CN109407326A - A kind of augmented reality display system and its manufacturing method based on diffraction integrator - Google Patents
A kind of augmented reality display system and its manufacturing method based on diffraction integrator Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
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- 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
- G02B27/0176—Head mounted characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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Abstract
The invention discloses a kind of augmented reality display systems and its manufacturing method based on diffraction integrator, belong to augmented reality field of display technology.The present invention includes diffraction integrator, is made of ultraviolet light solidification/heat reactive resin layer with surface relief diffraction grating, for virtual image to be reflexed to human eye;Diffraction integrator bearing basement, for carrying diffraction integrator;The diffraction integrator bearing basement is transparent or partially transparent;Ray machine projector, the center with diffraction integrator show source as image, for virtual image to be projected to diffraction integrator at a distance of 5 ~ 60mm.The present invention has the frivolous form of daily glasses, can be completely compatible with daily glasses, and low manufacture cost, flexibility are high, can replicate on a large scale, is suitable for industrial production.
Description
Technical field
The present invention relates to augmented reality field of display technology, in particular to a kind of augmented reality based on diffraction integrator is aobvious
Show system and its manufacturing method.
Background technique
Augmented reality is the new of the same picture or space that real world information and virtual world information are added in real time
Technology.It is added in real world by prompt information, dummy object or virtual scene that computer generates, realizes exceeding reality
Sensory experience.Due to having the characteristic that can carry out enhancing display output to true environment, augmented reality is in data model
Visualization, military weapon research and development have extensively with manufacture, flight navigation, medical training, long-range control, amusement with fields such as art
Application.
Display device in augmented reality is divided into Light Transmission according to displaying principle and video transmission-type two is big
Class.Light Transmission augmented reality display system does not cut off user's reception while allowing user to receive virtual reality information
The display access of real world information.Due to high resolution, no visual deviation, without time delay and more to meet social habit etc. excellent
Gesture, Light Transmission augmented reality display system have become mainstream.Such display system uses transparent devices, or by display
Part is placed on the fringe field of view of user.The Light Transmission near-eye display device that can be realized augmented reality listed at present has
Epson Moverio,Google Glass,Microsoft HoloLens,Magic Leap One。
The optical property of augmented reality display system is the important indicator of comprehensive performance evaluation.However, as wearable
Near-eye display device, ergonomics and aesthetics are also to determine that can product by the well accepted major reason of consuming public.Eye
If the globalization of mirror is universal to illustrate that wearable device has the frivolous form of glasses, consumer can be met and existed to near-eye equipment
The requirement of ergonomics and aesthetics aspect.
It is above-mentioned and existing other augmented realities show equipment currently on the market, compared with glasses, excessively
It is thick and heavy and lack stylishness.For example, the nearly eye image-forming block that EpsonMoverio and GoogleGlass is used is thicker than daily glasses
Much, and limited lateral dimension makes equipment not meet the aesthetic requirement to wearable device.MicrosoftHoloLens
Using optical waveguide as display unit, although the form of optical waveguide is close with glasses, the user of daily wearing spectacles makes
With needing to continue to wear oneself glasses when HoloLens, thus entirety of system still heaviness.MagicLeapOne is also used
For optical waveguide as display unit, however to meet its functional design, equipment can not be compatible with the glasses that user wears, so that
The user to wear glasses can not obtain normal visual experience.Institute on Vehicles Collected from Market is had become in ergonomics and aesthetic defect
There is augmented reality to show that equipment does not generate the major reason of enough user's viscosity in consumer field.
Current augmented reality near-eye display is excessively heavy, and form differs greatly with ideal glasses form.With light
Though waveguide is to show that the augmented reality near-eye display of core is similar to glasses form, can not be from for the user of wearing spectacles
Mirror of widening the view independently uses.
Summary of the invention
In order to make up for the deficiencies of the prior art, the present invention provides a kind of, and the augmented reality based on diffraction integrator shows system
System.
The technical solution of the present invention is as follows:
A kind of augmented reality display system based on diffraction integrator, comprising:
Diffraction integrator is made of ultraviolet light solidification/heat reactive resin layer with surface relief diffraction grating, and being used for will
Virtual image reflexes to human eye;
Diffraction integrator bearing basement, for carrying diffraction integrator;The diffraction integrator bearing basement it is transparent or
It is partially transparent;
Ray machine projector, the center with diffraction integrator show source as image, are used for virtual graph at a distance of 5~60mm
As being projected to diffraction integrator.
Preferably, the diffraction integrator has the arc grating of non-constant period.
Preferably, zero visual field master of the central junction line of ray machine projector and diffraction integrator and ray machine projector
Light is overlapped.
Preferably, the diffraction integrator bearing basement is that two surfaces are parallel to each other, directional light without focal power
It learns plate or two surfaces parallel surfaces plate parallel to each other, without focal power or itself has recessed used in the myopia correction of focal power
Lens-type eyeglass itself has lenticular lens type eyeglass used in the correction long sight of focal power.
Preferably, the diffraction integrator bearing basement is eyeglass, and the eyeglass includes left eyeglass lens
Piece and right eye eyeglass, the eyeglass are fixed on the frame of spectacle frame.
Further, the diffraction integrator includes left eye diffraction integrator and right eye diffraction integrator;The left eye spreads out
It penetrates integrator and is fixed on left eyeglass lens;The right eye diffraction integrator is fixed on right eye eyeglass;The ray machine projector includes a left side
Eye machine projector and right eye ray machine projector;Left eye ray machine projector is fixed on left eye frame or left mirror leg, and being used for will be virtual
Image reflexes to the left eye of user;Right eye ray machine projector is fixed on right eye frame or right temple, for reflecting virtual image
To the right eye of user.
Preferably, the ray machine projector is micro-display or micro-display and the combination of lens/lens group.
The manufacturing method of the augmented reality display system based on diffraction integrator, comprising steps of
1) diffraction integrator mother matrix is made using lithography method;
2) precursor of elastic submodule is placed in diffraction integrator mother matrix, it is female from diffraction integrator after polymerization forming
It is detached from version, obtains elastic submodule, include the former that need to transfer diffraction integrator structure in obtained elastic submodule;
3) UV-cured resin or heat reactive resin drop are integrated in integrator bearing basement in diffraction, is smeared uniform;
4) elastic submodule is pressed onto diffraction with pressure to integrate in integrator bearing basement, so that resin is sufficiently scattered and fills bullet
The cavity of temper mould, by ultraviolet lighting or heating so that polymerization and curing molding occur for the polymer of imprinting area;
5) elastic submodule is integrated from diffraction and is removed in integrator bearing basement, it is whole to realize that diffraction integrator is fixed on diffraction
It closes in integrator bearing basement;
6) it is configured to for virtual image to be projected to the ray machine projector of diffraction integrator.
Preferably, the elastic submodule is PDMS elasticity submodule.It can certainly be other resin materials.
Preferably, the lithography method of diffraction integrator mother matrix includes electron beam lithography, reactive ion beam quarter
Erosion, magnetic intensified response ion etching, high density plasma etch, inductive coupling type plasma etching, transformation manifold type etc.
Plasma etching or electron cyclotron resonance etching.
Preferably, the augmented reality display system based on diffraction integrator, further includes:
Exterior space collector, for obtaining external environment real scene;
Position sensor, for obtaining external environment three-dimensional spatial position information;
Computing unit is communicated to connect with exterior space collector and position sensor, to receive exterior space acquisition
The external environment real scene information of device acquisition and the external environment three-dimensional spatial position information of position sensor acquisition;It calculates single
Member is also connect with ray machine projector, is supplied to the virtual image signal of right and left eyes for generating and is transmitted to virtual image signal
Ray machine projector.
Further, the exterior space collector is made of single or multiple cameras, is fixed at frame or temple
On;
The position sensor is made of accelerometer, gyroscope, magnetometer and GPS receiver, is fixed on
On frame or temple;
The computing unit includes central processing unit, graphics processor, caching, random access memory, camera interface, shows
Show device driving, network interface, setting frame or temple or as with the mutually independent unit of glasses;The computing unit passes through
Camera interface connects exterior space collector;The central processing unit of the computing unit passes through the acceleration of circuit and position sensor
Degree meter, gyroscope, magnetometer are connected with GPS receiver.
Further, the augmented reality display system based on diffraction integrator, further includes:
Remote computing system is made of one or more processors, wired or wireless with computing unit by network interface
Connection;To receive and process the external environment real scene information and three-dimensional spatial position information of computing unit acquisition, and it is
Image signal process occurs for computing unit.
The invention has the benefit that
1, the augmented reality display system of the invention based on diffraction integrator has the frivolous form of daily glasses, can be with
It is completely compatible with daily glasses.
2, the augmented reality display system of the invention based on diffraction integrator is convenient for production, low manufacture cost flexibility
Height can replicate on a large scale, be suitable for industrial production.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is that the present invention is based on a kind of signals of the composed structure of embodiment of augmented reality display system of diffraction integrator
Figure;
Fig. 2 is the hardware that computing unit and exterior space collector, position sensor, micro-display, eye track camera
Connect block diagram;
Fig. 3 is that computing unit and exterior space collector, position sensor, micro-display, eye track camera, microphone
Deng hardware connect block diagram;
Fig. 4 is cuing open for component contained by the exemplary side frame of augmented reality glasses first and its inside based on diffraction integrator
Depending on structural schematic diagram;
Fig. 5 is cuing open for component contained by the exemplary side frame of augmented reality glasses second and its inside based on diffraction integrator
Depending on structural schematic diagram;
Fig. 6 is cuing open for component contained by the exemplary side frame of augmented reality glasses third and its inside based on diffraction integrator
Depending on structural schematic diagram;
Fig. 7 is the first exemplary construction schematic diagram of diffraction integrator and its bearing basement;
Fig. 8 is the second exemplary construction schematic diagram of diffraction integrator and its bearing basement;
Fig. 9 is the third exemplary construction schematic diagram of diffraction integrator and its bearing basement;
Figure 10 is the 4th exemplary construction schematic diagram of diffraction integrator and its bearing basement;
Figure 11 is the positive structure diagram of the augmented reality glasses based on diffraction integrator;
Figure 12 is the brief processing step of nano impression;
Figure 13 is the exemplary SEM test chart of diffraction integrator arc grating first;
Figure 14 is the exemplary SEM test chart of diffraction integrator arc grating second;
Figure 15 is augmented reality glasses exemplary structural schematic diagram of the embodiment 2 based on diffraction integrator;
Figure 16 is augmented reality glasses exemplary structural schematic diagram of the embodiment 3 based on diffraction integrator;
Figure 17 connect block diagram with another hardware of exterior space collector, position sensor, micro-display for computing unit;
Figure 18 is that the hardware refined inside computing unit in Figure 17 connects block diagram.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
It will be understood by those skilled in the art that in exposure of the invention, term " longitudinal direction ", " transverse direction ", "upper",
The orientation of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore above-mentioned art
Language is not considered as limiting the invention.
In the present invention, term " one " is interpreted as " one or more " in claim and specification, i.e., in a reality
Example is applied, the quantity of an element can be one, and in a further embodiment, the quantity of the element can be multiple.Unless
Clearly illustrate in exposure of the invention the element quantity only one, otherwise term " one " can not be interpreted as unique or single
One, term " one " should not be understood as the limitation to quantity.
In the description of the present invention, it is to be understood that, belong to " first ", " second " etc. to be used for description purposes only, without
It can be interpreted as indicating or implying relative importance.In description of the invention, it should be noted that unless otherwise specific regulation
And restriction, belong to " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or
Person is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be and be directly connected to, be also possible to by between medium
It ties in succession.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be
Concrete meaning.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
A kind of augmented reality display system based on diffraction integrator, comprising:
Diffraction integrator is made of ultraviolet light solidification/heat reactive resin layer with surface relief diffraction grating, and being used for will
Virtual image reflexes to human eye;
Diffraction integrator bearing basement, for carrying diffraction integrator;The diffraction integrator bearing basement it is transparent or
It is partially transparent;
Ray machine projector, the center with diffraction integrator show source as image, are used for virtual graph at a distance of 5~60mm
As being projected to diffraction integrator.
Preferably, the diffraction integrator has the arc grating of non-constant period.
Preferably, zero visual field master of the central junction line of ray machine projector and diffraction integrator and ray machine projector
Light is overlapped.
Preferably, the diffraction integrator bearing basement is that two surfaces are parallel to each other, directional light without focal power
It learns plate or two surfaces parallel surfaces plate parallel to each other, without focal power or itself has recessed used in the myopia correction of focal power
Lens-type eyeglass itself has lenticular lens type eyeglass used in the correction long sight of focal power.
Preferably, the diffraction integrator bearing basement is eyeglass, and the eyeglass includes left eyeglass lens
Piece and right eye eyeglass, the eyeglass are fixed on the frame of spectacle frame.
Further, the diffraction integrator includes left eye diffraction integrator and right eye diffraction integrator;The left eye spreads out
It penetrates integrator and is fixed on left eyeglass lens;The right eye diffraction integrator is fixed on right eye eyeglass;The ray machine projector includes a left side
Eye machine projector and right eye ray machine projector;Left eye ray machine projector is fixed on left eye frame or left mirror leg, and being used for will be virtual
Image reflexes to the left eye of user;Right eye ray machine projector is fixed on right eye frame or right temple, for reflecting virtual image
To the right eye of user.
Preferably, the ray machine projector is micro-display or micro-display and the combination of lens/lens group.
The manufacturing method of the augmented reality display system based on diffraction integrator, comprising steps of
1) diffraction integrator mother matrix is made using lithography method;
2) precursor of elastic submodule is placed in diffraction integrator mother matrix, it is female from diffraction integrator after polymerization forming
It is detached from version, obtains elastic submodule, include the former that need to transfer diffraction integrator structure in obtained elastic submodule;
3) UV-cured resin or heat reactive resin drop are integrated in integrator bearing basement in diffraction, is smeared uniform;
4) elastic submodule is pressed onto diffraction with pressure to integrate in integrator bearing basement, so that resin is sufficiently scattered and fills bullet
The cavity of temper mould, by ultraviolet lighting or heating so that polymerization and curing molding occur for the polymer of imprinting area;
5) elastic submodule is integrated from diffraction and is removed in integrator bearing basement, it is whole to realize that diffraction integrator is fixed on diffraction
It closes in integrator bearing basement;
6) it is configured to for virtual image to be projected to the ray machine projector of diffraction integrator.
Preferably, the elastic submodule is PDMS elasticity submodule.
Preferably, the lithography method of diffraction integrator mother matrix includes electron beam lithography, reactive ion beam quarter
Erosion, magnetic intensified response ion etching, high density plasma etch, inductive coupling type plasma etching, transformation manifold type etc.
Plasma etching or electron cyclotron resonance etching.
Embodiment 1
As Figure 1 and Figure 4, a kind of augmented reality display system 101 based on diffraction integrator, comprising: left eye diffraction is whole
Clutch 102, right eye diffraction integrator 103;Left eye diffraction integrator 102, right eye diffraction integrator 103 are with surface relief
Ultraviolet light solidification/heat reactive resin layer of diffraction grating, for virtual image to be reflexed to human eye.
It include left eyeglass lens and right eye eyeglass, diffraction of the left eyeglass lens as left eye diffraction integrator 102 on spectacle-frame 104
Integrator bearing basement, diffraction integrator bearing basement of the right eye eyeglass as right eye diffraction integrator 103.Left eyeglass lens and the right side
Spectacle lens are transparent or partially transparent, for allowing user to see external real scene.
Ray machine projector 401 is provided in right temple and left mirror leg.The ray machine projector 401 and left eye diffraction on the left side are whole
The center of clutch 102 shows source at a distance of 5~60mm, as image, for virtual image to be projected to left eye diffraction integrator
102;The ray machine projector 401 on the right and the center of right eye diffraction integrator 103 show source as image, use at a distance of 5~60mm
In virtual image is projected to right eye diffraction integrator 103.
When using apparatus of the present invention, diffraction integrator bearing basement and diffraction integrator are located at 5~50mm in front of human eye.
The available lithography method of diffraction integrator mother matrix includes electron beam lithography, reactive ion beam etching (RIBE), magnetic enhancing
Reactive ion etching, high density plasma etch, inductive coupling type plasma etching, transformation coupled plasma etching
It is etched with electron cyclotron resonance.Structure on mother matrix can pass through nano-imprint method, casting, die pressing, injection die pressing etc.
It copies in the resin material of duplicate plate, to adapt to scale of mass production and reduce the demand of manufacturing cost.
The method that nano impression is manufactured as large-scale low-cost can be used in diffraction integrator.Mother matrix can be by above-mentioned
Various lithographic methods obtain.The precursor of elastic submodule material solidifies in mother matrix, is detached from, obtains from mother matrix after polymerization forming
To the elastic submodule for nano impression.PDMS is the common materials for making elastic submodule.Figure 12 illustrates nano impression
Brief processing step.It has included the former that need to transfer diffraction integrator structure in elastic submodule 901 when technique starts, it will be purple
For the outer drop of light-cured resin 903 in bearing basement 701, the method that spin coating can be used makes resin uniform fold substrate.It will with pressure
Elastic submodule is pressed onto bearing basement, is opened resin dispersion and is filled the cavity of elastic submodule, passes through the ultraviolet light of elastic submodule
According to the polymer generation polymerization and curing molding for making imprinting area.Finally, elastic submodule is removed from bearing basement, realize
The structure of diffraction integrator to bearing basement transfer.
Preferably, as shown in figure 11, the position and direction according to micro-display in system relative to diffraction integrator, and
Position at the virtual image relative to diffraction integrator, the diffraction structure of diffraction integrator be typically designed with non-constant period
Arc grating.The distance range of micro-display and diffraction integrator is generally 10mm~30mm, augmented reality glasses virtual image position
The setting range set is generally 25cm~infinity.
Figure 13,14 illustrate two exemplary SEM test charts of diffraction integrator arc grating.Wherein diffraction integrator arc
Grating has the form of Surface gratings, and grating tooth section is rectangle straight-tooth.Figure 13 and Figure 14 show duty ratio respectively
Two different rectangle straight-tooth examples.In addition to rectangle straight-tooth, the tooth form of diffraction integrator can also be stepped tooth, lance tooth etc.
The independent assortment of two-dimensional shapes and straight-tooth or helical teeth.
Preferably, zero visual field master of the central junction line of ray machine projector and diffraction integrator and ray machine projector
Light is overlapped.Ray machine projector is required relative to the spatial position of diffraction integrator: ray machine projector is visually virtual not to user
Field angle and visual perspective field angle are blocked.
Preferably, the ray machine projector is micro-display or micro-display and the combination of lens/lens group.
As shown in figure 4, the present embodiment is based on the ray machine projector 401 in the augmented reality display system of diffraction integrator,
It can be placed, but be not limited in glasses side frame.In this example, ray machine projector 401 is by micro-display 206 and lens group
402 are constituted.The image that micro-display 206 projects in the ray machine projector 401 on right side passes through right eye after the amplification of lens group 402
Enter the right eye of people after 103 diffraction of diffraction integrator;The image that micro-display 206 projects in the ray machine projector 401 in left side, warp
Pass through the left eye after 102 diffraction of left eye diffraction integrator into people after the amplification of lens group 402.
Lens group 402 is made of one or more pieces lens.Transmissive type liquid crystal display can be used in micro-display 206
(LCD) projection of backlight is modulated to form image by liquid crystal molecule, it is possible to use reflective modulation system, wherein commonly
There are Digital Light Processor (DLP) and liquid crystal on silicon (LCoS).Self luminous Organic Light Emitting Diode also can be used in micro-display 206
(OLED) and micro- light emitting diode (Micro LED).
Certainly, the pretreatment that the lens group of optional lens or multi-disc lens composition carries out image, including it is a variety of, such as:
By image transmission to infinity, or the real image zoomed in or out is processed the image into, or by image at the virtual image zoomed in or out
Deng.
Fig. 5 illustrates another augmented reality display system example based on diffraction integrator, does not use lens group pair
Image is pre-processed, but the image of micro-display 206 is directly projected to right eye diffraction integrator 103, after its diffraction
Into human eye.Micro-display 206 is using face battle array display, including transmissive type liquid crystal display (LCD), Digital Light Processor
(DLP), liquid crystal on silicon (LCoS), Organic Light Emitting Diode (OLED) and micro- light emitting diode (Micro LED).
Fig. 6 illustrates the third example of the augmented reality display system based on diffraction integrator, wherein micro electromechanical scanning
Galvanometer 601 (MEMS Scanning Mirror) shows source as image, and laser beam transmission to right eye is spread out by vibration mirror scanning
Integrator 103 is penetrated, human eye is entered after its diffraction.
As shown in fig. 7, the bearing basement 701 of diffraction integrator can be, two surfaces are parallel to each other, no focal power it is parallel
Optical flat, it is parallel to each other to be also possible to two surfaces as shown in Figure 8, the parallel surfaces of no focal power.Due to both examples
The bearing basement 701 of middle diffraction integrator does not have focal power, thus the user crowd without wearing spectacles is suitble to use.
The bearing basement 701 of diffraction integrator is also possible to two uneven surface rows, itself has the structure of focal power.Such as figure
Shown in 9, the bearing basement 701 of diffraction integrator can have concavees lens type glasses function used in myopia correction.Analogously,
The bearing basement 701 of diffraction integrator can have lenticular lens type glasses function used in correction long sight as indicated by 10.
When diffraction integrator is located in the bearing basement of parallel flat, diffraction integrator self structure is without bending, thus
It does not have due to warp architecture bring additional optical focal power, and total focal power φ of diffraction integrator is entirely from integration at this time
The diffraction optical power φ of devicedifNamely the focal length f of diffraction integrator is equal to its diffractive focal fdif.That is,
φ=φdif(1)
F=fdif(2)
When diffraction integrator is located on the curved surface of bearing basement, diffraction integrator self structure with base curvature song
Rate carries out conformal bending, thus brings additional structure focal power φcur, total focal power of diffraction integrator is equal to diffraction light at this time
Focal power φdifWith additional structure focal power φcurSummation, the focal length f and diffractive focal f of diffraction integratordifWith additional structure coke
Away from fcurBetween relationship follow equation (4).
φ=φdif+φcur(3)
Preferably, the augmented reality display system based on diffraction integrator, further includes:
Exterior space collector 107, for obtaining external environment real scene;It is preferred that but being not limited to be arranged in frame
104 middle part;
Position sensor 106 in this example but is not limited to be arranged for obtaining external environment three-dimensional spatial position information
In left mirror leg;
Computing unit 105 is communicated to connect with exterior space collector 107 and position sensor 106, in this example but
It is not limited to be arranged in left mirror leg;To receive external environment real scene information and the position of the acquisition of exterior space collector 107
The external environment three-dimensional spatial position information that sensor 106 acquires;Computing unit 105 is also connect with ray machine projector 401, is used for
It generates the virtual image signal for being supplied to right and left eyes and virtual image signal is transmitted to ray machine projector 401.
As shown in Figure 17, Figure 18, in this example, the computing unit 105 configured on spectacle frame may include centre
It manages device 301, graphics processor 302, caching 303 and random access memory 304 to form, the place to Various types of data and figure
Reason, caching and storage.The corresponding picture signal of right and left eyes is output to micro display by display driving 306 by computing unit 105
Device 206, so that user obtains three-dimensional stereoscopic visual experience.Framed representation left eye is folded for micro-display 206 corresponding two in Fig. 2
With each micro-display of right eye.
Computing unit 105 is communicated with position sensor 106 and exterior space collector 107 simultaneously, as shown in Fig. 2, position
Sensor 106 may include accelerometer 201, gyroscope 202, magnetometer 203 and GPS receiver 204.It calculates single
The central processing unit of member 105 is received by circuit and accelerometer 201, gyroscope 202, magnetometer 203 and global positioning system
The communication of device 204 (the communication connection side of central processing unit and accelerometer, gyroscope, magnetometer and GPS receiver
Formula is the prior art, is repeated no more).Position sensor 106 is that augmented reality system determines the position in given coordinate system
And direction, this includes along the one-movement-freedom-degree of three rectangular co-ordinate axis directions and around the rotational freedom of these three reference axis.Meter
Unit 105 is calculated by after the output processing of position sensor 106, determines output position of the virtual image in given coordinate system, then
Virtual image is accurately rendered in real world by display interface device.
Exterior space collector 107 may include single or multiple cameras, can be RGB camera, monochrome cameras and depth phase
The combination of machine.RGB camera or monochrome cameras obtain the real scene of external environment, and depth camera obtains the depth letter of extraneous scene
Breath can get the complete information of reality scene when depth camera is parallel and synchronous in timing with the optical axis of other cameras.
In this example, computing unit 105 is connect by camera interface 305 with the camera as exterior space collector 107.
As shown in Figure 2 and Figure 3, the camera interface 305 of computing unit 105 can also communicate to connect eye tracking camera 205,
Eye tracks 205 left side of camera and each one of the right.Computing unit 105 obtains left eye and the right side from eye tracking camera 205
Image of the eye under infrared illumination, to calculate the direction of visual lines of eyes.
It, will be matched with external environment real scene after computing unit 105 handles the output of exterior space collector 107
Virtual image is exported to the micro-display 206 of ray machine projector;After computing unit 105 handles the output of position sensor 106,
Virtual image is accurately rendered to the suitable position in reality scene.In this way human eye can observe simultaneously reality scene and with
The matched virtual image of reality scene environment and position.
Each component of position sensor 106 can be mutually indepedent with computing unit 105, can also be with meter by circuit connection
It is integrated on a single die to calculate unit 105.
Also settable audio interface 307, camera caching 308, memory control 309 etc. on computing unit 105.Memory control
System 309 can connect external memory 311 by circuit.The image that camera caching 308 can acquire exterior space collector 107
Information is stored, and is transferred by central processing unit 301 and graphics processor 302;Audio interface 307 can connect microphone 313
With earphone 314.
Remote computing system 108 can be carried out wired or wireless by the computing unit 105 of network interface 310 and glasses end
Communication, provides computing capability especially for it.In some embodiments, remote computing system 108 can be handled by one or more
Device is constituted, to handle the data acquired by position sensor 106 and/or exterior space collector 107.Meanwhile remote computation
System 108 can also be used for generating the picture signal for being supplied to right and left eyes.
In some embodiments, remote computing system 108 also can be used as unique computing unit generation of augmented reality system 101
For the computing unit 105 at glasses end.In some embodiments, all data processings can be completely by the computing unit at glasses end
105 complete, and without using remote computing system 108, augmented reality system 101 are made to be integrally formed formula structure.
Embodiment 2
As shown in figure 15, a kind of augmented reality display system based on diffraction integrator, including diffraction integrator, diffraction are whole
Clutch bearing basement and micro-display.
Wherein, diffraction integrator bearing basement includes left eye diffraction integrator bearing basement 8014 and right eye diffraction integrator
Bearing basement 7014.Left eye diffraction integrator bearing basement 8014 and right eye diffraction integrator bearing basement 7014 are not have
The transparent optical parallel plate of focal power.
Micro-display includes left part micro-display 2061, right part micro-display 2062.Left part micro-display 2061, right part are micro-
Display 2062 cooperates with left eye diffraction integrator 102, right eye diffraction integrator 103 respectively, and left part micro-display 2061 is used for
Virtual image is projected to left eye diffraction integrator 102, right part micro-display 2062 spreads out for virtual image to be projected to right eye
Penetrate integrator 103.
Left eye diffraction integrator 102 is fixed in left eye diffraction integrator bearing basement 8014, right eye diffraction integrator is held
It carries and is fixed with right eye diffraction integrator 103 in substrate 7014.Left eye diffraction integrator 102, right eye diffraction integrator 103 are tool
There is ultraviolet light solidification/heat reactive resin layer of surface relief diffraction grating, left eye diffraction integrator 102 is used for left part micro display
The virtual image of device 2061 reflexes to the left eye of people, and right eye diffraction integrator 103 is used for the virtual of right part micro-display 2062
Image reflexes to the right eye of people.Diffraction grating structure on left eye diffraction integrator 102, right eye diffraction integrator 103 is non-perseverance
The arc grating of fixed cycle.
Table 1 lists the relevant parameter of micro-display in the present embodiment, and table 2 lists the system parameter of the present embodiment.Table 3
List the structural parameters of the present embodiment.Table 4 lists the structural parameters for the diffraction integrator grating that the present embodiment is included.
Table 1
Table 2
Table 3
Table 4
Embodiment 3
As shown in figure 16, a kind of augmented reality display system 101 based on diffraction integrator, including diffraction integrator, spread out
Penetrate integrator bearing basement and micro-display.
Wherein, diffraction integrator bearing basement includes left eye diffraction integrator bearing basement 8014 and right eye diffraction integrator
Bearing basement 7014.Left eye diffraction integrator bearing basement 8014 and right eye diffraction integrator bearing basement 7014 are that correction is close
Depending on concavees lens used.As shown in figure 9, diffraction integrator is located at the concave surface of the close glasses of bearing basement concavees lens.
Micro-display includes left part micro-display 2061, right part micro-display 2062.Left part micro-display 2061, right part are micro-
Display 2062 cooperates with left eye diffraction integrator 102, right eye diffraction integrator 103 respectively, and left part micro-display 2061 is used for
Virtual image is projected to left eye diffraction integrator 102, right part micro-display 2062 spreads out for virtual image to be projected to right eye
Penetrate integrator 103.
Left eye diffraction integrator 102 is fixed in left eye diffraction integrator bearing basement 8014, right eye diffraction integrator is held
It carries and is fixed with right eye diffraction integrator 103 in substrate 7014.Left eye diffraction integrator 102, right eye diffraction integrator 103 are tool
There is ultraviolet light solidification/heat reactive resin layer of surface relief diffraction grating, left eye diffraction integrator 102 is used for left part micro display
The virtual image of device 2061 reflexes to the left eye of people, and right eye diffraction integrator 103 is used for the virtual of right part micro-display 2062
Image reflexes to the right eye of people.Diffraction grating structure on left eye diffraction integrator 102, right eye diffraction integrator 103 is non-perseverance
The arc grating of fixed cycle.
Table 5 lists the relevant parameter of micro-display in the present embodiment, and table 6 lists the system parameter of the present embodiment.Table 7
List the structural parameters of the present embodiment.Table 8 lists the structural parameters for the diffraction integrator grating that the present embodiment is included.
Table 5
Table 6
Table 7
Table 8
Claims (10)
1. a kind of augmented reality display system based on diffraction integrator characterized by comprising
Diffraction integrator is made of ultraviolet light solidification/heat reactive resin layer with surface relief diffraction grating, and being used for will be virtual
Image reflexes to human eye;
Diffraction integrator bearing basement, for carrying diffraction integrator;The diffraction integrator bearing basement is transparent or part
It is transparent;
Ray machine projector, the center with diffraction integrator show source as image, for projecting virtual image at a distance of 5 ~ 60mm
To diffraction integrator.
2. as described in claim 1 based on the augmented reality display system of diffraction integrator, it is characterised in that: the diffraction integration
Device has the arc grating of non-constant period.
3. as described in claim 1 based on the augmented reality display system of diffraction integrator, it is characterised in that: ray machine projector and
The central junction line of diffraction integrator is overlapped with zero visual field chief ray of ray machine projector.
4. as described in claim 1 based on the augmented reality display system of diffraction integrator, it is characterised in that: the diffraction integration
Device bearing basement is that two surfaces collimating optics plate or two surfaces parallel to each other, without focal power are parallel to each other, without focal power
Parallel surfaces plate itself has concavees lens type eyeglass used in the myopia correction of focal power or itself has focal power
Correct lenticular lens type eyeglass used in long sight.
5. as described in claim 1 based on the augmented reality display system of diffraction integrator, it is characterised in that: the diffraction integration
Device bearing basement is eyeglass, and the eyeglass includes left eyeglass lens and right eye eyeglass, and the eyeglass is fixed on eye
The frame of mirror holder.
6. as claimed in claim 5 based on the augmented reality display system of diffraction integrator, it is characterised in that: the diffraction integration
Device includes left eye diffraction integrator and right eye diffraction integrator;The left eye diffraction integrator is fixed on left eyeglass lens;The right side
Eye diffraction integrator is fixed on right eye eyeglass;The ray machine projector includes left eye ray machine projector and right eye ray machine projector;
Left eye ray machine projector is fixed on left eye frame or left mirror leg, for virtual image to be reflexed to the left eye of user;Right eye ray machine
Projector is fixed on right eye frame or right temple, for virtual image to be reflexed to the right eye of user.
7. as described in claim 1 based on the augmented reality display system of diffraction integrator, it is characterised in that: the ray machine projection
Device is micro-display or micro-display and the combination of lens/lens group.
8. the manufacturing method of the augmented reality display system based on diffraction integrator as described in claim 1, which is characterized in that packet
Include step:
1) diffraction integrator mother matrix is made using lithography method;
2) precursor of elastic submodule is placed in diffraction integrator mother matrix, after polymerization forming, from diffraction integrator mother matrix
It is detached from, obtains elastic submodule, include the former that need to transfer diffraction integrator structure in obtained elastic submodule;
3) UV-cured resin or heat reactive resin drop are integrated in integrator bearing basement in diffraction, is smeared uniform;
4) elastic submodule is pressed onto diffraction with pressure to integrate in integrator bearing basement, resin is made sufficiently to scatter and fills elastic son
The cavity of mould, by ultraviolet lighting or heating so that polymerization and curing molding occur for the polymer of imprinting area;
5) elastic submodule is integrated from diffraction and is removed in integrator bearing basement, it is whole to realize that diffraction integrator is fixed on diffraction integration
In clutch bearing basement;
6) it is configured to for virtual image to be projected to the ray machine projector of diffraction integrator.
9. the manufacturing method of the augmented reality display system based on diffraction integrator as claimed in claim 8, it is characterised in that: institute
Stating elastic submodule is PDMS elasticity submodule.
10. the manufacturing method of the augmented reality display system based on diffraction integrator as claimed in claim 8, it is characterised in that:
The lithography method of diffraction integrator mother matrix include electron beam lithography, reactive ion beam etching (RIBE), magnetic intensified response ion etching,
High density plasma etch, inductive coupling type plasma etching, transformation coupled plasma etching or electron cyclotron are total
Vibration formula etching.
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