CN1932581A - Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS - Google Patents
Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS Download PDFInfo
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- CN1932581A CN1932581A CN 200510102670 CN200510102670A CN1932581A CN 1932581 A CN1932581 A CN 1932581A CN 200510102670 CN200510102670 CN 200510102670 CN 200510102670 A CN200510102670 A CN 200510102670A CN 1932581 A CN1932581 A CN 1932581A
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Abstract
The invention is the optical projection system which integrates the color filtering sheet in the LCOS. Three are three projection systems including the one front panel projection system of the signal light source, the double front panels projection system of the signal light source and the double front panels projection system of double light sources. The three systems are all composed of the CF-LCOS front panel and the subsidiary optical apparatus. In addition, they can project the image in the LCOS into the large-screen, so it can simplify the optical projection system.
Description
Technical field
The present invention is the optical projection system that adopts the little demonstration of silicon plate liquid crystal LCOS, refers in particular to the optical projection system of employing integrated color filer (CF-LCOS) on the little demonstration of silicon plate liquid crystal LCOS.
Background technology
The little display technique of LCOS is to adopt transparent glass substrate and silicon chip base plate to constitute liquid crystal display jointly.The silicon chip base plate comprises the base plate of active driving, and a series of pixels are arranged, and each has the metal eyeglass of folded light beam above the pixel.Integrated circuit and pixel transistor can be fabricated on the silicon plate to control the voltage at LCOS pixel liquid crystal two ends.Little being presented under this pattern of LCOS moved: the voltage of control by the liquid crystal two ends is with the polarization state of control liquid crystal, the brightness of the light that passes through with change.Therefore, the pixel demonstration can generate arbitrary image by the voltage of controlling each pixel two ends.
Adopt some designs of LCOS optical projection system to exist, existing LCOS optical projection system can be divided into two big kinds: 3 panel systems and 1 panel system.They make us dissatisfied part.In 3 panel systems, incident light is divided into three kinds of main colors of red, green, blue.After 3 panel systems formed image, image was by synthetic by optical instrument again.Optical system is very complicated and expensive.And the light that comes out from 3 panel systems overlaps to form image in pixel, and its manufacturing process is very complicated.
In 1 panel system, cut apart by the time and to form full color.In time division system, input full color images signal at first is broken down into RGB three number of sub images signals, and stores.The image that three number of sub images signal systems are come out shows on the LCOS panel in the mode of up time, i.e. on the time, and the image of LCOS panel meeting red green and blue etc.Simultaneously, incident light is filtered into to RGB light and is radiated on the LCOS panel.The RGB image successively is projected on the display screen, and by fast projection, human eye can be seen complete full-color image.It can high-speed transitions be RGB light that this method requires light source, and input picture also will be very fast in addition resolves into RGB three number of sub images signals.Therefore, whole system is very complicated, and the service efficiency of light is very low.In a word, existing 3 panel systems and 1 panel system all have problems at present.
Summary of the invention
The present invention is in order to overcome above problem, adopts integrated color filer on the LCOS pixel, and color filer is to be made by the absorbability dye film, adopts microelectric technique that red bluish-green color is integrated on the pixel, and we are referred to as the CF-LCOS panel.This CF-LCOS panel will be simplified optical projection system greatly.The present invention has disclosed three kinds of optical projection systems, is respectively the dual platen optical projection system of a panel optical projection system, single light source dual platen optical projection system and two light sources of single light source.These three kinds of optical projection systems have a common ground: all adopted the CF-LCOS panel.
Optical projection system of the present invention is made of CF-LCOS panel and auxiliary optical device, can be with the image projection on the LCOS micro display chip to giant-screen.In the present invention, the little demonstration of LCOS directly is integrated into the micro color filter plate on the pixel.
Therefore, an object of the present invention is to provide an a kind of panel optical projection system of single light source, it is to realize by following scheme:
An a kind of panel optical projection system of single light source, it comprises:
A white light source;
A polarised light splitter (PBS) is with the reflection S polarized light with through the P-polarized light;
A little demonstration of silicon plate liquid crystal (CF-LCOS), above the chromatic colour filter plate, directly be integrated in the little demonstration of silicon plate liquid crystal;
A projection prism.
Another object of the present invention provides a kind of dual platen optical projection system of single light source, and it is to realize by following scheme:
A kind of dual platen optical projection system of single light source, it comprises:
A white light source;
One cover mechanism becomes polarized light with white light conversion;
A polarization interference filter plate (PIF), this polarization interference filter plate (PIF) can be the green glow polarization direction
Change 90 degree, and do not change the polarization direction of other light;
A polarised light splitter (PBS) is with the reflection S polarized light with through the P-polarized light;
Two little demonstrations of silicon plate liquid crystal (LCOS), one of them chromatic colour filter plate directly is integrated in silicon plate liquid
In brilliant little demonstration (CF-LCOS);
A projection prism.
A further object of the present invention provides the dual platen optical projection system of a kind of pair of light source, and it is to realize by following scheme:
The dual platen optical projection system of a kind of pair of light source, it comprises:
A light source mainly provides green glow;
A light source mainly provides ruddiness and blue light;
Two polarised light splitters (PBS) are with the reflection S polarized light with through the P-polarized light;
Two little demonstrations of silicon plate liquid crystal (LCOS), one of them chromatic colour filter plate directly are integrated in the little demonstration of silicon plate liquid crystal (CF-LCOS);
A filter plate, this filter plate can reflect green light and seen through ruddiness and blue light, and be perhaps opposite;
A projection prism.
Below describe the present invention in detail:
In a panel optical projection system of single light source, has only a CF-LCOS panel, integrated red, green, blue three color micro filter plates.Red, green, blue marks respectively with R, G, B, and its wavelength is determined according to the standard of red, green, blue three looks of common human eye.Projection optical system comprises white light source, Polarization converter, light-collecting lens, polarised light splitter (PBS), CF-LCOS panel, improve the polaroid and the projection prism of contrast, the effect of polarised light splitter (PBS) is that P-polarized light and S polarized light are separated, normally the P-polarized light is through, and S polarized light is reflected.
The white light source that uses in a panel optical projection system of single light source of the present invention such as bulb or be arranged in the light emitting diode that emits white light of matrix, is used for illuminating the CF-LCOS panel.A kind of scheme is that the light that light source sends is converted to a kind of polarized light, as the S polarized light.Can be with optical device beam uniformity.The S polarized light is polarized light optical splitter (PBS) and reflexes on the CF-LCOS panel, contains the color filer of RGB on the panel.The voltage that depends on the CF-LCOS pixel from the polarized state of light of CF-LCOS reflection.The P polarized light is passed through by PBS, is transferred to the projection prism, is projected on the display screen.Can increase the polaroid of a filtration, improve the contrast of output with transmission P polarized light.
In the dual platen optical projection system of single light source of the present invention, there are two LCOS panels to be used.One is the CF-LCOS panel, and another is common LCOS panel, does not have the colour transition filter disc above.For the dual platen optical projection system of single light source, must resolve into the two-beam line to light source with polarization interference filter plate (PIF), a branch of is green glow, a branch ofly in addition is made up of ruddiness and blue light.The principle of work of polarization interference filter plate (PIF) is the polarization angle of a certain color of light to be revolved turn 90 degrees, and does not influence other color of light.For example, the dried filter plate of green glow polarization (PIF) can be rotated the polarization angle of green glow, and does not influence ruddiness and blue light.Behind polarised light splitter (PBS), green glow and red blue light are separated into two-beam.
In the dual platen optical projection system of single light source, white light source is converted into a kind of polarized light earlier, as the S polarized light.A green glow polarization interference filter plate (PIF) converts green glow to P type polarized light.By polarised light splitter (PBS), green glow is passed through as P type polarized light, and ruddiness and blue light are reflected on the CF-LCOS panel as S type polarized light.The miniature filter plate that red (R) and blue (B) arranged on this CF-LCOS panel is used for modulated red light and blue light.A branch of in addition green glow is not then had the LCOS modulation panel of color filer.A common green glow filter plate can be used to improve the purity of green glow.By same polarised light splitter (PBS), the green glow after the modulation is as the transmission of S type polarized light, and ruddiness and blue light become the transmission of P type polarized light, so the LCOS projector has red bluish-green image three-colo(u)r.At output point, can convert green glow to P type polarized light once more with a green glow polarization interference filter plate (PIF).This green glow polarization interference filter plate adds a polaroid, can be used for improving the demonstration contrast.In the dual platen optical projection system of the two light sources of the present invention, a light source is mass-tone (as a green), and the another one light source is its allochromatic colour (blue and red mixing).Two LCOS panels will be shone respectively by two different light beams.The CF-LCOS panel is had red and blue miniature filter plate by red blue light illumination on this CF-LCOS panel, be used for modulated red light and blue light.The another one light path is common LCOS optical system, shines with green glow.A filter plate is used for the light that two LCOS panels come out is integrated, and projects on the display screen by prism.This filter plate can reflect green light and is seen through ruddiness and blue light.
Two sub-optical projection systems are arranged in the dual platen optical projection system of of the present invention pair of light source,, two different light sources and different LCOS panels are arranged for ruddiness adds blu-ray system and green glow system.For the green glow system, there is not chromatic filter on the LCOS panel.For ruddiness and blu-ray system, light source and LCOS panel all have two kinds of colors.An optical filter is used to the light of two system's outputs is integrated, and projects to then on the display screen and (does not draw among the figure).This filter plate can reflect green light and is seen through ruddiness and blue light, is a kind of traditional multilayered interference film filter plate.The light beam that comes out from two LCOS panels must be onesize, to guarantee that a good doubling of the image is on display screen.
The main reflecting surface of the polarised light splitter of being mentioned in three kinds of optical projection systems of the present invention (PBS) has 45 degree incident angles.
Description of drawings
Fig. 1: a panel optical projection system of single light source
1. white light source 2. Polarization converters+light-collecting lens 3. polarised light splitters (PBS) 4.CF-LCOS panel 5. polaroids 6. projection prisms
Fig. 2: the dual platen optical projection system of single light source
1. 4. 9. polaroid 10. projection prisms of polarised light splitter (PBS) 5.CF-LCOS (R+B) panel 6.LCOS panel 7. green glow filter plates 8. green glow polarization interference filter plates (PI F) of white light source 2. Polarization converters+light-collecting lens 3. green glow polarization interference filter plates (PIF)
Fig. 3: the dual platen optical projection system of two light sources
1. green-light source .2. Polarization converter+light-collecting lens 3. polarised light splitters (PBS) 4.LCOS panel 5. polaroids, 6. blue lights and red-light source 7. Polarization converters+light-collecting lens 8. polarised light splitters (PBS) 9.CF-LCOS (B+R) panel 10. polaroids 11. reflection type color filter plates 12. projection prisms
Embodiment
Embodiment 1
A panel optical projection system of 1 instruction book light source in conjunction with the accompanying drawings:
White light source (1), such as bulb or arc lamp or be arranged in the light emitting diode that emits white light of matrix, the light that light source is sent by Polarization converter+light-collecting lens (2) converts a kind of polarized light to, as the S polarized light.The S polarized light is polarized light optical splitter (PBS) (3) and reflexes on the CF-LCOS panel (4), contains the color filer of RGB on this panel.The voltage that depends on the CF-LCOS panel pixel from the polarized state of light of CF-LCOS panel reflection.The P polarized light is polarized light optical splitter (PBS) (3) to be passed through, and by the polaroid (5) of a filtration, improves the contrast of output with transmission P polarized light again, is transferred to projection prism (6) again, is projected on the display screen.
The dual platen optical projection system of 2 instruction book light sources in conjunction with the accompanying drawings:
White light source (1), such as bulb or arc lamp or be arranged in the light emitting diode that emits white light of matrix, the light that light source is sent by Polarization converter+light-collecting lens (2) converts a kind of polarized light to, as the S polarized light.A green glow polarization interference filter plate (PIF) (3) converts green glow to P type polarized light, and ruddiness and blue light then are maintained the S polarized light.Ruddiness and blue light are polarized light optical splitter (PBS) (4) and reflex on CF-LCOS (R+B) panel (5), contain the color filer of red indigo plant on this panel.Green glow then is polarized light optical splitter (PBS) (4) and penetrates into and do not have on the LCOS of the chromatic filter panel (6).A common green glow filter plate (7) can be placed on the preceding purity that is used for improving green glow of LCOS panel (6).From CF-LCOS (R+B) panel (5) with depend on the voltage of CF-LCOS (R+B) panel (5) and LCOS panel (6) pixel from the polarized state of light of LCOS panel (6) reflection.Pass through for the P polarized light is polarized light optical splitter (PBS) (4) from the ruddiness and the blue light of CF-LCOS (R+B) panel (5) reflection.Be polarized light optical splitter (4) reflection from the green glow of LCOS panel (6) reflection for the S polarized light.The twice light beam is overlapping.At output point, green glow is converted to P type polarized light once more with a green glow polarization interference filter plate (PIF) (8).By the polaroid (9) of a filtration, improve the contrast of output again, be transferred to projection prism (10) again, be projected on the display screen with transmission P polarized light.
The dual platen optical projection system of the two light sources of 3 explanations in conjunction with the accompanying drawings:
Two sub-optical projection systems are arranged among the embodiment 3, be respectively ruddiness and add blu-ray system and green glow system.The green glow subsystem has green-light source (1), and such as bulb or arc lamp or be arranged in the light emitting diode of the green light of matrix, the light that light source is sent by Polarization converter+light-collecting lens (2) converts a kind of polarized light to, as the S polarized light.The S polarized light is polarized light optical splitter (PBS) (3) and reflexes on the LCOS panel (4), does not contain color filer on this panel.From the light of LCOS panel (4) reflection is the P polarized light, and the P polarized light is polarized light optical splitter (PBS) (3) to be passed through, and by the polaroid (5) of a filtration, improves the contrast of output with transmission P polarized light again.There are ruddiness and blue light source (6) in ruddiness and blue photons system, such as bulb or arc lamp or be arranged in glowing and the light emitting diode of blue light-emitting of matrix, the light that light source is sent by Polarization converter+light-collecting lens (7) converts a kind of polarized light to, as the S polarized light.The S polarized light is polarized light optical splitter (PBS) (8) and reflexes on CF-LCOS (B+R) panel (9), contains blue blusher look filter plate on this panel.From the light of CF-LCOS (B+R) panel (9) reflection is the P polarized light.The P polarized light is polarized light optical splitter (PBS) (8) to be passed through, and by the polaroid (10) of a filtration, improves the contrast of output with transmission P polarized light again.The output beam of two sub-optical projection systems comes the light combination of two system's outputs is transferred to projection prism (12) again with a reflection type color filter plate (11), projects on the display screen then.This reflection type color filter plate (11) can reflect green light and is seen through ruddiness and blue light, is a kind of traditional multilayered interference film filter plate.The light beam that comes out from two LCOS panels must be onesize, to guarantee that a good doubling of the image is on display screen.
Claims (13)
1. adopt the optical projection system of integrated color filer on the little demonstration of silicon plate liquid crystal LCOS, it is characterized in that it is an a kind of panel optical projection system of single light source, comprises in this optical projection system:
A white light source;
A polarised light splitter (PBS) is with the reflection S polarized light with through the P-polarized light;
A little demonstration of silicon plate liquid crystal (CF-LCOS), above the chromatic colour filter plate, directly be integrated in the little demonstration of silicon plate liquid crystal;
A projection prism.
2. optical projection system according to claim 1 is characterized in that, also comprises Polarization converter+light-collecting lens, and the light that white light source is sent converts a kind of polarized light to.
3. optical projection system according to claim 1 and 2, its feature is that white light source is bulb or arc lamp or the light emitting diode that emits white light that is arranged in matrix.
4. optical projection system according to claim 3 is characterized in that, also comprises a polaroid, improves the contrast of output with transmission P polarized light.
5. adopt the optical projection system of integrated color filer on the little demonstration of silicon plate liquid crystal LCOS, it is characterized in that it is a kind of dual platen optical projection system of single light source, comprises in this optical projection system:
A white light source;
One cover mechanism becomes polarized light with white light conversion;
A polarization interference filter plate (PIF), this polarization interference filter plate (PIF) can change 90 degree to the green glow polarization direction, and does not change the polarization direction of other light;
A polarised light splitter (PBS) is with the reflection S polarized light with through the P-polarized light;
Two little demonstrations of silicon plate liquid crystal (LCOS), one of them chromatic colour filter plate directly are integrated in the little demonstration of silicon plate liquid crystal (CF-LCOS);
A projection prism.
6. optical projection system according to claim 5 is characterized in that, white light source is bulb or arc lamp or the light emitting diode that emits white light that is arranged in matrix.
7. according to claim 5 or 6 described optical projection systems, it is characterized in that it is Polarization converter+light-collecting lens that white light conversion is become a cover mechanism of polarized light.
8. optical projection system according to claim 7 is characterized in that, also comprises a polarization interference filter plate (PIF), and this polarization interference filter plate (PIF) can change 90 degree to the green glow polarization direction, and does not change the polarization direction of other light.
9. optical projection system according to claim 8 is characterized in that, also comprises a polaroid, improves the contrast of output with transmission P polarized light.
10. adopt the optical projection system of integrated color filer on the little demonstration of silicon plate liquid crystal LCOS, it is characterized in that it is the dual platen optical projection system of a kind of pair of light source, comprises in this optical projection system:
A light source mainly provides green glow;
A light source mainly provides ruddiness and blue light;
Two polarised light splitters (PBS) are with the reflection S polarized light with through the P-polarized light;
Two little demonstrations of silicon plate liquid crystal (LCOS), one of them chromatic colour filter plate directly are integrated in the little demonstration of silicon plate liquid crystal (CF-LCOS);
A reflection type color filter plate, this reflection type color filter plate can reflect green light and seen through ruddiness and blue light, and be perhaps opposite;
A projection prism
11. optical projection system according to claim 10 is characterized in that, the light source of green glow being provided and the light source of ruddiness and blue light is provided is bulb or arc lamp or green, red, the blue light emitting diode that is arranged in matrix.
12., it is characterized in that also comprise two Polarization converter+light-collecting lens, the light that light source is sent converts a kind of polarized light to according to claim 10 or 11 described optical projection systems.
13. optical projection system according to claim 12 is characterized in that, also comprises two polaroids, improves the contrast of output with transmission P polarized light.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101026705A CN100424544C (en) | 2005-09-13 | 2005-09-13 | Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101026705A CN100424544C (en) | 2005-09-13 | 2005-09-13 | Optical projecting system utilizing integrated colour wave filter on silicon plate liquid crystal microdisplay LCOS |
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| CN1932581A true CN1932581A (en) | 2007-03-21 |
| CN100424544C CN100424544C (en) | 2008-10-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101697036B (en) * | 2009-11-13 | 2012-05-30 | 深圳市博视创电子有限公司 | Information display system of automobile glass and imaging method thereof |
| CN103207472A (en) * | 2013-03-27 | 2013-07-17 | 北京京东方光电科技有限公司 | Display device |
| CN103543529A (en) * | 2012-07-16 | 2014-01-29 | 信泰光学(深圳)有限公司 | Projector |
| CN105093556A (en) * | 2015-08-25 | 2015-11-25 | 深圳珑璟光电技术有限公司 | Micro display light machine structure and imaging method thereof |
| CN107783307A (en) * | 2017-09-04 | 2018-03-09 | 西安中科微精光子制造科技有限公司 | Spliced optical imaging system |
| CN108254945A (en) * | 2018-01-08 | 2018-07-06 | 东南大学 | A kind of reflective super surface display part and color image display method |
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| CN1392534A (en) * | 2001-06-19 | 2003-01-22 | 邵剑心 | Silicon base liquid crystal reflective colour display system with micro optical filter array |
| US6747710B2 (en) * | 2001-12-03 | 2004-06-08 | Thomson Licensing S.A. | Light valve projector architecture |
| CN2563599Y (en) * | 2002-05-14 | 2003-07-30 | 邵剑心 | New silicon base liquid crystal color micro display device |
| CN1920623A (en) * | 2005-08-26 | 2007-02-28 | 联诚光电股份有限公司 | Reflective silicon single crystal liquid crystal panel and projection device using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101697036B (en) * | 2009-11-13 | 2012-05-30 | 深圳市博视创电子有限公司 | Information display system of automobile glass and imaging method thereof |
| CN103543529A (en) * | 2012-07-16 | 2014-01-29 | 信泰光学(深圳)有限公司 | Projector |
| CN103543529B (en) * | 2012-07-16 | 2016-05-18 | 信泰光学(深圳)有限公司 | Projector |
| CN103207472A (en) * | 2013-03-27 | 2013-07-17 | 北京京东方光电科技有限公司 | Display device |
| CN103207472B (en) * | 2013-03-27 | 2015-09-09 | 北京京东方光电科技有限公司 | Display device |
| CN105093556A (en) * | 2015-08-25 | 2015-11-25 | 深圳珑璟光电技术有限公司 | Micro display light machine structure and imaging method thereof |
| CN107783307A (en) * | 2017-09-04 | 2018-03-09 | 西安中科微精光子制造科技有限公司 | Spliced optical imaging system |
| CN108254945A (en) * | 2018-01-08 | 2018-07-06 | 东南大学 | A kind of reflective super surface display part and color image display method |
| CN108254945B (en) * | 2018-01-08 | 2021-01-26 | 东南大学 | Reflection type super-surface display device and color image display method |
| CN111338162A (en) * | 2018-12-18 | 2020-06-26 | 施轩杰 | Common image source display projection switching scheme |
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