CN105572876A - Slab waveguide augmented reality glasses - Google Patents

Slab waveguide augmented reality glasses Download PDF

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Publication number
CN105572876A
CN105572876A CN201510957859.6A CN201510957859A CN105572876A CN 105572876 A CN105572876 A CN 105572876A CN 201510957859 A CN201510957859 A CN 201510957859A CN 105572876 A CN105572876 A CN 105572876A
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China
Prior art keywords
curved surface
augmented reality
semi
reality glasses
planar waveguide
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Chinese (zh)
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杨军
张婧京
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Shanghai Li Xin Optics Science And Technology Ltd
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Shanghai Li Xin Optics Science And Technology Ltd
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Priority to CN201510957859.6A priority Critical patent/CN105572876A/en
Publication of CN105572876A publication Critical patent/CN105572876A/en
Pending legal-status Critical Current

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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
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • 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
    • G02B2027/0178—Eyeglass type

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention relates to the technical field of augmented reality. Slab waveguide augmented reality glasses include a glasses main body and a micro-image displayer. The glasses main body includes a spectacle frame, lens are installed on the spectacle frame, the lens includes an optical waveguide sheet comprising an optical transmission section and an imaging section, the imaging section comprises three glass layers arranged in parallel from left to right, the edge section of each glass layer is a curved surface having a certain inclination angle, and the edge side surface of the each glass layer is coated with a semi-transmission and semi-reflection membrane. The reflectivity of the semi-transmission and semi-reflection membranes increases in sequence and the transmittance decreases in sequence from inside to outside of the glass main body. A coupling prism is arranged on the right end of the optical waveguide piece, the light entering end of the coupling prism is a transmission surface having a convexity shape relative to the micro-image displayer, and the transmission surface has a function of enlarging the image. The top end surface of the coupling prism is a reflection surface having a concavity shape relative to the micro-image displayer, and a reflection membrane layer is coated on the inner wall of the reflection surface.

Description

A kind of planar waveguide augmented reality glasses
Technical field
The present invention relates to augmented reality field, be specifically related to glasses.
Background technology
Augmented reality is a kind of by the new technology of real world information and virtual world information integerated, can offer convenience in daily life for people.It can realize the visual experience surmounting electronic curtain, the information representing real world is while, virtual information shown, the information of digital world and real world is supplemented and superposition mutually, and the two perfectly combines and is presented in user's eye simultaneously.But now existing augmented reality glasses, when ubiquity uses, the too small user visual field that causes of field angle is not good, and the too thick defect causing entirety to lay particular stress on of eyeglass, thus reduces satisfaction of users.
Summary of the invention
This uses novel object to be, provide a kind of planar waveguide augmented reality glasses, exit pupil diameter is large.
Technical matters solved by the invention can realize by the following technical solutions:
A kind of planar waveguide augmented reality glasses, comprise a lens body and miniature image display, described lens body comprises a mirror holder, described mirror holder is provided with eyeglass, it is characterized in that: described eyeglass comprises a light wave guide card, described light wave guide card is tabular, described light wave guide card comprises optical transport portion and imaging section, described optical transport portion is a transparency glass plate, optical transport portion left end is provided with described imaging section, described imaging section comprises three glassy layers of left and right parallel arrangement successively, the edge tangent plane of described glassy layer is curved surface, there is certain angle of inclination, and the side, edge of every layer of glass scribbles semi-transparent semi-reflecting film, described semi-transparent semi-reflecting film is by the Inside To Outside direction of described lens body, and described semi-transparent semi-reflecting film reflectivity increases progressively successively, and transmitance is successively decreased successively,
The right-hand member of described light wave guide card is provided with a couple prism, and the light inlet end face of described couple prism is one is the transmission curved surface of convex shape relative to described miniature image display, and described transmission curved surface plays enlarged image; The upper surface of couple prism is one is the reflecting curved surface of concave relative to described miniature image display, and described reflecting curved surface madial wall scribbles reflective coating.
The equation of described transmission curved surface, described reflecting curved surface meets one of following three equations:
A () anamorphic aspherical surface, he has the radius-of-curvature of both direction, and can not be identical, and this curved surface is plane symmetry curved surface, and it has two planes of symmetry, respectively about yoz, xoz plane symmetry.
z = C x x 2 + C y y 2 1 + { 1 - ( 1 + K x ) C x 2 x 2 - ( 1 + K y ) C y 2 y 2 } 1 / 2 + Σ i = 1 n A i { ( 1 - P i ) x 2 + ( 1 + P i ) y 2 } i + 1
C xbe curved surface X ?the radius-of-curvature of X-direction in Z plane, C ycurved surface Y ?the radius-of-curvature of Y-direction in Z plane, K xthe whose conic coefficient of curved surface X-direction, K ythe whose conic coefficient of curved surface Y-direction, A t4,6,8 ... 2n rank rotation asymmetry coefficient.
(b) XY polynomial surface,
z ( x , y ) = C ( x 2 + y 2 ) 1 + [ 1 - ( 1 + k ) C 2 ( x 2 + y 2 ) ] 1 / 2 + c 4 y 2 + c 6 x 2 + c 7 y 3 + c 9 yx 2 + c 11 y 4 + c 13 y 2 x 2 + c 15 x 4 + c 16 y 5 + c 18 y 3 x 2 + c 20 yx 4 + c 22 y 6 + c 24 y 4 x 2 + c 26 y 2 x 4 + c 28 x 6 + c 29 y 7 + c 31 y 5 x 2 + c 33 y 3 x 4 + c 35 yx 6 + ...
Wherein C is surface curvature, c jfor multinomial coefficient.
C () toroid is the surface of revolution of a circle or plane curve of order n shape, to be turned round generated by a circle or plane curve of order n around an axle coplanar with this curve.
z = cx 2 1 + [ 1 - ( 1 + k ) c 2 x 2 ] 1 / 2 + A ‾ x 4 + B ‾ x 6 + C ‾ x 8 + D ‾ x 10
Wherein c is radius-of-curvature, and k is quadric surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.
The present invention in use, the light that miniature image display sends enters couple prism via the transmission curved surface transmission of couple prism, then by reflecting curved surface reflect laggard enter optical waveguide sheet, advance in described light wave guide card inner total reflection, there is certain reflection and transmission after being irradiated to the incidence surface of semi-transparent semi-reflecting film in light, finally occurs to enter the pupil of observer bottom the light therethrough glass substrate that reflects successively.
The tangent line of described semi-transparent semi-reflecting film place curved surface and the lower surface of described light wave guide card are an angle, the angle ranging from 20 ~ 30 degree, preferably 24.5 degree.Adopt this angle, the more existing augmented reality glasses of field angle improve a lot, and field angle can reach 36 degree, and visual range is about 18mm.Each described semi-transparent semi-reflecting film is preferably equal with angle formed by described light wave guide card.
Described light wave guide card thickness is 1.8mm ~ 2.2mm, preferred 2mm.Light wave guide card thickness reduces, and reduces the weight of glasses, improves the comfort of user.
Described miniature image display comprises a LCOS projection module, the temple of described mirror holder side is provided with the first cavity, described first cavity is provided with a printing opacity mouth, described printing opacity mouth place is provided with LCOS and projects module, and described LCOS projects the projection mouth of module towards the transmission curved surface of described couple prism.Can aesthetic appeal in cavity LCOS module being installed on temple, simultaneously convenient fixing with install.
The temple of described mirror holder opposite side is provided with the second cavity, described second cavity is provided with an opening, described opening is towards eyeglass front, a distance measuring equipment is provided with in described second cavity, described distance measuring equipment is connected to a microprocessor system, and described microprocessor system also connects described miniature image display.Adjust the size with the picture of object matches by the distance measuring object in real world, make both equidimension combine, and then the combination of thought actual object and dummy object.
Described distance measuring equipment can be laser range finder, can also be range radar.
Described mirror holder is also provided with an image acquisition device, described image acquisition device is provided with at least one camera, described camera connects described microprocessor system, described microprocessor system connects a touch-screen system, described touch-screen system is provided with one for the touch sensible film of touch sensitive action, and described touch sensible film is attached to described eyeglass front.Be provided with image collection function, touch sensing function, the information obtaining real world for miniature disposal system provides the foundation, the information interaction of user's combined type, improves satisfaction of users
Described mirror holder is also provided with a voice acquisition device, and described voice acquisition device is provided with at least one microphone, and described microphone connects described microprocessor system, and described microphone is fixed in the middle part of temple, and described microphone induction direction vertically downward.Make to install more compactly fixing, as far as possible near the oral area of user, reach the effect gathering ambient sound preferably, on the other hand, convenient fixing while, stressed to described mirror holder equilibrium.
Described touch sensible film pastes and adopts piezoelectric type touch technology, and described piezoelectric type touch technology is between resistance-type and capacitive touch control techniques.The Touch Screen of piezoelectric transducer equally supports multi-point touch with capacitance type touch control screen, and supports any object touch-control, only supports the material touch-control of class skin unlike capacitance plate.Like this, piezoelectric type Touch Screen can have the multi-point touch sense of touch of capacitive screens simultaneously, has again the accurate of touch screens.
Described touch sensible film pastes by pressing formula fixed form.Described fixed form pastes all flanges along around a circle foam at described touch sensible film, can not only accomplish effectively to prevent dirt waterproof, and also not damage the described touch sensible film body that loses money in a business.
Accompanying drawing explanation
Fig. 1 is the light path schematic diagram of the eyeglass being positioned at right side of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further below in conjunction with concrete diagram.
With reference to Fig. 1, a kind of planar waveguide augmented reality glasses, comprise a lens body and miniature image display, lens body comprises a mirror holder, mirror holder is provided with eyeglass, eyeglass comprises a light wave guide card, light wave guide card is tabular, light wave guide card comprises optical transport portion 1 and imaging section 2, optical transport portion 1 is a transparency glass plate, optical transport portion 1 left end is provided with imaging section 2, described imaging section comprises three glassy layers of left and right parallel arrangement successively, the edge tangent plane of described glassy layer is curved surface, there is certain angle of inclination, and the side, edge of every layer of glass scribbles semi-transparent semi-reflecting film, semi-transparent semi-reflecting film is by the Inside To Outside direction of lens body, and semi-transparent semi-reflecting film reflectivity increases progressively successively, and transmitance is successively decreased successively, the right-hand member of light wave guide card is provided with a couple prism, and the light inlet end face of couple prism is one is the transmission curved surface 4 of convex shape relative to miniature image display, and transmission curved surface 4 plays enlarged image, the upper surface of couple prism is one is the reflecting curved surface 3 of concave relative to miniature image display, and reflecting curved surface 3 madial wall scribbles reflective coating.
The equation of transmission curved surface 4, reflecting curved surface 3 meets one of following three equations:
A () anamorphic aspherical surface, he has the radius-of-curvature of both direction, and can not be identical, and this curved surface is plane symmetry curved surface, and it has two planes of symmetry, respectively about yoz, xoz plane symmetry.
z = C x x 2 + C y y 2 1 + { 1 - ( 1 + K x ) C x 2 x 2 - ( 1 + K y ) C y 2 y 2 } 1 / 2 + Σ i = 1 n A i { ( 1 - P i ) x 2 + ( 1 + P i ) y 2 } i + 1
C xbe curved surface X ?the radius-of-curvature of X-direction in Z plane, C ycurved surface Y ?the radius-of-curvature of Y-direction in Z plane, K xthe whose conic coefficient of curved surface X-direction, K ythe whose conic coefficient of curved surface Y-direction, A i4,6,8 ... 2n rank rotation asymmetry coefficient.
(b) XY polynomial surface,
z ( x , y ) = C ( x 2 + y 2 ) 1 + [ 1 - ( 1 + k ) C 2 ( x 2 + y 2 ) ] 1 / 2 + c 4 y 2 + c 6 x 2 + c 7 y 3 + c 9 yx 2 + c 11 y 4 + c 13 y 2 x 2 + c 15 x 4 + c 16 y 5 + c 18 y 3 x 2 + c 20 yx 4 + c 22 y 6 + c 24 y 4 x 2 + c 26 y 2 x 4 + c 28 x 6 + c 29 y 7 + c 31 y 5 x 2 + c 33 y 3 x 4 + c 35 yx 6 + ...
Wherein C is surface curvature, c jfor multinomial coefficient.
C () toroid is the surface of revolution of a circle or plane curve of order n shape, to be turned round generated by a circle or plane curve of order n around an axle coplanar with this curve.
z = cx 2 1 + [ 1 - ( 1 + k ) c 2 x 2 ] 1 / 2 + A ‾ x 4 + B ‾ x 6 + C ‾ x 8 + D ‾ x 10
Wherein c is radius-of-curvature, and k is quadric surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.
The present invention in use, the light that miniature image display sends enters couple prism via transmission curved surface 4 transmission of couple prism, then by reflecting curved surface 3 reflect laggard enter optical waveguide sheet, advance in the inner total reflection of light wave guide card, there is certain reflection and transmission after being irradiated to the incidence surface of semi-transparent semi-reflecting film in light, finally occurs to enter the pupil of observer bottom the light therethrough glass substrate that reflects successively.Semi-transparent semi-reflecting film also preferably meets at least one in above-mentioned equation.
The tangent line of semi-transparent semi-reflecting film place curved surface and the lower surface of light wave guide card are an angle, and angle is 20 ~ 30 degree, preferably 24.5 degree.Adopt this angle, the more existing augmented reality glasses of field angle improve a lot, and field angle can reach 36 degree, and visual range is about 18mm.Each semi-transparent semi-reflecting film is preferably equal with angle formed by light wave guide card.
Light wave guide card thickness is 1.8mm ~ 2.2mm, preferred 2mm.Light wave guide card thickness reduces, and reduces the weight of glasses, improves the comfort of user.
Specific embodiment 1, miniature image display comprises a LCOS projection module 5, and the temple of mirror holder side is provided with the first cavity, and the first cavity is provided with a printing opacity mouth, printing opacity mouth place is provided with the transmission curved surface 4 of projection mouth towards couple prism of LCOS projection module 5, LCOS projection module 5.Can aesthetic appeal in cavity LCOS module being installed on temple, simultaneously convenient fixing with install.The temple of mirror holder opposite side is provided with the second cavity, second cavity is provided with an opening, and opening, towards eyeglass front, is provided with a distance measuring equipment in the second cavity, distance measuring equipment is connected to a microprocessor system, and microprocessor system also connects miniature image display.Adjust the size with the picture of object matches by the distance measuring object in real world, make both equidimension combine, and then the combination of thought actual object and dummy object.
Specific embodiment 2, miniature image display is fixed on mirror holder, and the picture of miniature image display launches mouth towards transmission curved surface.Preferably, mirror holder comprises two temples, cavity is equipped with in two temples, be positioned at the right-hand member of couple prism at light wave guide card of the optical waveguide eyeglass on right side, the couple prism being positioned at the optical waveguide eyeglass on right side is deeply positioned at the cavity of the temple on right side, be positioned at the left end of couple prism at light wave guide card of the optical waveguide eyeglass in left side, the couple prism being positioned at the optical waveguide eyeglass in left side is deeply positioned at the cavity of the temple in left side; Miniature image display is provided with one or two LCOS projection module, and two LCOS projective module groups lay respectively in two cavities, and respectively just to two couple prisms.Lens body is also fixed with a distance measuring equipment, and distance measuring equipment is towards the front of glasses, and distance measuring equipment connects a microprocessor system, and microprocessor system connects miniature image display.Preferably, distance measuring equipment is between two optical waveguide eyeglasses.
In above-mentioned two embodiments, distance measuring equipment can be laser range finder, can also be range radar.
Mirror holder is also provided with an image acquisition device, image acquisition device is provided with at least one camera, camera connects microprocessor system, microprocessor system connects a touch-screen system, touch-screen system is provided with one for the touch sensible film of touch sensitive action, and touch sensible film is attached to eyeglass front.Be provided with image collection function, touch sensing function, the information obtaining real world for miniature disposal system provides the foundation, the information interaction of user's combined type, improves satisfaction of users
Mirror holder is also provided with a voice acquisition device, and voice acquisition device is provided with at least one microphone, and microphone connects microprocessor system, and microphone is fixed in the middle part of temple, and microphone induction direction vertically downward.Make to install more compactly fixing, as far as possible near the oral area of user, reach the effect gathering ambient sound preferably, on the other hand, convenient fixing while, stressed to mirror holder equilibrium.
Touch sensible film pastes and adopts piezoelectric type touch technology, and piezoelectric type touch technology is between resistance-type and capacitive touch control techniques.The Touch Screen of piezoelectric transducer equally supports multi-point touch with capacitance type touch control screen, and supports any object touch-control, only supports the material touch-control of class skin unlike capacitance plate.Like this, piezoelectric type Touch Screen can have the multi-point touch sense of touch of capacitive screens simultaneously, has again the accurate of touch screens.
Touch sensible film pastes by pressing formula fixed form.Fixed form pastes all flanges along around a circle foam at touch sensible film, can not only accomplish effectively to prevent dirt waterproof, and also not damage the touch sensible film body that loses money in a business.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (9)

1. planar waveguide augmented reality glasses, comprise a lens body and miniature image display, described lens body comprises a mirror holder, described mirror holder is provided with eyeglass, it is characterized in that: described eyeglass comprises a light wave guide card, described light wave guide card is tabular, described light wave guide card comprises optical transport portion and imaging section, described optical transport portion is a transparency glass plate, optical transport portion left end is provided with described imaging section, described imaging section comprises three glassy layers of left and right parallel arrangement successively, the edge tangent plane of described glassy layer is curved surface, there is certain angle of inclination, and the side, edge of every layer of glass scribbles semi-transparent semi-reflecting film, described semi-transparent semi-reflecting film is by the Inside To Outside direction of described lens body, and described semi-transparent semi-reflecting film reflectivity increases progressively successively, and transmitance is successively decreased successively,
The right-hand member of described light wave guide card is provided with a couple prism, and the light inlet end face of described couple prism is one is the transmission curved surface of convex shape relative to described miniature image display, and described transmission curved surface plays enlarged image; The upper surface of couple prism is one is the reflecting curved surface of concave relative to described miniature image display, and described reflecting curved surface madial wall scribbles reflective coating.
2. a kind of planar waveguide augmented reality glasses according to claim 1, is characterized in that, the surface equation of described transmission curved surface, described reflecting curved surface meets one of following three equations:
z = C x x 2 + C y y 2 1 + { 1 - ( 1 + K x ) C x 2 x 2 - ( 1 + K y ) C y 2 y 2 } 1 / 2 + Σ i = 1 n A i { ( 1 - P i ) x 2 + ( 1 + P i ) y 2 } i + 1 - - - ( a )
C xbe curved surface X ?the radius-of-curvature of X-direction in Z plane, C ycurved surface Y ?the radius-of-curvature of Y-direction in Z plane, K xthe whose conic coefficient of curved surface X-direction, K ythe whose conic coefficient of curved surface Y-direction, A i4,6,8 ... 2n rank rotation asymmetry coefficient;
z ( x , y ) = C ( x 2 + y 2 ) 1 + [ 1 - ( 1 + k ) C 2 ( x 2 + y 2 ) ] 1 / 2 + c 4 y 2 + c 6 x 2 + c 7 y 3 + c 9 yx 2 + c 11 y 4 + c 13 y 2 x 2 + c 15 x 4 + c 16 y 5 + c 18 y 3 x 2 + c 20 yx 4 + c 22 y 6 + c 24 y 4 x 2 + c 26 y 2 x 4 + c 28 x 6 + c 29 y 7 + c 31 y 5 x 2 + c 33 y 3 x 4 + c 35 yx 6 + ... - - - ( b )
Wherein C is surface curvature, c jfor multinomial coefficient;
z = cx 2 1 + [ 1 - ( 1 + k ) c 2 x 2 ] 1 / 2 + A ‾ x 4 + B ‾ x 6 + C ‾ x 8 + D ‾ x 10 - - - ( c )
Wherein c is radius-of-curvature, and k is quadric surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.
3. a kind of planar waveguide augmented reality glasses according to claim 1, is characterized in that, the tangent line of described semi-transparent semi-reflecting film place curved surface and the lower surface of described light wave guide card are an angle, the angle ranging from 20 ~ 30 degree.
4. a kind of planar waveguide augmented reality glasses according to claim 1, is characterized in that, described light wave guide card thickness is 1.8mm ~ 2.2mm.
5. a kind of planar waveguide augmented reality glasses according to claim 1, it is characterized in that, described miniature image display comprises a LCOS projection module, the temple of described mirror holder side is provided with the first cavity, described first cavity is provided with a printing opacity mouth, described printing opacity mouth place is provided with LCOS and projects module, and described LCOS projects the projection mouth of module towards the transmission curved surface of described couple prism.
6. a kind of planar waveguide augmented reality glasses according to claim 5, it is characterized in that, the temple of described mirror holder opposite side is provided with the second cavity, described second cavity is provided with an opening, described opening is towards eyeglass front, be provided with a distance measuring equipment in described second cavity, described distance measuring equipment is connected to a microprocessor system, and described microprocessor system also connects described miniature image display.
7. a kind of planar waveguide augmented reality glasses according to claim 6, it is characterized in that, described mirror holder is also provided with an image acquisition device, described image acquisition device is provided with at least one camera, described camera connects described microprocessor system, described microprocessor system connects a touch-screen system, and described touch-screen system is provided with one for the touch sensible film of touch sensitive action, and described touch sensible film is attached to described eyeglass front.
8. a kind of planar waveguide augmented reality glasses according to claim 7, is characterized in that, described touch sensible film pastes by pressing formula fixed form, and described touch sensible film pastes all flanges and encloses foam along around one.
9. a kind of planar waveguide augmented reality glasses according to claim 7, it is characterized in that, described mirror holder is also provided with a voice acquisition device, described voice acquisition device is provided with at least one microphone, described microphone connects described microprocessor system, described microphone is fixed in the middle part of temple, and described microphone induction direction vertically downward.
CN201510957859.6A 2015-12-18 2015-12-18 Slab waveguide augmented reality glasses Pending CN105572876A (en)

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Application publication date: 20160511