CN109656025A - Projecting optical device of the augmented reality in conjunction with glasses - Google Patents
Projecting optical device of the augmented reality in conjunction with glasses Download PDFInfo
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- CN109656025A CN109656025A CN201910075201.0A CN201910075201A CN109656025A CN 109656025 A CN109656025 A CN 109656025A CN 201910075201 A CN201910075201 A CN 201910075201A CN 109656025 A CN109656025 A CN 109656025A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 218
- 239000011521 glass Substances 0.000 title claims abstract description 63
- 230000003190 augmentative effect Effects 0.000 title claims abstract description 62
- 230000004075 alteration Effects 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000002708 enhancing effect Effects 0.000 claims description 5
- 208000001491 myopia Diseases 0.000 abstract description 9
- 230000004379 myopia Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 10
- 238000003199 nucleic acid amplification method Methods 0.000 description 10
- 210000001747 pupil Anatomy 0.000 description 6
- 230000004305 hyperopia Effects 0.000 description 5
- 201000006318 hyperopia Diseases 0.000 description 5
- 241000700608 Sagitta Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
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- 241000452638 Parasaissetia nigra Species 0.000 description 1
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- 210000001525 retina Anatomy 0.000 description 1
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- 238000009738 saturating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- 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
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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- Optics & Photonics (AREA)
Abstract
The present invention provides a kind of projecting optical device of augmented reality in conjunction with glasses, including diopter spectacle lens part and augmented reality opticator.Diopter spectacle lens include two surfaces, and the fixed camber in one of surface and augmented reality optical system share, the curvature-adjustable section on another surface, by adjusting curvature, the myopia and hyperopic lens of available difference degree.Augmented reality opticator includes six spherical surfaces, two aspherical and three free form surface compositions, and first spherical surface therein and spectacle lens first fixed camber face share.By being superimposed for spectacle lens and augmented reality optical system, the function that the function and augmented reality that can be realized simultaneously glasses are shown.
Description
Technical field
The present invention relates to augmented reality fields, and in particular, to a kind of projected light of augmented reality in conjunction with glasses
Learning device more particularly to one kind can allow wear glasses simultaneously and all see reality scene and virtual display scene clearly with the crowd that do not wear glasses
, the optical system that augmented reality is in conjunction with glasses.
Background technique
In recent years, consumer electronics had obtained vigorous growth, after smart phone, virtual reality (virtual
Reality, VR) and augmented reality (augmented reality, AR) be rapidly developed, and many consumers chase phase
Trial of the various concept products closed as experience new technology, the display equipment of head-mounted display (HMD) etc can be realized logical
It crosses simple wearing and obtains augmented reality (AR) experience or virtual reality (VR) experience, in aviation, engineering, science, medical treatment, trip
The fields such as play, video, sport, training and emulation have a wide range of applications.
HMD come in by way of realizing AR experience, the mode of glasses class is because of similar spectacles or farsightedness
Mirror, not only fashion but also light, was widely pursued to receive.For example, the Google Glass that Google releases, Microsoft
The Hololens concept type product of release, the BT-300 that Seiko Epson Corporation releases；For another example patent document CN109116558A is disclosed
A kind of augmented reality glasses.But myopia and farsightedness crowd have to wear corresponding nearsighted eyeglass or hyperopic lens
It can just see extraneous reality scene, thus, for the AR of glasses class display experience, cuts spectacle lens and realize light weight
Change, Energy and comfort is the necessary of popularization and application.
In order to realize the AR displaying scheme of ultra thin optical transmission-type, the design of free curved surface prism element is introduced, is utilized
Catadioptric optical path adds the mode of compensating prism to realize the AR of Light Transmission, but reaches the need of curvature in view of free curved surface prism
It wants, in the case where reaching good visual experience, the thickness of the optical system of this scheme cannot be accomplished very frivolous, limit
Glasses class AR is shown further lightening；And other design then uses planar optical waveguide scheme, using light in plane
Total internal reflection in waveguide component effectively reduces the thickness of optical element, but slab guide element can not provide focal power,
Need to cooperate optical projection system reasonably to visually display that size using could obtain, if matching degree is bad, wearer's emergent pupil
The light distribution of position is easy to appear apparent uneven or even discontinuous, influences user's visual experience.
Therefore it provides a kind of projecting optical device with higher practical valence of novel, augmented reality in conjunction with glasses
Value and meaning.
Summary of the invention
For the defects in the prior art, the projected light the object of the present invention is to provide a kind of augmented reality in conjunction with glasses
Learn device.
A kind of projecting optical device of the augmented reality provided according to the present invention in conjunction with glasses, including display unit, enhancing
Real portion and diopter glasses portion；
The display unit can export the image information of setting；
The image information that the augmented reality portion can export display unit is by optical waveguide and/or freeform optics member
Part is transmitted to observer；
Extraneous scene can be transmitted to observer by diopter glasses portion, and the optical path in diopter glasses portion and enhancing are existing
The optical path of real part is overlapped in whole or in part.
Preferably, the augmented reality portion includes the second optical element；Diopter glasses portion includes the first optical element；
Second optical element is arranged on display unit to the optical path of observer, that is, the image of display unit output is arranged in
In the transmission path of information；
External world's scene successively passes through the first optical element and the second optical element is transmitted to observer.
Preferably, projecting optical device of the augmented reality in conjunction with glasses further includes lens subassembly；
The lens subassembly includes the second lens and the first lens；
Second lens and the first lens are arranged on display unit to the optical path between observer, i.e. the second lens and
One lens are arranged in the transmission path of image information；
Described image information can pass through the second lens and the first lens corrects aberrations；The difference includes the second optics member
The aberration that part and/or the first optical element generate.
Preferably, first lens include rectangle positive lens；Second lens include rectangle negative lens；
First lens include that a spherical surface and one are aspherical；Second lens include that a spherical surface and one are non-
Spherical surface；
Second optical element includes one or more free form surfaces；First optical element includes inclined freedom
Curved surface；One free form surface of the second optical element and the inclination free form surface of the first optical element are connected, and connecting place is arranged
There is part reflective semitransparent film.
Preferably, second optical element includes the arc surface with curvature；First optical element includes focal length
Correction face；Focal length correction face can reflect the light of extraneous scene with the refractive index of setting, and by the extraneous scape after refraction
The light of elephant is exported to observer.
Preferably, second optical element can amplify the image information of display unit output, and by amplified image
Information is exported in parallel to observer.
Preferably, second optical element includes three free form surfaces, and the free form surface includes anamorphic aspherical surface, more
Any one of item formula curved surface, double cubic surface and zernike polynomial curved surface appoint multiple combinations.
Preferably, first optical element and the second optical element are free curved surface prism；Second lens and
First lens are non-spherical lens.
Preferably, the horizontal field of view angle of the observer and vertical field of view tangent of an angle ratio are 16:9 or 4:3.
Preferably, the extraneous scene can be transmitted after focal length correction face amendment with the focal length of setting and/or intensity
To observer.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, projecting optical device of the augmented reality provided by the invention in conjunction with glasses, it is simple and compact for structure, there is volume
Small, light-weight and high quality of optical imaging advantage；
2, projecting optical device of the augmented reality provided by the invention in conjunction with glasses, since lens group lens are few, prism
Thickness is small, has the advantages that processing request is lower, comfortable wearing compared to traditional lensed configuration, especially for myopia,
The user of long sight, the problem of eliminating additional wearing spectacles.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of projecting optical device preference of the augmented reality provided by the invention in conjunction with glasses；
Fig. 2 is that the part optical path of projecting optical device preference of the augmented reality provided by the invention in conjunction with glasses is illustrated
Figure；
Fig. 3 is the curvature of field characteristic curve of projecting optical device preference of the augmented reality provided by the invention in conjunction with glasses
Schematic diagram；
Fig. 4 is the distortion performance curve of projecting optical device preference of the augmented reality provided by the invention in conjunction with glasses
Schematic diagram；
Fig. 5 is the modulation transmitting letter of projecting optical device preference of the augmented reality provided by the invention in conjunction with glasses
Number characteristic curve MTF.
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of projecting optical device of the augmented reality provided according to the present invention in conjunction with glasses, including display unit 5, enhancing
Real portion and diopter glasses portion 120；The display unit 5 can export the image information of setting；The augmented reality portion can
The image information that display unit 5 is exported passes through optical waveguide and/or freeform optics element transmission to observer 140；The view
Extraneous scene 130 can be transmitted to observer 140, and the optical path and augmented reality in diopter glasses portion 120 by degree glasses portion 120
The optical path in portion is overlapped in whole or in part.
Preferably, the augmented reality portion includes the second optical element 2；Diopter glasses portion 120 includes the first optics
Element 1；Second optical element 2 is arranged on display unit 5 to the optical path of observer 140, that is, the output of display unit 5 is arranged in
In the transmission path of image information；External world's scene 130 is successively transmitted by the first optical element 1 and the second optical element 2
To observer 140.Projecting optical device of the augmented reality in conjunction with glasses further includes lens subassembly 110；The lens group
Part 110 includes the second lens 3 and the first lens 4；Second lens 3 and the first lens 4 are arranged at display unit 5 to observer
In optical path between 140, i.e. the second lens 3 and the first lens 4 are arranged in the transmission path of image information；Described image information
Aberration can be corrected by the second lens 3 and the first lens 4；The difference includes the second optical element 2 and/or the first optics member
The aberration that part 1 generates.
Specifically, first lens 4 include rectangle positive lens, and wherein rectangle positive lens is cut by typical round positive lens
Four edges are prescinded to be formed；Second lens 3 include rectangle negative lens, and wherein rectangle negative lens is cut by typical round negative lens
Four edges are prescinded to be formed；First lens 4 include that a spherical surface and one are aspherical；Second lens 3 include a ball
Face and one it is aspherical；Second optical element 2 includes one or more free form surfaces；First optical element 1 includes
Inclined free form surface；One free form surface of the second optical element 2 and the inclination free form surface of the first optical element 1 are connected,
And connecting place is provided with part reflective semitransparent film.Preferably, second optical element 2 includes the arc surface with curvature；Described
One optical element 1 includes that focal length corrects face；Focal length correction face can reflect the light of extraneous scene 140 with the refractive index of setting
Line, and the light of the extraneous scene 140 after refraction is exported to observer 140.Second optical element 2 can amplify display
The image information that portion 5 exports, and amplified image information is exported in parallel to observer 140.Second optical element 2 wraps
Three free form surfaces are included, the free form surface includes anamorphic aspherical surface, polynomial surface, double cubic surface and Ze Nike multinomial
Any one of formula curved surface appoints multiple combinations.First optical element 1 and the second optical element 2 are free form surface rib
Mirror；Second lens 3 and the first lens 4 are non-spherical lens.The horizontal field of view angle of the observer 140 and vertical field of view
Tangent of an angle ratio is 16:9 or 4:3.External world's scene 130, can be with the focal length of setting after focal length correction face amendment
And/or intensity is transmitted to observer 140.
Further, preference of the invention is related to a kind of augmented reality optical system combined with spectacle lens, including
Diopter glasses portion 120 and augmented reality opticator.Diopter glasses portion 120 includes two surfaces, and one of surface is solid
Determine camber and augmented reality optical system to share, the curvature-adjustable section on another surface, by adjusting curvature, it is available not
With the myopia and hyperopic lens of degree.Augmented reality opticator includes six spherical surfaces, two aspherical and three freedom
Curved surface composition, first spherical surface therein are shared with spectacle lens first fixed camber face.Pass through spectacle lens and augmented reality light
The superposition of system, the function that the function and augmented reality that can be realized simultaneously glasses are shown.Preference of the invention is utilizing
On the basis of slab guide element, free form surface joined, and using the scheme combined with concave lens, make AR optical system
Uniting, it is lightening and convenient to have accomplished, solves the problems, such as that current AR glasses need user's wearing spectacles.
A kind of optical system of the augmented reality that preference of the present invention provides in conjunction with glasses, comprising:
Augmented reality portion, the augmented reality portion are used to the image on display element to match by optical waveguide and free form surface
It sets and is transferred on human eye retina；
Diopter glasses portion 120, diopter glasses portion include two surfaces, one of surface and augmented reality portion weight
It closes, another surface is focal length corrective surface, for forming the glasses of different degrees.
Preference of the invention further includes lens subassembly 110, and the augmented reality portion includes the second optical element 2 and first
The light of optical element 1, described image information is guided via the lens subassembly 110, then passes through the amplification of the second optical element 2
It is transmitted with the optical waveguide of the second optical element 2, then by being reflected into the eyes of the observer 140, external world's scene
Second light of 130 the first optical element first surfaces 11 and the second optical element 2 corrected through the first optical element 1 for focal length
Learn the eyes that the 6th surface 26 of element is transmitted into the observer.The lens subassembly 110 includes that the first lens 4 and second are saturating
Mirror 3, the first lens 4 and the second lens 3 are configured to correct the aberration of 2 enlarged drawing of the second optical element generation.First lens 4
For rectangle positive lens, the first face of the first lens 4 be it is aspherical, the second face is spherical surface；Second lens 3 are rectangle negative lens, the
First face of two lens 3 be it is aspherical, the second face is spherical surface；Second optical element 2 includes one or more free form surfaces；First
Optical element 1 includes inclined surface, and the inclined surface is free form surface, and it is anti-that the free form surface of the first optical element 1 is coated with half
Semi-permeable membrane and the synthesis face is formed with one of free form surface gluing in the second optical element 2.The second optics member
The 6th surface 26 of the second optical element of part 2 is the arc surface with curvature；First optical element of first optical element 1
First surface 11 is that focal length corrects face, and by the correction of the first optical element first surface 11, similar various degrees can be generated
Spectacle lens prism.Second optical element 2 is main function amplification prism, and the second optical element 2 generates the display unit 5
Image information amplification is adjusted to the eyes that directional light enters the observer 140.Second optical element 2 includes three freely bent
The face type in face, three free form surfaces of the second optical element 2 is one of the following: anamorphic aspherical surface, polynomial surface, biquadratic are bent
Face or Ze Nike curved surface etc..The 6th surface 26 of second optical element be a fixed curvature arc surface, it is aspherical or
Free form surface, the first optical element first surface 11 are that focal length corrects curved surface and the 6th surface 26 of the second optical element cooperates shape
At the myopia or hyperopic lens of various degrees.Either myopia or farsightedness or normal eyes, can be by this hair
Bright preference sees the virtual image that AR is shown and extraneous visions of reality clearly.Meanwhile preference of the invention can also reduce
Volume mitigates weight, improves the comfort and convenience of wearing.
Described image generating element is Autoluminescence liquid crystal on silicon display element, image planes edge emergent ray and image planes normal
Angle theta range ± 10 °≤θ≤150 °.The 6th surface 26 of the second optical element of second optical element 2 is circular arc
Curvature surface；The circular arc curvature on the 6th surface 26 of the second optical element of second optical element 2 is definite value.First optics
First optical element first surface 11 of element 1 is circular arc curvature face；First optical element first of first optical element 1
The circular arc curvature face on surface 11 is the value of variation, its value is by the degree of glasses and the second optical element of the second optical element 2
What the curvature on the 6th surface 26 determined.
Conventional lenses formula structure is mostly the goggle structure of rotational symmetry, although optical property can be close to diffraction limit and energy
It is enough correcting distorted to a certain extent, but structure is complicated for multiple lens, adjustment and processing accuracy are high, volume weight
Very big, neck fatigue can be caused for a long time by wearing, and myopia and farsightedness crowd also need wearing spectacles.Compared to tradition
Lens type or free form surface/refraction and diffraction hybrid structure, optics of the augmented reality that the application preference provides in conjunction with spectacle lens are thrown
Shadow system imaging quality is high, and structure is simple, small in size, light-weight, comfortable wearing.
The optical projection technology of the application preference can be widely applied to the void such as amusement, analog simulation training, surgical operation
The every field of quasi- reality technology.
Further, as shown in Figures 1 to 5, augmented reality optical system in conjunction with glasses is an image amplification system
It unites, image caused by image-producing elements amplifies by optical system, and an amplification is presented at a certain distance from before human eye
The virtual image is immersed in user completely among virtual situation, can also combine with reality, forms a kind of real field of expansion
Scape, myopia and farsightedness can see virtual image and extraneous scene clearly by secondary optical system simultaneously.
Referring to Figure 1, the augmented reality of preference of the present invention optical system in conjunction with glasses may include display unit 5, thoroughly
Mirror assembly 110, glasses portion 120.Display unit 5 is configured to generate image information, and for example, display unit 5 can be pixel, example
Such as liquid crystal on silicon display element (Lcos).The light of the image information of display unit 5, via lens subassembly 110 and the second optical element 2
Amplification and optical waveguide be transmitted for observer 140 viewing.Lens subassembly 110 may include the first lens 4 and the second lens 3.
Wherein the 4th surface 1a of the first optical element of the first optical element 1 is free form surface, the first optics member of the first optical element 1
Part first surface 11 is that eyeglass lens power corrects curved surface, the remaining surface of the first optical element 1, i.e. the first optical element second surface
12 and first optical element third surface 13 be plane；Three surfaces of the second optical element 2, i.e. the 7th table of the second optical element
Face 2a, the second optical element the 8th surface 2b and the 9th surface 2c of the second optical element are free form surface, the second optics member
The 6th surface 26 of the second optical element of part 2 is with cambered curvature surface, for the first optics member with the first optical element 1
Part first surface 11 cooperatively forms the spectacle lens of various degrees, the remaining surface of the second optical element 2, i.e. the second optical element
One surface 21, the second optical element second surface 22, the second optical element third surface 23, the 4th surface 24 of the second optical element
And the 5th surface 25 of the second optical element is all plane.
Observation unit 140 includes the eyes of user, i.e. human eye or entrance pupil.Indicate the light of image information via lens subassembly 110
Guidance, then by the amplification of the second optical element 2 and the eyes for being reflected into user of the first optical element 1, extraneous scene
First first table of optical element on 130 the 6th surfaces 26 of the second optical element through the second optical element 2 and the first optical element 1
Face 11 is transmitted into the eyes of user after correcting, form clearly image.First lens 4 and the second lens 3 are configured to correct
The aberration that second optical element, 2 enlarged drawing generates.Second optical element 2 is main function amplification prism, the second optical element 2
The image information amplification that pattern-creating element generates is adjusted to the eyes that directional light enters user.Vertical direction maximum field of view top
Incident angular dependence when edge light intersects twice with the surface of the second free form surface should meet following relationship:
Wherein, as shown in Fig. 2, θ1The is issued from described image producing element for vertical direction maximum field of view top edge light
Three, incidence angle when four, five the second 2 edges of optical element of process, θ2For vertical direction maximum field of view top edge light first
Secondary and last time passes through incidence angle when the second optical element 2, the refractive index that n ' is worth for material.
By object side to human eye side, can augmented reality optical system in conjunction with glasses include: Lcos constitute display unit 5, the
One lens 4, the second lens 3, the second optical element 2, the first optical element 1.One face pixel (see Fig. 1) generates image, image
Light successively passes through the aberration correction of the first lens and the second lens, then freely bent by the amplification of the second optical element and second
The entrance pupil the being reflected into i.e. human eye in face, optical system light path figure are as shown in Figure 2.
The free form surface being connected with the second optical element 2, i.e. the 4th surface 1a of the first optical element are extraneous scene and void
Quasi- image synthesizes face, this face is coated with part reflective semitransparent film, enters human eye by this face after extraneous scene 130 and virtual image synthesis.
The face type of first optical element 1 and the second optical element 2 can be one of following three kinds of face types: anamorphic aspherical surface, multiple song
Face XY polynomial surface and double cubic surface.
A, anamorphic aspherical surface
The anamorphic aspherical surface meets following first equation:
Wherein, CxIt is the radius of curvature of curved surface X-direction in X-Z plane；CyIt is the curvature of curved surface Y-direction in Y-Z plane
Radius, KxIt is the whose conic coefficient of curved surface X-direction, KyIt is the whose conic coefficient of curved surface Y-direction, AiThe 2n that is 4,6,8,10 ...
Rank asphericity coefficient, about Z axis rotational symmetry；PiThe 2n rank non-rotational symmetry coefficient that is 4,6,8,10 ....X, y respectively represents X
Coordinate value on axis, Y direction；The direction of Y-axis and Z axis indicates that X-axis, Y-axis and Z axis meet right-handed scale (R.H.scale) as shown in Figure 2
System；Parameter is in real number range.
B, double-curved surface XY polynomial surface
The double-curved surface XY polynomial surface (AXYP) meets following second equation:
Wherein, cx、cyIt is vertex curvature radius of the curved surface in meridian direction, sagitta of arc direction, k respectivelyx, kyIt is meridian respectively
The quadratic surface coefficient in direction, sagitta of arc direction, C(m, n)It is multinomial xmynCoefficient, p be polynomial highest power exponent.x,y
Respectively represent X-axis, the coordinate value in Y direction；The direction of Y-axis and Z axis indicates that as shown in Figure 2, X-axis, Y-axis and Z axis meet
Right-handed coordinate system；Each parameter is in real number range.
Also, meridian direction, sagitta of arc direction are defined as follows:
The plane that the chief ray and optical system main shaft of extra-axial object point are constituted, the referred to as meridian plane of optical system imaging,
It is meridian direction along the direction of meridian plane；The face vertical with meridian plane is sagittal surface, is sagitta of arc direction along the direction of sagittal surface.
C, double cubic surface
It is double cubic surface in X and the independent secondary aspherical of Y-direction.
The double cubic surface meets following third equation:
Wherein,
Wherein, the first parameter RxFor the curved surface radius value in the X-axis direction of setting, work as RxWhen=0, curved surface is in X-direction
On radius value it is infinitely great；Second parameter kxFor quadratic surface coefficient；Third parameter RyFor setting curved surface in the Y-axis direction
Radius value works as RyWhen=0, the radius value of curved surface in the Y-axis direction is infinitely great；4th parameter kyFor quadratic surface coefficient；
Second lens 3 and the first lens 4 are non-spherical lens, and aspherical face type equation is following third party
Journey:
Wherein, c is radius of curvature, and r is the aperture on lens at different location, and k is quadratic surface coefficient.Other parameters:
First parameter alpha1, the second parameter alpha2, third parameter alpha3, the 4th parameter alpha4, the 5th parameter alpha5, the 6th parameter alpha6, the 7th parameter alpha7,
Eight parameter alphas8.Each parameter is real number range.
Second optical element 2 and the first optical element 1 are glued, and cemented surface is the first free form surface of the second optical element
2c is coated with part reflective semitransparent film on the free form surface 1a of the first optical element.It is aobvious that display unit can be Autoluminescence liquid crystal on silicon
Show element.As shown in Figure 1, image planes output angle θ is the angle of image planes edge emergent ray and image planes normal, the range of θ is at ± 10 °
≤θ≤150°.For example, image planes output angle θ can be ± 5 ° or ± 10 °.Visual field is small when θ takes ± 5 °, the illuminance of acquisition
It is high；Visual field is big when θ takes ± 10 °, and the illuminance of acquisition is slightly lower.The horizontal field of view angle of the eyes of user is the range of ω at ± 10 °
≤ ω≤± 60 °, for example, ω (see Fig. 1) can take ± 7.5 °.The range of the vertical field of view angle h of the eyes of user ±
6 °≤ω≤± 40 °, for example, h (vertical direction of ω) can take ± 6 °.Horizontal field of view angle and vertical field of view tangent of an angle
Ratio is 16:9.The range of the entrance pupil η (see Fig. 1) of the eyes of user can be in 3mm≤η≤8mm, for example, and entrance pupil η can be with
For 5mm.The distance on human eye entrance pupil to the first optical element third surface 13 of the first optical element 1 is to exist into interpupillary distance l range
15mm≤l≤20mm, for example, entering interpupillary distance l is 20mm.The thickness of second optical element 2, i.e. the 5th table of the second optical element
The horizontal distance on the 6th surface 26 of the 25 to the second optical element of face is 5mm.The pixel of Lcos can be 1280 × 720, effective ruler
Very little can be 0.294 inch.The radius of curvature R on the 6th surface 26 of the second optical element of the second optical element 2cFor certain value,
Range is in 10mm≤Rc≤ 100mm, for example, radius of curvature RcFor 20mm.The first optical element of first optical element 1
The radius of curvature R on one surface 11dIt is the 6th surface 26 of the second optical element of the degree and the second optical element 2 according to spectacle lens
Radius of curvature value RcIt calculates, calculation is as follows: according to the degree φ of spectacle lens, calculating the focal length f of spectacle lens,
The unit of f is m (rice), and calculation formula is as follows:
Then according to focal length of lens calculation formula:
Calculate RdValue, the radius of curvature R of the first optical element first surface 11 of as the first optical element 1d's
Value.Wherein n ' is the refractive index of the second optical element, and d is first the 11 to the second optical element of optical element first surface the 6th
The distance on surface 26, unit mm.The angle of first 1 two on-right angles of optical element is 30 ° and 150 ° (that is, the first optics is first
The angle of the 4th surface 1a of part and the first optical element first surface 11 is 30 °, the first optical element the 4th surface 1a and first
The angle on optical element third surface 13 is 150 °).The 4th surface 24 of the second optical element of second optical element 2 and the second light
The angle for learning the 5th surface 25 of element is 120 °.Cemented prism (that is, gluing of the second optical element 2 and the first optical element 1)
The first parallel error be 3 ', the second parallel error be 5 '.
Lens subassembly 110 can be used as aberration correcting lens.Aberration correcting lens include two panels non-spherical lens: the first lens
4 and second lens 3, wherein the first lens 4 are positive lens, the second lens 3 are negative lens.
The directional light that area source generates is through PBS prism (polarization beam splitter, polarization splitting prism)
Back reflection s polarised light enters Lcos, and the image of p-polarization light is emitted after Lcos modulation, is entered after being again introduced into PBS prism
Enter optical system after first lens 4.Human eye to Lcos image planes total optical path length be less than 50mm.Non-spherical lens and prism
Face type tolerance PV value be less than or equal to 1um, thickness deviation be ± 0.03mm, bias be ± 0.03mm, tilting is ± 1 '.
First lens 4, the second lens 3, the second optical element 2, the first optical element 1 thickness deviation be less than or equal to ±
0.02mm, inclination, eccentric tolerance are less than or equal to ± 0.02mm, and face type tolerance PV is less than or equal to 1 micron, and the first parallel error is less than etc.
It is less than or equal to 5 ' in 3 ', second parallel errors, the thickness of second optical element 2 is less than or equal to 5mm.
The lightweight augmented reality of the application optical system structure in conjunction with glasses is simple and compact, and lens group lens are few, rib
Mirror thickness is small and small in size, light-weight, quality of optical imaging is high.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of projecting optical device of augmented reality in conjunction with glasses, which is characterized in that including display unit (5), augmented reality
Portion and diopter glasses portion (120)；
The display unit (5) can export the image information of setting；
The image information that the augmented reality portion can export display unit (5) is by optical waveguide and/or freeform optics member
Part is transmitted to observer (140)；
Extraneous scene (130) can be transmitted to observer (140) by diopter glasses portion (120), and diopter glasses portion
(120) optical path is overlapped in whole or in part with the optical path in augmented reality portion.
2. projecting optical device of the augmented reality according to claim 1 in conjunction with glasses, which is characterized in that the enhancing
Real portion includes the second optical element (2)；Diopter glasses portion (120) includes the first optical element (1)；
Second optical element (2) setting is arranged in display unit (5) in the optical path of display unit (5) to observer (140)
In the transmission path of the image information of output；
External world's scene (130) is successively transmitted to observer by the first optical element (1) and the second optical element (2)
(140)。
3. projecting optical device of the augmented reality according to claim 2 in conjunction with glasses, which is characterized in that the enhancing
Projecting optical device of the reality in conjunction with glasses further includes lens subassembly (110)；
The lens subassembly (110) includes the second lens (3) and the first lens (4)；
Second lens (3) and the first lens (4) are arranged on display unit (5) to the optical path between observer (140), i.e., and
Two lens (3) and the first lens (4) are arranged in the transmission path of image information；
Described image information can correct aberration by the second lens (3) and the first lens (4)；The difference includes the second optics
The aberration that element (2) and/or the first optical element (1) generate.
4. projecting optical device of the augmented reality according to claim 3 in conjunction with glasses, which is characterized in that described first
Lens (4) include rectangle positive lens；Second lens (3) include rectangle negative lens；
First lens (4) include that a spherical surface and one are aspherical；Second lens (3) include a spherical surface and one
It is aspherical；
Second optical element (2) includes one or more free form surfaces；First optical element (1) include it is inclined from
By curved surface；One free form surface of the second optical element (2) and the inclination free form surface of the first optical element (1) are connected, and phase
Part reflective semitransparent film is provided at even.
5. projecting optical device of the augmented reality according to claim 2 in conjunction with glasses, which is characterized in that described second
Optical element (2) includes the arc surface with curvature；First optical element (1) includes focal length correction face；The focal length is rectified
Front can reflect the light of extraneous scene (140) with the refractive index of setting, and by the light of the extraneous scene (140) after refraction
It exports to observer (140).
6. projecting optical device of the augmented reality according to claim 2 in conjunction with glasses, which is characterized in that described second
Optical element (2) can amplify the image information of display unit (5) output, and amplified image information is exported in parallel to observation
Person (140).
7. projecting optical device of the augmented reality according to claim 2 in conjunction with glasses, which is characterized in that described second
Optical element (2) includes three free form surfaces, and the free form surface includes anamorphic aspherical surface, polynomial surface, double cubic surface
And any one of zernike polynomial curved surface or appoint multiple combinations.
8. projecting optical device of the augmented reality according to claim 1 in conjunction with glasses, which is characterized in that described first
Optical element (1) and the second optical element (2) are free curved surface prism；Second lens (3) and the first lens (4) are
Non-spherical lens.
9. projecting optical device of the augmented reality according to claim 2 in conjunction with glasses, which is characterized in that the observation
The horizontal field of view angle of person (140) and vertical field of view tangent of an angle ratio are 16:9 or 4:3.
10. projecting optical device of the augmented reality according to claim 5 in conjunction with glasses, which is characterized in that described outer
Boundary's scene (130) can be transmitted to observer (140) after focal length correction face amendment with the focal length and/or intensity of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075201.0A CN109656025A (en) | 2019-01-25 | 2019-01-25 | Projecting optical device of the augmented reality in conjunction with glasses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910075201.0A CN109656025A (en) | 2019-01-25 | 2019-01-25 | Projecting optical device of the augmented reality in conjunction with glasses |
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| CN109656025A true CN109656025A (en) | 2019-04-19 |
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| CN201910075201.0A Pending CN109656025A (en) | 2019-01-25 | 2019-01-25 | Projecting optical device of the augmented reality in conjunction with glasses |
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