CN113514955A - AR optical system and AR display device - Google Patents
AR optical system and AR display device Download PDFInfo
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- CN113514955A CN113514955A CN202110475040.1A CN202110475040A CN113514955A CN 113514955 A CN113514955 A CN 113514955A CN 202110475040 A CN202110475040 A CN 202110475040A CN 113514955 A CN113514955 A CN 113514955A
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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
- 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
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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Abstract
The application relates to an AR optical system and AR display equipment, wherein the AR optical system comprises a display module, an eyeball tracking module and a dimming module, and a substrate in the eyeball tracking module is provided with a bearing surface; the micro LEDs and the micro optical sensing elements are arranged on the bearing surface in an array mode, the micro LEDs are configured to emit first light rays to eyeballs of a user, and the micro optical sensing elements are configured to sense the light rays reflected by the eyeballs of the user and generate eyeball images; the micro integrated circuit is arranged on the bearing surface, the micro LED and the micro optical sensing element are respectively and electrically connected with the micro integrated circuit, and the micro integrated circuit is configured to be capable of determining the position information of the eyeball according to the eyeball image; the coupling element in the dimming module is electrically connected with the micro integrated circuit, and the coupling element is configured to adjust the angle of light rays emitted to the eyeball by the virtual image according to the position information of the eyeball so as to enable the light rays to be directly emitted. The AR optical system of the application has stronger universality.
Description
Technical Field
The present application relates to the field of display device technology, and in particular, to an AR optical system and an AR display device.
Background
Augmented Reality (AR) technology mixes virtual information into a scene of the real world through computer technology, so that a real environment and a virtual picture are presented in the same picture in real time, and mutual supplement and superposition of real world information and virtual world information can be realized, thereby enabling a user to have an immersive sensation.
In the AR optical system, there is an area where the displayed content is clearest, and when the user's eyes are located in this area, a clear image can be seen, and beyond this area, problems such as image distortion, color error, and even no displayed content may occur.
However, because the position, size, etc. of each eye of a person are different, the existing AR optical system is difficult to meet the use requirements of different users, and the universality is poor.
Disclosure of Invention
Accordingly, it is necessary to provide an AR optical system and an AR display apparatus for solving the problems that the AR optical system is difficult to meet the use requirements of different users and the versatility is poor.
An embodiment of the present application provides an AR optical system, including: the display module is used for displaying the virtual image; eyeball tracking module includes: a substrate having a carrying surface; the micro LEDs and the micro optical sensing elements are arranged on the bearing surface in an array mode, the micro LEDs are configured to emit first light to eyeballs of a user, and the micro optical sensing elements are configured to sense the light reflected by the eyeballs of the user and generate eyeball images; the micro integrated circuit is arranged on the bearing surface, the micro LED and the micro optical sensing element are respectively and electrically connected with the micro integrated circuit, and the micro integrated circuit is configured to be capable of determining the position information of the eyeball according to the eyeball image; and the light adjusting module comprises a coupling element which is electrically connected with the micro integrated circuit, and the coupling element is configured to adjust the angle of the light rays emitted to the eyeball of the virtual image according to the position information of the eyeball so as to enable the light rays to be directly emitted.
In one embodiment, the coupling element is a lens assembly comprising a plurality of liquid crystal lenses; the liquid crystal lens has an optical axis, and the dimming module is configured to be capable of changing the direction of the optical axis of the liquid crystal lens according to the position information of the eyeball.
In one embodiment, the coupling element is a liquid crystal prism; the liquid crystal prism has different equivalent refractive indexes at different positions, and the dimming module is configured to be capable of changing the position of the liquid crystal prism through which light rays emitted to the eyeball from the virtual image pass according to the position information of the eyeball.
In one embodiment, the coupling element is a liquid crystal grating; the dimming module is configured to change the propagation direction of light rays emitted to the eyeball from the virtual image after passing through the liquid crystal grating according to the position information of the eyeball.
In one embodiment, the light-adjusting module further includes an optical waveguide module configured to project the light emitted from the coupling element to an eyeball of a user.
In one embodiment, the optical waveguide module includes an optical waveguide element having an incident surface, and the coupling element is disposed on a side of the optical waveguide element facing the incident surface.
In one embodiment, the optical waveguide element has an input region and an output region arranged at a distance from one another, the input region being configured to couple light into the optical waveguide element, and the output region being configured to couple light out of the optical waveguide element.
In one embodiment, the optical waveguide module further includes a first grating element and a second grating element, the first grating element is disposed on a side of the optical waveguide element away from the light incident surface to form an input region, and the second grating element is disposed on a side of the optical waveguide element away from the light incident surface to form an output region.
In one embodiment, the coupling element and the first grating element are oppositely arranged with respect to the optical waveguide element.
In one embodiment, the eye tracking module is disposed on a side of the optical waveguide element facing the light incident surface, and the eye tracking module and the second grating element are disposed opposite to each other with respect to the optical waveguide element.
An embodiment of the present application further provides an AR display device, including: the frame and the AR optical system as described above, the AR optical system is fixed to the frame.
In one embodiment, the display device further comprises a lens, the lens is arranged on the frame, and the surface of the substrate, which is far away from the bearing surface, is attached to the lens.
Based on AR optical system and AR display device of this application embodiment, through the miniature LED in the eyeball tracking module to user's eyeball transmission first light, miniature optical sensing element sensing is by the light of user's eyeball reflection and is generated the eyeball image, miniature integrated circuit confirms the positional information of eyeball according to this eyeball image, make AR optical system possess eyeball tracking function, thereby coupling element in the subassembly of adjusting luminance just can adjust the light angle that the virtual image that the display module shows launches to the eyeball according to the positional information of eyeball, make different users all can see clear image, satisfy different users ' user demand, the commonality is stronger.
Drawings
FIG. 1 is a simplified structural schematic diagram of an AR optical system provided in one embodiment of the present application;
fig. 2 is a schematic view illustrating distribution of micro LEDs, micro optical sensing elements and micro integrated circuits on a carrying surface of a substrate in an eyeball tracking module according to an embodiment of the present disclosure;
FIG. 3 is a simplified structural schematic diagram of an AR optical system in one state of use according to one embodiment of the present application;
FIG. 4 is a simplified structural schematic diagram of an AR optical system in another state of use according to one embodiment of the present application;
fig. 5 is a schematic perspective view of an AR display device according to an embodiment of the present application.
Description of the main elements
AR display device 1
Eyeball 2
AR optical system 10
Frame 20
Micro LED220
Micro optical sensing element 230
Micro integrated circuit 240
Lens 400
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein 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 application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a schematic perspective view of an AR optical system 10 according to an embodiment of the present disclosure, and fig. 2 is a schematic simplified structural view of the AR optical system 10 according to an embodiment of the present disclosure.
Referring to fig. 1 to 2, an embodiment of the present disclosure provides an AR optical system 10, where the AR optical system 10 includes a display module 100, an eye tracking module 200, and a dimming module 300. The ar (augmented reality) optical system is capable of complementing and superimposing real world information and virtual world information with each other, thereby realizing "augmentation" of the real world.
The display module 100 is used for displaying a virtual image 110. Specifically, the Display screen may be any screen having a Display function, such as a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) Display screen, an Organic Light-Emitting Diode (OLED) Display screen, or an active matrix Quantum Dot Light Emitting Diode (QLED) Display screen.
As shown in fig. 2, the eye-tracking module 200 includes a substrate 210, a plurality of micro LEDs 220, a plurality of micro optical sensing elements 230, and a micro integrated circuit 240. The substrate 210 is transparent, one surface of the substrate 210 is a supporting surface 211, the micro integrated circuit 240 is disposed on the supporting surface 211, the plurality of micro LEDs 220 and the plurality of micro optical sensing elements 230 are arranged on the supporting surface 211 in an array, the plurality of micro LEDs 220 can be arranged on the supporting surface 211 in a rectangular array to form a plurality of rows and a plurality of columns, and similarly, the plurality of micro optical sensing elements 230 can also be arranged on the supporting surface 211 in a rectangular array to form a plurality of rows and a plurality of columns. In order to facilitate the manufacturing and forming of the eye tracking module 200, in some embodiments, a row of micro optical sensing elements 230 is disposed between two adjacent rows of micro LEDs 220, and a row of micro LEDs 220 is disposed between two adjacent rows of micro optical sensing elements 230. In other embodiments, the arrangement of the micro LEDs 220 and the micro optical sensing elements 230 may not be limited thereto. The micro LED220 and the micro optical sensing element 230 are electrically connected to the micro integrated circuit 240, respectively.
In the eye tracking module 200, the micro LED220 can emit a first light to the eyeball 2 of the user, the micro optical sensing element 230 can sense the light reflected by the eyeball 2 of the user and generate an image of the eyeball 2, and the micro integrated circuit 240 can determine the position information of the eyeball 2 according to the image of the eyeball 2. Thus, the AR optical system 10 has an eyeball 2 tracking function. The micro LED220 may be a micro infrared LED, and the first light emitted by the micro infrared LED is infrared light. Further, the micro integrated circuit 240 may determine the eye movement of the user, such as eye jump, gaze, smooth tracking, blinking, etc., according to the position information of the user's eyeball 2. In this manner, the AR optical system 10 may also give the user different feedback based on the eye movements of the user, for example, when the user is gazing, a trigger or selection action may be performed, and when the user blinks, a confirmation action may be performed.
After the position information of the eyeball 2 is determined, the light-adjusting module 300 can be used to adjust the light emitted from the virtual image 110 to be directly emitted into the eyeball 2 of the user. Specifically, the dimming module 300 includes a coupling element 310, and the coupling element 310 is electrically connected to the micro integrated circuit 240. After receiving the position information of the eyeball 2 determined in the micro integrated circuit 240, the coupling element 310 can adjust the angle of the light emitted from the virtual image 110 to the eyeball 2 according to the position information of the eyeball 2 so as to direct the light into the eyeball 2 of the user.
In the AR optical system 10 of the embodiment of the present application, the micro LED220 in the eyeball tracking module 200 emits the first light to the eyeball 2 of the user, the micro optical sensing element 230 senses the light reflected by the eyeball 2 of the user and generates the image of the eyeball 2, and the micro integrated circuit 240 determines the position information of the eyeball 2 according to the image of the eyeball 2, so that the AR optical system 10 has the function of tracking the eyeball 2, and therefore the coupling element 310 in the dimming component can adjust the angle of the light emitted from the virtual image 110 displayed by the display module 100 to the eyeball 2 according to the position information of the eyeball 2, so that different users can see clear images, thereby satisfying the use requirements of different users, and having stronger universality.
It should be noted that, according to different application scenarios and different usage requirements, the numbers of the eyeball-tracking module 200 and the light-adjusting module 300 in the AR optical system 10 may be only one, and for one of the eyes of the user to use alone, the eyeball-tracking module 200 tracks the eyeball 2 of the eye, and the light emitted by the virtual image 110 displayed by the display module 100 is adjusted by the light-adjusting module 300 and then is directly emitted into the eyeball 2 of the eye. The numbers of the eyeball tracking modules 200 and the light adjusting modules 300 in the AR optical system 10 may be two, and for the two eyes of the user to use in pairs, the two eyeball tracking modules 200 respectively track the eyeballs 2 of the two eyes, and the light emitted by the virtual image 110 displayed by the display module 100 is respectively adjusted by the two light adjusting modules 300 and then is directly projected into the eyeballs 2 of the two eyes.
The coupling element 310 adjusts the angle of the light emitted from the virtual image 110 to the eyeball 2 according to the position information of the eyeball 2 so as to be directly incident on the eyeball 2 of the user, and the manner of adjusting the angle of the light by the coupling element 310 varies according to the type of the coupling element 310. Specifically, in some embodiments, the coupling element 310 may be a lens assembly including a plurality of liquid crystal lenses, in which the plurality of liquid crystal lenses are stacked and arranged in an array, and the liquid crystal micro-lens is a micro-lens that utilizes an electro-optical effect to change a spatial distribution of a refractive index of the lens, and has advantages of a small size and an adjustable focal length. The liquid crystal lens has an optical axis, the optical axis is an artificial defined virtual axis in the lens, a straight line passing through two spherical centers of the liquid crystal lens is called the optical axis, and light parallel to the optical axis is converged at a point after passing through the liquid crystal lens, and the point is the focal point of the liquid crystal lens. The light adjusting module 300 is configured to change the optical axis direction of the liquid crystal lens according to the position information of the eyeball 2, after the optical axis direction of the liquid crystal lens is changed, the direction of the light beam passing through the liquid crystal lens is changed, and by changing the optical axis direction of the liquid crystal lens to a proper direction, the light beam emitted to the eyeball 2 by the virtual image 110 displayed by the display module 100 can be refracted to a required angle by the liquid crystal lens group, so as to achieve the effect of directly irradiating the eyeball 2 of the user.
In other embodiments, the coupling element 310 may be a liquid crystal prism, which is a polyhedron made of transparent materials, and the prism can change the traveling direction of the light rays passing through the prism, i.e., refract the light rays. The liquid crystal prism is a prism which forms a gradient electric field by applying different voltages on different electrodes in the electrode group, so that the electric field force applied to liquid crystal molecules at different positions is different, the rotation directions of the liquid crystal molecules are different, and the light ray refraction effect is realized. Since the change degree of the traveling direction of the light ray passing through the liquid crystal prism from different positions on the liquid crystal prism is different, the liquid crystal prism has different equivalent refractive indexes at different positions. The light adjusting module 300 is configured to change the position of the light emitted from the virtual image 110 to the eyeball 2 through the liquid crystal prism according to the position information of the eyeball 2, and by changing the position of the light emitted from the virtual image 110 to the eyeball 2 through the liquid crystal prism, the light can be refracted by the liquid crystal prism to a desired angle, so as to achieve the effect of directly irradiating the light into the eyeball 2 of the user.
In other embodiments, the coupling element 310 may also be a liquid crystal grating, the grating is an optical element that disperses light by using the principle of multi-slit diffraction, and the liquid crystal grating is an optical element that forms an electric field by applying a voltage to electrodes, liquid crystal molecules are deflected by the force of the electric field to realize a diffraction effect on light, and the propagation direction of light can be changed by using the diffraction effect. The light adjusting module 300 is configured to change a propagation direction of the light emitted from the virtual image 110 to the eyeball 2 after passing through the liquid crystal grating according to the position information of the eyeball 2, so that the light emitted from the virtual image 110 displayed by the display module 100 to the eyeball 2 is adjusted to a desired angle by the liquid crystal grating, thereby achieving an effect of directly irradiating into the eyeball 2 of the user.
Fig. 3 is a simplified structural diagram of the AR optical system 10 in one state in use according to an embodiment of the present application, and fig. 4 is a simplified structural diagram of the AR optical system 10 in another state in use according to an embodiment of the present application.
Referring to fig. 3 to 4, in some embodiments, the light adjusting module 300 further includes an optical waveguide module 320, and the optical waveguide module 320 is configured to project the light emitted from the coupling element 310 to the eyeball 2 of the user. The optical waveguide module 320 is a dielectric device for guiding light waves to propagate therein, and can play a role of guiding light. The light emitted from the coupling element 310 enters the optical waveguide module 320 and is transmitted to the eyeball 2 of the user. Therefore, the user can receive the virtual image 110 transmitted from the optical waveguide module 320, and the display module 100 does not need to block the front of the user's sight line, and the virtual image 110 displayed by the display module 100 can also be received by the user, so as to be fused with the real image in front of the user's sight line to form an AR image.
Specifically, in some embodiments, the optical waveguide module 320 includes an optical waveguide element 321, the optical waveguide element 321 has an incident surface 3211, and the coupling element 310 is disposed on a side of the optical waveguide element 321 facing the incident surface 3211. As shown in fig. 3 and fig. 4, the light incident surface 3211 is a surface of the optical waveguide element 321 for receiving light, and the light, the angle of which is adjusted by the coupling element 310, enters the optical waveguide element 321 through the light incident surface 3211 and is transmitted in the optical waveguide element 321. The optical waveguide element 321 has an input region 3212 and an output region 3213 which are spaced apart from each other, and it is understood that a region of the light incident surface 3211 facing the input region 3212 may be regarded as the input region 3212 of the optical waveguide element 321, and a region of the light incident surface 3211 facing the output region 3213 may be regarded as the output region 3213 of the optical waveguide element 321. The light adjusted in angle by the coupling element 310 enters the optical waveguide element 321 from the input region 3212, and is coupled out from the output region 3213 after being transmitted by the optical waveguide element 321.
The light paths in the figure only show the paths of travel of some of the incident light rays, and in other embodiments, other wavelengths of the incident light rays may travel along other paths in the optical waveguide element 321. The shape of the optical waveguide element 321 may be changed according to the wavelength range of the incident light, and the number of the optical waveguide elements 321 may be plural, which is not limited herein.
In some embodiments, the light coupling in and out of the optical waveguide module 320 is implemented by a holographic grating, specifically, the optical waveguide module 320 further includes a first grating element 322 and a second grating element 323, the first grating element 322 is disposed on a side of the optical waveguide element 321 away from the light incident surface 3211 to form an input region 3212, and the second grating element 323 is disposed on a side of the optical waveguide element 321 away from the light incident surface 3211 to form an output region 3213. When the light reaches the first grating element 322 through the light incident surface 3211, the incident light is diffracted in the first grating element 322, and is coupled by the holographic grating and then input into the optical waveguide element 321. Similarly, when the light beam in the optical waveguide element 321 reaches the second grating element 323, an optical phenomenon such as diffraction occurs in the first grating element 322, and the light beam is coupled by the holographic grating and output from the optical waveguide element 321.
Further, the coupling element 310 may be arranged opposite the first grating element 322 with respect to the optical waveguide element 321, which may reduce the propagation distance of the light output in the coupling element 310 to the first grating element 322. Similarly, in some embodiments, the eye tracking module 200 is disposed on a side of the optical waveguide element 321 facing the light incident surface 3211, and the eye tracking module 200 and the second grating element 323 are disposed opposite to each other with respect to the optical waveguide element 321, so that the light output by the optical waveguide element 321 can pass through the eye tracking module 200 and directly enter the user's eyeball 2, the eye tracking module 200 does not block the light, and the eye tracking module 200 can directly track the user's eyeball 2, and the structure is reasonable, thereby effectively saving the space occupied by the AR optical system 10.
Fig. 5 is a schematic perspective view of an AR display device 1 according to an embodiment of the present application
Referring to fig. 5, an AR display apparatus 1 is further provided in the present embodiment, where the AR display apparatus 1 includes a frame 20 and the AR optical system 10 as described above, where the AR optical system 10 is fixed to the frame 20. The AR display device 1 is a wearable device that can be worn on the head of a human body to display by implementing AR technology, superimposes virtual information on the real world by using computer technology, so that the real environment and virtual objects can be superimposed on the same picture in real time to realize mutual supplement of the two kinds of information, and display the picture in front of the user by using the AR display device 1. The AR display device 1 in the embodiment of the present application, emits the first light to the eyeball 2 of the user through the micro LED220 in the eyeball tracking module 200, the micro optical sensing element 230 senses the light reflected by the eyeball 2 of the user and generates an image of the eyeball 2, the micro integrated circuit 240 determines the position information of the eyeball 2 according to the image of the eyeball 2, so that the AR display device 1 has the function of tracking the eyeball 2, the coupling element 310 in the dimming component can adjust the angle of the light emitted from the virtual image 110 displayed by the display module 100 to the eyeball 2 according to the position information of the eyeball 2, so that different users can see clear images, thereby satisfying the use requirements of different users, and the universality is stronger.
Specifically, in some embodiments, as shown in fig. 5, the AR display apparatus 1 may be in a glasses shape, in this case, the AR display apparatus 1 further includes a lens 30, the lens 30 is disposed on the frame 20, and a surface of the substrate 210 facing away from the bearing surface 211 is attached to the lens 30. The frame 20 includes a frame and two temple bars spaced apart from each other on opposite sides of the frame, and the lenses 30 are mounted to the frame. In use, the user can attach the two temples of the frame 20 to the ears of the user to orient the lenses 30 toward their eyes. The number of the lenses 30 is illustrated as two, but the number of the lenses 30 may be one or more, which is not limited herein. In other embodiments, the AR display device 1 may be in the form of a helmet, and in use, the user may cover the helmet-shaped frame 20 on his head and orient the lens 30 towards his eyes. In short, by arranging the frame 20 to include the glasses frame and the glasses legs or the helmet, the AR display device 1 can be formed into different use forms to respectively meet different kinds of use requirements of various users, and the application range of the AR display device 1 in the embodiment is expanded.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. An AR optical system, comprising:
the display module is used for displaying the virtual image;
eyeball tracking module includes:
a substrate having a carrying surface;
the micro LEDs and the micro optical sensing elements are arranged on the bearing surface in an array mode, the micro LEDs are configured to emit first light to eyeballs of a user, and the micro optical sensing elements are configured to sense the light reflected by the eyeballs of the user and generate eyeball images;
the micro integrated circuit is arranged on the bearing surface, the micro LED and the micro optical sensing element are respectively and electrically connected with the micro integrated circuit, and the micro integrated circuit is configured to be capable of determining the position information of the eyeball according to the eyeball image; and
the light adjusting module comprises a coupling element which is electrically connected with the micro integrated circuit, and the coupling element is configured to adjust the angle of light rays emitted to the eyeball by the virtual image according to the position information of the eyeball so as to enable the light rays to be directly emitted.
2. The AR optical system of claim 1, wherein the coupling element is a lens group comprising a plurality of liquid crystal lenses;
the liquid crystal lens is provided with an optical axis, and the dimming module is configured to change the direction of the optical axis of the liquid crystal lens according to the position information of the eyeball.
3. The AR optical system of claim 1, wherein the coupling element is a liquid crystal prism;
the liquid crystal prism has different equivalent refractive indexes at different positions, and the dimming module is configured to be capable of changing the position of the liquid crystal prism through which light rays emitted to the eyeball from the virtual image pass according to the position information of the eyeball.
4. The AR optical system of claim 1, wherein the coupling element is a liquid crystal grating;
the dimming module is configured to change the propagation direction of light rays emitted to an eyeball from the virtual image after passing through the liquid crystal grating according to the position information of the eyeball.
5. The AR optical system of any of claims 2 to 4, wherein the light modulation module further comprises an optical waveguide module configured to project light exiting the coupling element to an eyeball of a user.
6. The AR optical system of claim 5, wherein the optical waveguide module comprises an optical waveguide element having an entrance face, the coupling element disposed on a side of the optical waveguide element facing the entrance face.
7. The AR optical system according to claim 6, wherein the optical waveguide element has an input region and an output region arranged at a distance from each other, the input region being configured to enable coupling of light into the optical waveguide element, the output region being configured to enable coupling of light out of the optical waveguide element.
8. The AR optical system of claim 7, wherein the optical waveguide module further comprises a first grating element disposed on a side of the optical waveguide element facing away from the input surface to form the input region, and a second grating element disposed on a side of the optical waveguide element facing away from the input surface to form the output region.
9. The AR optical system of claim 8, wherein the coupling element and the first grating element are oppositely disposed with respect to the optical waveguide element.
10. The AR optical system of claim 8, wherein the eye tracking module is disposed on a side of the optical waveguide element facing the light incident surface, and the eye tracking module and the second grating element are disposed opposite to each other with respect to the optical waveguide element.
11. An AR display device, comprising:
a frame; and
the AR optical system of any one of claims 1 to 10, said AR optical system being fixed to said frame.
12. The AR display device of claim 11, further comprising a lens disposed on the frame, wherein a surface of the substrate facing away from the carrying surface is attached to the lens.
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| CN211086805U (en) * | 2019-10-14 | 2020-07-24 | 深圳市思坦科技有限公司 | Micro-L ED virtual imaging system, VR glasses and AR glasses |
| CN111123525A (en) * | 2020-01-21 | 2020-05-08 | 奥提赞光晶(山东)显示科技有限公司 | Holographic intelligent display device integrated with pupil tracking function and implementation method |
| CN111781722A (en) * | 2020-07-01 | 2020-10-16 | 业成科技（成都）有限公司 | Eyeball tracking structure, electronic device and intelligent glasses |
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