AR glasses and display picture control method thereof

Abstract

The invention discloses AR glasses and a display picture control method thereof, the AR glasses comprise a display device, an optical assembly, a lifting mechanism and an attitude sensor, and the display device is internally provided with a microprocessor; the optical assembly is arranged below the display device, and a display picture of the display device can be reflected and presented through the optical assembly; the lifting mechanism is connected with the optical assembly, the lifting mechanism is connected with the optical assembly, and the lifting mechanism can drive the optical assembly and the display device to synchronously move up and down; the attitude sensor is electrically connected with the lifting mechanism and the microprocessor, and the attitude sensor is used for detecting the head state and obtaining the rotation angle of the corresponding state; according to the invention, automatic adjustment of the display picture in the AR glasses is realized, shielding is avoided, and the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of AR glasses, and in particular to an AR glasses and a display screen control method thereof. Background Art

[0002] AR is the abbreviation of "Augmented Reality", which means augmented reality. It can not only see the virtual images projected on the screen, but also the real scenes of the external environment. The BB solution is a relatively mature AR mass production solution. BB is the abbreviation of "BirdBath", which is a virtual magnification solution based on curved surface reflection. Its specific optical structure is as follows: Figure 1 As shown, it includes a display screen 1′, a curved reflector 2′, a plane reflector 3′ and an appearance layer 4′. The light emitted by the display screen 1′ is reflected by the plane reflector 3′ and then incident on the curved reflector 2′, and then reflected by the curved reflector 2′ and focused to the human eye. Most of the ambient light needs to pass through the appearance layer 4′ and the curved reflective layer 2′ to enter the human eye. Its overall transmittance will be relatively low, and the detailed information of the content in the environment cannot be seen clearly. Moreover, when in use, there is such a scenario that the eyes can see virtual content when looking straight, but at the same time they need to look down at things in the real world, such as recording relevant information in a notebook; at this time, the above structure cannot meet the needs, and the entire optical module will cause a great obstacle to viewing the content of the environment. The usual solutions are divided into the following: turn off the screen through active interaction; squint through the gap under the glasses; take off the glasses. At present, these methods all require users to take the initiative, and the user experience is not friendly in most scenarios. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide an AR glasses and a display screen control method thereof, which can solve the above-mentioned problems existing in the prior art, realize automatic adjustment of the display screen in the AR glasses, avoid occlusion, and enhance the user experience.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] In one aspect, an AR glasses is provided, comprising: a display device, wherein a microprocessor is disposed inside the display device;

[0006] An optical component is disposed below the display device, and a display image of the display device can be presented through reflection by the optical component;

[0007] A lifting mechanism connected to the optical assembly, the lifting mechanism being capable of driving the optical assembly and the display device to move up and down synchronously;

[0008] A posture sensor, which is electrically connected to the lifting mechanism and the microprocessor respectively, and is used to detect the state of the head and obtain the rotation angle of the corresponding state;

[0009] The AR glasses are configured to: detect whether the head is in an upward state or a downward state through the posture sensor, and then obtain the corresponding upward angle or downward angle; when the head is in an upward state, the lifting mechanism controls the optical component and the display device to lower their height according to the upward angle, and the microprocessor controls the display screen of the display device to move upward according to the upward angle; when the head is in a downward state, the lifting mechanism controls the optical component and the display device to raise their height according to the downward angle, and the microprocessor controls the display screen of the display device to move downward according to the downward angle.

[0010] Optionally, the optical component includes a semi-transparent and semi-reflective mirror and a curved mirror, the semi-transparent and semi-reflective mirror is tiltedly arranged below the display device, and the curved mirror is correspondingly arranged on the reflective side of the semi-transparent and semi-reflective mirror.

[0011] Optionally, the optical component includes a polarizing mirror, a curved mirror and a film, the polarizing mirror is tiltedly arranged below the display device, the curved mirror is correspondingly arranged on the reflective side of the polarizing mirror, and the film is arranged on a side of the curved mirror facing the polarizing mirror.

[0012] Optionally, the lifting mechanism is a planetary gearbox, a cycloid reducer, or a harmonic reducer.

[0013] Optionally, the display device has a near-eye end and a far-eye end, and the AR glasses are further configured such that: when the display screen of the display device moves downward, the display screen at the near-eye end moves toward the far-eye end; when the display screen of the display device moves upward, the display screen at the far-eye end moves toward the near-eye end.

[0014] On the other hand, a display screen control method of AR glasses is also provided, and the method specifically includes:

[0015] The posture sensor is used to obtain the state information of the head wearing the AR glasses, and determine whether the head is in a lowered state or raised state, and then obtain the corresponding raising angle and lowering angle;

[0016] When the head is in the state of raising its head, the optical module presenting the display image is controlled to lower its height according to the raising angle, and the display image is controlled to move upward synchronously;

[0017] When the head is in a lowered state, the optical module presenting the display image is controlled to rise in height according to the lowered angle, and the display image is controlled to move downward synchronously.

[0018] Optionally, when the obtained head-lowering angle is θ, θ is set to 0 when the head is not lowered, and the lifting height H1 of the optical module is calculated, H1 = (L+D)*sin(θ), where L is the exit pupil distance of the optical module, and D is the thickness of the optical module.

[0019] Optionally, the distance that the display image moves downward is set to h1, h1 = L p *tan(θ) / β, where β is the vertical optical magnification of the optical module, L p is the virtual image distance of the optical module.

[0020] Optionally, the head-up angle ψ is obtained based on the head-down angle θ, and the height of the optical module lowered downward is calculated as H2, H2 = (L+D)*sin(θ-ψ).

[0021] Optionally, the distance that the display image moves upward is set to h2, h2 = L p *tan(θ-ψ) / β.

[0022] Optionally, when the display image moves downward, the display image at the near-eye end moves toward the far-eye end, and the number of pixel rows moved is N1, N1 = h1 / w = L p *tan(θ) / (w*β), where w is the pixel width of the optical module.

[0023] Optionally, when the display image moves upward, the display image at the far eye end moves toward the near eye end, and the number of pixel rows moved is N2, N2 = h2 / w = L p *tan(θ-ψ) / (w*β), where w is the pixel width of the optical module.

[0024] The beneficial effects of the present application are: the movement state of the head is detected in real time by a posture sensor, and the optical module is adjusted based on the detected angle information. The optical module includes an optical component and a display device. The optical module is moved upward or downward to avoid blocking the user's line of sight. When the optical module moves, the display screen is controlled to move synchronously, but the display screen moves in the opposite direction, that is, the optical film group moves upward and the display screen moves downward. This is to ensure that the display screen is always presented in a position that is convenient for observation by the glasses. In this way, the user can watch virtual content and real content at the same time, and the virtual content will not become an obstacle to watching real content. The problem of the inability to adaptively adjust the optical module and the display screen of the current AR glasses is solved, which greatly improves the intelligence of the use of AR glasses and can bring users a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described in detail below based on the drawings and embodiments.

[0026] Figure 1 A schematic diagram of the optical structure described in the background technology of this application;

[0027] Figure 2 This is a schematic diagram of the optical module structure of the AR glasses described in Example 1 of the present application;

[0028] Figure 3 This is a schematic structural diagram of the planetary gearbox described in Example 1 of the present application;

[0029] Figure 4 The process diagram of the control method described in Example 3 of this application is as follows Figure 1 ;

[0030] Figure 5 The process diagram of the control method described in Example 3 of this application is as follows Figure 2 .

[0031] Figure 1 middle:

[0032] 1′, display screen; 2′, curved reflector; 3′, flat reflector; 4′, exterior layer;

[0033] Figure 2 , Figure 3 middle:

[0034] 1. Display device; 2. Semi-transparent and semi-reflective mirror; 3. Curved mirror; 4. Lifting mechanism; 5. Input member; 6. Base plate; 7. Input gear; 8. Transmission gear; 9. Output gear; 10. Output member; 11. Optical component; 12. Optical module. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0036] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] Embodiment 1: A pair of AR glasses.

[0039] like Figure 2 As shown, this embodiment provides an AR glasses, including: a display device 1, an optical component 11, an optical component 4 and a posture sensor, wherein a microprocessor is arranged inside the display device 1; the optical component 11 is arranged below the display device 1, and the display screen of the display device 1 can be presented by reflection of the optical component 11, and the optical component 11 and the display device 1 together form an optical module 12; the optical component 4 is connected to the optical component 11, and it can also be understood that the optical component 4 is connected to the optical module 12, so that the optical component 4 can drive the optical module 12 to move up and down, that is, synchronously drive the optical component 11 and the display device 1 to move up and down; the posture sensor is electrically connected to the optical component 4 and the microprocessor respectively, and the posture sensor is used to detect the head state and obtain the corresponding state The rotation angle;

[0040] The AR glasses are configured to: detect whether the head is in an upward state or a downward state through the posture sensor, and then obtain the corresponding upward angle or downward angle; when the head is in an upward state, the optical component 4 controls the optical component 11 and the display device 1 to lower their height according to the upward angle, and the microprocessor controls the display screen of the display device 1 to move upward according to the upward angle; when the head is in a downward state, the optical component 4 controls the optical component 11 and the display device 1 to raise their height according to the downward angle, and the microprocessor controls the display screen of the display device 1 to move downward according to the downward angle.

[0041] Based on the above scheme, the display device 1 is set downward, and the displayed content is presented on the display surface of the optical component 11 after being reflected by the optical component 11. The display surface mentioned here refers to the surface that can be directly observed by the user's line of sight; in the process of using the AR glasses, the user's starting state is set as the initial state. In the initial state, the user does not lower or raise his head. Based on the initial state, the posture sensor is used to detect the state of the head, and then it is determined whether the current state is lowering the head or raising the head. Then, based on the two different states, the corresponding head-up angle and head-down angle are obtained, and then the lifting and lowering of the optical module 12 and the position adjustment of the display screen are controlled according to this angle. Specifically: when the user lowers his head, it means that his line of sight is looking downward. At this time, the optical module 12 is controlled to be lifted upward based on the angle of the head lowering, so that the optical component 11 and the display device 1 will not affect the line of sight. At the same time, in order to ensure that the user can observe virtual content and real content at the same time, the display picture presented on the optical component 11 needs to synchronously move in the opposite direction with the optical module 12, that is, when the optical module 12 is lifted upward, the display picture moves downward on the optical component 11, so that the display picture can always be within the observable range of the user's line of sight, and at the same time it will not interfere with the observation of real content.

[0042] When the user looks up, the line of sight is looking upward, and the optical component 4 controls the optical module 12 to move from top to bottom based on the head-up angle, so that the optical component 11 and the display device 1 are misaligned with the line of sight, so that the optical component 11 and the display device 1 will not block the user's line of sight, and the user can clearly observe what needs to be observed. Since the optical module 12 moves downward as a whole, the display screen needs to move upward on the optical component 11 at this time, and move to a position above the optical component 11, specifically, a position where the user's line of sight can also be observed when the user looks up, or a position where the line of sight can be observed by slightly lowering the line of sight, so that the purpose of simultaneous viewing can be achieved.

[0043] It is worth mentioning that the posture sensor is monitored in real time, that is, when the user lowers or raises his head, the posture sensor will obtain the corresponding head-up angle or head-down angle based on the current state, and send the corresponding angle information to the optical component 4, and the optical component 4 controls the movement of the optical module 12 based on the obtained angle information. It can be simply understood that the optical module 12 can be further raised or lowered after one or more lifts, that is, the optical module 12 lowers the height once based on the first head-up angle, and on this basis, it will lower the height again based on the second consecutive head-up angle. Of course, this lowering of the height is limited and will not exceed the maximum movement stroke set by the optical module 12. When the optical module 12 moves up or down to the corresponding maximum stroke, even if the posture sensor obtains a new head-up angle or head-down angle again, the optical component 4 will not continue to move beyond the stroke.

[0044] Optionally, the optical component 11 includes a semi-transparent and semi-reflective mirror 2 and a curved mirror 3, wherein the semi-transparent and semi-reflective mirror 2 is tiltedly arranged below the display device 1, and the curved mirror 3 is correspondingly arranged on the reflective side of the semi-transparent and semi-reflective mirror 2. The content of the display device 1 is reflected by the semi-transparent and semi-reflective mirror 2 and then presented on the curved mirror 3, and the curved mirror 3 is facing the user's line of sight, so the user can directly and clearly observe the display image.

[0045] Optionally, the optical component 11 includes a polarizing mirror and a curved mirror 3, the polarizing mirror is tiltedly arranged below the display device 1, the curved mirror 3 is correspondingly arranged on the reflecting side of the polarizing mirror, and a quarter-wave plate film is added to the side of the curved mirror 3 facing the polarizing mirror.

[0046] Specifically, the display device 1 may be an LCD display, an OLED display, or a MicroLED display.

[0047] Specifically, Figure 3 As shown, when the optical component 4 is a planetary gearbox, the planetary gearbox includes a substrate 6, an input member 5, an input gear 7, a transmission gear 8, an output gear 9 and an output member 10. The input member 5 is inserted on the substrate 6. External power such as a piezoelectric motor, a rotary motor, a linear motor, etc. is transmitted into the planetary gearbox through the input member 5. The top of the input member 5 is connected to the input gear 7, and the input gear 7 is meshed with the output gear 9 through the transmission gear 8. The output member 10 is connected to the output gear 9. The output member 10 is provided with teeth and is connected to the output member 10 through a connecting rod with teeth, so that rotation can be converted into linear motion. The connecting rod is connected to the optical module 12, so that the lifting and lowering of the optical module 12 can be realized.

[0048] When the optical component 4 is a cycloid reducer, the cycloid reducer includes an input part, a reduction part and an output part. The input part and the output part are similar to planetary transmissions. The final output is to convert rotation into lifting motion through gears, which will not be described in detail here. The input shaft of the reduction part is equipped with a double eccentric sleeve with a displacement of 180°, and the eccentric sleeve is equipped with two roller bearings called swing arms to form an H-shaped mechanism. The center holes of the two cycloid gears are the upper swing arm bearings of the eccentric sleeves. In order to reduce friction, a pin gear cover is provided on the pin gear of the small speed ratio reducer. When the input shaft and the eccentric sleeve rotate together once, due to the restriction of the tooth profile curve on the cycloid gear on the pin wheel, the movement of the cycloid gear becomes a plane motion revolution and rotation. When the input shaft rotates one circle, the eccentric sleeve also rotates one circle, and the cycloid needle rotates one tooth in the opposite direction to obtain deceleration. Then, with the help of the output mechanism, the low-speed rotation motion of the cycloid pinwheel reducer is transmitted to the output shaft through the pin shaft to obtain a lower output speed.

[0049] The optical component 4 is a harmonic reducer, which is mainly composed of a wave generator, a flexible wheel and a rigid wheel; the diameter of the flexible wheel is slightly smaller and the number of teeth is two less than that of the circular rigid wheel. The elliptical shape of the wave generator causes the teeth of the flexible wheel to mesh with the rigid wheel in two opposite areas on the major axis of the ellipse. For every 180 degrees clockwise rotation of the waveform generator, the teeth of the flexible wheel advance one tooth counterclockwise relative to the rigid wheel. Each clockwise rotation of the waveform generator causes the flexible wheel to move two teeth counterclockwise relative to the rigid wheel from its original position.

[0050] In some embodiments, the display device 1 has a near-eye end and a far-eye end. Since the display device 1 is horizontally arranged, the near-eye end is the end close to the glasses, and the far-eye end is the end far away from the glasses. The AR glasses are also configured as follows: when the display screen of the display device 1 moves downward, the display screen at the near-eye end moves toward the far-eye end; when the display screen of the display device 1 moves upward, the display screen at the far-eye end moves toward the near-eye end.

[0051] Specifically, the attitude sensor is a 3D gyroscope.

[0052] Embodiment 2: A pair of AR glasses with an optical module that can move left and right.

[0053] On the basis of the first embodiment, the AR glasses provided in this embodiment further include a moving mechanism, which is connected to the optical component 4 and can drive the optical component 4 to move to the left or right. The posture sensor detects whether the user's head is turned to the left or right, and then obtains the corresponding left turn angle and right turn angle, and then controls the optical module 12 to move right or left based on the left turn angle or right turn angle. The specific action process is as follows: when it is detected that the user's head is turned to the left, the corresponding left turn angle is obtained, and it is judged that the user needs to observe the real content on the left. At this time, the optical component 4 can be controlled to move to the right by the moving mechanism, and then the optical module 12 can be driven to move to the right, which is convenient for the user to observe. Similarly, the display screen of the display device 1 moves to the left accordingly; when it is detected that the user's head is turned to the right, the corresponding right turn angle is obtained, and it is judged that the user needs to observe the real content on the right. The optical component 4 is controlled to move to the left by the moving mechanism, and then the optical module 12 is driven to move to the left, and the display screen moves to the right synchronously.

[0054] The action of moving the optical module 12 left and right is added in this embodiment because in actual application the user's usage status will definitely include turning the head left and right. At this time, only controlling the optical module 12 to move up and down to avoid the line of sight can no longer achieve the best effect. Only by moving left and right in combination with moving up and down can the optimal observation purpose be achieved, and the left and right movement and up and down movement can be performed simultaneously, that is, moving up and moving to the left at the same time, moving down and moving to the right at the same time, etc., to achieve more precise movement control of the optical module 12.

[0055] Embodiment 3: A method for controlling a display screen of AR glasses.

[0056] This embodiment provides a display screen control method of AR glasses, which is applied to the AR glasses as described in Embodiment 1 or Embodiment 2. The method specifically includes:

[0057] The posture sensor obtains the head status information of the wearer wearing AR glasses, determines whether the head is in a lowered or raised state, and outputs the actual corresponding head-up angle and head-down angle of the wearer;

[0058] like Figure 4 As shown, when the head is in a bowed state, its actual bowing angle θ is output, and θ is set to zero when the head is not bowed. According to the bowing angle θ, the required lifting height H1 of the optical module 12 is calculated, and H1 is a function of θ, specifically H1 = (L+D)*sin(θ), where L is the exit pupil distance of the optical module 12, and D is the thickness of the optical module 12.

[0059] Then, the optical module 12 is driven by the optical component 4 to move upward by a distance H1. When the head-down angle θ is zero, the optical module 12 is at the lowest position. During the movement of the optical module 12, the display screen on the optical component 11 will change in real time. Specifically, the display screen moves in the opposite direction of the optical module 12, that is, when the optical module 12 moves upward, the display screen moves downward. The distance the display screen moves downward is set to h1, h1=L p *tan(θ) / β, where β is the vertical optical magnification of the optical module 12, L p is the virtual image distance of the optical module 12.

[0060] Since the position of the display screen has changed, the display content at the near-eye end of the display device 1 is originally located at the uppermost position of the optical component 11, and the display content at the far-eye end is located at the lowermost position of the optical component 11. The optical module 12 has moved up as a whole, and the display content at the near-eye end has also moved up. If the display content at the near-eye end of the display screen is not adjusted, the user's line of sight will not be able to capture the content at the near-eye end, and only part of the display content will be seen, which will bring an extremely uncomfortable user experience to the user. Therefore, it is necessary to adaptively adjust the display content at the near-eye end of the display device 1 while the optical module 12 and the display screen are moving. Specifically, the display content at the near-eye end is controlled to move toward the far-eye end, and the number of pixel rows moved is set to N1, N1=h1 / w=L p *tan(θ) / (w*β), where w is the pixel width of the optical module 12. It can be understood here that when the display device 1 is placed horizontally, the display image needs to be moved from the near-eye end to the far end, that is, the original N1-row pixel display content at the near-eye end is moved to the far end, the original N1-row pixel display content at the far end is discarded, and the N1-row pixel display content at the near-eye end is turned off.

[0061] like Figure 5 As shown, the user raises his head after lowering his head, and the posture sensor outputs the corresponding head-up angle ψ in real time. According to the head-up angle ψ, the optical module 12 presenting the display screen is controlled to lower its height downward, and the display screen is synchronously controlled to move upward;

[0062] Specifically, the head-down angle is θ, and the head-up angle is ψ. The height of the optical module 12 is calculated to be H2, H2 = (L + D) * sin (θ - ψ); the distance the display screen moves upward is set to h2, h2 = L p *tan(θ-ψ) / β.

[0063] When the display image moves upward, the display image at the far eye end moves toward the near eye end, and the number of pixel rows moved is N2, N2 = h2 / w = L p *tan(θ-ψ) / (w*β), at this time the entire image moves downward, where w is the pixel width of the optical module 12.

[0064] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0065] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0066] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0067] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A kind of AR glasses, It is characterized in that include: A display device (1) having a microprocessor disposed therein; An optical component (11) is arranged below the display device (1), and a display image of the display device (1) can be presented through reflection by the optical component (11); An optical component (4) connected to the optical component (11), wherein the optical component (4) is capable of driving the optical component (11) and the display device (1) to move up and down synchronously; a posture sensor, which is electrically connected to the optical component (4) and the microprocessor respectively, and is used to detect the state of the head and obtain the rotation angle of the corresponding state; The AR glasses are configured to: detect whether the head is in an upward state or a downward state through the posture sensor, and then obtain a corresponding upward angle or downward angle; when the head is in an upward state, the optical component (4) controls the optical component (11) and the display device (1) to lower their height according to the upward angle, and the microprocessor controls the display screen of the display device (1) to move upward according to the upward angle; when the head is in a downward state, the optical component (4) controls the optical component (11) and the display device (1) to raise their height according to the downward angle, and the microprocessor controls the display screen of the display device (1) to move downward according to the downward angle.

2. The AR glasses according to claim 1, It is characterized in that The optical component (11) comprises a semi-transparent and semi-reflective mirror (2) and a curved mirror (3); the semi-transparent and semi-reflective mirror (2) is arranged obliquely below the display device (1); and the curved mirror (3) is arranged correspondingly on the reflective side of the semi-transparent and semi-reflective mirror (2).

3. The AR glasses according to claim 1, It is characterized in that The optical component (11) comprises a polarizing reflector, a curved mirror (3) and a film, wherein the polarizing reflector is arranged obliquely below the display device (1), the curved mirror (3) is arranged correspondingly on the reflective side of the polarizing reflector, and the film is arranged on the side of the curved mirror (3) facing the polarizing reflector.

4. The AR glasses according to any one of claims 1 to 3, It is characterized in that The optical component (4) is a planetary gearbox, a cycloid reducer, or a harmonic reducer.

5. The AR glasses according to any one of claims 1 to 3, It is characterized in that The display device (1) has a near-eye end and a far-eye end, and the AR glasses are further configured such that: when the display screen of the display device (1) moves downward, the display screen at the near-eye end moves toward the far-eye end; when the display screen of the display device (1) moves upward, the display screen at the far-eye end moves toward the near-eye end.

6. A display screen control method for AR glasses, It is characterized in that The method specifically comprises: The posture sensor is used to obtain the state information of the head wearing the AR glasses, and determine whether the head is in a lowered state or raised state, and then obtain the corresponding raising angle and lowering angle; When the head is in a state of lifting up, the optical module (12) presenting the display image is controlled to lower its height according to the lifting angle, and the display image is synchronously controlled to move upward; When the head is in a bowed state, the optical module (12) presenting the display image is controlled to be raised upwards according to the bowing angle, and the display image is synchronously controlled to move downwards.

7. The display screen control method of AR glasses according to claim 6, It is characterized in that When the obtained head-down angle is θ, θ is set to 0 when the head is not lowered, and the lifting height H of the optical module (12) is calculated. 1 , H 1 =(L+D)*sin(θ), wherein L is the exit pupil distance of the optical module (12), and D is the thickness of the optical module (12).

8. The display screen control method of AR glasses according to claim 7, It is characterized in that Set the distance the display moves downward to h 1 ,h 1 =L p *tan(θ) / β, where β is the vertical optical magnification of the optical module (12), L p is the virtual image distance of the optical module (12).

9. The display screen control method of AR glasses according to claim 8, It is characterized in that Based on the head-down angle θ, the head-up angle ψ is obtained, and the height of the optical module (12) downward is calculated to be H. 2 ,H 2 =(L+D)*sin(θ-ψ).

10. The display screen control method of AR glasses according to claim 9, It is characterized in that Set the distance the display moves upward to h 2 ,h 2 =L p *tan(θ-ψ) / β.

11. The display screen control method of AR glasses according to claim 8, It is characterized in that When the display image moves downward, the display image near the eye moves toward the far eye, and the number of pixel rows moved is N. 1 , N 1 =h 1 / w=L p *tan(θ) / (w*β), wherein w is the pixel width of the optical module (12).

12. The display screen control method of AR glasses according to claim 10, It is characterized in that When the display image moves upward, the display image at the far eye end moves toward the near eye end, and the number of pixel rows moved is N 2 , N 2 =h 2 / w=L p *tan(θ-ψ) / (w*β), wherein w is the pixel width of the optical module (12).

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