CN108717235A - A kind of nearly eye of adjustable diopter waveguide shows Optical devices - Google Patents
A kind of nearly eye of adjustable diopter waveguide shows Optical devices Download PDFInfo
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- CN108717235A CN108717235A CN201810994236.XA CN201810994236A CN108717235A CN 108717235 A CN108717235 A CN 108717235A CN 201810994236 A CN201810994236 A CN 201810994236A CN 108717235 A CN108717235 A CN 108717235A
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- 239000000758 substrate Substances 0.000 claims abstract description 29
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Classifications
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133345—Insulating layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of nearly eyes of adjustable diopter waveguide to show Optical devices.The device includes：Micro display screen, eyepiece group, vertical extension waveguide assembly and horizontal extension waveguide assembly；Micro display screen is set on the focal plane of eyepiece group, and eyepiece group, which is used for, to be collimated light beam by the beam collimation that micro display screen is sent out and be emitted；Zoom liquid crystal lens are set on the emitting light path of waveguide group；Waveguide group includes two and more than two pellicle inclined-planes, and the collimated light beam for eyepiece group to be emitted carries out equivalent dimension increase；Zoom liquid crystal lens include single-layer or multi-layer liquid crystal lens unit, and every layer of liquid crystal lens unit is set gradually and constituted by the first glass substrate, the first metal driving electrode, the first insulating layer, liquid crystal layer, second insulating layer, the second metal driving electrode and the second glass substrate；Zoom liquid crystal lens are for being adjusted the focal power of extension light beam.The invention can realize that the nearly eye of waveguide shows that the diopter of Optical devices is adjustable.
Description
Technical field
The present invention relates to optics display technology field, the nearly eye of especially a kind of adjustable diopter waveguide shows Optical devices.
Background technology
In the information diversification epoch, it is various need to image informations to be shown it is increasing, nearly optics of the eye display system due to
Can include easily intensively being concerned in a secondary virtual image by various information.It is existing in order to embody enhancing
Real and liberation both hands theories, wearable display optical system using optical element by image information it is virtual include before human eye
At a certain distance from side, facilitate wearer that can observe the variation of surrounding scenes while browsing information, thus will not be to wearing
Wearer's normally performed activity mode impacts.
Head-mounted display (Head-mounted displays, abbreviation HMD) refers to by various optical displays to eye
Eyeball sends optical signalling, and virtual reality (Virtual Reality, VR), augmented reality (Augmented may be implemented
Reality, AR), the different-effects such as mixed reality (Mixreality, MR), be widely used in virtual reality system, to
Enhance the visual immersion of user.In optical display, the head-mounted display for augmented reality can allow people to check
While ambient enviroment, virtual image is projected into human eye, the virtual image of projection can be superimposed upon the true of user's perception
In the world, in military affairs, industry, amusement, medical treatment, the fields such as communications and transportation have great significance.
In the prior art, it in order to meet visual demand and the viewing diopter requirement of different wearers, is wearing
It wears in head-mounted display experience of the process, corresponding nearly (remote) visor piece, shadow is usually needed to frequently replace when different user is experienced
User experience is rung.
Invention content
The object of the present invention is to provide a kind of nearly eyes of adjustable diopter waveguide to show Optical devices, solves in the prior art
Because of the different eyesight number of degrees when different user is experienced, the defect of corresponding power lens is needed to frequently replace, the nearly eye of waveguide is realized
Show that the diopter of Optical devices is adjustable.
To achieve the above object, the present invention provides following schemes：
A kind of nearly eye of adjustable diopter waveguide shows Optical devices, including：Micro display screen, eyepiece group, waveguide group and zoom
Liquid crystal lens；
The micro display screen is set on the focal plane of the eyepiece group, and the waveguide group is set to going out for the eyepiece group
It penetrates in light path, the eyepiece group, which is used for, to be collimated light beam by the beam collimation that the micro display screen is sent out and be emitted；The zoom
Liquid crystal lens are set on the emitting light path of the waveguide group；
The waveguide group be it is glued successively in order by least two parallel tetragonal prisms and at least one Dove prism and
At Dove prism, the waveguide group includes two and more than two pellicle inclined-planes, and the waveguide group will be for will be described
The collimated light beam of eyepiece group outgoing carries out equivalent dimension increase, and exports extension light beam from the pellicle slant reflection；
The Zoom liquid crystal lens include single-layer or multi-layer liquid crystal lens unit, and every layer of liquid crystal lens unit includes liquid
Crystal layer, the first insulating layer, second insulating layer, the first metal driving electrode, the second metal driving electrode, the first glass substrate and
Two glass substrates；First glass substrate, the first metal driving electrode, first insulating layer, the liquid crystal layer, institute
Second insulating layer, the second metal driving electrode and second glass substrate is stated to set gradually；The glass substrate is flat
Row equidistant arrangement；The Zoom liquid crystal lens are for being adjusted the focal power of the extension light beam.
Optionally, the micro display screen is Organic Light Emitting Diode, silicon based liquid crystal screen or the micro display with lighting function
Chip.
Optionally, the eyepiece group is made of monolithic or multi-disc lens, and the lens material is that optical glass or optics are moulded
Material, the distortion of full filed range are less than 1%.
Optionally, the coupling plane of incidence of the waveguide group is a surface polishing or relief grating, the surface polishing material
For optical glass or optical plastic.
Optionally, the acute angle of the parallel tetragonal prism of each of described waveguide group is equal, each ladder in the waveguide group
The acute angle of shape prism is equal and the acute angle of the parallel tetragonal prism is equal with the acute angle of the Dove prism.
Optionally, the inclined-plane of the waveguide group is the inclined-plane of parallel tetragonal prism, is coated with the media coating of different reflectivity
Wire grating, the slant reflection rate are 1%-50%, and the inclined-plane spacing between the adjacent bevel surfaces on multiple inclined-planes is 1-
8mm, the inclined-plane of the waveguide group are used to the light received being split into two light, and one anti-to be carried out according to reflection law
The parallel rays of propagation is penetrated, one is the parallel rays for carrying energy increase and decrease.
Optionally, the thickness of first glass substrate and the second glass substrate is 0.5mm, and the liquid crystal layer is original
The photoelectric material of optical axis, thickness are 100 μm.
Optionally, the thickness of the first metal driving electrode and the second metal driving electrode is 200nm.
According to specific embodiment provided by the invention, the invention discloses following technique effects：
The present invention provides a kind of nearly eyes of adjustable diopter waveguide to show Optical devices, outside waveguide group exit pupil position plus adjustable
The Zoom liquid crystal lens of diopter make it through voltage modulated Zoom liquid crystal lens surface curvature, generate and do not have to focal power, realize wave
It leads nearly eye and shows that the diopter of optical device is adjustable；Metal driving electrode is used in Zoom liquid crystal lens, is independently regulated and controled with voltage
In each liquid crystal lens unit the row of liquid crystal molecule to and the optical properties such as refractive index, image quality can be promoted, improve zoom switching
Speed.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram that the nearly eye of one adjustable diopter waveguide of the embodiment of the present invention shows Optical devices；
Fig. 2 is the vertical view that the nearly eye of one adjustable diopter waveguide of the embodiment of the present invention shows Optical devices；
Fig. 3 is that the nearly eye of one adjustable diopter waveguide of the embodiment of the present invention shows that the liquid crystal of Zoom liquid crystal lens in Optical devices is saturating
Mirror unit structural schematic diagram；
Fig. 4 is that the nearly eye of three adjustable diopter waveguide of the embodiment of the present invention shows that the liquid crystal of Zoom liquid crystal lens in Optical devices is saturating
Mirror unit structural schematic diagram.
Wherein, figure label is：Micro display screen 1, eyepiece group 2, waveguide group 3, Zoom liquid crystal lens 4, human eye eye pupil 5, wave
Lead group the coupling plane of incidence 301, waveguide group inclined-plane 302, incident ray 6, parallel rays 601, the first glass substrate 401, first gold medal
Belong to driving electrodes 402, the first insulating layer 403, liquid crystal layer 404, second insulating layer 405, the second metal driving electrode 406, second
Glass substrate 407, parallel glass 408, convex lens 409, concavees lens 410.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of nearly eyes of adjustable diopter waveguide to show Optical devices, solves in the prior art
Because of the different eyesight number of degrees when different user is experienced, the defect of corresponding power lens is needed to frequently replace, the nearly eye of waveguide is realized
Show that the diopter of Optical devices is adjustable.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Embodiment one
Fig. 1 is the structural schematic diagram that the nearly eye of the adjustable diopter waveguide of the present invention shows Optical devices；Fig. 2 is that the present invention can accommodation
Spend the vertical view that the nearly eye of waveguide shows Optical devices.
As shown in Figs. 1-2, a kind of nearly eye of adjustable diopter waveguide shows Optical devices, including：Micro display screen 1, eyepiece group 2,
Waveguide group 3 and Zoom liquid crystal lens 4；
The micro display screen 1 is set on the focal plane of the eyepiece group 2, and the waveguide group 3 is set to the eyepiece group 2
Emitting light path on, the eyepiece group 2, which is used for, to be collimated light beam by beam collimation that the micro display screen 1 is sent out and is emitted；Institute
Zoom liquid crystal lens 4 are stated to be set on the emitting light path of the waveguide group 3；
The waveguide group 3 be it is glued successively in order by least two parallel tetragonal prisms and at least one Dove prism and
At Dove prism, the waveguide group 3 includes two and more than two pellicle inclined-planes, and the waveguide group 3 is used for institute
The collimated light beam for stating the outgoing of eyepiece group 2 carries out equivalent dimension increase, and exports extension light beam from the pellicle slant reflection.
Fig. 3 is that the nearly eye of one adjustable diopter waveguide of the embodiment of the present invention shows that the liquid crystal of Zoom liquid crystal lens in Optical devices is saturating
Mirror unit structural schematic diagram.
As shown in figure 3, the Zoom liquid crystal lens 4 include single-layer or multi-layer liquid crystal lens unit, every layer of liquid crystal is saturating
Mirror unit includes liquid crystal layer 404, the first insulating layer 403, second insulating layer 405, the first metal driving electrode 402, the second metal
Driving electrodes 406, the first glass substrate 401 and the second glass substrate 407；First glass substrate 401, first metal
Driving electrodes 402, first insulating layer 403, the liquid crystal layer 404, the second insulating layer 405, second metal drive
Moving electrode 406 and second glass substrate 407 are set gradually；The glass substrate parallel equidistant arrangement；The zoom liquid
Brilliant lens 4 are for being adjusted the focal power of the extension light beam.
It is set to generate the electric field of symmetrical parabolic shape distribution, liquid crystal layer in the liquid crystal layer by the driving electrodes of specific shape
404 under electric field driven, and the molecule steering angle of different places is inconsistent, therefore when light beam is by liquid crystal layer 404, the light path of experience
It is inconsistent, reach focusing or dissipating effect.
The micro display screen 1 is Organic Light Emitting Diode, silicon based liquid crystal screen or the micro display chip with lighting function.
The eyepiece group 2 is made of monolithic or multi-disc lens, and the lens material is optical glass or optical plastic, is regarded entirely
Field range distortion is less than 1%.
301 material of the coupling plane of incidence of the waveguide group 3 is optical glass, optical plastic or relief grating, parallel rays
The coupling plane of incidence 301 for spreading into waveguide group 3 forward, according to the law of refraction
N1*sinI=n2*sin θ, n1 refer to the refractive index of incident medium, and n2 refers to the refractive index of emergent medium, and I is incidence angle,
Refer to the angle of incident light and plane of incidence normal, θ is the angle of emergence, it is indicated that penetrates the angle of light and plane of incidence normal.
When coupling the surface polishing that the plane of incidence 301 is optical glass or optical plastic, light propagation law is according to refraction
Law n1*sinI=n2*sin θ.When it is relief grating to couple the plane of incidence 301, light propagation law is according to grating equation：
D* (n1*sinI+n2*sin θ)=m* λ, n1 refers to the refractive index of incident medium, and n2 refers to the refractive index of emergent medium, I
It is incidence angle, refers to the angle of incident light and plane of incidence normal, θ is the angle of emergence, it is indicated that penetrates the angle of light and plane of incidence normal, d is
Refer to corresponding grating constant, m refers to diffraction time, and λ refers to corresponding wavelength of light.
The coupling plane of incidence of the waveguide group 3 is a surface polishing or relief grating, and the surface polishing material is optics
Glass or optical plastic.
The acute angle of the parallel tetragonal prism of each of the waveguide group 3 is equal, each Dove prism in the waveguide group
Acute angle is equal and the acute angle of the parallel tetragonal prism is equal with the acute angle of the Dove prism.
The inclined-plane 302 of the waveguide group is the inclined-plane of parallel tetragonal prism, is coated with the media coating metal of different reflectivity
Wiregrating, 302 reflectivity of the inclined-plane are 1%-50%, and the inclined-plane spacing between the adjacent bevel surfaces on multiple inclined-planes is 1-8mm,
The inclined-plane 302 of the waveguide group is used to the light received being split into two light, and one anti-to be carried out according to reflection law
The parallel rays of propagation is penetrated, one is the parallel rays for carrying energy increase and decrease.
The thickness of first glass substrate, 401 and second glass substrate 407 is 0.5mm, and the liquid crystal layer is original
The photoelectric material thickness of optical axis is 100 μm.
Optionally, the thickness of the first metal driving electrode 402 and the second metal driving electrode 406 is 200nm.
The present invention is adjustable, and the nearly eye of diopter waveguide shows that the specific work process of Optical devices is：
Micro display screen emits beam 6, is parallel rays 601 by the collimation of eyepiece group 2；
The parallel rays 601 is irradiated to the inclined-plane 302 of the waveguide group 3, and light defers to catadioptric law, in waveguide-based
It is transmitted inside bottom, light beam equivalent dimension increases；
Light continues to propagate, and is irradiated on the Zoom liquid crystal lens, passes through voltage modulated liquid crystal lens surface curvature, production
Raw different focal powers, hence into human eye eye pupil.
In horizontal extension waveguide assembly 4, the level coupling plane of incidence 401 and 3 substrate of waveguide group big plane included angle (acute angle) a
Between 30~80 °, it is preferable that it is 45 ° that angle a, which is arranged, in we, then 0 field rays (i.e. parallel rays 106) are flat greatly in substrate
The incidence angle in face is 45 °, meets total reflection principle, parallel rays 106 carries out total reflection biography in 4 substrate of horizontal extension waveguide
It broadcasts.
The first metal driving electrode and the second metal driving electrode be metal electrode film (such as：IndiumTin
Oxide, ITO, tin-doped indium oxide film), the insulating layer is polyimides.
The liquid crystal layer is just optically uniaxial photoelectric material, and the potential energy with molecule changes to minimum state and outer power-up
Field strength compels the characteristic of orientations.Liquid crystal molecule potential energy is the direction and extra electric field field strength side when liquid crystal molecule when minimum
To it is consistent when.The case where being not powered on, due to carrying out horizontal friction to polyimides in liquid crystalline sample so that sample
Middle liquid crystal molecule is arranged for 2.3 ° all along x-axis with angle, at this time referred to as Homogeneous (homogeneous) state, in liquid crystalline sample
Heart circular hole region, electric field is sparse compared with the distribution of weak electric field field wire in circular hole region, and liquid crystal molecule at this time still maintains originally
Homogeneous states, show refractive index be ne (incident light along Z axis incidence, index ellipsoid long axis refractive index).In liquid
The field distribution in brilliant sample bore edges region, this region is non-uniform Distribution, and liquid crystal molecule is between electric field and molecule at this time
It rotates under resilient force, it is neff (θ) (incident light and incident when Z axis angle theta, index ellipsoid to show refractive index
Long axis refractive index).In liquid crystalline sample peripheral region, this region electric field is substantially uniformly distributed, and electric field field wire is distributed comparatively dense,
Liquid crystal molecule is gradually converted to the state of potential energy minimum, until when liquid crystal molecule is perpendicular to glass substrate, potential energy minimum,
It is no to show refractive index (incident light is along Z axis incidence, index ellipsoid short axle refractive index).
Finally, human eye eye pupil 5 can be entered by adjusting the light beam after focal power, at virtual representation.
Embodiment 2
Fig. 4 is that the nearly eye of three adjustable diopter waveguide of the embodiment of the present invention shows that the liquid crystal of Zoom liquid crystal lens in Optical devices is saturating
Mirror unit structural schematic diagram
Embodiment 2 is with embodiment one the difference is that the composition of the liquid crystal lens unit in the Zoom liquid crystal lens
Difference, other all sames.
The difference is that：As shown in figure 4, the liquid crystal lens unit in the Zoom liquid crystal lens includes flat glass
408, convex lens 409 or concavees lens 410, the flat glass 408 are constituted with the convex lens 409 or concavees lens 408 in one
The symmetrical spherical cavity of the heart or convex chamber, the liquid crystal layer 404 are arranged in the cavity or convex chamber, the first metal driving electricity
The top in the convex lens 409 or concavees lens 408 is arranged in pole 402, and the second metal driving electrode 406 setting is described flat
The lower section of row glass 408 from center to edge thickness is gradual change in liquid crystal layer, therefore light beam undergoes light path when passing through liquid crystal layer
It is inconsistent, then it can be focused or dissipate.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of nearly eye of adjustable diopter waveguide shows Optical devices, which is characterized in that including：Micro display screen, eyepiece group, waveguide group
And Zoom liquid crystal lens；
The micro display screen is set on the focal plane of the eyepiece group, and the waveguide group is set to the emergent light of the eyepiece group
On the road, the eyepiece group, which is used for, is collimated light beam by the beam collimation that the micro display screen is sent out and is emitted；The Zoom liquid crystal
Lens are set on the emitting light path of the waveguide group；
The waveguide group be by least two parallel tetragonal prisms and at least one Dove prism it is glued successively in order made of
Dove prism, the waveguide group include two and more than two pellicle inclined-planes, and the waveguide group is used for the eyepiece
The collimated light beam of group outgoing carries out equivalent dimension increase, and exports extension light beam from the pellicle slant reflection；
The Zoom liquid crystal lens include single-layer or multi-layer liquid crystal lens unit, and every layer of liquid crystal lens unit includes liquid crystal
Layer, the first insulating layer, second insulating layer, the first metal driving electrode, the second metal driving electrode, the first glass substrate and second
Glass substrate；It is first glass substrate, the first metal driving electrode, first insulating layer, the liquid crystal layer, described
Second insulating layer, the second metal driving electrode and second glass substrate are set gradually；The glass substrate is parallel
Equidistant arrangement；The Zoom liquid crystal lens are for being adjusted the focal power of the extension light beam.
2. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that described micro- aobvious
Display screen is Organic Light Emitting Diode, silicon based liquid crystal screen or the micro display chip with lighting function.
3. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that the eyepiece
Group is made of monolithic or multi-disc lens, and the lens material is optical glass or optical plastic, and the distortion of full filed range is less than
1%.
4. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that the waveguide
The coupling plane of incidence of group is a surface polishing or relief grating, and the surface polishing material is optical glass or optical plastic.
5. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that the waveguide
The acute angle of the parallel tetragonal prism of each of group is equal, and the acute angle of each Dove prism in the waveguide group is equal and described flat
The acute angle of row tetragonal prism is equal with the acute angle of the Dove prism.
6. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that the waveguide
The inclined-plane of group is the inclined-plane of parallel tetragonal prism, is coated with the media coating wire grating of different reflectivity, the slant reflection rate
For 1%-50%, the inclined-plane spacing between the adjacent bevel surfaces on multiple inclined-planes is 1-8mm, and the inclined-plane of the waveguide group is used for will
The light received is split into two light, and one is the parallel rays for being carried out according to reflection law reflection propagation, and one is to take
Parallel rays with energy increase and decrease.
7. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that described first
The thickness of glass substrate and the second glass substrate is 0.5mm, and the liquid crystal layer is just optically uniaxial photoelectric material, and thickness is
100μm。
8. a kind of nearly eye of adjustable diopter waveguide according to claim 1 shows Optical devices, which is characterized in that described first
The thickness of metal driving electrode and the second metal driving electrode is 200nm.
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| CN111474720A (en) * | 2020-05-05 | 2020-07-31 | 谷东科技有限公司 | Optical waveguide display device and augmented reality display apparatus |
| WO2021109618A1 (en) * | 2019-12-05 | 2021-06-10 | 张炎召 | Near-eye display device |
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