CN114647080A - Binocular waveguide near-to-eye display device with two-dimensional extended pupil and augmented reality display equipment - Google Patents
Binocular waveguide near-to-eye display device with two-dimensional extended pupil and augmented reality display equipment Download PDFInfo
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
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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
- G02B27/0101—Head-up displays characterised by optical features
- G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
- G02B5/1819—Plural gratings positioned on the same surface, e.g. array of gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
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Abstract
The invention relates to a binocular waveguide near-eye display device with a two-dimensional extended pupil and augmented reality display equipment, wherein the binocular waveguide near-eye display device with the two-dimensional extended pupil comprises: the optical-mechanical system loads and outputs images, and the collimated and corrected images are emitted to the coupling-in diffraction optical element group; the coupling diffraction optical element is formed by stacking and compounding a first polarizer holographic grating and a second polarizer holographic grating and is used for respectively coupling left-handed circularly polarized light beams and right-handed circularly polarized light beams; the vertical pupil expanding optical waveguide expands the left-handed circularly polarized light beams and the right-handed circularly polarized light beams in the vertical direction to couple a plurality of light beams to the glass substrate; the total reflector deflects the light rays emitted by the vertical pupil expanding optical waveguide by a preset angle and then emits the light rays into the glass substrate by a target angle which can meet the total reflection condition; the glass substrate transmits the light emitted by the vertical pupil expanding optical waveguide to the coupling-out grating in a total reflection mode; and the light-out grating is used for respectively coupling out light to the left eye and the right eye of a human.
Description
Technical Field
The utility model relates to an augmented reality shows technical field, especially relates to a binocular waveguide near-to-eye display device and augmented reality display equipment of two-dimentional pupil.
Background
The Augmented Reality (AR) technology is widely applied to the fields of military affairs, industrial design and manufacture, medical treatment, entertainment, education and the like by virtue of the unique characteristic that the projected image can be superposed to the real environment perceived by the user, influences or even changes some information interaction modes in production and life of various industries, and has great potential application value.
In an AR near-eye display system, the most core optical hardware part is a waveguide coupling element, and most of waveguide coupling elements can only realize exit pupil expansion of light in a waveguide transmission direction at present, an exit pupil perpendicular to the waveguide transmission direction is gradually reduced along with transmission of the light in a waveguide, in order to ensure an exit pupil diameter at a position where a human eye is worn, an exit pupil of an optical-mechanical collimation system in front of the waveguide element in the direction perpendicular to the waveguide transmission direction needs to be large enough, and if a large field angle is to be obtained, the volume of the device is increased, which affects user experience.
Disclosure of Invention
In order to overcome the problems in the related art, the present disclosure provides a binocular waveguide near-to-eye display device with a two-dimensional pupil expansion and an augmented reality display apparatus, thereby effectively reducing the volume and weight, and being suitable for being worn by a human body, and meanwhile, due to low process requirements and easy implementation, the manufacturing cost is greatly reduced.
According to a first aspect of embodiments of the present disclosure, there is provided a two-dimensional extended pupil binocular waveguide near-eye display device, comprising: the optical-mechanical system, the coupling-in diffraction optical element group, the vertical pupil expanding optical waveguide, the total reflector, the glass substrate and the coupling-out grating;
the optical-mechanical system is used for loading and outputting images, and emitting the collimated and corrected images to the coupling-in diffraction optical element group;
the coupling-in diffraction optical element is arranged on an emergent light path of the optical machine system and is formed by stacking and compounding a first polarizer holographic grating and a second polarizer holographic grating so as to couple in a left-handed circularly polarized light beam and a right-handed circularly polarized light beam respectively;
the vertical pupil expanding optical waveguide is arranged on the upper surface of one end of the glass substrate and is used for performing vertical light ray expansion on the left-handed circularly polarized light beam and the right-handed circularly polarized light beam which are coupled in by the coupling-in diffraction optical element so as to couple out a plurality of light rays to the glass substrate;
the total reflector is arranged in the glass substrate right below the vertical pupil expanding optical waveguide and is used for deflecting the light rays emitted by the vertical pupil expanding optical waveguide by a preset angle and then irradiating the light rays into the glass substrate by a target angle capable of meeting the total reflection condition;
the glass substrate is used for transmitting the light emitted by the vertical pupil expanding optical waveguide to the coupling-out grating in a total reflection mode;
the coupling-out grating is arranged on the upper surface of the other end of the glass substrate, is used for comprising a left-eye coupling-out diffraction optical element and a right-eye coupling-out diffraction optical element, and is used for coupling out light to the left eye and the right eye of a person respectively, wherein the left-eye coupling-out diffraction optical element comprises a third polarizer holographic grating, and the right-eye coupling-out diffraction optical element comprises a fourth polarizer holographic grating.
In one embodiment, preferably, the vertical pupil expanding optical waveguide comprises: the non-polarization light splitting film array comprises a plurality of non-polarization light splitting film array substrates which are obliquely arranged from top to bottom along the vertical direction.
In one embodiment, preferably, the plurality of non-polarizing beam splitting film array substrates are arranged in parallel and at equal intervals, the interval is a preset interval, an inclination angle between the non-polarizing beam splitting film array substrate and the waveguide plate substrate is a preset angle, the reflectivity of the plurality of non-polarizing beam splitting film array substrates increases sequentially from top to bottom along the vertical direction, and the non-polarizing beam splitting film array substrates can simultaneously couple out the S-polarized light wave and the P-polarized light wave.
In one embodiment, preferably, the first polarizer holographic grating comprises a first left-handed polarizer holographic grating and the second polarizer holographic grating comprises a first right-handed polarizer holographic grating.
In one embodiment, preferably, the third polarizer holographic grating comprises a second right-handed polarizer holographic grating and the fourth polarizer holographic grating comprises a second left-handed polarizer holographic grating.
In one embodiment, preferably, the first left-handed polarizer holographic grating and the second left-handed polarizer holographic grating are mirror symmetric, and the first right-handed polarizer holographic grating and the second right-handed polarizer holographic grating are mirror symmetric.
In one embodiment, preferably, the polarizer holographic grating is a novel polarizer holographic grating based on liquid crystal material.
In one embodiment, preferably, the opto-mechanical system comprises: a micro-image source system and a collimation system;
the micro image source system is arranged on a main optical axis of the collimation system and used for loading and outputting images;
the collimation system is positioned on the light emergent surface of the microimage source system and is used for collimating and correcting the image output by the microimage source system and then coupling the image into the vertical pupil expanding optical waveguide through the coupling-in diffraction optical element.
In one embodiment, preferably, the image source of the microimage source system comprises an unpolarized image source.
According to a second aspect of the embodiments of the present disclosure, there is provided an augmented reality display apparatus including:
the two-dimensional extended pupil binocular waveguide near-eye display device of any one of the first aspect.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
1) the two-dimensional pupil-expanding binocular display waveguide system is simple in structure, capable of effectively reducing the size and the weight, suitable for being worn by a human body, low in process requirement and easy to achieve, and greatly reduces the manufacturing cost.
2) The invention adopts the coupling-in diffraction optical element group formed by stacking and compounding the polarization body holographic gratings, realizes the simultaneous diffraction of the left-handed polarized light beam and the right-handed polarized light beam, can realize binocular display by only using a single image source, does not need to be respectively provided with an image source for the left eye and the right eye, and undoubtedly has certain advantages on the volume, the weight, the power consumption and the like of the system.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram illustrating a two-dimensional extended pupil binocular waveguide near-eye display device according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating a detailed structure of a two-dimensional extended-pupil binocular waveguide near-eye display device according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic diagram illustrating a two-dimensional extended pupil binocular waveguide near-eye display device according to an exemplary embodiment.
As shown in fig. 1 and 2, a two-dimensional extended pupil binocular waveguide near-eye display device includes: the optical-mechanical system, the coupling-in diffraction optical element group, the vertical pupil expanding optical waveguide, the total reflector, the glass substrate and the coupling-out grating;
the optical-mechanical system is used for loading and outputting images, and emitting the collimated and corrected images to the coupling-in diffraction optical element group;
in one embodiment, preferably, the opto-mechanical system comprises: a micro-image source system and a collimation system;
the micro image source system is arranged on a main optical axis of the collimation system and used for loading and outputting images;
the collimation system is positioned on the light emergent surface of the microimage source system and is used for collimating and correcting the image output by the microimage source system and then coupling the image into the vertical pupil expanding optical waveguide through the coupling diffraction optical element. The collimating system may consist of several lenses, and the material of the lenses may be glass or PMMA.
The coupling-in diffraction optical element is arranged on an emergent light path of the optical machine system and is formed by stacking and compounding a first polarizer holographic grating PVG1 and a second polarizer holographic grating PVG2 so as to couple in left-handed circularly polarized light beams and right-handed circularly polarized light beams respectively; among them, the helical directions of chiral dopants in PVG1 and PVG2 materials are orthogonal, so that the liquid crystal molecules therein rotate in opposite directions but the periodicity remains the same. Because the polarization property of the polarizer holographic grating is that the polarizer holographic grating only diffracts circularly polarized light in a single rotation direction, and the polarizer holographic grating directly transmits circularly polarized light in another orthogonal rotation direction, the PVG1_ in (left-handed) and the PVG2_ in (right-handed) can respectively diffract a left-handed circularly polarized light beam and a right-handed circularly polarized light beam, so that high-efficiency waveguide coupling is realized.
The vertical pupil expanding optical waveguide is arranged on the upper surface of one end of the glass substrate and is used for performing vertical light ray expansion on the left-handed circularly polarized light beam and the right-handed circularly polarized light beam which are coupled in by the coupling-in diffraction optical element so as to couple out a plurality of light rays to the glass substrate;
the total reflector is arranged in the glass substrate right below the vertical pupil expanding optical waveguide and is used for deflecting the light rays emitted by the vertical pupil expanding optical waveguide by a preset angle and then irradiating the light rays into the glass substrate by a target angle capable of meeting the total reflection condition;
the glass substrate is used for transmitting the light emitted by the vertical pupil expanding optical waveguide to the coupling-out grating in a total reflection mode;
the coupling-out grating is arranged on the upper surface of the other end of the glass substrate, comprises a left-eye coupling-out diffraction optical element and a right-eye coupling-out diffraction optical element, and is used for coupling out light to the left eye and the right eye of a person respectively, wherein the left-eye coupling-out diffraction optical element comprises a third polarizer holographic grating, and the right-eye coupling-out diffraction optical element comprises a fourth polarizer holographic grating.
In one embodiment, preferably, the vertical pupil expanding optical waveguide comprises: the non-polarization light splitting film array comprises a plurality of non-polarization light splitting film array substrates which are obliquely arranged from top to bottom along the vertical direction.
In one embodiment, preferably, the plurality of non-polarizing beam splitting film array substrates are arranged in parallel and at equal intervals, the interval is a preset interval, an inclination angle between the non-polarizing beam splitting film array substrate and the waveguide plate substrate is a preset angle, the reflectivity of the plurality of non-polarizing beam splitting film array substrates increases sequentially from top to bottom along the vertical direction, and the non-polarizing beam splitting film array substrates can simultaneously couple out the S-polarized light wave and the P-polarized light wave.
Wherein the thickness of the substrate of the vertical pupil expanding optical waveguide plate is 1.5mm-2 mm. The plurality of non-polarizing splitting film array substrates may be five non-polarizing splitting film array substrates. The reflectance of the five non-polarizing splitting film array substrates sequentially increased from top to bottom in the vertical direction, which are 1/5, 1/4, 1/3, 1/2, and 1, respectively. Through the optimized design of the film system, the five non-polarized light splitting film array substrates can simultaneously carry out light coupling out on S-polarized light waves (polarization vectors are vertical to the plane) and P-polarized light waves (polarization vectors are in the plane), and the uniformity of emergent brightness can be ensured.
In one embodiment, preferably, the first polarizer holographic grating comprises a first left-handed polarizer holographic grating and the second polarizer holographic grating comprises a first right-handed polarizer holographic grating.
In one embodiment, preferably, the third polarizer holographic grating comprises a second right-handed polarizer holographic grating and the fourth polarizer holographic grating comprises a second left-handed polarizer holographic grating.
In one embodiment, preferably, the first left-handed polarizer holographic grating and the second left-handed polarizer holographic grating are mirror symmetric, and the first right-handed polarizer holographic grating and the second right-handed polarizer holographic grating are mirror symmetric.
The coupled-out polarizer holographic grating of the left eye part is a right-handed polarizer holographic grating PVG2_ out and is in mirror symmetry with the coupled-in polarizer holographic grating PVG2_ in so as to eliminate dispersion; likewise, the out-coupling polarizer holographic grating of the right-eye part is a left-handed polarizer holographic grating PVG1_ out and is mirror symmetric to the in-coupling polarizer holographic grating PVG1_ in to eliminate dispersion.
In one embodiment, preferably, the polarizer holographic grating is a novel polarizer holographic grating based on liquid crystal material.
In one embodiment, preferably, the image source of the microimage source system comprises an unpolarized image source.
The working principle of the two-dimensional pupil-expanding binocular waveguide near-to-eye display device is as follows: the light emitted by the micro-image source system is incident on the coupling-in diffraction optical element after passing through the collimation system. Because the micro image source system generally adopts an OLED display screen, the light beam emitted by such an image source system is unpolarized light, and the unpolarized light can be regarded as including equal amounts of left-handed polarized light and right-handed polarized light components. The unpolarized light beams emitted by the micro-image source system are diffracted by the coupling diffraction optical element group to emit equal amounts of left-handed polarized light beams and right-handed polarized light beams, and are diffracted to enter the vertical pupil expanding optical waveguide towards two directions respectively. The vertical pupil expanding optical waveguide expands the diffracted and coupled two beams of left-handed circularly polarized light beams and right-handed circularly polarized light beams in the vertical direction to couple out a plurality of beams of light to the glass substrate. By optimizing and controlling the splitting ratio of the film layer of the non-polarization splitting film array substrate, the generated splitting beams can carry the same image information and intensity. And then the expanded light beams are coupled into the glass substrate after being reflected by a total reflector which is directly below the vertical pupil-expanding optical waveguide and embedded in the glass substrate. The light is transmitted forwards to the coupling-out grating in a form of total reflection on the glass substrate, and the coupling-out gratings are respectively composed of a polarizer holographic grating, wherein the coupling-out polarizer holographic grating of the left eye part is a right-handed polarizer holographic grating, the coupling-out polarizer holographic grating of the right eye part is a left-handed polarizer holographic grating, and is respectively in mirror symmetry with the coupling-in diffraction optical element group, so that the transmission beams in the last two directions are respectively coupled out to the left eye and the right eye by the coupling-out gratings for imaging. Therefore, the binocular display can be realized by using a single image source, and the left eye and the right eye are not required to be provided with one image source respectively, which undoubtedly has certain advantages on the volume, the weight, the power consumption and the like of the system.
According to a second aspect of the embodiments of the present disclosure, there is provided an augmented reality display apparatus including:
the two-dimensional extended pupil binocular waveguide near-eye display device of any one of the first aspect.
Based on the same concept, the embodiment of the present disclosure further provides an augmented reality display apparatus, including the binocular waveguide near-to-eye display device in any one of the above technical solutions. The augmented reality display device may be an AR glasses or an AR helmet, or the like.
It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A two-dimensional extended-pupil binocular waveguide near-to-eye display device, comprising:
the optical-mechanical system, the coupling-in diffraction optical element group, the vertical pupil expanding optical waveguide, the total reflector, the glass substrate and the coupling-out grating;
the optical-mechanical system is used for loading and outputting images, and emitting the collimated and corrected images to the coupling-in diffraction optical element group;
the coupling-in diffraction optical element is arranged on an emergent light path of the optical machine system and is formed by stacking and compounding a first polarizer holographic grating and a second polarizer holographic grating so as to couple in a left-handed circularly polarized light beam and a right-handed circularly polarized light beam respectively;
the vertical pupil expanding optical waveguide is arranged on the upper surface of one end of the glass substrate and is used for performing vertical light ray expansion on the left-handed circularly polarized light beam and the right-handed circularly polarized light beam which are coupled in by the coupling-in diffraction optical element so as to couple out a plurality of light rays to the glass substrate;
the total reflector is arranged in the glass substrate right below the vertical pupil expanding optical waveguide and is used for deflecting light rays emitted by the vertical pupil expanding optical waveguide by a preset angle and then irradiating the light rays into the glass substrate by a target angle capable of meeting total reflection conditions;
the glass substrate is used for transmitting the light emitted by the vertical pupil expanding optical waveguide to the coupling-out grating in a total reflection mode;
the coupling-out grating is arranged on the upper surface of the other end of the glass substrate, is used for comprising a left-eye coupling-out diffraction optical element and a right-eye coupling-out diffraction optical element, and is used for coupling out light to the left eye and the right eye of a person respectively, wherein the left-eye coupling-out diffraction optical element comprises a third polarizer holographic grating, and the right-eye coupling-out diffraction optical element comprises a fourth polarizer holographic grating.
2. The two-dimensional mydriatic binocular waveguide near-eye display device of claim 1, wherein the vertical mydriatic optical waveguide comprises: the non-polarization light splitting film array comprises a plurality of non-polarization light splitting film array substrates which are obliquely arranged from top to bottom along the vertical direction.
3. The binocular waveguide near-eye display device with the two-dimensional pupil expansion according to claim 2, wherein the plurality of unpolarized spectroscopic film array substrates are arranged in parallel at equal intervals, the interval is a preset interval, the inclination angle between the unpolarized spectroscopic film array substrate and the waveguide plate substrate is a preset angle, the reflectivity of the plurality of unpolarized spectroscopic film array substrates increases sequentially from top to bottom along the vertical direction, and the plurality of unpolarized spectroscopic film array substrates can simultaneously couple out S-polarized light waves and P-polarized light waves.
4. The two-dimensional extended-pupil binocular waveguide near-eye display device of claim 1, wherein the first polarizer holographic grating comprises a first left-handed polarizer holographic grating and the second polarizer holographic grating comprises a first right-handed polarizer holographic grating.
5. The two-dimensional extended-pupil binocular waveguide near-eye display device of claim 4, wherein the third polarizer holographic grating comprises a second right-handed polarizer holographic grating and the fourth polarizer holographic grating comprises a second left-handed polarizer holographic grating.
6. The two-dimensional extended-pupil binocular waveguide near-to-eye display device of claim 5, wherein the first left-handed polarizer holographic grating and the second left-handed polarizer holographic grating are mirror symmetric, and the first right-handed polarizer holographic grating and the second right-handed polarizer holographic grating are mirror symmetric.
7. The two-dimensional extended-pupil binocular waveguide near-to-eye display device of claim 1, wherein the polarizer holographic grating is a novel polarizer holographic grating based on liquid crystal materials.
8. The two-dimensional, extended-pupil, binocular waveguide, near-to-eye display device of claim 1, wherein the opto-mechanical system comprises: a micro-image source system and a collimation system;
the micro image source system is arranged on a main optical axis of the collimation system and used for loading and outputting images;
the collimation system is positioned on the light emergent surface of the microimage source system and is used for collimating and correcting the image output by the microimage source system and then coupling the image into the vertical pupil expanding optical waveguide through the coupling-in diffraction optical element.
9. The two-dimensional mydriatic binocular waveguide near-eye display device of claim 8, wherein the image source of the microimage source system comprises a non-polarizing image source.
10. An augmented reality display device, comprising:
the two-dimensional extended-pupil binocular waveguide near-eye display device of any one of claims 1 to 9.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210294101A1 (en) * | 2020-03-20 | 2021-09-23 | Envisics Ltd | Display device and system |
| CN115016128A (en) * | 2022-08-08 | 2022-09-06 | 南京平行视界技术有限公司 | Holographic waveguide HUD device based on polarizer |
| CN115113323A (en) * | 2022-07-04 | 2022-09-27 | 北京驭光科技发展有限公司 | Diffractive optical waveguide and display device |
| CN115202059A (en) * | 2022-08-17 | 2022-10-18 | 谷东科技有限公司 | High-brightness binocular waveguide display device and augmented reality display equipment |
| CN115220236A (en) * | 2022-08-17 | 2022-10-21 | 谷东科技有限公司 | High-luminous-efficiency binocular holographic waveguide near-to-eye display device and augmented reality display equipment |
| CN115220235A (en) * | 2022-08-17 | 2022-10-21 | 谷东科技有限公司 | Binocular waveguide near-to-eye display device and augmented reality display equipment |
| CN115236788A (en) * | 2022-06-27 | 2022-10-25 | 北京灵犀微光科技有限公司 | Optical waveguide device, near-to-eye display device and smart glasses |
| CN115933187A (en) * | 2022-10-10 | 2023-04-07 | 重庆邮电大学 | Polarizer holographic color binocular waveguide display system |
| GB2621117A (en) * | 2022-07-29 | 2024-02-07 | Envisics Ltd | Hologram waveguiding |
| CN118112812A (en) * | 2024-04-23 | 2024-05-31 | 北京灵犀微光科技有限公司 | Array optical waveguide group and near-to-eye display device |
| CN118131387A (en) * | 2024-04-17 | 2024-06-04 | 江西凤凰光学科技有限公司 | Optical waveguide display system and near-to-eye display device |
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| US20210294101A1 (en) * | 2020-03-20 | 2021-09-23 | Envisics Ltd | Display device and system |
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| GB2621117B (en) * | 2022-07-29 | 2024-09-25 | Envisics Ltd | Hologram waveguiding |
| GB2621117A (en) * | 2022-07-29 | 2024-02-07 | Envisics Ltd | Hologram waveguiding |
| CN115016128A (en) * | 2022-08-08 | 2022-09-06 | 南京平行视界技术有限公司 | Holographic waveguide HUD device based on polarizer |
| CN115016128B (en) * | 2022-08-08 | 2022-12-02 | 南京平行视界技术有限公司 | Holographic waveguide HUD device based on polarizer |
| CN115202059B (en) * | 2022-08-17 | 2024-02-13 | 谷东科技有限公司 | High-brightness binocular waveguide display device and augmented reality display equipment |
| CN115220235B (en) * | 2022-08-17 | 2023-08-04 | 谷东科技有限公司 | Binocular waveguide near-eye display device and augmented reality display equipment |
| CN115220235A (en) * | 2022-08-17 | 2022-10-21 | 谷东科技有限公司 | Binocular waveguide near-to-eye display device and augmented reality display equipment |
| CN115220236B (en) * | 2022-08-17 | 2024-04-12 | 谷东科技有限公司 | High-light-efficiency binocular holographic waveguide near-eye display device and augmented reality display equipment |
| CN115220236A (en) * | 2022-08-17 | 2022-10-21 | 谷东科技有限公司 | High-luminous-efficiency binocular holographic waveguide near-to-eye display device and augmented reality display equipment |
| CN115202059A (en) * | 2022-08-17 | 2022-10-18 | 谷东科技有限公司 | High-brightness binocular waveguide display device and augmented reality display equipment |
| CN115933187A (en) * | 2022-10-10 | 2023-04-07 | 重庆邮电大学 | Polarizer holographic color binocular waveguide display system |
| CN118131387A (en) * | 2024-04-17 | 2024-06-04 | 江西凤凰光学科技有限公司 | Optical waveguide display system and near-to-eye display device |
| CN118112812A (en) * | 2024-04-23 | 2024-05-31 | 北京灵犀微光科技有限公司 | Array optical waveguide group and near-to-eye display device |
| CN118112812B (en) * | 2024-04-23 | 2024-07-02 | 北京灵犀微光科技有限公司 | Array optical waveguide group and near-to-eye display device |
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