Near-eye display device

Abstract

The application provides a near-eye display device, comprising a frame, a nose bracket and at least one micro 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 hanging on both sides of the user's nose bridge. The at least one micro light machine is fixed to the nose bracket, and the at least one micro light machine is used for emitting image light towards the at least one waveguide sheet, so that the image light is incident to the user's eye.

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

[0002] With the development of science and technology, augmented reality (AR) technology is applied in various fields, such as gaming, education, medical treatment, retail, etc. In order to provide more rich and personalized interactive experience, AR head-mounted display devices are developing towards being more portable and more comfortable. The AR head-mounted display devices commonly seen on the market mainly use two display light machines to meet the needs of left and right eye imaging.

[0003] However, the two display light machines of the AR head-mounted display devices commonly seen on the market are mainly fixed on the two side temples, which not only increases the volume of the AR head-mounted display device, but also affects the comfort of the user when wearing the AR head-mounted display device, thereby affecting the level of lightness of the AR head-mounted display device. SUMMARY

[0004] The present application provides a near-eye display device, comprising:

[0005] a frame for fixing at least one waveguide sheet;

[0006] a nose bracket connected to the frame, the nose bracket being used for abutting against both sides of the user's nasal bridge; and

[0007] at least one micro light machine fixed on the nose bracket, the at least one micro light machine being used for emitting image light towards the at least one waveguide sheet, so that the image light is incident to the user's eyes.

[0008] The near-eye display device provided by the embodiments of the present application can make full use of the space from the frame to the user's nasal bridge by arranging the nose bracket abutting against both sides of the user's nasal bridge, fixing the at least one micro light machine on the nose bracket, and emitting the image light towards the at least one waveguide sheet so that the image light is incident to the user's eyes, which is conducive to reducing the overall volume of the near-eye display device; and compared with fixing the micro light machine on the two side temples, it is conducive to reducing the discomfort of the user when wearing, improving the wearing comfort of the user, and thus improving the level of lightness of the near-eye display device.

[0009] In an embodiment, the near-eye display device comprises two micro light machines, i.e. a first micro light machine and a second micro light machine, and the direction in which the first micro light machine emits the image light is the same as the direction in which the second micro light machine emits the image light.

[0010] In an embodiment, the nose bracket comprises a first nose pad and a second nose pad for abutting against different sides of a user's nose bridge, each of the first nose pad and the second nose pad comprises 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 for fixing the first micro light machine and the second micro light machine respectively.

[0011] In an embodiment, each of the fixed ends is provided with a fixed through hole, and the micro light machine is fixed in the fixed through hole.

[0012] In an embodiment, the nose bracket further comprises two first connecting parts, the contact end and the fixed end of the first nose pad and the second nose pad are connected to two sides of one of the first connecting parts respectively, and the first nose pad and the second nose pad are connected to the frame through one of the first connecting parts respectively.

[0013] In an embodiment, the first nose pad, the second nose pad and the first connecting part are integrally formed with the frame.

[0014] In an embodiment, the nose bracket further comprises a second connecting part connecting the first nose pad and the second nose pad, and the nose bracket is detachably fixed to the frame through the second connecting part.

[0015] In an embodiment, the second connecting part and the frame are screwed.

[0016] In an embodiment, the near-eye display device further comprises a driving module, and the driving module and the at least one micro light machine are electrically connected to drive the micro light machine to emit image light.

[0017] In an embodiment, the at least one waveguide sheet is provided with a light in-coupling part and a light out-coupling part on a side surface away from the user's eye;

[0018] The light in-coupling part is used for receiving the image light emitted from the micro light machine, and the light out-coupling part is used for receiving the image light emitted from the light in-coupling part and projecting the image light to the user's eye.

[0019] In an embodiment, the light in-coupling part is arranged on a side of the at least one waveguide sheet close to the nose bracket, and the light in-coupling part is arranged on a side of the at least one waveguide sheet away from the nose bracket. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of a near-eye display device according to an embodiment of the present application.

[0021] Figure 2A plan view of the near-eye display device of Embodiment One of the present application.

[0022] Figure 3 A partially exploded view of the near-eye display device of Embodiment One of the present application.

[0023] Figure 4 A structural schematic view of the near-eye display device of Embodiment Two of the present application.

[0024] Figure 5 A partially exploded view of the near-eye display device of Embodiment Two of the present application.

[0025] Explanation of main element symbols:

[0026] Near-eye display device 100, 200

[0027] Frame 1

[0028] Temple 13

[0029] Temple 13

[0030] Temple 13

[0031] Micro light machine 3

[0032] First micro light machine 31

[0033] Second micro light machine 32

[0034] Waveguide sheet 5

[0035] First surface 5a

[0036] Second surface 5b

[0037] Light in-coupling portion 51

[0038] Light out-coupling portion 53

[0039] Nose pad 7

[0040] First nose pad portion 71

[0041] Second nose pad portion 72

[0042] Contact end 711

[0043] Contact surface 711a

[0044] Fixed end 713

[0045] Fixed through-hole 713a

[0046] First connecting portion 73

[0047] Second connecting portion 74

[0048] Second sub connecting end 741

[0049] Second sub connecting part 742

[0050] Screw hole 7421

[0051] Driving module 8

[0052] Circuit board 81

[0053] Battery 82

[0054] Image light L1

[0055] Eye E

[0056] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0058] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0059] In order to further clarify the technical means and effects taken by the present application to achieve the predetermined purpose, the following will be described in detail in conjunction with the drawings and the preferred embodiments.

[0060] Embodiment one

[0061] Please refer to Figure 1 and Figure 2 The near-eye display device 100 of the embodiment one of the present application comprises a frame 1, at least one micro light machine 3, at least one waveguide sheet 5, and a nose support 7.

[0062] The frame 1 is used to fix the at least one waveguide sheet 5. The nose support 7 is connected to the frame 1, and the nose support 7 is used to abut against both sides of the user's nose bridge. The at least one micro light machine 3 is fixed to the nose support 7. The at least one micro light machine 3 is used to emit image light L1 towards the at least one waveguide sheet 5, and the at least one waveguide sheet 5 is used to receive and guide the image light L1 so that the image light L1 is incident to the user's eye E.

[0063] The frame 1 includes a mirror frame 11 and mirror legs 13 connected to both sides of the mirror frame 11. The mirror frame 11 is used to fix the waveguide sheet 5. The mirror legs 13 are used to fix the ears of the user, so that the near-eye display device 100 can be worn on the head of the user. In the embodiment, the mirror frame 11 and the mirror legs 13 are integrally formed, and the materials of the mirror frame 11 and the mirror legs 13 are any one of metal, plastic, crystal and carbon fiber. In other embodiments, the mirror frame 11 and the mirror legs 13 can be respectively formed and then fixed as a whole, and the materials of the mirror frame 11 and the mirror legs 13 can be a combination of any two of metal, plastic, crystal and carbon fiber, which is not limited in the application.

[0064] In the embodiment, the near-eye display device 100 includes two micro light machines 3, which are a first micro light machine 31 and a second micro light machine 32. The first micro light machine 31 and the second micro light machine 32 are both fixed on the nose holder 7, and the directions of the image light L1 emitted by the first micro light machine 31 and the second micro light machine 32 are the same.

[0065] The first micro light machine 31 and the second micro light machine 32 can be any same one of a micro light emitting diode (Micro LED) display, an organic light-emitting diode (OLED) array display, a liquid crystal display (LCD), a liquid crystal on silicon (LCOS) display, a digital micro-mirror device (DMD) and a laser beam scanning (LBS), or a combination of any two of them, which is not limited in the application.

[0066] In other embodiments, the near-eye display device 100 can also include one, three, four or more micro light machines 3, for example, the near-eye display device can include four micro light machines 3, which are symmetrically fixed on the nose holder 7, which is not limited in the application.

[0067] The waveguide sheet 5 is generally in a plate-like structure. In the embodiment, the near-eye display device 100 includes two waveguide sheets 5, both of which are fixed in different through holes formed by the mirror frame 11; the number of waveguide sheets 5 is the same as the number of micro light machines 3, so that the first micro light machine 31 or the second micro light machine 32 emits image light L1 towards the corresponding waveguide sheet 5, so that the user's left eye or right eye receives the image light L1 emitted by the corresponding micro light machine 3.

[0068] The material of the waveguide sheet 5 can be any one of transparent glass and plastic, such as any one of polyethylene glycol terephthalate (PET), polycarbonate (PC), and polymeric methyl methacrylate (PMMA), without limitation.

[0069] Both of the waveguide sheets 5 include a first surface 5a away from the eyes E of the user and a second surface 5b opposite to the first surface 5a, and the first surface 5a of each of the waveguide sheets 5 is provided with a light incoupling portion 51 and a light outcoupling portion 53. The light incoupling portion 51 is arranged on the side of each waveguide sheet 5 close to the nose support 7, and the light incoupling portion 51 is arranged on the side of each waveguide sheet 5 away from the nose support 7.

[0070] The light incoupling portion 51 is configured to receive the image light L1 emitted from the micro light engine 3. The light incoupling portion 51 is also configured to couple the image light L1 into the waveguide sheet 5, and the image light L1 is reflected multiple times in the waveguide sheet 5 and then incident on the light outcoupling portion 53. The light outcoupling portion 53 is configured to receive the image light L1 emitted from the light incoupling portion 51 and reflected multiple times in the waveguide sheet 5, and to project the image light L1 to the eyes E of the user.

[0071] In other embodiments, the near-eye display device 100 can also include one, three, four or more waveguide sheets 5, for example, the near-eye display device can include four waveguide sheets 5, which are symmetrically fixed to the nose support 7, and the two waveguide sheets 5 on the same side are arranged in overlap, without limitation.

[0072] Please refer to Figure 2 and Figure 3 together, the nose support 7 includes a first nose support portion 71, a second nose support portion 72, and two first connecting portions 73 for abutting against different sides of the bridge of the nose of the user.

[0073] The first nose support portion 71 and the second nose support portion 72 each include a contact end 711 for contacting the bridge of the nose of the user and a fixed end 713 connected to the contact end 711. The contact end 711 and the fixed end 713 of the first nose support portion 71 and the second nose support portion 72 are respectively connected to the two sides of one first connecting portion 73, and the first nose support portion 71 and the second nose support portion 72 are respectively connected to the frame 1 through one first connecting portion 73. The material of the first nose support portion 71 and the second nose support portion 72 can be any one of metal, plastic, crystal, and carbon fiber.

[0074] The distance H from the end of the nose bracket 7 away from the waveguide sheet 5 to the mirror frame 11 is in the range of 10mm-12mm, for example, the distance H from the end of the nose bracket 7 away from the waveguide sheet 5 to the mirror frame 11 can be in the range of any value in the range of 10mm-10.5mm, 10.5mm-11mm, 11mm-11.5mm or 11.5mm-11mm. By setting the distance H from the end of the nose bracket 7 away from the waveguide sheet 5 to the mirror frame 11 to a value in the above range, the volume of the near-eye display device 100 can be reduced under the premise that the nose bracket 7 can firmly fix the micro light machine 3, so that the space from the frame 1 to the user's nose bridge can be fully utilized, which is beneficial to reduce the overall volume of the near-eye display device 100.

[0075] The contact end 711 includes a contact surface 711a in contact with the user's nose bridge, and the contact surface 711a is inclined relative to the first connecting portion 73 to adapt to the shape of the user's nose bridge, thereby facilitating further increase of the comfort when worn by the user. The two fixing ends 713 are respectively used to fix the first micro light machine 31 and the second micro light machine 32; and each fixing end 713 is provided with a fixing through hole 713a, and the micro light machine 3 is fixed in the fixing through hole 713a.

[0076] In the embodiment, the first nose bracket portion 71, the second nose bracket portion 72 and the first connecting portion 73 are integrally formed with the frame 1; in other embodiments, the first nose bracket portion 71, the second nose bracket portion 72 and the first connecting portion 73 can also be respectively formed and then fixed, which is not limited in the application.

[0077] The near-eye display device 100 further includes a driving module 8, and the driving module 8 is electrically connected with the first micro light machine 31 and the second micro light machine 32 to drive the first micro light machine 31 and the second micro light machine 32 to respectively or simultaneously emit image light L1. 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 an accommodation space 13a formed by the one side temple 13, the battery 82 is arranged at the end away from the mirror frame 11, the circuit board 81 is arranged at the end close to the mirror frame 11, the battery 82 is electrically connected with the circuit board 81, the battery 82 is used to supply power to the circuit board 81, and the circuit board 81 is used to control the first micro light machine 31 and the second micro light machine 32 to respectively or simultaneously emit image light L1. 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), which is not limited in the application.

[0078] The near-eye display device 100 provided by the embodiment one of the present application can make full use of the space between the frame 1 and the nose bridge of the user by arranging the nose holder 7 to be hung on both sides of the nose bridge of the user, fixing the at least one micro light machine 3 on the nose holder 7, and emitting the image light L1 towards the at least one waveguide sheet 5 so that the image light L1 is incident to the eyes E of the user, which is conducive to reducing the overall volume of the near-eye display device 100, and is conducive to reducing the discomfort of the user when wearing, improving the wearing comfort of the user, and thus improving the lightweight level of the near-eye display device 100.

[0079] Embodiment two

[0080] For a better understanding of the present application, please refer to Figure 4 and Figure 5 The difference between the embodiment two and the embodiment one is that the nose holder 7 of the near-eye display device 200 of the embodiment two comprises a second connecting part 74. The second connecting part 74 is connected with the first nose holder part 71 and the second nose holder part 72. Specifically, the second connecting part 74 is generally in the shape of an arch, the second connecting part 74 comprises two second sub connecting ends 741 and a second sub connecting part 742 connected with the second sub connecting ends 741, and the first nose holder part 71 and the second nose holder part 72 are respectively connected with one second sub connecting end 741. The material of the second connecting part 74 is any one of metal, plastic, crystal and carbon fiber.

[0081] The nose holder 7 is detachably fixed to the frame 1 through the second connecting part 74. Specifically, two screw holes 7421 are arranged on the second sub connecting part 742, and the nose holder 7 is detachably fixed to the frame 1 through the two screw holes 7421 on the second sub connecting part 742 and the frame 1. By arranging the nose holder 7 to be detachably fixed to the frame 1, the shape of the nose bridge of different users can be adapted to, so as to further reduce the discomfort of the user when wearing, improve the wearing comfort of the user, and thus improve the lightweight level of the near-eye display device 200.

[0082] The near-eye display device 200 provided by the embodiment two of the present application can make full use of the space between the frame 1 and the nose bridge of the user by arranging the nose holder 7 to be hung on both sides of the nose bridge of the user, fixing the at least one micro light machine 3 on the nose holder 7, and emitting the image light L1 towards the at least one waveguide sheet 5 so that the image light L1 is incident to the eyes E of the user, which is conducive to reducing the overall volume of the near-eye display device 200, and is conducive to reducing the discomfort of the user when wearing, improving the wearing comfort of the user, and thus improving the lightweight level of the near-eye display device 200.

[0083] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application is explained in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalent replaced 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 sheet; A nose bridge, attached to the frame, is used to rest against both sides of the user's nasal bridge. as well as Two micro-optical devices are fixed on the nose bracket, namely a first micro-optical device and a second micro-optical device. Both the first micro-optical device and the second micro-optical device are used to emit image light toward the at least one waveguide plate so that the image light is incident on the user's eyes. The first and second optical micro-optical machines emit image light in the same direction. The nose bridge includes a first nose bridge portion and a second nose bridge portion for abutting against different sides of the user's nasal bridge. Both the first and second nose bridge portions include a contact end for contacting the user's nasal bridge and a fixing end connected to the contact end. The two fixing ends are used to fix the first and second optical micro-optical machines, respectively. Each fixing end has a fixing through hole, and the optical micro-optical machine is fixed in the fixing through hole. The nose bridge also includes two first connecting parts. The contact end and the fixing end of the first nose bridge and the second nose bridge are respectively connected to both sides of one of the first connecting parts. The first nose bridge and the second nose bridge are respectively connected to the frame through one of the first connecting parts.

2. The near-eye display device as described in claim 1, characterized in that, The first nose pad, the second nose pad, and the first connecting part are integrally formed with the frame.

3. The near-eye display device as described in claim 1, characterized in that, The near-eye display device further includes a driving module, which is electrically connected to the at least one micro-opto-electromechanical system (MPES) to drive the MPES to emit image light.

4. The near-eye display device as described in claim 1, characterized in that, At least one waveguide sheet has an optical coupler inlet and an optical coupler outlet on the surface of the side away from the user's eyes. The optical input section is used to receive the image light emitted from the micro-optical engine, and the optical output section is used to receive the image light emitted from the optical input section and to project the image light onto the user's eyes.

5. The near-eye display device as described in claim 4, characterized in that, The optical coupler entry point is located on the side of the at least one waveguide sheet near the nose bracket, and the optical coupler entry point is located on the side of the at least one waveguide sheet away from the nose bracket.

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