CN202631946U - Liquid crystal on silicon projection optical system adopting polarized beam splitting prism - Google Patents
Liquid crystal on silicon projection optical system adopting polarized beam splitting prism Download PDFInfo
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- CN202631946U CN202631946U CN2012202277458U CN201220227745U CN202631946U CN 202631946 U CN202631946 U CN 202631946U CN 2012202277458 U CN2012202277458 U CN 2012202277458U CN 201220227745 U CN201220227745 U CN 201220227745U CN 202631946 U CN202631946 U CN 202631946U
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Abstract
The utility model provides a novel liquid crystal on silicon projection optical system adopting a polarized beam splitting prism. The projection optical system comprises a light source (1), a collimated dodging module (2), a square polarized beam splitting prism (3), a hexagon L-shaped prism (4), polarizing plates (5, 6), reflecting liquid crystal on silicon (7, 8) and an imaging module (9). The liquid crystal on silicon projection optical system adopts a bi-plate polarized beam splitting prism as the core dodging element of the optical engine of the reflecting liquid crystal on silicon projection system, the special prism structure is designed, the polarizing plates or polarizing films are added, the optical contrast is increased by 200 times, and the problem that the optical elements can not be added to a single-plate beam splitting prism to improve the contrast ration is avoided.
Description
Technical field
The utility model relates to a kind of LCD projecting system; In particular, the utility model relates to a kind of polarization splitting prism reflection liquid crystal over silicon projection optical system, and it utilizes the special construction polarizing prism that light beam is carried out the two-beam separation; Purify and close light, realize that polarized light utilizes Projection Display again.
Background technology
In recent years, projector is developed to the engineering projection of jumbotron high resolving power with to microminiaturization, Highgrade integration, portable this both direction by professional application gradually, is dissolved into production widely; Teaching; Movie theatre in family's every field, becomes the display technique of main flow.And on the basis that reflective liquid crystal over silicon further develops, the polarization type projection is high with its light output quantity, and light engine is little, and characteristics such as projected resolution height become the focus that shadow casting technique is studied.Reflective projection LCD system on silicon has two light-source types, double lens type, the single-lens formula of single light source etc.Two light-source types have added second light source on traditional structure, and the second tunnel reflection liquid crystal over silicon control system, improve luminous energy, realize that two width of cloth pictures export simultaneously, and still, actual debuging exists two light source color temperatures and the brightness can't consistent technological difficulties.
The double lens type structure has been improved the deficiency of two light-source type structures, has also introduced the problem of debuging that picture overlaps simultaneously.The single-lens formula of single light source can make light path succinct, debugs easily, and structure is compact more, and cost is low, and realizes that polarized light utilizes again, is that light utilization efficiency is the highest in three kinds of modes.The single-lens formula of single light source mainly contains two kinds of monolithic polarization splitting prism and multi-disc polarization splitting prisms.The monolithic polarization splitting prism is simple for structure, is fit to portable small-sized projector and hand holding type miniature projector, and deficiency is that the realization of light engine stereoeffect mainly depends on this device of polarization splitting prism.
The coating process of polarization splitting prism has limited the consistance of two width of cloth projected picture contrasts at present, so this mode realizes that the effect of stereoprojection is not fine.The former is complicated for multi-disc polarization splitting prism formula texture ratio, can add polaroid in the inner many places of this beam-splitting structure and improve the optical contrast, realizes high definition stereoprojection.Owing to introduced a plurality of optical elements, luminous energy descends greatly, and capacity usage ratio is lower than the former.
The utility model content
To technological deficiency of the prior art, the utility model provides the reflective projection LCD system on silicon of a kind of polarization splitting prism.
The utility model is realized through following technical scheme:
Said projection optical system includes light source (1), the even optical module (2) of collimation, square polarization splitting prism (3), hexagon L type prism (4), polaroid (5,6), reflective liquid crystal over silicon (7,8), image-forming module (9);
Said collimation is spared optical module (2) and is positioned on the emitting light path of light source (1); Said square polarization splitting prism (3) is positioned on even optical module (2) light path afterwards of collimation; Said polaroid (5,6) is positioned at after the both sides emergent light of square polarization splitting prism (3); Said hexagon L type prism (4) is positioned at square polarization splitting prism (3) afterwards; Said reflective liquid crystal over silicon (7,8) is positioned at the first time of hexagon L type prism (4) after the emergent light, and said image-forming module (9) is positioned at after the secondary emitting light path of hexagon L type prism (4);
After the light that said light source (1) sends is spared optical module (2) through collimation; Via square polarization splitting prism (3) beam splitting, after polaroid (5,6) raising polarized light contrast, get into hexagon L type prism (4); Reflective liquid crystal over silicon (7,8) gets into this prism with hexagon L type prism (4) emergent light secondary reflection; Realize that light path adjustment and image load, two bundle polarized lights get into the imaging of image-forming module (9) back by the synthetic single beam of hexagon L type prism (4), output on the projection screen.
The utility model on the other hand; Said hexagon L type prism (4) includes polarizing coating (14,15,16); The light that said light source (1) sends is divided into direction of vibration P, the S polarized light (5,6) of 90 degree each other through the even optical module (2) of collimation through square polarization splitting prism (3), and said P, S polarized light (5,6) are partial poolarized lights; Vibrate behind P polaroid (5) through P from the partial poolarized light of square polarization splitting prism (3) transmission plane outgoing; Obtain the higher P polarized light of purity, from the partial poolarized light of square polarization splitting prism (3) reflecting surface outgoing through the S vibration behind S polaroid (6), obtain the higher S polarized light of purity; After P, S polarized light (5,6) improve the contrast of polarized light, get into hexagon L type prism (4);
Wherein, said S polarized light (6) is reflexed on the reflective liquid crystal over silicon (7) by prism polarizing coating (14,15,16), when reflective liquid crystal over silicon (7) descends in working order; The S polarization state changes; Become P light, and after the reflection, get into hexagon L type prism (4) for the second time; Said P polarized light penetrates hexagon L type prism (4), gets into image-forming module (9) at last;
Said P polarized light (5) is reflexed on the reflective liquid crystal over silicon (8) by prism polarizing coating (14,15,16), and following in working order when reflective liquid crystal over silicon (8), the P polarization state changes; Become S light, and after the reflection, get into hexagon L type prism (4) for the second time; Said S light is through hexagon L type prism (4) two secondary reflections; Get into image-forming module (9) at last, it overlaps with the first bundle P light, realizes dual-polarization attitude digraph case output stereo projection display.
The utility model on the other hand, said hexagon L type prism (4) includes little triangular prism (10,11), big triangular prism (12,13) and polarizing coating (14,15,16); It is an integral body that said hexagon L type prism (4) includes little triangular prism (10,11), big triangular prism (12,13) and polarizing coating (14,15,16).
The utility model on the other hand, said little triangular prism (10,11) and big triangular prism (12,13) gummed, wherein, cemented surface plates polarizing coating (14,15) between said little triangular prism (10,11) and the big triangular prism (12,13); Cemented surface plating polarizing coating (16) between the said big triangular prism (12,13).
The utility model on the other hand; (3) two vertical plane emergent lights of said square polarization splitting prism are two vertical bundle polarized lights of direction of vibration; Vertical exit facet is parallel with little triangular prism (10, the 11) two sides of polaroid (5,6) and said hexagon L type prism (4); Two bundle polarized lights get into from little triangular prism (10,11) two sides respectively, pass through polarizing coating (14,15) respectively, then respectively transmission to take place at the rete place and reflect dual mode for the first time from hexagon L type prism (4) outgoing; Get into reflective liquid crystal over silicon (7,8); Get into hexagon L type prism (4) once more by reflective liquid crystal over silicon (7,8) polarization by reflection light beam then, locate close light with the reflection dual mode at polarizing coating (16) to go out to take place transmission at rete respectively, from one of them big triangular prism (12,13) outgoing.
The utility model on the other hand, said square polarization splitting prism (3) and polaroid (5,6) are a unitary construction, wherein square polarization splitting prism (3) can be two little triangular prisms and forms.
The utility model on the other hand, said light source is the visible waveband light source, led light source, perhaps LASER Light Source.
The utility model on the other hand; Said LCD projecting system includes light source (1), the even optical module (2) of collimation, divides actinic light and image to load module (17,18,19); Light-combining prism (20) and image-forming module (9); Said light-combining prism (20) at module (17,18,19) afterwards, three exiting surfaces of module are corresponding to (20) three incidence surfaces of light-combining prism, said image-forming module (9) is positioned at after light-combining prism (20) exiting surface;
When said light source is R/G/B independence three-color light source; Behind the light beam process module (17,18,19), the reflection liquid crystal over silicon is only controlled monochrome in the module, output monochrome image during mould splits; Three same times of module are exported the RGB image three-colo(u)r of same image; Get into light-combining prism (20) and close bundle, image output is accomplished in image-forming module (9) imaging.
The utility model on the other hand, when said light source (1) was R/G/B independence three-color light source, said reflective liquid crystal over silicon (7,8) controlled frequency was 180Hz; Export three groups of monochrome images during mould splits; Through closing the bundle imaging, realize three a series of paintings stereoprojections, or six a series of paintings two-dimensional projections.
The utility model on the other hand, when said light source (1) was R/G/B independence three-color light source, said reflective liquid crystal over silicon (7,8) controlled frequency was 240Hz; Export four groups of monochrome images during mould splits; Through closing the bundle imaging, realize four a series of paintings stereoprojections, or eight a series of paintings two-dimensional projections.
It all is to be accomplished by single prism that the adjustment of the light path of the utility model and light beam close light.Compare with high-contrast polygon prism light channel structure, two-beam need not to avoid extra energy loss through clearance or extra bright dipping incidence surface.Have only debuging of two prisms in the light path, number of elements is less, so the resetting difficulty of prism module is less.
In the reflective projection LCD system on silicon of dual-polarization Amici prism of the utility model; In order to solve the problem that traditional single polarization splitting prism causes two picture contrast to descend owing to the coating process restriction; Designed complementary dual-polarization Amici prism, reserved two place's faying faces, added single vibration to polaroid; Through improving the purity of two bundle polarized lights of 90 degree each other, improve the contrast of two pictures.Compare with traditional polygon prism structure, reduced the bright dipping incidence surface, reduce resetting difficulty.
In order further to improve light utilization efficiency; What the reflective projection LCD system on silicon of above-mentioned a kind of novel single-polarization Amici prism adopted is the novel single-polarization Amici prism, and this prism is by four little triangular prisms, and two big triangular prisms are formed; Compare in the dual-polarization Amici prism; Remove two single vibrations to polaroid, promptly in the dual-polarization Amici prism, square prism and the faying face of hexagon L type prism plate vibration respectively and become to 90 polarizing coatings of spending each other; Adopting the glue bond mode, is a whole prism with dual-polarization Amici prism architecture advances; Compared to dual-polarization Amici prism structure, the novel single-polarization Amici prism further reduces transparent surface, avoids single vibration to the influence of polaroid to light utilization efficiency; And debuging of single prism is lower than biprism resetting difficulty.
According to said novel polarization splitting prism reflection liquid crystal over silicon projection optical system; The novel polarization splitting prism of a kind of many a series of paintings reflection projection LCD system on silicon includes light source, the even light of collimation, loads module, light-combining prism and image-forming module based on the branch actinic light and the image of above-mentioned novel prism.Said light-combining prism is after module, and three exiting surfaces of module are corresponding to three incidence surfaces of light-combining prism, and said image-forming module is positioned at after the light-combining prism exiting surface.
Said light source is divided into three light paths, and first light path is red wave band visible light, requires to adopt led light source or LASER Light Source according to different brightness, and red visible light gets into above-mentioned novel polarization splitting prism after sparing photosystem; Novel Amici prism is divided into two vertical each other bundle polarized lights of direction of vibration with red visible light, and behind direction of vibration identical polaroid or polarizing coating purification, through the light path adjustment of follow-up prism, getting into frequency is the monochrome reflection liquid crystal over silicon of 180Hz; Every width of cloth picture signal is 60Hz, the input that 180Hz liquid crystal modulating frequency can corresponding three width of cloth picture signals; Two reflection liquid crystal over silicon are worked simultaneously, can realize the signal output of six width of cloth images, perhaps corresponding three width of cloth left-eye image and three width of cloth eye image, the output of three groups of three-dimensional monochrome signals; The output signal is imported six width of cloth two dimensional images or three groups of three-dimensional monochrome images by above-mentioned image-forming module after getting into light-combining prism.
In like manner; Second, third light path is green, blue wave band visible light; Mode according to above-mentioned red wave band visible light is spared optical module through collimation; Behind novel polarization splitting prism and the two liquid crystal over silicon chip, accomplish the signal loading of six width of cloth two dimensional images or three groups of three-dimensional monochrome images, get into light-combining prism; Light-combining prism will be accomplished the projection of colored six width of cloth two dimensional images or three groups of three-dimensional monochrome images from three coloured light image combined color images of three directions entering.
The utility model reflection liquid crystal over silicon controlled frequency is 240Hz; Load four width of cloth picture signals on the single reflective liquid crystal, every width of cloth picture signal is exported four groups of monochrome images during still for mould splits, forms images through closing bundle; Realize four a series of paintings stereoprojections, or eight a series of paintings two-dimensional projections; By that analogy, the reflective liquid crystal over silicon that has more high frequency liquid crystal control can be realized more group projected pictures.
The beneficial effect of the utility model is: the utility model adopts the core beam splitter of biplate polarization splitting prism as reflective projection LCD system on silicon light engine; Design special prism structure; Add polaroid or polarizing coating; The optical contrast has improved 200 times, avoids the monolithic Amici prism can't add the problem that optical element improves contrast; The novel Amici prism structure of symmetrical expression guarantees the light path symmetry, and is simple for structure; Biprism group structure guarantees that polarized light gets into after the prism group in the light path; Only need through an exiting surface, a polaroid and an incidence surface, for improve the contrast specialized designs bright dipping go into optical position; Need not that extra process invalidly goes out, incidence surface; Clearance etc., solving prism increases the problem that the back luminous energy descends, and the efficiency of light energy utilization has been improved 40%; Behind the monolithic prism, only add a novel Amici prism and just can accomplish the light path adjustment, close the light function, reduced the resetting difficulty of polygon prism structure.The monolithic polarization splitting prism further improves prism structure as the core beam splitter of reflective projection LCD system on silicon light engine, adopts the plated film mode to substitute the polaroid element; Define polarized light purification mode, in whole prism structure, do not have/incidence surface; Adopt single special prism structure to accomplish beam split; Purify and close the light function, further light utilization efficiency has been improved 20%, resetting difficulty has reduced by 50%.Fundamentally solve the inconsistent problem of contrast in the light path.
Description of drawings
Fig. 1 is novel polarization splitting prism reflection projection LCD system on silicon index path;
Fig. 2 is the structural drawing of novel polarization splitting prism in the above-mentioned reflection projection LCD system on silicon;
Fig. 3 is the novel polarization splitting prism reflection of planar structure projection LCD system on silicon many group of pictures displaying principle simultaneously;
Fig. 4 is the novel polarization splitting prism reflection of vertical structure projection LCD system on silicon many group of pictures displaying principle simultaneously.
1 light source among the figure; 2 collimations are spared optical module; 3 square polarization splitting prisms; 4 hexagon L type prisms; 5,6 polaroids; 7,8 reflective liquid crystal over silicon; 9 image-forming modules; 10,11 little triangular prisms; 12,13 big triangular prisms; 14,15,16 polarizing coatings; 17,18,19 light sources, the even light of collimation, branch actinic light and image load module; 20 light-combining prisms.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Referring to Fig. 1, new type double polarization splitting prism reflection projection LCD system on silicon light path includes light source 1, and collimation is spared optical module 2; Square polarization splitting prism 3, hexagon L type prism 4, P vibrate to polaroid 5; S vibrates to polaroid 6, reflective liquid crystal over silicon 7,8 and image-forming module 9; The even optical module 2 of said collimation is positioned on the emitting light path of light source 1; Said square polarization splitting prism 3 is positioned on the light path after the even optical module 2 of collimation; Said P vibration is behind the transmission exit facet of polaroid 5 at square polarization splitting prism 3; Said S vibration is behind the reflection exit facet of polaroid 6 at square polarization splitting prism 3; Said hexagon L type prism 4 is positioned at after the square polarization splitting prism 3, and said reflective liquid crystal over silicon 7,8 is positioned at the first time of hexagon L type prism 4 after the emergent light, and image-forming module 9 is positioned at after the secondary emitting light path of hexagon L type prism 4.
New type double polarization splitting prism reflection projection LCD system on silicon light path realizes through following mode: the visible light that light source 1 sends is divided into direction of vibration P, the S polarized light of 90 degree each other through the even optical module 2 of collimation through square polarization splitting prism 3.Because the restriction of polarization splitting prism coating process, two bundle polarized lights are partial poolarized lights, rather than pure P light or pure S light.Vibrate behind polaroid 5 through P from the partial poolarized light of polarization splitting prism 3 transmission plane outgoing; Obtain the higher P polarized light of purity; Vibrate behind polaroid 6 through S from the partial poolarized light of polarization splitting prism 3 reflecting surface outgoing; Obtain the higher S polarized light of purity, after polaroid 5,6 improves the contrast of polarized light, get into hexagon L type prism 4.Wherein, S light is reflexed on the reflective liquid crystal over silicon 7 by the prism polarizing coating.Following in working order when reflective liquid crystal over silicon 7, the S polarization state changes, and becomes P light, and after the reflection, gets into hexagon L type prism 4 for the second time, and P light penetrates hexagon L type prism 4, gets into image-forming module 9 at last.On the other hand, P light is reflexed on the reflective liquid crystal over silicon 8 by the prism polarizing coating.Following in working order when reflective liquid crystal over silicon 8, the P polarization state changes, and becomes S light; And after the reflection, getting into hexagon L type prism 4 for the second time, S light is through 4 liang of secondary reflections of hexagon L type prism; Get into image-forming module 9 at last; Overlap with the first bundle P light, realize the output of dual-polarization attitude digraph case, stereo projection display.
The structural drawing of dual-polarization Amici prism is as shown in Figure 2 in the above-mentioned new type double polarization splitting prism reflection projection LCD system on silicon, and this prism includes the biprism group, square polarization splitting prism 3, hexagon L type prism 4; And P vibration is to polaroid 5, and S vibrates to polaroid 6; Wherein, hexagon L type prism 4 includes little triangular prism 10,11 again, big triangular prism 12,13 and polarization beam splitter 14,15,16; The visible light beam splitting is after P, the S light, and to polaroid 5, the S vibration gets into hexagon L type prism 4 respectively to polaroid 6 through the P vibration, and therebetween, S light is through polarization beam splitter 14 reflections and transmission, the transmission of polarization beam splitter 16; P light passes through polarization beam splitter 15 reflections and transmission, the reflection of polarization beam splitter 16 respectively.
Above-mentioned novel polarization splitting prism reflection projection LCD system on silicon while many group of pictures displaying principle is like Fig. 3, shown in 4; Novel polarization splitting prism reflection projection LCD system on silicon includes light source, the even light of collimation, divides actinic light and image to load module 17,18,19, light-combining prism 20 and image-forming module 9.Embodiment, light source are the RGB three-color light source, each module 17,18,19 corresponding monochromatic source, and the monochrome reflection liquid crystal over silicon sequential control in conjunction with 180Hz realizes monochromatic three width of cloth image time-divisions output.Three corresponding tri-color beams of module incide 20 3 sides of light-combining prism respectively, realize that through light-combining prism 20 3 looks synthetic, the stereo display of three groups of 60Hz pictures.The same, use 240Hz or more the monochrome reflection liquid crystal over silicon of high frequency carry out sequential control, can realize four groups and the stereo display of more 60Hz pictures.
More than adopt embodiment that the utility model is described.Those have only those skilled in the art to read just become after the disclosure file open-and-shut improvement and modification, still belong to the application's spirit and category.
Claims (10)
1. a polarization splitting prism reflects the liquid crystal over silicon projection optical system; It is characterized in that said projection optical system includes light source (1), the even optical module (2) of collimation, square polarization splitting prism (3), hexagon L type prism (4), polaroid (5,6), reflective liquid crystal over silicon (7,8), image-forming module (9);
Said collimation is spared optical module (2) and is positioned on the emitting light path of light source (1); Said square polarization splitting prism (3) is positioned on even optical module (2) light path afterwards of collimation; Said polaroid (5,6) is positioned at after the both sides emergent light of square polarization splitting prism (3); Said hexagon L type prism (4) is positioned at square polarization splitting prism (3) afterwards; Said reflective liquid crystal over silicon (7,8) is positioned at the first time of hexagon L type prism (4) after the emergent light, and said image-forming module (9) is positioned at after the secondary emitting light path of hexagon L type prism (4);
After the light that said light source (1) sends is spared optical module (2) through collimation; Via square polarization splitting prism (3) beam splitting, after polaroid (5,6) raising polarized light contrast, get into hexagon L type prism (4); Reflective liquid crystal over silicon (7,8) gets into this prism with hexagon L type prism (4) emergent light secondary reflection; Realize that light path adjustment and image load, two bundle polarized lights get into the imaging of image-forming module (9) back by the synthetic single beam of hexagon L type prism (4), output on the projection screen.
2. a kind of polarization splitting prism reflection liquid crystal over silicon projection optical system according to claim 1; It is characterized in that; Said hexagon L type prism (4) includes polarizing coating (14,15,16); The light that said light source (1) sends is divided into direction of vibration P, the S polarized light (5,6) of 90 degree each other through the even optical module (2) of collimation through square polarization splitting prism (3), and said P, S polarized light (5,6) are partial poolarized lights; Vibrate behind P polaroid (5) through P from the partial poolarized light of square polarization splitting prism (3) transmission plane outgoing; Obtain the higher P polarized light of purity, from the partial poolarized light of square polarization splitting prism (3) reflecting surface outgoing through the S vibration behind S polaroid (6), obtain the higher S polarized light of purity; After P, S polarized light (5,6) improve the contrast of polarized light, get into hexagon L type prism (4);
Wherein, said S polarized light (6) is reflexed on the reflective liquid crystal over silicon (7) by prism polarizing coating (14,15,16), when reflective liquid crystal over silicon (7) descends in working order; The S polarization state changes; Become P light, and after the reflection, get into hexagon L type prism (4) for the second time; Said P polarized light penetrates hexagon L type prism (4), gets into image-forming module (9) at last;
Said P polarized light (5) is reflexed on the reflective liquid crystal over silicon (8) by prism polarizing coating (14,15,16), and following in working order when reflective liquid crystal over silicon (8), the P polarization state changes; Become S light, and after the reflection, get into hexagon L type prism (4) for the second time; Said S light is through hexagon L type prism (4) two secondary reflections; Get into image-forming module (9) at last, it overlaps with the first bundle P light, realizes dual-polarization attitude digraph case output stereo projection display.
3. a kind of polarization splitting prism reflection liquid crystal over silicon projection optical system according to claim 1; It is characterized in that said hexagon L type prism (4) includes little triangular prism (10,11), big triangular prism (12,13) and polarizing coating (14,15,16); It is an integral body that said hexagon L type prism (4) includes little triangular prism (10,11), big triangular prism (12,13) and polarizing coating (14,15,16).
4. according to the said polarization splitting prism reflection of claim 3 liquid crystal over silicon projection optical system; It is characterized in that; Said little triangular prism (10,11) and big triangular prism (12,13) gummed; Wherein, cemented surface plating polarizing coating (14,15) between said little triangular prism (10,11) and the big triangular prism (12,13); Cemented surface plating polarizing coating (16) between the said big triangular prism (12,13).
5. according to the said polarization splitting prism reflection of claim 4 liquid crystal over silicon projection optical system; It is characterized in that; (3) two vertical plane emergent lights of said square polarization splitting prism are two vertical bundle polarized lights of direction of vibration; Vertical exit facet is parallel with little triangular prism (10, the 11) two sides of polaroid (5,6) and said hexagon L type prism (4); Two bundle polarized lights get into from little triangular prism (10,11) two sides respectively, pass through polarizing coating (14,15) respectively, then respectively transmission to take place at the rete place and reflect dual mode for the first time from hexagon L type prism (4) outgoing; Get into reflective liquid crystal over silicon (7,8); Get into hexagon L type prism (4) once more by reflective liquid crystal over silicon (7,8) polarization by reflection light beam then, locate close light with the reflection dual mode at polarizing coating (16) to go out to take place transmission at rete respectively, from one of them big triangular prism (12,13) outgoing.
6. according to the said polarization splitting prism reflection of claim 1 liquid crystal over silicon projection optical system; It is characterized in that; Said square polarization splitting prism (3) and polaroid (5,6) are a unitary construction, and wherein square polarization splitting prism (3) can be two little triangular prisms and forms.
7. according to the said polarization splitting prism reflection of claim 1 liquid crystal over silicon projection optical system, it is characterized in that said light source is the visible waveband light source, led light source, perhaps LASER Light Source.
8. a series of paintings polarization splitting prism more than a kind reflects the liquid crystal over silicon projection optical system; It is characterized in that; Said LCD projecting system includes light source (1), the even optical module (2) of collimation, divides actinic light and image to load module (17,18,19); Light-combining prism (20) and image-forming module (9); Said light-combining prism (20) at module (17,18,19) afterwards, three exiting surfaces of module are corresponding to (20) three incidence surfaces of light-combining prism, said image-forming module (9) is positioned at after light-combining prism (20) exiting surface;
When said light source is R/G/B independence three-color light source; Behind the light beam process module (17,18,19), the reflection liquid crystal over silicon is only controlled monochrome in the module, output monochrome image during mould splits; Three same times of module are exported the RGB image three-colo(u)r of same image; Get into light-combining prism (20) and close bundle, image output is accomplished in image-forming module (9) imaging.
9. according to Claim 8 said many a series of paintings polarization splitting prism reflection liquid crystal over silicon projection optical system; It is characterized in that when said light source (1) was R/G/B independence three-color light source, said reflective liquid crystal over silicon (7,8) controlled frequency was 180Hz; Export three groups of monochrome images during mould splits; Through closing the bundle imaging, realize three a series of paintings stereoprojections, or six a series of paintings two-dimensional projections.
10. according to Claim 8 said many a series of paintings polarization splitting prism reflection liquid crystal over silicon projection optical system; It is characterized in that when said light source (1) was R/G/B independence three-color light source, said reflective liquid crystal over silicon (7,8) controlled frequency was 240Hz; Export four groups of monochrome images during mould splits; Through closing the bundle imaging, realize four a series of paintings stereoprojections, or eight a series of paintings two-dimensional projections.
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| CN2012202277458U CN202631946U (en) | 2012-05-21 | 2012-05-21 | Liquid crystal on silicon projection optical system adopting polarized beam splitting prism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093785B (en) * | 2014-05-15 | 2017-04-12 | 豪威科技股份有限公司 | Wafer-level liquid-crystal-on-silicon projection assembly, systems and methods |
| CN111781791A (en) * | 2019-04-04 | 2020-10-16 | 深圳光峰科技股份有限公司 | Light source system and projection equipment |
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2012
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093785B (en) * | 2014-05-15 | 2017-04-12 | 豪威科技股份有限公司 | Wafer-level liquid-crystal-on-silicon projection assembly, systems and methods |
| CN111781791A (en) * | 2019-04-04 | 2020-10-16 | 深圳光峰科技股份有限公司 | Light source system and projection equipment |
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