CN100568083C - The sheet type LCOS projection machine optical engine of three of three-color LED illumination - Google Patents
The sheet type LCOS projection machine optical engine of three of three-color LED illumination Download PDFInfo
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- CN100568083C CN100568083C CNB2007100423627A CN200710042362A CN100568083C CN 100568083 C CN100568083 C CN 100568083C CN B2007100423627 A CNB2007100423627 A CN B2007100423627A CN 200710042362 A CN200710042362 A CN 200710042362A CN 100568083 C CN100568083 C CN 100568083C
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Abstract
A kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination, the technical field of genus photoelectric display.On the basis of background technology, described light engine adopts: red, green and blue three-color LED light source replaces the UHP light source in the background technology; The illuminator that three structures of red, green and blue three coloured light are identical replaces the color separation illuminator in the background technology; Described three illuminators are arranged in a side of X-shaped color-combination prism in the mode parallel to each other of optical axis separately; Three luminescence chips of red, green and blue three-color LED are installed on the same block of heat sink.More than four technical characterictics to make described light engine have a life-span long, display image colour gamut broadness, saturation degree height, do not have ultraviolet and infrared light in the system, heat radiation is simple, and working stability is reliable, do not need light source is carried out color separation, system architecture is simple, the advantage that helps reducing cost.
Description
Technical field
The present invention relates to a kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination, belong to the technical field of photoelectric display.
Background technology
A kind of sheet type LCOS projection machine optical engine of three is arranged in the background technology, contain UHP light source, optical wand, relay lens, dichronic mirror, catoptron, the pre-polarizer, polarization splitting prism (PBS), LCOS chip, X-shaped color-combination prism and projection lens.See Fig. 1.The light that sends from the UHP light source through the even light of optical wand after, through relay lens, dichronic mirror, behind the catoptron, form red, green and blue three color light, three coloured light through the pre-polarizer separately after, its polarization state polarization splitting prism relative and separately is a S light, reflexed on separately the LCOS chip by separately polarization splitting prism during polarization splitting prism by separately, the LCOS chip is under driving circuit control, change or do not change the polarization of incident light attitude, also just by P light or S photocontrol reflected light, if S light, be reflected back toward illumination path during then through polarization splitting prism, screen display is dark attitude, if P light, then reflected light will incide on the X-shaped color-combination prism by polarization splitting prism, the X-shaped color-combination prism is with red, green, project image onto on the screen by projection lens behind the blue three color light synthesize white light, realize that the colour of image shows.
This light engine has the mission life of UHP light source short, and the display image colour gamut is narrower, system radiating complexity, the shortcoming that reliability and stability are relatively poor.
Summary of the invention
The objective of the invention is to release a kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination.
For achieving the above object, the present invention adopts following technical scheme.On the basis of background technology, described light engine adopts: red, green and blue three-color LED light source replaces the UHP light source in the background technology; The illuminator that three structures of red, green and blue three coloured light are identical replaces the color separation illuminator in the background technology; Described three illuminators are arranged in a Side of X-shaped color-combination prism in the mode parallel to each other of optical axis separately; Three luminescence chips of red, green and blue three-color LED are installed on the same block of heat sink.More than four technical characterictics to make described light engine have a life-span long, display image colour gamut broadness, saturation degree height, do not have ultraviolet and infrared light in the system, heat radiation is simple, and working stability is reliable, do not need light source is carried out color separation, system architecture is simple, the advantage that helps reducing cost.
Now describe technical scheme of the present invention in detail.
A kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination, contain the ruddiness polarization splitting prism, the green glow polarization splitting prism, the blue light polarization splitting prism, the X-shaped color-combination prism, ruddiness contrast compensation sheet, green glow contrast compensation sheet, blue light contrast compensation sheet, ruddiness LCOS chip, green glow LCOS chip, blue light LCOS chip, projection lens, the ruddiness polarization splitting prism, the green glow polarization splitting prism, the blue light polarization splitting prism becomes traditional colour cell part that closes with X-shaped color-combination prism optical coupled, ruddiness contrast compensation sheet, green glow contrast compensation sheet, blue light contrast compensation sheet, ruddiness LCOS chip, green glow LCOS chip, blue light LCOS chip, projection lens, with close the colour cell part together optical coupled become traditional LCOS image projection optical system, it is characterized in that, it also contains red-light LED, green light LED, blue-ray LED, the red illumination system, illuminated with green system and blue illumination system, red-light LED, green light LED and blue-ray LED are installed on the heat sink respectively, the red illumination system is by the ruddiness compound parabolic concentrator, the ruddiness polarization conversion reclaims assembly, ruddiness is spared the light optical wand, ruddiness plays wilfully shake Amici prism and ruddiness relay lens group composition in advance, the ruddiness compound parabolic concentrator, the ruddiness polarization conversion reclaims assembly, ruddiness is spared the light optical wand, ruddiness plays in advance wilfully shake Amici prism and ruddiness relay lens group and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the red illumination system is optical coupled with its optical axis mode and the ruddiness polarization splitting prism vertical with the plane of incidence of ruddiness polarization splitting prism, red-light LED is optical coupled with its optical axis mode and the ruddiness compound parabolic concentrator vertical with the plane of incidence of ruddiness compound parabolic concentrator, the illuminated with green system is by the green glow compound parabolic concentrator, the green glow polarization conversion reclaims assembly, green glow is spared the light optical wand, green glow plays wilfully shake Amici prism and green glow relay lens group composition in advance, the green glow compound parabolic concentrator, the green glow polarization conversion reclaims assembly, green glow is spared the light optical wand, green glow plays in advance wilfully shake Amici prism and green glow relay lens group and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the illuminated with green system is optical coupled with its optical axis mode and the green glow polarization splitting prism vertical with the plane of incidence of green glow polarization splitting prism, green light LED is optical coupled with its optical axis mode and the green glow compound parabolic concentrator vertical with the plane of incidence of green glow compound parabolic concentrator, the blue illumination system is by the blue light compound parabolic concentrator, the blue light polarization conversion reclaims assembly, blue light is spared the light optical wand, blue light plays wilfully shake Amici prism and blue light relay lens group composition in advance, the blue light compound parabolic concentrator, the blue light polarization conversion reclaims assembly, blue light is spared the light optical wand, blue light plays in advance wilfully shake Amici prism and blue light relay lens group and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the blue illumination system is optical coupled with its optical axis mode and the blue light polarization splitting prism vertical with the plane of incidence of blue light polarization splitting prism, blue-ray LED is optical coupled with its optical axis mode and the blue light compound parabolic concentrator vertical with the plane of incidence of blue light compound parabolic concentrator, and is red, green be parallel to each other with the blue illumination systematic optical axis and vertical with the optical axis of projection lens.
Technical scheme of the present invention is further characterized in that described red, green and blue lighting system is arranged in the same side of described LCOS image projection optical system.
Technical scheme of the present invention is further characterized in that red-light LED, green light LED and blue-ray LED are installed on the same block of heat sink.
Compare the advantage that the present invention has with background technology:
1, adopt led light source, the life-span of light engine is long, and the display image colour gamut is wide, and the saturation degree height does not have ultraviolet and infrared light in the system, and heat radiation is simple, and it is more reliable and more stable to work.
2, do not need light source is carried out color separation, system architecture is simple, helps reducing cost.
Description of drawings
Fig. 1 is the optical texture synoptic diagram of the sheet type LCOS projection machine optical engine of three of background technology.
Fig. 2 is the optical texture synoptic diagram of the sheet type LCOS projection machine optical engine of three of three-color LED illumination.The heat sink of not shown installation red-light LED, green light LED, blue-ray LED.
Fig. 3 be close colour cell part 7 the optical texture synoptic diagram.
Embodiment
Now describe technical scheme of the present invention and principle of work in conjunction with the accompanying drawings and embodiments in detail.
Embodiment 1
A kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination, contain ruddiness polarization splitting prism 71, green glow polarization splitting prism 72, blue light polarization splitting prism 73, X-shaped color-combination prism 74, ruddiness contrast compensation sheet 81, green glow contrast compensation sheet 82, blue light contrast compensation sheet 83, ruddiness LCOS chip 91, green glow LCOS chip 92, blue light LCOS chip 93, projection lens 10, ruddiness polarization splitting prism 71, green glow polarization splitting prism 72, blue light polarization splitting prism 73 becomes traditional colour cell part 7 that closes with X-shaped color-combination prism 74 optical coupled, ruddiness contrast compensation sheet 81, green glow contrast compensation sheet 82, blue light contrast compensation sheet 83, ruddiness LCOS chip 91, green glow LCOS chip 92, blue light LCOS chip 93, projection lens 10, with close colour cell part 7 together optical coupled become traditional LCOS image projection optical system, it is characterized in that, it also contains red-light LED 11, green light LED 12, blue-ray LED 13, the red illumination system, illuminated with green system and blue illumination system, red-light LED 11, green light LED 12 and blue-ray LED 13 are installed on the heat sink respectively, the red illumination system, the optical texture of illuminated with green system and blue illumination system is identical, the red illumination system is by ruddiness compound parabolic concentrator 21, the ruddiness polarization conversion reclaims assembly 31, ruddiness is spared light optical wand 41, ruddiness plays wilfully shake Amici prism 51 and ruddiness relay lens group 61 compositions in advance, ruddiness compound parabolic concentrator 21, the ruddiness polarization conversion reclaims assembly 31, ruddiness is spared light optical wand 41, ruddiness plays in advance wilfully shake Amici prism 51 and ruddiness relay lens group 61 and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the red illumination system is optical coupled with its optical axis mode and the ruddiness polarization splitting prism 71 vertical with the plane of incidence of ruddiness polarization splitting prism 71, red-light LED 11 is optical coupled with its optical axis mode and the ruddiness compound parabolic concentrator 21 vertical with the plane of incidence of ruddiness compound parabolic concentrator 21, the illuminated with green system is by green glow compound parabolic concentrator 22, the green glow polarization conversion reclaims assembly 32, green glow is spared light optical wand 42, green glow plays wilfully shake Amici prism 52 and green glow relay lens group 62 compositions in advance, green glow compound parabolic concentrator 22, the green glow polarization conversion reclaims assembly 32, green glow is spared light optical wand 42, green glow plays in advance wilfully shake Amici prism 52 and green glow relay lens group 62 and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the illuminated with green system is with its optical axis mode and green glow polarization splitting prism 72 optical coupled vertical with the plane of incidence of green glow polarization splitting prism 72, green light LED 12 is optical coupled with its optical axis mode and the green glow compound parabolic concentrator 22 vertical with the plane of incidence of green glow compound parabolic concentrator 22, the blue illumination system is by blue light compound parabolic concentrator 23, the blue light polarization conversion reclaims assembly 33, blue light is spared light optical wand 43, blue light plays wilfully shake Amici prism 53 and blue light relay lens group 63 compositions in advance, blue light compound parabolic concentrator 23, the blue light polarization conversion reclaims assembly 33, blue light is spared light optical wand 43, blue light plays in advance wilfully shake Amici prism 53 and blue light relay lens group 63 and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the blue illumination system is optical coupled with its optical axis mode and the blue light polarization splitting prism 73 vertical with the plane of incidence of blue light polarization splitting prism 73, blue-ray LED 13 is optical coupled with its optical axis mode and the blue light compound parabolic concentrator 23 vertical with the plane of incidence of blue light compound parabolic concentrator 23, and is red, green be parallel to each other with the blue illumination systematic optical axis and vertical with the optical axis of projection lens 10.
Embodiment 2
Except for the following differences, remainder and embodiment 1 are identical.Present embodiment is characterised in that the structure of described red, green and blue lighting system is identical.
Embodiment 3
Except for the following differences, remainder and embodiment 1 and embodiment 2 are identical.Present embodiment is characterised in that described red, green and blue lighting system is arranged in the same side of described LCOS image projection optical system.
Embodiment 4
Except for the following differences, remainder and embodiment 1, embodiment 2 and embodiment 3 are identical.Present embodiment is characterised in that red-light LED 11, green light LED 12 and blue-ray LED 13 are installed on the same block of heat sink.
Principle of work
Now the ruddiness projecting light path with embodiment 4 is an example, the principle of work of technical scheme of the present invention is described: the ruddiness that red-light LED 11 sends is collected by ruddiness compound parabolic concentrator 21 and the angle of divergence is compressed, the ruddiness that penetrates from ruddiness compound parabolic concentrator 21 enters ruddiness polarization conversion recovery assembly 31, ruddiness polarization conversion recovery assembly 31 is converted to the ejaculation of P light with the ruddiness major part of incident, enter the even light optical wand 41 of ruddiness, the even light optical wand 41 of ruddiness goes out to inject the pre-polarizer 51 of ruddiness from the exit facet of the even light optical wand 41 of ruddiness after with the ruddiness homogenising, enter ruddiness relay lens group 61 from the ruddiness of the pre-polarizer 51 exit facet outgoing of ruddiness, incide LCOS image projection system from the ruddiness of the exit facet outgoing of relay lens group 61.
In like manner, green glow incides LCOS image projection system with blue light with identical working method.
Red, after green and blue three color light passed through LCOS image projection system together, the image that LCOS is shown synthesized colour image projection to screen.
Claims (4)
1, a kind of sheet type LCOS projection machine optical engine of three of three-color LED illumination, contain ruddiness polarization splitting prism (71), green glow polarization splitting prism (72), blue light polarization splitting prism (73), X-shaped color-combination prism (74), ruddiness contrast compensation sheet (81), green glow contrast compensation sheet (82), blue light contrast compensation sheet (83), ruddiness LCOS chip (91), green glow LCOS chip (92), blue light LCOS chip (93), projection lens (10), ruddiness polarization splitting prism (71), green glow polarization splitting prism (72), blue light polarization splitting prism (73) becomes traditional colour cell part (7) that closes with X-shaped color-combination prism (74) optical coupled, ruddiness contrast compensation sheet (81), green glow contrast compensation sheet (82), blue light contrast compensation sheet (83), ruddiness LCOS chip (91), green glow LCOS chip (92), blue light LCOS chip (93), projection lens (10), with close colour cell part (7) together optical coupled become traditional LCOS image projection optical system, it is characterized in that, it also contains red-light LED (11), green light LED (12), blue-ray LED (13), the red illumination system, illuminated with green system and blue illumination system, red-light LED (11), green light LED (12) and blue-ray LED (13) are installed on the heat sink respectively, the red illumination system, the optical texture of illuminated with green system and blue illumination system is identical, the red illumination system is by ruddiness compound parabolic concentrator (21), the ruddiness polarization conversion reclaims assembly (31), ruddiness is spared light optical wand (41), ruddiness plays wilfully shake Amici prism (51) and ruddiness relay lens group (61) composition in advance, ruddiness compound parabolic concentrator (21), the ruddiness polarization conversion reclaims assembly (31), ruddiness is spared light optical wand (41), ruddiness plays in advance wilfully shake Amici prism (51) and ruddiness relay lens group (61) and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the red illumination system is optical coupled with its optical axis mode and the ruddiness polarization splitting prism (71) vertical with the plane of incidence of ruddiness polarization splitting prism (71), red-light LED (11) is optical coupled with its optical axis mode and the ruddiness compound parabolic concentrator (21) vertical with the plane of incidence of ruddiness compound parabolic concentrator (21), the illuminated with green system is by green glow compound parabolic concentrator (22), the green glow polarization conversion reclaims assembly (32), green glow is spared light optical wand (42), green glow plays wilfully shake Amici prism (52) and green glow relay lens group (62) composition in advance, green glow compound parabolic concentrator (22), the green glow polarization conversion reclaims assembly (32), green glow is spared light optical wand (42), green glow plays in advance wilfully shake Amici prism (52) and green glow relay lens group (62) and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the illuminated with green system is optical coupled with its optical axis mode and the green glow polarization splitting prism (72) vertical with the plane of incidence of green glow polarization splitting prism (72), green light LED (12) is optical coupled with its optical axis mode and the green glow compound parabolic concentrator (22) vertical with the plane of incidence of green glow compound parabolic concentrator (22), the blue illumination system is by blue light compound parabolic concentrator (23), the blue light polarization conversion reclaims assembly (33), blue light is spared light optical wand (43), blue light plays wilfully shake Amici prism (53) and blue light relay lens group (63) composition in advance, blue light compound parabolic concentrator (23), the blue light polarization conversion reclaims assembly (33), blue light is spared light optical wand (43), blue light plays in advance wilfully shake Amici prism (53) and blue light relay lens group (63) and is arranged in order in the mode of their optical axis coincidence and embarks on journey, the blue illumination system is optical coupled with its optical axis mode and the blue light polarization splitting prism (73) vertical with the plane of incidence of blue light polarization splitting prism (73), blue-ray LED (13) is optical coupled with its optical axis mode and the blue light compound parabolic concentrator (23) vertical with the plane of incidence of blue light compound parabolic concentrator (23), and is red, green be parallel to each other with the blue illumination systematic optical axis and vertical with the optical axis of projection lens (10).
2, the sheet type LCOS projection machine optical engine of three of three-color LED illumination according to claim 1 is characterized in that described red, green and blue lighting system is arranged in the same side of described LCOS image projection optical system.
3, the sheet type LCOS projection machine optical engine of three of three-color LED illumination according to claim 1 is characterized in that red-light LED (11), green light LED (12) and blue-ray LED (13) are installed on the same block of heat sink.
4, the sheet type LCOS projection machine optical engine of three of three-color LED illumination according to claim 1, it is characterized in that, described red, green and blue lighting system is arranged in the same side of described LCOS image projection optical system, and red-light LED (11), green light LED (12) and blue-ray LED (13) are installed on the same block of heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100423627A CN100568083C (en) | 2007-06-21 | 2007-06-21 | The sheet type LCOS projection machine optical engine of three of three-color LED illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100423627A CN100568083C (en) | 2007-06-21 | 2007-06-21 | The sheet type LCOS projection machine optical engine of three of three-color LED illumination |
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| Publication Number | Publication Date |
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| CN101329498A CN101329498A (en) | 2008-12-24 |
| CN100568083C true CN100568083C (en) | 2009-12-09 |
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| CNB2007100423627A Expired - Fee Related CN100568083C (en) | 2007-06-21 | 2007-06-21 | The sheet type LCOS projection machine optical engine of three of three-color LED illumination |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101963744A (en) * | 2010-09-15 | 2011-02-02 | 伍振弋 | LCOS liquid crystal projection system and device |
| CN102760419A (en) * | 2012-07-18 | 2012-10-31 | 刘纪美 | Full-color silicon-based active addressing LED micro-projection chip |
| CN110989166A (en) * | 2019-12-25 | 2020-04-10 | 歌尔股份有限公司 | Eyeball tracking system of near-to-eye display equipment and near-to-eye display equipment |
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Granted publication date: 20091209 Termination date: 20130621 |