CN101339309B - Convertible display screen and its three-dimensional display device - Google Patents
Convertible display screen and its three-dimensional display device Download PDFInfo
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- CN101339309B CN101339309B CN200810063299XA CN200810063299A CN101339309B CN 101339309 B CN101339309 B CN 101339309B CN 200810063299X A CN200810063299X A CN 200810063299XA CN 200810063299 A CN200810063299 A CN 200810063299A CN 101339309 B CN101339309 B CN 101339309B
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Abstract
The invention discloses a transformable display screen and a 3D display device thereof. The transformable display screen switches between a reflective type and a transmissive type. The reflective transformable display screen is composed of a polymer-dispersed liquid crystal layer, a transmissive directing diffuser screen, and a reflector, or alternatively composed of a polymer-dispersed liquid crystal layer and a reflective directing diffuser screen; and the transmissive transformable display screen is composed of a polymer-dispersed liquid crystal layer and a transmissive directing diffuser screen. The 3D display device based on the transformable display screen comprises a high-speed projector, a reflector system, and a transformable display screen, and is capable of switching between spatial volumetric 3D display and spatial panoramic parallax 3D display. With no electric field being applied, the polymer-dispersed liquid crystal layer is ivory-white and severs as a projection diffuser screen to realize volumetric 3D display; and under an electric field being applied, the polymer-dispersed liquid crystal layer is transparent, thereby realizing panoramic parallax 3D display. The two types of 3D display can both fulfill the requirement from an adequate number of viewers for 360 DEG naked-eye observation, and can be switchably realized with complementary advantages favoring observation and locating of 3D spatial objects.
Description
Technical field
The present invention relates to optical devices, relate in particular to a kind of convertible display screen and three-dimensional display apparatus thereof.
Background technology
Dimension display technologies mainly contains hologram three-dimensional demonstration, body 3-D display, stereoscopic 3-D display.Hologram three-dimensional is presented at dynamic demonstration aspect needs spatial light modulator high-resolution, at a high speed, still can't satisfy the reproduction requirement of dynamic holographic 3-D view at present.The body dimension display technologies is to carry out addressing at solid space, controls the brightness of corresponding voxel, finally scans three-dimensional object at three dimensions.The display screen of body three-dimensional has two kinds of vertical plane and helicoids.The body 3-D display has level and vertical parallax, 360 ° of levels, vertical 180 ° as seen, be fit to many people simultaneously around observation.Because when solid space scan, can not control the light emission direction and the light-emitting 3 D angle of each volumetric pixel, therefore certainly existing the perspective blanking problem that the space shows, the front-back while that promptly has a three-dimensional body is as seen.This and our usual visual effect are inconsistent, thus and the overlapping confusion that causes of view before and after can causing.How to realize a kind of dimension display technologies of utilizing prior art just can realize, and the perspective blanking problem that can overcome the body space 3-D display becomes key problem in technology with real space sense.The parallax type 3-D display that stereoscopic three-dimensional is worn polarising glass from needs originally develops into the space panorama parallax 3-D display of today.Space panorama parallax three-dimensional display screen is the plane of directional scattering.The space panorama parallax 3-D display of 360 ° of full visual fields has satisfied the requirement of people's visions well.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of convertible display screen and three-dimensional display apparatus thereof are provided.
Convertible display screen has macromolecule dispersal type liquid crystal layer, directional scattering screen and catoptron; Wherein macromolecule dispersal type liquid crystal layer both sides are respectively equipped with transparent conductive film, are connected with the both positive and negative polarity of controllable electric power respectively at two transparent conductive films, and the outside of directional scattering layer is provided with catoptron, and the directional scattering layer is transmission-type directional scattering screen.
Convertible display screen has macromolecule dispersal type liquid crystal layer and directional scattering screen; Wherein macromolecule dispersal type liquid crystal layer both sides are respectively equipped with transparent conductive film, are connected with the controllable electric power both positive and negative polarity respectively at two transparent conductive films, and the directional scattering screen is reflection-type directional scattering screen.
Convertible display screen has macromolecule dispersal type liquid crystal layer and directional scattering screen; Wherein macromolecule dispersal type liquid crystal layer both sides are respectively equipped with transparent conductive film, are connected with the both positive and negative polarity of controllable electric power respectively at two transparent conductive films, and the directional scattering screen is transmission-type directional scattering screen.
Described directional scattering screen is holographic diffuser screen or binary optical elements.
Three-dimensional display apparatus comprises convertible display screen, mirror system, high-speed projector, and the image that high-speed projector projects enters mirror system through the rotating shaft center, projects to the convertible display screen of rotation again.
Mirror system is made up of 2～10 catoptrons, reflecting prism or catoptrons and reflecting prism.
Convertible display screen of the present invention is when the selective body 3-D display, and this display device can scan the three dimensions scene, has full parallax, but not blanking; When selecting space panorama parallax 3-D display, this display device can show the solid space scene that only has horizontal parallax, can realize the space blanking of 3-D display; Also can timesharing control the 3-D display that macromolecule dispersal type liquid crystal layer is realized two kinds of combinations.All can watch around bore hole for 360 ° based on space body 3-D display of the present invention and space panorama parallax 3-D display for many people, two kinds of convertible realizations of 3-D display mode, both have complementary advantages, and help observation and location to the three dimensions object.
Description of drawings
Fig. 1 is the convertible display screen structural representation of reflection-type;
Fig. 2 is the convertible display screen structural representation of reflection-type of not being with catoptron;
Fig. 3 is the convertible display screen structural representation of transmission-type;
Fig. 4 is the disposable three-dimensional display apparatus principle schematic of display mode.
Among the figure: macromolecule dispersal type liquid crystal layer 1, directional scattering screen 2, transparent conductive film 3, controllable electric power 4, catoptron 5, convertible display screen 6, mirror system 7, high-speed projector 8.
Embodiment
As shown in Figure 1, convertible display screen 6 has macromolecule dispersal type liquid crystal layer 1, directional scattering screen 2 and catoptron 5; Wherein macromolecule dispersal type liquid crystal layer 1 both sides are respectively equipped with transparent conductive film 3, are connected with the both positive and negative polarity of controllable electric power 4 respectively at two transparent conductive films 3, and the outside of directional scattering layer 2 is provided with catoptron 5, and directional scattering layer 2 is transmission-type directional scattering screen.Described directional scattering screen 2 is holographic diffuser screen or binary optical elements.
As shown in Figure 2, convertible display screen 6 has macromolecule dispersal type liquid crystal layer 1 and directional scattering screen 2; Wherein macromolecule dispersal type liquid crystal layer 1 both sides are respectively equipped with transparent conductive film 3, are connected with the both positive and negative polarity of controllable electric power 4 respectively at two transparent conductive films 3, and directional scattering screen 2 is reflection-type directional scattering screen.Described directional scattering screen 2 is holographic diffuser screen or binary optical elements.
As shown in Figure 3, convertible display screen 6 has macromolecule dispersal type liquid crystal layer 1 and directional scattering screen 2; Wherein macromolecule dispersal type liquid crystal layer 1 both sides are respectively equipped with transparent conductive film 3, are connected with the both positive and negative polarity of controllable electric power 4 respectively at two transparent conductive films 3, and directional scattering screen 2 is transmission-type directional scattering screen.Described directional scattering screen 2 is holographic diffuser screen or binary optical elements.
Though three kinds of convertible display screens structurally have nothing in common with each other, disposable principle is the same, all is the voltage by control controllable electric power 4, thus the different conditions of control macromolecule dispersal type liquid crystal layer 1.When controllable electric power 4 not during making alive, there is not electric field between two transparent conductive films 3, high molecule liquid crystal material lack of alignment makes light can't penetrate glass, 1 one-tenth milky of macromolecule dispersal type liquid crystal layer; When controllable electric power 4 making alives, there is electric field between two transparent conductive films 3, the high molecule liquid crystal material is arranged in order, makes light can see through this liquid crystal layer, 1 one-tenth clear, colorless shape of macromolecule dispersal type liquid crystal layer.During 1 one-tenth milky of macromolecule dispersal type liquid crystal layer, convertible display screen is the projection screen of a diffusion, during 1 one-tenth transparence of macromolecule dispersal type liquid crystal layer, directional scattering screen 2 just can the directional scattering image, but this moment convertible display screen through just implementation space panorama parallax 3-D display of rotation.
As shown in Figure 4, three-dimensional display apparatus comprises convertible display screen 6, mirror system 7, high-speed projector 8, and the image that high-speed projector 8 projects enters mirror system 7 through the rotating shaft center, projects to the convertible display screen 6 of rotation again.Described high speed projector 1 per second needs the image of the thousands of frames of high speed projection.Suppose that the three-dimensional scenic per second refreshes 15 times, 300 width of cloth images weekly, the high speed projector must per second projection 4500 frames.In order to reach better visual effect, the frame number of per second even higher.Described mirror system 7 is made up of 2～10 catoptrons, reflecting prism or catoptrons and reflecting prism.This three-dimensional display apparatus can conversion be realized body 3-D display and space panorama parallax 3-D display.The body 3-D display need intercept M width of cloth image successively with three-dimensional scenic along the central shaft cross section, every (360 °/M) intercepting piece image.When showing by Rotation screen, the central shaft of sectional drawing and the turning axle of screen must be coaxial, and projection M width of cloth image in order makes every width of cloth image all show at corresponding correct position weekly.But the screen rotation is wanted fast (per second at least 15 changes), because the persistence of vision of human eye, so can reproduce three-dimensional scenic at three dimensions.The body three-dimensional is the effect of direct modeling three-dimensional scenic.And space panorama parallax 3-D display is different with body 3-D display principle.It is the actual viewing effects of simulation people to a three-dimensional body.When the observer watched around an object, observer's eyes had been seen different visual field scenes, so can perceive the locus of object.When the observer when the movement of objects, the field of view angle of the object of being seen changes thereupon, if therefore we can display an object from each view field image of all directions around it one by one according to the order of visual field.As long as the object field angle image that reproduces is abundant, we just can reproduce three-dimensional scenic between clearancen realistically.Generally in order to make 3-D display true to nature, 360 ° of visual fields need to get the image of 300 field angle at least.Seen different visual field scenes in order to satisfy eyes, the luminous angle of necessary strict control projected image, make that the image low-angle is luminous, the image of diverse location is corresponding to corresponding observer in the same screen, so what eyes were seen is to have binocular visual field's image of correct parallax to form correct stereoscopic parallax effect, implementation space panorama parallax 3-D display.In addition, by switching the voltage of controllable electric power 4, macromolecule dispersal type liquid crystal layer 1 constantly switches between clear, colorless and milky two states, can timesharing realize body 3-D display and space panorama parallax 3-D display.
Claims (6)
1. convertible display screen, its characteristic are that convertible display screen (6) has macromolecule dispersal type liquid crystal layer (1), directional scattering screen (2) and catoptron (5); Wherein macromolecule dispersal type liquid crystal layer (1) both sides are respectively equipped with transparent conductive film (3), two transparent conductive films (3) are connected with the both positive and negative polarity of controllable electric power (4) respectively, the outside of directional scattering screen (2) is provided with catoptron (5), and directional scattering screen (2) is transmission-type directional scattering screen.
2. convertible display screen, its characteristic are that convertible display screen (6) has macromolecule dispersal type liquid crystal layer (1) and directional scattering screen (2); Wherein macromolecule dispersal type liquid crystal layer (1) both sides are respectively equipped with transparent conductive film (3), and two transparent conductive films (3) are connected with the both positive and negative polarity of controllable electric power (4) respectively, and directional scattering screen (2) is reflection-type directional scattering screen.
3. convertible display screen, its characteristic are that convertible display screen (6) has macromolecule dispersal type liquid crystal layer (1) and directional scattering screen (2); Wherein macromolecule dispersal type liquid crystal layer (1) both sides are respectively equipped with transparent conductive film (3), and two transparent conductive films (3) are connected with the both positive and negative polarity of controllable electric power (4) respectively, and directional scattering screen (2) is transmission-type directional scattering screen.
4. according to claim 1,2 or 3 described a kind of convertible display screens, its characteristic is that described directional scattering screen (2) is holographic diffuser screen or binary optical elements.
5. an employing is according to the three-dimensional display apparatus of claim 1,2 or 3 described convertible display screens, its characteristic is to comprise convertible display screen (6), mirror system (7), high-speed projector (8), the image that high-speed projector (8) projects enters mirror system (7) through the rotating shaft center, project to the convertible display screen (6) of rotation again.
6. a kind of three-dimensional display apparatus according to claim 5, its characteristic are that described mirror system (7) is made up of 2～10 catoptrons, reflecting prism or catoptrons and reflecting prism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810063299XA CN101339309B (en) | 2008-08-01 | 2008-08-01 | Convertible display screen and its three-dimensional display device |
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| CN200810063299XA CN101339309B (en) | 2008-08-01 | 2008-08-01 | Convertible display screen and its three-dimensional display device |
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| CN101339309B true CN101339309B (en) | 2011-04-06 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101750868B (en) * | 2010-01-08 | 2011-07-27 | 浙江大学 | Panoramic space three-dimensional display device simultaneously having horizontal and pitching multiple visual fields |
| WO2011020321A1 (en) * | 2009-08-17 | 2011-02-24 | 浙江大学 | Panoramic viewing field three-dimensional display apparatus |
| FR2991786B1 (en) * | 2012-06-08 | 2014-06-20 | Saint Gobain | PROJECTION SCREEN OPERATING IN REFLECTION INCLUDING VARIABLE LUMINOUS DIFFUSION SYSTEM |
| CN103401963B (en) * | 2013-07-31 | 2016-04-13 | 广东欧珀移动通信有限公司 | A kind of can the mobile phone of Transparence Display |
| CN103616769B (en) * | 2013-12-12 | 2016-06-15 | 北京理工大学 | Panorama three-dimensional display apparatus based on single scialyscope and transmission-type scattering screen |
| CN104079916A (en) * | 2014-06-16 | 2014-10-01 | 深圳市德赛微电子技术有限公司 | Panoramic three-dimensional visual sensor and using method |
| CN106405995A (en) * | 2015-08-07 | 2017-02-15 | 珠海兴业应用材料科技有限公司 | Liquid crystal dimming projection display system |
| CN106383430A (en) * | 2016-11-03 | 2017-02-08 | 郭洪礼 | Holographic image display 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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