CN106873170A - It is a kind of to improve the system and method that grating style three-dimension display is presented view resolution - Google Patents
It is a kind of to improve the system and method that grating style three-dimension display is presented view resolution Download PDFInfo
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
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Abstract
Improve the system and method that grating style three-dimension display is presented view resolution the present invention relates to a kind of, the system include pel array, grating array, one can each raster unit of timing strobe grating array gating device and a control unit；Grating array is divided into multiple sub-light grid arrays, and each sub-light grid array is made up of two or more raster units；At a time point, gating device gates a raster unit in each sub-light grid array, the light splitting regulation and control of gated raster unit, light beam from pel array forms multiple vision areas, different pixels are found in correspondence vision area respectively, and control unit controls each pixel to refresh the information content of the display respective vision area of correspondence；At each time point, by the different raster unit of gating device circulation each sub-light grid array of gating, control unit controls each pixel synchronous refresh display corresponding informance content.In the case of using same pixel array and identical vision area, compared with traditional raster formula dimension display technologies, view-based access control model retention effect can improve the resolution ratio of each vision area respective view to the present invention.
Description
Technical field
The present invention relates to technical field of three-dimensional image, improve grating style three-dimension and show more particularly, to one kind and be in
The system and method for existing view resolution.
Background technology
Because two dimension display is difficult to the clear depth information for expressing the third dimension exactly, people are being devoted to research always can
Show Display Technique --- the three-dimensional image display technology of stereo scene.Because grating style three-dimension Display Technique is compatible with main flow
Flat-panel monitor, therefore it is always current practical most commonly used 3-D technology.By the light splitting function of grating, traditional light
The light beam of grating dimension display technologies guiding display screen pel array outgoing at equal intervals is respectively directed to different vision areas, regards difference
Area's point can receive the optical information from different pixels array, and the presentation of 3-D view is realized based on binocular parallax.But it is multiple
The presence of vision area, reduces the resolution ratio that single vision area receives view, in order to the view for obtaining higher resolution is presented, so that
More preferable 3D vision experience is obtained, traditional raster formula three-dimensional display system needs high, even ultrahigh resolution display screen.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided one kind improves grating style three-dimension display and view is presented
The system of resolution ratio, traditional grating style three-dimension Display Technique is introduced by by time-multiplexed, is shown using equal resolution
In the case of screen and presentation same number viewpoint, view-based access control model retention effect can improve the resolution ratio that each viewpoint receives view.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of system for improving grating style three-dimension display presentation view resolution is provided, including：
One pel array, for loaded and displayed optical information；
One grating array, with light splitting function, the grating array is arranged at pixel along pel array outgoing optical transmission direction
Before array, for the pel array outgoing beam to be guided to some regions in order, the grating array is by some sub-gratings
Array is constituted, and each sub-light grid array includes two or more adjacent gratings units；
One gating device, with timing strobe function, for the different raster units in each sub-light grid array of timing strobe；
One control unit, electrically connects with pel array and gating device, at a time point, control unit control gating device
A raster unit in each sub-light grid array is gated, and controls the pel array to refresh display corresponding information.
In such scheme, one in a time point, gating device gating each sub-light grid array of grating array
Raster unit, the light splitting regulation and control of the gated raster unit of the light beam from pel array, is found in multiple vision areas, together respectively
When, control unit control pel array refreshes the information content of the display respective vision area of correspondence；In adjacent time point, each sub-light grating array
The different raster units of row circulate gating successively, and pel array synchronous refresh display corresponding information content, view-based access control model is detained effect
Should, improve the resolution ratio that each vision area receives view.
Preferably, the system also include the plate array that is in the light, it is described be in the light plate array for keep off remove each sub-light grating array
Row respective pixel outgoing beam is beyond the part of book grating array dimension scope.
Preferably, the system also includes an adjustment unit, and the adjustment unit is placed in pel array and grating array
Between, for adjusting the light path between pel array and grating array.It is further preferred that the adjustment unit by displacement,
The mode such as mechanically deform or refraction index changing adjusts the light path between pel array and grating array.
Preferably, grating array is the cylindrical lens array of one dimensional arrangement or focal length, the adjacent pillars lens spacing of one dimensional arrangement
Controllable cylindrical lens array.As another alternative solution, grating array for one dimensional arrangement slit array or one dimensional arrangement it is narrow
Seam clear aperature size, the aperture diaphragm array of adjacent slots spacing-controllable.
Preferably, grating array is the lens array of two-dimensional arrangements or the focal length of lens, the distribution spacing-controllable of two-dimensional arrangements
Lens array.
The method that grating style three-dimension display is presented view resolution, bag are improved it is a further object to provide a kind of
Include following steps：
S1. one-dimensional grating array is divided intoMIndividual sub- grating array, each sub-light grid array is includedL（L≧2）Individual adjacent gratings unit；
S2. at time pointt Ul （t Ul =t+U*L*Δt+（l-1）*Δt, whereinU=0,1,2,3 ...,l=1,2 ...,L）, gating
Device is gated in equidistant modeMEach raster unit of individual sub- grating array, makes its aperture or part aperture be in thang-kng
State, while making other raster units be in non-through light state；
S3. long to direction along each gating raster unit, multiple pixel groups of selection cycle arrangement are used as the gating raster unit pair
The array of sub-pixels answered, each array of sub-pixels is by the spacing in raster unit orientationp'sNIndividual adjacent pixel composition, its
In each array of sub-pixels respective pixel locus exceed pel array scope when, the pixel is vacant；
S4. it is any to gate raster unitG ml （SubscriptmIt is sub-light grid array sequence number,m=1,2 ...,M）Corresponding sub-pixel array
Each pixel is through the raster unitG ml , in raster unit orientation, area of space is found in respectivelyS ml1 ,S ml2 ...,S mlN , its
Middle area of spaceS 1l1 ,S 2l1 ...,S Ml1 Overlapping region be named as regionS l1 , area of spaceS 1l2 ,S 2l2 ...,S Ml2 Overlay region
Domain is named as regionS l2 , similarly name regionS l3 ...,S lN ；
S5. regionS ln （n=1,2 ...,N）Take a littleV ln , set pointV ln To be found in area of space respectivelyS 1ln ,S 2ln ...,S Mln
The corresponding viewpoint of pixel；
S6. each pixel of control unit control pel array loads optical information of the 3-D view to be shown on respective correspondence viewpoint；
S7. existl=1,2 ...,LEach time point, gate each sub-gratings unit by step S2-S6 successivelyLIndividual raster unit, and
Synchronous loading relevant information；
S8. existU=0, when 1,2,3 ..., circulating repetition step S7.
Another alternative that grating style three-dimension display is presented the method for view resolution is improved as the present invention is a kind of,
Comprise the following steps：
SS1. pel array and grating array are tieed up to arrangement along two, adjacentL（L≧2）Individual raster unit constitutes a sub-light
Grid array, grating array is divided into multiple sub-light grid arrays；
SS2. each light barrier of plate array of being in the light is inserted between adjacent sub-light grid array, along one tie up to or two tie up to gear except each
Sub-light grid array respective pixel outgoing beam is beyond the part of the sub-gratings array dimension scope；
SS3. at time pointt Ul （t Ul =t+U*L*Δt+（l-1）*Δt, whereinl=1,2 ...,L,U=0,1,2,3 ...）, gating
Device gates a raster unit of each sub-light grid array in equidistant mode, its aperture or part aperture is in thang-kng shape
State, while making other raster units be in non-through light state, each gating raster unit corresponds to be made up of adjacent multiple pixels respectively
Array of sub-pixels；
SS4. dummy 3-D view to be shown, its through each gating raster unit, in each gating raster unit corresponding sub-pixel array
The projection information of upper formation, as the array of sub-pixels at time pointt Ul Load information, each sub-pixel is controlled by control unit
Array refresh is loaded；
SS5. existl=1,2 ...,LEach time point, successively by each sub-light grid array in step SS3-SS4 gating grating arrayL
Individual raster unit, and synchronously load relevant information；
SS6. existU=0, when 1,2,3 ..., circulating repetition step SS5.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is incorporated into traditional raster pattern by time-multiplexed
In Three-dimensional Display or integration imaging technology, by control unit to the timing strobe of raster unit, the resolution that view is presented is improved
Rate, overcomes the low resolution problem of traditional multi views technology or integration imaging；For traditional raster formula dimension display technologies,
The quantity that viewpoint is presented, optimization fortune can be improved in the case where ensureing that view resolution is presented, by specific parameter designing
The presentation effect of dynamic parallax, or even when adjacent viewpoint spacing is set smaller than pupil size, super Multi-view display is realized, overcome
The visual discomfort that traditional raster formula dimension display technologies influx-focusing conflict brings, is presented natural 3D visual effect.
Brief description of the drawings
Fig. 1 is to improve raster pattern three as a kind of of grating array using cylindrical lens array in the first embodiment of the invention
Dimension display is presented the light channel structure schematic diagram of the system of view resolution.
Fig. 2 is array of sub-pixels edge in the case of the first embodiment of the invention uses cylindrical lens array as grating array
The arrangement architecture schematic diagram of sub-pixel during the post lens pixel to only one of which long.
Fig. 3 is array of sub-pixels edge in the case of the first embodiment of the invention uses cylindrical lens array as grating array
The arrangement architecture schematic diagram of post lens are long when including multiple pixel to direction sub-pixel.
Fig. 4 is pixel arrangement direction in the case of the first embodiment of the invention uses cylindrical lens array as grating array
The arrangement architecture schematic diagram of sub-pixel when being inclined with grating alignment direction.
Fig. 5 is to improve raster pattern as a kind of of grating array using slit grating array in the first embodiment of the invention
Three-dimensional Display is presented the light channel structure schematic diagram of the system of view resolution.
Fig. 6 be in second embodiment of the invention using lens array as grating array in the case of, raster unit and picture
Position relationship schematic diagram between element.
Fig. 7 is that second embodiment of the invention is shown using lens array as a kind of grating style three-dimension that improves of grating array
Show the light channel structure schematic diagram of the system that view resolution is presented.
Specific embodiment
Accompanying drawing being for illustration only property explanation, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by accompanying drawing.The present invention is improved by time-multiplexed introducing
Dimension display technologies based on grating array are presented the resolution ratio of view, are experienced with obtaining more preferable 3D vision.
Embodiment 1
Using cylindrical lens array as grating array 10, a kind of grating style three-dimension that improves of the present invention shows presentation view resolution
The light channel structure schematic diagram of system is as shown in Figure 1.In Fig. 1 and following part each light channel structure figure, in order to simple clear, all
Simply depict the part of grating array 20 and pel array 10.Along grating array 20 post lens arrangement direction (xTo), pixel
With minimum spacingpArrangement, post lens are with spacingbArrangement.H i Deng the row where expression pixel,V i Deng expression pixel column.Each post
Optical center of lens（The point of the direction ground outgoing post lens is not changed in post lens cross-section through the light）The residing plane of reference and picture
The distance in the place pel array face of pixel array 10 isD b , sightingpiston is with the distance in pel array faceD e .Gating device 30 is close to light
Grid array 20 is placed.Fig. 2 shows a kind of spatial relation of grating array 20 and pel array 10, i.e. grating array 20
Grating isyTo post lens edgexTo arrangement, the pixel edge of pel array 10xXiang HeyTo two-dimensional arrangements.Here with adjacentL=2 light
Grid unit is illustrated as a example by constituting a sub- grating array, i.e. post lensG i1 WithG i2 Composition sub-light grid arrayG i , post lensG j1
WithG j2 Composition sub-light grid arrayG j , the like, altogetherMIndividual sub- grating array.EdgeyTo, for a raster unit post lens,
The pixel arrangement cycle is pel spacing in this direction, and array of sub-pixels takes a pixel in this direction；EdgexTo with sub- picture
Pixel array is illustrated as a example by including four adjacent pixels, namely is contained with an array of sub-pixelsN=1*Enter as a example by 4 pixels
Row explanation.
Integer is setUWithl, wherein integerUSpan be 0,1,2 ..., integerlSpan be 1,2 ...,L。
U=0 Hel=1t+U*L*Δt+（l-1）*Δt =tMoment, the gating device 30 placed against grating array 20 is gated simultaneously
Sub-light grid arrayG i Post lensG i1 , sub-light grid arrayG j Post lensG j1 、….These gating, adhere to different sub-light grating arrays separately
RowMIndividual post lens, edgexIt is to spacingL*b=2b.EdgexTo sub-pixel corresponding to the gating post lens of adjacent sub-light grid array
Array, without pixel overlappingly contiguous arrangement.Specific to Fig. 2, pixelP ii , P ij ,P ik ,P il Composition is relative to gating post lensGi1
An array of sub-pixels, pixelP im , P in ,P io ,P ip Composition is relative to gating post lensG j1 An array of sub-pixels, according to
It is secondary to analogize determinationxTo the corresponding array of sub-pixels of each gating post lens.For the post lens of any gating, edgeyIt is multigroup to correspondence
Array of sub-pixels.Specific to Fig. 2, post lens are gatedGi1EdgeyTo have corresponding array of sub-pixels ...,PA ii1 、PA ji1 、PA ki1 、….Herein, the row where first subscript represents the array of sub-pixels, afterwards two subscripts represent the array of sub-pixels institute
The sequence number of correspondence gating post lens.Each parameter meets following geometrical relationship in design drawing 2：
D b =(p*D e )/(e+p),(L*b)/(N*p)=(D e -D b )/D e (1)。
With array of sub-pixelsPA ii1 Place behavior example, pixelP ii 、P ij 、P ik 、P il 、P im 、P in 、P io 、P ip 、P iq 、P ir ... it is right
Answer the pixel in Fig. 1P l+1、P l+2、P l+3、P l+4、P l+5、P l+6、P l+7、P l+8、P l+9、…；Raster unitG i1 、G i2 、G j1 、G j2 ... the post lens in difference corresponding diagram 1k, k+1,k+2,k+3, ….According to formula (1) geometrical relationship, this line space
ForN*p=4pEach pixel center emergent ray through each correspondence gating post lens photocentre, point to sightingpiston on same point.
With regard to Fig. 2 specifically, pixel ...,P ii 、P im 、P iq ... center outgoing, excessively correspond to gating post optical center of lens convergence of rays inV cp1
Point, i.e. edgexBe found in simultaneously to them withV cp1A public domain centered on point, it is region to name the public domainS 11, take
One, region point is viewpointV 11, the control of control unit 40 pixel ...,P ii 、P im 、P iq ... loading 3-D view to be shown on
The viewpointV 11Optical information；Pixel ...,P ij 、P in 、P ir ... center outgoing, excessively correspond to gating post optical center of lens convergence of rays inV cp2Point, i.e. edgexTo they be found inV cp2A public domain centered on point, it is region to name the public domainS 12, take
One, region point is viewpointV 12, the control of control unit 40 pixel ...,P ij 、P in 、P ir ... loading 3-D view to be shown on
The viewpointV 12Optical information；Pixel ...,P ik 、P io ... center outgoing, excessively correspond to gating post optical center of lens convergence of rays inV cp3
Point, i.e. edgexTo they be found inV cp3A public domain centered on point, it is region to name the public domainS 13, Qu Gai areas
One, domain point is viewpointV 13, the control of control unit 40 pixel ...,P ik 、P io ... loading 3-D view to be shown is on the viewpointV 13
Optical information；Pixel ...,P il 、P ip ... center outgoing, excessively correspond to gating post optical center of lens convergence of rays inV cp4Point, i.e. edgex
To they be found inV cp4A public domain centered on point, it is region to name the public domainS 14, take one, region point
It is viewpointV 14, the control of control unit 40 pixel ...,P il 、P ip ... loading 3-D view to be shown is on the viewpointV 14Light letter
Breath.EdgeyTo each row pixel equally carries out display information loading by above-mentioned principle.Due to post lens edgeyWithout Spatial transmission function,
Do not go together corresponding viewpoint, in above process edgeyTo coincidence can be taken.EdgexTo different subpixel array is correspondingN=4
Viewpoint, spatially may be configured as overlapping.ThentMoment existsN=Region near 4 viewpoints, will respectively observe graphics to be shown
The respective view of picture, each view edgexTo resolution ratio be reduced to the 1/ of the resolution ratio of pel array 10L=1/4, edgeyTo resolution ratio
Reduction remains the resolution ratio of pel array 10.The selection of each viewpoint, edgexTo, to be close to the center in each corresponding region, or
The center for just choosing each corresponding region is excellent；Along y to viewpoint position can be come binocular in-scope according to the observation
It is determined that.
U=0 Hel=2t+U*L*Δt+（l-1）*Δt=t+ΔtMoment, gating device 30 gates sub-light grating array simultaneously
RowG i Post lensG i2 , sub-light grid arrayG j Post lensG j2 、….Similar totThe situation at moment, withN=4xTo adjacent pixel
Composition array of sub-pixels.But relative tol=1 moment scene, edgexTo the pixel of each array of sub-pixels generally there occursN/L=2
The skew of individual minimum pixel spacing.Specific to Fig. 2, pixelP ik , P il ,P im ,P in Composition is relative to post lensG i2 A sub- picture
Pixel array, pixelP io , P ip ,P iq ,P ir Composition is relative to gating post lensG j2 An array of sub-pixels, the like determinationx
To the corresponding array of sub-pixels of each gating post lens.Equally, edgeyTo each gating post lens multigroup array of sub-pixels of correspondence.Full
On the premise of geometrical relationship required by sufficient formula (1), with principle described in epimere, thent+ΔtMoment, edgexXiangV cp1 、V cp2 、V cp3、V cp4 The region of point annex, will respectively observe the respective view of 3-D view to be shown, each view edgexTo resolution ratio
Also it is reduced to the 1/ of the resolution ratio of pel array 10L=1/4, edgeyTo resolution ratio reduction remain the resolution ratio of pel array 10.
Butl=1Moment andl=2The view that moment is presented, its corresponding pixel edgexTo being spatial offset.U=0In the case of it is different
At the moment, similarly process, untill=LMoment.Then take successivelyU=1,2 ...,UWhen taking each centrifugal pump, recycling is repeatedU=0When
Corresponding said process.
WhenΔtIt is small to vision retention effect work when, what each viewpoint annex sequential was receivedLIndividual view, will synthesize
One width resolution ratio improvesL- 1 times of view.
Said process be withL=2,NExplained as a example by=4.On the premise of formula (1) is met,NWithLIt can be taken
It is worth.If working asN/LValue when being not integer, two neighboring moment, the same two neighboring raster unit of sub-light grid array is corresponding
Array of sub-pixels edgexTo spatial offset, take closestN/LInteger value minimum pixel spacing be the spatial offset value.When
When the refreshing frequency of pel array 10 is sufficiently high, the quantity of raster unit contained by sub-light grid array is improvedL, can further improve
Show the resolution ratio of view.
In the above-described example, pixel arrangement edge in pel array 10yIt is distributed to by the minimum period of pixel.In addition
A kind of alternative construction isyTo pixel be withgIndividual pixel is minimum period distribution, and now each sub-light grid array is includedN=g*hIt is individual
Pixel,hForxTo number of pixels.Fig. 3 withg=2,hIllustrated as a example by=4.U=0Withl=1t+U*L*Δt+（l-1）*Δt= tMoment, pixelP ij , P il ,P in ,P ip ,P ji ,P jk ,P jm ,P jo Composition one is relative to gating post lensG i1 Array of sub-pixels.
EdgexTo adjacent sub-pixel structure by pixelP ir ,P it ,P iv ,P ix ,P jq ,P js ,P ju ,P jw Composition, the rest may be inferred.EdgeyTo the cycle
Corresponding each the gating post lens of multiple array of sub-pixels of arrangement.In each array of sub-pixels, edgexThe adjacent pixel in direction existsy
Diverse location is in upwards, in Fig. 3P ji WithP ij , its edgexTo spacingpIt is pel spacing minimum in this direction.System
Each parameter meets above-mentioned formula (1).lTake the moment of consecutive value, the adjacent gratings list gated successively in same sub-light grid array
Array of sub-pixels edge corresponding to unitxTo also by overall generationN/LThe skew of individual minimum pixel spacing.WithU=0Withl=2 moment
As a example by, now post lensG i2 Gating, an array of sub-pixels corresponding to it is by pixel as shown in Figure 3P in ,P ip ,P ir ,P it ,P jm ,P jo ,P jq ,P js Composition.Relative toU=0Withl=1 moment gated post lensG i1 Corresponding one is by pixelP ij ,P il ,P in ,P ip ,P ji ,P jk ,P jm ,P jo The array of sub-pixels of composition, edgexTo there occursN/L=4 skews of minimum pixel spacing.If working asN/L
Value when being not integer, two neighboring moment, the corresponding array of sub-pixels edge of the same two neighboring raster unit of sub-light grid arrayx
To spatial offset, take closestN/LInteger value minimum pixel spacing be the spatial offset value.When the brush of pel array 10
When newly frequency is sufficiently high, the quantity of raster unit contained by sub-light grid array is improvedL, can further improve the resolution of display view
Rate.
In examples detailed above, pel array 10 is consistent with the orientation of grating array 20.It is mutual that Fig. 4 show the two
The pixel edge of inclined situation, wherein pel array 10x' toy' to two-dimensional arrangements, grating array 20yTo post lens unit
EdgexTo arrangement.p x ' andp y ' it is respectively edgex' toy' to pel spacing,bForxTo the spacing of post lens unit.y' andy's
Angle isθ=arctan(p x '/( g*p y ')), whereingIt is positive integer.Under the situation, each array of sub-pixels is includedN=g*hIt is individual
Pixel, whereinhForx' to number of pixels,gFory' to number of pixels.Fig. 4 be withh=3,gIllustrated as a example by=3.U=0Withl=
1t+U*L*Δt+（l-1）*Δt=tMoment, pixelP ni ,P nj ,P nk ,P mi ,P mj ,P mk ,P li ,P lj ,P lk Composition one relative to
Gating post lensG i1 Array of sub-pixels.EdgexTo adjacent sub-pixel structure by pixelP ml ,P mm ,P mn ,P ll ,P lm ,P ln ,P kl ,P km ,P kn Composition, the rest may be inferred.EdgeyTo corresponding each gating post lens of multiple array of sub-pixels of periodic arrangement.Each sub- picture
In pixel array, edgexThe adjacent pixel in direction existsy' diverse location is in upwards, in Fig. 4P ni WithP mi , its edgexTo spacingp=p y '*sin(θ) it is pel spacing minimum in this direction.System parameters are required to meet above-mentioned formula (1).lTake adjacent
The moment of value, the array of sub-pixels edge corresponding to adjacent gratings unit gated successively in same sub-light grid arrayxTo overall inclined
Moved'/L, whereind' bexTo adjacent subpixels array pitch.WithU=0Withl=As a example by 2 moment, now lensG i2 Gating, its institute
A corresponding array of sub-pixels is by pixel as shown in Figure 4P lj ,P lk ,P ll ,P kj ,P kk ,P kl ,P jj ,P jk ,P jl Composition.Relative toU=0Withl=1 moment gated post lensG i1 Corresponding one is by pixelP ni ,P nj ,P nk ,P mi ,P mj ,P mk ,P li ,P lj ,P lk Composition
Array of sub-pixels, edgexTo there occursd'/L=5pSkew.Wheny' andyAngleθExpression formulaatan(p x '/(g'*p y ')) ing' for non-integer when, it is also possible to take each array of sub-pixels edgey' to comprising positive numbergIndividual pixel, edgex' to comprisinghIndividual pixel.But this
In the case of kind, each gating raster unit is correspondingyTo array of sub-pixels,xMisplaced to existing.It is reacted in Fig. 1, in regulationx
In the case of Xiang Weihang, edgeyTo the corresponding convergent point of the pixel do not gone togetherV cpk (k=1, 2, …, N) existxTo dislocation.If
Whend'/LValue be not minimum pixel spacingpIntegral multiple when, two neighboring moment, the same two neighboring grating of sub-light grid array
The corresponding array of sub-pixels edge of unitxTo spatial offset, take closestd'/LInteger value minimum pixel spacing be the sky
Between misplace value.When the refreshing frequency of pel array 10 is sufficiently high, the quantity of raster unit contained by sub-light grid array is improvedL,
The resolution ratio of display view can further be improved.
In examples detailed above, when each raster unit is gated, gating space segment can be the whole of correspondence raster unit
Aperture, or the part in correspondence raster unit aperture.
In examples detailed above, the post lens as raster unit can be replaced with slit, such as Fig. 5.Slit grating is placed in Fig. 1 institutes
Show on the plane of reference, the photocentre of each post lens is set to each slit in Figure 5 in Fig. 1xTo central point.Each aperture edge of aperture gratingxTo aperture sizeaNo more than adjacent apertures spacingb.Other parameters, principle are similarly in Fig. 1 situations.In the case, gate
Device 30 can from any of grating array 20 while be attached to grating array 20, and grating array 20 and gating device 30 work(
Can be by a device, such as controllable liquid crystal light valve array is realized.Similarly in the sub-pixel shown in Fig. 2, Fig. 3 and Fig. 4
Array structure can be used on Fig. 1, and they can also be used on Fig. 5.
In the example of above-mentioned use Lenticular screen, grating array 20 can be the post lens array of the spacing-controllable of one dimensional arrangement
Row, such as liquid crystal cylindrical lens array, so as to regulation parameterb。
In the example of above-mentioned use slit grating, grating array 20 can be one dimensional arrangement, clear aperature and grating space
Controllable slit array, so as to regulation parameteraWithb。
In the example of above-mentioned use Lenticular screen, post lens unit along z to thickness, it is also possible to diminish, pel array
There is space between 10 and grating array 20.In this case, gating device 30 can also be placed in pel array 10 and light grating array
Between row 20, and placed near grating array 20, carry out the aperture gating of raster unit.
In examples detailed above, adjustment unit 60 can be put between pel array 10 and grating array 20, such as Fig. 5, the regulation
Unit 60 can adjust the distance between pel array 10 and grating array 20 by modes such as displacement, mechanically deforms, that is, adjust
ParameterD b 。
In the example of above-mentioned use Lenticular screen, along the Spatial transmission direction of post lens, post lens unit focal length sets
Putting can image in sightingpiston by pixel, and according to the variable Lenticular screen of the post focal length of lens, such as liquid crystal Lenticular screen can
To adjust the position of pixel picture.
In the example of above-mentioned use Lenticular screen, along the Spatial transmission direction of post lens, post lens unit focal length sets
Putting can make pixel be exactly on the focal plane of post lens, according to the variable Lenticular screen of the post focal length of lens, such as liquid crystal
Lenticular screen, this needs adjustment unit 60, and pixel battle array is adjusted by modes such as variations in refractive index regulation, displacement, mechanically deforms
Light path between row 10 and grating array 20, to keep pixel to be on post lens focal plane.
In examples detailed above, illustrated by taking the plane distribution of pixel as an example.On the basis of a plane, pixel can also divide
Cloth is set as valid pixel using projection of the pixel on the datum plane on the curved surface near the plane by examples detailed above
Meter.In the case, if equivalent pixel spacing non-equivalent, along raster unit orientation, with the average value of equivalent pixel spacing
It is designed.
Embodiment 2
Using lens array as grating array 20, what a kind of raising grating style three-dimension display of the present invention was presented view resolution is
In system, raster unit and pixel mutual alignment relation are as shown in Figure 6.For simple clear, each figure of Fig. 6 and later correlation, only draw
The part of grating array 20 and pel array 10 is gone out.Raster unit and the equal edge of pixelxXiang HeyTo arrangement.Along the two directionsp x 、p y It is pel spacing,b x 、b y It is raster unit spacing.The following Uniform provisions of the present embodimentxXiang Weihang,yXiang Weilie.H i Deng table
Row where showing pixel,V i Deng expression pixel column.Fig. 6 withxTo it is two neighboring,yTo a lens, altogetherL=2 grating lists
Illustrated as a example by unit's one sub- grating array of composition.Specifically, lensG jj1 WithG jj2 Composition sub-light grid arrayG jj , lensG jn1
WithG jn2 Composition sub-light grid arrayG nj , the like, altogetherMIndividual sub- grating array is distributed by row, column.The sub-light grid array of adjacent lines
Between, insert the light barrier of the plate array 50 that is in the light, edgeyTo gear exceeds this sub-light except each sub-light grid array respective pixel outgoing beam
The part of grid array dimension scope.Fig. 6 is with edgeyIllustrated as a example by corresponding to two pixels to a sub- grating array.Gate
Part 30 is close to grating array 20 and is placed.
Integer is setUWithl, wherein integerUSpan be 0,1,2 ..., integerlSpan be 1,2 ...,L。
U=0 Hel=1t+U*L*Δt+（l-1）*Δt=tMoment, the gating device 30 placed against grating array 20 is gated simultaneously
Sub-light grid arrayG jj LensG jj1 , sub-light grid arrayG jn LensG jn1 、….Each its correspondence of gating grating Unit selection is in the light
Between plate, edgexTo multiple adjacent pixels constitute the corresponding array of sub-pixels of gating raster unit, adjacent sub-light grid array is same
Array of sub-pixels corresponding to the raster unit of Shi Xuantong, without pixel overlappingly contiguous arrangement.Specific to Fig. 6, pixelP ji ,P ki ,P jj ,P kj ,P jk ,P kk ,P jl ,P kl Composition is relative to gating gratingG jj1 Sub-gratings unit,P jm ,P km ,P jn ,P kn ,P jo ,P ko ,P jp ,P kp Composition is relative to gating gratingG jn1 Sub-gratings unit, the like.EdgexTo each array of sub-pixels is corresponding relative to its
Gating raster unit, with identical relative space position relation.EdgeyTo, periodic sub-light grid array and corresponding sub- picture
Pixel array period profile.The gating raster unit of colleague, it is desirable to equidistantly arrangement.Below withG jj Place behavior example explanation, the mistake
Journey is applied to all rows.Such as Fig. 7, dummy three-dimensional body to be shown, its gated gratingG jj1 Modulation,G jj1 Corresponding sub-pixel battle array
Column-generation corresponding information, the information conducttPixel in the moment array of sub-pixelsP ji ,P ki ,P jj ,P kj ,P jk ,P kk ,P jl ,P kl Will
Load information, control unit 40 controls them synchronously to load；Dummy three-dimensional body to be shown, its gated gratingG jn1 Modulation,
Gjn1Each pixel generation corresponding information of corresponding sub-pixel array, the information conducttMoment the array of sub-pixels pixelP jm ,P km ,P jn ,P kn ,P jo ,P ko ,P jp ,P kp Load information is wanted, control unit 40 controls them synchronously to load；Based on same method, each son
Pel array existstMoment carries out corresponding informance loading simultaneously.
U=0 Hel=2t+U*L*Δt+（l-1）*Δt=t+ΔtMoment, while gating sub-light grid arrayG jj LensG jj2 , sub-light grid arrayG jn LensG jn2 、….Dummy three-dimensional body to be shown is gatedG jj2 Modulation,G jj2 Corresponding sub-pixel
Array generates corresponding information, the information conductt+ΔtMoment each pixel of the array of sub-pixels wants load information, and control unit 40 is controlled
Them are made synchronously to load；Dummy three-dimensional body to be shown, its gated gratingG jn2 Modulation,G jn2 Corresponding sub-pixel array is given birth to
Into corresponding information, the information conductt+ΔtMoment, the array of sub-pixels pixel wanted load information, and control unit 40 controls them
Synchronous loading；Based on same method, each array of sub-pixels existst+ΔtMoment carries out corresponding informance loading simultaneously.
Gate each raster unit of each sub-light grid array successively by above-mentioned principle, untilt+（L-1）*ΔtMoment.
U=When 0,1,2 ..., repeat respectively above-mentionedl=1,2 ...,LWhen process.
WhenΔtIt is small to vision retention effect work when, realize based on integration imaging technology Three-dimensional Display.
In the above-described embodiments, light barrier is tieed up to insertion along one.Can also be by light barrier edgexToyTo simultaneously slotting
Enter, the raster unit of anyon grating array and its corresponding pixel are independent of each other, each sub-light grid array correspondence and oneself two dimension
The pixel of distribution in size equivalency range, with Fig. 6 neutron grating arrayG jj As a example by, in the present case, its respective pixel isP jj ,P kj ,P jk ,P kk ,P jl ,P kl ,P jm ,P km , these pixels are used as sub-gratings rowG jj The corresponding sub-pixel of contained all raster units
Array.The corresponding array of sub-pixels of other each raster units similarly determines.Similarly examples detailed above, not in the same time, each sub-gratings
Each raster unit of array is gated successively, and each pixel of corresponding sub-pixel array synchronously loads corresponding informance, and view-based access control model is detained, real
Existing integration imaging is three-dimensional to be presented.
Examples detailed above be withyTo what is illustrated as a example by each sub-light grid array only one of which raster unit, in pel array
In the case that 10 refreshing frequencys are allowed, each sub-light grid array edgeyCan be for 2 or multiple to the raster unit for containing, edgexXiang Han
Some raster units can also be two or more.
In the example of above-mentioned use lenticulation, the sub-light grid array of grating array 20 can be the lens of spacing-controllable, such as
Liquid crystal lens array, to adjust raster unit spacing.
In the example of above-mentioned use lenticulation, the sub-light grid array of grating array 20 can be the lens of focus adjustable, such as
Liquid crystal lens light is arranged, to adjust imaging size and image quality of the light three-dimensional body to be shown on pel array 10.
In examples detailed above, adjustment unit 60, the adjustment unit 60 can be put between pel array 10 and grating array 20
Can by the modes such as displacement, variations in refractive index regulation, mechanically deform adjust between pel array 10 and grating array 20 away from
From to adjust imaging size and image quality of the three-dimensional body to be shown on pel array 10.
In examples detailed above, illustrated by taking the pel array 10 and grating array 20 of planar alignment as an example.If pel array
10 and grating array 20 be curved surface arrangement, examples detailed above can similarly be implemented.
Claims (8)
1. it is a kind of to improve the system that grating style three-dimension display is presented view resolution, it is characterised in that including：
One pel array（10）, for loaded and displayed optical information；
One grating array（20）, with light splitting function, the grating array（20）Along pel array（10）Outgoing optical transport side
To being arranged at pel array（10）Before, for by the pel array（10）Guiding is described to some regions in order for outgoing beam
Grating array（20）It is made up of some sub-gratings arrays, each sub-light grid array includes two or more adjacent gratings units；
One gating device（30）, with timing strobe function, for the different grating lists in each sub-light grid array of timing strobe
Unit；
One control unit（40）, with pel array（10）And gating device（30）Electrical connection, at a time point, control unit
（40）Control gating device（30）A raster unit in each sub-light grid array is gated, and controls the pel array（10）Brush
New display corresponding information.
2. a kind of grating style three-dimension that improves according to claim 1 shows the system that view resolution is presented, and its feature exists
In the system also includes the plate array that is in the light（50）, the plate array that is in the light（50）Each sub-light grid array pair is removed for keeping off
Pixel outgoing beam is answered beyond the part of book grating array dimension scope.
3. a kind of grating style three-dimension that improves according to claim 1 shows the system that view resolution is presented, and its feature exists
In the system also includes an adjustment unit（60）, the adjustment unit（60）It is placed in pel array（10）And grating array
（20）Between, for adjusting pel array（10）And grating array（20）Between light path.
4. a kind of grating style three-dimension that improves according to claim 1 shows the system that view resolution is presented, and its feature exists
In grating array（20）It is the cylindrical lens array or the focal length of one dimensional arrangement of one dimensional arrangement, the post of adjacent pillars lens spacing-controllable
Lens array.
5. a kind of grating style three-dimension that improves according to claim 1 shows the system that view resolution is presented, and its feature exists
In grating array（20）It is the slit array or slit clear aperature size, the adjacent slots spacing of one dimensional arrangement of one dimensional arrangement
Controllable aperture diaphragm array.
6. a kind of grating style three-dimension that improves according to claim 1 shows the system that view resolution is presented, and its feature exists
In grating array（20）For two-dimensional arrangements lens array or two-dimensional arrangements the focal length of lens, distribution spacing-controllable lens array
Row.
7. it is a kind of to improve the method that grating style three-dimension display is presented view resolution, it is characterised in that to comprise the following steps：
S1. one-dimensional grating array（20）It is divided intoMIndividual sub- grating array, each sub-light grid array is includedL（L≧2）Individual adjacent gratings list
Unit；
S2. at time pointt Ul （t Ul =t+U*L*Δt+（l-1）*Δt, whereinU=0,1,2,3 ...,l=1,2 ...,L）, gate
Part（30）Gated in equidistant modeMEach raster unit of individual sub- grating array, is in its aperture or part aperture logical
Light state, while making other raster units be in non-through light state；
S3. long to direction along each gating raster unit, multiple pixel groups of selection cycle arrangement are used as the gating raster unit pair
The array of sub-pixels answered, each array of sub-pixels is by the spacing in raster unit orientationp'sNIndividual adjacent pixel composition, its
In each array of sub-pixels respective pixel locus exceed pel array（10）During scope, the pixel is vacant；
S4. it is any to gate raster unitG ml （SubscriptmIt is sub-light grid array sequence number,m=1,2 ...,M）Corresponding sub-pixel array it is each
Pixel is through the raster unitG ml , in raster unit orientation, area of space is found in respectivelyS ml1 ,S ml2 ...,S mlN , wherein
Area of spaceS 1l1 ,S 2l1 ...,S Ml1 Overlapping region be named as regionS l1 , area of spaceS 1l2 ,S 2l2 ...,S Ml2 Overlapping region
It is named as regionS l2 , similarly name regionS l3 ...,S lN ；
S5. regionS ln （n=1,2 ...,N）Take a littleV ln , set pointV ln To be found in area of space respectivelyS 1ln ,S 2ln ...,S Mln 's
The corresponding viewpoint of pixel；
S6. control unit（40）Control pel array（10）Each pixel loads 3-D view to be shown on respective correspondence viewpoint
Optical information；
S7. existl=1,2 ...,LEach time point, gate each sub-gratings unit by step S2-S6 successivelyLIndividual raster unit, and
Synchronous loading corresponding information；
S8. existU=0, when 1,2,3 ..., circulating repetition step S7.
8. it is a kind of to improve the method that grating style three-dimension display is presented view resolution, it is characterised in that to comprise the following steps：
SS1. pel array（10）And grating array（20）Tieed up to arrangement along two, it is adjacentL（L≧2）Individual raster unit composition
One sub- grating array, grating array（20）It is divided into multiple sub-light grid arrays；
SS2. be in the light plate array（50）Each light barrier insert between adjacent sub-light grid array, along one tie up to or two tie up to gear
Except each sub-light grid array respective pixel outgoing beam is beyond the part of the sub-gratings array dimension scope；
SS3. at time pointt Ul （t Ul =t+U*L*Δt+（l-1）*Δt, whereinl=1,2 ...,L,U=0,1,2,3 ...）, gate
Part（30）A raster unit of each sub-light grid array is gated in equidistant mode, its aperture or part aperture is in thang-kng shape
State, while making other raster units be in non-through light state, each gating raster unit corresponds to be made up of adjacent multiple pixels respectively
Array of sub-pixels；
SS4. dummy 3-D view to be shown, its through each gating raster unit, in each gating raster unit corresponding sub-pixel array
The projection information of upper formation, as the array of sub-pixels at time pointt Ul Load information, by control unit（40）Control each son
Pel array refreshes loading；
SS5. existl=1,2 ...,LEach time point, successively by step SS3-SS4 gate grating array（20）In each sub-light grating array
RowLIndividual raster unit, and synchronously load relevant information；
SS6. existU=0, when 1,2,3 ..., circulating repetition step SS5.
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| WO2018121642A1 (en) | 2018-07-05 |
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