eyeglass frames 2. The gear 32 is located on the bracket 1 and between the two racks 31, so as to mesh with the two racks 31 respectively. The driving member 33 drives the gear 32 to rotate. The driving member 33 simultaneously links the two racks 31 through the gear 32, realizing the simultaneous linkage of the two eyeglass frames 2 to move away from and closer to each other in the first direction, thereby improving the synchronization rate and making the adjustment more stable.

[0081] The driving component 33 can be of various types and is not limited to any specific one. In one embodiment, the driving component 33 includes a knob 331 coaxially arranged with the gear 32. The user directly operates the knob 331 to rotate according to the user's interpupillary distance, thereby driving the gear 32 to transmit power to the two racks 31, and thus causing the two eyeglass frames 2 to move away from and closer to each other in the first direction. The knob 331 makes the AR head-mounted device low-cost, simple in structure, and easy to manufacture. In another embodiment, the driving component 33 includes a motor 332, which drives the gear 32 to rotate. The motor 332 drives the gear 32 to rotate, thereby transmitting power to the two racks 31, and thus causing the two eyeglass frames 2 to move away from and closer to each other in the first direction. The motor 332 allows for more precise driving of the gear 32 to rotate, thereby transmitting power to the two eyeglass frames 2.

[0082] In addition, the AR headset also includes a distance detection device 4 for detecting the displacement information of the two eyeglass frames 2. The distance detection device 4 accurately obtains the displacement information of the two eyeglass frames 2, facilitating interpupillary distance adjustment and also allowing for pixel shift control of the two screens based on the displacement information.

[0083] The distance detection device 4 can be of various types, and no specific limitation is made in the technical solution of this invention. In this embodiment, the distance detection device 4 includes a sensor 41, a photoelectric sensor 42, and a circuit board 43. The sensor 41 is disposed on the frame 2, and the photoelectric sensor 42 is disposed on the circuit board 43 and is arranged corresponding to the sensor 41 to sense the position of the sensor 41. The circuit board 43 is disposed on the bracket 1 and is electrically connected to the photoelectric sensor 42. Since the sensor 41 is disposed on the frame 2, and the circuit board 43 and the photoelectric sensor 42 are disposed on the circuit board 43, and the photoelectric sensor 42 is arranged corresponding to the sensor 41, the position of the sensor 41 can be sensed. When the two frames 2 move closer and further away from each other in the first direction, the photoelectric sensor 42 senses the position of the corresponding frame 2, thereby obtaining the displacement direction and displacement amount of the frame 2 in the first direction. Specifically, in one embodiment, the sensor 41 can be disposed on one of the two frames 2. Since the two frames 2 move synchronously, the setting of one sensor 41 makes the structure simple, the cost low, and the sensing reliability strong. In another embodiment, two sensors 41 are provided, and the two sensors 41 are disposed on the two frames 2 respectively, so as to accurately detect the position movement of the two frames 2 respectively, with higher accuracy.

[0084] In order to precisely adjust the two frames 2 to fit the user's interpupillary distance, the AR head-mounted device also includes an eye-tracking device to detect the user's interpupillary distance. The adjustment is then made based on the interpupillary distance detected by the eye-tracking device, making the adjustment structure more precise and efficient.

[0085] To prevent the displacement of the two eyeglass frames 2 from shifting in the first direction when they move closer or further apart, a guide structure 5 is provided between the two eyeglass frames 2 and the support 1 to guide the two eyeglass frames 2 relative to the support 1 to move closer or further apart in the first direction. The guide structure 5 can be of various types and is not limited in specific examples. In this embodiment, the guide structure 5 includes a guide groove 51 extending along the first direction and a guide post 52 that slides with the guide groove 51. The specific positions of the guide groove 51 and the guide post 52 can be varied. In one embodiment, the guide groove 51 is located on the support 1, and the guide post 52 is located on both eyeglass frames 2. In another embodiment, the guide groove 51 is located on both eyeglass frames 2, and the guide post 52 is located on the support 1. The specific number of guide grooves 51 and guide posts 52 is also varied and is not limited in specific examples.

[0086] Furthermore, the control device includes a memory, a processor, and a control program for the AR headset stored in the memory. The processor executes the control program for the AR headset to implement the steps of the control method for the AR headset as described below:

[0087] Obtain the user's interpupillary distance;

[0088] Based on the user's interpupillary distance, the drive assembly 3 is controlled to drive the two frames 2 to move in the first direction;

[0089] The two screens are pixel-shifted in the first direction based on the displacement of the two frames 2 in the first direction.

[0090] Optionally, the specific steps of controlling the pixel offset of the two screens in the first direction based on the displacement of the two eyeglass frames 2 in the first direction include:

[0091] The pixel offset direction of the two screens is determined based on the displacement direction of the two eyeglass frames 2 in the first direction;

[0092] The pixel offset of the two screens is determined based on the displacement of the two frames 2 in the first direction;

[0093] Based on the pixel offset direction and pixel offset amount of the two screens, the two screens are controlled to perform pixel offset in the first direction.

[0094] Optionally, the specific steps of determining the pixel offset direction of the two screens in the first direction based on the displacement direction of the two eyeglass frames 2 in the first direction include:

[0095] When the displacement direction is towards each other, the pixel offset direction of the two screens is away from each other;

[0096] When the displacement direction is moving away from each other, the pixel offset direction of the two screens is moving closer to each other.

[0097] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A control method for an AR head-mounted device, characterized in that, The AR head-mounted device includes a support, two eyeglass frames, two screens, a driving component, and a control device. The two eyeglass frames are spaced apart along a first direction and are movably connected to the support so that they can move closer to each other and further away in the first direction. The two screens are correspondingly disposed on the front side of the two eyeglass frames. The driving component drives and connects to the two eyeglass frames to drive them to move closer to each other or further away in the first direction. The control device is electrically connected to the driving component to control the driving component to drive the two eyeglass frames to move. The control method for the AR head-mounted device includes the following steps: Obtain the user's interpupillary distance; Based on the user's interpupillary distance, the drive assembly is controlled to drive the two frames to move in the first direction; The two screens are controlled to shift pixels in the first direction based on the displacement of the two frames in the first direction; The specific steps of controlling the pixel offset of the two screens in the first direction based on the displacement of the two eyeglass frames in the first direction include: The pixel offset direction of the two screens is determined based on the displacement direction of the two frames in the first direction; The pixel offset of the two screens is determined based on the displacement of the two frames in the first direction; Based on the pixel offset direction and pixel offset amount of the two screens, control the two screens to perform pixel offset in the first direction; The specific steps for determining the pixel offset direction of the two screens in the first direction based on the displacement direction of the two eyeglass frames in the first direction include: When the displacement direction is towards each other, the pixel offset direction of the two screens is away from each other; When the displacement direction is moving away from each other, the pixel offset direction of the two screens is moving closer to each other.

2. An AR head-mounted device, characterized in that, include: support; Two eyeglass frames are spaced apart along a first direction and are movably connected to the support so that they can move closer to and further away from each other in the first direction; Two screens are respectively set on the front side of the two frames; A drive assembly that drives the two frames to move closer to or further apart from each other in the first direction; and, A control device is electrically connected to the drive assembly to control the drive assembly to drive the two frames to move; The control device includes a memory, a processor, and a control program for the AR head-mounted device stored in the memory. The processor executes the control program for the AR head-mounted device to implement the steps of the control method for the AR head-mounted device as described in claim 1.

3. The AR head-mounted device as described in claim 2, characterized in that, The driving component includes: Two racks are arranged opposite each other and spaced apart, and extend along the first direction and respectively connect the two frames; A gear, disposed on the bracket and located between the two racks, for respectively meshing with the two racks; and, A driving component drives the gear to rotate.

4. The AR head-mounted device as described in claim 3, characterized in that, The drive component includes a knob coaxially arranged with the gear.

5. The AR head-mounted device as described in claim 3, characterized in that, The driving component includes a motor, which drives the gear to rotate.

6. The AR head-mounted device as described in claim 2, characterized in that, The AR headset also includes a distance detection device for detecting the displacement information of the two frames.

7. The AR head-mounted device as described in claim 6, characterized in that, The distance detection device includes: The sensor is mounted on the frame of the glasses; A photoelectric sensor, disposed on a circuit board and corresponding to the sensing element, is used to sense the position of the sensing element; and, A circuit board is disposed on the bracket and electrically connected to the photoelectric sensor.

8. The AR head-mounted device as described in claim 2, characterized in that, The AR headset also includes an eye-tracking device to detect the user's interpupillary distance.

9. The AR head-mounted device as described in claim 2, characterized in that, A guide structure is provided between the two frames and the support to guide the two frames to move closer to each other and further away from the support in the first direction.

10. The AR head-mounted device as described in claim 9, characterized in that, The guiding structure includes a guide groove extending along the first direction and a guide post that slides with the guide groove. One of the guide groove and the guide post is disposed on the bracket, and the other is disposed on the two eyeglass frames.

Images