Invention content
It is a primary object of the present invention to provide a kind of nearly eye field display device, shown with solving nearly eye of the prior artThere are vision influx adjusting collision problems for showing device.
To achieve these goals, according to an aspect of the invention, there is provided a kind of nearly eye field display device, packetIt includes：Micro-display, for showing two-dimensional images, two dimensional image is made of image light；Spatial light modulator, positioned at micro displayThe side of device for adjusting the deflection angle of image light, makes the image light of at least two width two dimensional images have different propagation sidesTo；Image-forming component, positioned at the side of spatial light modulator, for the image light after adjusting to be focused on to the different location shape of human eyeInto viewpoint, pupil of human diameter is smaller than between each viewpoint.
Further, nearly eye field display device further includes optical waveguide components, and optical waveguide components are located at the one of micro-displaySide, spatial light modulator are located at outside optical waveguide components or inside optical waveguide components, and optical waveguide components are used to transmit image light.
Further, optical waveguide components are fully-reflected type waveguide.
Further, micro-display shows two dimensional image for sequential, and spatial light modulator includes：It is coupled into space light modulationDevice, inside a side surface of optical waveguide components or optical waveguide components, for image to be optically coupled into optical waveguide components；CouplingGo out spatial light modulator, inside a side surface of optical waveguide components or optical waveguide components, cut with micro-display synchronous sequenceIt changes, to export the image light of different directions.
Further, spatial light modulator and decoupling spatial light modulator are coupled into and is separately selected from reflection type spatial lightAny one of modulator and transmissive spatial optical modulator.
Further, optical waveguide components have incidence surface and light-emitting surface, and incidence surface and light-emitting surface are the same of optical waveguide componentsOne side surface or incidence surface and light-emitting surface are respectively the opposite both side surface of optical waveguide components, and micro-display is close to incidence surfaceSetting, image-forming component are set close to light-emitting surface.
Further, spatial light modulator and decoupling spatial light modulator are coupled into and includes at least one modulation module, is adjustedMolding block includes lens array column modulation module and/or grating array formula is modulated, and preferably decoupling spatial light modulator is changeableBragg grating.
Further, nearly eye field display device further includes the collimation being set between micro-display and spatial light modulatorOptical element.
Further, micro-display is selected from LCD, LED, OLED, LCOS, micro LED, micro OLED and projection deviceAny one of.
Further, nearly eye field display device is head-mounted display.
It applies the technical scheme of the present invention, a kind of nearly eye field display device is provided, including micro-display, spatial light tuneDevice and image-forming component processed, above-mentioned micro-display is for showing two-dimensional images, since above-mentioned spatial light modulator can adjustThe deflection angle of described image light, make at least two width two dimensional images described image light have the different directions of propagation, it is above-mentioned intoElement can will converge to position of human eye by the image light that spatial light modulator adjusts, and the two dimensional image light after adjustment is imagedElement is assembled to form high density viewpoint at human eye, these viewpoints are densely arranged at position of human eye, due to above-mentioned viewpoint spacingLess than pupil of human diameter, so that entering human eye more than more than two viewpoints, monocular vision Depth cue is generated, effectivelyIt solves vision influx and adjusts collision problem.
Description of the drawings
The Figure of description for forming the part of the present invention is used to provide further understanding of the present invention, and of the invention showsMeaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of nearly eye field display device that a kind of preferred embodiment according to the present invention providesFigure；
The structure of nearly eye field display device provided Fig. 2 shows another preferred embodiment according to the present invention is shownIt is intended to；
Fig. 3 shows that one kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is respectively positioned on light waveThe structure diagram of nearly eye field display device inside guiding element；
Fig. 4 shows that one kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is located at optical waveguideThe structure diagram of the nearly eye field display device of component inner surface；
Fig. 5 shows that one kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is located at optical waveguideThe structure diagram of the nearly eye field display device of component outer surface；
Fig. 6 shows that another kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is located at light waveThe structure diagram of the nearly eye field display device of guiding element outer surface；
Fig. 7 shows that another kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is respectively positioned on lightThe structure diagram of nearly eye field display device inside waveguide component；And
Fig. 8 shows that one kind according to the present invention is coupled into spatial light modulator and decoupling spatial light modulator is located at optical waveguideThe structure diagram of the nearly eye field display device on element opposite sides surface.
Wherein, above-mentioned attached drawing is marked including the following drawings：
10th, micro-display；20th, spatial light modulator；210th, it is coupled into spatial light modulator；220th, decoupling space light modulationDevice；30th, image-forming component；40th, human eye；50th, optical waveguide components；60th, collimation optics.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phaseMutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present inventionThe technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is onlyThe embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill peopleMember's all other embodiments obtained without making creative work should all belong to the model that the present invention protectsIt encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this wayData can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein.In addition, term " comprising " and " toolHave " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unitProcess, method, system, product or equipment are not necessarily limited to those steps or unit clearly listed, but may include without clearIt is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
As described in background technology, nearly eye display device of the prior art adjusts conflict there are vision influx and asksTopic.Present inventor is studied regarding to the issue above, it is proposed that a kind of nearly eye field display device, such as Fig. 1 and 2 institutesShow, including：Micro-display 10, for showing two-dimensional images, each two dimensional image is made of image light；Spatial light modulator20, positioned at the side of micro-display 10, for adjusting the deflection angle of image light, have the image light of at least two width two dimensional imagesThere is the different directions of propagation；Image-forming component 30 positioned at the side of spatial light modulator 20, focuses on for the image light after adjusting40 pupil diameter of human eye is smaller than between the different location formation viewpoint of human eye 40, each viewpoint.
Since above-mentioned nearly eye field display device spatial light modulator can adjust the deflection angle of image light, make at leastThe image lights of two width two dimensional images has the different directions of propagation, and above-mentioned image-forming component can will be adjusted by spatial light modulatorImage light converges to position of human eye, and the imaged element of two dimensional image light after adjustment is assembled to form high density viewpoint at human eye,These viewpoints are densely arranged at position of human eye, since above-mentioned viewpoint is smaller than pupil of human diameter, so that more than twoA Yi Shang viewpoint enters human eye, generates monocular vision Depth cue, efficiently solves vision influx and adjusts collision problem.
Above-mentioned nearly eye field display device can also include optical waveguide components 50, and optical waveguide components 50 are located at micro-display 10Side, spatial light modulator 20 is located inside the outside of optical waveguide components 50 or optical waveguide components 50, which usesIn transmitting image light, above-mentioned optical waveguide components 50 are either planar structure can also be curved-surface structure.Preferably, above-mentioned light waveGuiding element 50 is fully-reflected type waveguide.At this point, it can be sent out inside optical waveguide components 50 by the image light of the optical waveguide components 50Raw total reflection, and adjusted after deflection angle by spatial light modulator 20 and projected from optical waveguide components 50, above-mentioned fully-reflected type waveguideImage light is can be realized as without larger size effectively to propagate, so as to make nearly eye field display device more frivolous.
In order to effectively adjust the deflection angle of image light, make image light by above-mentioned optical waveguide components 50 by intoThe different location of human eye 40 can be focused on after element 30, in a preferred embodiment, above-mentioned micro-display 10 is usedTwo dimensional image is shown in sequential, at this point, above-mentioned spatial light modulator 20 includes being coupled into spatial light modulator 210 and decoupling spatial lightModulator 220 is coupled into spatial light modulator 210 and is located inside a side surface of optical waveguide components 50 or optical waveguide components 50, usesIn image is optically coupled into optical waveguide components 50；Decoupling spatial light modulator 220 is located at a side surface of optical waveguide components 50Or inside optical waveguide components 50, switch with 10 synchronous sequence of micro-display, to export the image light of different directions.
In the above-mentioned nearly eye field display device of the present invention, it is coupled into spatial light modulator 210 and the light modulation of decoupling spaceDevice 220 is separately selected from any one of reflective spatial light modulator and transmissive spatial optical modulator.According to being coupled intoThe difference of 220 type of spatial light modulator 210 and decoupling spatial light modulator, micro-display 10 and image-forming component 30 can be independentGround is located at the both sides of optical waveguide components 50, at this point, above-mentioned optical waveguide components 50 have incidence surface and light-emitting surface, incidence surface and light extractionFace is opposite both sides table that the same side surface of optical waveguide components 50 or incidence surface and light-emitting surface are respectively optical waveguide components 50Face, micro-display 10 are set close to incidence surface, and image-forming component 30 is set close to light-emitting surface.
Specifically, above-mentioned micro-display 10 and above-mentioned image-forming component 30 can be located at the homonymy of optical waveguide components 50, such as Fig. 1Shown, micro-display 10 is incidence surface close to a side surface of above-mentioned micro-display 10 and above-mentioned optical waveguide components 50 at this timeFor light-emitting surface；Above-mentioned micro-display 10 and above-mentioned image-forming component 30 can also be located at the opposite both sides of optical waveguide components 50, such as Fig. 2Shown, micro-display 10 is incidence surface close to a side surface of above-mentioned micro-display 10 at this time, and micro-display 10 is close to above-mentioned lightOne side surface of waveguide component 50 is light-emitting surface, and incidence surface and light-emitting surface are oppositely arranged.
It is also, above-mentioned to be coupled into according to the difference for being coupled into 220 type of spatial light modulator 210 and decoupling spatial light modulatorSpatial light modulator 210 and above-mentioned decoupling spatial light modulator 220 can be separately located in the inside or outer of optical waveguide components 50Surface, at this point, the above-mentioned installation position for being coupled into spatial light modulator 210 and above-mentioned decoupling spatial light modulator 220 can have it is moreKind combination, as shown in Fig. 4 to 8.
Specifically, above-mentioned optical waveguide components 50 have opposite the first outer surface and the second outer surface, when micro-display 10It is above-mentioned to be coupled into spatial light modulator 210 and above-mentioned decoupling spatial light when being close to first outer surface setting with image-forming component 30Modulator 220 can be located on the inner surface opposite with first outer surface, as shown in Figure 4；It is above-mentioned to be coupled into spatial light modulator210 and above-mentioned decoupling spatial light modulator 220 can also be located at second outer surface opposite with first outer surface on, such as Fig. 5It is shown；The above-mentioned spatial light modulator 210 and above-mentioned decoupling spatial light modulator 220 of being coupled into can also be located at first outer surfaceOn, as shown in Figure 6；The above-mentioned spatial light modulator 210 that is coupled into may be located on inside optical waveguide components 50, and above-mentioned decoupling is empty at this timeBetween optical modulator 220 can be located at the inner surface opposite with above-mentioned second outer surface on, as shown in Figure 7；It is above-mentioned to be coupled into spatial lightModulator 210 may be located on the first outer surface of optical waveguide components 50, and above-mentioned decoupling spatial light modulator 220 can position at this timeIn the second outer surface with the first outer surface, as shown in Figure 8.
In the above-mentioned nearly eye field display device of the present invention, it is coupled into spatial light modulator 210 and the light modulation of decoupling spaceDevice 220 includes at least one modulation module；In order to effectively adjust the deflection angle of image light, make by above-mentioned space light modulationImage light after the adjustment deflection angle of device 20 is in the different location that human eye 40 can be focused on after image-forming component 30, it is preferable thatAbove-mentioned modulation module includes lens array column modulation module and/or grating array formula is modulated, it is further preferable that above-mentioned decoupling spaceOptical modulator 220 is changeable Bragg grating.
In the above-mentioned nearly eye field display device of the present invention, nearly eye field display device can also include being set to micro- aobviousShow the collimation optics 60 between device 10 and spatial light modulator 20.Collimation optics 60 are used to send out micro-display 10Image light become collimated image, then pass through spatial light modulator 20 adjust the collimated image deflection angle, above-mentioned collimated lightLearn element 60 include and be not limited to lens element, optical grating element etc..
The above-mentioned nearly eye field display device of the present invention can be head-mounted display, and micro-display 10 therein can selectFrom any one of LCD, LED, OLED, LCOS, microLED, microOLED and projection device, but it is not limited to above-mentioned kindClass, those skilled in the art can carry out Rational choice according to the prior art to the type of micro-display 10；Above-mentioned image-forming component30 can be lens, grating etc..
The operation principle of above-mentioned nearly eye field display device can include procedure below：Micro-display 10 is sent out at the first momentThe collimated optical elements 60 of image light I gone out become collimated image light I, collimated image light I through being coupled into 210 coupling of spatial light modulatorClose into optical waveguide components 50 and being propagated in waveguide in a manner of total reflection, after decoupling spatial light modulator 220 is encountered withSome angle 1 exports image light I, and the imaged elements 30 of image light I focus on position of human eye, form viewpoint I；Micro-display 10Image light II is sent out at the second moment, collimated optical element 60 becomes collimated image light II, and collimated image light II is through being coupled into skyBetween optical modulator 210 be coupled into optical waveguide components 50 and propagated in waveguide in a manner of total reflection, the light modulation of decoupling spaceDevice 220 switches with 10 synchronous sequence of micro-display, is exported after image light II encounters decoupling spatial light modulator 220 with 2 angles,The imaged elements 30 of image light II focus on position of human eye, form viewpoint II；Micro-display 10 sends out image light at the third momentIII, collimated optical element 60 become collimated image light III, collimated image light III and are coupled through being coupled into spatial light modulator 210It is propagated in waveguide into optical waveguide components 50 and in a manner of total reflection, decoupling spatial light modulator 220 and micro-display 10Synchronous sequence switches, and is exported after image light III encounters decoupling spatial light modulator 220 with 3 angles, and image light III is imagedElement 30 focuses on position of human eye, forms viewpoint III ..., 220 quick sequential of micro-display 10 and decoupling spatial light modulatorSwitching so that human eye can see these viewpoints simultaneously.These viewpoints are densely arranged at position of human eye, and viewpoint is smaller than peopleEye pupil bore dia so that enter human eye more than more than two viewpoints, so as to generate monocular vision Depth cue, solve vision spokeConcentrate around one point, as spokes on acis adjusts collision problem.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Since above-mentioned spatial light modulator can adjust the deflection angle of described image light, make X-Y scheme at least described in two widthThe described image light of picture has the different directions of propagation, the image light that above-mentioned image-forming component can will be adjusted by spatial light modulatorPosition of human eye is converged to, the imaged element of two dimensional image light after adjustment is assembled to form high density viewpoint at human eye, these are regardedPoint is densely arranged at position of human eye, since above-mentioned viewpoint is smaller than pupil of human diameter, so that more than two or moreViewpoint enters human eye, generates monocular vision Depth cue, efficiently solves vision influx and adjusts collision problem.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiiesChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.