Near-to-eye display device

Abstract

The utility model provides a near-to-eye display device. The near-to-eye display device comprises a frame body which is provided with a near-to-eye side and an environment side; the near-to-eye display module is arranged on the frame body and is used for generating a digital image; the second optical element is arranged on the light emitting side of the near-to-eye display module and faces the near-to-eye side; the second optical element comprises a first active lens and a first conductive piece which is electrically coupled with the first active lens; the third optical element is connected with the frame body and faces the near-eye side; the third optical element and the second optical element are arranged at intervals; the third optical element comprises a second active lens and a second conductive piece which is electrically coupled with the second active lens; the processor is electrically connected with the first conductive part, the second conductive part and the near-to-eye display module respectively; the processor is configured to control the curvature change of the first active lens through the first conductive piece, and clearly project a digital image without projecting an environment image for a user; the processor is further configured to control the curvature change of the second active lens through the second conductive piece, an environment image is clearly projected for the user without projecting a digital image, and the zooming efficiency of the user is effectively improved.

Description

Technical Field

[0001] This application relates to the field of smart wearable device technology, specifically to a near-eye display device. Background Technology

[0002] Smart wearable devices can achieve functions such as health monitoring, motion tracking, information reminders, voice assistants, navigation, and playback control. With the development of technologies such as AR (Augmented Reality), VR (Virtual Reality), and MR (Mixed Reality), wearable devices such as head-mounted displays can bring users a more immersive digital experience.

[0003] Because each user's vision is different, different lenses need to be fitted for different users based on their different refractive errors. In the field of smart head-mounted devices such as AR or VR, in order to meet the needs of people with visual impairments, it is generally necessary to customize lenses with different refractive errors for each user, and then assemble them into the smart head-mounted device through magnetic or snap-fit ​​methods. However, this solution can only meet the needs of specific users. When a user's vision changes or when it is necessary to accommodate multiple users with different vision, this method of adjusting the focus is inefficient and not easy to achieve compatibility. Summary of the Invention

[0004] In view of this, this application provides a near-eye display device to solve at least one of the problems of low zoom efficiency and low compatibility of existing near-eye display devices.

[0005] To address the aforementioned technical problems, this application provides a near-eye display device, comprising:

[0006] The frame has a near-eye side and an environment side;

[0007] Near-eye display module, located within the frame, is used to generate digital images;

[0008] The second optical element is disposed on the light-emitting side of the near-eye display module and faces the near-eye side; the second optical element includes a first active lens and a first conductive element electrically coupled to each other;

[0009] A third optical element is connected to the frame and faces the near-eye side; the third optical element and the second optical element are spaced apart; the third optical element includes a second active lens and a second conductive element electrically coupled to each other;

[0010] The processor is electrically connected to the first conductive element, the second conductive element, and the near-eye display module, respectively;

[0011] The processor is configured to control the curvature change of the first active lens through the first conductive element and to project a clear digital image to the user without projecting an environmental image.

[0012] The processor is also configured to control the curvature change of the second active lens via a second conductive element, and to project a clear image of the environment for the user without projecting a digital image.

[0013] The beneficial effects of this application are as follows: The near-eye display device provided in this application embodiment has a near-eye display module disposed in a frame, a second optical element 70 disposed on the light-emitting side of the near-eye display module and facing the near-eye side, and a third optical element facing the near-eye side. The second optical element includes a first active lens and a first conductive element electrically coupled to each other. The third optical element and the second optical element are spaced apart. The third optical element includes a second active lens and a second conductive element electrically coupled to each other. The processor is electrically connected to the first conductive element, the second conductive element, and the near-eye display module. The processor is configured to control the curvature change of the first active lens through the first conductive element and clearly project a digital image to the user without projecting an environmental image, thereby achieving zooming and clear projection of the digital image within the user's field of vision. The processor is also configured to control the curvature change of the second active lens through the second conductive element and clearly project an environmental image to the user without projecting a digital image, thereby achieving zooming and clear projection of the environmental image within the user's field of vision. This application can achieve zooming of both the digital image and the environmental image presented to the user's field of vision, meeting the wearing needs of users with different vision levels. The electronically controlled zooming by the processor effectively improves the user's zooming efficiency.

[0014] These and other features and their advantages will become clearer from the following detailed description taken in conjunction with the accompanying drawings and embodiments. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the near-eye display device provided in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of a disassembled structure of the near-eye display device provided in an embodiment of this application;

[0018] Figure 3 yes Figure 2 A magnified schematic diagram of the central region P2;

[0019] Figure 4 This is another exploded structural diagram of the near-eye display device provided in the embodiments of this application;

[0020] Figure 5 yes Figure 4 A magnified schematic diagram of the central region P3;

[0021] Figure 6 This is a schematic diagram of the near-eye display device provided in the embodiments of this application regarding the first limiting part and the rotating shaft;

[0022] Figure 7 This is a schematic diagram of the near-eye display device provided in the embodiments of this application regarding the rotation axis;

[0023] Figure 8 This is another partially disassembled structural diagram of the near-eye display device provided in the embodiments of this application;

[0024] Figure 9 yes Figure 8 A magnified schematic diagram of the central region P1;

[0025] Figure 10 This is a schematic diagram of the near-eye display module provided in the embodiments of this application;

[0026] Figure 11 This is another structural schematic diagram of the near-eye display module provided in the embodiments of this application;

[0027] Figure 12 This is an exploded view of the near-eye display module provided in an embodiment of this application;

[0028] Figure 13 This is another structural schematic diagram of the near-eye display module provided in the embodiments of this application;

[0029] Figure 14 This is a schematic diagram of the structure of the bushing and the first sliding part of the near-eye display module provided in the embodiments of this application;

[0030] Figure 15 This is a schematic diagram of the structure of the optical module of the near-eye display module provided in the embodiments of this application;

[0031] Figure 16 This is an example block diagram of the architecture and network environment of the near-eye display device provided in the embodiments of this application;

[0032] Figure 17 This is an example block diagram of the electrical connection system between the second and third optical elements according to the first embodiment provided in this application.

[0033] Figure 18 This is an example block diagram of the electrical connection system between the second optical element and the third optical element, provided in the second embodiment of this application.

[0034] Figure 19 This is a schematic diagram of the orthographic projection structure of the second and third optical elements provided in the embodiments of this application;

[0035] Figure 20 This is a schematic diagram of the first structure of the second and third optical elements in the deformation state provided in the embodiments of this application: A is the first curvature state, and B is the second curvature state;

[0036] Figure 21 This is a schematic diagram of the second structure of the deformation states of the second and third optical elements provided in the embodiments of this application: A is the first curvature state, and B is the second curvature state;

[0037] Figure 22 This is a schematic diagram of the third structure of the second and third optical elements in the deformation state provided in the embodiments of this application: A is the first curvature state, and B is the second curvature state. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] The terms "first" and "second" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Regarding the description of the drawings, the same or similar reference numerals may be used to label the same or similar parts.

[0041] In some applications, such as waveguide-based smart glasses, the battery and circuit board are often integrated on the same temple. In order to balance the weight of the left and right temples, an additional counterweight is often needed on the other temple, which makes the overall weight of the glasses heavy and not conducive to long-term wear. On the other hand, during long-term use, the constant rotation of the temples in existing smart glasses can easily lead to exposed or damaged electrical wires.

[0042] In some application scenarios, different users have visual impairments such as different refractive errors, so it is necessary to provide users with the expected visual correction. Especially in fields such as AR, users with visual impairments still need to see digital images or environmental images clearly. Existing technologies include, for example, having eyewear factories or original manufacturers directly customize lenses to meet the specific refractive error and curvature of different users. Such customization methods are costly to produce, are not easy to achieve wear compatibility between users, and the customized lens parameters are for single correction, which is not easy to further adjust to changes in the user's vision over time.

[0043] See also Figure 1-21 This application proposes a near-eye display device 200, which includes a frame 10 and a first cavity 101. The near-eye display device of this application can be a smart device such as smart glasses, AR (Augmented Reality), VR (Virtual Reality), or MR (Mixed Reality).

[0044] The near-eye display module 100 is disposed within the frame 10. The near-eye display module 100 may be at least partially housed within the first cavity 101 and partially protrude relative to the first cavity 101. The near-eye display module 100 may be configured to allow movement relative to the frame 10, such as sliding or rotating. In other embodiments, the near-eye display module 100 may also be fixed to the frame 10. The frame 10 may include a near-eye side (human eye side) 102 and a world side (environment side) 103 opposite to the near-eye side 102. The near-eye display module 100 is used to generate light to form a digital image that is projected onto the near-eye side 102. Digital content can be projected onto the user's eye on the near-eye side 102. The near-eye display module 100 may employ binocular parallax, integrated imaging, holographic technology, or retinal imaging technology, etc., to project digital content onto the human eye.

[0045] The second optical element 70 is disposed on the light-emitting side of the near-eye display module 100 and faces the near-eye side 102; the second optical element 70 includes a first active lens 710 and a first conductive element 720 electrically coupled to each other.

[0046] In some embodiments, the near-eye display device 200 may further include a third optical element 105 disposed on the frame 10, the third optical element 105 being oriented towards the near-eye side 102. In some embodiments, the frame 10 may further include an upper frame 13 and a lower frame 14, the third optical element 105 being mounted between the upper frame 13 and the lower frame 14. In some embodiments, the third optical element 105 may be detachably connected to the frame 10, allowing the user to change lenses for different vision corrections; alternatively, the third optical element 105 may be fixedly connected to the frame 101 and not be detachable by the user. The near-eye display module 10 may be a single module, or two or more modules. In some embodiments, the third optical element 105 can be a plano lens, a sunglasses lens, or a protective lens. In other embodiments, the third optical element 105 can be a lens with vision correction, such as a lens for correcting specific eyes or visual impairments like myopia, hyperopia, or color blindness. The third optical element 105 can be spherical, aspherical, toroidal, cylindrical, single-vision, multifocal, progressive, and / or adjustable. In some embodiments, the projected area of ​​the near-eye display module 10 does not overlap with the third optical element 105 in the direction from the near-eye side 102 to the far-eye side 103, thereby reducing the interference of the near-eye display module 10 on the normal visual field of the third optical element 105. In other embodiments, the projected area of ​​the near-eye display module 10 partially overlaps with the third optical element 105 in the direction from the near-eye side 102 to the world side 103, or the near-eye display module 10 can also be configured to move to the area of ​​the third optical element 105, that is, allow the near-eye display module 10 to be adjusted at a predetermined or arbitrary position of the third optical element 105.

[0047] In some embodiments, the second optical element 70 may include a first active lens 710 and a first conductive element 720 electrically coupled to each other, and the third optical element 105 includes a second active lens 106 and a second conductive element 107 electrically coupled to each other; the aforementioned electrical coupling can be understood as the two being electrically connected through current, voltage, etc. The first active lens 710 and the second active lens 106 may include electrochromic materials, such as electroactive polymers, liquid crystal materials, ceramic electroactive materials, electroactive thin film materials, piezoelectric polymers, etc., which can change the shape of the active lens when the input electric field reaches a preset value. The first conductive element 720 and the second conductive element 107 may be metal wires, coils, metal contacts, electrical terminals, printed wires, or flexible wires, etc.

[0048] The processor 2301 is electrically connected to the first conductive element 720, the second conductive element 107 and the near-eye display module 100 respectively; wherein the number of processors 2301 can be configured to be one or more.

[0049] The processor 2301 is configured to control the curvature change of the first active lens 710 via the first conductive element 720, allowing the first active lens 710 to clearly project digital images to the user without projecting environmental images. The processor 2301 is also configured to control the curvature change of the second active lens 106 via the second conductive element 107, allowing the second active lens 106 to clearly project environmental images to the user without projecting digital images. It can be understood that the digital image is formed by the near-eye display module 100, allowing the user to see digital content, which can be generated by a computer, mobile phone, application, or server. The environmental image is formed by the second active lens 106 extending from the environmental side 103 to the near-eye side 102, allowing the user to see external environmental content (i.e., real-world content). The curvature change can include spherical, aspherical, or freeform surfaces.

[0050] Since different users have different refractive powers, users need to adjust the refractive power (focal length) of the corresponding active lens to see both the digital image and the ambient image clearly at the same time. In this application, the first active lens 710 and the second active lens 106 are set apart and located on different optical paths. Therefore, the optical paths of the digital image and the ambient image are different, for example, when a nearsighted person wears the near-eye display device 200. The processor 2301 can be triggered by interactive controls such as touch, swipe, and press via wristbands, watches, wearable devices, computer terminals, rings, or mobile terminals. The trigger signal is then distributed to the first conductive element 720 to control the curvature change of the first active lens 710. Users can adjust the curvature according to their visual needs, for example, by inputting different voltages or currents at the physical layer of the electronic components, thereby allowing the digital image of the near-eye display module 100 to be clearly projected onto the user's eye (retina). When the user needs to see the external environment clearly, the processor 2301 is triggered by the above-mentioned interactive control. Different signals are distributed to the second conductive element 107 to control the curvature change of the second active lens 106, allowing the user to adjust to see the environmental content clearly according to their needs.

[0051] In some embodiments, in conjunction with reference to Figure 8 , 12 In configurations 19 and 19, the size of the first active lens 710 is larger than that of the first optical element 40, thereby enabling it to fully receive light from the first optical element 40. Light from the microdisplay assembly 30 enters from the first end of the first optical element 40 and exits from the second end of the first optical element 40, passing through the first active lens 710 to project a digital image onto the near-eye side 102. In the projection area of ​​the frame 10, the ambient light path from the ambient side 103 to the near-eye side 102 is blocked by the frame 10 and does not enter the first active lens 710, while the light path of the microdisplay assembly 30 is not blocked by the frame 10. The frame 10 is at least partially disposed along the outer periphery of the second active lens 106, and the ambient light path from the ambient side 103 to the near-eye side 102 is not blocked by the frame 10, passing through the second active lens 106 and projecting an ambient image onto the near-eye side 102. The optical paths of the digital image and the environmental image are independent, thus effectively reducing the interference of the digital image on the environmental image. Compared with existing AR glasses such as optical waveguides, the solution of this application allows users to view digital images and environmental images independently. The near-eye display module 100 is embedded in the frame 10, which is beneficial for the implicit viewing of digital images.

[0052] In some embodiments, combined with Figure 5 , 8 and Figure 19For example, in the projection direction from the ambient side 103 to the near-eye side 102, the area of ​​the first active lens 710 is smaller than the area of ​​the second active lens 106, and the size of the first conductive element 720 is smaller than the size of the second conductive element 107; in the direction from the ambient side 103 to the near-eye side 102, the first active lens 710 is convex relative to the second active lens 106, that is, the first active lens 710 is closer to the near-eye side of the eye than the second active lens 106.

[0053] In some embodiments, combined with Figure 5 , 8 16 and 17, the near-eye display device 200 may further include an operation unit 2307. The operation unit 2307 may be a physical button, touch switch, or voice interaction unit located on the temple 220 or temple 260, or it may be an operation unit located on an external terminal device 300, which transmits wireless signals to the processor 2301 of the device 200 via a communication unit. The operation unit 2307 is electrically connected to the processor 2301, which is configured to receive operations from the operation unit 2307 and synchronously control the curvature changes of the first active lens 710 and the second active lens 106. This allows the first active lens 710 and the second active lens 106 to be synchronously controlled, with identical adjustment parameters such as diopter and refractive index. For example, they may be simultaneously adjusted to a synchronous curvature size, resulting in identical diopter in both lenses. This allows the user to efficiently operate the device and simultaneously clearly see both digital and environmental images. In some embodiments, the operation unit 2307 may also include a micro-digital chip with processing power less than that of the processor 2301.

[0054] In some embodiments, combined with Figure 5 , 816 and 18, the near-eye display device 200 also includes a first operation unit 2311 and a second operation unit 2312. The first operation unit 2311 and the second operation unit 2312 can be physical buttons, touch switches, or voice interaction units located on the temples 220 or 260, or they can be operation units located on external terminal devices 300, which transmit wireless signals to the processor 2301 of the device 200 via a communication unit. The first operation unit 2311 and the second operation unit 2312 are electrically connected to the processor 2301, respectively. The first operation unit 2311 controls the curvature change of the first active lens 710, and the second operation unit 2312 controls the curvature change of the second active lens 106; thereby allowing users to perform independent zoom adjustment based on digital images and environmental images, achieving more flexible independent zoom adjustment and reducing the probability of operational errors. In some embodiments, the curvature change range controlled by the first operation unit 2311 for the first active lens 710 is smaller than the curvature change range controlled by the second operation unit 2312 for the second active lens 106. It is understandable that, since the digital image is closer to the near eye side 102 and the environmental image is farther away, for some visually impaired users, the user can adjust the curvature less based on the closer digital image and adjust the curvature more based on the farther environmental image.

[0055] In some embodiments, Figure 19 In the diagram, A can be an example of the second optical element 70. Figure 19 B can be an example diagram of the third optical element 105, wherein the shapes of the first conductive element 720 and the second conductive element 107 may include annular coils, the perimeter of the first conductive element 720 is smaller than the perimeter of the second conductive element 107, the first active lens 710 and the second active lens 106 include electro-deformable lenses, the annular coil surrounds the electro-deformable lenses, and the processor 2301 can control the coil voltage to change the curvature of the electro-deformable lenses.

[0056] In some embodiments, in conjunction with reference to Figure 20The first active lens 710 and the second active lens 106 include: a substrate 711, which may be a flexible material; a deformation film 712, disposed opposite to the substrate 711; and a filling material 713 located between the substrate 711 and the deformation film 712, the filling material 713 including at least one of polymer, silicon compound, liquid lens, gel, gas, resin or polymer, the filling material 713 being used to fill the space between the substrate 711 and the deformation film 712 when the deformation film 712 undergoes deformation; the first conductive element 720 and the second conductive element 107 include an electric actuator 714, the electric actuator 714 and the deformation film 712 being electrically connected, the electric actuator 714 may be two and located on both sides of the deformation film 712, and the processor 2301 is configured to control the voltage applied to the deformation film 712 by the electric actuator 714 to change the bending shape of the deformation film 712. The substrate 711, the deformation film 712, the filler material 713, and the electric actuator 714 may be made of an optically transparent material. The "transparent" or "optically transparent" material or element may have a transmittance of at least about 70% in the visible light spectrum, such as about 70%, 80%, 90%, 95%, 97%, 98%, 99%, or 99.5%, including the range between any of the foregoing values, and a bulk haze of less than about 10%, such as about 0.5%, 1%, 2%, 4%, 6%, or 8%, including the range between any of the foregoing values. According to some embodiments, a “fully transparent” material or element may (a) have a transmittance (i.e., optical transmittance) of at least about 90% in the visible light spectrum, such as about 90%, 95%, 97%, 98%, 99%, or 99.5%, including any of the foregoing values; (b) have a volume haze of less than about 10%, such as about 0.5%, 1%, 2%, 4%, 6%, or 8%, including any of the foregoing values; (c) have a reflectance of less than about 30%, such as about 1%, 2%, 5%, 10%, 15%, 20%, or 25%, including any of the foregoing values; and (d) have an optical sharpness of at least 70%, such as about 70%, 80%, 90%, 95%, 97%, 98%, 99%, or 99.5%, including any of the foregoing values. Transparent and fully transparent materials will typically exhibit very low light absorption and minimal light scattering. Figure 20 In the first voltage, A can represent the first bending state of the deformed film 712. Figure 20In the second voltage, B can represent the second bending state of the deformation film 712, and the first and second bending states can be opposite. The first voltage can be zero, and the second voltage can be a non-zero voltage, such as 3.6V, 5V, 10V, etc. The processor 2301 can control different voltages to control the shape of the deformation film 712, thereby adjusting the angle and focal length of light from the microdisplay assembly 30 after it enters the first optical element 40 and passes through the first active lens 710, satisfying the adjustment of the digital image under different refractive powers of the user; at the same time, it can also adjust the angle and focal length of light from the ambient side 103 after it passes through the second active lens 106 and reaches the near-eye side 102, satisfying the adjustment of the ambient image under different refractive powers of the user.

[0057] In some embodiments, in conjunction with reference to Figure 21 To facilitate understanding of the curvature change principles of the second optical element 70 and the third optical element 105, and considering their similar principles, they are illustrated in the same figure. Labels 70, 710, 720, and 730 can be interpreted as one group, and labels 105, 106, 107, and 108 as another group. The second optical element 70 may include a first passive lens 730 adjacent to the first active lens 710, and a first conductive element 720 electrically connected to the first active lens 710. For example, the first conductive element 720 may be located on the side or end face of the first active lens 710. The third optical element 105 may include a second passive lens 108 adjacent to the second active lens 106, and a second conductive element 107 electrically connected to the second active lens 106. The second conductive element 107 may be located on the side or end face of the second active lens 106. The first passive lens 730 and the second passive lens 108 may include an optically transparent deformable layer or a polymer, such as polymethyl methacrylate. The first passive lens 730 and the second passive lens 108 may also contain gels, foams, liquids, gases, and polymers. The first active lens 710 and the second active lens 106 may include bidirectionally oriented piezoelectric films. (Reference) Figure 21 In case A, when no electric field is applied to the first active lens 710 and the second active lens 106, the second optical element 70 and the third optical element 105 can exhibit a first curvature state. When the processor applies voltages to the first active lens 710 and the second active lens 106 respectively through the first conductive element 720 and the second conductive element 107, in response to the applied voltage, reference... Figure 21In section B, the second optical element 70 and the third optical element 105 can deform, causing a change in curvature and exhibiting a second curvature state. In other embodiments, the first passive lens 730 and the second passive lens 108 can be omitted, and a first active lens 710 and a second active lens 106 can be used directly. In this case, the first active lens 710 and the second active lens 106 may include polymers, gels, or liquid crystal materials, which can be electro-induced by conductive components to undergo deformation. It should be understood that, viewed from the front projection area, for example... Figure 8 Or, in the orthographic projection area of ​​19, the size (outline) of the second optical element 70 may be smaller than the size (outline) of the third optical element 105, that is, the size of the first active lens 710 is smaller than the size of the second active lens 106, and the size of the first passive lens 730 is smaller than the size of the second passive lens 108. In some embodiments, see reference to Figure 22 To facilitate understanding of the curvature change principles of the second optical element 70 and the third optical element 105, and considering their similar principles, they are illustrated in the same figure. Labels 70, 710, 720, and 740 can be considered as one group, and labels 105, 106, 107, and 109 as another. The second optical element 70 may include a first metasurface structure 740 adjacent to the first active lens 710, and a first conductive element 720 electrically connected to the first active lens 710, for example, the first conductive element 720 being located on the side or end face of the first active lens 710. The third optical element 105 may include a second metasurface structure 109 adjacent to the second active lens 106, and a second conductive element 107 electrically connected to the second active lens 106, the second conductive element 107 being located on the side or end face of the second active lens 106. Metasurface structures 740 and 109 may include phase compensation structures. The phase compensation structures are formed using a dielectric material. According to some embodiments of this application, the phase compensation structure may include solid micro / nano structures such as cuboids, cylinders, and hemispheres, or hollow or partially hollow micro / nano structures with recesses or holes in the form of cuboids, cylinders, or hemispheres. The first active lens 710 and the second active lens 106 may include bidirectionally oriented piezoelectric films that can deform under energized conditions. (Reference) Figure 22 In case A, when no electric field is applied to the first active lens 710 and the second active lens 106, the second optical element 70 and the third optical element 105 can exhibit a first curvature state, and the first metasurface structure 740 and the second metasurface structure 109 have a first positional arrangement. When the processor applies voltages to the first active lens 710 and the second active lens 106 respectively through the first conductive element 720 and the second conductive element 107, in response to the applied voltage, reference... Figure 22In section B, the second optical element 70 and the third optical element 105 can deform to present a second curvature state. The first metasurface structure 740 and the second metasurface structure 109 have a second positional arrangement. The first metasurface structure 740 and the second metasurface structure 109 are respectively located on the first active lens 710 and the second active lens 106, and their positions change as a whole, resulting in a change in curvature. Combining multiple metasurface structures and active lenses in the optical engine of near-eye displays can effectively reduce the size and weight of the optical engine, thereby making the overall structure more compact. It should be understood that, from the perspective of the frontal projection area, for example... Figure 8 Or the orthographic projection area in 19, the size (outline) of the second optical element 70 can be smaller than the size (outline) of the third optical element 105, that is, the size of the first active lens 710 is smaller than the size of the second active lens 106, and the arrangement area of ​​the first metasurface structure 740 is smaller than the arrangement area of ​​the second metasurface structure 109.

[0058] In some embodiments, the first limiting part 210 can be connected to the frame 10. The first limiting part 210 can be connected to the frame 10 by means of bonding, snap-fitting, hinge, fastener fixing, etc. The materials of the first limiting part 210 and the frame 10 can be the same or different. The first limiting part 210 is provided with a first through hole 201, which communicates with the first cavity 101. The first temple 220 is provided with a second cavity 221, and a first electrical device 230 is provided in the second cavity 220. The first electrical device 230 may include a circuit board 230 or a main control board, etc. Referring to the system block diagram, the circuit board 230 can be rigid or flexible. The circuit board can be a single piece or multiple pieces electrically connected to each other. The circuit board 230 may include peripheral devices such as processor 2301, memory 2302, external capacitors / resistors / inductors and other peripheral devices 2308, operation units 2307 such as switches / control buttons, etc. In some embodiments, electrical devices such as microphone 2304 or vital signs / ambient light / brightness sensor 2306 may also be disposed in the second cavity 220.

[0059] The second limiting part 240 can be connected to the first temple 220. The second limiting part 240 can be connected to the first temple 220 by means of bonding, snap-fitting, hinge, fastener fixing, etc. The second limiting part 240 is provided with a second through hole 241, which can be understood as a groove, recess, through groove, or mounting groove, allowing components to be placed or passed through it. The second limiting part 240 and the first limiting part 210 are rotatably connected. The second limiting part 240 and the first limiting part 210 can be connected by hinge, rotary joint, spring hinge, etc., that is, the first temple 220 is rotatably connected to the frame 10 through the second limiting part 240 and the first limiting part 210. The second through hole 241 and the second cavity 221 are connected, and the first through hole 201 and the first cavity 101 are connected. The first wire 250 passes through the first through hole 201 and the second through hole 241 and is electrically connected to the near-eye display module 100 and the circuit board (first electrical device) 230.

[0060] In some embodiments, the first conductive element 720 may be electrically connected to the first wire 250 and electrically connected to the processor 2301 located on the first electrical device 230. In some embodiments, holes may be provided on the upper frame 13 and the lower frame 14, through which the second conductive element 107 may be electrically connected to the processor 2301 by wires passing through the holes. In some embodiments, the second conductive element 107 may be a coil that is electrically connected to the circuit board 230.

[0061] The second temple 260 has a third cavity 261, and the second temple 260 is rotatably connected to the frame 10. The first temple 220 can be rotatably connected to the frame 10; in other embodiments, the first temple 220 can also be fixedly connected to the frame 10. A second electrical device 232 is disposed in the third cavity 260. The second electrical device 232 can be a power module, for example, a rechargeable or replaceable battery via a charging interface 2322. A second wire 252 extends laterally along the frame 10. This lateral extension can be understood as crossing the direction of the left and right third optical elements 105, i.e., the direction of the left and right eyes of the wearer after the device 200 is worn. The second wire 252 passes through the first through hole 201 and the second through hole 241 and is electrically connected to the second electrical device 232 and the first electrical device 230. The first conductor 250 and the second conductor 252 can be flexible electrical conductors, which can be bent, folded, or bent. In another embodiment, the first conductor 250 can be a flexible conductor, and the second conductor 252 can be a non-flexible conductor. Electrical conductive lines can be printed on the first conductor 250 and the second conductor 252. The first conductor 250 and the second conductor 252 can be long and flat, or in some embodiments, they can be long cylindrical, or they can be multiple small long cylindrical strips arranged side by side. The overlapping portions of the projections of the first conductor 250 and the second conductor 252 on the frame 10 can be insulated from each other. The interior of the first conductor 250 and the second conductor 252 can be printed with metal (e.g., copper) conductive lines, and the surfaces of the two conductors can be coated with insulating material, so that contact between them will not cause an electrical short circuit. The frame 10 and the temple shell can be made of plastic, while the first limiting part 210 and the second limiting part 240 can be made of metal.

[0062] By placing the near-eye display module 100 in the frame 10, the first electrical device 230 in the first temple 220, and the second electrical device 232 in the second temple 260, the weight of the entire device 200 can be effectively balanced without the need for additional counterweights. Furthermore, the first wire 250 electrically connects the near-eye display module 100 and the first electrical device 230, and the second wire 252 extends laterally and electrically connects the near-eye display module 100 and the second electrical device 232. Both the first wire 250 and the second wire 252 pass through the first through hole 20. The first and second through holes 241 effectively reduce the exposure of the two wires and reduce wear on the wires during use. The battery and other components are set separately as the second electrical device 232 in the second temple 260. The second electrical device 232 and the first electrical device 230 are electrically connected by the laterally extended second wire 252. The space of each temple can be fully utilized. For example, the second temple 260 can accommodate a larger capacity battery and is electrically connected to the near-eye display module 100 through the extended second wire 252, effectively improving the battery life of the device.

[0063] In some embodiments, see Figure 2-5 The length of the first guide wire 250 is less than the length of the second guide wire 252. The near-eye display module 100 is configured to allow movement on the frame 10. The user can move the near-eye display module 100 by touching it with their finger or a tool. The first guide wire 250 moves at least partially within the first cavity 101 when the near-eye display module 100 moves relative to the frame 10. The movement of the first guide wire 250 can be understood as the first guide wire 250 being bent, folded, stretched, or unfolded. When the user slides the near-eye display module 100 toward the first temple 220, the first guide wire 250 can be bent or folded, causing the first guide wire 250 to be retracted or rolled up and located in the first cavity 101. When the user slides the near-eye display module 100 away from the first temple 220 and toward the second temple 260, the first guide wire 250 is stretched, unfolded, or tends to be stretched and located in the first cavity 101. The second conductor 252 is located within the frame 10 and remains fixed. The second conductor 252 can be fixed within the frame 10 by methods such as potting, bonding, snap-fitting, or fastener connection. During the movement of the near-eye display module 100, only a portion of the first conductor 250 is rolled up or stretched, while the second conductor 252 remains unaffected, effectively ensuring the stability of their respective electrical connections. The overlapping portions of the first conductor 250 and the second conductor 252 in the extending direction are electrically insulated. It is understood that, at the locations of the first cavity 101, the first through hole 201, and the second through hole 241, viewed from the projection direction from the near-eye side 102 to the environmental side 103, the first conductor 250 and the second conductor 252 at least partially overlap each other. For example, both the first conductor 250 and the second conductor 252 are made of flat flexible circuit boards. The first conductor 250 and the second conductor 252 can be made of polyester, polyethylene naphthalate, polyimide, or liquid crystal polymer, etc. In some embodiments, the first conductor 250 and the second conductor 252 have a metal conductive layer printed inside them. The surfaces of the two conductors can also be coated with insulating materials respectively. The surfaces of the first conductor 250 and the second conductor 252 are electrically insulated from each other, and they will not conduct electricity when in direct contact. This helps to ensure the independence of their respective electrical circuits and reduce the risk of short circuits.

[0064] In some embodiments, in conjunction with reference to Figure 2-5The first conductor 250 may have a first snap-fit ​​hole 2501, and the second conductor 252 may have a second snap-fit ​​hole 2521. The first snap-fit ​​hole 2501 and the second snap-fit ​​hole 2521 may be the same size and shape. The electrically conductive layers on the first conductor 250 and the second conductor 252 may respectively avoid the first snap-fit ​​hole 2501 and the second snap-fit ​​hole 2521. Since the second conductor 252 extends laterally along the frame 10, the second snap-fit ​​hole 2521 may include at least two and be spaced apart from each other, for example, there may be two or three second snap-fit ​​holes 2521 along the lateral direction of the frame 10. The frame 10 is provided with at least two snap-fit ​​posts 112, and the first snap-fit ​​hole 2501 and the second snap-fit ​​hole 2521 are respectively connected to the snap-fit ​​posts 112. For ease of understanding, only the snap-fit ​​post 112 located in the first cavity 101 is shown as an example. In reality, similar snap-fit ​​posts 112 can also be provided on the horizontal side of the frame 10 (not shown in the figure). For example, the second snap-fit ​​hole 2521 can be located in the middle of the frame 10 or near the position corresponding to the bridge of the nose after the nose pad is worn. The position of the snap-fit ​​post 112 corresponds to the second snap-fit ​​hole 2521. It can be understood that the snap-fit ​​post 112 can also be formed by the glue passing through the snap-fit ​​hole 2521 and curing during the glue-pouring process. In some embodiments, the snap-fit ​​post 112 can be shared. For example, the snap-fit ​​post 112 can also be connected to the sealing plate 115. The first wire 250 and the second wire 252 are fixed to the locking post 112 through the first locking hole 2501 and the second locking hole 2521 respectively, thereby fixing the first wire 250 and the second wire 252, which facilitates the efficient assembly of the device 200. In addition, when the near eye display module 100 moves relative to the frame 10, the first wire 250 is fixed by the locking post 112 located between the first temple 220 and the near eye display module 100. Therefore, the first wire 250 is allowed to move between the first sliding part 50 and the locking post 112, effectively reducing excessive movement of the first wire 250 and reducing the risk of damage to the first wire 250.

[0065] In existing technologies, the temple-to-frame rotation structure often features a large opening at the hinge, especially between the temple opening and retraction. The larger the angle range required, the larger the opening at the hinge needs to be. This can easily expose wires during rotation. Furthermore, the pivot of such hinges does not rotate; during rotation, the wires are forcibly bent at the opening, potentially causing damage over time. Some embodiments are described in conjunction with reference to... Figure 2-7The near-eye display device 200 may further include a rotating shaft 270, which is rotatably connected to the second limiting portion 240 and / or the first limiting portion 210. That is, the rotating shaft 270 can rotate relative to the second limiting portion 240, the first limiting portion 210, or simultaneously relative to both the first and second limiting portions 210. The rotating shaft 270 is provided with a third through hole 271. The first through hole 201, the second through hole 241, and the third through hole 271 can also be understood as a groove, through slot, or recess structure, meaning that components can be located or pass through them. The first cavity 101, the first through hole 201, the third through hole 271, and the second cavity 221 are connected. The first wire 250 and the second wire 252 pass through the third through hole 271. The rotating shaft 270 is configured to drive the first wire 250 and the second wire 252 to rotate synchronously. The pivot 270 can be mounted on the second limiting part 240 and located within the second through hole 241. The rotation of the pivot 270 allows the first wire 250 and the second wire 252 to rotate together as a whole. That is, the first wire 250 and the second wire 252 will rotate synchronously with the rotation of the pivot 270. For example, when the first temple 220 rotates relative to the frame 10, it can drive the pivot 270 to rotate relative to it. At this time, the first wire 250 and the second wire 252 are allowed to rotate synchronously, rather than simply bending. When the first temple 220 rotates relative to the frame 10, the third through hole 271 can always be connected to the first temple 220 and is not easily exposed to the user. This can effectively prevent the first wire 250 and the second wire 252 from being exposed during rotation, reducing the risk of water or other foreign objects entering and damaging the wires. When the rotation angle is the same or greater (relative to the prior art), this application can reduce the opening size of the third through hole 271 during the rotation of the temple relative to the frame, saving materials, and at the same time reducing the wear of bending or twisting of the first wire 250 and the second wire 252, effectively improving the protection of the first wire 250 and the second wire 252 during the rotation process.

[0066] In some embodiments, in conjunction with reference to Figure 1-5The near-eye display device 200 may further include a fastener 280, which may be a screw or bolt, etc. The first limiting portion 210 may include a first connecting section 212, which has a fourth through hole 213. The second limiting portion 240 includes a second connecting section 242, which has a fifth through hole 243. The rotating shaft 270 has a fixing hole 272. The fixing hole 272, the fourth through hole 213, and the fifth through hole 243 may be coaxially arranged. The first connecting section 212 and the second connecting section 242 may be arc-shaped or annular protrusions. The fastener 280 passes through the fourth through hole 213 and the fifth through hole 243 and is connected to the fixing hole 272. For example, a single fastener 280 may completely pass through the fourth through hole 213 and the fifth through hole 243 and be connected to the fixing hole 272. In some embodiments, the second connecting segment 242 may be located inside the first connecting segment 212, and the rotating shaft 270 may be located inside the second connecting segment 242; in other embodiments, the second connecting segment 242 may be located outside the first connecting segment 212, and the rotating shaft 270 may be located inside the first connecting segment 242.

[0067] In some embodiments, the references continue to be used. Figure 1-5 The system comprises two oppositely arranged first connecting segments 212, two oppositely arranged second connecting segments 242, and two oppositely arranged fasteners 280. The second connecting segments 242 are located between the two first connecting segments 212. The first and second connecting segments 212 can be U-shaped or semi-I-shaped, respectively. A rotating shaft 270 is located between the two second connecting segments 242. Each fastener 280 connects each second connecting segment 242 and each first connecting segment 212. A first wire 250 and a second wire 252 are located between the two fasteners 280. The length of the fastener 280 does not pass through the third through hole 271. The first wire 250 and the second wire 252 are spaced apart from the fasteners 280. By using two fasteners 280 to fix the first connecting segments 212 and the second connecting segments 242 respectively, the contact between the first and second wires 250 and the fasteners 280 can be effectively reduced, thus reducing wear on the wires.

[0068] In some embodiments, in conjunction with reference to Figure 2-7The rotating shaft 270 may include a first rotating shaft segment 2701 and a second rotating shaft segment 2702. The first rotating shaft segment 2701 and the second rotating shaft segment 2702 may have the same structure. The first rotating shaft segment 2701 and the second rotating shaft segment 2702 respectively include an annular segment 273, an extension segment 274 and a fixing segment 275. The annular segment 273 is provided with a fixing hole 272. The extension segment 274 and the fixing segment 275 extend away from the annular segment 273 and are circumferentially spaced along the fixing hole 272. 4 is provided with a connecting hole 276. The extension section 274 can be larger than the fixed section 275. The fixed section 275 can be a columnar protrusion. The fixed section 275 of the first rotating shaft section 2701 is connected to the connecting hole 276 of the extension section 274 of the second rotating shaft section 2702. The connecting hole 276 of the extension section 274 of the first rotating shaft section 2701 is connected to the fixed section 275 of the second rotating shaft section 2702. The fixed section 275 and the connecting hole 276 can be snap-fitted, plugged in, or glued, etc. It can be understood that the first rotating shaft section 2701 and the second rotating shaft section 2702 are spliced ​​from the same structure and can be directly formed by the same mold, which can effectively reduce the mold opening cost. The first rotating shaft section 2701 and the second rotating shaft section 2702 can be made of plastic or the like. The material of the rotating shaft 270 can be different from that of the first limiting part 210 and the second limiting part 240, which can effectively reduce material and processing costs. Of course, in other embodiments, the materials of the pivot 270, the first limiting part 210 and the second limiting part 240 can also be the same, which can improve the overall robustness.

[0069] In some embodiments, in conjunction with reference to Figure 2-6The frame 10 has two oppositely arranged connecting grooves 111. The first limiting part 210 also includes a first limiting body 214 and a first protrusion 215. The first protrusion 215 and the first connecting segment 212 are respectively located at both ends of the first limiting body 214. The first protrusion 215 extends away from the first connecting segment 212. The first protrusion 215 includes two spaced-apart parts. The two first protrusions 215 are respectively fixedly connected to the two connecting grooves 111, such as by snap-fit, tight fit or adhesive. In some embodiments, the inner wall of the connecting groove 111 may also be provided with a corresponding guide groove (not shown in the figure), which is beneficial for the first protrusion 215 to be accurately snapped into the connecting groove 111. The two first protrusions 215 can be parallel to each other, the two first connecting segments 212 can be parallel to each other, and the first protrusion 215 can be parallel to the first connecting segment 212. The first through hole 201 penetrates the first limiting body 214, and the first protrusion 215 and the first connecting segment 212 are both located on both sides of the first through hole 201. The frame 10 may also include a transition groove 114, which is connected to the first cavity 101. The first wire 250 and the second wire 252 can pass through the first cavity 101, through the transition groove 114, into the third through hole 271, and finally into the second cavity 221 to be electrically connected to the first electrical device 230 therein. One of the two connecting grooves 111 is above the transition groove 114, and the other connecting groove 111 is below the transition groove 114. In this way, the frame 10 and the first limiting part 210 can be made of different materials, and the first protrusion 215 can be stably connected to the connecting groove 111, which is conducive to the concealed installation of the first wire 250 and the second wire 252 without exposure.

[0070] In some embodiments, combined with Figure 5-6 The first protrusion 215 may include periodically arranged protrusions away from the first limiting body 214. These protrusions may be, for example, wavy, sinusoidal, or spaced-apart. Such periodically arranged protrusions facilitate the formation of a larger contact area, allowing adhesives to fully bond the first protrusion 215 to the connecting groove 111. The periodically arranged protrusions 215 also help guide the first protrusion 215 into the connecting groove 111. In some embodiments, the first protrusion 215 has at least one through hole 216 for accommodating adhesives, allowing for more adhesive to be contained, resulting in a more secure and stable connection between the first protrusion 215 and the connecting groove 111. This contributes to a more stable connection between the first protrusion 215 and the connecting groove 111. Furthermore, the through hole 216 effectively reduces the overall weight of the first limiting part 210, further reducing the weight of the device 200. The through hole 216 also facilitates the elastic deformation of the first protrusion 215, making it easier for the first protrusion 215 and the connecting groove 111 to engage.

[0071] In some embodiments, in conjunction with reference to Figure 8-15 The near-eye display module 100 is provided with a first sliding part 50, and the frame 10 is provided with a second sliding part 12 that cooperates with the first sliding part 50. The second sliding part 12 can be formed by directly cutting a groove in the frame 10, or by adding a fixing block 16 and setting the second sliding part 12 on the fixing block 16. Both can be understood as the second sliding part 12 being provided inside the frame 10. The near-eye display module 100 is configured to move toward the first temple 220 to bend the first guide wire 250, and the near-eye display module 100 is also configured to move away from the first temple 220 to unfold the first guide wire 250.

[0072] In some embodiments, in conjunction with reference to Figure 12 The near-eye display module 100 may further include a first housing 20 with a first accommodating cavity 21; a microdisplay assembly 30 disposed in the first accommodating cavity 21 for generating light; a first optical element 40 disposed in the first housing 20 and located on the light-emitting side of the microdisplay assembly 30, wherein the light from the microdisplay assembly 30 enters from the first end of the first optical element 40 and exits from the second end of the first optical element 40; and a damping rotation mechanism 60 located between the first housing 20 and the first sliding part 50, wherein the damping rotation mechanism 60 is rotatably connected to the first housing 20, and the first housing 20 is configured to allow damped rotation relative to the frame 10 by the damping rotation mechanism 60 and to maintain the first optical element 40 and the second optical element 70 relative to the frame 10 at a predetermined fixed angle for light emission.

[0073] See also Figure 8-15 The microdisplay assembly 30 may include a microdisplay 31, a third wire 32, and a first electrical interface 33 that are electrically connected to each other. The microdisplay 31 and the first optical element 40 are aligned. The third wire 32 connects the microdisplay 31 and the first electrical interface 33. The first wire 250 is provided with a second electrical interface 2510, which is electrically connected to the first electrical interface 33. The near-eye display device 200 also includes a sealing plate 115, which is connected to the frame 10 and seals the first cavity 101. The frame 10 may be provided with a positioning post 113. The sealing plate 115 may be fixedly connected to the positioning post 113 first, and then the sealing plate 115 and the frame 10 may be sealed with sealant, thereby effectively preventing the first wire 250 from being exposed.

[0074] See also Figure 1-7 The rotational connection structure between the second temple 260 and the frame 10 can be exactly the same as the rotational connection structure between the first temple 220 and the frame 10. That is, the first limiting part 210, the second limiting part 240 and the rotating shaft 270 described in the above embodiments are also applicable to the second temple 260 and the frame 10, and will not be repeated here.

[0075] It is understood that the first electrical device 230 may include a main control circuit board, on which a processor 2301, a memory 2302, a transceiver 2303, and peripheral devices 2308 such as capacitors / resistors / inductors may be mounted. The first temple 220 may also contain a microphone 2304, a right speaker 2305, an inertial sensor 2306, and an interactive operation unit 2307 such as a switch button / touch / physical switch. These related devices can be electrically connected to the first electrical device 230, and all or part of them can be located on the main control board of the first electrical device 230, or they can be spaced apart from the main control circuit board. The second electrical device 232 may include a rechargeable battery. The second temple may also contain a left speaker 2321, a charging interface 2322, and a brightness or vital signs sensor 2323, thereby effectively balancing the weight of the left and right temples without the need for additional counterweights, ensuring a lighter overall weight for the device 200. The microphone 2304 can collect ambient or wearer sound sources, and the number of microphones 2304 can be one or more. The charging port 2322 can support wired or wireless charging. The left speaker 2321 and right speaker 2305 can play sound. The brightness sensor 2323 can detect the ambient light and adaptively adjust the display brightness of the microdisplay 1101. The inertia sensor 2306 can detect the wearer's posture. The operation unit 2307 allows the wearer to directly perform operations to achieve interaction, such as powering on / off, page turning, volume adjustment, play / pause, quick wake-up, or quickly calling the local AI assistant, etc.

[0076] In some embodiments, memory 2302 may include high-speed random access memory or non-volatile memory, such as one or more disk storage devices, one or more optical storage devices, or flash memory. It stores N instruction sets for processing basic system services and performing hardware-related tasks; these instruction sets may be instruction sets used to facilitate processing of related sensors or interfaces. Memory 2302 may also store an operating system, such as Darwin, RTXC (Real-Time Multiprocessor Execution System), LINUX, UNIX, Android, iOS, WINDOWS, or other embedded operating systems. Memory 2302 stores one or more programs configured to be executed by the one or more processors 2301, the one or more programs including instruction sets for operation.

[0077] In some embodiments, transceiver 2303 may include wireless communication, including radio frequency receivers and transmitters and / or optical (e.g., infrared) receivers and transmitters, designed to operate through a global system targeting one or a combination of mobile communication (GSM) networks, GPRS networks, enhanced data GSM environment (EDGE) networks, IEEE 802.xx communication networks (e.g., WiFi, WiMax, ZigBee™), 3G, 4G, 4G LTE, 5G, code division multiple access (CDMA) networks, near field communication (NFC), WiFi Direct, infrared, and Bluetooth networks. The wireless communication unit may include managed protocols to enable the device to be configured as a base station for other wireless devices. For example, the communication subsystem may allow the device to synchronize with the host device using one or more protocols or communication technologies, such as TCP / IP (Transmission Control Protocol / Internet Protocol), HTTP (Hypertext Transfer Protocol), UDP (User Datagram Protocol), ICMP, POP (Post Office Protocol), FTP (File Transfer Protocol), and DCOM (Distributed Component Object Model) or any other known communication protocol or technology.

[0078] Figure 16An example of a network environment application of the near-eye display device 200 is illustrated. It includes the near-eye display device 200, an external terminal device 300, and an external or local cloud computing platform or server 400. The near-eye display device 200 can first communicate with the terminal device 300 via a wireless network such as a transceiver 2303. The terminal device 300 then communicates with the external or local cloud computing platform or server 400, thereby enabling the near-eye display device 200 to communicate with the external or local cloud computing platform or server 400. The near-eye display device 200, the (external) terminal device 300, and the server 400 can each be used to store and process content data received or uploaded by the near-eye display device 200. In some embodiments, the near-eye display device 200 can directly communicate with the server 400 via a wireless or wired network. The near-eye display device 200 can be a portable, mobile, lightweight device, such as smart glasses, augmented reality devices, etc., and may include a near-eye display module 100. The terminal device 300 can be a smartphone, laptop, tablet, desktop computer, ring, bracelet, etc. In some embodiments, the near-eye display devices 200 can also communicate with each other. In some embodiments, the near-eye display devices 200 can also communicate with wearable interactive devices such as smart rings, bracelets, or handles. Interactive operations on the near-eye display devices 200 can be achieved through such interactive devices, such as page turning, page swiping, selection, or confirmation.

[0079] See also Figure 8-15This application provides a near-eye display module 100, which is applied to the near-eye display device 200 described above, and can also be applied to a helmet or similar head-mounted device. The frame 10 can be assembled with the near-eye display module 100 as a whole or as two independent components onto the device or equipment described above. The frame 10 and the near-eye display module 100 can be movably connected, and the first housing 20 can be fixed to the frame 10 in a detachable or releasable manner. The near-eye display module 100 includes a first housing 20, a microdisplay assembly 30, a first sliding part 50, and a damping rotation mechanism 60. The first housing 20 can be made of plastic or metal, and the first housing 20 has a first receiving cavity 21. The microdisplay assembly 30 is disposed in the first receiving cavity 21, and the microdisplay assembly 30 is used to generate light. The first optical element 40 is disposed on the first housing 20 and located on the light-emitting side of the microdisplay assembly 30. The first optical element 40 can be made of materials such as PMMA (polymethyl methacrylate), PC (polycarbonate) plastic, glass, and resin. The light from the microdisplay assembly 30 enters from the first end of the first optical element 40 and exits from the second end of the first optical element 40. The first end and the second end are two opposite ends of the first optical element 40, respectively. Figure 1-3For example, light from the microdisplay assembly 30 can be emitted from the first optical element 40 and then through the optical axis O of the second optical element 70. The light from the microdisplay assembly 30 can undergo multiple reflections within the first optical element 40 before exiting and entering the first active lens 710. In other embodiments, the light from the microdisplay assembly 30 can be refracted and reflected within the first optical element 40 before exiting and entering the first active lens 710. The light from the microdisplay assembly 30, after exiting the first optical element 40 and entering the first active lens 710, can display digital content in the human eye. Users can adjust the curvature, shape, or dispersion coefficient of the first active lens 710 as needed, allowing users to adjust the first active lens 710 according to their visual impairment to achieve clear viewing of digital content. The first sliding portion 50 is located on one side of the first housing 20 and is configured to connect with the second sliding portion 12 of the frame 10. The first sliding portion 50 can be located beside or on the bottom of the first housing 20. The location of the first sliding portion 50 on one side of the first housing 20 can be understood as the positional relationship of the first sliding portion 50 relative to the first housing 20. The connection relationship can be that the first sliding portion 50 is directly connected to the first housing 20 or indirectly connected to the first housing 20. One of the first sliding portion 50 and the second sliding portion 12 may include a protrusion, and the other may include a groove. The two cooperate to allow the first sliding portion 50 and the second sliding portion 12 to slide or move relative to each other. In some embodiments, the first sliding portion 50 and the second sliding portion 12 may include a length extending in a predetermined direction. In some embodiments, the first sliding portion 50 and the second sliding portion 12 may also include, for example, rolling between cooperating balls or rolling between meshing gears.

[0080] A damping rotation mechanism 60 is located between the first housing 20 and the first sliding part 50. The damping rotation mechanism 60 is rotatably connected to the first housing 20. The first housing 20 is configured to allow damped rotation relative to the frame 10 via the damping rotation mechanism 60, and to maintain the first optical element 40 and the second optical element 70 at a predetermined fixed angle relative to the frame 10 for light emission. Taking the frame 10 on the near-eye display device 200 as an example, the predetermined fixed angle of light emission can be the vertical direction of the near-eye display device 200 corresponding to the user's eyes. It can be understood that the damping rotation mechanism 60 can be tightly connected to the first housing 20 and allows mutual rotation. For example, the two parts can rotate relative to each other through external force, such as the user's hand or a tool, to rotate the first housing 20 relative to the damping rotation mechanism 60. The damping rotation mechanism 60 and the first housing 20 are tightly fitted with a pre-tightening force. When the first housing 20 rotates relative to the frame 10 to the angle expected by the user, the microdisplay assembly 30 and the first optical element 40 are rotated synchronously on the first housing 20. At the same time, the microdisplay assembly 30 and the first optical element 40 follow the first housing 20 and remain fixed at the expected rotation angle, thereby enabling the first optical element 40 to emit light at the angle expected by the user, and achieving the adjustment of the light emission angle that meets the user's expectations.

[0081] The first sliding part 50 is configured to allow movement relative to the second sliding part 12, and to drive the damping rotation mechanism 60 and the first housing 20 to move synchronously relative to the frame 10, thereby holding the first optical element 40 in a predetermined fixed lateral position relative to the frame 10. This lateral position can be the extension direction of either the first sliding part 50 or the second sliding part 12. For example, the lateral position of the frame 10 on the near-eye display device 200 can be the direction corresponding to the left or right eyes of the user wearing the device. It is understandable that mutual movement or sliding can be achieved through external force. For example, the user's hand or a tool can be used to move the first housing 20 laterally. The first sliding part 50 moves relative to the second sliding part 12 of the frame 10, which drives the damping rotation mechanism 60 connected to the first housing 20 to move synchronously relative to the frame 10. At this time, the microdisplay assembly 30 and the first optical element 40 are located on the first housing 20 and move synchronously. The first sliding part 50 and the second sliding part 12 can maintain a tight fit. At the same time, the microdisplay assembly 30 and the first optical element 40 follow the first housing 20 and remain fixed in the expected lateral position. The lateral position can be the rotation center A of the rotating shaft of the damping rotation mechanism 60, or it can be the extension direction of the first sliding part 50. This enables the first optical element 40 to emit light at the lateral position expected by the user, achieving the lateral light emission position adjustment that meets the user's expectations.

[0082] The above method enables the near-eye display module 100 to be assembled into the frame 10 of the near-eye display device 200, or to be worn on the human eye, so that the horizontal field of view of the first optical element 40 can be adjusted through the first sliding part and the second sliding part, and the vertical field of view of the first optical element 40 can be adjusted through the damping rotation mechanism 60. This allows different users to have clear viewing within their respective fields of vision. At the same time, the movement of the first sliding part 50 drives the damping rotation mechanism 60, the first housing 20, the microdisplay assembly 30 and the first optical element 40 to move synchronously relative to the frame 10, which effectively improves the stability of the overall components during movement. It also ensures that the damping rotation mechanism 60 can rotate at various lateral positions during movement, effectively improving the accuracy of the field of view adjustment.

[0083] In some embodiments, the first housing 20 facing the human eye side 102 is also provided with scale markings. When the user moves the near-eye display module 100 relative to the frame 10, the user can clearly see the position of the movement, which can more accurately meet the user's adjustment needs. (See also...) Figure 1 and 9 The frame 10 may further include an upper frame 13 and a lower frame 14. A third optical element 105 can be mounted between the upper frame 13 and the lower frame 14. The upper frame 13 can be located away from the third optical element 105. The rotation range of the first housing 20 toward the third optical element 105 is greater than its rotation range toward the upper frame 13. It can be understood that the first housing 20 is allowed to rotate at an angle greater than its rotation angle toward the upper frame 13, in conjunction with... Figure 13 For example, after the near-eye display module 100 is assembled into the frame 10, with S1 as a reference, the angle at which the near-eye display module 100 rotates towards the S2 direction (right side) is greater than the angle at which it rotates away from the S2 direction (left side). This allows the user to efficiently adjust to a suitable vertical viewing angle.

[0084] In some embodiments, in conjunction with reference Figure 9 and 14The rotation center A of the damping rotation mechanism 60 is parallel to the plane containing the microdisplay assembly 30. It can be understood that the entire microdisplay assembly 30 or its main body can be flat; for example, the microdisplay 31 of the microdisplay assembly 30 can be flat or plate-shaped, and its own plane or the plane it is located on can be used as a reference. In some embodiments, the direction of the rotation center A can also be described as transverse. The parallelism between the rotation center A of the damping rotation mechanism 60 and the plane containing the microdisplay assembly 30 ensures that the entire microdisplay assembly 30 or its main body (i.e., the microdisplay 31) remains relatively fixed during rotation, reducing the risk of positional deviation of the microdisplay assembly 30 during rotation. The first sliding portion 50 is located on the side of the first housing 20 opposite to the first optical element 40, effectively reducing the width impact caused by the first sliding portion 50 being located beside the first housing 20. Therefore, when the near-eye display module 100 is assembled into the frame 10, for example, into the frame 10 of the near-eye display device 200, the width of the frame 10 can be effectively reduced, which is beneficial for the concealed design of the near-eye display module 100. The first sliding portion 50 extends along the rotation center A of the rotation axis of the damping rotation mechanism 60. The extension length of the first sliding portion 50 is less than the length of the microdisplay assembly 30, effectively reducing the material and weight of the first sliding portion 50, further effectively reducing the weight of the near-eye display module 100, which is beneficial for the lightweight design of the near-eye display module 100 after assembly into the frame 10.

[0085] In some embodiments, in conjunction with reference Figure 12-14The first housing 20 has a first hole 22. The damping rotation mechanism 60 includes a locking member 61 and a bushing 62. The axial line connecting the center of the locking member 61 and the first hole 22 is the direction of the rotation center A. The shaft of the damping rotation mechanism 60 can be located on the locking member 61. The locking member 61 passes through the bushing 62 and is fixed to the first hole 22. The locking member 61 can be a screw, bolt, or bolt. The locking member 61 can be provided with external threads, and the inner wall of the first hole 22 can be provided with internal threads. The two are threadedly connected to each other. In other embodiments, the locking member 61 and the first hole 22 can also be connected by an interference fit. For example, the shaft of the locking member 61 is inserted into the first hole 22 to produce elastic deformation to achieve a damping connection. In other embodiments, the locking member 61 can be a pin structure inserted into the first hole 22, and damping materials such as rubber rings or damping coatings are provided on its mating surface to achieve damping rotation. In other embodiments, the locking member 61 and the first hole 22 are connected by a key or glue to achieve damping rotation. The first sliding part 50 is connected to the outer periphery of the bushing 62. The first sliding part 50 extends away from the locking member 61. It can be understood that by connecting the first sliding part 50 and the locking member 61 together, the first sliding part 50 can drive the entire damping rotation mechanism 60 to move along the direction (or laterally) of the rotation center A. At the same time, when the first sliding part 50 and the second sliding part 12 are connected, the first sliding part 50 is circumferentially fixed and supported, thereby allowing the first housing 20 to rotate relative to the frame 10 through the damping rotation mechanism 60. For example, the user can operate the first housing 20 by hand or external clamps to achieve the rotation of the first housing 20, thereby driving the synchronous rotation of the first optical element 40 to achieve the expected fixed angle light output adjustment.

[0086] In some embodiments, continue reading Figure 12 The damping rotation mechanism 60 may also include a first washer 63 and a second washer 64. The locking member 61 passes through the bushing 62, the first washer 63 and the second washer 64 and is fixed in the first hole 22. The first washer 63 and the second washer 64 may be made of rubber, plastic, metal or composite materials, etc. The two washer can ensure that the locking member 61 and the first hole 22 are more firmly fixed, effectively improve the damping effect during rotation, and reduce the possibility that the damping rotation mechanism 60 is too loose during rotation, which would cause the first housing 20 to fail to maintain the expected fixed rotation position. That is, when the user rotates the first housing 20 to the expected angle, the first housing 20 can still maintain the position at the angle by relying on this damping force, and finally ensure that the first optical element 40 emits light at the expected stable angle.

[0087] In some embodiments, such as Figure 12The first washer 63 and the second washer 64 are located on both sides of the bushing 62, that is, the bushing 62 is clamped by the first washer 63 and the second washer 64. The locking member 61 may have a threaded shaft part 611 and a head 612 such as a slotted or cross-shaped head. The first washer 63, the second washer 64 and the bushing 62 may be sleeved on the shaft part 611. The shaft part 611 is fixed into the first hole 22 by rotating the head 612. One washer may be located between the head 612 of the locking member 61 and the bushing 62, and the other washer may be located between the bushing 62 and the first housing 20.

[0088] In other embodiments, the first gasket 63 and the second gasket 64 are both located on the same side of the bushing 62. The first gasket 63, the second gasket 64 and the bushing 62 are sleeved on the shaft portion 611. The first gasket 63 and the second gasket 64 are both located between the head 612 and the bushing 62, or the first gasket 63 and the second gasket 64 are both located between the first housing 20 and the bushing 62.

[0089] In some embodiments, the first housing 20 may further be provided with a protrusion 24, which may protrude relative to the side of the first housing 20. The protrusion 24 may be cylindrical and has a threaded first hole 22. The bushing 62 is at least partially fitted onto the protrusion 24. It is understood that the protrusion 24 can effectively reduce the length of the shaft portion 611 of the locking member 61. The bushing 62 can be fitted onto the protrusion 24 and pressed and fixed in the first hole 22 by the head 612 of the locking member 61. In some embodiments, the bushing 62 may be partially fitted onto the protrusion 24 and partially fitted onto the shaft portion 611 and fixed in the first hole 22. In other embodiments, regarding the first gasket 63 and the second gasket 64, the first gasket 63, the second gasket 64, and the bushing 62 may all be fitted onto the protrusion 24, or a portion of the first gasket 63, the second gasket 64, and the bushing 62 may be fitted onto the protrusion 24 and another portion may be fitted onto the shaft portion 611. The extension length of the first sliding portion 50 is less than the radial dimension of the first optical element 40, thereby effectively reducing the length of the first sliding portion 50 and lowering the overall weight.

[0090] In some embodiments, combined with Figures 9-12The microdisplay assembly 30 includes a microdisplay 31, a first wire 32, and a first electrical interface 33 that are electrically connected to each other. The microdisplay 31 and the first optical element 40 are aligned. The microdisplay 31 may include, but is not limited to, Micro-LED (Micro Light-Emitting Diode), Micro-oled (Micro Organic Light-Emitting Diode), LCoS (Liquid Crystal On Silicon), LCD (Liquid Crystal Display), DMD (Digital Micromirror Device) / DLP (Digital Light Processing) or LBS (Laser Beam Scanning), or any combination of these technologies. The first wire 32 connects the microdisplay 31 and the first electrical interface 33. The first wire 32 can be a flexible electrical plate. The damping rotation mechanism 60 and the first sliding part 50 are both located on the side of the first housing 20 closer to the microdisplay 31 and farther from the first electrical interface 33, avoiding positional interference between the first sliding part 50 and the first electrical interface 33 during movement and rotation. This facilitates the assembly of the near-eye display module 100 into the frame 10 and makes rotation and movement of the display module 100 easier. (See also...) Figure 9 and 12The microdisplay 31 and the first wire 32 are electrically connected to the second electrical interface 2510 via the first electrical interface 34. The second electrical interface 2510 may be located within the first cavity 101 of the frame 10. The second electrical interface 2510 can be further electrically connected to the first electrical device 230 (e.g., processor 2301) located on the first temple 220 via the first wire 250. In some embodiments, a reinforcing plate or a cache chip 34 may also be provided on the back of the first electrical interface 34. The microdisplay 31, the first wire 32, and the first electrical interface 34 can be sealed to the first housing 20. For example, the first housing 20 can also be provided with a cover plate 26, which is sealed to the first housing 20 to seal the microdisplay 31 and the first wire 32 in the first accommodating cavity 21. Alternatively, an opening can be provided on the cover plate 26 at the position corresponding to the first electrical interface 34 to allow the first electrical interface 34 and the second electrical interface 2510 to be electrically connected. In other embodiments, the cover plate 26 may not be provided. After the first electrical interface 34 and the second electrical interface 2510 are electrically connected, the microdisplay 31, the first wire 32, the first electrical interface 34, and the second electrical interface 2510 can be sealed with glue by potting. By sealing the microdisplay 31, the first wire 32, and the first electrical interface 34 to the first housing 20, the waterproof effect of the display module 20 can be effectively improved, reducing the risk of sweat or rainwater seepage during wear. In some embodiments, the extension length of the first sliding portion 50 may be less than the length of the microdisplay 31, thereby reducing the size of the first sliding portion 50 and lowering the overall weight.

[0091] See also Figure 14 The bushing 60 may include an annular body 621 and a second hole 623 located in the annular body 621, with the shaft portion 611 passing through the second hole 623. The first sliding portion 50 may include a connecting portion 52 and an outer edge portion 54, wherein the connecting portion 52 is connected to the outer periphery of the annular body 621, for example, it may be tangent to the annular body 621, and the outer edge portion 54 is connected to the connecting portion 52. The width of the outer edge portion 54 is greater than the width of the connecting portion 52 in the direction away from the annular body 621. The second sliding portion 12 may include a groove adapted to the shape of the first sliding portion 50, and the connecting portion 52 and the outer edge portion 54 may be tightly fitted and engaged in the groove, thereby achieving position fixation during the sliding process.

[0092] In some embodiments, in conjunction with reference Figure 10-13The near-eye display module 100 also includes a rotation center A passing through the rotation axis of the damping rotation mechanism 60 and passing through a first center plane S1 of the frame 10. For example, the frame 10 of the first housing 20 has a bottom plane, and the first center plane S1 is perpendicular to this plane. Alternatively, the first center plane S1 can be the symmetrical center plane of the frame 10. For example, the second sliding part 12 can include grooves on both sides, and the grooves on both sides are symmetrical with respect to the first center plane S1. The first optical element 40 includes a second center plane S2, and the overall structure of the first optical element 40 can be symmetrical with respect to the second center plane S2. In some embodiments, the second center plane S2 can also be the center of the first housing 20, and the second center plane S2 can also be a plane passing through the optical axis O. It is understood that the above-mentioned center plane is only for the convenience of describing the relative rotation relationship between the first optical element 40 and the frame 10. In other embodiments, if other reference frames (such as reference planes or reference centers) are used to directly or indirectly describe the relative rotation relationship between the first optical element 40 and the frame 10, it should still fall within the protection scope of the rotation angle of this application. The rotation angle C of the second center plane S2 relative to the first center plane S1 is 0-25°, such as 0°, 5°, 10°, 13°, 15°, 20°, 25°, etc. Of course, the actual rotation angle is not limited to the above values, and users can change it according to their actual needs. Figure 2 This is an example diagram showing how the first housing 20 drives the first optical element 40 to rotate to the first position. The rotation angle C of the second center plane S2 relative to the first center plane S1 can be 0°. At this time, the two center planes coincide. When the frame 10 and the first housing 20 are both flat, the frame 10 and the first housing 20 are parallel to each other, or the first optical element 40 is parallel to the frame 10. Figure 8 This is an example diagram showing how the first housing 20 drives the first optical element 40 to rotate to a second position, where the rotation angle C of the second center plane S2 relative to the first center plane S1 is not 0°.

[0093] In some embodiments, reference is made to the following: Figure 1-11 The first housing 20 moves relative to the frame 10 by a distance of 0-1cm, such as 0, 0.1cm, 0.2cm, 0.4cm, 0.5cm, 0.7cm, 0.8cm, 0.9cm, 1cm, etc. Of course, the actual moving distance is not limited to the above values; users can vary it according to their actual needs. Since the microdisplay 31 and the first optical element 40 are mounted on the first housing 20, the first housing 20 drives the microdisplay 31 and the first optical element 40 to move synchronously, achieving lateral light emission from different positions. Figure 2 As shown, this position can be considered the initial position, at which point the distance moved is 0cm. Figure 3 An example diagram showing the first housing 20 moving a distance greater than 0 cm relative to the frame 10, wherein... Figure 3The example also illustrates how the first housing 20 drives the first optical element 40 of the first housing 10 to rotate by an angle greater than 0°. It is understood that the movement and rotation operations of the near-eye display module 100 of this application can be performed separately, and rotation or movement during movement or rotation is also permitted. In the lateral position, the damping rotation mechanism 60 can be moved as a whole, effectively improving the flexibility and accuracy of the light emission angle of the near-eye display module 100, while effectively reducing interference and damage to the device during movement and operation.

[0094] In some embodiments, in conjunction with reference Figure 15 The first optical element 40 further includes a light-inlet surface 42, a first reflective surface 43, a second reflective surface 44, and a light-outlet surface 45; the light-inlet surface 42 is located at the first end; the first reflective surface 43 is located at the second end opposite to the first end; the second reflective surface 44 is located at the first end and surrounds the light-inlet surface 42.

[0095] The light-emitting surface 45 is located at the second end, surrounding the first reflective surface 43. The microdisplay assembly 30 faces the light-receiving surface 42, and the second optical element 70 faces the light-emitting surface 45. The first optical element 40 may be a solid substrate made of transparent or light-transmitting material. The light-receiving surface 42 and the second reflective surface 44 are located at the first end of the solid substrate, and the first reflective surface 43 and the light-emitting surface 45 are located at the second end of the solid substrate. In some embodiments, the first optical element 40 may be a hollow structure, for example, a hollow structure between the first and second ends. It is understood that the first reflective surface 43 and the second reflective surface 44 are coated with a reflective film, such as a metal or metal alloy reflective film made of silver, aluminum, etc. The microdisplay 30 faces the light-inlet surface 42, and the second optical element 70 faces the light-outlet surface 45. The light generated by the microdisplay 31 enters through the light-inlet surface 42 and is projected onto the first reflective surface 43, then reflected by the first reflective surface 43 to the second reflective surface 44, and finally emitted from the light-outlet surface 45. The first reflective surface 43 and the second reflective surface 44 may be one or a combination of inclined plane, arc surface, spherical surface, aspherical surface or freeform surface. The incident surface 43 and the exit surface 46 may be one or a combination of plane, arc surface, spherical surface, aspherical surface or freeform surface.

[0096] In some embodiments, the first reflecting surface 43 and the light-emitting surface 45 can be continuous surfaces, and the light-entering surface 42 and the second reflecting surface 44 can be continuous surfaces. Continuous surfaces can be understood as being constructed by the same function, for example, both being freeform surfaces constructed using the same Zernike polynomial function. In some embodiments, the surfaces formed by the first reflecting surface 43 and the light-emitting surface 45, and the surfaces formed by the light-entering surface 42 and the second reflecting surface 44 are constructed by the same function and can be parallel to each other. In some embodiments, the surfaces formed by the first reflecting surface 43 and the light-emitting surface 45, and the surfaces formed by the light-entering surface 42 and the second reflecting surface 44 are all freeform surfaces.

[0097] In some embodiments, the light-incoming surface 42 and the first reflective surface 43 can both be circular, elliptical, or polygonal, etc., and the shapes of the second reflective surface 44 and the light-emitting surface 45 can be polygonal, circular, elliptical, or closed shapes formed by arcs and straight edges, etc. In some embodiments, the light-incoming surface 42 and the first reflective surface 43 are the same or similar. In some embodiments, the area of ​​the first reflective surface 43 is greater than or equal to that of the light-incoming surface 42, and the area of ​​the light-incoming surface 42 is greater than or equal to the area of ​​the region of the microdisplay 30 used to generate light, thereby ensuring that the light from the microdisplay 30 can completely enter and be fully reflected before being emitted by the light-emitting surface 45.

[0098] In some applications, the first optical element 40 can be cylindrical, such as a cylinder or an elliptical cylinder. During product assembly, it is often difficult to determine the precise orientation of the first optical element 40, leading to assembly errors. Therefore, please refer to... Figure 10 This application provides a chamfer 421 on the outer periphery of the light-receiving surface 42. The chamfer 421 can be a right-sided shape, a rhombus, a triangle, or a polygon. It can be understood that H1 and H2 constitute the total lateral dimension of the first optical element 40, the intersection of H3 and H4 is the center of the first reflecting surface 43, and the intersection of H3 and H5 is the center R2 of the second reflecting surface 44. The light-receiving surface 42 is eccentrically positioned relative to the second reflecting surface 44, and the center of gravity R1 of the light-receiving surface 42 is eccentrically positioned relative to the center R2 of the second reflecting surface 44 at a preset distance. The eccentric distance can be 0.1mm, 0.15mm, 0.2mm, etc. The straight edge chamfer 421 and / or the eccentric setting are beneficial for identifying the orientation and direction of the first optical element 40, that is, identifying the orientation of the orthographic projection surface of the first optical element 40. For example, it can identify the first end or the second end of the first optical element 40; or it can identify that the first optical element 40 has been rotated. For example, the first optical element 40 can be positioned or its orientation detected and identified by machine vision during the assembly process. This is beneficial for the positioning and installation of the optical module 42 relative to the microdisplay 31, making the overall assembly more accurate.

[0099] In some embodiments, the light-incoming surface 42, the first reflecting surface 43, the second reflecting surface 44, and the light-emitting surface 45 comprise freeform surfaces generated by the same continuous function, meaning they can share a mold or mask material, effectively reducing the manufacturing cost of the first optical element 40. The outer contour of the projected area of ​​the first optical element 40 relative to the microdisplay assembly 30 includes a circle or an ellipse. It is understood that in some embodiments, the light-incoming surface 42 and the first reflecting surface 43 may be elliptical; or, the light-emitting surface 45 may also be elliptical, wherein the longer side of the ellipse corresponds to the lateral field of view of the human eye, and the shorter side corresponds to the vertical field of view of the human eye. Considering that the lateral field of view of the human eye is greater than the vertical field of view, an elliptical outer contour design is more likely to meet the viewing needs of the human eye.

[0100] Other designs or constructions of the first optical element 40 can be found in the descriptions of related embodiments in prior Chinese applications numbered 2023111912240, 2024205421010, 2023115809662 or 2023115822046.

[0101] In some embodiments, in conjunction with reference Figure 9-12 The near-eye display module 100 may further include a sleeve 46, and a flange 22 is provided on the first housing 20. The first optical element 40 is located within the sleeve 46. The sleeve 46 is configured to allow movable connection relative to the flange 22 and to adjust the distance of the first optical element 40 relative to the microdisplay assembly 30. It is understood that the sleeve 46 may have an internal thread 462, and the flange 22 may have an external thread, both threadedly connected to each other to achieve distance adjustment of the first optical element 40 relative to the microdisplay 31. In other embodiments, the sleeve 46 is configured to be releasably connected to the flange 22. Releasability can be provided by one or more mechanisms of various kinds to secure the components to each other. For example, mechanisms such as locks, latches, snaps, sliders, channels, screws, buckles, threads, magnets, pins, interference (e.g., friction) fits, rolling mills, snap pins, fused materials, fabrics, knitted fabrics, braided fabrics, hook and loop fasteners, and / or combinations thereof may be included to couple the sleeve 46 and / or secure the first housing 20 together. The sleeve 46 and the first housing 20 can remain fixed to each other until an optional release mechanism is actuated, such as by a user's active operation of squeezing, pressing, rotating, fitting, locking, or snapping. In some embodiments, the first housing 20 and the sleeve 46 have, for example, Figure 1 , 3 The example shows a closed connection state. The first optical element 40 can display digital content with different clarity at different positions relative to the microdisplay 31, and the distance of the first optical element 40 can be adjusted according to the visual impairment of different people.

[0102] In some embodiments, such as Figure 9A second optical element 70 may also be provided on the sleeve 46. The second optical element can be fixed to the sleeve 46 by means of snap-fit, adhesive, or threaded connection. The second optical element 70 is located on the light-emitting side of the first optical element 40. The second optical element 70 is configured to provide the desired visual correction. The correction of the second optical element 70 can be spherical, aspherical, toroidal, cylindrical, monocular, multifocal, progressive, and / or adjustable, for example, for correction of specific eyes or visual impairments such as myopia, hyperopia, and color blindness. Various correction combinations of the second optical element 70 can be provided with different lenses or lens elements. For example, each of any given lens or lens element can have a known type of correction parameter based on the design identifier. Corresponding identifiers, such as those based on product inventory, can be assigned for reference and to facilitate selection for different visual users. In some embodiments, the second optical element 70 may include concave lenses, convex lenses, convex cylindrical lenses, or other lenses with different refractive powers. The second optical element 70 can correct the vision of the light projected from the first optical element 40 so that a user with visual impairment can clearly see the image content from the microdisplay 30. In other embodiments, the first housing 20 and the sleeve 46 can be separated separately, wherein the second optical element 70 can be held fixed to the sleeve 46, thereby allowing the sleeve 46 containing different vision-correcting second optical elements 70 to be replaced according to the user's different vision.

[0103] In some embodiments, the second optical element 70 can provide the desired optical effect or optical crosstalk. For example, the second optical element may include one or more attenuators, diffusers, filters, polarizers, prisms, beam splitters, diffraction gratings, mirrors, and / or windows. In some embodiments, for users without visual impairments, correction may not be required, and the second optical element may be a plano lens or a zero-power lens, providing protection only for the first optical element 40 and reducing wear on the first optical element 40.

[0104] The projection area of ​​the second optical element in the first direction is greater than or equal to the projection area of ​​the first optical element 40 in the first direction, ensuring that the light from the microdisplay 30 can be fully corrected. The sleeve 46 is configured to be releasably connected to the first housing 20, allowing different users to replace different second optical elements 70 according to their own vision needs, so that users with visual impairments can still see the full and clear digital content from the microdisplay 30.

[0105] In some embodiments, the projected area of ​​the second optical element 70 in the first direction A may be 15 mm². 2 -45 mm 2 (square millimeters), for example, 15mm 2 17mm 2 19mm2 20mm 2 36mm 2 40mm 2 45mm 2 The projected area of ​​the first optical element 40 in the first direction A is 10 mm². 2 -20mm 2 For example, 10mm 2 12mm 2 14mm 2 17mm 2 19mm 2 20mm 2 It is understandable that the projected area of ​​the second optical element 70 needs to always be greater than or equal to the projected area of ​​the first optical element 40.

[0106] In some embodiments, the projected areas of the first housing 20 and the sleeve 46 in the first direction A are each no greater than 60 mm². 2 It is understandable that, for example, the projected areas of the first housing 20 and the sleeve 46 can be 50 mm². 2 54mm 2 55mm 2 60mm 2 In some embodiments, for example Figure 1-3 The projected area of ​​sleeve 46 in the first direction A is larger than the projected area of ​​second housing 20; in other embodiments, for example Figure 6-9 As shown, the projected area of ​​the sleeve 46 in the first direction A is larger than the projected area of ​​the first optical element 40 but smaller than the projected area of ​​the first housing 20. The smaller projected areas of the first housing 20 and the sleeve 46 result in a smaller volume and weight, facilitating integration into the near-eye display device 100. Compared to existing AR or VR near-eye devices, the module and device of this application are lighter in overall volume and weight, making them more suitable for prolonged wear. Furthermore, they can be cleverly integrated with existing near-eye glasses, far-eye glasses, sunglasses, protective glasses, or smart glasses, without causing excessive weight or size, and are not visually obtrusive or obstructing the user's normal field of vision.

[0107] The first housing 20, sleeve 46, first optical element 40, and second optical element 70 can be circular, elliptical, or other various shapes. In some embodiments, the materials of the first housing 20 and sleeve 46 are at least partially different; for example, the hardness (rigidity) of the first housing 20 is greater than that of the sleeve 46. The first housing 20 can be made of metal, plastic, etc., while the sleeve 46 can be made of an elastic or flexible material, such as silicone, rubber, or elastic plastic. The first housing 20 and sleeve 46 are configured to be elastically connected. In other embodiments, a portion of the first housing 20 may have a hardness greater than a portion of the sleeve 46; this portion may be the part in contact with the first housing 20. The first housing 20 and the sleeve 46 can be elastically connected; in other embodiments, the first housing 20 and the sleeve 46 can also be elastically snapped together, that is, the sleeve 46 snaps onto the first housing 20, causing at least partial deformation or elastic deformation of the first housing 20 or the sleeve 46; or when the two are threadedly connected, the first housing 20 or the sleeve 46 undergoes at least partial deformation or elastic deformation. In other embodiments, for example, an elastic ring (or silicone ring, etc.) may be located in the gap of the snap-fit ​​or threaded connection, or the end of the sleeve 46 may abut against a flexible plate (or elastic plate or silicone plate). Therefore, different users can use different lenses or lenses in the second optical element 70 as needed, and / or not use the second optical element 70 containing lenses or lenses.

[0108] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A near-eye display device (200), characterized by, The application relates to a near-eye display device. The application comprises: a frame (10) having a near-eye side (102) and an ambient side (103); a near-eye display module (100) arranged in the frame (10) for generating a digital image; a second optical element (70) arranged on the light-out side of the near-eye display module (100) and facing the near-eye side; the second optical element (70) comprises a first active lens (710) and a first conductive element (720) electrically coupled to each other, a third optical element (105) connected to the frame (10) and facing the near-eye side (102); the third optical element (105) and the second optical element (70) are arranged at intervals; the third optical element (105) comprises a second active lens (106) and a second conductive element (107) electrically coupled to each other, a processor (2301) electrically connected to the first conductive element (720), the second conductive element (107) and the near-eye display module (100) respectively; 2. The near-to-eye display device (200) of claim 1, wherein, wherein the processor (2301) is configured to control the curvature change of the first active lens (710) through the first conductive element (720) and clearly project the digital image for the user without projecting the ambient image; the processor (2301) is further configured to control the curvature change of the second active lens (106) through the second conductive element (107) and clearly project the ambient image for the user without projecting the digital image. The near-eye display module (100) further comprises: a first housing (20) provided with a first accommodating cavity (21); a micro display assembly (30) arranged in the first accommodating cavity (21) for generating light and forming the digital image; a first optical element (40) arranged on the light-out side of the micro display assembly (30); a first active lens (710) located on the light-out side of the first optical element (40), and the size of the first active lens (710) is greater than that of the first optical element (40); the light of the micro display assembly (30) enters the first end of the first optical element (40) and is emitted from the second end of the first optical element (40) and passes through the first active lens (710) to project the digital image to the near-eye side (102); the micro display assembly (30) is in the projection area of the frame (10), the ambient light path from the ambient side (103) to the near-eye side (102) is blocked by the frame (10) and does not enter the first active lens (710), and the light path of the micro display assembly (30) is not blocked by the frame (10); the frame (10) is arranged at least partially along the outer periphery of the second active lens (106), and the ambient light path from the ambient side (103) to the near-eye side (102) is not blocked by the frame (10) and passes through the second active lens (106) and projects the ambient image to the near-eye side (102).

3. The near-to-eye display device (200) of claim 2, wherein, The first active lens (710) has a smaller area than the second active lens (106) in a projection direction from the environment side (103) to the near-eye side (102), and the first conductive member (720) has a smaller size than the second conductive member (107); The first active lens (710) is arranged protruding relative to the second active lens (106) in a direction from the environment side (103) to the near-eye side (102).

4. The near-to-eye display device (200) of claim 1, wherein, The near-eye display device (200) further comprises an operation unit (2307) electrically connected to the processor (2301), and the processor (2301) is configured to receive operation synchronization control of the operation unit (2307) to control the curvature change of the first active lens (710) and the curvature change of the second active lens (106).

5. The near-to-eye display device (200) of claim 1, wherein, The near-eye display device (200) further comprises a first operation unit (2311) and a second operation unit (2312), and the first operation unit (2311) and the second operation unit (2312) are respectively electrically connected to the processor (2301), the first operation unit (2311) controls the curvature change of the first active lens (710), The second operation unit (2312) controls the curvature change of the second active lens (106); The curvature change range of the first active lens (710) controlled by the first operation unit (2311) is smaller than the curvature change range of the second active lens (106) controlled by the second operation unit (2312).

6. The near-to-eye display device (200) of claim 2, wherein, The near-eye display device (200) further comprises a first lens leg (220), a second lens leg (260), a first lead wire (250), a second lead wire (252), a circuit board (230), and a battery (232), The battery (232) is located in the second lens leg (260), and the battery (232) is electrically connected to the circuit board (230) through the second lead wire (252); The circuit board (230) is electrically connected to the micro display assembly (30) through the first lead wire (250), the processor (2301) is electrically connected to the circuit board (230) and located in the first lens leg (220), the length of the first lead wire (250) is smaller than the length of the second lead wire (252), the near-eye display module (100) is configured to allow movement on the frame body (10), the frame body (10) is provided with a first cavity (101), the first lead wire (250) moves at least partially in the first cavity (101) when the near-eye display module (100) moves relative to the frame body (10), the second lead wire (252) is located in the frame body (10) and remains fixed, and the first lead wire (250) and the second lead wire (252) are electrically insulated from each other in the overlapping part in the extension direction.

7. The near-to-eye display device (200) of claim 1, wherein, The shape of the first conductive part (720) and the second conductive part (107) comprises a ring-shaped coil, the circumference of the first conductive part (720) is smaller than the circumference of the second conductive part (107), the first active lens (710) and the second active lens (106) comprise an electro-active lens, the ring-shaped coil surrounds the electro-active lens, and the processor controls the coil voltage to change the curvature of the electro-active lens.

8. The near-to-eye display device (200) of claim 1, wherein, The first active lens (710) and the second active lens (106) comprise: a substrate (711); an electro-active lens disposed opposite to the substrate (711); a filling material (713) located between the substrate (711) and the electro-active lens, the filling material (713) comprising at least one of a polymer, a silicon compound or a liquid lens; The first conductive part (720) and the second conductive part (107) comprise an electric driver (714), the electric driver (714) is electrically connected with the electro-active lens, and the processor is configured to control the voltage of the electric driver (714) applied to the electro-active lens to change the bending shape of the electro-active lens.

9. The near-to-eye display device (200) of claim 1, wherein, The second optical element (70) comprises a first passive lens (730) disposed adjacent to the first active lens (710), The third optical element (105) further comprises a second passive lens (108) disposed adjacent to the second active lens (106), the first passive lens (730) and the second passive lens (108) comprise an optically transparent deformable layer, and the size of the first passive lens (730) is smaller than the size of the second passive lens (108).

10. The near-to-eye display device (200) of claim 1, wherein, The second optical element (70) comprises a first metasurface structure (740) disposed adjacent to the first active lens (710); The third optical element (105) further comprises a second metasurface structure (109) disposed adjacent to the second active lens (106), and the arrangement area of the first metasurface structure (740) is smaller than the arrangement area of the second metasurface structure (109).

11. The near-to-eye display device (200) of claim 6, wherein, The near-eye display module (100) is provided with a first sliding part (50), and the frame body (10) is provided with a second sliding part (12) matched with the first sliding part (50), the near-eye display module (100) is configured to move towards the first temple (220) direction to bend the first lead (250), and the near-eye display module (100) is further configured to move away from the first temple (220) direction to unfold the first lead (250); A damping rotation mechanism (60) is located between the first shell (20) and the first sliding part (50), the damping rotation mechanism (60) is rotationally connected with the first shell (20), and the first shell (20) is configured to allow the damping rotation of the second optical element (70) relative to the frame body (10) through the damping rotation mechanism (60) and keep the second optical element (70) at a desired fixed angle relative to the frame body (10).

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