Near-to-eye display device and intelligent wearable equipment

Abstract

The utility model relates to a near-to-eye display device and intelligent wearable equipment, the near-to-eye display device comprises an optical display module (1), the optical display module comprises a pair of optical lens assemblies (11), and each optical lens assembly is provided with a display (12); the driving component (2) comprises a display driver, the driving component is connected with the display (12), and when the near-eye display device works, the driving component (2) is connected with the far-end equipment (3) for signal transmission; and the connecting component is used for connecting the optical display module (1) to the glasses (4). The near-to-eye display device is suitable for a user wearing prescription glasses in daily life, is convenient to fold and carry, and is high in use comfort.

Description

Technical Field

[0001] This utility model belongs to the field of display technology, specifically, it relates to a near-eye display device and a smart wearable device. Background Technology

[0002] In recent years, smartphones and laptops have become widely used. When using these products, users often spend long periods looking down at the screen, leading to neck fatigue and discomfort. Existing technology attempts to address this problem through near-eye display devices. Near-eye display devices project a miniature, high-resolution screen onto the user's eyes using an optical module, achieving a near-eye display effect and correcting the user's posture while viewing the screen. Typical near-eye display devices are glasses-style, such as Xreal and CoreVision.

[0003] The limitations of existing solutions are twofold: First, the near-eye display device is made in the form of eyeglasses, which is inconvenient for users who regularly wear prescription glasses (such as myopia glasses or hyperopia glasses). Second, integrating electronic components such as drive components and power supply components into the glasses results in a larger product size and weight, and also causes significant heat dissipation during continuous operation, affecting the product's aesthetics and user comfort. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a near-eye display device and a smart wearable device.

[0005] To achieve the above objectives, this utility model provides a near-eye display device, comprising:

[0006] An optical display module, comprising a pair of optical lens assemblies, each of which is equipped with a display;

[0007] The driving component includes a display driver and is connected to the display. When the near-eye display device is in operation, the driving component is connected to a remote device for signal transmission.

[0008] A connecting component for detachably mounting the optical display module to the glasses.

[0009] Preferably, the display driver includes a pair of driving printed circuit boards, which are respectively disposed on both sides of the display along with the optical lens assembly.

[0010] Preferably, a pair of driving printed circuit boards are respectively connected to a first interface via a first flexible ribbon cable. The first interface is located between a pair of optical lens assemblies. The first interface is connected to a second interface, which is used to connect to the remote device.

[0011] Preferably, the first interface and the second interface are Type-C interfaces.

[0012] Preferably, the display driver includes a driving printed circuit board, and the driving printed circuit board is disposed away from the optical lens assembly, and the display of the optical lens assembly is connected to the driving component via a flexible printed circuit board.

[0013] Preferably, the flexible printed circuit board is connected to the display via a third interface; when the near-eye display device is working, the driving printed circuit board is connected to the remote device via a fourth interface; and / or

[0014] A pair of optical lens assemblies are connected by a flexible component.

[0015] Preferably, the fourth interface and the third interface are Type-C interfaces.

[0016] Preferably, the connecting component is a block of ferromagnetic material or an elastic clip.

[0017] Preferably, the optical display module further includes a housing, the housing having a lens receiving cavity for accommodating the optical lens assembly; the edge of the housing has an outwardly protruding portion, the protruding portion having a recessed magnetic component receiving cavity, the connecting component being a magnet, and the magnet being disposed within the magnetic component receiving cavity;

[0018] Alternatively, the connecting component may be an elastic clip disposed between a pair of optical lens assemblies.

[0019] Preferably, the near-eye display device further includes a lens frame, the optical display module is mounted on the lens frame, magnetic component receiving cavities are provided on both sides of the lens frame, the connecting component is a magnet, and the magnet is disposed in the magnetic component receiving cavity.

[0020] Preferably, the frame has a clearance groove in the middle; and / or

[0021] The frame also has slots on both sides for connecting the temples of the glasses.

[0022] Preferably, the drive component further includes a power management unit and an interface controller.

[0023] Preferably, the remote device is a mobile phone, tablet computer, or PC.

[0024] Preferably, the display is located at the front end of the optical lens assembly, and the display is an OLED display screen.

[0025] This utility model also provides a smart wearable device, including the aforementioned near-eye display device.

[0026] The beneficial effects of this utility model are as follows:

[0027] 1. The near-eye display device does not have a complete frame like similar products. Instead, it is detachably installed on the user's glasses via connecting parts, making it more suitable for users who wear prescription glasses daily.

[0028] 2. The optical lens assembly adopts the Pancake optical solution, which is thinner and effectively reduces the overall size and weight of the device, improving user comfort and visual experience.

[0029] 3. The driving component is located away from the optical lens assembly, and the display is connected to the driving component through a flexible printed circuit board, thereby reducing the weight of the wearing part, achieving a slimmer and more beautiful shape, and preventing the heat generated by the driving printed circuit board during operation from dissipating to the user's eyes, thus improving the user's comfort.

[0030] 4. The display uses a miniature OLED screen, combined with an optical lens assembly, to provide clear, high-resolution images with excellent color reproduction and contrast, suitable for viewing text, pictures and videos.

[0031] 5. The adoption of a Type-C interface ensures compatibility with various external devices, enhancing the versatility and practicality of near-eye display devices.

[0032] 6. The device has a compact overall structure, is foldable, easy to carry, and convenient to use.

[0033] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0034] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0035] Figure 1 A schematic diagram of the structure of a near-eye display device according to a first embodiment of the present invention is shown.

[0036] Figure 2 A schematic diagram of the structure of the optical display module of the near-eye display device according to the first embodiment of the present invention is shown.

[0037] Figure 3 A schematic diagram of the housing of a near-eye display device according to a first embodiment of the present invention is shown.

[0038] Figure 4 A schematic diagram of the structure of a near-eye display device according to a second embodiment of the present invention is shown.

[0039] Figure 5 A schematic diagram of the structure of a near-eye display device according to a third embodiment of the present invention is shown.

[0040] Explanation of reference numerals in the attached figures

[0041] 1 Optical display module; 11 Optical lens assembly; 12 Display; 13 Magnet; 14 Housing; 15 Lens housing cavity; 16 Magnetic component housing cavity; 17 Protrusion; 2 Driving component; 21 First interface; 22 Second interface; 23 Second flexible ribbon cable; 24 First flexible ribbon cable; 25 Fourth interface; 26 Flexible printed circuit board; 27 Third interface; 3 Remote device; 4 Lens frame; 41 Clearance groove. Detailed Implementation

[0042] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0043] Figure 1 A schematic diagram of the structure of a near-eye display device according to a first embodiment of the present invention is shown. Figure 2 A schematic diagram of the optical display module of a near-eye display device is shown. Figure 3 A schematic diagram of the casing of a near-eye display device is shown. Figures 1 to 3 As shown, the near-eye display device includes:

[0044] Optical display module 1, the optical display module includes a pair of optical lens assemblies 11, each optical lens assembly is provided with a display 12;

[0045] The driving component 2 includes a display driver and is connected to the display 12. When the near-eye display device is working, the driving component 2 is connected to the remote device 3 for signal transmission.

[0046] A connecting component for detachably mounting the optical display module 1 to the glasses.

[0047] In this embodiment, the optical lens assembly adopts the Pancake optical scheme. The Pancake optical scheme is designed using a folded optical path. By reflecting light multiple times through multiple semi-transparent mirrors, the image light source of the display is magnified within a limited distance and directed into the human eye to form an image. This can significantly reduce the physical thickness of the optical module, improve the clarity of the edge of the field of view, reduce image distortion and glare, and improve the overall image quality. For example, in the paper "Design Method of Ultra-Short Focal Length Polarization Reflective Virtual Reality Lens" by Cheng Dewen et al. (Acta Optica Sinica, 43(15): 1522001, 2023), a scheme is disclosed that uses a three-element lens to reflect light multiple times to achieve the effect of folding the optical path and reducing the physical thickness. In this embodiment, the size of the optical lens assembly can reach a diameter of about 20 mm and a thickness of about 9 mm, achieving a field of view (FOV) of about 50 degrees while maintaining a compact shape. This compact optical lens assembly solves the problem of the large self-weight of traditional optical systems and can provide a virtual large screen experience without increasing weight and size.

[0048] In this embodiment, each optical lens assembly 11 has a display 12 at its front end, which is a miniature OLED (Organic Light Emitting Diode) display. Here, the front end refers to the end furthest from the user's eyes when worn, and correspondingly, the rear end refers to the end closest to the user's eyes. OLED display technology ensures high contrast, deep blacks, and rich colors, enhancing the overall visual experience. This embodiment uses a 0.49-inch miniature OLED display, which can project high-resolution images into the user's eyes. The small size of the display helps to improve the compactness of the device while ensuring sufficient pixel density to provide clear and detailed images.

[0049] The driving component 2 includes a pair of driving printed circuit boards, which are respectively disposed on both sides of the display 12 along with the optical lens assembly 11. Figure 2 As shown. The driving components include necessary electronic circuits, such as display drivers, power management units, and interface controllers, all of which can be integrated into the driving printed circuit board. In this embodiment, a pair of driving printed circuit boards are respectively connected to a first interface 21 via a first flexible ribbon cable 24. The first interface 21 is located between a pair of optical lens assemblies 11. The first interface 21 is connected to a second interface 22 via a second flexible ribbon cable 23. The second interface 22 is used to connect to a remote device. With this arrangement, signals can be transmitted sequentially through the second interface, the second flexible ribbon cable, the first interface, and the first flexible ribbon cable to the driving printed circuit board, and then displayed on the display.

[0050] Both the first interface 21 and the second interface 22 are Type-C interfaces. The near-eye display device connects to the remote device via the Type-C interface. The Type-C interface provides universal compatibility and plug-and-play functionality, allowing users to experience large-screen virtual displays without additional hardware or complex setup procedures. Furthermore, the Type-C interface supports high-speed data transmission and power delivery, ensuring seamless operation of the device. In other embodiments, the first and second interfaces can also be other general-purpose interfaces that meet performance requirements.

[0051] The connecting component is a block of ferromagnetic material, such as iron, cobalt, nickel, and their alloys. In this embodiment, the connecting component is a magnet.

[0052] like Figure 3 As shown, the optical display module also includes a housing 14, within which a lens receiving cavity 15 is provided for accommodating the optical lens assembly 11. The housing can accommodate and stably fix the optical lens assembly 11. For clarity, Figure 3 Only the portion of the housing 14 accommodating one optical lens assembly 11 is shown, and other components are omitted. In this embodiment, the edge of the housing 14 has an outwardly protruding portion 17, and a magnetic component receiving cavity 16 is recessed on the protruding portion 17. The connecting component is a magnet 13, which is disposed within the magnetic component receiving cavity 16. The outward protrusion refers to the portion protruding towards both sides of the glasses (i.e., towards the temples) when the near-eye display device is mounted on eyeglasses.

[0053] Currently, there are various magnetic eyeglasses on the market, which have magnetic components at the temple ends, allowing users to magnetically attach various lenses, such as sunglasses lenses and prescription lenses, to the eyeglasses. The near-eye display device of this embodiment has a magnetic component receiving cavity on the edge of the housing, with a magnet placed within it. This allows the near-eye display device to be attached to existing magnetic eyeglasses for user convenience. Preferably, the shape of the housing is adapted to the optical lens assembly, and the magnetic component receiving cavity is located on the outer edge of the housing (i.e., the side closest to the temple of the magnetic eyeglasses after installation), allowing it to be attached to the magnetic components of the magnetic eyeglasses.

[0054] In other embodiments, the connecting component can be an elastic clip disposed between a pair of optical lens assemblies 11, which can also be used to connect the optical display module to the frame of the glasses.

[0055] The housing 14 can be made of high-strength plastic, composite material or lightweight metal (such as magnesium-aluminum alloy) to give the near-eye display device the required strength and weight.

[0056] In this embodiment, the remote device 3 is a smartphone. Obviously, the remote device 3 can also be other processing devices such as tablets or PCs. The remote device provides the images, videos, and other content displayed on the screen.

[0057] This near-eye display device does not have a frame like those found in other products. Instead, it connects directly to the user's glasses via connecting components, making it more suitable for users who wear prescription glasses daily. The optical lens assembly uses a pancake optical solution, resulting in a thinner profile and effectively reducing the overall size and weight of the device, thus improving user comfort. A pair of optical lens assemblies are connected to the interface via flexible cables, making the entire device foldable and easy to carry. A Type-C interface provides a universal data and power interface, enabling seamless connection between the near-eye display device and various external devices (such as smartphones, tablets, and laptops). This plug-and-play feature simplifies user interaction and eliminates the need for additional software or complex setup procedures.

[0058] Figure 4 A schematic diagram of a near-eye display device according to a second embodiment of the present invention is shown. Figure 4 As shown, the near-eye display device includes:

[0059] Optical display module 1, the optical display module includes a pair of optical lens assemblies 11, each optical lens assembly is provided with a display 12;

[0060] The driving component 2 includes a display driver and is connected to the display 12. When the near-eye display device is working, the driving component 2 is connected to the remote device 3 for signal transmission.

[0061] A connecting component for detachably mounting the optical display module 1 to the glasses.

[0062] Similar to the first embodiment, the optical lens assembly adopts the Pancake optical solution, and the display is a miniature OLED display.

[0063] The main difference between the near-eye display device of the second embodiment and the first embodiment is that the driving component 2 includes a driving printed circuit board, and the driving printed circuit board is disposed away from the optical lens assembly 11. The display 12 of the optical lens assembly is connected to the driving component 2 through a flexible printed circuit board 26.

[0064] The flexible printed circuit board 26 is connected to the display 12 via the third interface 27. When the near-eye display device is working, the driving printed circuit board is connected to the remote device 3 via the fourth interface 25. Both the fourth and third interfaces are Type-C interfaces. With this configuration, signals can be transmitted sequentially via the fourth interface, the driving printed circuit board, the flexible printed circuit board, and the third interface to the display for display.

[0065] exist Figure 4 In the illustrated embodiment, a flexible printed circuit board is connected to both displays via a third interface 27 to reduce the amount of flexible printed circuit board used. In other embodiments, the two displays may also be connected to the driving component via separate flexible printed circuit boards.

[0066] In this embodiment, the drive printed circuit board is positioned away from the optical lens assembly, bringing it closer to the remote device. This reduces the weight of the wearing part, resulting in a slimmer and more aesthetically pleasing shape. It also prevents the heat generated by the drive printed circuit board during operation from dissipating into the user's eyes, thus improving user comfort.

[0067] Flexible printed circuit boards (FPCs) connect the display to the driving printed circuit board. The selected FPC needs to meet data transmission rate and power requirements, maintain signal integrity, power the display, and have sufficient length and flexibility to facilitate folding and portability of the entire device. In this embodiment, the FPC is made of highly flexible and durable materials, such as a polyimide substrate with annealed copper conductors, capable of withstanding repeated folding and bending without degrading electrical performance. The length of the FPC is optimized to approximately 1 meter.

[0068] Preferably, the pair of optical lens assemblies 11 can also be connected by a flexible component. The flexible component can be a rubber sheet or a similar component.

[0069] The optical display module of this embodiment may also include a housing as described in the first embodiment, with a lens receiving cavity inside the housing for accommodating the optical lens assembly. The housing can accommodate and stably fix the optical lens assembly. The edge of the housing has an outwardly protruding portion, and a magnetic component receiving cavity is recessed on the protrusion. The connecting component is a magnet, which is disposed in the magnetic component receiving cavity to attract and attach to existing magnetic eyeglasses on the market.

[0070] This near-eye display device does not have a frame like those found in other products. Instead, it connects directly to the user's glasses via a connecting component, making it more suitable for users who wear prescription glasses daily. The optical lens assembly uses a pancake optical solution, resulting in a thinner profile and effectively reducing the overall size and weight of the device, thus improving user comfort. The drive component is positioned away from the optical lens assembly, and the display is connected to the drive component via a flexible printed circuit board. This reduces the weight of the wearing component, resulting in a slimmer and more aesthetically pleasing shape. It also prevents heat generated during the operation of the drive printed circuit board from dissipating to the user's eyes, further enhancing user comfort. A pair of optical lens assemblies are connected by a flexible component, making the entire device foldable and easy to carry. A Type-C interface provides a universal data and power interface, enabling the near-eye display device to seamlessly connect to various external devices (such as smartphones, tablets, and laptops). The plug-and-play feature simplifies user interaction and eliminates the need for additional software or complex setup procedures.

[0071] Figure 5 A schematic diagram of a near-eye display device according to a third embodiment of the present invention is shown. Figure 5 As shown, the difference between the near-eye display device of the third embodiment and the first and second embodiments is that the near-eye display device does not have a housing for accommodating the optical lens assembly, but instead includes a frame 4, with the optical display module 1 mounted on the frame 4. Magnetic component receiving cavities 16 are provided on both sides of the frame 4, and the connecting component is a magnet (not shown), which is located within the magnetic component receiving cavity 16. In use, the frame 4 is simply attached to the user's magnetic glasses using the magnets, meeting the needs of users who wear prescription glasses daily. The frame 4 can be made of high-strength plastic, composite materials, or lightweight metals (such as magnesium-aluminum alloy).

[0072] The frame 4 can also have slots on both sides for connecting the temples of the glasses. This allows the near-eye display device to be connected to the temples and worn directly. Figure 5 As shown, the frame 4 may be provided with a relief groove 41 in the middle. When the frame 4 is installed on the prescription glasses worn by the user, the relief groove 41 can avoid the nose pads and other structures in the middle of the prescription glasses.

[0073] For clarity, Figure 5 The driving components, flexible cables, flexible printed circuit boards, interfaces, and other components in the first and second embodiments are omitted here. These components are the same as those in the first or second embodiments and will not be described again here.

[0074] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A near-eye display device, comprising: The application relates to a near-eye display device. The near-eye display device comprises: an optical display module (1) comprising a pair of optical lens assemblies (11), each of which is provided with a display (12); a driving component (2) comprising a display driver, and the driving component is connected with the display (12) when the near-eye display device works, and the driving component (2) is connected with a remote device (3) for signal transmission; 2. The near-eye display device of claim 1, wherein, a connecting component for detachably mounting the optical display module (1) on glasses.

3. The near-eye display device of claim 2, wherein, The display driver comprises a pair of driving printed circuit boards, and the driving printed circuit boards are arranged on both sides of the display (12) respectively.

4. The near-eye display device of claim 1, wherein, The driving printed circuit boards are connected with a first interface (21) through first flexible flat cables (24), the first interface (21) is arranged between the optical lens assemblies (11), the first interface (21) is connected with a second interface (22) through a second flexible flat cable (23), and the second interface (22) is used for connecting the remote device.

5. The near-eye display device of claim 4, wherein, The display driver comprises a driving printed circuit board, and the driving printed circuit board is arranged away from the optical lens assemblies (11), and the display (12) of the optical lens assembly is connected with the driving component (2) through a flexible printed circuit board (26). The flexible printed circuit board (26) is connected with the display (12) through a third interface (27), the driving printed circuit board is connected with the remote device (3) through a fourth interface (25) when the near-eye display device works; and / or 6. The near-eye display device of claim 1, wherein, The optical lens assemblies (11) are connected through a flexible component.

7. The near-eye display apparatus of claim 6, wherein, The connecting component is a ferromagnetic material block or an elastic clamp. The optical display module further comprises a shell (14), the shell is provided with a lens accommodating cavity (15) for accommodating the optical lens assemblies (11), the edge of the shell (14) is provided with a protruding part (17) protruding outward, the protruding part (17) is concavely provided with a magnetic component accommodating cavity (16), the connecting component is a magnet (13), and the magnet is arranged in the magnetic component accommodating cavity (16); 8. The near-eye display apparatus of claim 6, wherein, Alternatively, the connecting component is an elastic clamp, and the elastic clamp is arranged between the optical lens assemblies (11).

9. The near-eye display device of claim 8, wherein, Further comprising a spectacle frame (4), the optical display module (1) is mounted on the spectacle frame (4), the two sides of the spectacle frame (4) are provided with magnetic component accommodating cavities (16), the connecting component is a magnet, and the magnet is arranged in the magnetic component accommodating cavities (16). The middle part of the spectacle frame (4) is provided with an avoiding groove (41); and / or 10. The near-eye display device of claim 1, wherein, The two sides of the spectacle frame (4) are further provided with sockets for connecting spectacle legs. The driving component (2) further comprises a power management unit and an interface controller; and / or 11. A smart wearable device, characterized by, The display (12) is arranged at the front end of the optical lens assembly (11), and the display (12) is an OLED display screen. The application further relates to a near-eye display device according to any one of claims 1 to 10. The application further relates to a near-eye display device according to any one of claims 1 to 10.

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