CN102063008A - Multi-viewport free three-dimensional projection system - Google Patents
Multi-viewport free three-dimensional projection system Download PDFInfo
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- CN102063008A CN102063008A CN201010533579.XA CN201010533579A CN102063008A CN 102063008 A CN102063008 A CN 102063008A CN 201010533579 A CN201010533579 A CN 201010533579A CN 102063008 A CN102063008 A CN 102063008A
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Abstract
The invention discloses a multi-viewport free three-dimensional projection system comprising a projector array and a projector screen. The projector array comprises a plurality of projectors which are arranged at equal intervals on a horizontal line parallel to the projector screen, and the optical axes of the projectors align with the midpoint of the projector screen which is formed by compounding a front grating, a diffusion layer and a back grating through optical cement, wherein the front grating and the back grating are symmetrical relative to the diffusion layer. The invention has the advantages of simple structure, lower manufacture cost, good imaging effect, multi-viewport large screen, high brightness and wide range of applications.
Description
Technical field
The present invention relates to the stereo display technique field, be specifically related to a kind of multi-view auto stereo projection system.
Background technology
At present, it is several that the free stereo demonstration mainly contains holographic three-dimensional technology, flat pannel display, body solid and stereo projection technology etc.Wherein holographic three-dimensional technology is that research history is the longest, the most ripe stereo technology, but because the feasible stereo-picture that is difficult to make a width of cloth full color of the chromatic dispersion problem of hologram image, and flat pannel display and body stereo technology are because the restriction of prior art condition is difficult to realize large screen display.The implementation of stereoprojection has line holographic projections, Fresnel Lenses projection and double grating projection etc.Wherein, bicylindrical optical grating projection stereo projection system has utilized ripe large screen projection technology, can realize the full color stereo-picture of large format more easily, thereby has been subjected to extensive attention.Present projection system architecture is huge, and cost is high, also far can not reach the requirement of commercialization, has restricted the development of stereoprojection.
Summary of the invention
The purpose of this invention is to provide a kind of multi-view auto stereo projection system, overcome the defective of prior art, realize stereo-picture more easily.
Technical scheme of the present invention is as follows:
A kind of multi-view auto stereo projection system, include projector array and projection screen, it is characterized in that: described projector array is made up of a plurality of projectors, described a plurality of projector equally spaced is placed on the same horizontal line parallel with described projection screen, the mid point of the described projection screen of optical axis alignment of each projector; Described projection screen is combined with each other by optical cement by front grating, diffusing layer and back side grating and forms, and wherein front grating and back side grating are about the diffusing layer symmetry.
Described multi-view auto stereo projection system is characterized in that: described front grating is the identical cylindrical grating of optical parametric with described back side grating.
Described multi-view auto stereo projection system is characterized in that: described projector array and described projection screen satisfy following relation:
With
Wherein, n is front grating or back side grating index, and t is the cycle of front grating or back side grating, and d is the thickness of front grating or back side grating, and B is an adjacent projections machine spacing, and L is the distance between projector array and the diffusing layer.
During this multi-view auto stereo projection system work, projector's projection has the image of parallax, form different vision areas through the projection screen spectroscopic imaging, in the urban district of correspondence, can only see corresponding image, when being in corresponding vision area respectively for two, form parallax in two, the observer can feel the stereoeffect of image after brain merges.
Many viewpoints are to realize by increasing projector's number, have enlarged observation visual angle, can watch simultaneously for many people.Simultaneously, the image of the object that if the image of each institute of projector projection is a correspondence position to be clapped, the image that moving-head is seen at each observation point can also obtain motion parallax so just in time corresponding to the three-dimensional scene of seeing in the pictures taken position, makes stereoeffect more true to nature.
Beneficial effect of the present invention:
The present invention is simple in structure, cost is relatively low, and imaging effect is good, has realized the many viewpoints of giant-screen, brightness height, applied range.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a structural representation of the present invention
Embodiment
Referring to Fig. 1,2, a kind of multi-view auto stereo projection system, include projector array 1 and projection screen 2, projector array 1 is made up of a plurality of P1Pn of projector, a plurality of P1Pn of projector equally spaced are placed on the same horizontal line parallel with projection screen 2, the mid point of the optical axis alignment projection screen 2 of each projector guarantees picture inregister on projection screen 2 of each institute of projector projection and Luminance Distribution unanimity; Projection screen 2 is combined with each other by optical cement by front grating 21, diffusing layer 22 and back side grating 23 and forms, wherein front grating 21 and back side grating 23 be about the diffusing layer symmetry, and front grating 21, diffusing layer 22 and back side grating 23 are formed by identical materials.
Wherein, n is the refractive index of front grating 21 or back side grating 21, and t is the cycle of front grating 21 or back side grating 21, and d is the thickness of front grating 21 or back side grating 23, and B is an adjacent projections machine spacing, and L is the distance between projector array 1 and the diffusing layer 22.
Introduce a specific embodiment of the present invention below, the present invention is further described specifically.Be necessary to be pointed out that at this; following examples only are used for the present invention and are described further; can not be interpreted as limiting the scope of the invention; this art skilled person makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to protection scope of the present invention.
Native system adopts 4 DLP projectors to constitute projected array, and separate unit resolution is 1280x1024.Spacing between the projector is 65mm, and projector distance is 2000mm, and grating refractive index is 1.5, and the cycle is 0.5mm, and thickness is 3.85mm, and radius-of-curvature is 1.28mm, and viewpoint has certain continuity in the space, and stereoeffect is better, can satisfy many people and watch simultaneously.
Claims (3)
1. multi-view auto stereo projection system, include projector array and projection screen, it is characterized in that: described projector array is made up of a plurality of projectors, described a plurality of projector equally spaced is placed on the same horizontal line parallel with described projection screen, the mid point of the described projection screen of optical axis alignment of each projector; Described projection screen is combined with each other by optical cement by front grating, diffusing layer and back side grating and forms, and wherein front grating and back side grating are about the diffusing layer symmetry.
2. multi-view auto stereo projection system according to claim 1 is characterized in that: described front grating is the identical cylindrical grating of optical parametric with described back side grating.
3. multi-view auto stereo projection system according to claim 1 is characterized in that: described projector array and described projection screen satisfy following relation:
With
Wherein, n is front grating or back side grating index, and t is the cycle of front grating or back side grating, and d is the thickness of front grating or back side grating, and B is an adjacent projections machine spacing, and L is the distance between projector array and the diffusing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010533579.XA CN102063008A (en) | 2010-11-03 | 2010-11-03 | Multi-viewport free three-dimensional projection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010533579.XA CN102063008A (en) | 2010-11-03 | 2010-11-03 | Multi-viewport free three-dimensional projection system |
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| CN102063008A true CN102063008A (en) | 2011-05-18 |
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| CN201010533579.XA Pending CN102063008A (en) | 2010-11-03 | 2010-11-03 | Multi-viewport free three-dimensional projection system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981280A (en) * | 2011-09-07 | 2013-03-20 | 财团法人工业技术研究院 | Stereoscopic display system and screen module |
| CN103135331A (en) * | 2013-03-13 | 2013-06-05 | 桂林理工大学 | Active-type arbitrary direction three-dimensional projector |
| CN103149787A (en) * | 2013-03-13 | 2013-06-12 | 桂林理工大学 | Active optional direction three-dimensional stereoprojection method |
| WO2013143199A1 (en) * | 2012-03-31 | 2013-10-03 | 福州大学 | Led-based double-faced grating three-dimensional display device and manufacturing method thereof |
| CN103995426A (en) * | 2014-05-29 | 2014-08-20 | 清华大学深圳研究生院 | Stereographic projection display device |
| CN104407443A (en) * | 2014-08-11 | 2015-03-11 | 南京大学 | Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof |
| CN104714361A (en) * | 2014-12-02 | 2015-06-17 | 上海理鑫光学科技有限公司 | Multi-viewpoint 3D display device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981280A (en) * | 2011-09-07 | 2013-03-20 | 财团法人工业技术研究院 | Stereoscopic display system and screen module |
| WO2013143199A1 (en) * | 2012-03-31 | 2013-10-03 | 福州大学 | Led-based double-faced grating three-dimensional display device and manufacturing method thereof |
| CN103135331A (en) * | 2013-03-13 | 2013-06-05 | 桂林理工大学 | Active-type arbitrary direction three-dimensional projector |
| CN103149787A (en) * | 2013-03-13 | 2013-06-12 | 桂林理工大学 | Active optional direction three-dimensional stereoprojection method |
| CN103995426A (en) * | 2014-05-29 | 2014-08-20 | 清华大学深圳研究生院 | Stereographic projection display device |
| CN103995426B (en) * | 2014-05-29 | 2015-11-18 | 清华大学深圳研究生院 | A kind of stereo projection display apparatus |
| CN104407443A (en) * | 2014-08-11 | 2015-03-11 | 南京大学 | Stereoscopic display device based on asymmetric double-cylindrical-lens array and method thereof |
| CN104714361A (en) * | 2014-12-02 | 2015-06-17 | 上海理鑫光学科技有限公司 | Multi-viewpoint 3D display device |
| CN104714361B (en) * | 2014-12-02 | 2017-12-26 | 上海理鑫光学科技有限公司 | A kind of multiple views 3D display device |
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Application publication date: 20110518 |