CN210776045U - Optical waveguide structure and augmented reality equipment - Google Patents
Optical waveguide structure and augmented reality equipment Download PDFInfo
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- CN210776045U CN210776045U CN201922234192.3U CN201922234192U CN210776045U CN 210776045 U CN210776045 U CN 210776045U CN 201922234192 U CN201922234192 U CN 201922234192U CN 210776045 U CN210776045 U CN 210776045U
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Abstract
The utility model discloses an optical waveguide structure and augmented reality equipment, this optical waveguide structure includes: the color-changing element is arranged on the waveguide substrate and is positioned at the same end of the waveguide substrate as the coupling-out element and attached to the surface of the waveguide substrate at the side far away from human eyes, and the color-changing element is a color-changing element with adjustable color or/and transmittance. The utility model discloses a set up a color change element on the waveguide substrate, add optical properties such as the colour and the transmittance that the power state controlled the color change element through control color change element, can effectively promote the display frame contrast under the condition that the ambient light of different intensity exists, guarantee the luminance ratio of the virtual picture of augmented reality equipment and external true picture, the reinforcing is telepresence to lens outward appearance colour is adjustable, increases that the lens is pleasing to the eye and practicality, protection user privacy.
Description
Technical Field
The utility model relates to a AR shows technical field, especially relates to an optical waveguide structure and augmented reality equipment.
Background
Smart glasses based on Augmented Reality (Augmented Reality) have attracted attention in recent years as wearable smart devices. In the optical system of the AR glasses, the information of an image source is amplified by the relay optical system, then is projected on the AR lens and enters human eyes, and meanwhile, external scenes in front can also enter the human eyes through the lens, namely, the human eyes can see the image source and the external scene information through the lens at the same time. AR glasses enhance the user's perception of the world by displaying virtual information that matches the real world.
The AR lens is a key technical point as an optical display element, and the combination structure of the grating and the optical waveguide is an advocated AR lens optical display scheme. Akonia, Dispellix, waveoptics, magic leap, Microsoft and other companies and research institutions are developing this approach. The optical principle of this scheme: the light of an image source is changed into parallel light to reach a first grating (coupling input grating) after passing through a collimating lens, the transmission direction of the parallel light is changed by the diffraction effect of the grating, the light is transmitted along a grating substrate (namely a waveguide substrate) because a diffracted light beam meets the total reflection condition, and when the parallel light is transmitted to a second grating (coupling output grating), the coupling output grating recombines the dispersed light, so that the dispersed light is output outside the optical waveguide structure again according to the coupling input direction.
Because of the diffractive optical properties of the grating, the optical waveguide structure has a great challenge in terms of display brightness and contrast, and in order to improve the brightness and contrast of a displayed image, a mode of adding a light shield or highlighting a display source is generally adopted. A common solution is to add a light-shielding lens with constant transmittance outside the display lens. Such as microsoft HoloLens, Magic leap one, etc.
However, in the common additional lens hood scheme, since the transmittance of the lens hood is constant, the light part of the external environment is absorbed by the lens hood, and in the application scene of the strong light environment and the special environment light, the user cannot see the external picture clearly, which affects the practicability and the user experience of the glasses. Meanwhile, as an element of a wearable device, the AR glasses are generally required to have the characteristics of compact structure and beautiful appearance, but the additional lens hood scheme is not beneficial to the compact structure of the AR eyes and influences the beautiful appearance. In addition, as an information display element, the comfort of an observer and the integrity of acquired information are affected by the brightness of displayed information, and the displayed information is dark due to the additional light shield scheme, so that the user has poor viewing experience and the integrity of the information is difficult to acquire.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough, providing a control light intensity of environment's optical waveguide structure to solve among the current optical waveguide structure lens hood transmittance invariable and lead to the uncontrollable problem of environment luminous intensity.
An object of the utility model is to provide an augmented reality equipment still to solve the current problem that AR equipment user experience feels not good.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an optical waveguide structure, include: the color-changing device comprises a waveguide substrate, an incoupling element, an outcoupling element and a color-changing element, wherein the incoupling element is arranged at one end of the waveguide substrate, the outcoupling element is arranged at the other end of the waveguide substrate, the color-changing element is arranged on the waveguide substrate, is positioned at the same end of the waveguide substrate as the outcoupling element and is attached to the surface of the waveguide substrate at the side far away from human eyes, and the color-changing element is a color-changing element with adjustable color or/and transmittance.
Further, the color-changing element is of an electrochromic film structure.
Further, the color-changing element is completely attached to the waveguide substrate by adopting low-refractive-index optical glue or an isolating film; alternatively, the first and second electrodes may be,
the color-changing element is attached to the waveguide substrate in a non-full-attaching mode, the color-changing element is attached to the waveguide substrate through an adhesive tape, and an air gap exists between an adhesive tape area arranged on the color-changing element and the waveguide substrate.
Furthermore, the optical waveguide structure further comprises a protective base material, the protective base material covers the waveguide substrate and the color-changing element, and the protective base material is a glass substrate.
Further, when the color-changing element is attached to the waveguide substrate in a non-full-attaching mode, attaching adhesive layers are attached to two end portions of the color-changing element, and the end portions of the color-changing element and the waveguide substrate are connected through the adhesive layers.
Further, the area of the color changing element is equal to or smaller than the area of the waveguide substrate surface.
Furthermore, the color-changing element comprises a plurality of first sub color-changing elements, the plurality of first sub color-changing elements are arranged on the waveguide substrate, and the first sub color-changing elements are positioned on the same plane.
Furthermore, the color-changing element comprises a plurality of second sub color-changing elements, the plurality of second sub color-changing elements are laminated and attached together, and each second sub color-changing element is arranged corresponding to one color wavelength.
The utility model also provides an optical waveguide structure, including a plurality of optical waveguide structures of range upon range of setting, this a plurality of optical waveguide structures are aforementioned optical waveguide structure.
The utility model also provides an optical waveguide structure, including first optical waveguide structure and a plurality of second optical waveguide structure, first optical waveguide structure and a plurality of second optical waveguide structure range upon range of setting and first optical waveguide structure is close to this side of people's eye; the first optical waveguide structure is the optical waveguide structure; the second optical waveguide structure includes: the color-changing element is arranged on the surface of one side of the waveguide substrate far away from human eyes, and light rays from an image source are coupled into the waveguide substrate of the first optical waveguide structure through the coupling-in element of the first optical waveguide structure and are coupled out to human eyes through the coupling-out element of the first optical waveguide structure.
The utility model also provides an augmented reality equipment, including foretell optical waveguide structure.
According to the above technical scheme, the utility model provides an optical waveguide structure and augmented reality equipment, through set up a color change component on the waveguide substrate, add optical properties such as the colour and the transmissivity that the power state controlled the color change component through control color change component, can be under the condition that the ambient light of different intensity exists, effectively promote display image contrast, compensate augmented reality equipment display image contrast not enough and the relatively poor shortcoming of display effect, under outdoor or the strong light condition, light such as at the at utmost absorption ultraviolet ray, guarantee the luminance ratio of augmented reality equipment virtual picture and external true picture, the reinforcing is telepresence, and lens outward appearance colour is adjustable, it is pleasing to the eye and the practicality to increase the lens, protect user privacy.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an optical waveguide structure according to the present invention.
Fig. 2 is the structure diagram of the utility model of the light waveguide structure environment light entrance periphery sets up the laminating glue film.
Fig. 3 is a schematic structural diagram of another embodiment of the optical waveguide structure of the present invention.
Fig. 4 is a schematic structural diagram of another embodiment of the optical waveguide structure of the present invention.
Fig. 5 is a schematic structural diagram of a fourth embodiment of the optical waveguide structure of the present invention.
Fig. 6 is a schematic structural diagram of a fifth embodiment of the optical waveguide structure of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Based on there are the problem in the aspect of display effect and the practicality in the current AR lens set forth in the background art, the utility model provides a controllable optical waveguide structure of ambient light intensity through setting up the color change element to thereby control color change element's the colour and the transmittance of controlling color change element with the electric state and control the ambient light intensity of coming in, thereby effectively promote display contrast, reinforcing telepresence. Referring to fig. 1, the optical waveguide structure specifically includes: the optical waveguide device comprises a waveguide substrate 8, an incoupling element 4, an outcoupling element 6 and a color-changing element 2, wherein the incoupling element 4 is arranged at one end of the optical waveguide structure 8 and is used for coupling light rays which are emitted by an image source 3 and are converted into parallel light by a collimating lens into the waveguide substrate 8, the incoupling element 4 is a grating, and the grating structure of the grating can be a holographic optical element, namely a bulk phase grating, or can also be a diffractive optical element, namely a surface relief grating. The coupling-out element 6 is disposed at the other end of the waveguide substrate 8, and is configured to couple out the total reflection light wave propagating in the waveguide substrate 8, where the coupling-out element 6 is a grating, and may be a holographic optical element-a bulk phase grating, or may also be a diffractive optical element-a surface relief grating. The color-changing element 2 is arranged on the waveguide substrate 8 and is positioned at the same end of the waveguide substrate 8 as the coupling-out element, specifically, is arranged at the side of the waveguide substrate 8 far away from the human eyes 5, the area of the color-changing element 2 is equal to or smaller than the area of the surface of the waveguide substrate 8, and when the area of the color-changing element 2 is equal to or larger than the area of the imaging area of the waveguide substrate 8, the whole visual field range of a user can change color; when the area of the color changing element 2 is smaller than the area of the imaging region of the waveguide substrate 8, only a part of the visual field range may be color-changed at this time. The color changing element 2 may have optical properties such as color and transmittance. By adjusting the color and transmittance of the color changing element 2, the beauty and practicability of the whole augmented reality device (AR lens) can be increased, and the privacy of users can be protected.
Specifically, the color-changing element 2 adopts an electrochromic film structure, controls the power-on state to control the color depth of the color-changing element 2 to weaken the ambient light, and adjusts the additional voltage of the color-changing element 2 to be matched with the brightness of display content of the AR glasses, so that the negative influence of the ambient light on the display effect of the augmented reality device is weakened. In order to make the contrast between the virtual image brightness and the external real image satisfy a better visual effect, the brightness of the light output by the image source 3 needs to be 3-4 times of the brightness of the external real image. The utility model provides an adjustable ambient light's that gets into of optical waveguide structure luminance, therefore, image source 3 need not to send the light of hi-lite, and its image light that sends the low luminance also can obtain fine visual effect, can reduce whole optical system consumption. Therefore, the utility model provides an augmented reality equipment can reach the consumption that reduces whole system and reach the purpose of better demonstration contrast simultaneously through adjusting external environment light.
The electrochromic film layer structure is a thin film structure made of electrochromic materials, the thickness of the thin film structure is 50-200 microns, and the thin film structure is soft. The electrochromic film is composed of a transparent substrate material, a transparent conductive layer, an electrochromic layer, an electrolyte layer, an ion storage layer and a transparent conductive layer from top to bottom, wherein the material selected for the electrochromic layer can comprise various organic materials and inorganic material combinations, such as titanium dioxide (TiO2), Indium Tin Oxide (ITO) mainly used as a transparent electrode material, magnesium or calcium alloy, and the ITO conductive layer can also be realized by using silver nanowires, silver salts or silver nanoparticles capable of replacing ITO. When the electrochromic layer structure works, voltage is applied between the two transparent conducting layers, and charges or ions are injected or extracted from the electrochromic layer, so that reversible change is generated between a coloring state with low transmittance and a decoloring state with high transmittance, and the reversible change of color and transparency is shown in appearance, and the adjustability of the display color of the color-changing element and the adjustability of the light transmittance are realized.
In order to improve the compactness and the aesthetic appearance of the AR lens, the coupling-in element 4 and the coupling-out element 6 are attached to the same side of the waveguide substrate 8 and are arranged on the side of the optical waveguide structure 8 close to the human eye 5, and the color-changing element 2 is attached to the other side (the side far away from the human eye 5) opposite to the coupling-out element 6.
The combination of the color changing element 2 and the waveguide substrate includes the following two ways:
the first method comprises the following steps: the color-changing element 2 is completely attached to the waveguide substrate 8 by adopting low-refractive-index optical glue or an isolating film. When the color-changing element 2 and the waveguide substrate 8 are mutually attached, the influence of the optical glue or the isolating film with low refractive index on the optical path in the waveguide substrate 8 can be reduced.
And the second method comprises the following steps: the color-changing element 2 is attached to the waveguide substrate 8 in a non-full-attaching mode, the periphery of the color-changing element 2 is attached to the waveguide substrate 8 by using an adhesive tape (such as a hard annular adhesive tape), the color-changing element 2 is not provided with an adhesive tape region, and an air layer, such as an air layer 9 shown in fig. 2, is formed between the waveguide substrate 8. With reference to fig. 2, when the non-full-lamination connection is adopted, a bonding glue layer 12 is further attached to two end portions of the color changing element 2, and the bonding glue layer 12 connects the end portions of the color changing element with the waveguide substrate to isolate the flow of the air layer.
The design mode of the color-changing element 2 is not limited to the above two modes, as long as the color-changing element 2 can be fixed on the waveguide substrate 8, and the environment light entering the augmented reality device can not be blocked.
Of course, it is understood that the optical waveguide structure may further include a protective substrate 13, after the color-changing element 2 is connected to the waveguide substrate 8 in the above manner, the protective substrate 13 covers the waveguide substrate 8 and the color-changing element 2 to protect the optical waveguide structure, and the protective substrate is a glass substrate, such as ultra-thin glass.
The waveguide substrate 8 may be made of an inorganic glass material such as optical quartz glass (JGS1, JGS2, BK7, etc.); or organic thermoplastics, such as Polycarbonate (PC), polymethyl methacrylate (PMMA); or transparent thermoset materials such as organic glass based on acrylates, polyurethanes, polyureas, polythiourethanes, and Allyl Diglycol Carbonate (ADC), among others.
As another alternative embodiment, referring to fig. 3, the color-changing element 2 ″ includes a plurality of first sub color-changing elements 22, the plurality of first sub color-changing elements 22 are disposed on the waveguide substrate 8, the first sub color-changing elements 22 are disposed on the same plane, and the first sub color-changing elements 22 are all the electrochromic film structure, so that the change of the background colors of different regions can be realized. More specifically, the number of the first sub color-changing elements 22 is 4, and 4 first sub color-changing elements 22 are arranged in a matrix form.
As another alternative embodiment, referring to fig. 4, the color-changing element 2' includes a plurality of second sub-color-changing elements 21, and the second sub-color-changing elements 21 are all of the above-mentioned electrochromic film structure. A plurality of second sub-color-changing elements 21 are laminated together, and each second sub-color-changing element 21 is arranged corresponding to one color wavelength. More specifically, the number of the second sub color-changing elements 21 is 3, and 3 layers of the second sub color-changing elements 21 are stacked together and respectively arranged corresponding to red, green and blue, so that the adjustability of the 3-color transmission, the background transmittance and the color of the grating is realized.
As an alternative to the fourth embodiment, several of the above-described optical waveguide structures may be arranged together in a stacked manner, as shown in fig. 5.
For cost savings, the coupling-in elements of the optical waveguide structure other than the side close to the human eye can be removed, as will be described in more detail below with reference to fig. 6.
Referring to fig. 6, as an alternative fifth embodiment, the present invention provides an optical waveguide structure including a first optical waveguide structure 81 and a plurality of second optical waveguide structures 82, where the first optical waveguide structure 81 and the plurality of second optical waveguide structures 82 are stacked and the first optical waveguide structure 81 is close to the human eye 5. The first optical waveguide structure 81 is the optical waveguide structure of the first to third embodiments described above. The second optical waveguide structure 82 includes: the color-changing optical waveguide comprises a waveguide substrate 91, a coupling-out element 92 and a color-changing element 93, wherein the coupling-out element 92 and the color-changing element 93 are arranged at one end of the waveguide substrate 91, the color-changing element 93 is arranged on the surface of the waveguide substrate 91 at the side far away from the human eye 5, and light from an image source 3 is coupled into a waveguide substrate 8 of the first optical waveguide structure 81 through a coupling-in element 4 of the first optical waveguide structure 81 and is coupled out to the human eye 5 through a coupling-out element 6 of the first optical waveguide structure 81. Ambient light enters the waveguide substrate 8 of the first optical waveguide structure 81 through the plurality of second optical waveguide structures 82, and is coupled out to the human eye 5 through the coupling-out element 6 of the first optical waveguide structure 81 after being superposed with light of the image source 3. Each of the second optical waveguide structures 82 preferably corresponds to a color setting. More specifically, the number of the second optical waveguide structures 82 is 3, and the second optical waveguide structures are respectively arranged corresponding to red, green and blue, so that the adjustability of 3-color transmission, background transmittance and color of the grating is realized.
The utility model also provides an augmented reality equipment, it includes foretell optical waveguide structure.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An optical waveguide structure, comprising: the color-changing device comprises a waveguide substrate, an incoupling element, an outcoupling element and a color-changing element, wherein the incoupling element is arranged at one end of the waveguide substrate, the outcoupling element is arranged at the other end of the waveguide substrate, the color-changing element is arranged on the waveguide substrate, is positioned at the same end of the waveguide substrate as the outcoupling element and is attached to the surface of the waveguide substrate at the side far away from human eyes, and the color-changing element is a color-changing element with adjustable color or/and transmittance.
2. The optical waveguide structure of claim 1, wherein the color changing element is fully attached to the waveguide substrate by using a low refractive index optical glue or an isolation film; alternatively, the first and second electrodes may be,
the color-changing element is attached to the waveguide substrate in a non-full-attaching mode, the color-changing element is attached to the waveguide substrate through an adhesive tape, and an air gap exists between an adhesive tape area arranged on the color-changing element and the waveguide substrate.
3. The optical waveguide structure of claim 2 further comprising a protective substrate overlying the waveguide substrate and the color shifting element, the protective substrate being a glass substrate.
4. The optical waveguide structure of claim 2, wherein when the color changing element is attached to the waveguide substrate in a non-full attachment manner, attachment glue layers are further attached to two end portions of the color changing element, and the attachment glue layers connect the end portions of the color changing element with the waveguide substrate.
5. Optical waveguide structure according to any of claims 1-4, characterized in that the area of the colour shifting element is equal to or smaller than the area of the waveguide substrate surface.
6. The optical waveguide structure of claim 1, wherein the color shifting elements comprise a plurality of first sub color shifting elements, the plurality of first sub color shifting elements are disposed on the waveguide substrate, and the plurality of first sub color shifting elements are in the same plane.
7. The optical waveguide structure of claim 1, wherein the color shifting element comprises a plurality of second sub color shifting elements, the plurality of second sub color shifting elements are laminated together, and each of the second sub color shifting elements is arranged corresponding to one color wavelength.
8. An optical waveguide structure comprising a plurality of optical waveguide structures arranged in a stack, the optical waveguide structure according to any one of claims 1 to 6.
9. An optical waveguide structure is characterized by comprising a first optical waveguide structure and a plurality of second optical waveguide structures, wherein the first optical waveguide structure and the plurality of second optical waveguide structures are arranged in a laminated mode, and the first optical waveguide structure is close to one side of a human eye; the first optical waveguide structure is the optical waveguide structure of any one of claims 1-6; the second optical waveguide structure includes: the color-changing element is arranged on the surface of one side of the waveguide substrate far away from human eyes, and light rays from an image source are coupled into the waveguide substrate of the first optical waveguide structure through the coupling-in element of the first optical waveguide structure and are coupled out to human eyes through the coupling-out element of the first optical waveguide structure.
10. An augmented reality device comprising the optical waveguide structure of any one of claims 1 to 9.
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| CN201922234192.3U CN210776045U (en) | 2019-12-12 | 2019-12-12 | Optical waveguide structure and augmented reality equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112925117A (en) * | 2021-01-28 | 2021-06-08 | 艾普偏光科技(厦门)有限公司 | Glasses lens with RGB three-color guide film visible light color changing and preparation method |
| CN113126300A (en) * | 2021-04-13 | 2021-07-16 | 维沃移动通信有限公司 | Augmented reality glasses and adjusting method of display picture thereof |
| CN114252996A (en) * | 2020-09-25 | 2022-03-29 | 宏达国际电子股份有限公司 | Near-to-eye display device and method for enhancing color identification thereof |
| CN114384698A (en) * | 2020-10-19 | 2022-04-22 | 宏碁股份有限公司 | Extend intelligent glasses of eye box |
| WO2024033968A1 (en) * | 2022-08-08 | 2024-02-15 | Ｃｅｌｌｉｄ株式会社 | Projection optical system and spectacle-type terminal |
| WO2024033969A1 (en) * | 2022-08-08 | 2024-02-15 | Ｃｅｌｌｉｄ株式会社 | Projection optical system and glasses-type terminal |
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2019
- 2019-12-12 CN CN201922234192.3U patent/CN210776045U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114252996A (en) * | 2020-09-25 | 2022-03-29 | 宏达国际电子股份有限公司 | Near-to-eye display device and method for enhancing color identification thereof |
| CN114384698A (en) * | 2020-10-19 | 2022-04-22 | 宏碁股份有限公司 | Extend intelligent glasses of eye box |
| CN112925117A (en) * | 2021-01-28 | 2021-06-08 | 艾普偏光科技(厦门)有限公司 | Glasses lens with RGB three-color guide film visible light color changing and preparation method |
| CN113126300A (en) * | 2021-04-13 | 2021-07-16 | 维沃移动通信有限公司 | Augmented reality glasses and adjusting method of display picture thereof |
| WO2024033968A1 (en) * | 2022-08-08 | 2024-02-15 | Ｃｅｌｌｉｄ株式会社 | Projection optical system and spectacle-type terminal |
| WO2024033969A1 (en) * | 2022-08-08 | 2024-02-15 | Ｃｅｌｌｉｄ株式会社 | Projection optical system and glasses-type terminal |
| WO2024034150A1 (en) * | 2022-08-08 | 2024-02-15 | Ｃｅｌｌｉｄ株式会社 | Projection optical system and glasses-type terminal |
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