CN111474717A - Binocular near-eye display device and augmented reality display equipment - Google Patents
Binocular near-eye display device and augmented reality display equipment Download PDFInfo
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- CN111474717A CN111474717A CN202010375104.6A CN202010375104A CN111474717A CN 111474717 A CN111474717 A CN 111474717A CN 202010375104 A CN202010375104 A CN 202010375104A CN 111474717 A CN111474717 A CN 111474717A
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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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
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Abstract
The present disclosure relates to a binocular near-eye display device and augmented reality display apparatus, including: the optical-mechanical system is arranged on the incident surface of the polarization beam splitter prism and used for emitting collimated light to the polarization beam splitter prism; the polarization beam splitter prism is used for splitting the light rays emitted by the optical mechanical system into first polarized light and second polarized light, and reflecting and transmitting the first polarized light and the second polarized light through a beam splitting surface; the first phase retarder is used for converting the first polarized light into second polarized light and guiding the second polarized light into the first waveguide group; the polarized light conversion assembly is used for converting the second polarized light into first polarized light, reflecting the first polarized light to a light splitting surface of the polarization light splitting prism and reflecting the first polarized light to a third emergent surface through the light splitting surface; the second phase delay piece is arranged on a third emergent surface of the polarization splitting prism and used for converting the incident first polarized light into second polarized light and guiding the second polarized light into the second waveguide group; the first waveguide group and the second waveguide group are used for respectively coupling the incident light rays to human eyes.
Description
Technical Field
The present disclosure relates to the field of augmented reality display technologies, and in particular, to a binocular near-eye display device and augmented reality display apparatus.
Background
Near-eye display is that when an observer watches an external real object, information such as images or data superposed in a real environment can be watched, and the near-eye display provides a real-time field interaction function which is not available in the traditional display equipment and has no barrier with the real environment, so that brand-new visual experience is brought to users, and the near-eye display is widely applied to various fields.
In the current binocular near-eye display scheme, two optical machines are generally adopted to respectively emit light rays to corresponding ocular lens systems, so that binocular near-eye display is realized. And this scheme is applied to wear-type augmented reality display device, when AR glasses, generally all places the ray apparatus in two mirror legs departments, and mirror leg ray apparatus and waveguide often destroy the two mesh after turning over easily when wearing and close like. And because the size of ray apparatus is bigger than normal, can shelter from the visual field of wearing person left and right sides, seriously influence and wear the experience.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a binocular near-eye display device and an augmented reality display apparatus.
According to a first aspect of embodiments of the present disclosure, there is provided a binocular near-eye display device, comprising: the device comprises an optical mechanical system, a polarization beam splitter prism, a first phase retarder, a second phase retarder, a polarized light conversion component, a first waveguide group and a second waveguide group;
the optical-mechanical system is arranged on the incident surface of the polarization beam splitter prism and is used for emitting collimated light to the polarization beam splitter prism;
the polarization beam splitter prism is used for splitting the light rays emitted by the optical mechanical system into first polarized light and second polarized light, and reflecting and transmitting the first polarized light and the second polarized light through a beam splitting surface, wherein the first polarized light S enters a reflection light path, and the second polarized light P enters a transmission light path;
the first phase retarder is arranged on a first emergent surface of a reflection light path of the polarization beam splitter prism and used for converting the first polarized light into the second polarized light and guiding the second polarized light into the first waveguide group;
the polarized light conversion assembly is arranged on a second emergent surface of the transmission light path of the polarization beam splitter prism and used for converting the second polarized light into first polarized light, reflecting the first polarized light to a beam splitting surface of the polarization beam splitter prism and reflecting the first polarized light to a third emergent surface through the beam splitting surface;
the second phase retarder is arranged on the third emergent surface of the polarization beam splitter prism and used for converting the incident first polarized light into second polarized light and guiding the second polarized light into the second waveguide group;
the first waveguide set and the second waveguide set are used for respectively coupling incident light rays to human eyes.
In one embodiment, preferably, the first phase retarder comprises a half-wavelength phase retarder.
In one embodiment, preferably, the second phase retarder comprises a half-wavelength phase retarder.
In one embodiment, preferably, the polarized light conversion assembly includes: and the quarter-wave phase retarder and the reflector are sequentially arranged along the optical path.
In one embodiment, preferably, the first waveguide set includes: a first waveguide sheet, a first incoupling optical device and a first outcoupling optical device;
the first incoupling optical device is used for coupling the incident second polarized light into the first waveguide plate;
the first waveguide sheet is used for transmitting the second polarized light coupled in by the first coupling-in grating to the first coupling-out optical device in a total reflection mode;
the first outcoupling optical means for coupling out the second polarized light to the human eye.
In one embodiment, preferably, the second waveguide set includes: a second waveguide sheet, a second incoupling optical device and a second outcoupling optical device;
the second incoupling optical device is used for coupling the second polarized light which enters the second waveguide sheet;
the second waveguide sheet is used for transmitting the second polarized light coupled in by the second incoupling grating to the second outcoupling optical device in a total reflection mode;
the second outcoupling optical device grating is to couple out the second polarized light to a human eye.
In one embodiment, preferably, the first incoupling optical device and the second incoupling optical device comprise slanted surfaces or prisms, and the first outcoupling optical device and the second outcoupling optical device comprise semi-permeable membrane arrays.
In one embodiment, preferably, the first incoupling optical device and the second incoupling optical device comprise diffraction gratings, and the first outcoupling optical device and the second outcoupling optical device comprise diffraction gratings.
According to a second aspect of the embodiments of the present disclosure, there is provided an augmented reality display apparatus including the binocular near-eye display device of any one of the embodiments of the first aspect.
In one embodiment, preferably, the augmented reality display device may be a head-mounted augmented reality display device including: mirror holder, nose hold in the palm and two mirror legs, wherein, binocular near eyes display device's ray apparatus system set up in the nose holds in the palm the top.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the invention, the binocular display effect is realized by adopting one optical-mechanical system, the cost can be greatly reduced, the weight of augmented reality display equipment can be reduced, the light weight is realized, and the light energy utilization rate is improved by utilizing S light and P light.
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 of a binocular optical waveguide near-to-eye display in the prior art.
Fig. 2 is a schematic top view of a binocular near-eye display device according to an exemplary embodiment.
Fig. 3 is a schematic front view of a binocular near-eye display device according to an exemplary embodiment.
FIG. 4 is a schematic diagram illustrating one type of array light guide according to one exemplary embodiment.
FIG. 5 is a schematic diagram illustrating the principle of a diffractive light waveguide according to one 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 of a binocular near-eye display in the prior art.
As shown in fig. 1, in the existing binocular near-eye display scheme, two optical machines are generally used to emit light to corresponding eyepiece systems, so as to implement binocular near-eye display. And this scheme is applied to wear-type augmented reality display device, when AR glasses, generally all places the ray apparatus in two mirror legs departments, and mirror leg ray apparatus and waveguide often destroy the two mesh after turning over easily when wearing and close like. And because the size of ray apparatus is bigger than normal, can shelter from the visual field of wearing person left and right sides, seriously influence and wear the experience.
Therefore, in order to solve the technical problems, the technical scheme of the application is provided, so that the cost is reduced, the weight of the augmented reality display equipment is reduced, the light weight is realized, and the light energy utilization rate is improved.
As shown in fig. 2 and 3, the binocular near-eye display device of the present embodiment includes: the system comprises an optical mechanical system 21, a polarization beam splitter prism 22, a first phase retarder 23, a second phase retarder 24, a polarized light conversion component 25, a first waveguide group 26 and a second waveguide group 27;
the optical-mechanical system 21 is arranged on an incident surface of the polarization beam splitter prism 22 and is used for emitting collimated light to the polarization beam splitter prism 22;
the polarization splitting prism 22 is configured to split light rays incident from the optical mechanical system 21 into first polarized light and second polarized light, and reflect and transmit the first polarized light and the second polarized light through a splitting plane, where the first polarized light S enters a reflection light path, and the second polarized light P enters a transmission light path;
the first phase retarder 23 is disposed on the first exit surface of the reflection optical path of the polarization beam splitter prism 22, and is configured to convert the first polarized light into the second polarized light and guide the second polarized light into the first waveguide group 26;
the polarized light conversion assembly 25 is disposed on a second exit surface of the transmission light path of the polarization beam splitter prism 22, and is configured to convert the second polarized light into a first polarized light, reflect the first polarized light to a splitting surface of the polarization beam splitter prism 22, and reflect the first polarized light to a third exit surface through the splitting surface;
the second phase retarder 24, disposed on the third exit surface of the polarization beam splitter prism 22, is configured to convert the incident first polarized light into second polarized light and guide the second polarized light into the second waveguide group 27;
the first waveguide set 26 and the second waveguide set 27 are used for respectively coupling incident light rays to human eyes.
In this embodiment, adopt an optical-mechanical system to realize two mesh display effects, but greatly reduced cost to can reduce augmented reality display device's weight, realize the lightweight. In addition, the prior optical machine design filters S light or P light in order to reduce stray light, and the method greatly reduces the utilization rate of light energy. The invention simultaneously utilizes the characteristics of PBS (polarization beam splitter prism) to S light and P light to improve the light energy utilization rate, and can theoretically reduce half power consumption; moreover, after the binocular fusion images are adjusted in advance, the problem that the binocular fusion images are damaged by folding of the glasses legs when the glasses are worn is not easy to occur.
In one embodiment, the first phase retarder 23 preferably comprises a half-wavelength phase retarder.
In one embodiment, the second phase retarder 24 preferably comprises a one-half wavelength phase retarder.
In one embodiment, preferably, the polarized light conversion assembly 25 includes: a quarter-wave phase retarder 251 and a mirror 252 are disposed in order along the optical path.
In this embodiment, as shown in fig. 3, the light modulated by the optical machine includes 50% of S light and 50% of P light. When light passes through the PBS splitting surface, S light is totally reflected and propagates to the left, the first phase delay plate 23 is arranged on the left surface of the PBS, and the S light is changed into P light again and is guided into the waveguide group; the P light at the PBS splitting surface is totally transmitted downward to continue propagating, passes through the quarter-wave phase retardation plate 251 to reach the reflecting mirror 252, passes through the quarter-wave phase retardation plate 251 again after being reflected by the reflecting mirror, at this time, the P light is phase-retarded by 1/2 wavelength, becomes S light, propagates upward in the PBS, reaches the PBS splitting surface again, is totally reflected to propagate rightward, and the second phase retardation plate 24 is arranged on the right surface of the PBS to change the S light into the P light and guides the P light into the waveguide plate.
In one embodiment, preferably, the first waveguide set 26 includes: a first waveguide sheet, a first incoupling optical device and a first outcoupling optical device;
the first incoupling optical device is used for coupling the incident second polarized light into the first waveguide plate;
the first waveguide sheet is used for transmitting the second polarized light coupled in by the first coupling-in grating to the first coupling-out optical device in a total reflection mode;
the first outcoupling optical means for coupling out the second polarized light to the human eye.
In one embodiment, preferably, the second waveguide group 27 includes: a second waveguide sheet, a second incoupling optical device and a second outcoupling optical device;
the second incoupling optical device is used for coupling the second polarized light which enters the second waveguide sheet;
the second waveguide sheet is used for transmitting the second polarized light coupled in by the second incoupling grating to the second outcoupling optical device in a total reflection mode;
the second outcoupling optical means for coupling out the second polarized light to the human eye.
In one embodiment, preferably, the first incoupling optical device and the second incoupling optical device comprise slanted surfaces or prisms, and the first outcoupling optical device and the second outcoupling optical device comprise semi-permeable membrane arrays.
In this embodiment, the waveguide may be an array optical waveguide, as shown in fig. 4, the light wave of the optical machine is coupled into the waveguide sheet 42 through a reflection slope or a prism 41, etc., a plurality of semi-transparent and semi-reflective films 43 arranged regularly are arranged in the waveguide sheet, and the light wave is reflected by the semi-transparent and semi-reflective films 43 and coupled out of the waveguide sheet 42 to reach the human eye. The imaging quality of the geometric optical waveguide is good, and chromatic aberration is not easy to occur.
In one embodiment, preferably, the first incoupling optical device and the second incoupling optical device comprise diffraction gratings, and the first outcoupling optical device and the second outcoupling optical device comprise diffraction gratings.
In this embodiment, the waveguide may be a diffractive optical waveguide, as shown in fig. 5, when the light from the optical engine is incident on the incoupling optical device 51, the light is diffracted to generate another light, the angle of the light satisfies the total reflection condition (θ > arcsin (n0/n1), n1 is the refractive index of the waveguide, and n0 is the refractive index of air), and the light propagates in the waveguide sheet 52, and after reaching the light outcoupling region, the light is diffracted out by the incoupling optical device 53 to reach human eyes.
According to a second aspect of the embodiments of the present disclosure, there is provided an augmented reality display apparatus including the binocular near-eye display device of any one of the embodiments of the first aspect.
In one embodiment, preferably, the augmented reality display device may be a head-mounted augmented reality display device including: mirror holder, nose hold in the palm and two mirror legs, wherein, binocular near eyes display device's ray apparatus system set up in the nose holds in the palm the top.
The current binocular shows waveguide scheme and arranges the ray apparatus in two mirror legs departments, because the size of ray apparatus is bigger than normal, can shelter from the visual field about the person of wearing, seriously influences and wears experience. According to the invention, the optical machine is arranged above the nose support, and the glasses legs only need to be wired, so that the size difference of the glasses legs of normal glasses is the same, compared with the glasses legs of normal glasses, the visual fields at two sides of two eyes of a user are widened, and the wearing experience can be greatly improved.
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 within 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 binocular near-eye display device, comprising: the device comprises an optical mechanical system, a polarization beam splitter prism, a first phase retarder, a second phase retarder, a polarized light conversion component, a first waveguide group and a second waveguide group;
the optical-mechanical system is arranged on the incident surface of the polarization beam splitter prism and is used for emitting collimated light to the polarization beam splitter prism;
the polarization beam splitter prism is used for splitting the light rays emitted by the optical mechanical system into first polarized light and second polarized light, and reflecting and transmitting the first polarized light and the second polarized light through a beam splitting surface, wherein the first polarized light S enters a reflection light path, and the second polarized light P enters a transmission light path;
the first phase retarder is arranged on a first emergent surface of a reflection light path of the polarization beam splitter prism and used for converting the first polarized light into the second polarized light and guiding the second polarized light into the first waveguide group;
the polarized light conversion assembly is arranged on a second emergent surface of the transmission light path of the polarization beam splitter prism and used for converting the second polarized light into first polarized light, reflecting the first polarized light to a beam splitting surface of the polarization beam splitter prism and reflecting the first polarized light to a third emergent surface through the beam splitting surface;
the second phase retarder is arranged on the third emergent surface of the polarization beam splitter prism and used for converting the incident first polarized light into second polarized light and guiding the second polarized light into the second waveguide group;
the first waveguide set and the second waveguide set are used for respectively coupling incident light rays to human eyes.
2. The binocular near-eye display device of claim 1, wherein the first phase retarder comprises a one-half wavelength phase retarder.
3. The binocular near-eye display device of claim 1, wherein the second phase retarder comprises a one-half wavelength phase retarder.
4. The binocular near-eye display device of claim 1, wherein the polarized light conversion assembly comprises: and the quarter-wave phase retarder and the reflector are sequentially arranged along the optical path.
5. The binocular near-eye display device of claim 1, wherein the first waveguide set comprises: a first waveguide sheet, a first incoupling optical device and a first outcoupling optical device;
the first incoupling optical device is used for coupling the incident second polarized light into the first waveguide plate;
the first waveguide plate is used for transmitting the second polarized light coupled in by the first coupling-in optical device to the first coupling-out optical device in a total reflection mode;
the first outcoupling optical means for coupling out the second polarized light to the human eye.
6. The binocular near-eye display device of claim 1, wherein the second waveguide set comprises: a second waveguide sheet, a second incoupling optical device and a second outcoupling optical device;
the second incoupling optical device is used for coupling the second polarized light which enters the second waveguide sheet;
the second waveguide sheet is used for transmitting the second polarized light coupled in by the second coupling-in optical device to the second coupling-out grating in a total reflection mode;
the second outcoupling optical means for coupling out the second polarized light to the human eye.
7. The binocular near-eye display device of claim 1, wherein the first incoupling optic and the second incoupling optic comprise bevels or prisms, the first incoupling optic and the second incoupling optic comprising semi-permeable membrane arrays.
8. The binocular near-eye display device of claim 1, wherein the first incoupling optics and the second incoupling optics comprise diffraction gratings and the first outcoupling optics and the second outcoupling optics comprise diffraction gratings.
9. An augmented reality display device, comprising:
the binocular near-eye display device of any one of claims 1 to 8.
10. The augmented reality display device of claim 9, further comprising:
mirror holder, nose hold in the palm and two mirror legs, wherein, binocular near eyes display device's ray apparatus system set up in the nose holds in the palm the top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010375104.6A CN111474717A (en) | 2020-05-05 | 2020-05-05 | Binocular near-eye display device and augmented reality display equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010375104.6A CN111474717A (en) | 2020-05-05 | 2020-05-05 | Binocular near-eye display device and augmented reality display equipment |
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| CN202010375104.6A Pending CN111474717A (en) | 2020-05-05 | 2020-05-05 | Binocular near-eye display device and augmented reality display equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112130331A (en) * | 2020-10-28 | 2020-12-25 | 南京爱奇艺智能科技有限公司 | Optical display system and VR equipment |
| CN112130333A (en) * | 2020-10-28 | 2020-12-25 | 南京爱奇艺智能科技有限公司 | Waveguide display system and AR equipment for improving energy utilization rate |
| CN113341577A (en) * | 2021-08-06 | 2021-09-03 | 深圳珑璟光电科技有限公司 | Binocular near-to-eye display equipment |
| CN113985519A (en) * | 2021-12-24 | 2022-01-28 | 深圳铅笔视界科技有限公司 | Optical waveguide device, display device and display equipment |
| CN114153073A (en) * | 2021-11-29 | 2022-03-08 | 谷东科技有限公司 | Binocular near-to-eye display device based on single optical machine and augmented reality display equipment |
| WO2022143204A1 (en) * | 2020-12-29 | 2022-07-07 | 华为技术有限公司 | Augmented reality optical system and augmented reality glasses |
| 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 |
| WO2022222383A1 (en) * | 2021-04-22 | 2022-10-27 | 歌尔股份有限公司 | Display system, display glasses, and display system control method |
| CN115421238A (en) * | 2022-11-07 | 2022-12-02 | 北京驭光科技发展有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112130331A (en) * | 2020-10-28 | 2020-12-25 | 南京爱奇艺智能科技有限公司 | Optical display system and VR equipment |
| CN112130333A (en) * | 2020-10-28 | 2020-12-25 | 南京爱奇艺智能科技有限公司 | Waveguide display system and AR equipment for improving energy utilization rate |
| WO2022143204A1 (en) * | 2020-12-29 | 2022-07-07 | 华为技术有限公司 | Augmented reality optical system and augmented reality glasses |
| WO2022222383A1 (en) * | 2021-04-22 | 2022-10-27 | 歌尔股份有限公司 | Display system, display glasses, and display system control method |
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| CN113985519A (en) * | 2021-12-24 | 2022-01-28 | 深圳铅笔视界科技有限公司 | Optical waveguide device, display device and display equipment |
| CN113985519B (en) * | 2021-12-24 | 2022-04-08 | 深圳铅笔视界科技有限公司 | Optical waveguide device, display device and 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 |
| 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 |
| CN115421238A (en) * | 2022-11-07 | 2022-12-02 | 北京驭光科技发展有限公司 | Display device |
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Inventor after: Cui Haitao Inventor after: Li Yan Inventor before: Yong Haibo Inventor before: Cui Haitao Inventor before: Qian Jin Inventor before: Li Yan |