CN112083568A - Augmented reality display device and augmented reality glasses - Google Patents
Augmented reality display device and augmented reality glasses Download PDFInfo
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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Abstract
The utility model provides an augmented reality display device, includes little projection system and nanometer waveguide lens, and little projection system sets up in the top of nanometer waveguide lens, and little projection system includes light source and functional film, is equipped with the nanostructure of focus formation of image on the functional film, and the light that the light source sent focuses on the formation of image behind the functional film, and image light is exported by nanometer waveguide lens. The augmented reality display device reduces the volume and the weight of the micro-projection system and improves the comfort of users. The invention also relates to augmented reality glasses.
Description
Technical Field
The invention relates to the technical field of projection display, in particular to an augmented reality display device and augmented reality glasses.
Background
Boeing has created augmented reality in 1990, and then more and more institutes, businesses and colleges have developed research into augmented reality, such as the Hololens holographic glasses, Google Glass, suggested New Glass, etc. by Microsoft. The near-eye display of augmented reality creates a virtual image in the field of view of one or both eyes, fusing and interacting the virtual image with the real scene. Conventional optical waveguide components couple image light into the human eye, including the use of prisms, mirrors, transflective optical waveguides, holograms, and diffraction gratings. The waveguide display system realizes light wave transmission by utilizing a total reflection principle, realizes directional transmission of light by combining a diffraction element, and further guides image light to human eyes, so that a user can see a projected image.
Patent WO2009059446a1 discloses an eye-type display device, which includes a micro-display chip, an optical lens group for magnifying an image generated by the micro-display chip, and a light-conducting plate for transmitting light output from the optical lens group to the eye, and provides an eye-type display device with a larger field of view and a larger exit pupil size.
Fig. 1 is a schematic structural diagram of a conventional projection system. As shown in fig. 1, the projection system includes a light source 71 and a lens 72, and light emitted from the light source 71 passes through the lens 72 and is focused and imaged. The lens 72 is a plano-convex lens, the lens 72 is made of a glass or resin material, and the dimension of the lens 72 is in mm. Therefore, the existing projection system and the augmented reality display device using the projection system have large volume and weight, and the huge projection system hinders the experience of users, so that the viewing comfort cannot be brought.
Disclosure of Invention
In view of this, the present invention provides an augmented reality display device, which reduces the volume and weight of the micro-projection system and improves the user comfort.
The utility model provides an augmented reality display device, includes little projection system and nanometer waveguide lens, and little projection system sets up in the top of nanometer waveguide lens, and little projection system includes light source and functional film, is equipped with the nanostructure of focus formation of image on the functional film, and the light that the light source sent focuses on the formation of image behind the functional film, and image light is exported by nanometer waveguide lens.
In an embodiment of the present invention, the functional film is a fresnel lens.
In an embodiment of the present invention, the functional film is a nano brick.
In an embodiment of the present invention, the nano-waveguide lens includes a waveguide body, a coupling-in area and a coupling-out area are disposed on a surface of the waveguide body, a plurality of structural unit pixels are disposed in the coupling-in area and the coupling-out area, and each of the structural unit pixels includes a first structural subunit, a second structural subunit, and a third structural subunit;
when image light is incident to the coupling-in area, red light can enter the waveguide sheet body from the first structural subunit of the coupling-in area, blue light and green light cannot enter the waveguide sheet body from the first structural subunit, and red light is totally reflected to the coupling-out area in the waveguide sheet body and is emitted from the first structural subunit of the coupling-out area;
blue light can enter the waveguide sheet body from the second structure subunit of the coupling-in area, red light and green light cannot enter the waveguide sheet body from the second structure subunit, and the blue light is totally reflected to the coupling-out area in the waveguide sheet body and can be emitted from the second structure subunit of the coupling-out area;
the green light can enter the waveguide sheet body from the third structural subunit of the coupling-in area, the blue light and the red light cannot enter the waveguide sheet body from the third structural subunit of the coupling-in area, and the green light is totally reflected to the coupling-out area in the waveguide sheet body and can be emitted from the third structural subunit of the coupling-out area.
In an embodiment of the invention, the first structural subunit comprises a plurality of first diffraction gratings, the second structural subunit comprises a plurality of second diffraction gratings, and the third structural subunit comprises a plurality of third diffraction gratings.
In an embodiment of the present invention, a period of the first diffraction grating matches a wavelength of red light; the period of the second diffraction grating is matched with the wavelength of blue light; the period of the third diffraction grating matches the wavelength of the green light.
In an embodiment of the present invention, each of the first diffraction gratings is disposed obliquely; each second diffraction grating is obliquely arranged; each of the third diffraction gratings is disposed obliquely.
In an embodiment of the invention, the surface of the waveguide plate body is further provided with a turning region, the turning region is provided with a plurality of the structural unit pixels, when the image light enters the coupling-in region, the image light is totally reflected to the turning region in the waveguide plate body, and the turning region changes a propagation direction of the image light, so that the image light with the changed direction is totally reflected to the coupling-out region.
In an embodiment of the invention, the refractive index of the nano waveguide lens is 1.3-2.2.
The invention also provides augmented reality glasses, which comprise the augmented reality display device, and further comprise a frame and a supporting leg, wherein one end of the supporting leg is connected to the frame, the frame is provided with two nanometer waveguide lenses, and the supporting leg is provided with a micro-projection system.
The micro-projection system of the augmented reality display device is arranged above the nano waveguide lens and comprises a light source and a functional film, wherein a focusing imaging nano structure is arranged on the functional film, light emitted by the light source passes through the functional film and then is focused and imaged, and image light is output by the nano waveguide lens. The augmented reality display device can realize the imaging function of a plurality of groups of lenses through the functional film, reduces the volume and the weight of the micro-projection system and improves the comfort of users.
Drawings
Fig. 1 is a schematic structural diagram of a conventional projection system.
Fig. 2a is a schematic top view of the nano-waveguide lens of the present invention.
Fig. 2b is a schematic cross-sectional structure view of the nano-waveguide lens shown in fig. 2 a.
Fig. 3a to 3c are schematic views of the arrangement state of the structural unit pixels on the waveguide sheet body according to the present invention.
Fig. 4 is a schematic structural diagram of a three-dimensional display device according to the present invention.
Fig. 5 is a schematic view of the structure of the spectacles according to the present invention.
Fig. 6 is a schematic structural diagram of an augmented reality display device according to the present invention.
Fig. 7 is a schematic structural diagram of a micro-projection system according to a fourth embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a micro-projection system according to a fifth embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a nano-waveguide lens according to a sixth embodiment of the present invention.
Fig. 10 is a schematic structural view of augmented reality glasses according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
First embodiment
Fig. 2a is a schematic top view of the nano-waveguide lens of the present invention. Fig. 2b is a schematic cross-sectional structure view of the nano-waveguide lens shown in fig. 2 a. As shown in fig. 2a and 2b, the nano-waveguide lens 10 includes a waveguide sheet body 11. The surface of the waveguide piece body 11 is provided with a coupling-in region 11a and a coupling-out region 11 b. The waveguide piece body 11 has a first surface 101 and a second surface 102 opposite to each other, and on the first surface 101 or the second surface 102, preferably, the first surface 101 of the waveguide piece body 11 is provided with a coupling-in region 11a and a coupling-out region 11b, and the coupling-in region 11a and the coupling-out region 11b are arranged at a distance from each other. A plurality of structural unit pixels 12 are disposed in the coupling-in region 11a and the coupling-out region 11b, and each structural unit pixel 12 includes a first structural subunit 12a, a second structural subunit 12b, and a third structural subunit 12 c. In the present embodiment, the coupling-in area 11a and the coupling-out area 11b are circular, rectangular or conical in shape, but not limited thereto.
Further, the first structural subunit 12a includes a plurality of first diffraction gratings 121, and the period of the first diffraction gratings 121 matches the wavelength of red light. The second structural subunit 12b includes a plurality of second diffraction gratings 122, the period of the second diffraction gratings 122 matching the wavelength of the blue light. The third structural subunit 12c includes a plurality of third diffraction gratings 123, the period of the third diffraction gratings 123 matching the wavelength of the green light. In the present embodiment, the periods and the orientation angles of the first diffraction grating 121, the second diffraction grating 122, and the third diffraction grating 123 satisfy the grating equations, specifically, equations (1) and (2):
tanψ＝sinφ/(cosφ-n sinθ1(Λ/λ)) (1)
where ψ denotes an azimuth angle of diffracted light; phi represents the orientation angle of the diffraction grating; theta1Represents the incident angle of incident light; Λ represents a period of the diffraction grating; λ represents the wavelength of incident light; n represents the refractive index of the diffraction grating;
sin2(θ2)＝(λ/Λ)2+(n sinθ1)2+2n sinθ1cosφ(λ/Λ) (2)
wherein, theta2Showing the diffraction angle of diffracted light.
After the wavelength and the incident angle of the incident light, the diffraction angle and the diffraction azimuth angle of the diffracted light are specified, the periods and the orientation angles of the first diffraction grating 121, the second diffraction grating 122 and the third diffraction grating 123 which are required can be calculated by the above two formulas.
When image light is incident to the coupling-in area 11a, red light can enter the waveguide body 11 from the first structural subunit 12a of the coupling-in area 11a, blue light and green light cannot enter the waveguide body 11 from the first structural subunit 12a, and red light is totally reflected to the coupling-out area 11b in the waveguide body 11 and is emitted from the first structural subunit 12a of the coupling-out area 11 b;
blue light can enter the waveguide body 11 from the second structure subunit 12b of the coupling-in region 11a, red light and green light cannot enter the waveguide body 11 from the second structure subunit 12b, and the blue light is totally reflected to the coupling-out region 11b in the waveguide body 11 and can be emitted from the second structure subunit 12b of the coupling-out region 11 b;
green light can enter the waveguide body 11 from the third structural subunit 12c of the coupling-in area 11a, blue light and red light cannot enter the waveguide body 11 from the third structural subunit 12c of the coupling-in area 11a, the green light is totally reflected to the coupling-out area 11b in the waveguide body 11 and can be emitted from the third structural subunit 12c of the coupling-out area 11b, and a color image is formed after the red light, the blue light and the green light are emitted and coupled out from the coupling-out area 11 b.
Fig. 3a to 3c are schematic views of the arrangement state of the structural unit pixels on the waveguide sheet body according to the present invention. As shown in fig. 3a to 3c, each first diffraction grating 121 is disposed obliquely; each second diffraction grating 122 is disposed obliquely; the inclined directions of the first diffraction grating 121, the second diffraction grating 122 and the third diffraction grating 123 are the same, the inclined diffraction gratings have selectivity to wavelength, dispersion is avoided, and a higher diffraction efficiency is achieved for a certain wavelength band, for example, red light can enter the waveguide body 11 from the first structure subunit 12a of the coupling-in region 11a, blue light can enter the waveguide body 11 from the second structure subunit 12b of the coupling-in region 11a, and green light can enter the waveguide body 11 from the third structure subunit 12c of the coupling-in region 11 a. In this embodiment, the first diffraction grating 121, the second diffraction grating 122, and the third diffraction grating 123 may be prepared by using a holographic interference technique, a photolithography technique, or a nanoimprint technique, and may be freely selected according to actual needs.
The arrangement positions of the first structure subunit 12a, the second structure subunit 12b, and the third structure subunit 12c of each structure unit pixel 12 can be freely selected according to actual needs, and it is sufficient to ensure that the first diffraction grating 121, the second diffraction grating 122, and the third diffraction grating 123 are in an inclined state. For example: the first structural subunit 12a, the second structural subunit 12b, and the third structural subunit 12c are arranged in this order along the length direction or the width direction of the waveguide sheet body 11, as shown in fig. 3 a. For example: the first structural subunit 12a is sequentially arranged along the length direction or the width direction of the waveguide piece body 11, the second structural subunit 12b and the third structural subunit 12c are located at one side of the first structural subunit 12a, and the second structural subunit 12b and the third structural subunit 12c are sequentially arranged along the length direction or the width direction of the waveguide piece body 11, as shown in fig. 3 b. For example: the first structural subunit 12a is disposed between the second structural subunits 12b and between the third structural subunits 12c, and the second structural subunit 12b, the first structural subunit 12a and the third structural subunit 12c are disposed obliquely in this order, as shown in fig. 3 c.
Furthermore, the size of each structural unit pixel 12 is 5 to 200 μm.
Further, the waveguide plate body 11 is of a single-layer structure, red light, blue light and green light monochromatic light are formed when color image light passes through the coupling-in area 11a and enter the waveguide plate 11, the red light, the blue light and the green light are totally reflected in the single-layer waveguide plate body 11, the light does not interfere with each other, and the red light, the blue light and the green light are output and coupled from the coupling-out area 11b to form a color image. The coupling-in area 11a and the coupling-out area 11b of the waveguide sheet body 11 are respectively provided with a plurality of structural unit pixels 12 which respectively diffract red light, blue light and green light, and the spatial resources are fully utilized to realize the ordered conduction of light in various wave bands through a plurality of structural subunits on a single-layer lens. Under the condition of not increasing lenses, the volume and the mass of the display system or the device can be greatly reduced, and the display system or the device has obvious advantages of lightness and thinness.
Second embodiment
The invention also relates to a three-dimensional display device which comprises the nano waveguide lens 10.
Fig. 4 is a schematic structural diagram of a three-dimensional display device according to the present invention. As shown in fig. 4, the three-dimensional display device 20 further includes a display device 21 and a lens 22. The display device 21 is located above the nano-waveguide lens 10, the lens 22 is disposed between the display device 21 and the nano-waveguide lens 10, and image light emitted from the display device 21 passes through the lens 22 and then enters the coupling-in area 11a of the nano-waveguide lens 10. In the present embodiment, the lens 22 is a plano-convex lens, the lens 22 is made of a glass or resin material, and the dimension of the lens 22 is in mm.
Third embodiment
The invention also relates to spectacles comprising the nano-waveguide lens 10.
Fig. 5 is a schematic view of the structure of the spectacles according to the present invention. As shown in fig. 5, the glasses 30 further include a frame 31 and temples 32. One end of each of the temples 32 is connected to the frame 31, two nano waveguide lenses 10 are arranged on the frame 31, the coupling-out areas 11b of the two nano waveguide lenses 10 are arranged corresponding to the eyes, and the coupling-in areas 11a are arranged corresponding to the temples 32. In this embodiment, the end of the temple 32 connected to the frame 31 is provided with a receiving cavity, which faces the coupling-in area 11a of the nano waveguide lens 10, and a display screen (not shown) and a DMD digital micromirror array (not shown) are installed in the receiving cavity. The display screen emits image light, the image light is focused by the lens group, the image light is coupled to the coupling-in area 11a of the waveguide sheet body 11, the image light is transmitted to the coupling-out area 11b through the first structure subunit 12a, the second structure subunit 12b and the third structure subunit 12c of each structure unit pixel 12, the image light is output to human eyes from the coupling-out area 11b, the human eyes receive the coupled image light from the nano waveguide lens 10, and three-dimensional color display is achieved by means of binocular parallax.
Fourth embodiment
The invention also relates to an augmented reality display device, which comprises the nano waveguide lens 10.
Fig. 6 is a schematic structural diagram of an augmented reality display device according to the present invention. As shown in fig. 6, the augmented reality display device 40 includes a micro-projection system 42 and a nano-waveguide lens 10. The micro-projection system 42 is disposed above the nano-waveguide lens 10, the micro-projection system 42 includes a light source 421 and a functional film 422, a focusing and imaging nano-structure is disposed on the functional film 422, light emitted from the light source passes through the functional film 422 and then is focused and imaged, and image light is output by the nano-waveguide lens 10. In this embodiment, the functional film 422 is thermally deformable and may be made of photoresist, and in other embodiments, the nanostructure of the functional film 422 is a structure formed by replica transfer.
Further, the Light source of the micro-projection system 42 may be selected from one of a Liquid Crystal projector (LCOS), a projector (Digital Light processing; DLP), a Liquid Crystal Display (LCD), and a Light Emitting Diode (LED).
Further, the nano-waveguide lens 10 may be a single-layer structure as described in the first embodiment, but not limited thereto, the nano-waveguide lens 10 may also be a multi-layer structure, preferably, the nano-waveguide lens 10 includes three waveguide bodies 12, the three waveguide bodies 12 are stacked, a plurality of first structure sub-units 12a are disposed on a surface of the upper waveguide body 12, a plurality of second structure sub-units 12b are disposed on a surface of the middle waveguide body 12, and a plurality of third structure sub-units 12c are disposed on a surface of the lower waveguide body 12, and please refer to the first embodiment for the structure and function of the first structure sub-units 12a, the second structure sub-units 12b, and the third structure sub-units 12c, which will not be described herein again. The refractive index of the nano waveguide lens 10 is 1.3-2.2.
In this embodiment, the functional film 422 is a fresnel lens, and the imaging function of multiple groups of lenses can be realized only through the functional film 422, so that the volume and weight of the micro-projection system 42 are reduced, and the user comfort is improved.
Fig. 7 is a schematic structural diagram of a micro-projection system according to a fourth embodiment of the present invention. As shown in fig. 7, the nano structure on the surface of the functional film 422 is composed of a series of sawtooth-shaped grooves, the surface of the central region of the functional film 422 is an elliptical arc surface, the angles of the grooves are different from the central region to the edge of the functional film 422, but each groove concentrates light to a point to form a central focus, each groove can be regarded as an independent small lens to adjust the light to be planar light or condensed light, and the grooves are all nano structures manufactured by using a photolithography technique, so that the nano structure can be nano-sized, and the volume and the weight of the micro-projection system 42 can be greatly reduced.
Fifth embodiment
Fig. 8 is a schematic structural diagram of a micro-projection system according to a fifth embodiment of the present invention. As shown in fig. 8, the augmented reality display device 40 of the present embodiment has substantially the same configuration as the augmented reality display device 40 of the fourth embodiment, and is different in the configuration of the micro-projection system 42. In this embodiment, the functional film 422 is a nano-brick, and the imaging function of the multiple groups of lenses can be realized only through the functional film 422, so that the volume and weight of the micro-projection system 42 are reduced, and the comfort of the user is improved.
As shown in fig. 8, a plurality of nano-bricks are randomly arranged on the surface of the functional film 422, so that the functional film 422 can realize the optical focusing function of the geometric lens on a plane, and the nano-bricks are nano-structures manufactured by using a photolithography technique, so that the nano-structures can be nano-sized, and the volume and weight of the micro-projection system 42 can be greatly reduced.
Sixth embodiment
Fig. 9 is a schematic structural diagram of a nano-waveguide lens according to a sixth embodiment of the present invention. As shown in fig. 9, the augmented reality display device 40 of the present embodiment has substantially the same structure as the augmented reality display device 40 of the fourth embodiment, and is different in the structure of the nano-waveguide lens 10.
Specifically, as shown in fig. 9, a turning region 11c is further disposed on the surface of the waveguide sheet body 11, a plurality of structural unit pixels 12 are disposed in the turning region 11c, each structural unit pixel 12 includes a first structural subunit 12a, a second structural subunit 12b and a third structural subunit 12c, and for the function and the function of the structural unit pixel 12, reference is made to the first embodiment, which is not repeated herein. When the image light enters the coupling-in region 11a, the image light is totally reflected to the turning region 11c in the waveguide body 11, and the turning region 11c changes the propagation direction of the image light, so that the image light with the changed direction is totally reflected to the coupling-out region 11 b. In the present embodiment, the light emitted from the micro-projection system 42 is incident on the nano-waveguide lens 10, and the light is bent and then emitted to human eyes, so that a user can see the displayed image at a certain position through the nano-waveguide lens 10, thereby realizing the virtual-real fusion. The turning region 11c of the nano waveguide lens 10 changes the propagation direction of light, enlarges the range of visual angles and can better meet the requirements of users.
Seventh embodiment
The invention also relates to augmented reality glasses comprising the augmented reality display device 40.
Fig. 10 is a schematic structural view of augmented reality glasses according to the present invention. As shown in fig. 10, the augmented reality glasses 50 further include a frame 51 and a support leg 52, one end of the support leg 52 is connected to the frame 51, two nano-waveguide lenses 10 are disposed on the frame 51, and the micro-projection system 42 is disposed on the support leg 52. In the present embodiment, the left and right independent micro-projection systems 42 output different parallax images, thereby realizing stereoscopic three-dimensional display.
The micro-projection system 42 of the augmented reality display device 40 of the present invention is disposed above the nano-waveguide lens 10, the micro-projection system 42 includes a light source 421 and a functional film 422 made of photoresist, the functional film 422 is provided with a focusing imaging nanostructure, light emitted from the light source 421 passes through the functional film 422 and then is focused and imaged, and image light is output by the nano-waveguide lens 10. The augmented reality display device 40 of the present invention can realize the imaging function of multiple groups of lenses through the functional film 422, reduce the volume and weight of the micro-projection system 42, and improve the comfort of users.
The present invention is not limited to the specific details of the above-described embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. The utility model provides an augmented reality display device, its characterized in that includes and throws system and nanometer waveguide lens a little, should throw the system setting in the top of this nanometer waveguide lens a little, should throw the system a little and include light source and functional film, be equipped with the nanostructure of focus formation of image on this functional film, the light that this light source sent focuses on the formation of image behind this functional film, image light is exported by this nanometer waveguide lens.
2. The augmented reality display device of claim 1, wherein the functional film is a fresnel lens.
3. The augmented reality display apparatus of claim 1, wherein the functional film is a nano-tile.
4. The augmented reality display device of claim 1, wherein the nano-waveguide lens comprises a waveguide body, a coupling-in region and a coupling-out region are provided on a surface of the waveguide body, a plurality of structural unit pixels are provided in the coupling-in region and the coupling-out region, and each of the structural unit pixels comprises a first structural subunit, a second structural subunit and a third structural subunit;
when image light is incident to the coupling-in area, red light can enter the waveguide sheet body from the first structural subunit of the coupling-in area, blue light and green light cannot enter the waveguide sheet body from the first structural subunit, and red light is totally reflected to the coupling-out area in the waveguide sheet body and is emitted from the first structural subunit of the coupling-out area;
blue light can enter the waveguide sheet body from the second structure subunit of the coupling-in area, red light and green light cannot enter the waveguide sheet body from the second structure subunit, and the blue light is totally reflected to the coupling-out area in the waveguide sheet body and can be emitted from the second structure subunit of the coupling-out area;
the green light can enter the waveguide sheet body from the third structural subunit of the coupling-in area, the blue light and the red light cannot enter the waveguide sheet body from the third structural subunit of the coupling-in area, and the green light is totally reflected to the coupling-out area in the waveguide sheet body and can be emitted from the third structural subunit of the coupling-out area.
5. The augmented reality display device of claim 4, wherein the first structural subunit comprises a plurality of first diffraction gratings, the second structural subunit comprises a plurality of second diffraction gratings, and the third structural subunit comprises a plurality of third diffraction gratings.
6. The augmented reality display device of claim 5, wherein the period of the first diffraction grating matches the wavelength of red light; the period of the second diffraction grating is matched with the wavelength of blue light; the period of the third diffraction grating matches the wavelength of the green light.
7. The augmented reality display apparatus of claim 5, wherein each of the first diffraction gratings is disposed obliquely; each second diffraction grating is obliquely arranged; each of the third diffraction gratings is disposed obliquely.
8. The device as claimed in claim 4, wherein the waveguide body further has a turning region on the surface thereof, the turning region having a plurality of the unit pixels, when the image light enters the coupling region, the image light is totally reflected to the turning region in the waveguide body, and the turning region changes the propagation direction of the image light, so that the image light with changed direction is totally reflected to the coupling region.
9. The augmented reality display apparatus of claim 1, wherein the nano-waveguide lens has a refractive index of 1.3 to 2.2.
10. Augmented reality glasses comprising the augmented reality display device of any one of claims 1 to 9, further comprising a frame and a support leg, wherein one end of the support leg is connected to the frame, the frame is provided with two nano-waveguide lenses, and the support leg is provided with a micro-projection system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359300A (en) * | 2021-06-21 | 2021-09-07 | 北京亮亮视野科技有限公司 | Thin film type near-to-eye display system and glasses with built-in display system |
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