CN101794027A - Front projection self-stereoscopy three-dimensional display device based on cylindrical grating - Google Patents
Front projection self-stereoscopy three-dimensional display device based on cylindrical grating Download PDFInfo
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- CN101794027A CN101794027A CN201010104135A CN201010104135A CN101794027A CN 101794027 A CN101794027 A CN 101794027A CN 201010104135 A CN201010104135 A CN 201010104135A CN 201010104135 A CN201010104135 A CN 201010104135A CN 101794027 A CN101794027 A CN 101794027A
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Abstract
The invention discloses a front projection self-stereoscopy three-dimensional display device based on a cylindrical grating screen, which comprises the cylindrical grating screen, a longitudinal scattering screen and a projector which are sequentially placed. The cylindrical surface of the cylindrical grating screen faces to the projector and is coated with a reflection film, the longitudinal scattering screen clings to the cylindrical grating screen, the projector projects a three-dimensional image formed by combining perspective projection images of a three-dimensional object with a plurality of visual angles to the cylindrical grating screen, and projection beams which form each perspective projection image are respectively reflected to a corresponding viewpoint to form multi-viewpoint self-stereoscopy three-dimensional display. The invention adopts a front projection system to construct a three-dimensional display, can be used for a three-dimensional cinema needing a large scene and a large picture three-dimensional image and can be watched by naked eyes.
Description
Technical field
The present invention relates to three-dimensional display apparatus, relate in particular to a kind of front projection self-stereoscopy three-dimensional display device based on the cylindrical grating screen.
Background technology
3-D display is different from the two dimension demonstration will bring visual depth perception to the beholder by the whole bag of tricks exactly, make its nature or obtain the information of third dimension degree in the picture artificially, the nature of this obtain manner and nature just have the difference of very three-dimensional and false three-dimensional (accurate in other words three-dimensional) for the beholder.Dimension display technologies develops into and has produced a large amount of achievements today, and these achievements roughly can be divided into hologram three-dimensional demonstration, body 3-D display, stereoscopic 3-D display etc.Holographic technique can produce Space very true to nature, but its high-resolution spatial light modulator of needs and superfast data handling system aspect dynamic demonstration, these two factors have greatly limited this makes this development of technology, makes it can't enter practical application well at present.Body 3-D display and stereoscopic 3-D display all have reasonable display device at present and occur, yet the display device based on these two kinds of methods mostly relies on rotating screen to satisfy the requirement that full visual angle is watched, so display device structure relative complex cost is also relatively more expensive.
Using at present three-dimensional display apparatus with three-dimensional movie theatre exists the visual angle few and the visual angle is discontinuous, and need wear extra glasses and problem such as watch, and advantage of the present invention is to adopt front projection system structure three dimensional display, needing to can be used for the three-dimensional movie theatre of large scene, big picture 3-D view, but and bore hole watch.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of front projection self-stereoscopy three-dimensional display device and method based on the cylindrical grating screen is provided.
Front projection self-stereoscopy three-dimensional display device based on the cylindrical grating screen comprises the cylindrical grating screen of placing successively, vertical diffuser screen and projector, the cylinder of cylindrical grating screen is towards projector and be coated with reflectance coating, vertically diffuser screen is close to the placement of cylindrical grating screen, the 3-D view that projector's projection is combined by the perspective projection image at a plurality of visual angles of three-dimensional body is to the cylindrical grating screen, and the projected light beam that constitutes each perspective projection image is reflected to corresponding viewpoint respectively to form many viewpoints from stereoscopic 3-D display.
Described vertical diffuser screen is vertical diffuser screen of transmission-type.
The present invention adopts front projection system structure three dimensional display, needing can be used for the three-dimensional movie theatre of large scene, big picture 3-D view, but and bore hole watch.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is based on the front projection self-stereoscopy three-dimensional display device vertical view of cylindrical grating screen;
Fig. 2 is that projected image combination mode and many viewpoints generate synoptic diagram;
Fig. 3 is based on the front projection self-stereoscopy three-dimensional display device side view of cylindrical grating screen.
Embodiment
As shown in Figure 1, front projection self-stereoscopy three-dimensional display device based on the cylindrical grating screen comprises the cylindrical grating screen of placing successively 1, vertical diffuser screen 2 and projector 3, the cylinder of cylindrical grating screen is towards projector and be coated with reflectance coating, vertically diffuser screen is close to the placement of cylindrical grating screen, the image of giving projector is that the perspective projection image by a plurality of visual angles of three-dimensional body combines, after the reflection of cylindrical grating screen, the light that each perspective projection image is reflected turns back to corresponding viewpoint respectively to form many viewpoints from stereoscopic 3-D display, front surface at the cylindrical grating screen adds vertical diffuser screen, then viewpoint is that observation point will no longer be confined near the point, but, that is to say and in the longitudinal region at this place, can see the pairing image of this viewpoint in vertical expansion.Traditional is to add cylindrical grating by flat-panel monitor to constitute from stereoscopic three-dimensional display device, the method of utilizing cylindrical grating to reflect beam split is adjusted the light emission direction of pixel on the flat-panel monitor, realize the perspective projection image of different visual angles is reverted to the purpose of corresponding viewpoint, the present invention is the light emission direction that utilizes the mechanism of cylindrical grating reflection beam splitting control pixel, adopt front projection system structure three dimensional display, needing to can be used for the three-dimensional movie theatre of large scene, big picture 3-D view, but and bore hole watch.
As shown in Figure 2, project to the image on the screen, several adjacent pixels form one group as a 3D pixel, and the pairing image of each viewpoint is made up of a pixel in all 3D pixels.Owing to the different pixels in the 3D pixel drops on the diverse location of cylindrical mirror in the cylindrical grating screen, so be reflected to different directions, just can observe the not image of ipsilateral of three-dimensional body in different points of view like this.
As shown in Figure 3, based on the vertical diffuser screen described in the front projection self-stereoscopy three-dimensional display device of cylindrical grating screen, it is vertical diffuser screen of transmission-type, vertically be scattered in horizontal no scattering, can be cylindrical grating or speckle hologram sheet, arrive the light on vertical diffuser screen surface direction is constant in the horizontal and directly pass it, then be scattered in the vertical and come.Front surface at the cylindrical grating screen adds vertical diffuser screen, and then viewpoint is that observation point will no longer be confined near the point, but in vertical expansion, that is to say and can see the pairing image of this viewpoint in the longitudinal region at this place.
Claims (2)
1. front projection self-stereoscopy three-dimensional display device based on cylindrical grating screen, it is characterized in that comprising the cylindrical grating screen of placing successively (1), vertical diffuser screen (2) and projector (3), the cylinder of cylindrical grating screen is towards projector and be coated with reflectance coating, vertically diffuser screen is close to the placement of cylindrical grating screen, the 3-D view that projector's projection is combined by the perspective projection image at a plurality of visual angles of three-dimensional body is to the cylindrical grating screen, and the projected light beam that constitutes each perspective projection image is reflected to corresponding viewpoint respectively to form many viewpoints from stereoscopic 3-D display.
2. the front projection self-stereoscopy three-dimensional display device based on the cylindrical grating screen according to claim 1 is characterized in that described vertical diffuser screen (2) is vertical diffuser screen of transmission-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010104135A CN101794027A (en) | 2010-01-26 | 2010-01-26 | Front projection self-stereoscopy three-dimensional display device based on cylindrical grating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010104135A CN101794027A (en) | 2010-01-26 | 2010-01-26 | Front projection self-stereoscopy three-dimensional display device based on cylindrical grating |
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| CN101794027A true CN101794027A (en) | 2010-08-04 |
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| CN201010104135A Pending CN101794027A (en) | 2010-01-26 | 2010-01-26 | Front projection self-stereoscopy three-dimensional display device based on cylindrical grating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819375A (en) * | 2010-04-16 | 2010-09-01 | 浙江大学 | Total parallax three-dimensional display device |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| CN103616769A (en) * | 2013-12-12 | 2014-03-05 | 北京理工大学 | Panoramic three-dimensional display device based on single projection machine and transmission-type scattering screen |
| CN104735437A (en) * | 2015-03-09 | 2015-06-24 | 南京航空航天大学 | Display screen used for multi-visual point three-dimensional imaging system |
| CN106054512A (en) * | 2015-04-07 | 2016-10-26 | 豪威科技股份有限公司 | Touch screen rear projection display |
| CN111158162A (en) * | 2020-01-06 | 2020-05-15 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06230487A (en) * | 1993-02-08 | 1994-08-19 | Nippon Telegr & Teleph Corp <Ntt> | Multi-lens stereoscopic picture display device |
| CN1350198A (en) * | 2000-10-20 | 2002-05-22 | 三菱电机株式会社 | Back light for liquid crystal display device |
-
2010
- 2010-01-26 CN CN201010104135A patent/CN101794027A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06230487A (en) * | 1993-02-08 | 1994-08-19 | Nippon Telegr & Teleph Corp <Ntt> | Multi-lens stereoscopic picture display device |
| CN1350198A (en) * | 2000-10-20 | 2002-05-22 | 三菱电机株式会社 | Back light for liquid crystal display device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819375A (en) * | 2010-04-16 | 2010-09-01 | 浙江大学 | Total parallax three-dimensional display device |
| CN101819375B (en) * | 2010-04-16 | 2012-05-30 | 浙江大学 | Total parallax three-dimensional display device |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| CN103616769A (en) * | 2013-12-12 | 2014-03-05 | 北京理工大学 | Panoramic three-dimensional display device based on single projection machine and transmission-type scattering screen |
| CN104735437A (en) * | 2015-03-09 | 2015-06-24 | 南京航空航天大学 | Display screen used for multi-visual point three-dimensional imaging system |
| CN106054512A (en) * | 2015-04-07 | 2016-10-26 | 豪威科技股份有限公司 | Touch screen rear projection display |
| CN106054512B (en) * | 2015-04-07 | 2021-06-18 | 豪威科技股份有限公司 | Rear projection display of touch screen |
| CN111158162A (en) * | 2020-01-06 | 2020-05-15 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
| CN111158162B (en) * | 2020-01-06 | 2022-08-30 | 亿信科技发展有限公司 | Super multi-viewpoint three-dimensional display device and system |
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Application publication date: 20100804 |