An optical device

Abstract

The application relates to the technical field of optics, and discloses an optical device. The optical device comprises an optical display module, the optical display module comprising a first image source assembly and a first optical waveguide structure; when the first image source assembly has a first position, light rays corresponding to the first image source assembly and incident to the first optical waveguide structure have a first included angle with the first optical waveguide structure, and the optical display module has a first virtual image position; when the position of the first image source assembly changes, the included angle between the light rays corresponding to the first image source assembly and incident to the first optical waveguide structure and the first optical waveguide structure also changes, and the virtual image position of the optical display module also changes. In this way, the optical device provided by the application can realize the change of the virtual image position by adjusting the position of the first image source assembly relative to the first optical waveguide structure, thereby meeting the demand of a user for different virtual image positions.

Description

Technical Field

[0001] This application relates to the field of optical technology, and in particular to an optical device. Background Technology

[0002] Head-mounted displays have been widely used in various fields, including military, commercial, industrial, firefighting, and entertainment applications. In some technical solutions, head-mounted displays primarily use an optomechanical system as the image source, projecting the image as a virtual image into the human eye through specific optical elements. These optical elements typically employ waveguide structures.

[0003] Currently, head-mounted display devices maintain the same virtual image position regardless of the user's wearing style, and the distance between the virtual image and the user is also fixed. Therefore, it is difficult to meet users' needs for different virtual image positions and distances. Summary of the Invention

[0004] To address the aforementioned problems, embodiments of this application provide an optical device, including an optical display module, wherein the optical display module includes a first image source component and a first optical waveguide structure; and,

[0005] When the first image source component is at a first position, the light rays incident on the first optical waveguide structure corresponding to the first image source component form a first angle with the first optical waveguide structure, and the optical display module has a first virtual image position.

[0006] When the first image source component has a second position, the light rays incident on the first optical waveguide structure corresponding to the first image source component have a second angle with the first optical waveguide structure, and the optical display module has a second virtual image position.

[0007] In this embodiment, the first image source component can be an optical engine. For ease of explanation, in some embodiments, the angle between the light rays incident on the first optical waveguide structure from the first image source component and the first optical waveguide structure can be defined to be consistent with the angle between the first image source component and the first optical waveguide structure. That is, the angle of the light rays emitted by the image source component is consistent with the angle of the first image source component. When the position of the image source component changes, the position of the light rays emitted by the image source component also changes.

[0008] In this embodiment, by adjusting the position of the first image source component, the angle between the light rays incident on the first image source component and the first optical waveguide structure changes, thereby changing the position of the virtual image formed by the optical display module and meeting the user's needs for different virtual image positions.

[0009] In some embodiments, the position of the first optical waveguide structure can be adjusted to change the angle between the light rays incident from the first image source component onto the first optical waveguide structure and the first optical waveguide structure, thereby changing the position of the virtual image formed by the optical display module.

[0010] It is understood that the optical device provided in this application embodiment can be a wearable display device such as AR glasses, or other devices such as a vehicle head-up display. In this case, the first image source component can be fixed on the car, and the first optical waveguide structure can be embedded in the car windshield or other locations.

[0011] It is understood that in the embodiments of this application, the first position and the second position simply represent two different positions. The first virtual image position and the second virtual image position also represent two different virtual image positions.

[0012] In some embodiments, when the first image source component has a first position relative to the first optical waveguide structure, the optical display module has the first virtual image position, and...

[0013] When the first image source component has a second position relative to the first optical waveguide structure, the optical display module has the second virtual image position.

[0014] In some embodiments, the optical device further includes:

[0015] The display angle adjustment component is used to adjust the relative position of the first image source component with respect to the first optical waveguide structure.

[0016] In this embodiment of the application, the display angle adjustment component can be used to adjust the position of the first image source component.

[0017] In this embodiment, the display angle adjustment component can be any of the display angle adjustment components for adjusting the position of the optical engine described in the following embodiments.

[0018] In some embodiments, the display angle adjustment component is connected to the first image source component, and the display angle adjustment component adjusts the relative position of the first image source component with respect to the first optical waveguide structure by moving the first image source component.

[0019] In some embodiments, the optical device further includes:

[0020] A waveguide angle adjustment component is used to adjust the relative position of the first image source component with respect to the first optical waveguide structure by moving the first optical waveguide structure.

[0021] In this embodiment, the waveguide angle adjustment component can be used to adjust the position of the first optical waveguide structure. Specifically, the waveguide angle adjustment component can be a bendable structure for the middle frame between the right and left mirror frames mentioned in the following embodiments, or the connection between the left and / or right mirror frames and the middle frame can be a rotatable structure.

[0022] The waveguide angle adjustment component can also provide Figure 18 The nose pad and the second adjustment component are shown.

[0023] In some embodiments, the optical device further includes a second image source component and a second optical waveguide structure; and,

[0024] When the first image source component has a first position relative to the first optical waveguide structure, and the second image source component has a third position relative to the second optical waveguide structure, the virtual image formed by the light rays incident from the first image source component onto the first optical waveguide structure and the light rays incident from the second image source component onto the second optical waveguide structure has the first virtual image position.

[0025] When the first image source component has a second position relative to the first optical waveguide structure and the second image source component has a fourth position relative to the second optical waveguide structure, the virtual image formed by the light rays incident from the first image source component to the first optical waveguide structure and the light rays incident from the second image source component to the second optical waveguide structure has the second virtual image position.

[0026] In this embodiment of the application, an optical device may also be provided with two image source components and two optical waveguide structures. By adjusting the relative positions of the two image source components and the two optical waveguide structures respectively, the virtual image position and virtual image distance of the optical device can be adjusted.

[0027] In some embodiments, the optical device is AR glasses.

[0028] In some embodiments, the AR glasses further include a first lens and a second lens for the frame;

[0029] The frame includes a first frame, a second frame, a first temple, and a second temple;

[0030] The first lens includes the first optical waveguide structure.

[0031] In this embodiment, the first lens and the second lens can be the right lens and the left lens, respectively, and the first temple and the second temple can be the right temple and the left temple, respectively. The first optical waveguide structure can be the optical waveguide structure mentioned in the later embodiments. The first image source component can be the optical engine that emits light to the right lens, as described later, and the second image source component can be the optical engine that emits light to the left lens, as described later.

[0032] In some embodiments, the AR glasses further include a first angle adjustment component connected to the frame and the first image source component, for adjusting the first image source component from the first position to the second position.

[0033] In some embodiments, the first angle adjustment component is disposed on the first temple or the first frame.

[0034] In some embodiments, the AR glasses further include a second image source component, a second optical waveguide structure, and a second angle adjustment component;

[0035] The second lens includes the second optical waveguide structure, and the second angle adjustment component connects the frame and the second image source component, and is used to adjust the second image source component from the third position to the fourth position.

[0036] In this embodiment, the first angle adjustment component and the second angle adjustment component can be the display angle adjustment component for adjusting the position of the optical machine on the left temple or left frame in the later embodiment, and the second angle adjustment component can be the display angle adjustment component for adjusting the position of the optical machine on the right temple or right frame in the later embodiment.

[0037] In some embodiments, when the first image source component has the first position and the second image source component has the third position, the virtual image formed by the light rays incident from the first image source component to the first optical waveguide structure and the light rays incident from the second image source component to the second optical waveguide structure has the first virtual image position, and...

[0038] When the first image source component has the second position and the second image source component has the fourth position, the virtual image formed by the light rays incident from the first image source component to the first optical waveguide structure and the light rays incident from the second image source component to the second optical waveguide structure has the second virtual image position.

[0039] In some embodiments, the second angle adjustment component is disposed on the second temple or the second frame.

[0040] In some embodiments, the first angle adjustment assembly includes a first fixed rod and a first rotating structure, wherein,

[0041] The first end of the first fixing rod is fixed to the first temple or the first frame, and the first image source component is disposed at the second end of the first fixing rod through the first rotating structure.

[0042] In this embodiment, the first fixing rod may refer to the third fixing arm that connects the optical engine to the right temple or the right frame in the later embodiment, and the first rotating structure may refer to the rotating structure between the optical engine and the third fixing rod in the later embodiment.

[0043] In some embodiments, the second angle adjustment assembly includes a second fixed rod and a second rotating structure, wherein,

[0044] The first end of the second fixing rod is fixed to the second temple or the second frame, and the second image source assembly is disposed at the second end of the second fixing rod through the second rotating structure.

[0045] In this embodiment, the second fixing rod may refer to the fixing arm that connects the optical engine to the left temple or the left frame in the following embodiments.

[0046] In this embodiment, both the first and second fixing rods can be flexible and bendable structures, such as those made of metal, or they can be the rotating arms mentioned later. When the user wants to adjust the angle of the optical engine, the position of the optical engine can be adjusted by manually bending the first and second fixing rods. The operation is relatively convenient.

[0047] In some embodiments, the first rotating structure or the second rotating structure includes a universal joint.

[0048] In this embodiment, either the first rotating structure or the second rotating structure can be a universal joint, or other structures capable of multi-angle rotation.

[0049] In some embodiments, the first angle adjustment component includes a first fixed rod, a first rotating structure, a first driving structure, and at least one first telescopic structure;

[0050] The first end of the first fixing rod is fixed to the first temple or the first frame, and the first image source component is disposed at the second end of the first fixing rod through the first rotating structure;

[0051] One end of each of the at least one first telescopic structures is connected to a different position of the first image source component, and the other end of each of the at least one first telescopic structures is connected to the first driving structure.

[0052] The first driving structure can drive the first telescopic structure to extend and shorten, thereby causing the first image source component to rotate in the corresponding direction around the first fixed rod.

[0053] In some embodiments, the second angle adjustment assembly includes a second fixed rod, a second rotating structure, a second driving structure, and at least one second telescopic structure;

[0054] The second end of the second fixing rod is fixed to the second temple or the second frame, and the second image source assembly is disposed at the second end of the second fixing rod through the second rotating structure;

[0055] One end of each of the at least one second telescopic structures is connected to a different position of the second image source component, and the other end of each of the at least one second telescopic structures is connected to the second driving structure.

[0056] The second driving structure can drive the second telescopic structure to extend and shorten, thereby causing the second image source component to rotate in the corresponding direction around the second fixed rod.

[0057] In this embodiment, the first telescopic mechanism and the second telescopic structure can be the telescopic structures mentioned in later embodiments. The first drive structure and the second drive structure can be the electric motors mentioned in later embodiments.

[0058] In some embodiments, the first telescopic structure includes a first sleeve and a second sleeve, one end of the first sleeve is connected to the first image source component, the other end of the first sleeve is sleeved inside or outside the second sleeve, and the other end of the first sleeve is connected to the driving structure.

[0059] Alternatively, the second telescopic structure includes a third sleeve and a fourth sleeve, one end of the third sleeve being connected to the first image source component, the other end of the fourth sleeve being fitted inside or outside the third sleeve, and the other end of the third sleeve being connected to the second driving structure.

[0060] In this embodiment, the first sleeve and the second sleeve can be the inner sleeve and outer sleeve of the telescopic structure mentioned in later embodiments, respectively. The third sleeve and the fourth sleeve can also be the inner sleeve and outer sleeve mentioned in later embodiments, respectively.

[0061] In some embodiments, the side of the first image source component is provided with a number of first connecting posts corresponding to the number of the first telescopic structures, and one end of the first sleeve of each first telescopic structure is provided with a first connecting ring; the first connecting ring is sleeved on the outside of the first connecting post.

[0062] Alternatively, the side of the second image source component is provided with a number of second connecting posts corresponding to the number of the second telescopic joint, and one end of the third sleeve of each of the second telescopic structures is provided with a second connecting ring; the second connecting ring is sleeved on the outside of the second connecting post.

[0063] In this embodiment, the connection ring and connection post can effectively enhance the stability during the rotation of the optomechanical system.

[0064] In some embodiments, the inner diameter of the first connecting ring is equal to the outer diameter of the first connecting post; or, the inner diameter of the first connecting ring is greater than the outer diameter of the first connecting post.

[0065] Alternatively, the inner diameter of the second connecting ring is equal to the outer diameter of the second connecting post; or, the inner diameter of the second connecting ring is greater than the outer diameter of the second connecting post.

[0066] In this embodiment, the inner diameter of the first connecting ring is larger than the outer diameter of the first connecting post. This implementation effectively prevents the optical engine angle from being adjusted due to accidental touches of the first or second button mentioned in later embodiments. That is, in some embodiments of this application, the optical engine angle only changes after the user triggers the first or second button a second time. Similarly, setting the inner diameter of the second connecting ring to be larger than the outer diameter of the second connecting post also has the aforementioned beneficial effects.

[0067] In some embodiments, the end of the first connecting post that is not connected to the first image source component is provided with a first stop.

[0068] Alternatively, the end of the second connecting post that is not connected to the second image source component may be provided with a second stop.

[0069] In this embodiment, a first stop is provided at the end of the first connecting post not connected to the first image source component to effectively prevent the first connecting ring from detaching from the first connecting post. Similarly, a second stop is provided at the end of the second connecting post not connected to the second image source component to effectively prevent the second connecting ring from detaching from the second connecting post.

[0070] In some embodiments, one end of the first sleeve of each of the first telescopic structures is connected to the bottom surface of the first image source component, wherein the bottom surface of the first image source component is opposite to the light-emitting surface of the first image source component.

[0071] One end of the third sleeve of each of the second telescopic structures is connected to the bottom surface of the second image source component, wherein the bottom surface of the second image source component is opposite to the light-emitting surface of the second image source component.

[0072] In some implementations, the optical device also includes a processor and a sensing device;

[0073] The sensing device is configured to send the first position change information to the controller when it detects that the position of the first image source component relative to the first optical waveguide structure deviates from the first preset position; and to send the second position change information to the controller when it detects that the position of the second image source component relative to the second optical waveguide structure deviates from the second preset position.

[0074] The processor is configured to control the position of the first image source component relative to the first optical waveguide structure to return to the first preset position according to the first position information; and to control the position of the second image source component relative to the second optical waveguide structure to return to the second preset position according to the second position information.

[0075] In this embodiment, the sensing device can be a sensor mentioned later. The sensor and processor can cooperate to control the position of the image source component relative to the first optical waveguide structure back to a set position. This enables more intelligent control of the virtual image's position back to the set position.

[0076] In some implementations, the optical device also includes a processor;

[0077] The processor is used for:

[0078] Obtain the user's voice commands;

[0079] The position of the first image source component relative to the first optical waveguide structure is controlled according to the voice command to be the set position corresponding to the voice command; and / or the position of the second image source component relative to the second optical waveguide structure is controlled to be the set position corresponding to the voice command.

[0080] In some embodiments, the optical device further includes a processor; the processor is configured to:

[0081] Obtain the user's eye image;

[0082] Determine the user's gaze point location based on the user's eye image;

[0083] The relative positions of the first image source component and / or the second image source component and the second optical waveguide structure are adjusted according to the user's gaze point position and gaze depth, so that the virtual image position of the optical display module is located at the user's gaze point position.

[0084] In this embodiment, the optical device can automatically adjust the position of the virtual image according to the user's gaze point position and gaze depth, which can more intelligently match the user's needs.

[0085] In some embodiments, the optical device also includes a nose pad, a height adjustment assembly, and an intermediate lens frame;

[0086] The intermediate frame is located between the first frame and the second frame;

[0087] The two ends of the nose pad are respectively connected to the first frame and the second frame;

[0088] The nose pad can be moved away from or closer to the intermediate frame via the height adjustment component, and when the nose pad has a first height relative to the intermediate frame, the first image source component has the first position, and when the nose pad has a second height relative to the intermediate frame, the first image source component has the second position.

[0089] In some embodiments, the height adjustment assembly includes a stud that is fixed to the nose pad;

[0090] The intermediate frame is provided with a threaded hole that matches the stud.

[0091] This application also provides an imaging control method for an optical device, including:

[0092] Acquire an eye image of a user wearing the optical device, the eye image including at least one of the user's eyes;

[0093] Based on the eye image, the user's gaze point information is obtained, and the gaze point information includes at least one of gaze point position and gaze point depth;

[0094] The position of the virtual image formed by the optical device is adjusted according to the gaze point information.

[0095] In some embodiments, the optical device is AR glasses.

[0096] In some embodiments, the optical device includes an optical display module, which includes a first image source component and a first optical waveguide structure;

[0097] The step of adjusting the position of the virtual image formed by the optical device based on the gaze point information includes:

[0098] Based on the gaze point information, the position of the virtual image of the optical device is adjusted by adjusting the relative position of the first image source component and the first optical waveguide structure.

[0099] or,

[0100] Based on the gaze point information, the position of the virtual image formed by the optical device is adjusted by adjusting the direction of the light emitted by the first image source component.

[0101] In some embodiments, the optical device includes an optical display module, which includes a first image source component, a first optical waveguide structure, a second image source component, and a second optical waveguide structure.

[0102] The step of adjusting the position of the virtual image formed by the optical device based on the gaze point information includes:

[0103] Based on the gaze point information, the relative positions of the first image source component and the first optical waveguide structure, and the relative positions of the second image source component and the second optical waveguide structure of the optical device are adjusted to adjust the virtual image position of the imaging of the optical device.

[0104] or,

[0105] Based on the gaze point information, the position of the virtual image formed by the optical device is adjusted by adjusting the direction of the light emitted by the first image source component and the direction of the light emitted by the second image source component.

[0106] The imaging control method for optical devices provided in this application embodiment can be used in the aforementioned optical devices, such as AR glasses. The imaging control method for optical devices provided in this application embodiment can automatically adjust the position of the optical engine relative to the lens. For example, AR glasses can automatically identify the gaze point position and depth of gaze of the human eye, and then automatically adjust the position of the optical engine relative to the lens so that the virtual image position is adjusted to the gaze point position of the human eye, and the virtual image distance matches the depth of gaze of the human eye. The gaze point position can include the gaze point direction and the specific location of the gaze point.

[0107] Furthermore, in some embodiments, AR glasses can automatically identify the gaze point and depth of the human eye, and then adjust the virtual image position to the gaze point position of the human eye through image processing-related algorithms, without adjusting the position of the optical engine relative to the lens to achieve the adjustment of the virtual image position.

[0108] In some embodiments, AR glasses can also automatically identify the gaze point position and gaze depth of the human eye, and adjust the virtual image position to the gaze point position of the human eye by changing the emission direction of light in the optical engine without changing the position of the optical engine, so that the virtual image distance matches the gaze depth of the human eye.

[0109] In this way, the optical device can intelligently match the user's needs and adjust the virtual image position to the desired position without the user having to operate it manually. Attached Figure Description

[0110] Figure 1a According to some embodiments of this application, a schematic diagram of an optical waveguide structure is shown;

[0111] Figure 1b According to some embodiments of this application, a schematic diagram of light propagation in an optical waveguide is shown;

[0112] Figure 2 According to some embodiments of this application, a structural schematic diagram of AR glasses is shown;

[0113] Figures 3a to 3e According to some embodiments of this application, a schematic diagram is shown showing how the position of the virtual image changes due to different angles between the outgoing light rays of the optical engine and the lens in a monocular display AR glasses;

[0114] Figure 4a According to some embodiments of this application, a structural schematic diagram of AR glasses is shown;

[0115] Figure 4b According to some embodiments of this application, a schematic diagram of the connection structure between the first and second fixed arms of an AR glasses is shown.

[0116] Figure 4c According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0117] Figure 4d According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0118] Figure 4e According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0119] Figure 4f According to some embodiments of this application, a structural schematic diagram of AR glasses is shown;

[0120] Figure 4g According to some embodiments of this application, a structural schematic diagram of the temples of AR glasses in a folded state is shown;

[0121] Figure 4h According to some embodiments of this application, a structural schematic diagram of AR glasses is shown;

[0122] Figure 4i According to some embodiments of this application, a structural schematic diagram of the temples of AR glasses in a folded state is shown;

[0123] Figure 5 According to some embodiments of this application, a structural schematic diagram of the temples of AR glasses in a folded state is shown;

[0124] Figure 6a According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0125] Figure 6b According to some embodiments of this application, a schematic diagram of the contact position between the bottom of the optical engine of AR glasses and the telescopic structure is shown;

[0126] Figure 6c According to some embodiments of this application, a schematic diagram of the contact position between the bottom of the optical engine of AR glasses and the telescopic structure is shown;

[0127] Figure 6d According to some embodiments of this application, a schematic diagram of the contact position between the bottom of the optical engine of AR glasses and the telescopic structure is shown;

[0128] Figure 7 According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0129] Figure 8 According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0130] Figure 9a According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0131] Figure 9b According to some embodiments of this application, a schematic diagram of a connecting ring and a connecting post for AR glasses is shown;

[0132] Figure 9c According to some embodiments of this application, a schematic diagram of a connecting ring and a connecting post for AR glasses is shown;

[0133] Figure 10a According to some embodiments of this application, a schematic diagram of the structure of a display angle adjustment component for AR glasses is shown;

[0134] Figure 10b According to some embodiments of this application, a partial structural schematic diagram of a display angle adjustment component for AR glasses is shown;

[0135] Figure 11 According to some embodiments of this application, a structural schematic diagram of AR glasses is shown;

[0136] Figure 12According to some embodiments of this application, a schematic diagram of the virtual image position of AR glasses is shown;

[0137] Figure 13 According to some embodiments of this application, a schematic diagram of the virtual image position of AR glasses is shown;

[0138] Figure 14 According to some embodiments of this application, a schematic diagram of the virtual image position of AR glasses is shown;

[0139] Figure 15 According to some embodiments of this application, a schematic diagram of the change in the virtual image position of AR glasses is shown;

[0140] Figure 16 According to some embodiments of this application, a schematic diagram of the virtual image position of AR glasses is shown;

[0141] Figure 17 According to some embodiments of this application, a schematic diagram of the virtual image position of AR glasses is shown;

[0142] Figure 18 According to some embodiments of this application, a schematic diagram of the structure of the nose pad of AR glasses is shown;

[0143] Figure 19 According to some embodiments of this application, a schematic diagram of the relative positions of the outgoing rays of the optical engine of AR glasses and the coupling grating is shown;

[0144] Figure 20 According to some embodiments of this application, a schematic diagram of the hardware structure of AR glasses is shown.

[0145] Icon labels:

[0146] 100 - Optical waveguide; 101 - Waveguide substrate; 102 - Coupled-in grating; 103 - Coupled-out grating; 400 - Optomechanical;

[0147] 21-Left temple; 22-Right temple; 221-Main board; 23-Left frame; 24-Right frame; 25-Left lens; 26-Right lens; 27-Left folding structure; 28-Right folding structure; 281-First fixing arm; 282-Second fixing arm; 283-Rotating shaft; 291-Third fixing arm; 2911-Rotating arm; 292-Rotating structure; 2921-Ball sleeve; 2922-Ball head; 293-Inner sleeve; 294-Outer sleeve; 295-Electric motor; 296-First button; 297-Second button;

[0148] 404 - Printed circuit board; 401 - Connecting ring; 402 - Connecting post; 403 - Stop; 5 - Nose support; 51 - Stud. Detailed Implementation

[0149] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0150] While the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0151] It should be noted that in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In this specification, similar reference numerals and letters in the following drawings indicate similar items. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0152] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0153] As can be understood, head-mounted display devices are devices that send optical signals to the eyes through various head-mounted displays, enabling different effects such as virtual reality (VR), augmented reality (AR), and mixed reality (MR).

[0154] To facilitate understanding of the technical solution of this application, taking AR glasses in a head-mounted display device as an example, some technical terms, optical components, and related principles involved in this application will be introduced. It is understood that the technical solution of this application, in addition to being applied to head-mounted display devices, can also be adapted to other near-eye display devices based on optical waveguide technology, such as automotive head-up displays (HUDs), through appropriate structural adjustments.

[0155] To facilitate understanding, we will first introduce some basic components involved in this application.

[0156] (I) Optical waveguide:

[0157] An optical waveguide is a dielectric device that guides light waves to propagate within it; it is also called a dielectric optical waveguide. In some embodiments, an optical waveguide refers to an optical element that uses the principle of total internal reflection to guide light waves to propagate through total internal reflection within itself. Common waveguide substrates can be guiding structures for transmitting optical frequency electromagnetic waves made of optically transparent media (such as quartz glass).

[0158] (II) Diffraction Waveguide

[0159] A diffractive waveguide is an optical element with a diffraction grating mounted on a waveguide substrate.

[0160] Diffraction gratings include grating structures with fixed periods or gradually varying periods. Gradiently periodized gratings are generally optical devices composed of a large number of parallel slits of equal width and spacing; gradually varying periodized gratings are generally optical devices composed of parallel slits of unequal width or spacing. Light rays incident on a diffraction grating can have their propagation direction altered by diffraction.

[0161] In some embodiments, the diffractive waveguide includes an input grating and an output grating; in other embodiments, the diffractive waveguide may include a relay grating in addition to the input and output gratings. The input grating is used to couple light incident on the input grating into the waveguide substrate; the output grating is used to couple light incident on the output grating out of the waveguide substrate; the relay grating may be located between the input and output gratings, and can be used to change the propagation direction of light incident on the relay grating, guiding the light towards the output grating, thereby achieving exit pupil expansion of the diffractive waveguide in different directions.

[0162] In this embodiment, a diffractive waveguide containing only an input grating and an output grating is used as an example.

[0163] In this embodiment of the application, for ease of explanation, the direction from the user's right eye to the left eye is defined as the positive direction of the X-axis; the vertical direction perpendicular to the X-axis and from the user's feet to the top of the head is defined as the positive direction of the Y-axis; and the direction perpendicular to the X-axis and from the front of the user's body to the back of the body is defined as the positive direction of the Z-axis.

[0164] For example, such as Figure 1a As shown, the optical waveguide 100 can be a diffractive optical waveguide. The optical waveguide 100 can include a waveguide substrate 101, a coupling grating 102 for coupling light into the waveguide substrate 101, and a coupling grating 103 for coupling light out of the waveguide substrate 101.

[0165] The diagram illustrating the propagation of light is shown below. Figure 1b As shown, the light ray i1 emitted from the optomechanical unit 400 enters the coupling grating 102 and, through diffraction by the coupling grating 102, changes its original propagation direction and heads towards the bottom of the waveguide substrate 101. Based on the characteristics of the waveguide substrate 101, the light ray i1 coupled to the waveguide substrate 101 via the coupling grating 102 can undergo total internal reflection propagation between the upper and lower surfaces of the waveguide substrate 101, guided by the positive X-axis. During the total internal reflection propagation of light ray i1 in the waveguide substrate 101, when it reaches position D1 of the output grating 103 on the surface of the waveguide substrate 101, a portion of the light ray i11 is released through diffraction by the output grating 103. The remaining portion of the light ray i12 continues to undergo total internal reflection propagation in the waveguide substrate 101. During subsequent propagation, when the total internally reflected light ray i12 reaches the output grating 103 on the surface of the waveguide substrate 101, the above phenomenon is repeated. Among them, the light rays coupled out by the coupling grating 103 can enter the human eye and form a virtual image.

[0166] It can be understood that the position of the virtual image is related to the direction in which the light rays coupled out of the coupling grating 103 enter the human eye. When the light rays coupled out of the coupling grating 103 enter the human eye perpendicularly, the virtual image is located directly in front of the human eye's line of sight. When the light rays coupled out of the coupling grating 103 enter the human eye at an angle to the left or right, the virtual image is located to the right or left of the corresponding position directly in front of the human eye's line of sight. The direction of the light rays coupled out of the coupling grating 103 is related to the direction in which the outgoing light rays emitted from the optical engine 400 enter the coupling grating.

[0167] (III) AR Glasses

[0168] AR glasses include monocular AR glasses and binocular AR glasses. In monocular AR glasses, at least a portion of one of the two lenses uses an optical waveguide structure; in binocular AR glasses, at least a portion of both lenses uses an optical waveguide structure. Additionally, AR glasses generally include an optomechanism for projecting image light. The light emitted by the optomechanism is guided through the coupling grating of the lenses in the AR glasses and exited through the coupling grating into the user's eye, allowing the user to see a virtual image corresponding to the image.

[0169] Figure 2 The diagram shows structural schematics of the AR glasses 10 in some embodiments, such as... Figure 2 As shown, the AR glasses 10 may include a frame, a lens, and an optical engine 400.

[0170] It is understood that in the accompanying drawings of the embodiments of this application, a circle with a dot inside can be used to represent a direction perpendicular to the paper and outwards, for example, Figure 2 The positive Y-axis is represented by a circle containing a dot, indicating a direction perpendicular to the paper and pointing outwards. Conversely, an "x" sign is used within a circle to represent a direction perpendicular to the paper and pointing inwards. For example... Figures 6b-6d In this diagram, the positive direction of the Z-axis, represented by a circle with a dot inside, is perpendicular to the paper and points outwards.

[0171] The frame portion may include a left temple 21 and a right temple 22, and the lens portion may include a left lens 25 and a right lens 26. At least one of the left lens 25 and the right lens 26 may employ an optical waveguide structure, for example, Figure 2 The diagram below illustrates the structure of AR glasses 10, using a diffractive waveguide structure for the right lens 26 as an example. The optical engine 400 is fixed in front of the right lens 26, for example, in the negative Z-axis direction. It is understood that the waveguide structure mentioned in this embodiment is the same concept as the diffractive waveguide mentioned earlier.

[0172] Figure 2 The light emitted by the optical engine 400 in the AR glasses 10 described above follows the optical path in the right lens 26, which is made of a diffractive waveguide, as described above. Figure 1a As shown. Because the relative positions of the optical engine and the lens cannot be adjusted, the light path of the light emitted from the optical engine 400 in the right lens 26 cannot be changed. Therefore, the direction of the light coupled out from the coupling grating on the right lens 26 cannot be changed. Consequently, the position of the virtual image is also fixed, making it difficult to meet the user's needs for different virtual image positions.

[0173] For example, in some cases, the optical engine is fixed to the lens frame. When using a monocular display device, the virtual image is generally located directly in front of the user's line of sight. Some users, however, feel that a virtual image directly in front of their line of sight obstructs their view and affects their perception of the real world environment. They prefer the virtual image to be positioned slightly to the left or right of their line of sight. In this situation, because the optical engine is fixed to the lens frame, it is difficult to adjust the position of the virtual image to the user's desired location.

[0174] For example, when using a binocular display device, the distance between the virtual image and the line connecting the pupils of the human eye (hereinafter referred to as the virtual image distance) is generally fixed. However, different virtual image distances may be needed in different usage scenarios to make the human eye more comfortable to view. For instance, when working or studying indoors, the virtual image distance may be adjusted to 0.5 to 1 meter; when walking outdoors, the virtual image distance may be adjusted to 3 to 5 meters; and when cycling, the virtual image distance may be adjusted to more than 5 meters. In these cases, because the optical engine is fixed to the lens frame, it is impossible to adjust the virtual image distance according to the scenario.

[0175] As mentioned earlier, for AR glasses, the position of the virtual image is related to the direction of the light rays coupled out through the coupling grating and entering the human eye. Therefore, to solve the above problem, this application provides an AR glasses with an adjustable relative position between the optical engine and the lens. By changing the incident angle of the optical engine light rays incident on the coupling grating on the lens, the position or distance of the virtual image can be changed. For example, in some embodiments, the optical engine of the AR glasses is fixed to the temple by a display angle adjustment component. By controlling the display angle adjustment component, the incident angle of the light rays emitted by the optical engine to the coupling grating on the lens can be adjusted, thereby adjusting the angle of the outgoing light rays coupled out through the coupling grating, ultimately achieving the adjustment of the virtual image position and virtual image distance.

[0176] Among them, the angle adjustment component can adjust the angle between the emitted light from the optical engine and the lens from all directions and multiple angles. For example, the angle between the emitted light from the optical engine and the lens can be adjusted in the X-axis direction (the direction of the line connecting the user's two pupils) and the Y-axis direction (the direction perpendicular to the line connecting the user's two pupils, or the direction of human height). This allows adjustment of the angle of the emitted light coupled out through the coupling grating, ultimately adjusting the position and distance of the virtual image that the human eye can see.

[0177] Specifically, for example, when the emission direction of the outgoing light rays from the optical engine changes in the X-axis direction, the change in the position of the virtual image is a change in the X-axis direction; when the emission direction of the outgoing light rays from the optical engine changes in the Y-axis direction, the change in the position of the virtual image is a change in the Y-axis direction.

[0178] Furthermore, it is understood that in the embodiments of this application, the display angle adjustment component can be implemented by various mechanical structures, and the user can manually adjust the display angle adjustment component to change the position of the optical engine relative to the lens.

[0179] In some embodiments, the user can also send control commands, such as voice control commands, to the display angle adjustment component, which will then execute the commands to change the position of the optical engine relative to the lens.

[0180] In some embodiments, the AR glasses can also automatically adjust the position of the optical engine relative to the lenses. For example, the AR glasses can automatically identify the gaze point of the human eye and then automatically adjust the position of the optical engine relative to the lenses to align the virtual image position with the gaze point of the human eye. Furthermore, in some embodiments, the AR glasses can also automatically identify the gaze point of the human eye and then adjust the virtual image position to the gaze point of the human eye using image processing algorithms, without adjusting the position of the optical engine relative to the lenses. This will be described in detail below.

[0181] Furthermore, it is understood that in other embodiments of this application, in addition to adjusting the position of the optical engine to change the position of the optical engine relative to the lens, the position of the optical engine relative to the lens can also be changed by adjusting the position of the lens, thereby realizing the adjustment of the virtual image position and virtual image distance, which will be described in detail below.

[0182] The following example, using a monocular display AR glasses 10, illustrates the relationship between the angle between the emitted light from the optical engine and the lens in the X-axis direction, and the position of the final image, in the embodiments of this application.

[0183] Single-eye optical principle

[0184] Figures 3a to 3e This illustrates the principle behind how the position of the virtual image changes due to different angles between the emitted light rays from the optical engine 400 and the lens in a monocular AR display. The following explanation uses the central principal ray as an example; light rays at other angles change synchronously with the central principal ray.

[0185] in, Figures 3a-3c These images show monocular AR glasses with the left and right lenses on the same plane from different viewing angles (e.g., ...). Figure 4a As shown, the different angles between the emitted light rays from the optical engine 400 and the lenses cause changes in the position of the virtual image in the horizontal direction. It can be understood that the left and right lenses of the AR glasses 10 being on the same plane means that the surfaces on the left lens of the AR glasses 10 where the output and input gratings are located are on the same plane as the surfaces on the right lens 26 where the output and input gratings are located.

[0186] Specifically, such as Figure 3a and Figure 3c As shown, when the ray i1 emitted by the optical engine 400 is perpendicular to the right mirror (i.e., the optical engine 400 and the mirror are in a first positional relationship, and the angle between the ray i1 emitted by the optical engine 400 and the mirror is a first angle), as... Figure 3a The position of the optical engine shown in the diagram results in the final image 300 being located directly in front of the viewer's line of sight.

[0187] like Figure 3a and Figure 3c As shown, the light ray i1 emitted by the optomechanical system 400 enters the coupling grating 101 of the right mirror 26 perpendicularly. That is, the exit direction of the light ray i1 is parallel to the normal P1 of the right mirror 26. The original propagation direction is changed by diffraction through the coupling grating 101, and it propagates towards the bottom of the waveguide substrate 101 at a diffraction angle α1. Then, it undergoes total internal reflection between the upper and lower surfaces of the waveguide substrate 101. During the total internal reflection propagation of light ray i1 in the waveguide substrate 101, it still enters the coupling grating 103 at position D1 on the surface of the waveguide substrate 101 at an incident angle α1. At position D1, a portion of the light ray i11 is released through diffraction by the coupling grating 103. Since the diffraction parameters of the coupling grating 103 and the coupling grating 102 are the same, that is, if the light ray enters through the coupling grating 102 and the coupling grating 103, the diffraction angle is the same. Therefore, the exit angle of the light ray i11 remains perpendicular to the right mirror 26. The remaining portion of the light rays i12 continues to propagate through total internal reflection within the waveguide substrate 101. During subsequent propagation, when the light rays i12 strike the coupling grating 103 on the surface of the waveguide substrate 101, the same phenomenon occurs. Ultimately, the resulting virtual image 300 is positioned directly in front of the viewer's line of sight.

[0188] and Figure 3a The position of the Zhongguangji 400 is different. Figure 3b The diagram illustrates the propagation of light after the optical engine 400 is rotated by an angle 'a' around the positive direction of the Y-axis and X-axis via the display angle adjustment component. It can be seen that the final virtual image 303 is deflected by an angle 'a' around the negative direction of the Y-axis and X-axis compared to the scene shown in 3a. That is, the optical engine 400 and the lens have a second positional relationship, and the angle between the light ray i1 emitted by the optical engine 400 and the lens is a second angle.

[0189] like Figure 3b and Figure 3cAs shown, when the optomechanical system 400 is rotated by an angle 'a' around the Y-axis in the positive direction of the X-axis, the light ray i1 enters the coupling grating 101 at an incident angle 'a'. The diffraction of the coupling grating 101 changes its original propagation direction, and the ray then propagates towards the bottom of the waveguide substrate 101 at a diffraction angle 'a2'. Based on the characteristics of the waveguide substrate 101, the light ray i1 coupled to the waveguide substrate 101 via the coupling grating can propagate through total internal reflection between the upper and lower surfaces of the waveguide substrate 101. During the total internal reflection propagation of the light ray i1 in the waveguide substrate 101, it still enters the coupling grating 103 at position D1 on the surface of the waveguide substrate 101 at an incident angle 'a2'. At position D1, a portion of the light ray i11 is released through diffraction of the coupling grating 103. Because the diffraction parameters of the coupling grating 103 and the coupling grating are consistent, the exit angle of the light ray i11 is still angle 'a' as it exits the coupling grating 103. The remaining portion of the light rays i12 continues to propagate through total internal reflection within the waveguide substrate 101. During subsequent propagation, when these rays i12 strike the coupling grating 103 on the surface of the waveguide substrate 101, the same phenomenon occurs. Ultimately, the virtual image 303 is positioned directly in front of the viewer's line of sight, deflected by an angle α in the negative direction around the Y-axis and X-axis.

[0190] The above Figures 3a-3c Taking the left lens 25 and right lens 26 of AR glasses 10 as an example where they are in the same plane, we can illustrate the change in the position of the virtual image. For AR glasses 10 where the left lens 25 and right lens 26 are in different planes, changing the angle between the outgoing light rays of the optical engine and the lenses can also change the position of the final image of the virtual image.

[0191] Figure 3d This illustrates the change in the position of the virtual image in the horizontal direction caused by the different angles between the emitted rays from the optical engine 400 and the lenses in a monocular AR glasses 10 where the left and right lenses are located in different planes. For example, refer to... Figure 11 Taking the angle between the left lens 25 and the plane h1 perpendicular to the line of sight directly in front of the human eye as α, with the optical engine 400 mounted on the right temple 22 and the light ray i1 emitted by the optical engine 400 perpendicular to plane h1 as an example, the final virtual image 300 is located at a position where the line of sight P2 directly in front of the human eye is deflected by an angle 2α in the negative direction around the Y-axis and X-axis. It can be understood that for... Figure 3d The position of the virtual image 300 in the X-axis direction of the monocular AR glasses shown changes with the position of the optical engine 400. The resulting positional change in the X-axis direction can be referenced. Figure 3c .

[0192] Specifically, such as Figure 3dAs shown, if the incident ray i1 enters the coupling grating 101 at an angle α with the normal P1 of the right lens 26, according to the aforementioned principle of light propagation within the waveguide substrate 101, the angle between the ray's exit angle and the normal P1 when it exits the coupling grating 103 is also α. Since the plane containing the right lens 26 is a plane with an angle α with plane h1, the angle between the normal P1 of the right lens 26 and the normal of plane h1 is also α. Therefore, the angle between the ray's exit angle from the coupling grating 103 and the line of sight directly in front of the human eye is 2α, meaning the virtual image 300 is located at a position where the line of sight P2 directly in front of the human eye is deflected by an angle 2α in the negative direction of the X-axis around the Y-axis.

[0193] At this time, if the user wants the virtual image 300 to be deflected in the positive direction of the Y-axis and X-axis to a position directly in front of the user's line of sight, the optical engine 400 can be rotated by an angle 2a in the negative direction of the Y-axis and X-axis; if the user wants the position of the virtual image 300 of the optical engine 400 to be deflected in the negative direction of the Y-axis and X-axis, the optical engine 400 can be rotated in the positive direction of the Y-axis and X-axis. In summary, the AR glasses 10 provided in this application embodiment can achieve the adjustment of the optical engine position under different glasses shapes, thereby achieving the adjustment of the virtual image position.

[0194] It is understood that although the above only illustrates the optical principle of adjusting the angle between the incident ray of the optical engine and the lens in the X-axis direction to adjust the position of the virtual image in the X-axis direction, in the various embodiments of this application, the position of the optical engine can be adjusted from various directions, not limited to the X-axis direction, and the optical principle of adjusting the position of the virtual image is the same. For example, when adjusting the angle between the incident ray of the optical engine and the lens in the Y-direction, such as the direction of human body height, the position of the virtual image can be adjusted in the Y-direction. For example, Figure 3e This illustrates a monocular display AR glasses with both lenses on the same plane (e.g., Figure 4a As shown in the figure, the angle between the incident ray from the optical engine 400 and the right mirror 26 is different, resulting in a change in the position of the virtual image in the vertical direction.

[0195] Specifically, such as Figure 3eAs shown, when the optical engine 400 is perpendicular to the right lens 26, that is, the light ray i1 emitted by the optical engine 400 is perpendicular to the coupling grating 102 on the right lens 26, as described above regarding the optical principle of adjusting the position of the virtual image in the horizontal direction, the light ray i11 emitted through the coupling grating 103 enters the human eye perpendicularly, meaning the final image 300 is located directly in front of the human eye's line of sight. When the optical engine is rotated by an angle 'a' around the positive direction of the X-axis and Y-axis, the angle between the light ray i3 emitted by the optical engine 400 and the normal of the right lens 26 is 'a'. Then, as described above regarding the optical principle of adjusting the position of the virtual image in the X-axis direction, the angle between the light ray i31 emitted through the coupling grating 103 and the normal of the right lens 26 is 'a', entering the human eye, meaning the final image 303 is located directly in front of the human eye's line of sight, deflected by an angle 'a' around the negative direction of the X-axis and Y-axis.

[0196] As can be seen from the above light propagation process, when the diffraction parameters of the input and output gratings are consistent, the angle at which the light enters the waveguide substrate and the angle at which the light exits the waveguide substrate are symmetrical about the normal to the plane of the optical waveguide substrate. The relationship between the exit angle and the incident angle will not be described in detail below.

[0197] In some embodiments, if a user wants the virtual image to be directly in front of their line of sight, but some users have larger head circumferences, they may need to spread the temples open, causing the optical engine to deviate from its perpendicular position to the lenses. This results in an angular deviation in the position of the virtual image seen by the user. In this case, the user can adjust the angle of the optical engine using the aforementioned display angle adjustment component to ensure that the virtual image remains directly in front of the user. Therefore, the AR glasses provided in this application embodiment can be used by users with different head circumferences and can meet users' different needs for the position of the virtual image.

[0198] Monocular AR Glasses 10

[0199] Based on the above optical principles, the following is combined with Figure 4a This application provides a monocular display AR glasses 10 with left and right lenses on the same plane, as described in the embodiments of this application.

[0200] like Figure 4a As shown, the AR glasses 10 may include a frame, lenses, a left folding mechanism 27, a right folding structure 28, an optical engine 400, and a display angle adjustment assembly.

[0201] In some embodiments, the frame portion may include a left temple 21, a right temple 22, a left frame 23, and a right frame 24, and the lens portion may include a left lens 25 and a right lens 26. One of the left lens 25 and the right lens 26 may employ an optical waveguide structure. Specifically, one of the left lens 25 and the right lens 26 may employ an optical waveguide structure in its entirety or in part, for example... Figure 4aThe diagram below shows the structure of AR glasses 10, with the right lens 26 employing an optical waveguide structure as an example.

[0202] In some embodiments, the left folding structure 27 and the right folding structure 28 can be the same structure; the right folding mechanism 28 will be used as an example for explanation. Figure 4b As shown, the right-folding structure 28 may include a first fixing arm 281, a second fixing arm 282, and a pivot 283. One end of the first fixing arm 281 is fixed to the right frame 24, and the other end of the first fixing arm 281 is connected to one end of the second fixing arm 282 via the pivot 283. The other end of the second fixing arm 282 is connected to the right temple 22. The right temple 22 can be folded and opened by rotating the second fixing arm 282 around the pivot 283.

[0203] In some embodiments, the second fixing arm 282 and the right temple 22 may be connected by a connector; in some embodiments, the second fixing arm 282 may be a part of the right temple 22.

[0204] It is understood that in the various embodiments of this application, the display angle adjustment component can be a manual display angle adjustment component or an automatic display angle adjustment component. The following examples illustrate the configuration schemes of the manual display angle adjustment component in some embodiments of this application.

[0205] Manual display angle adjustment component

[0206] In some embodiments, such as Figure 4a and Figure 4c As shown, the display angle adjustment assembly may include a third fixed arm 291 and a rotating structure 292. One end of the third fixed arm 291 is fixed to the second fixed arm 282 of the right-folding structure 28, and the optical engine 400 is fixed to the other end of the third fixed arm 291 via the rotating structure 292. The optical engine 400 can achieve omnidirectional, multi-angle position adjustment via the rotating structure 292.

[0207] in, Figure 5 Showing Figure 4a The diagram shows the AR glasses with the two temples folded down. Figure 5 As shown, when the optical engine 400 is fixed to the second fixed arm 282 via the third fixed arm 291, the optical engine 400 is decoupled from the right frame 24, that is, it is not connected to the right frame 24, but its position changes with the folding and opening of the right temple 22.

[0208] In some embodiments, one end of the third fixing arm 291 may also be fixed to the first fixing arm 281 of the right folding structure 28, and the optical engine 400 may be fixed to the other end of the third fixing arm 291 by the rotating structure 292.

[0209] In some embodiments, Figure 4c The rotating structure 292 in the middle can be as follows Figure 4d The diagram shows a universal joint, which may include a ball joint 2922 and a ball sleeve 2921. The ball joint 2922 may be mounted on the optical engine 400, and the ball sleeve 2921 may be mounted on the third fixed arm 291. The ball joint 2922 may be engaged within the ball sleeve 2921 and rotate 360 ​​degrees within the ball sleeve 2921. In some embodiments, Figure 4c The rotating structure 292 in the text can also be other structures that can achieve multi-angle rotation.

[0210] When the display angle adjustment component adopts the above-described implementation scheme including the third fixed arm 291 and the rotating structure 292, if the user needs to adjust the position of the optical engine 400, he / she can directly manually turn the optical engine 400 to rotate it to adjust the position of the optical engine 400.

[0211] Apart from Figure 4c and 4d The display angle adjustment component shown may, in some embodiments, also employ, as... Figure 4e The display angle adjustment component is shown. (Example) Figure 4e As shown, the display angle adjustment assembly may include a rotating arm 2911. The rotating arm 2911 may be made of a material that can be bent at multiple angles, such as metal, or the third fixed arm may be composed of multiple chain links that can rotate at multiple angles connected end-to-end to achieve multi-angle rotation of the rotating arm 2911. One end of the rotating arm 2911 is fixed to the second fixed arm 282, and the optical engine 400 is fixedly connected to the other end of the rotating arm 2911.

[0212] When the display angle adjustment component adopts the above-described implementation scheme including the rotating arm 2911, when the user wants to adjust the angle of the optical engine 400, the position of the optical engine 400 can be adjusted by manually turning the rotating arm 2911.

[0213] In some embodiments, Figure 4c The third fixed arm 291 can also be replaced by a rotating arm 2911. In this case, the position of the optical engine 400 can be adjusted by either manually turning the rotating arm 2911 or by manually turning the optical engine 400.

[0214] In some embodiments, such as Figure 4f As shown, the optical engine 400 of the AR glasses is fixed on the right frame 24. The flexible printed circuit board 404 (or other type of communication cable) used for the circuit control of the optical engine 400 is connected to the main board 221 of the AR glasses inside the right temple 22 via the pivot 28.

[0215] And in Figure 4f In the middle, the optical engine 400 is fixed on the right frame 24, and the flexible printed circuit board 404 needs to be connected to the main board 221 via the pivot 28. Therefore, as Figure 4g As shown, the flexible printed circuit board 404 of the optical engine 400 bends as the right temple 22 folds. Thus, the longer the user uses the AR glasses, the more often the right temple 22 folds and unfolds, which may easily damage the flexible printed circuit board 404.

[0216] Thus, the above-mentioned provisions of this application are adopted. Figure 4a When the optical engine 400 is fixed to the second fixed arm 282 via the third fixed arm 291, as mentioned above, Figure 4h As shown, the flexible printed circuit board 404 of the optical engine 400 can be connected to the main board 221 of the AR glasses without going through the hinge 28. Therefore, as Figure 4i As shown, when the right temple 22 is folded, the flexible printed circuit board 404 of the optical engine 400 will not bend. Therefore, even if the right temple 22 is folded and opened multiple times, the flexible printed circuit board 404 will not be damaged.

[0217] It is understandable that, for the display angle adjustment component, in addition to the above... Figures 4c to 4i The implementation scheme mentioned above can also be achieved using other structures, and is not limited to this, as long as the position of the optical engine can be changed.

[0218] Automatic display angle adjustment component

[0219] The following describes the setting scheme for the automatic display angle adjustment component in the embodiments of this application.

[0220] For example, with Figure 4a Taking the monocular display AR glasses 10 shown as an example, Figure 6a An automatic display angle adjustment component is shown. For example... Figure 6a As shown, in some embodiments of this application, the automatic display angle adjustment component may include a third fixed arm 291, a rotating structure 292, an electric motor 295, a telescopic structure, a first button 296, and a second button 297.

[0221] One end of the third fixed arm 291 is fixed to the second fixed arm 282, and one side of the optical engine 400 is fixed to the other end of the third fixed arm 291 through the rotating structure 292. The optical engine 400 can rotate around the third fixed arm 291 through the rotating structure 292.

[0222] The electric motor 295 can be connected to the main board 221 of the AR glasses 10, and the main board 221 of the AR glasses 10 can be located inside the right temple 22 of the AR glasses.

[0223] In some embodiments, the telescopic structure may include a telescopic sleeve, which may include an outer sleeve 294 and an inner sleeve 293. One end of the inner sleeve 293 is fixed to a position offset by a predetermined distance in the negative X-axis direction or in the positive X-axis direction from the bottom center point of the optical engine 400, so that when the inner sleeve 293 moves in the positive Z-axis direction or in the negative Z-axis direction, it can drive the optical engine 400 to rotate around the negative X-axis direction or the positive X-axis direction. The other end of the inner sleeve 293 is slidably connected to the inner wall of the outer sleeve 294, and the outer sleeve 294 is fixed to an electric motor 295. The electric motor 295 can control the inner sleeve 293 to move along the inner wall of the outer sleeve 294 in the positive Z-axis direction or in the negative Z-axis direction, so as to drive one side of the optical engine 400 to move in the positive Z-axis direction or in the negative Z-axis direction. If one side of the optical engine 400 moves along the positive or negative Z-axis, the optical engine 400 will rotate around the negative X-axis or the positive X-axis, thereby adjusting the angle of the emitted light beam.

[0224] In some embodiments, the inner sleeve 293 can be connected to the optical engine 400 by means of snap-fit, adhesive, bolt connection, etc.

[0225] The first button 296 and the second button 297 can both be located on the right temple 22, and both buttons 296 and 297 are connected to the processor of the AR glasses 10. The first button 296 and the second button 297 can be used to control the extension and retraction of the telescopic structure, respectively. It is understood that the processor of the AR glasses 10 can be a central processing unit (CPU), which is the controller that controls the normal operation of all circuits and electronic components in the AR glasses. In other embodiments of this application, a separate processing device can also be used to receive the control commands from the first button 296 and the second button 297 to control the operation of the electric motor 295.

[0226] It should be noted that the use of buttons to control the extension and retraction of the telescopic structure in this embodiment is merely an example, and this application is not limited to other structures. For example, it can be in the form of a knob or a virtual button. The positions of the first button 296 and the second button 297 can also be adjusted according to actual needs. In this embodiment, the method of controlling the extension and retraction of the telescopic structure can also be without physical buttons, but rather with virtual buttons on a touchscreen. In some embodiments, it can also be done through voice commands, gesture commands, etc.

[0227] In the above embodiments, the automatic display angle adjustment component is used to adjust the position of the virtual image in the X-axis direction (interpupillary distance direction). In some embodiments, the same method can be used to adjust the position of the virtual image in the Y-axis direction (human height direction) or simultaneously adjust the position of the optical engine in all directions.

[0228] For example, in some embodiments, if the display angle adjustment component is used to adjust the position of the virtual image in the human body height direction, i.e., the Y-axis direction, the difference between the display angle adjustment component and the above-mentioned scheme for adjusting the position of the optical engine in the X-axis direction is that the top of the inner sleeve is fixed to the bottom of the optical engine in a different position.

[0229] For example, in the display angle adjustment component that adjusts the position of the virtual image along the X-axis, such as Figure 6b As shown in the schematic diagram of the bottom of the optical engine 400, the top end of the inner sleeve is fixed at position 002, which is offset by a set distance in the negative X-axis direction, or position 001, which is offset by a set distance in the positive X-axis direction (near the connection end between the third fixed arm 291 and the optical engine 400), so that when the inner sleeve moves in the positive Z-axis direction or in the negative Z-axis direction, it can drive the optical engine 400 to rotate around the negative X-axis direction and in the positive X-axis direction.

[0230] And such Figure 6c As shown in the schematic diagram of the bottom of the optical engine, when it is necessary to realize the rotation of the optical engine around the X-axis in the negative direction of the Y-axis or in the positive direction of the Y-axis, the top of the inner sleeve is fixed at the bottom of the optical engine 400 at a position 003 offset by a set distance in the positive direction of the Y-axis or a position 004 offset by a set distance in the negative direction of the Y-axis from the center point of the bottom of the optical engine 400. This allows the optical engine 400 to rotate around the X-axis in the positive direction of the Y-axis or in the negative direction of the Y-axis when the inner sleeve moves along the Z-axis in the positive direction or along the Z-axis in the negative direction.

[0231] It is understood that the fixed positions of the top end of the inner sleeve and the bottom of the optical engine 400 in the embodiments of this application are illustrative. It is understood that in the embodiments of this application, the fixed positions of the top end of the inner sleeve and the bottom of the optical engine 400 can be any positions that can drive the optical engine 400 to rotate around the X-axis in the negative direction of the Y-axis or in the positive direction of the Y-axis when the inner sleeve is along the positive direction of the Z-axis or along the negative direction of the Z-axis, or drive the optical engine 400 to rotate around the Y-axis in the negative direction of the X-axis and in the positive direction of the X-axis.

[0232] In some embodiments, if the display angle adjustment component is used to achieve omnidirectional position adjustment of the virtual image, two electric motors and two retractable structures can be provided. The difference between this display angle adjustment component and the aforementioned scheme for achieving left-right adjustment of the virtual image position is the addition of an electric motor and a retractable structure.

[0233] like Figure 6dAs shown, the inner sleeves of the two telescopic sleeves are fixed at positions 002, where the top of the inner sleeve of one telescopic structure is fixed to the center point of the optical engine 400 at the bottom, offset by a predetermined distance along the negative X-axis. This allows the optical engine 400 to rotate around the Y-axis in the negative X-axis direction and towards the positive X-axis when the inner sleeve moves along the positive Z-axis direction or in the negative Z-axis direction. The top of the inner sleeve of the other telescopic structure is fixed to the bottom of the optical engine 400 at position 003, which is located at the center point of the bottom of the optical engine 400 and offset by a predetermined distance along the positive Y-axis direction. This allows the optical engine 400 to rotate around the X-axis in the positive Y-axis direction or towards the negative Y-axis direction when the inner sleeve moves along the positive Z-axis direction or in the negative Z-axis direction.

[0234] It is understood that in a display angle adjustment component used to achieve omnidirectional adjustment of the optical engine position, the number of buttons on the temple for controlling the extension and retraction of the telescopic structure can be four, for example, including a first button, a second button, a third button, and a fourth button. The first and second buttons can be used to control the extension and retraction of one of the telescopic structures. In other embodiments, the third and fourth buttons can be used to control the extension and retraction of the other telescopic structure.

[0235] The above is briefly described below. Figure 6a The working principle of the automatic display angle adjustment component for rotating the optical engine along the X-axis is as follows:

[0236] like Figure 7 As shown, when the user presses the first button 296, the processor receives the instruction to control the extension of the telescopic structure, and controls the electric motor 295 to drive the inner sleeve 293 to move in the negative direction of the Z-axis. When the inner sleeve 293 moves in the negative direction of the Z-axis, it can push the bottom right side of the optical engine 400 to gradually move in the negative direction of the Z-axis, thereby driving the optical engine 400 to rotate around the third fixed arm 291 in the positive direction of the X-axis, thereby changing the angle of the emitted light from the optical engine 400 relative to the optical waveguide structure, and thus changing the position of the virtual image formed by the AR glasses 10.

[0237] like Figure 8 As shown, when the user presses the second button 297, the processor receives a command to shorten the telescopic structure. It then controls the electric motor 295 to drive the inner sleeve 293 in the positive Z-axis direction. As the inner sleeve 293 moves in the positive Z-axis direction, it pulls the bottom right side of the optical engine 400 gradually in the positive Z-axis direction, thereby causing the optical engine 400 to rotate around the third fixed arm 291 in the negative X-axis direction. This changes the angle of the emitted light from the optical engine 400 relative to the optical waveguide structure, thus altering the position of the virtual image formed by the AR glasses 10.

[0238] In other embodiments, to further enhance the stability of the optical engine 400 during rotation, a connection structure can be provided on the opposite side of the third fixed arm 291. For example... Figure 9a As shown, when the display angle adjustment component is used to realize the rotation of the optical engine in the X-axis direction, a connecting post 402 can be provided on the opposite side of the optical engine 400 that is not connected to the third fixed arm 291, and a connecting ring 401 can be provided at the top of the inner sleeve 293.

[0239] In some embodiments, when the display angle adjustment component is used to achieve rotation of the optical engine along the Y-axis, then Figure 9a The central connecting post 402 can be any adjacent side fixed to the optical engine 400 that is not connected to the third fixed arm 291.

[0240] It is understood that in this embodiment of the application, the scheme of the display angle adjustment component realizing the rotation of the optical engine along the X-axis and Y-axis is only an exemplary illustration. In this embodiment of the application, the rotation of the optical engine at different angles can be achieved by adjusting the connection position of the telescopic sleeve at the bottom of the optical engine. The direction of the optical engine rotation can be the direction of the line connecting the connection point of the telescopic sleeve at the bottom of the optical engine and the center point of the bottom of the optical engine.

[0241] Among them, such as Figure 9b As shown, the connecting ring 401 can be fitted onto the connecting post 402, and the inner diameter of the connecting ring 401 can be equal to the outer diameter of the connecting post 402. That is, the connecting ring 401 can fit snugly onto the connecting post 402. In this case, the working principle of the automatic angle adjustment component is as follows:

[0242] When the user presses the first button 296, the processor receives the instruction to control the extension of the telescopic structure. It will control the electric motor 295 to drive the inner sleeve 293 to move in the negative direction of the Z-axis. When the inner sleeve 293 moves in the negative direction of the Z-axis, it can drive the bottom right side of the optical engine 400 to gradually move in the negative direction of the Z-axis through the connecting ring 401 and the connecting column 402. This will drive the optical engine 400 to rotate around the third fixed arm 291 in the positive direction of the x-axis, thereby changing the angle of the emitted light from the optical engine 400 relative to the optical waveguide structure, and thus changing the position of the virtual image formed by the AR glasses 10.

[0243] When the user presses the second button 297, the processor receives a command to shorten the telescopic structure. It then controls the electric motor 295 to drive the inner sleeve 293 to move in the positive direction of the Z-axis. When the inner sleeve 293 moves in the positive direction of the Z-axis, it can drive the bottom right side of the optical engine 400 to gradually move in the positive direction of the Z-axis through the connecting ring 401 and the connecting post 402. This causes the optical engine 400 to rotate around the third fixed arm 291 in the negative direction of the x-axis, thereby changing the angle of the emitted light from the optical engine 400 relative to the optical waveguide structure, and thus changing the position of the virtual image formed by the AR glasses 10.

[0244] In some embodiments, to effectively prevent the user from accidentally pressing the first button 296 or the second button 297, causing the optical engine angle to be adjusted, such as... Figure 9c As shown, the inner diameter of the connecting ring 401 can also be larger than the outer diameter of the connecting post 402, that is, there is a gap between the connecting ring 401 and the connecting post 402. The size L1 of the gap can be the distance the telescopic structure extends when the first button 296 is clicked once, or the distance the telescopic structure shortens when the second button 297 is clicked once. It can be understood that in the embodiments of this application, the connecting ring 401 and the connecting post 402 can be coaxially arranged.

[0245] At this time, when the user clicks the first button 296, the telescopic sleeve extends, and the inner sleeve 293 moves in the negative Z-axis direction. At this time, the lower ends of the connecting ring 401 and the connecting post 402 may be close to or just in contact, but the optical engine 400 is not rotated. When the user clicks the second button 297, the telescopic sleeve shortens, and the inner sleeve 293 moves in the positive Z-axis direction. At this time, the upper ends of the connecting ring 401 and the connecting post 402 may be close to or just in contact, but the optical engine 400 is not rotated. This implementation can effectively avoid the situation where the user accidentally touches the first button 296 or the second button 297, causing the angle of the optical engine 400 to be adjusted. That is, in some embodiments of this application, the angle of the optical engine 400 will only change when the user triggers the first button 296 or the second button 297 for the second time.

[0246] In some embodiments, such as Figure 10a and Figure 10b As shown, a stop 403 can also be provided at the end of the connecting post 402 that is not connected to the optical engine 400. The stop 403 can prevent the connecting ring 401 from slipping off the connecting post 402. In some embodiments, the stop 403 includes, but is not limited to, components such as a stop plate or a nut.

[0247] It is understood that, for the first button 296 and the second button 297, in some embodiments, the telescopic structure can be set to extend by a set distance each time the first button 296 is pressed. For example, when the first button 296 is pressed for the first time, the processor controls the electric motor 295 to drive the inner sleeve 293 of the telescopic structure to extend by 0.5mm in the negative Z-axis direction. If the first button 296 is pressed again, the telescopic structure will again extend by 0.5mm in the negative Z-axis direction. Furthermore, it can be set that the telescopic structure continuously extends when the first button 296 is pressed for a long time, and continuously shortens when the second button 297 is pressed for a long time. Specifically, before reaching the limit distance that the telescopic structure can extend or shorten, the duration of pressing the first button 296 is proportional to the distance the telescopic structure extends, and the duration of pressing the second button 297 is proportional to the distance the telescopic structure shortens.

[0248] In addition to the button-controlled telescopic structure technology mentioned above, in some other embodiments, an audio acquisition device, such as a microphone, can be installed in the monocular AR glasses 10, allowing the user to control the position change of the optical engine 400 by issuing voice commands. For example, when the user issues a voice command to "rotate 30 degrees to the left," the microphone picks up the voice command and sends it to the processor of the monocular AR glasses 10. The processor recognizes the voice command and then controls the electric motor 295 to drive the inner sleeve 293 of the telescopic structure to extend a set length in the negative Z-axis direction, thereby achieving a 30-degree rotation of the optical engine 400 around the positive X-axis direction.

[0249] Furthermore, in some embodiments, to ensure that the virtual image remains at the initial virtual image position set within the AR glasses when worn by different users (e.g., directly in front of the user's line of sight), a sensing structure, such as a sensor, can be installed on the temples. This sensor can be connected to a processor and detect the deflection angle of the temples from their initial state to their current state. The processor can then automatically adjust the rotation angle of the optomechanism based on this temple deflection angle. This ensures that the angle between the light emitted from the optomechanism and the lens returns to its initial position, thus ensuring the virtual image's position returns to the initial virtual image position set within the AR glasses.

[0250] For example, the optical engine is fixed to the right temple, and initially, the light emitted by the optical engine is perpendicular to the right lens. If the user has a large head circumference, the right temple is opened by 5 degrees. When the sensor detects that the temple has changed from its initial state to its current state (i.e., deflected by 5 degrees around the Y-axis in the negative X-axis direction), the processor can control the optical engine to rotate 5 degrees around the Y-axis in the negative X-axis direction to ensure that the angle between the light emitted by the optical engine and the lens returns to its initial position. The processor's control scheme for the optical engine rotation is as described above and will not be repeated here.

[0251] In some embodiments, AR glasses can also automatically adjust the position of the optical engine relative to the lens according to the gaze point position and gaze depth of the human eye, so that the position of the virtual image is adjusted to the gaze point position of the human eye, and the virtual image distance matches the gaze depth of the human eye.

[0252] The method by which monocular display AR glasses automatically adjust the position of the optical engine relative to the lens according to the direction of human eye gaze can be as follows:

[0253] 1) Obtain the user's eye image.

[0254] For monocular display AR glasses, a camera can be placed in front of the lens with an optical waveguide structure to capture real-time images of the user's eyes. For example, if the right lens is a lens with an optical waveguide structure, the camera can be fixed to the right frame to capture real-time images of the user's right eye.

[0255] 2) Obtain the user's gaze direction based on the user's eye image.

[0256] For example, in this embodiment of the application, since the camera can capture the user's right eye image in real time, the AR glasses can process the user's right eye image captured in real time using some image processing algorithms or image recognition algorithms to determine the user's right eye gaze direction.

[0257] 3) Adjust the position of the virtual image formed by the AR glasses according to the user's gaze direction.

[0258] For example, the AR glasses provided in this application embodiment can adjust the angle of the optical engine on the right temple in real time according to the real-time change of the user's right eye's gaze direction, so as to adjust the position of the virtual image to the gaze direction of the human eye.

[0259] For example, when a user is wearing AR glasses, initially, the AR glasses determine the user's right eye gaze direction as directly in front of the right eye based on the image captured by the camera, for example, position one. At this time, the AR glasses can automatically adjust the angle of the optical mechanism on the right temple to adjust the virtual image position to be directly in front of the user's right eye. After a period of time, the AR glasses determine the user's right eye gaze direction as being to the right front of the right eye based on the image captured by the camera, for example, position two. At this time, the AR glasses can automatically adjust the angle of the optical mechanism to adjust the virtual image position to be to the right front of the user's right eye.

[0260] In some embodiments, the camera can capture an image of the user's right eye and send it to the processor of the AR glasses. The processor of the AR glasses can process the image of the user's right eye according to an image processing algorithm or an image recognition algorithm, determine the direction of the user's right eye gaze, and adjust the optical-mechanical angle so that the position of the virtual image is adjusted to the direction of the human eye's gaze.

[0261] In some embodiments, the processor may also be equipped with an algorithm model related to determining the direction of human eye gaze. The algorithm model can determine the direction of the user's right eye gaze through the user's right eye image and make optical-mechanical angle adjustments so as to adjust the position of the virtual image to the direction of human eye gaze.

[0262] The processor-controlled optical engine angle adjustment scheme, as described above, can adjust the angle of the optical engine based on the angle adjustment component mentioned in the embodiments of this application. For example, the processor can adjust the position of the optical engine relative to the lens by controlling the movement of the telescopic structure.

[0263] In some embodiments, the processor-controlled optical engine angle adjustment scheme can also be to adjust the position of the optical engine relative to the lens by adjusting the position of the lens.

[0264] In some embodiments, the processor-controlled optical engine angle adjustment scheme can also be to directly control the rotation of the optical engine through some algorithm program, or to adjust the emission direction of light in the optical engine without adjusting the position of the optical engine. Other schemes are also possible in some embodiments.

[0265] The monocular display AR glasses 10 provided in the above embodiments of this application can adjust the angle between the light emitted by the optical engine and the lens through the display angle adjustment component, thereby adjusting the angle of the outgoing light emitted through the lens, and finally adjusting the position of the virtual image that can be seen by the human eye to meet the needs of different users.

[0266] In addition, in this embodiment, the optical engine is separated from the frame and connected to the temple, so that the relative angle between the optical engine and the lens can be adjusted and it is easy to disassemble and repair.

[0267] In the above embodiments, the display angle adjustment components are all located on the temples. It can be understood that in other embodiments of this application, the optical engine can also be located in other positions of the AR glasses using suitable display angle adjustment components. For example, it can be located on the left or right frame, i.e., the optical engine is located in front of the lenses; or it can be located on the nose pads. There are no limitations on this.

[0268] The above describes the monocular display AR glasses 10 with the left and right lenses on the same plane provided in the embodiments of this application. It can be understood that the monocular display AR glasses 10 with the left and right lenses not on the same plane can be the same as the monocular display AR glasses 10 with the left and right lenses on the same plane except for the angle of the lenses. Figure 11 This diagram illustrates the structure of a monocular display AR glasses where the left and right lenses are not on the same plane. It can be seen that... Figure 11 The left lens 25 and right lens 26 of the AR glasses are both at an angle α to the plane h1, and the left lens 25 and right lens 26 are symmetrically distributed. Other structures are shown in Figures 4-10 for monocular display AR glasses where the left and right lenses are not on the same plane, and will not be described in detail here.

[0269] Binocular optical principle

[0270] The monocular display AR glasses provided in the embodiments of this application have been described above. The binocular AR glasses provided in the embodiments of this application are briefly described below.

[0271] The following example, taking a binocular display AR glasses as an example, illustrates the relationship between the angle between the incident light of the optical engine and the lens in the horizontal direction and the distance between the final image and the line connecting the two pupils of the human eye in the embodiments of this application.

[0272] For example, Figure 12 The image shows a binocular display AR glasses 20 with the left lens 25 and right lens 26 on the same plane, as shown in the image. Figure 12 As shown, the left lens 25 and the right lens 26 are symmetrically distributed, and the plane containing the left lens 25 and the right lens 26 is parallel to plane h1, which is perpendicular to the line of sight directly in front of the human eye. The optical engine 400 is located on the right temple 22, and the emitted ray i1 is perpendicular to the right lens 26. The optical engine 500 is located on the left temple 21, and the emitted ray i2 is perpendicular to the left lens 25.

[0273] Figure 13-15 The changes in the position of the virtual image caused by different angles between the outgoing rays from the optical engine 400 and the lens are shown.

[0274] like Figure 13 As shown, when the optical engine 400 is located on the right temple 22 and the emitted ray i1 is perpendicular to the right lens 26, and the optical engine 500 is located on the left temple 21 and the emitted ray i2 is perpendicular to the left lens 25, then according to the aforementioned... Figure 3a The description of the optical principle in the monocular display AR glasses 10 shows that the virtual image projected by the optical engine 500 on the left temple 21, as seen by the human eye, is located directly in front of the left eye's line of sight, and the virtual image projected by the optical engine 400 on the right temple 22, as seen by the human eye, is located directly in front of the right eye's line of sight. That is, the vertical distance between the dotted line and the plane containing the human eye's interpupillary distance is infinity.

[0275] like Figure 14 and 15 As shown, when the optical engine 400 rotates by an angle *a* around the y-axis in the negative x-axis direction, the angle between the emitted ray i1 and the normal P1 of the right mirror 26 is angle *a1*; when the optical engine 500 rotates by an angle *a*1 around the y-axis in the positive x-axis direction, the angle between the emitted ray i2 and the normal P3 of the left mirror 25 is angle *a1*. Therefore, according to the aforementioned... Figure 3bAs described in the optical principle description of the monocular display AR glasses 10, the virtual image projected by the optical engine 400 on the left temple 21, as seen by the human eye, is located directly in front of the left eye's line of sight, deflected by an angle a1 in the negative direction around the Y-axis and x-axis. Similarly, the virtual image projected by the optical engine 400 on the right temple 22, as seen by the human eye, is located directly in front of the right eye's line of sight, deflected by an angle a1 in the positive direction around the Y-axis and x-axis. The line of sight between the virtual image 301 projected by the optical engine 400 on the left temple 21 (seen by the user's left eye) and the line of sight between the virtual image 302 projected by the optical engine 400 on the right temple 22 (seen by the user's right eye) intersects at point o1. This intersection point o1 is the position of the virtual image visible to the human eye.

[0276] At this point, the distance between the virtual image position and the pupillary distance of the human eye is the perpendicular distance between the intersection point o1 and the line connecting the two pupils of the human eye.

[0277] At this point, if the user needs to further reduce the distance between the virtual image and the line connecting the pupils of the human eye, they can continue to use the display angle adjustment component to rotate the optical engine 400 on the left temple 21 around the positive direction of the y-axis and x-axis by a set angle, for example, angle a2, and the optical engine 400 on the right temple 22 continues to rotate around the negative direction of the y-axis and x-axis by a set angle, for example, angle a2. Figure 15 The dashed ray is shown in the diagram. At this point, as described in the aforementioned monocular AR glasses 10, the position of the virtual image 301 projected by the optical engine 400 on the left temple 21, as seen by the user's eye, continues to deflect in the negative direction around the y-axis and x-axis, while the position of the virtual image 302 projected by the optical engine 400 on the right temple 22, as seen by the user's eye, continues to deflect in the positive direction around the y-axis and x-axis. At this time, the line of sight between the virtual image 301 projected by the optical engine 400 on the left temple 21 (seen by the user's left eye) and the line of sight between the virtual image 302 projected by the optical engine 400 on the right temple 22 (seen by the user's right eye) intersects at point o2. This intersection point o2 is the position of the virtual image that the user can see. The distance between the virtual image that the user can see and the interpupillary distance is the perpendicular distance between the intersection point o2 and the line connecting the two pupils, which is smaller than the perpendicular distance between the intersection point o1 and the line connecting the two pupils. This achieves the adjustment of the distance between the virtual image and the line connecting the two pupils.

[0278] Among them, when Figure 12 and 13 As shown, when the left lens 25 and the right lens 26 are on the same plane, if the light rays emitted by the optical engine 500 on the left temple 21 and the optical engine 400 on the left temple 22 are parallel to the normals of the left lens 25 and the right lens 26 respectively, then the distance of the virtual image is infinite.

[0279] And if... Figure 14 and Figure 15As shown, when the light emitted by the optical engine 500 on the left temple 21 and the optical engine 400 on the left temple 22 is not parallel to the normals of the left lens 25 and the right lens 26, the virtual image distance L is finite, and the distance L can be calculated by the following formula:

[0280] L = IPD / 2 / tanβ

[0281] Wherein, IPD (interpupillary distance) is the interpupillary distance of the human eye, and β is the angle between the outgoing ray from the lens mount and the normal to the corresponding mirror surface.

[0282] It should be noted that, in order to ensure the comfort of human eyes, the deflection angle of the left temple polishing machine is generally the same as that of the right temple polishing machine.

[0283] The above describes the changes in the position of the virtual image caused by the different angles between the emitted rays from the optical engine 500 on the left temple 21 and the optical engine 400 on the left temple 22 and the corresponding lenses when the left lens 25 and the right lens 26 are on the same plane in binocular display AR glasses.

[0284] The following is a brief description of the changes in the position of the virtual image caused by the different angles between the emitted rays from the optical engine 500 on the left temple 21 and the optical engine 400 on the left temple 22 and the corresponding lenses in binocular AR glasses when the left lens 25 and the right lens 26 are not on the same plane.

[0285] Figure 16 and 17 The diagram shows the changes in the position of the virtual image caused by the different angles between the outgoing rays from the optical engine 500 on the left temple 21 and the optical engine 400 on the left temple 22 and the corresponding lenses.

[0286] like Figure 16 As shown, the angles between the left lens 25 and the right lens 26 and the plane h1 are both angle α. The optical engine 400 is located on the right temple 22, and the angle between the emitted ray i1 and the normal to the plane h1 is β. From the aforementioned... Figure 3d As can be seen from the diagram, if ray i1 is incident at an angle α with the normal P1 of the right lens 26, that is, it is incident parallel to the normal of plane h1, then the angle of the virtual image formed is deflected by an angle 2α from the line of sight directly in front of the human eye. If the optical engine 400 gradually rotates by an angle α around the y-axis in the negative direction of the x-axis, then the virtual image formed gradually deflects around the y-axis in the positive direction of the x-axis. When the optical engine 400 rotates by an angle 2α around the y-axis in the negative direction of the x-axis, then the virtual image formed deflects by an angle 2α around the y-axis in the positive direction of the x-axis, that is, it is located directly in front of the line of sight of the human eye.

[0287] Therefore, as Figure 16As shown, the angles between the left lens 25 and the right lens 26 and the plane h1 are both angle 'a'. When the angle between the ray i1 emitted from the optical engine 400 on the right temple 26 and the normal to the plane h1 is β = 2a, the virtual image projected by the optical engine 400 on the right temple 22, as seen by the human eye, is directly in front of the right eye's line of sight. Similarly, when the angle between the ray i1 emitted from the optical engine 500 on the left temple 25 and the normal to the plane h1 is β = 2a, the virtual image projected by the optical engine 500 on the left temple 21, as seen by the human eye, is directly in front of the left eye's line of sight, meaning the position of the dotted line is at infinity from the plane containing the human eye's pupillary distance.

[0288] like Figure 17 As shown, when the optical engine 400 on the right temple 26 continues to rotate around the y-axis in the negative direction of the x-axis, and the optical engine 500 on the left temple 25 continues to rotate around the y-axis in the positive direction of the x-axis, that is, when β is greater than 2a, the virtual image projected by the optical engine 400 on the right temple 22, as seen by the human eye, is located slightly to the left of the right eye's line of sight, and the virtual image projected by the optical engine 500 on the left temple 21, as seen by the human eye, is located slightly to the right of the left eye's line of sight, as described above. Figure 14 As described, the line of sight between the virtual image 301 projected by the optical engine 400 on the left temple 21 as seen by the user's left eye and the line of sight between the virtual image 302 projected by the optical engine 400 on the right temple 22 as seen by the user's right eye will intersect at point o1. This intersection point o1 is the position of the virtual image that the user can see. At this time, the distance between the virtual image position and the interpupillary distance of the user's eye is the perpendicular distance between the intersection point o1 and the line connecting the two pupils of the user's eye.

[0289] When β > 2α, the distance L of the virtual image is calculated using the following formula.

[0290] L = IPD / 2 / tan(β-2a).

[0291] The following describes a binocular display AR glasses 20 provided in an embodiment of this application, such as... Figure 17 As shown, the binocular display AR glasses 20 are similar to those in Figure 4 above. Figure 11 The difference in the mid-range monocular display AR glasses 10 is that both the left lens 25 and the right lens 26 adopt optical waveguide structures and include two optical engines, namely the optical engine 400 on the right temple 22 and the optical engine 500 on the left temple 21. The optical engine 400 on the right temple 22 and the optical engine 500 on the left temple 21 are respectively used to project light into the coupling grating in the right lens 26 and the coupling grating in the left lens 25.

[0292] It is understandable that the display angle adjustment component and the optical engine angle adjustment scheme in the monocular AR glasses 10 can also be used in the binocular AR glasses 20. That is, the scheme for adjusting the angle of the optical engine 400 on the right temple 22 can also be used for adjusting the angle of the optical engine 500 on the left temple 21. For example, the display angle adjustment component used to adjust the position of the optical engine 400 on the left temple 21 is the same as that described in Figure 4- Figure 11 The display angle adjustment component used to adjust the position of the optical mechanism 400 on the right temple 22 can have the same structure, for example, it can be the scheme described above using the third fixed arm 291 and the rotating structure 292. In some embodiments, the display angle adjustment component used to adjust the position of the optical mechanism 400 on the left temple 21 and the display angle adjustment component used to adjust the position of the optical mechanism 400 on the right temple 22 can have different structures, and can be any of the display angle adjustment components mentioned above. For example, the left temple 21 can use the scheme described above using the third fixed arm 291 and the rotating structure 292, and the right temple 22 can use the scheme described above using a button to adjust the angle of the optical mechanism 400, etc. The specific structure of the binocular display AR glasses 20 will not be described in detail here.

[0293] The above embodiments all disclose AR glasses that adjust the position of the virtual image by adjusting the position of the optical engine and changing the angle of the emitted light from the optical engine relative to the optical waveguide structure. However, based on Figures 3a to 3e ,as well as Figures 13-14 As is known from optical principles, changing the position of a lens relative to the optical engine can alter the angle of the emitted light rays from the optical engine relative to the lens, thereby changing the position of the virtual image. Therefore, in other embodiments of this application, the position of the virtual image can also be adjusted by adjusting the position of the lens. For example, the position of the virtual image in the Y-axis direction can be changed by adjusting the height of the lens; the position in the X-axis direction can be changed by adjusting the horizontal spacing between the left and right lenses; or the position in various directions can be adjusted by adjusting the angle of the lens relative to the line connecting the lens and the human eye.

[0294] For example, for Figure 3a In the scenario shown, the position of the optical engine 400 can remain fixed. Instead, rotating the right mirror by 'a' degrees around the y-axis in the negative x-axis direction, as shown in the diagram, will also cause the emitted light from the optical engine 400 to deflect by 'a' degrees, thus creating a... Figure 3b The position of the virtual image 300 can be changed as shown. For example, the right lens frame 24 and the left lens frame 23 can be configured to be relatively flexible to adjust the angle of the lens relative to the optical engine, thereby adjusting the position of the virtual image 300.

[0295] One implementation scheme for enabling the right frame 24 and the left frame 23 to be relatively bent is to set the intermediate frame between the right frame 24 and the left frame 23 as a bendable structure, or to set the connection between the left frame 24 and / or the right frame 25 and the intermediate frame as a rotatable structure.

[0296] Furthermore, it is understood that in other embodiments of this application, the position of the virtual image can also be adjusted by adjusting the tilt angle of the entire AR glasses lens relative to the human eye in the y direction.

[0297] For example, regarding the aforementioned Figure 4a or Figure 11 The AR glasses shown can also be set... Figure 18 The nose pads and adjustment components shown are used to change the height of the lenses in the AR glasses. That is, while the temples remain in contact with the ears, the lenses are effectively rotated around their contact positions along the X-axis, thus changing the position of the virtual image in the Y-axis direction. Specifically, the frame may include a left frame 23, a right frame 24, and an intermediate frame between them. The nose pad 5 is movably connected to the left frame 23 and the right frame 24 of the frame via a second adjustment component. This structural design allows the position of the nose pad 5 to be adjusted via the second adjustment component, thereby moving the nose pad 5 in the Y-axis direction to change the position of the virtual image in the Y-axis direction.

[0298] The second adjustment component may include a stud 51 on the nose pad and a threaded hole on the intermediate frame. The nose pad 5 can be directly connected to the threaded hole on the intermediate frame via a threaded connection. To adjust the height of the nose pad 5, simply pull the nose pad 5 out of the intermediate frame or insert it to the appropriate depth along the Y-axis.

[0299] It is understandable that, since the position of the nose pad 5 on the user's nose bridge is generally fixed, when the stud 5 on the nose pad 5 is gradually inserted into the threaded hole on the middle frame, the left frame 23 and the right frame 24 will slide down the nose bridge, causing the left lens 25 and the right lens 26 to slide down the nose bridge as well. This results in the final virtual image position moving in the negative Y-axis direction. When the stud 5 on the nose pad 5 is gradually pulled out of the threaded hole on the middle frame, the left frame 23 and the right frame 24 will move upward along the nose bridge, causing the left lens 25 and the right lens 26 to move upward along the nose bridge as well. This results in the final virtual image position moving in the positive Y-axis direction. Ultimately, this achieves a change in the virtual image position in the Y-axis direction.

[0300] In addition, the positions of the optical engine and the lens can be changed simultaneously to adjust the position of the virtual image.

[0301] The following is a brief description of a method for automatically adjusting the position of the optical engine relative to the lenses in binocular AR glasses based on the user's gaze point and depth of gaze. This method may include:

[0302] 1) Obtain images of the user's eyes while wearing AR glasses.

[0303] For binocular display AR glasses, in some embodiments, cameras can be placed in front of both the left and right lenses to capture images of the user's left and right eyes in real time, respectively; wherein, the position of the cameras can be directly facing the user's eyeballs, which is conducive to capturing clear images of the user's eyes.

[0304] 2) Obtain the user's gaze position and gaze depth based on the user's binocular images.

[0305] In this embodiment, the AR glasses can process the real-time captured images of the user's left and right eyes using image processing or image recognition algorithms to determine the position of the user's gaze point and the depth of gaze.

[0306] 3) Adjust the position of the virtual image in the AR glasses based on the user's gaze point position and / or gaze point depth.

[0307] The AR glasses in this embodiment can adjust the angles of the optical engine on the left temple and the two optical engines on the right temple in real time according to the real-time changes in the user's gaze point position and gaze depth, so as to adjust the virtual image position to the human eye's gaze point position and match the virtual image distance with the human eye's gaze depth.

[0308] In some embodiments, the camera can send images of the user's eyes to the processor of the AR glasses. The processor of the AR glasses can process the user's left and right eye images using image processing algorithms or image recognition algorithms, determine the fixation point position and fixation depth of the user's eyes, and make two optical engine angle adjustments so that the virtual image position is adjusted to the fixation point position of the human eye, and the virtual image distance matches the fixation depth of the human eye.

[0309] In some embodiments, the processor may also be equipped with an algorithm model related to determining the position of the user's gaze point. The algorithm model can determine the position of the user's gaze point through the user's binocular images and make two optical-mechanical angle adjustments so that the position of the virtual image is adjusted to the position of the human eye's gaze point, and the distance of the virtual image matches the depth of the human eye's gaze.

[0310] The processor-controlled optical engine angle adjustment scheme, as described above, can adjust the angle of the optical engine based on the angle adjustment component mentioned in the embodiments of this application. For example, the processor can adjust the position of the two optical engines relative to the lens by controlling the movement of the telescopic structure.

[0311] In some embodiments, the scheme of processor controlling the adjustment of the two optical engine angles can also be replaced by adjusting the position of the optical engine relative to the lens by adjusting the position of the lens.

[0312] In some embodiments, the processor-controlled adjustment of the two optical engine angles can also involve directly controlling the rotation of the optical engine through some algorithm program, or adjusting the emission direction of light in the optical engine without adjusting the position of the optical engine. Other embodiments are also possible.

[0313] In some of these embodiments, the scheme of determining the position of the virtual image by using the above-described method of analyzing the human eye's gaze point can also be used in AR glasses with other lens structures, such as AR glasses with a reflective mirror structure, or in other head-mounted display devices, and is not limited to AR glasses.

[0314] It is understood that the AR glasses in the above embodiments are merely exemplary. The technical solutions of this application are applicable to various forms of near-eye display devices that use optical waveguides as lenses or imaging media, and are not limited here.

[0315] Furthermore, it is understood that in this embodiment, because the angle of the optical engine can change, it is necessary to ensure that the light emitted by the optical engine can be incident on the coupling grating. Figure 19 The diagrams show the positions 001 of the light rays incident on the coupling grating 102 when the optical engine is perpendicular to the coupling grating 102, when the optical engine is rotated by a set angle around the Y-axis and X-axis from an angle perpendicular to the coupling grating 102, and when the optical engine is rotated by a set angle around the Y-axis and X-axis from an angle perpendicular to the coupling grating 102. In this embodiment, the size of the coupling grating needs to be sufficient to ensure that the light rays emitted by the optical engine at any rotatable angle can be incident on the coupling grating.

[0316] For example, if the optical engine can rotate within a circumferential range of 0-30 degrees, then when setting the coupling grating on the lens, the size of the coupling grating needs to be such that all the light emitted by the optical engine 400 when rotating 0-30 degrees can be incident on the coupling grating.

[0317] In addition, in this embodiment of the application, if it is to be possible for light rays entering the diffraction waveguide at different angles of the optical engine to be coupled out from the coupling grating, then the field of view of the diffraction waveguide of the lens is greater than or equal to the sum of the field of view of the optical engine and the maximum rotatable angle of the optical engine; for example, if the field of view of the optical engine is 20° and the maximum rotatable angle of the optical engine 400 is 10°, then the field of view of the waveguide structure should be greater than or equal to 30°.

[0318] In this embodiment, the optical engine and display angle adjustment components can be enclosed inside the temple, exposed outside the temple, or partially exposed. The specific configuration can be adjusted according to the actual design of the AR glasses.

[0319] In summary, the AR glasses with adjustable relative positions of the optical engine and the lens provided in this application can change the virtual image position or virtual image distance by changing the incident angle of the optical engine incident on the coupling grating on the lens, thereby meeting the user's needs for different virtual image positions and virtual image distances.

[0320] This application embodiment also provides an imaging control method for AR glasses, wherein the method can be executed by the processor of the AR glasses, and the method includes:

[0321] 1) Obtain an image of the user's eyes while wearing AR glasses. The image of the user's eyes may include an image of one of the user's eyes or an image of both of the user's eyes.

[0322] It is understood that in this embodiment of the application, the user's eye image can be captured in real time by a camera. For monocular display AR glasses, there can be one camera used to capture an image of one of the user's eyes in real time. For binocular display AR glasses, there can be two cameras used to capture images of both of the user's eyes in real time.

[0323] 2) Obtain at least one of the user's gaze point position or gaze point depth based on the user's eye image.

[0324] In this embodiment, the AR glasses can process the real-time captured eye images of the user using image processing algorithms or image recognition algorithms to determine the user's gaze point position and / or gaze depth.

[0325] 3) Adjust the position of the virtual image in the AR glasses based on the user's gaze point position and / or gaze point depth.

[0326] In this embodiment, the AR glasses can adjust the optical engine angle on the temples of the AR glasses according to the real-time changes in the user's gaze point position and gaze depth, so as to adjust the virtual image position to the human eye's gaze point position and match the virtual image distance with the human eye's gaze depth.

[0327] The following is a further description of one hardware structure of the AR glasses mentioned in this application.

[0328] like Figure 20 As shown, the AR glasses 10 may include a processor 110, a power module 140, a memory 180, a wireless communication module 120, a sensor module 190, an audio module 150, a camera 170, an interface module 160, buttons 101, and an optical engine 400, etc.

[0329] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the AR glasses 10. In other embodiments of this application, the AR glasses 10 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0330] Processor 110 may include one or more processing units, such as processing modules or circuits of a central processing unit (CPU), graphics processing unit (GPU), digital signal processor (DSP), microprocessor (MCU), AI (Artificial Intelligence) processor, or field programmable gate array (FPGA). Different processing units may be independent devices or integrated into one or more processors. Processor 110 may include storage units for storing instructions and data. In some embodiments, the storage unit in processor 110 is a cache memory 180.

[0331] In this embodiment, the processor 110 can be used to control the display angle adjustment component to perform corresponding movements. For example, the processor can recognize voice commands and then control the electric motor to drive the inner sleeve of the telescopic structure to move accordingly along the Z-axis to adjust the optical engine position.

[0332] The power module 140 may include a power supply, a power management component, etc. The power supply may be a battery. The power management component manages the charging of the power supply and the power supply to other modules. In some embodiments, the power management component includes a charging management module and a power management module. The charging management module receives charging input from a charger; the power management module connects to the power supply and the processor 110. The power management module receives input from the power supply and / or the charging management module to supply power to the processor 110, the optical engine 400, the camera 170, and the wireless communication module 120, etc.

[0333] The wireless communication module 120 may include an antenna, which enables the transmission and reception of electromagnetic waves. The wireless communication module 120 can provide wireless communication solutions for use in the AR glasses 10, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), and infrared (IR) technologies. The AR glasses 10 can communicate with networks and other devices via wireless communication technologies.

[0334] The Optical Engine 400 can be used to project virtual images onto the lenses of AR glasses.

[0335] The sensor module 190 may include a position sensor, a proximity sensor, a pressure sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer, a distance sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc.

[0336] In this embodiment of the application, the position sensor can be used to obtain information on the positional changes of the temples in AR glasses.

[0337] The audio module 150 is used to convert digital audio information into analog audio signals for output, or to convert analog audio input into digital audio signals. The audio module 150 can also be used for encoding and decoding audio signals. In some embodiments, the audio module 150 may be located in the processor 110, or some functional modules of the audio module 150 may be located in the processor 110. In some embodiments, the audio module 150 may include a speaker, a handset, a microphone, and a headphone jack.

[0338] The microphone can be used to receive the user's voice commands.

[0339] In this embodiment, the camera 170 is used to capture still images or videos. An object generates an optical image through the lens and projects it onto a photosensitive element. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to an ISP (Image Signal Processing) to convert it into a digital image signal. The AR glasses 10 can realize the shooting function through the ISP, camera 170, video codec, GPU (Graphics Processing Unit), display screen 102, and application processor.

[0340] Interface module 160 includes a universal serial bus (USB) interface. The external memory card communicates with processor 110 via the external memory interface to perform data storage. The USB interface is used for communication between AR glasses 10 and other electronic devices.

[0341] In some embodiments, the AR glasses 10 further includes a button 1001. The button 1001 may be one of the aforementioned first, second, third, and fourth buttons, etc.

[0342] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0343] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An optical device, characterized by, The system includes an optical display module, which comprises a first image source component and a first optical waveguide structure; and, When the first image source component is at a first position, the light rays incident on the first optical waveguide structure corresponding to the first image source component form a first angle with the first optical waveguide structure, and the optical display module has a first virtual image position. When the first image source component has a second position, the light rays incident on the first optical waveguide structure corresponding to the first image source component have a second angle with the first optical waveguide structure, and the optical display module has a second virtual image position. The optical device also includes a first angle adjustment component; The first angle adjustment component includes a first fixed rod, a first rotating structure, a first driving structure, and at least one first telescopic structure; The first end of the first fixing rod is fixed to the first temple of the optical device, and the first image source component is disposed at the second end of the first fixing rod through the first rotating structure; One end of each of the at least one first telescopic structures is connected to a different position of the first image source component, and the other end of each of the at least one first telescopic structures is connected to the first driving structure. In the case where the at least one first telescopic structure includes two first telescopic structures, the connection position of one of the two first telescopic structures to the first image source component is a position where the center position of the bottom of the first image source component is offset by a preset distance along the negative direction of the X-axis, and the connection position of one end of the other first telescopic structure to the first image source component is a position where the center position of the bottom of the first image source component is offset by a preset distance along the positive direction of the Y-axis. The first driving structure can drive the first telescopic structure to extend and shorten, thereby causing the first image source component to rotate in a corresponding direction around the first fixed rod; The first telescopic structure includes a first sleeve and a second sleeve. One end of the first sleeve is connected to the first image source component, and the other end of the first sleeve is fitted inside or outside the second sleeve. The other end of the first sleeve is also connected to the driving structure. The first image source component has a number of first connecting posts corresponding to the number of the first telescopic structure on its side. Each first telescopic structure has a first connecting ring at one end of its first sleeve. The first connecting ring is sleeved on the outside of the first connecting post, and the inner diameter of the first connecting ring is larger than the outer diameter of the first connecting post. The optical device further includes a first button and a second button. The first button is used to control the extension of the first telescopic structure, and the second button is used to control the shortening of the first telescopic structure. The gap between the first connecting ring and the first connecting post is the extension dimension of the first telescopic structure when the first button is clicked once, or the shortening dimension of the first telescopic structure when the second button is clicked once.

2. The optical device of claim 1, wherein, When the first image source component has a first position relative to the first optical waveguide structure, the optical display module has the first virtual image position, and... When the first image source component has a second position relative to the first optical waveguide structure, the optical display module has the second virtual image position.

3. The optical device of claim 2, wherein, Also includes: The display angle adjustment component is used to adjust the relative position of the first image source component with respect to the first optical waveguide structure.

4. The optical device according to claim 3, characterized in that, The display angle adjustment component is connected to the first image source component, and the display angle adjustment component adjusts the relative position of the first image source component with respect to the first optical waveguide structure by moving the first image source component.

5. The optical device of claim 3, wherein, Also includes: A waveguide angle adjustment component is used to adjust the relative position of the first image source component with respect to the first optical waveguide structure by moving the first optical waveguide structure.

6. The optical device of claim 2, wherein, It also includes a second image source component and a second optical waveguide structure; and, When the first image source component has a first position relative to the first optical waveguide structure, and the second image source component has a third position relative to the second optical waveguide structure, the virtual image formed by the light rays incident from the first image source component onto the first optical waveguide structure and the light rays incident from the second image source component onto the second optical waveguide structure has the first virtual image position. When the first image source component has a second position relative to the first optical waveguide structure and the second image source component has a fourth position relative to the second optical waveguide structure, the virtual image formed by the light rays incident from the first image source component to the first optical waveguide structure and the light rays incident from the second image source component to the second optical waveguide structure has the second virtual image position.

7. The optical device according to claim 1, characterized in that, The optical device is AR glasses.

8. The optical device of claim 7, wherein, The AR glasses also include a first lens and a second lens in the frame; The eyeglass frame includes a first frame, a second frame, a first temple, and a second temple; The first lens includes the first optical waveguide structure.

9. The optical device of claim 8, wherein, The first angle adjustment component connects the frame and the first image source component, and is used to adjust the first image source component from the first position to the second position.

10. The optical device of claim 9, wherein, The AR glasses also include a second image source component, a second optical waveguide structure, and a second angle adjustment component; The second lens includes the second optical waveguide structure, and the second angle adjustment component connects the frame and the second image source component, and is used to adjust the second image source component from the third position to the fourth position.

11. The optical device of claim 10, wherein, When the first image source component has the first position and the second image source component has the third position, the virtual image formed by the light rays incident from the first image source component onto the first optical waveguide structure and the light rays incident from the second image source component onto the second optical waveguide structure has the first virtual image position, and... When the first image source component has the second position and the second image source component has the fourth position, the virtual image formed by the light rays incident from the first image source component to the first optical waveguide structure and the light rays incident from the second image source component to the second optical waveguide structure has the second virtual image position.

12. The optical device of claim 10, wherein, The second angle adjustment component is disposed on the second temple or the second frame.

13. The optical device of claim 12, wherein, The second angle adjustment assembly includes a second fixed rod and a second rotating structure, wherein, The first end of the second fixing rod is fixed to the second temple or the second frame, and the second image source assembly is disposed at the second end of the second fixing rod through the second rotating structure.

14. The optical device of claim 13, wherein, The first rotating structure or the second rotating structure includes a universal joint.

15. The optical device according to claim 12, characterized in that, The second angle adjustment assembly includes a second fixed rod, a second rotating structure, a second driving structure, and at least one second telescopic structure; The second end of the second fixing rod is fixed to the second temple or the second frame, and the second image source assembly is disposed at the second end of the second fixing rod through the second rotating structure; One end of each of the at least one second telescopic structures is connected to a different position of the second image source component, and the other end of each of the at least one second telescopic structures is connected to the second driving structure. The second driving structure can drive the second telescopic structure to extend and shorten, thereby causing the second image source component to rotate in the corresponding direction around the second fixed rod.

16. The optical device of claim 15, wherein, The first telescopic structure includes a first sleeve and a second sleeve. One end of the first sleeve is connected to the first image source component, and the other end of the first sleeve is fitted inside or outside the second sleeve. The other end of the first sleeve is connected to the driving structure. Alternatively, the second telescopic structure includes a third sleeve and a fourth sleeve, one end of the third sleeve being connected to the first image source component, the other end of the fourth sleeve being fitted inside or outside the third sleeve, and the other end of the third sleeve being connected to the second driving structure.

17. The optical device of claim 16, wherein, The second image source component has a number of second connecting posts corresponding to the number of the second telescopic joint on its side, and each end of the third sleeve of the second telescopic structure has a second connecting ring; the second connecting ring is sleeved on the outside of the second connecting post.

18. The optical device of claim 17, wherein, The inner diameter of the second connecting ring is equal to the outer diameter of the second connecting post; or, the inner diameter of the second connecting ring is greater than the outer diameter of the second connecting post.

19. The optical device according to claim 17 or 18, characterized in that The end of the first connecting post that is not connected to the first image source component is provided with a first stop; Alternatively, the end of the second connecting post that is not connected to the second image source component may be provided with a second stop.

20. The optical device of claim 17, wherein, One end of the first sleeve of each of the first telescopic structures is connected to the bottom surface of the first image source component, wherein the bottom surface of the first image source component is opposite to the light-emitting surface of the first image source component; One end of the third sleeve of each of the second telescopic structures is connected to the bottom surface of the second image source component, wherein the bottom surface of the second image source component is opposite to the light-emitting surface of the second image source component.

21. The optical device according to any one of claims 10-20, characterized in that, It also includes processors and sensors; The sensing device is configured to send the first position change information to the controller when it detects that the position of the first image source component relative to the first optical waveguide structure deviates from the first preset position; and to send the second position change information to the controller when it detects that the position of the second image source component relative to the second optical waveguide structure deviates from the second preset position. The processor is configured to control the position of the first image source component relative to the first optical waveguide structure to return to the first set position based on the first position information. Based on the second position information, the position of the second image source component relative to the second optical waveguide structure is controlled to return to the second set position.

22. The optical device according to any of claims 10-20, characterized by It also includes the processor; The processor is used for: Obtain the user's voice commands; The position of the first image source component relative to the first optical waveguide structure is controlled according to the voice command to be the set position corresponding to the voice command; and / or the position of the second image source component relative to the second optical waveguide structure is controlled to be the set position corresponding to the voice command.

23. The optical device according to any of claims 10-20, characterized by Also includes: Processor; the processor is used for: Obtain the user's eye image; Determine the user's gaze point location based on the user's eye image; The relative positions of the first image source component and / or the second image source component and the second optical waveguide structure are adjusted according to the user's gaze point position and gaze depth, so that the virtual image position of the optical display module is located at the user's gaze point position.

24. The optical device according to any of claims 8-20, characterized by It also includes nose pads, height adjustment components, and a central frame; The intermediate frame is located between the first frame and the second frame; The two ends of the nose pad are respectively connected to the first frame and the second frame; The nose pad can be moved away from or closer to the intermediate frame via the height adjustment component, and when the nose pad has a first height relative to the intermediate frame, the first image source component has the first position, and when the nose pad has a second height relative to the intermediate frame, the first image source component has the second position.

25. The optical device of claim 24, wherein, The height adjustment assembly includes a stud, which is fixed to the nose pad; The intermediate frame is provided with a threaded hole that matches the stud.

Images