Near-to-eye display device

Abstract

The invention provides a near-to-eye display device. The near-to-eye display device comprises a frame, a nose bracket and at least one low-light machine. The frame is used for fixing at least one waveguide sheet. The nose bracket is connected to the frame, and the nose bracket is used for being hung on the two sides of the nose bridge bone of a user. The at least one low-light machine is fixed on the nose bracket, and the at least one low-light machine is used for emitting image light towards the at least one waveguide sheet, so that the image light enters the eyes of a user.

Description

Technical Field

[0001] The present application relates to the field of augmented reality technology, and in particular to a near-eye display device. Background Art

[0002] With the development of science and technology, augmented reality (AR) technology is applied to various fields, such as games, education, medical care, retail, etc. In order to provide a richer and more personalized interactive experience, AR head-mounted display devices are developing towards lighter and more comfortable. The common AR head-mounted display devices on the market mainly use two display optical machines to meet the imaging needs of the left and right eyes.

[0003] However, the two display light machines of the common AR head-mounted display devices on the market are mainly fixed on the temples on both sides, which not only increases the volume of the AR head-mounted display device, but also when the user wears the above-mentioned AR head-mounted display device, the two display light machines located on the temples on both sides will affect the user's comfort when wearing it, thereby affecting the lightweight level of the AR head-mounted display device. Summary of the invention

[0004] The present application provides a near-eye display device, comprising: A frame for fixing at least one waveguide; A nose bracket connected to the frame, the nose bracket being used to rest against both sides of the bridge of the nose of the user; and At least one micro-optical machine is fixed on the nose bracket, and the at least one micro-optical machine is used to emit image light toward the at least one waveguide plate so that the image light is incident on the user's eyes.

[0005] The near-eye display device provided in the embodiment of the present application is provided with a nose bracket hung on both sides of the user's nose bridge, at least one micro-light engine is fixed on the nose bracket, and image light is emitted toward the at least one waveguide plate so that the image light is incident on the user's eyes. The space from the frame to the user's nose bridge can be fully utilized, which is beneficial to reducing the overall volume of the near-eye display device. Compared with fixing the micro-light engine on both sides of the temples, it is beneficial to reduce the discomfort of the user when wearing the device, and is beneficial to improving the wearing comfort of the user, thereby facilitating improving the lightweight level of the near-eye display device.

[0006] In one embodiment, the near-eye display device includes two micro-light engines, namely a first micro-light engine and a second micro-light engine. The direction in which the first micro-light engine emits the image light is the same as the direction in which the second micro-light engine emits the image light.

[0007] In one embodiment, the nose pad includes a first nose pad portion and a second nose pad portion for resting on different sides of the user's nose bridge, the first nose pad portion and the second nose pad portion both include a contact end for contacting the user's nose bridge and a fixed end connected to the contact end, and the two fixed ends are used to fix the first micro-light machine and the second micro-light machine, respectively.

[0008] In one embodiment, each of the fixing ends is provided with a fixing through hole, and the micro-optical machine is fixed in the fixing through hole.

[0009] In one embodiment, the nose pad further includes two first connecting parts, the contact end and the fixed end of the first nose pad part and the second nose pad part are respectively connected to two sides of one of the first connecting parts, and the first nose pad part and the second nose pad part are respectively connected to the frame through one of the first connecting parts.

[0010] In one embodiment, the first nose pad portion, the second nose pad portion and the first connecting portion are an integrally formed structure with the frame.

[0011] In one embodiment, the nose pad further includes a second connecting portion connecting the first nose pad portion and the second nose pad portion, and the nose pad is detachably fixed to the frame via the second connecting portion.

[0012] In one embodiment, the second connecting portion and the frame are screwed together.

[0013] In one embodiment, the near-eye display device further includes a driving module, and the driving module is electrically connected to the at least one micro-optical machine to drive the micro-optical machine to emit image light.

[0014] In one embodiment, a light coupling portion and a light coupling portion are provided on a surface of the at least one waveguide plate away from the user's eyes; The light coupling portion is used to receive the image light emitted from the micro-optical machine, and the light coupling portion is used to receive the image light emitted from the light coupling portion and to project the image light to the eyes of the user.

[0015] In one embodiment, the light coupling portion is disposed on a side of the at least one waveguide sheet close to the nose bracket, and the light coupling portion is disposed on a side of the at least one waveguide sheet away from the nose bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the near-eye display device of Example 1 of the present application.

[0017] Figure 2 This is a top view of the near-eye display device of Embodiment 1 of the present application.

[0018] Figure 3 This is a partial disassembly diagram of the near-eye display device of Example 1 of the present application.

[0019] Figure 4 This is a schematic diagram of the structure of the near-eye display device of the second embodiment of the present application.

[0020] Figure 5 This is a partial disassembly diagram of the near-eye display device of the second embodiment of the present application.

[0021] Description of main component symbols: Near-eye display device 100, 200 Frame 1 Frame 11 Temple 13 Accommodating space 13a Microlight Machine 3 First Microlight Machine 31 Second Microlight Machine 32 Waveguide 5 First surface 5a Second surface 5b Optocoupler 51 Optical coupling unit 53 Nose bracket7 First nose pad portion 71 Second nose pad portion 72 Contact terminal 711 Contact surface 711a Fixed end 713 Fixing through hole 713a First connection portion 73 The second connection portion 74 The second sub-connection terminal 741 The second sub-connection portion 742 Screw hole 7421 Driver module 8 Circuit board 81 Battery 82 Image light L1 Eyes The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0023] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] In order to further explain the technical means and effects adopted by the present application to achieve the intended purpose, the present application is described in detail below in conjunction with the accompanying drawings and preferred implementation methods.

[0025] Embodiment 1 Please also read Figure 1 and Figure 2 The near-eye display device 100 of the first embodiment of the present application includes a frame 1, at least one micro-optical machine 3, at least one waveguide sheet 5 and a nose bracket 7.

[0026] The frame 1 is used to fix at least one waveguide sheet 5. A nose bracket 7 is connected to the frame 1, and the nose bracket 7 is used to rest on both sides of the bridge of the nose of the user. At least one micro-optical machine 3 is fixed to the nose bracket 7. At least one micro-optical machine 3 is used to emit image light L1 toward at least one waveguide sheet 5, and at least one waveguide sheet 5 is used to receive and guide the image light L1 so that the image light L1 is incident on the eye E of the user.

[0027] The frame 1 includes a frame 11 and temples 13 connected to both sides of the frame 11. The frame 11 is used to fix the waveguide plate 5. The temples 13 are used to be fixed to the ears of the user so that the near-eye display device 100 can be worn on the head of the user. In the present embodiment, the frame 11 and the temples 13 are integrally formed, and the material of the frame 11 and the temples 13 is any one of metal, plastic, crystal and carbon fiber. In other embodiments, the frame 11 and the temples 13 can also be formed separately and then fixed as one, and the material of the frame 11 and the temples 13 can be a combination of any two of metal, plastic, crystal and carbon fiber, which is not limited in the present application.

[0028] In this embodiment, the near-eye display device 100 includes two micro-light engines 3, namely a first micro-light engine 31 and a second micro-light engine 32. The first micro-light engine 31 and the second micro-light engine 32 are both fixed on the nose bracket 7, and the direction in which the first micro-light engine 31 emits the image light L1 is the same as the direction in which the second micro-light engine 32 emits the image light L1.

[0029] The first micro-optical engine 31 and the second micro-optical engine 32 can be any one of a micro light emitting diode (Micro Light Emitting Diode, Micro LED) display, an organic light emitting diode (Organic Light-Emitting Diode, OLED) array display, a liquid crystal display (Liquid Crystal Display, LCD), a liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) display, a digital micro-mirror device (Digital Micro-mirror Device, DMD) and a laser beam scanner (Laser Beam Scanning, LBS), or a combination of different two thereof, and the present application does not impose any limitation thereto.

[0030] In other embodiments, the near-eye display device 100 may also include one, three, four or more micro-light machines 3. For example, the near-eye display device may include four micro-light machines 3, and the four micro-light machines 3 are symmetrically fixed on the nose bracket 7. This application does not impose any limitation.

[0031] The waveguide sheet 5 is generally in a plate-like structure. In this embodiment, the near-eye display device 100 includes two waveguide sheets 5, and the two waveguide sheets 5 are fixed in different through holes formed in the frame 11; the number of waveguide sheets 5 is the same as the number of micro-optical machines 3, so that the first micro-optical machine 31 or the second micro-optical machine 32 emits the image light L1 toward the corresponding waveguide sheet 5, so that the left eye or the right eye of the user receives the image light L1 emitted by the corresponding micro-optical machine 3.

[0032] The material of the waveguide plate 5 is any one of transparent glass and plastic, such as any one of polyethylene glycol terephthalate (PET), polycarbonate (PC) and polymeric methyl methacrylate (PMMA), and the present application does not limit this.

[0033] The two waveguide plates 5 each include a first surface 5a away from the user's eyes E and a second surface 5b opposite to the first surface 5a, and a light coupling portion 51 and a light coupling portion 53 are disposed on the first surface 5a of the two waveguide plates 5. The light coupling portion 51 is disposed on a side of each waveguide plate 5 close to the nose bracket 7, and the light coupling portion 51 is disposed on a side of each waveguide plate 5 away from the nose bracket 7.

[0034] The light coupling portion 51 is used to receive the image light L1 emitted from the micro-optical machine 3. The light coupling portion 51 is also used to couple the image light L1 into the waveguide plate 5. After multiple reflections in the waveguide plate 5, the image light L1 is incident on the light coupling portion 53. The light coupling portion 53 is used to receive the image light L1 emitted from the light coupling portion 51 and after multiple reflections in the waveguide plate 5, and is used to project the image light L1 to the eye E of the user.

[0035] In other embodiments, the near-eye display device 100 may also include one, three, four or more waveguide plates 5. For example, the near-eye display device may include four waveguide plates 5. The four waveguide plates 5 are symmetrically fixed on the nose bracket 7, and the two waveguide plates 5 on the same side are overlapped. This application does not impose any limitation.

[0036] Please also read Figure 2 and Figure 3 The nose support 7 includes a first nose support portion 71 , a second nose support portion 72 and two first connecting portions 73 for resting against different sides of the nose bridge of the user.

[0037] The first nose pad part 71 and the second nose pad part 72 each include a contact end 711 for contacting the bridge of the nose of the user and a fixing end 713 connected to the contact end 711. The contact end 711 and the fixing end 713 of the first nose pad part 71 and the second nose pad part 72 are respectively connected to both sides of a first connecting part 73, and the first nose pad part 71 and the second nose pad part 72 are respectively connected to the frame 1 through a first connecting part 73. The material of the first nose pad part 71 and the second nose pad part 72 is any one of metal, plastic, crystal and carbon fiber.

[0038] The distance H between the end of the nose bracket 7 away from the waveguide sheet 5 and the frame 11 is in the range of 10 mm to 12 mm. For example, the distance H between the end of the nose bracket 7 away from the waveguide sheet 5 and the frame 11 can be any value in the range of 10 mm to 10.5 mm, 10.5 mm to 11 mm, 11 mm to 11.5 mm, or 11.5 mm to 11 mm. By setting the distance H between the end of the nose bracket 7 away from the waveguide sheet 5 and the frame 11 to a value in the above range, the volume of the near-eye display device 100 can be reduced while the nose bracket 7 can relatively firmly fix the micro-optical machine 3, so that the space from the frame 1 to the bridge of the nose of the user can be fully utilized, which is conducive to reducing the overall volume of the near-eye display device 100.

[0039] The contact end 711 includes a contact surface 711a that contacts the user's nose bridge. The contact surface 711a is inclined relative to the first connection portion 73 to adapt to the shape of the user's nose bridge, thereby further increasing the user's comfort when wearing. The two fixing ends 713 are used to fix the first micro-light engine 31 and the second micro-light engine 32 respectively; and each fixing end 713 is provided with a fixing through hole 713a, and the micro-light engine 3 is fixed in the fixing through hole 713a.

[0040] In the present embodiment, the first nose pad portion 71, the second nose pad portion 72 and the first connecting portion 73 are an integrally formed structure with the frame 1; in other embodiments, the first nose pad portion 71, the second nose pad portion 72 and the first connecting portion 73 can also be separately formed and then fixed to the frame 1, which is not limited in the present application.

[0041] The near-eye display device 100 further includes a driving module 8, which is electrically connected to the first micro-optical machine 31 and the second micro-optical machine 32 to drive the first micro-optical machine 31 and the second micro-optical machine 32 to emit image light L1 separately or simultaneously. Specifically, the driving module 8 includes a circuit board 81 and a battery 82. The circuit board 81 and the battery 82 are accommodated in the accommodation space 13a formed by the side temple 13, the battery 82 is arranged at one end away from the frame 11, the circuit board 81 is arranged at one end close to the frame 11, the battery 82 is electrically connected to the circuit board 81, the battery 82 is used to power the circuit board 81, and the circuit board 81 is used to control the first micro-optical machine 31 and the second micro-optical machine 32 to emit image light L1 separately or simultaneously. The circuit board 81 can be any one of a control board including an RS485 interface, a central processing unit (CPU), and a single-chip microcomputer (for example, an STM32 single-chip microcomputer, a 51 single-chip microcomputer, a TMS single-chip microcomputer, a PIC single-chip microcomputer, or an AVR single-chip microcomputer), and the present application does not limit it.

[0042] The near-eye display device 100 provided in the first embodiment of the present application is provided with a nose bracket 7 hung on both sides of the user's nose bridge, at least one micro-light machine 3 is fixed on the nose bracket 7, and emits image light L1 toward at least one waveguide plate 5 so that the image light L1 is incident on the user's eye E. This can make full use of the space from the frame 1 to the user's nose bridge, which is beneficial to reducing the overall volume of the near-eye display device 100; and compared with fixing the micro-light machine 3 on the temples 13 on both sides, it is beneficial to reduce the discomfort of the user when wearing the device, and is beneficial to improving the wearing comfort of the user, thereby helping to improve the lightweight level of the near-eye display device 100.

[0043] Embodiment 2 Please also read Figure 4 and Figure 5The difference between the second embodiment and the first embodiment is that the nose support 7 of the near-eye display device 200 of the second embodiment includes a second connection portion 74. The second connection portion 74 is connected to the first nose support portion 71 and the second nose support portion 72. Specifically, the second connection portion 74 is roughly an arch-shaped structure, and the second connection portion 74 includes two second sub-connection ends 741 and a second sub-connection portion 742 connected to the second sub-connection ends 741, and the first nose support portion 71 and the second nose support portion 72 are respectively connected to one second sub-connection end 741. The material of the second connection portion 74 is any one of metal, plastic, crystal and carbon fiber.

[0044] The nose bracket 7 is detachably fixed to the frame 1 through the second connection part 74. Specifically, two screw holes 7421 are provided on the second sub-connection part 742, and the second connection part 74 is screwed to the frame 1 through the two screw holes 7421 on the second sub-connection part 742, so that the nose bracket 7 is detachably fixed to the frame 1. By arranging that the nose bracket 7 is detachably fixed to the frame 1, it can adapt to the shape of the bridge of the nose of different users, so as to further reduce the discomfort of the user when wearing it, which is conducive to improving the wearing comfort of the user, thereby facilitating improving the lightweight level of the near-eye display device 200.

[0045] The near-eye display device 200 provided in the second embodiment of the present application is provided with a nose bracket 7 hung on both sides of the user's nose bridge, at least one micro-light machine 3 is fixed on the nose bracket 7, and image light L1 is emitted toward at least one waveguide plate 5 so that the image light L1 is incident on the user's eye E. The space from the frame 1 to the user's nose bridge can be fully utilized, which is beneficial to reducing the overall volume of the near-eye display device 200. Compared with fixing the micro-light machine 3 on the temples 13 on both sides, it is beneficial to reduce the discomfort of the user when wearing the device, and is beneficial to improving the wearing comfort of the user, thereby facilitating improving the lightweight level of the near-eye display device 200.

[0046] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A near-eye display device, characterized in that: include: A frame for fixing at least one waveguide; A nose bracket connected to the frame, the nose bracket being used to rest against both sides of the bridge of the nose of the user; as well as At least one micro-optical machine is fixed on the nose bracket, and the at least one micro-optical machine is used to emit image light toward the at least one waveguide plate so that the image light is incident on the user's eyes.

2. The near-eye display device according to claim 1, characterized in that: The near-eye display device includes two micro-light engines, namely a first micro-light engine and a second micro-light engine. The direction in which the first micro-light engine emits the image light is the same as the direction in which the second micro-light engine emits the image light.

3. The near-eye display device according to claim 2, characterized in that: The nose pad includes a first nose pad portion and a second nose pad portion for resting on different sides of the user's nose bridge, and the first nose pad portion and the second nose pad portion both include a contact end for contacting the user's nose bridge and a fixed end connected to the contact end, and the two fixed ends are used to fix the first micro-light machine and the second micro-light machine respectively.

4. The near-eye display device according to claim 3, characterized in that: Each of the fixing ends is provided with a fixing through hole, and the micro-optical machine is fixed in the fixing through hole.

5. The near-eye display device according to claim 3, characterized in that: The nose pad also includes two first connecting parts, the contact ends and the fixed ends of the first nose pad and the second nose pad are respectively connected to two sides of one of the first connecting parts, and the first nose pad and the second nose pad are respectively connected to the frame through one of the first connecting parts.

6. The near-eye display device according to claim 5, characterized in that: The first nose pad portion, the second nose pad portion and the first connecting portion are integrally formed with the frame.

7. The near-eye display device according to claim 3, characterized in that: The nose pad further includes a second connection portion connecting the first nose pad portion and the second nose pad portion, and the nose pad is detachably fixed to the frame via the second connection portion.

8. The near-eye display device according to claim 7, characterized in that: The second connecting portion and the frame are screwed together.

9. The near-eye display device according to claim 1, wherein: The near-eye display device further includes a driving module, wherein the driving module is electrically connected to the at least one micro-optical machine to drive the micro-optical machine to emit image light.

10. The near-eye display device according to claim 1, wherein: A light coupling portion and a light coupling portion are arranged on a surface of the at least one waveguide plate on a side away from the user's eyes; The light coupling portion is used to receive the image light emitted from the micro-optical machine, and the light coupling portion is used to receive the image light emitted from the light coupling portion and to project the image light to the eyes of the user.

11. The near-eye display device according to claim 10, wherein: The light coupling portion is arranged on a side of the at least one waveguide plate close to the nose bracket, and the light coupling portion is arranged on a side of the at least one waveguide plate away from the nose bracket.

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