CN101702057B - Free three-dimensional display with condensing cylindrical grating - Google Patents
Free three-dimensional display with condensing cylindrical grating Download PDFInfo
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- CN101702057B CN101702057B CN2009102161647A CN200910216164A CN101702057B CN 101702057 B CN101702057 B CN 101702057B CN 2009102161647 A CN2009102161647 A CN 2009102161647A CN 200910216164 A CN200910216164 A CN 200910216164A CN 101702057 B CN101702057 B CN 101702057B
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- cylindrical grating
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- condensing cylindrical
- beam split
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Abstract
The invention provides a free three-dimensional display with a condensing cylindrical grating, mainly formed by precisely coupling a flat-panel display and a grating group, wherein the grating group comprises a spectroscopic cylindrical grating and a condensing cylindrical grating. The spectroscopic cylindrical grating is used for separating the directions of rays emitted by different parallax panoramagrams; and the condensing cylindrical grating is used for collecting light emitted by sub-pixels. The grating group comprising the spectroscopic cylindrical grating and the condensing cylindrical grating improves the spectroscopic performance of the free three-dimensional display of the cylindrical grating, widens a three-dimensional visual angle, decreases the left eye and right eye parallax image crosstalk and improves the utilization rate of a light source.
Description
One, technical field
The present invention relates to the cylindrical grating auto-stereoscopic display in the free stereo demonstration field.
Two, background technology
Advantage becomes one of three-dimensional display of present main flow to the cylindrical grating auto-stereoscopic display because it is simple in structure, be easy to realize and stereo display is respond well etc., and its primary structure is that flat-panel monitor installs cylindrical grating additional.Several anaglyphs are that the unit synthesizes a width of cloth stereo-picture according to certain rules and is presented on the flat-panel monitor with the sub-pixel, utilize the branch light action of cylindrical grating to make the light that derives from different anaglyphs propagate to different directions, its right and left eyes is watched different anaglyphs when the beholder is positioned at suitable viewing areas, as shown in Figure 1, according to the binocular parallax principle, the beholder just can watch has relief image.
Common cylindrical grating is made up of a plurality of cylindrical lenses, the xsect of cylindrical lens is a circular arc, its focusing principle as shown in Figure 2, the paraxial focus obvious difference that parallel incident ray focused on from axle, this relatively poor focusing has determined that the aberration of single cylindrical lens imaging is big.Big aberration effects the following performance of cylindrical grating auto-stereoscopic display:
(1) the 3 D visible angle is smaller.Be used for showing that the flat-panel monitor of stereo-picture is positioned at the paraxial focal plane of cylindrical grating, when viewing angle was big, the existence of big aberration caused the focal plane of cylindrical grating obviously to depart from paraxial focal plane, so the beholder can only see fuzzy image through grating.
Crosstalking of the right and left eyes anaglyph of (2) watching increases violent the increase with viewing angle, thereby loses stereoscopic sensation.
(3) the light source utilization factor reduces.The angles of display of flat-panel monitor is about 170 degree, and the stereos copic viewing angle of common cylindrical grating auto-stereoscopic display is about 50 degree, so the light of flat-panel monitor wide-angle institute outgoing is wasted.
Three, summary of the invention
The present invention proposes a kind of auto-stereoscopic display with condensing cylindrical grating, and its primary structure is the accurate coupling of flat-panel monitor and grating group, and wherein the grating group is made up of beam split cylindrical grating and condensing cylindrical grating.The beam split cylindrical grating is used for the radiation direction that different disparity maps send is separated, and condensing cylindrical grating is used for assembling the light that sub-pixel sends.
The elementary cell of beam split cylindrical grating and condensing cylindrical grating is respectively beam split cylindrical lens and condensing cylindrical lens, and both form an optical system, and its focusing principle as shown in Figure 3.Fig. 3 compares with Fig. 2, and the optical system that as seen adds behind the condensing cylindrical lens makes light to focus on better, thereby has reduced aberration.The grating group that is made of beam split cylindrical grating and condensing cylindrical grating makes focusing effect obviously improve, aberration reduces, so just promoted the spectroscopic behaviour of cylindrical grating auto-stereoscopic display, thereby increased the 3 D visible angle and made the reduction of crosstalking of right and left eyes anaglyph.In addition, as shown in Figure 4, after the sub-pixel surface adds the condensing cylindrical lens, compare during with addition polymerization light beam face lens not, the emergence angle scope that sub-pixel emits beam reduces, and emergent light is more concentrated, thereby reduce the unwanted light of wide-angle outgoing, further improved the utilization factor of light source.
Main correlation parameter and technical scheme involved in the present invention are as described below:
At first, the viewpoint of determining the auto-stereoscopic display of band condensing cylindrical grating is counted N, sub pixel width w and the correlation parameter of the beam split cylindrical grating that adopted.The horizontal cycle of beam split cylindrical grating is t
1, radius-of-curvature is r
1, refractive index is n
1, thickness is d
1, the distance of beam split cylindrical grating rear surface and condensing cylindrical grating focal plane is s.
Secondly, the correlation parameter of design condensing cylindrical grating.The horizontal cycle t of condensing cylindrical grating
2Be the integral multiple of sub pixel width, i.e. t
2=kw, wherein k is a positive integer, can realize best three-dimensional display spectrophotometric result when k=1.The refractive index of condensing cylindrical grating is n
2, generally choose the transparent material of high permeability, radius-of-curvature r
2＞kw/2, thickness
The optical system that beam split cylindrical lens and condensing cylindrical lens are formed among Fig. 3, optical system focal plane overlaps with the rear surface of condensing cylindrical lens, being calculated by formula (1) apart from the v value between beam split cylindrical lens rear surface and the condensing cylindrical lens front surface:
At last, condensing cylindrical grating is placed between beam split cylindrical grating and the flat-panel monitor, the stripe direction of condensing cylindrical grating is parallel to the flat-panel monitor vertical direction, and flat-panel monitor is close in the condensing cylindrical grating rear surface.
Four, the description of the drawings
Fig. 1: the light-dividing principle figure of cylindrical grating three-dimensional display
Fig. 2: the focusing principle figure of common cylindrical lens
Fig. 3: the focusing principle figure of the optical system that beam split cylindrical lens and condensing cylindrical lens are formed
Fig. 4: the synoptic diagram of two kinds of emergent light situations of sub-pixel
(a) the sub-pixel emergent light of addition polymerization light beam face lens not
(b) the sub-pixel emergent light of addition polymerization light beam face lens
Fig. 5: the structural drawing of the auto-stereoscopic display of band condensing cylindrical grating
Fig. 6: the structure cross-sectional view of the auto-stereoscopic display of band condensing cylindrical grating
Shown by reference numeral in above-mentioned each accompanying drawing is:
01 beam split cylindrical lens, 02 condensing cylindrical lens, 11 beam split cylindrical gratings, 12 condensing cylindrical gratings, 13 flat-panel monitors.
Annotate: above-mentioned accompanying drawing is not just schematically drawn in proportion.
Five, embodiment
Embodiment:
Fig. 5 is the structure of the auto-stereoscopic display of band condensing cylindrical grating, and Fig. 6 is the structure cross-sectional view of the auto-stereoscopic display of band condensing cylindrical grating.The flat-panel monitor that this three-dimensional display adopts is a LCD, and the resolution that with the sub-pixel is unit is 3*1024*768, and sub pixel width w is 0.0947mm, and the viewpoint number that is adopted is 4.The horizontal cycle t of beam split cylindrical grating
1Be 0.378mm, radius-of-curvature r
1Be 1.85mm, refractive index n
1Be 1.488, thickness d
1Be 3.3mm.The horizontal cycle of condensing cylindrical grating is single sub pixel width, i.e. t
2Be 0.0947mm, the condensing cylindrical grating of employing has 3*1024 condensing cylindrical lens unit, radius-of-curvature r
2Be 0.05mm, refractive index n
2Be 1.488, thickness d
2Be 0.1mm.Being calculated by formula (1) between beam split cylindrical grating rear surface and the condensing cylindrical grating front surface is 1.378mm apart from v.
Claims (1)
1. auto-stereoscopic display with condensing cylindrical grating, it is characterized in that primary structure is the accurate coupling of flat-panel monitor and grating group, wherein the grating group is made up of beam split cylindrical grating and condensing cylindrical grating, condensing cylindrical grating is between beam split cylindrical grating and flat-panel monitor and be close to flat-panel monitor, between beam split cylindrical grating and the condensing cylindrical grating adjacently situated surfaces apart from v by formula
Calculate, wherein r
1Be the radius-of-curvature of beam split cylindrical grating, n
1Be the refractive index of beam split cylindrical grating, d
1Be the thickness of beam split cylindrical grating, r
2Be the radius-of-curvature of condensing cylindrical grating, n
2Be the refractive index of condensing cylindrical grating, d
2Be the thickness of condensing cylindrical grating, the radius-of-curvature r of condensing cylindrical grating
2＞kw/2, the thickness of condensing cylindrical grating
Wherein w is a sub pixel width, k is a positive integer, s is that the beam split cylindrical grating is near the surface of flat-panel monitor and the distance of condensing cylindrical grating focal plane, the condensing cylindrical grating stripe direction is parallel to the flat-panel monitor vertical direction, the condensing cylindrical grating cycle is the integral multiple of sub pixel width, and condensing cylindrical grating is generally chosen the transparent material of high permeability.
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| CN2009102161647A CN101702057B (en) | 2009-11-06 | 2009-11-06 | Free three-dimensional display with condensing cylindrical grating |
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| CN2009102161647A CN101702057B (en) | 2009-11-06 | 2009-11-06 | Free three-dimensional display with condensing cylindrical grating |
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| CN101702057A CN101702057A (en) | 2010-05-05 |
| CN101702057B true CN101702057B (en) | 2011-02-16 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951528B (en) * | 2010-08-13 | 2012-05-23 | 四川大学 | Method for reducing image crosstalk of cylindrical-surface grating stereoscopic display by adopting color filter |
| CN102004323B (en) * | 2010-09-25 | 2012-05-23 | 四川大学 | Converging type integrated imaging three-dimensional display method for enlarging viewing angle and equipment thereof |
| CN102411214B (en) * | 2010-09-25 | 2014-11-19 | 奇美材料科技股份有限公司 | Image light deflection device |
| CN102063008A (en) * | 2010-11-03 | 2011-05-18 | 中航华东光电有限公司 | Multi-viewport free three-dimensional projection system |
| CN102183846A (en) * | 2011-05-24 | 2011-09-14 | 曹夫均 | Stereoscopic display device |
| CN102608768B (en) * | 2012-03-31 | 2015-10-14 | 福州大学 | LED-based two-sided stereo display device of optical grating and preparation method thereof |
| CN103345068B (en) * | 2013-07-10 | 2016-01-20 | 京东方科技集团股份有限公司 | A kind of 3 d display device |
| CN105445833A (en) * | 2014-08-21 | 2016-03-30 | 万维云视（上海）数码科技有限公司 | 3D imaging grating assembly and 3D display device |
| WO2023245551A1 (en) * | 2022-06-23 | 2023-12-28 | 京东方科技集团股份有限公司 | Display device and driving method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607418A (en) * | 2003-08-30 | 2005-04-20 | 夏普株式会社 | Display with multiple view angle |
| CN2909303Y (en) * | 2006-03-17 | 2007-06-06 | 邸元春 | Stereo imaging display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607418A (en) * | 2003-08-30 | 2005-04-20 | 夏普株式会社 | Display with multiple view angle |
| CN2909303Y (en) * | 2006-03-17 | 2007-06-06 | 邸元春 | Stereo imaging display screen |
Non-Patent Citations (2)
| Title |
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| 李小方 等.自由立体显示器观看视疲劳.《液晶与显示》.2008,第23卷(第4期),464-467. |
| 李小方等.自由立体显示器观看视疲劳.《液晶与显示》.2008,第23卷(第4期),464-467. * |
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