CN101632312B - Modulator device and apparatus for three dimensional display system - Google Patents

Modulator device and apparatus for three dimensional display system Download PDF

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Publication number
CN101632312B
CN101632312B CN2007800508604A CN200780050860A CN101632312B CN 101632312 B CN101632312 B CN 101632312B CN 2007800508604 A CN2007800508604 A CN 2007800508604A CN 200780050860 A CN200780050860 A CN 200780050860A CN 101632312 B CN101632312 B CN 101632312B
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modem devices
folded
prism
modulator
light beam
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CN101632312A (en
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R·伯格林
B·斯瓦达尔
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Polight ASA
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Polight ASA
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing

Abstract

A modulator and an apparatus comprising the modulator comprising a Tunable Diffraction Grating (TDG) component is arranged with a plurality of individual modulator sections, wherein a prism with appropriate chromatic and polarization filters provides at least two independent overlaid two dimensional images providing stereographic displays for three-dimensional images.

Description

The modem devices and the equipment that are used for three-dimensional display system
Technical field
The present invention relates to display system; And be particularly related to 3-D view and generate the line sweep optical projection system; It comprises the modulator and the specially designed prism of (TDG) element that has tunable diffraction gratings, and it provides division, reorganization or the division of the different colours and/or the polarization state of the light source that embeds as parts/recombinate both.
Background technology
Recent years, have been found that video projector and especially digital projector become more and more popular as the instrument that presents various information to spectators.Typically, these projectors are used for image that the projection computer generates to watching the surface.Video projector allows the user to present the high quality graphic with wide size range like a cork to spectators.Therefore, often find that now these projectors are as the standing equipment in meeting room and other Conference Rooms.
Generally show as flat and two dimension, the degree of depth performance that except the depth of field of image, has no by the image of typical video projector projection for spectators.Such performance can be fit to the application of many types.Yet, in some cases, can expect with characteristics such as the degree of depth in the image for example or texture stress to be compared to common two dimension show possible higher degree.
There are several to be used to generate the scheme of 3-D view in the prior art.For example, can give appearing of the degree of depth to the two dimension performance of image through stereoscopic picture plane ground represent images.That these images comprise is independent, the left eye and the eye image of stack, its be configured to simulate as people's right and left eyes see because the nuance in the outward appearance of the three dimensional object that people's how much separation of eyes on the face cause.Left eye and eye image are appeared respectively makes left-eye image not by spectators' right eye perception, and eye image is by the left eye perception, and the filter of typically being worn by spectators provides.
For example, the stereoscopic picture plane image can appear in the meeting room environment with projection left-eye image respectively and eye image through using image projection system separately.The system of even now can successfully form the stereoscopic picture plane image, but the cost of system and weight can be much higher than single projector.In addition, two projectors can require difficulty and optical alignment consuming time relatively.Equally since the weight and volume of two systems and when changing the position image alignment problem of difficulty, such system can be difficult especially mobile between the position.
Another example of prior art 3D imaging system uses the single projector with the active polarizer that places between projector and the screen.Polarizer is the picture frame that replaces of polarization in the opposite direction circularly.The spectators that put on polarising glass see three-dimensional 3D rendering on screen when the frame alternately seen by right eye and left eye respectively.Yet, produce lower optical efficiency thereby polarizer will absorb some light.In addition, different eyes are shown that alternate frame can cause flicker and staggered pseudomorphism in image.And the response that shows modulator must be that the response twice of the modulator of use in two projector's configurations is fast, and is high because the refresh rate of single projector image must be a twice.
Use laser big a lot of colour gamut than present projector will be provided, thereby produce the image of natural more and saturated color as the stereoscopic picture plane projector of light source.EP0211596A discloses the device that is used to produce stereo-picture, and it comprises the red laser (23) of 610nm, the green laser of 514nm and the blue laser of 476nm.Light from laser (23,24,25) is modulated to a zero level and two first order light beams in first group of sound modulator (26,27,28).Adjust first group of modulator (26,27,28) make these first order light beams have with respect to this zero order beam with the deflecting angle that equates for all primary colors.First group of lens (30,31,32) make from the light directive of first group of optoacoustic modulator (26,27,28) and remove one group for also not by the outer second group of lens (36,37,38) of the retention device of the light of diffraction (stopper) (33,34,35).Second group of lens (36,37,38) gather light to just in time at the point of beam scanner (52) front.Be transmitted before through polarization rotor (41) being transmitted from the light beam (39,40) of second lens (36) through polarization splitting device (42).Modulation first group of polarised light (43,44) in second electrooptic modulator (47), and with respect to second group of polarised light (45,46) of first group of polarised light cross-polarization device (48) reflection directive the 3rd electrooptic modulator (49) that is reflected.Speculum (50,51,53) is collected light (43; 44; 45,46) and light directive first scanner (52) that will collect, and then pass through optical projection system; Wherein the user can watch image through having for the glasses of the different polarizing filter of each corresponding eye, and this polarization is corresponding to the polarization of in equipment, introducing.
GB2265024A openly comprises first hyaline layer (1), with a certain distance from the modulator of second deformable layer (5) of first hyaline layer (1) inboard (6).Prism (9) is positioned at above first hyaline layer (1).Deformable layer (5) is out of shape through applying signal.
The open device (10) that separates light (26 ') from incident beam (26) of US2004/0008928A with different wave length.Matrix (12) has a layer structure (14), and the member of its middle level structure (14) has different optical signatures, and it provides the separation and the Polarization Control of light.
WO/90/03086A openly is used for the device (1) that stereo-picture reappears in online scanning-projection system.This device comprises a plurality of visual field (5), and it has the separative element (6) with polarizing filter.Before each separative element, be provided with display with double faces (14).
Generally speaking, the technical scheme that obtains the stereoscopic picture plane image with Projection Display of previously known typically comprises a plurality of light path systems of high complexity and cost, or the single-chip technical scheme of poor brightness performance and big response time requirement.
Therefore, exist being used for the simple needs of stereoscopic picture plane optical projection system cheaply of display image, it can produce the flicker-free image with big colour gamut.
In the prior art, 3D stereoprojection has used single sided board DMD (DMD) system to realize that wherein each left side/right frame for every eye shows in order.When the user puts on the glasses that have with projector synchronous shutter function,, projector have only left eye to allow to see images displayed when showing " left-eye frame " respectively, and similar for right eye.
Yet; Such technical scheme need show modulator and electronic equipment more than the wide projector of biobelt; Because frame rate need be the twice of " single vision " image rate avoiding sparkle artifact, and therefore in fact can not demonstration for example have the full HDTV resolution or the higher gray level resolution of complete 8 bits with current DMD component technology.
Other examples uses of the technical scheme of prior art separate with a left side/right eye of the anaglyph of single sided board DMD systems incorporate, and wherein spectators put on the glasses with coupling colour band.Yet, be low-down for this luminance efficiency of white light source.The operation in tandem pattern of system increases the harsh requirement to the response speed that shows modulator and drive electronics.
Another example of art methods is to use two LCOS (liquid crystal over silicon) display; And having in the viewer side of system on the sheet glass of passive polarizing filter provides a left side/right eye to separate respectively; And the orientation through these filters of coupling is exported with a left side/right side from projector, because the polarisation of light of incident is by cross-polarization on arbitrary LCOS modulator.
Color and brightness uniformity and thermal stability under this situation, and, receive very big concern from the division/reorganization (it means complicated optical system) of the polarised light of two displays.Response speed also is a problem, because each LCOS modulator must show full RGB color framing in given frame rate.
Summary of the invention
According to aspects of the present invention, single-chip 3D is provided the system of imaging, wherein separating by polarization, colour band or these combination provides.
According to the preferred example of the embodiment of the invention, use tunable diffraction gratings (TDG), especially the grating of explanation in Norwegian patent applications numbers 20054834 for example.The operation principle of this tunable diffraction gratings is based on owing to the boehmite gel layer or has the optical diffraction that the surface modulation of the film of equal optics and functional characteristic causes.The basic principle of these modulators is well-known and had been used for projection application since the introducing Eidophor projection (Eidophor project) in the past from surpassing 60 years.
According to the example of the embodiment of the invention, specially designed prism is used for division, reorganization, or as for the division/reorganization element from the combination of the different colours of the light source that provides and/or polarization state, wherein technical scheme provides as single parts.Single color and/or polarization state from light source are drawn towards lip-deep each modulator part at single TDG.Through the part of prism as modulator is provided, minimized necessary aligning adjustment, and very compact systems technology scheme is provided.
According to aspects of the present invention, this notion has been simplified optical system and has been reduced cost, effort and the investment in the production assembling process.
According to other aspect of the present invention, advantage is, but is not limited to, and compares the system complexity and the cost of reduction with multicore chip technology scheme, compares the response speed requirement of reduction with current single-chip technical scheme, the refresh rate of improvement etc.
The present invention is that through the combination of using polarization and color to divide three-dimensional imaging to be provided be possible on the other hand.The effect of this attributes is that each image can be presented to different spectators group, for example through provide " demonstrator's pattern " wherein the demonstrator can obtain than spectators' more images content.
Description of drawings
Fig. 1 illustrates according to the example that the present invention is based on the modem devices embodiment of polarization splitting.
Fig. 2 illustrates according to another example that the present invention is based on the modem devices embodiment of polarization splitting.
Fig. 3 illustrates the example that comprises according to the embodiment of the colour projection system of the modulator design of Fig. 2.
Fig. 4 illustrates another example according to the modem devices embodiment that the present invention is based on the color division.
Fig. 5 illustrates according to another example that the present invention is based on the modem devices embodiment of color and polarization splitting.
Embodiment
One aspect of the present invention is to use the TDG modulator, and it comprises one group of electrode that is positioned at from functional distances such as gel, film or polymer, makes that the diffraction grid forms on the surface of gel or film etc. when on electrode, applying suitable voltage.One in the characteristic of such TDG modulator is that some groups of absolute electrodes can be combined in from gel or film one functional distance, thereby is provided at the independent diffraction of the light of incident on the different piece on surface of the gel that is positioned on each electrode group or film respectively.Therefore, according to the example of the embodiment of the invention, the for example division of the incident beam of laser and polarization is provided guides light beam towards the gel of TDG parts or the appropriate section on film surface then, makes the image of modulating respectively for right and left eyes become possibility.For example before modulator and/or the Optical devices that are provided with behind the modulator provide essential device to realize the 3D optical projection system.So according to aspects of the present invention modulator can be set to the single-chip element.
Fig. 1 illustrates the example according to the single-chip embodiment of the modem devices that the present invention is based on polarization splitting.Laser, 1, be incident on the modulator prism.Light is reflected and leaves polarizing filter 2, and it is divided into the light beam of two separation with light beam, 1s and 1p, and wherein their independent polarization state is about orthogonal.Each light beam is incident on the separate modulation part of single TDG modulator surface 4.Different comb mesh pattern provides through the voltage that is applied on electrode 3s and the 3p; Make the angle of controlling the diffraction laser beam respectively become possibility, and 3D effect can be through watching diffraction light to obtain like the known usefulness appropriate optical device of those skilled in the art.
Fig. 2 illustrates according to another example that the present invention is based on the chip modulator device embodiment of polarization splitting.Red, green and blue laser 5 is incident on the modulator prism.Light is reflected and leaves a folded polarization color filter 2.The effect of reflection is that incident light 5 is divided into six bundle separating light beams, 4R s, 4R p, 4G s, 4G p, 4B sAnd 4B pEach beam characteristics is unique combination of wavelength and polarization state.The polarization state of each wavelength is about orthogonal.Each light beam incides the separate modulation part of TDG modulator surface 4 then.By being applied to electrode 3R s, 3R p, 3G s, 3G p, 3B sAnd 3B pOn the different comb mesh pattern that provides of voltage make the angle of controlling the diffraction laser beam respectively become possibility, known like those skilled in that art.Fig. 3 describes according to the example that present invention resides in the 3D display system of the modulator of describing among Fig. 2.
With reference to figure 3; The different laser color; R, G and B (red, green and blue) are by means of two dichroic filter (miscellaneous parts; For example the X-prism also can be used to implement this aligning) 9R and 9G be by coaxial alignment, and is conducted through beam shaping relay optics (all colours is shared) 10 to modulator 11, its with beam splitting for its color with polarized component and modulate these different light beams individually and guide them then towards projecting optical device 12.Schlieren stop (schlieren stop) 13 is used to filter out the unwanted order of diffraction and scanning reflection mirror 14 and is used for keeping generating on the screen 15 the overlapping of two 2D images with cross-polarization character at polarization.3D rendering produces by means of the passive polaroid glasses that spectators wear.The light that each eyeglass of glasses passes through about orthogonal ground polarization and pile up (polarizing stack) according to the polarization in the modulator and dispose and make the left eye that only arrives spectators from the light one of in the projected image, and only arrive spectators' right eye from the light of another projected image.When left eye sees that the stereoscopic picture plane effect produces 3-D view when being different from the image that right eye sees, known like those skilled in that art.
Fig. 4 illustrates another example according to the embodiment of the modem devices that the present invention is based on the color division.The coaxillay aligned laser beam of six bundles (two bundles are red, and two bundles are green and two bundles are blue) 7 with different wave length incides on the modulator prism.Light is reflected and leaves a folded color spectroscope 8.The effect of reflection is that incident light 7 is divided into the separating light beam 7R that six bundles have different wave length 1, 7R 2, 7G 1, 7G 2, 7B 1And 7B 2Each light beam incides on the separate modulation part of single TDG modulator surface 4 then.By being applied to electrode 3R 1, 3R 2, 3G 1, 3G 2, 3B 1And 3B 2On the different comb mesh pattern that provides of voltage make the angle of the diffraction laser beam of control (or different) wavelength separately become possibility.Two overlapping 2D images use with the optical projection system of in Fig. 3, describing in similar projecting optical device be projected on the screen.3D rendering produces by means of the passive filter goggle that spectators wear.Each eyeglass of glasses makes different wave length use color 7R through making right eye (for example) see 1, 7G 1And 7B 1The image that produces, and left eye (for example) is seen and is used color 7R 2, 7G 2And 7B 2The image that produces.When left eye sees that the stereoscopic picture plane effect produces 3-D view when being different from the image that right eye sees, known like those skilled in that art.
Fig. 5 illustrates another example according to the embodiment of the modem devices that the present invention is based on color and polarization splitting.The coaxillay aligned laser beam of six bundles (two bundles are red, and two bundles are green and two bundles are blue) 16 with different wave length incides on the modulator prism.Light is reflected and leaves a folded color and a polarizing filter 17.The effect of described reflection is that incident light 16 is divided into 12 bundle separating light beam 16R 1s, 16R 1p, 16G 1s, 16G 1p, 16B 1s, 16B 1p, 16R 2s, 16R 2p, 16G 2s, 16G 2p, 16B 2sAnd 16B 2pEach light beam has unique combination of wavelength and polarization state.The polarization state of each wavelength is about orthogonal.Each beam characteristics is unique combination of wavelength and polarization state.The polarization state of each wavelength is about orthogonal.Each light beam incides on the separate modulation part of single TDG modulator surface 4 then.By being applied to electrode 3R 1s, 3R 1p, 3G 1s, 3G 1p, 3B 1p, 3B 2s, 3R 2s, 3R 2p, 3G 2s, 3G 2p, 3B 2sAnd 3B 2pOn the different comb mesh pattern that provide of voltage make the angle of controlling the diffraction laser beam respectively become possibility.Four overlapping 2D images use with the optical projection system of in Fig. 3, describing in similar projecting optical device be projected on the polarization maintenance screen.3D rendering produces by means of the passive filter goggle that spectators wear.Each eyeglass of glasses passes through the different wave length with the different polarization combinations of states.A spectators' right eye for example, is seen with color and polarization combination, for example 16R 1s, 16G 1sAnd 16B 1sThe image that is produced, and left eye is seen with color and polarization combination, for example 16R 2s, 16G 2sAnd 16B 2sThe image that is produced.Another right eye of wearing the spectators of different glasses is seen with color and polarization combination, for example 16R 1p, 16G 1pAnd 16B 1pThe image that is produced, and left eye is seen with color and polarization combination, for example 16R 2p, 16G 2pAnd 16B 2pThe image that is produced.When left eye sees that the stereoscopic picture plane effect produces 3-D view to every spectators when being different from the image that right eye sees.Because four different 2D doublings of the image, two different 3D renderings can be presented to the spectators that wear different glasses.This can have many application, and for example, the multitask purposes is presented to different spectators group comprising each image of information, for example " demonstrator's pattern " wherein the demonstrator can obtain than spectators' more images content.
Aspect of the present invention is to utilize the character of TDG modulator so that two arrays of electrodes at least to be provided; They are relevant with each state that constitutes the light of wanting images displayed respectively; For example through on the electrode group, applying suitable voltage respectively, then through display optical device and scanning reflection lens device to be used to control the angle of each diffraction laser beam.Another example according to an embodiment of the invention, the angle of each diffracted beam are controlled through geometry of the electrode pattern relevant with that bundle diffracted beam respectively.

Claims (12)

1. being used for online scanning-projection system provides the modem devices of 3-D view; Wherein, Image is watched through optical filter by the user, and said modem devices comprises tunable diffraction gratings TDG parts (4), and wherein a plurality of absolute electrodes groupings provide a plurality of separate modulation device parts in the said TDG parts; Wherein, said modem devices also comprises:
Guiding incident light (1,5,7; 16) the orientating reflex device (2,6,8; 17) prism, said reflection unit (2,6; 8,17) division of the component that is divided into said incident light is provided, wherein; By the corresponding modulating part of said prism guiding towards said TDG parts (4), wherein, the angle of the diffracted beam that each is guided out from said modem devices through said prism divides the combination of the two by the voltage control that is applied on each each self-electrode each self-electrode dividing into groups so that polarization splitting or color division or polarization splitting and color to be provided from each component separately of the said division of said incident light.
2. modem devices as claimed in claim 1, wherein, said division is provided by a folded polarizing filter.
3. modem devices as claimed in claim 1, wherein, said division is provided by a folded color filter.
4. modem devices as claimed in claim 1, wherein, said division is provided by a folded color filter and polarizing filter.
5. modem devices as claimed in claim 1, wherein, said modem devices is provided with a polarizing filter (2); A said polarizing filter (2) reflect from the incident light (1) of a lasing light emitter and with its be split into the light beam that two bundles separate (1s, 1p), wherein; Each light beam (1s; Polarization state 1p) is orthogonal, wherein, and folded light beam (1s; 1p) be directed to said TDG parts (4) by said prism; Said TDG parts (4) comprise the modulator part (3s) of a branch of (1s) of modulation in the said folded light beam and another modulator part (3p) of another bundle folded light beam (1p) of modulation, and wherein are applied to for each modulator partly (3s, the angle of the diffracted beam that the voltage control on each self-electrode group of correspondence 3p) is guided out from said modem devices through said prism.
6. modem devices as claimed in claim 1, wherein, said modem devices is provided with a folded color polarizing filter (6), and said one folded color polarizing filter (6) reflection and division are from the incident light (5) of a redness, a green and a blue laser source, wherein; Said red laser be split into the light beam that two bundles separate with orthogonal polarization state (5Rs, 5Rp), said green laser be split into the light beam that two bundles separate with orthogonal polarization state (5Gs, 5Gp); Said blue laser be split into the light beam that two bundles separate with orthogonal polarization state (5Bs, 5Bp), wherein, folded light beam (5Rs; 5Rp, 5Gs, 5Gp, 5Bs; 5Bp) be directed to said TDG parts (4) by said prism, said TDG parts (4) comprise 6 modulator parts (3Rs, 3Rp, 3Gs; 3Gp, 3Bs, 3Bp), its each modulate corresponding folded light beam respectively; Wherein, said prism is guided out diffracted beam separately from said modem devices through said prism at a certain angle, and said angle is by being applied to each modulator part (3Rs, 3Rp separately; 3Gs, 3Gp, 3Bs, the voltage control on the electrode in 3Bp).
7. modem devices as claimed in claim 1; Wherein, Said modem devices is provided with a folded color filter (8), and said one folded color filter (8) reflection and division are from six incident lights (7) with coaxial alignment laser of different wave length, wherein; Said incident light (7) comprises two redness, two greens and two blue laser source, and said one folded color filter (8) provides six bundles to have the folded light beam (7R of different wave length 1, 7R 2, 7G 1, 7G 2, 7B 1, 7B 2); Wherein, Said prism is directed in the said TDG parts (4) six independently modulator parts with said six bundle folded light beams, wherein, and the angle of the diffracted beam that the voltage control that applies on the electrode in the modulator part separately of each in said TDG parts is come out from said modem devices through said prism; Wherein, said diffracted beam can be set to two two dimensional images of stack respectively by Optical devices.
8. modem devices as claimed in claim 1; Wherein, said modem devices is provided with a folded color and a polarizing filter (17), the i.e. reflection of two redness, two greens and two bluenesss of coaxial alignment laser beam that said one folded color and polarizing filter (17) provide six bundles to have different wave length; Wherein, Said filter piles up (17) provides 12 bundle separating light beams, and wherein, each light beam separately has unique combination of wavelength and polarization state; Wherein, Said prism is directed to said 12 bundle folded light beams and comprises 12 independently TDG devices (4) of modulator part, wherein, and the angle of the diffracted beam that the voltage control on the electrode in each 12 modulators part is separately come out from said modem devices through said prism; And wherein, said diffracted beam can be set to comprise four two dimensional images that superpose respectively of two different 3-D views by Optical devices.
9. like each described modem devices in the claim 1 to 5, wherein, the angle of the diffracted beam that comes out from said modem devices is by the geometry control of the electrode each modulator part separately.
10. like each described modem devices among the claim 1-8, wherein, provide said modem devices as single integrated electronics.
11. be used for online scanning-projection system provide 3-D view, comprise equipment like claim 5,6,7 or 8 described modem devices (11); Wherein, Said equipment comprises two dichroic filter (9R; 9G); It is red, green and blue that it aims at three different laser colors coaxially, and it then is conducted through beam shaping relay optics (10) towards said modem devices (11), its with said beam splitting for its color with polarized component and modulate this different light beam individually; Guide said light beam towards projecting optical device (12) then; Wherein, the schlieren stop (13) behind said projecting optical device (12) filters out the unwanted order of diffraction from the modulator in the said modem devices (11) part, and the light beam through scanning reflection mirror (14) keeps providing on the screen (15) the overlapping of a plurality of two dimensional images with cross-polarization character at polarization afterwards.
12. equipment as claimed in claim 11, wherein, said coaxial alignment is provided by the X prism.
CN2007800508604A 2006-12-04 2007-12-04 Modulator device and apparatus for three dimensional display system Expired - Fee Related CN101632312B (en)

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PCT/NO2007/000429 WO2008069679A1 (en) 2006-12-04 2007-12-04 Modulator device and apparatus for three dimensional display system

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