CN101206391A - Color-separation color-combination device for superelevation lightness digital cineprojector - Google Patents
Color-separation color-combination device for superelevation lightness digital cineprojector Download PDFInfo
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- CN101206391A CN101206391A CNA2007101648308A CN200710164830A CN101206391A CN 101206391 A CN101206391 A CN 101206391A CN A2007101648308 A CNA2007101648308 A CN A2007101648308A CN 200710164830 A CN200710164830 A CN 200710164830A CN 101206391 A CN101206391 A CN 101206391A
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Abstract
The invention discloses a color separation and color recombination apparatus of a super high brightness digital cinematograph. After the white light is reflected by a first totally internal reflection prism and passes a second totally internal reflection prism, a Philip compensating prism, a first air gap of the Philip compensating prism and a Philip red reflecting prism in sequence, the white light is divided into a beam of red light and a beam of blue green light by a red reflecting and blue-green penetrating color separation and color recombination film, wherein a beam of red light reflected reaches a red light path image chip after being totally reflected via the first air gap of the Philip prism, the other beam of blue-green light penetrated is divided into a beam of blue light and a beam of green light by a blue reflecting and green penetrating color separation and color recombination film through a Philip blue reflecting prism, wherein the beam of blue light reaches a blue light path image chip after being totally reflected via the second air gap of the Philip prism and the other beam of green light penetrated reaches a green light path image chip via a Philip green penetrating prism. The invention can be used for a cinematograph, the lightness of which is up to eight thousand to twenty-five thousand lumen. The invention can avoid the deterioration of image quality of the apparatus for high heat, and even the danger to damage the apparatus.
Description
Technical field
The present invention relates to the color-separation and color-recombination device, relate in particular to a kind of color-separation and color-recombination device of super brightness d-cinema projectors.
Background technology
The d-cinema projectors of jumbotron, super brightness has following important characteristic: at first, because brightness is up to 8000-25000 lumen (7kW, 25000 lumens; 3kW, 15000 lumens; 1.25kW, 8000 lumens), thereby the jumbotron projection that can realize shielding wide 5-25 rice.Secondly, can various digital signals of treatment conversion and simulating signal, the various types of programs that audio-visual devices such as plug into easily computer, DVD and TV station play can find the program that needs on the internet immediately.At last, utilize digital synthesis technology to realize 3D or stereopsis projection easily.Because these characteristics have been crossed over all constraints of film movie production and application greatly, therefore favored at first at the cinema, and demonstrated great application prospect in fields such as large-scale terminal display system, intelligent command system, military affairs, education, commercial affairs.
Because super brightness causes the color-separation and color-recombination device seriously to generate heat, and be controlled at the working temperature of color-separation and color-recombination device below 70 ℃, difficulty is high, and heat radiation becomes first difficult problem.Because heat problem, projector all adopts the DMD image source based on MEMS at present, and can not use liquid crystal board.And the color-separation and color-recombination device in the ray machine also must bear the high heat of high energy, so the present invention adopts the total internal reflection prism system to add the Fei Lipu prism system, as shown in Figure 1.
The present invention is a thermal characteristics of improving the color-separation and color-recombination device, has following feature: all prisms all use K9 or the Xiao Te BK7 glass that thermal behavior is good, chemical property is stable.Counter on the prism is popular in blue green and anti-orchid and reveals the green two kinds of color-separation and color-recombination films employing Ta2O5, Nb2O5 or TiO2 as high refractive index film, Al2O3 is as low refractive index film, because the thermal conductivity of Al2O3 is higher more than 10 times than SiO2, thereby improved the thermal conductivity of color-separation and color-recombination film, not only reduced the deterioration of image quality that high heat causes the optical surface distortion to bring, even cause prism to break, and angular effect and polarization effect have been reduced.All prism boundary all are set to air-gap, and without any gummed surface, glue-line lost efficacy when preventing high temperature.And heating radiator has been installed at the higher non-logical light position of prism temperature.All color-separation and color-recombination films when temperature when room temperature changes to 80 ℃, be 50% pairing wavelength to transmissivity, it drifts about less than 1nm, image color is stable when having guaranteed that temperature raises.The air-gap of all prism boundary is spaced apart 20 microns～40 microns, causes air-gap too small because of glass swelling when preventing high temperature, and internal reflection was lost efficacy.
Summary of the invention
To the objective of the invention is in order addressing the above problem, a kind of color-separation and color-recombination device of super brightness d-cinema projectors to be provided.
The color-separation and color-recombination device that is used for the super brightness d-cinema projectors, white light passes total internal reflection second prism after by the total internal reflection first prism total reflection successively, the Fei Lipu compensating prism, Fei Lipu prism first air-gap, behind the anti-red prism of Fei Lipu, instead be popular in blue green color-separation and color-recombination film white light is divided into red and blue green two-beam, wherein the ruddiness of a branch of reflection is through the first air-gap total reflection of Fei Lipu prism, arrive ruddiness road image chip, blue green glow of another bundle transmission passes the anti-blue prism of Fei Lipu and is divided into blue green two-beam again by the anti-orchid color-separation and color-recombination film that reveals the green, wherein the blue streak of a branch of reflection is through the second air-gap total reflection of Fei Lipu prism, arrive blue streak road image chip, the green glow of another bundle transmission arrives green light path image chip through the Fei Lipu prism that reveals the green.
The material of described prism is K9 or Xiao Te BK7 glass.Anti-blue green color-separation and color-recombination film, the anti-orchid color-separation and color-recombination film that reveals the green that is popular in adopts Ta2O5, Nb2O5 or TiO2 as high refractive index film, and Al2O3 is as low refractive index film.The non-logical light of prism position is provided with heating radiator.The air-gap of prism boundary is spaced apart 20 microns～40 microns.
Color-separation and color-recombination device provided by the invention comprises a total internal reflection prism system and Fei Lipu prism system.All prisms all use K9 or the Xiao Te BK7 glass that thermal behavior is good, chemical property is stable, and conventional prism is according to the optional different glass of request for utilization.Counter on the prism is popular in blue green and anti-orchid and reveals the green two kinds of color-separation and color-recombination films employing Ta2O5, Nb2O5 or TiO2 as high refractive index film, Al2O3 is as low refractive index film, and conventional color-separation and color-recombination film uses SiO2 as low refractive index film, because the thermal conductivity of Al2O3 is higher more than 10 times than SiO2, thereby improved the thermal conductivity of color-separation and color-recombination film, the whole film surface temperature difference is reduced, thereby not only reduced the deterioration of image quality that high heat causes the optical surface distortion to bring, even cause prism to break, and angular effect and polarization effect have been reduced.All prism boundary all are air-gap, and without any gummed surface, glue-line lost efficacy when preventing high temperature, and conventional Fei Lipu prism is existing air-gap, and the gummed surface is arranged again.Prism of the present invention has been installed heating radiator at the higher non-logical light position of temperature, and conventional Fei Lipu prism is not need heating radiator.All color-separation and color-recombination films when temperature when room temperature changes to 80 ℃, be 50% pairing wavelength to transmissivity, it drifts about less than 1nm, image color is stable when having guaranteed that temperature raises, and the drift of conventional color-separation and color-recombination film can reach about 20nm greatly.At last, the air-gap at all interfaces of Fei Lipu prism of the present invention is spaced apart 20 microns～40 microns, causes air-gap too small because of glass swelling when preventing high temperature, and internal reflection was lost efficacy, and conventional air-gap thickness is about 10 microns.
Color-separation and color-recombination device of the present invention can be used for the d-cinema projectors of brightness up to 25000 lumens, still can keep good image quality during work.
Description of drawings
Fig. 1 is the color-separation and color-recombination device structural representation that is used for the super brightness d-cinema projectors; Among the figure: total internal reflection first prism 1, total internal reflection second prism 2, Fei Lipu compensating prism 3, the anti-red prism 4 of Fei Lipu, the anti-blue prism 5 of Fei Lipu, Fei Lipu reveal the green prism 6, total internal reflection air-gap 7, Fei Lipu prism first air-gap 8, Fei Lipu prism second air-gap 9, Fei Lipu prism the 3rd air-gap 10, anti-blue green color-separation and color-recombination film 11, anti-orchid reveal the green color-separation and color-recombination film 12, ruddiness road image chip 13, the blue streak road image chip of being popular in
14, green light path image chip 15;
Fig. 2 is a heat spreader structures synoptic diagram of the present invention; Among the figure: first heating radiator 16, second heating radiator 17, the 3rd heating radiator 18;
Fig. 3 (a) is total internal reflection of the present invention+Fei Lipu system color-separation and color-recombination device structural representation;
Fig. 3 (b) is a conventional Fei Lipu system color-separation and color-recombination prism structure synoptic diagram;
Fig. 4 be color-separation and color-recombination film of the present invention under 80 ℃ of temperature spectral characteristic and the comparison diagram of room temperature.
Embodiment
As shown in Figure 1, the color-separation and color-recombination device that is used for the super brightness d-cinema projectors, it is characterized in that passing total internal reflection second prism 2 successively after white light is by 1 total reflection of total internal reflection first prism, Fei Lipu compensating prism 3, Fei Lipu prism first air-gap 8, behind the anti-red prism 4 of Fei Lipu, instead be popular in blue green color-separation and color-recombination film 11 white light is divided into red and blue green two-beam, wherein the ruddiness of a branch of reflection is through 8 total reflections of Fei Lipu prism first air-gap, arrive ruddiness road image chip 13, blue green glow of another bundle transmission passes the anti-blue prism 5 of Fei Lipu and is divided into blue green two-beam again by the anti-orchid color-separation and color-recombination film 12 that reveals the green, wherein the blue streak of a branch of reflection is through 9 total reflections of Fei Lipu prism second air-gap, arrive blue streak road image chip 14, the green glow of another bundle transmission arrives green light path image chip 15 through the Fei Lipu prism 6 that reveals the green.Combined color image after the former road of red, blue, green three primary colours light after ruddiness road image chip 13, blue streak road image chip 14,15 modulation of green light path image chip is returned passes total internal reflection first prism 1, total internal reflection second prism 2 projects on the screen.
The material of described prism is K9 or Xiao Te BK7 glass.Anti-blue green color-separation and color-recombination film 11, the anti-orchid color-separation and color-recombination film 12 that reveals the green that is popular in adopts Ta2O5, Nb2O5 or TiO2 as high refractive index film, and Al2O3 is as low refractive index film.The non-logical light of prism position is provided with heating radiator.The air-gap of prism boundary is spaced apart 20 microns～40 microns.
As shown in Figure 2, Fei Lipu prism of the present invention has been settled first heating radiator 16, second heating radiator 17, the 3rd heating radiator 18 on the higher non-logical optical position of temperature.The position that the color-separation and color-recombination film temperature is the highest is logical optical position, but logical optical position can't be installed heating radiator because of the reason that heating radiator is in the light, so can only be placed in heating radiator on time hot spot.So how reduce the temperature at maximum temperature position? the present invention adopts the very high Al2O3 film of thermal conductivity, makes the heat at maximum temperature position be diffused into whole face rapidly, is diffused in the air rapidly by three heating radiators then.
Fig. 3 is the comparison of total internal reflection of the present invention and Fei Lipu color-separation and color-recombination prism and conventional Fei Lipu color-separation and color-recombination prism.Not only temperature is very high because on the prism 1-6, and temperature distributing disproportionation is even, so if the glass heat poor performance, even adopt the low-index material of the Al2O3 film of above-mentioned high heat conductance as color-separation and color-recombination film system, still glass breakage can be caused, K9 or BK7 must be selected for use for this reason.All prism boundary of the present invention are air-gap all, comprise total internal reflection prism air-gap 7 and Fei Lipu prism air- gap 8,9,10, and native system can not have any gummed surface, and glue-line lost efficacy when preventing high temperature.And conventional Fei Lipu prism is existing air-gap, and the gummed surface is arranged again, and particularly air-gap 10 glues together.To the air- gap 8,9,10 of total internal reflection prism air-gap 7 of the present invention and Fei Lipu prism, its airspace is 30 microns ± 10 microns, causes air-gap too small because of glass swelling when preventing high temperature, and internal reflection was lost efficacy.And the air-gap thickness of conventional total internal reflection prism and Fei Lipu prism is about 10 microns.
Shown in Figure 4 is the curve of spectrum drift that Fei Lipu prism color-separation and color- recombination film 11,12 of the present invention is measured under 80 ℃ of temperature.To all color-separation and color- recombination films 11 and 12, when temperature when room temperature changes to 80 ℃, be 50% pairing wavelength to transmissivity, it drifts about all less than 1nm, this has just guaranteed that the projector temperature still can keep image color stable when raising.And the drift of conventional color-separation and color-recombination film can reach greatly about 20nm, and this can produce serious aberration in the very big system of this temperature variation, thereby can not use.
Claims (5)
1. the color-separation and color-recombination device of a super brightness d-cinema projectors, it is characterized in that passing total internal reflection second prism (2) successively after white light is by total internal reflection first prism (1) total reflection, Fei Lipu compensating prism (3), Fei Lipu prism first air-gap (8), behind the anti-red prism of Fei Lipu (4), the anti-blue green color-separation and color-recombination film (11) that is popular in is divided into red and blue green two-beam to white light, wherein the ruddiness of a branch of reflection is through Fei Lipu prism first air-gap (8) total reflection, arrive ruddiness road image chip (13), blue green glow of another bundle transmission passes the anti-blue prism of Fei Lipu (5) and is divided into blue green two-beam again by the anti-orchid color-separation and color-recombination film (12) that reveals the green, wherein the blue streak of a branch of reflection is through Fei Lipu prism second air-gap (9) total reflection, arrive blue streak road image chip (14), the green glow of another bundle transmission arrives green light path image chip (15) through the Fei Lipu prism (6) that reveals the green.
2. the color-separation and color-recombination device of a kind of super brightness d-cinema projectors according to claim 1, the material that it is characterized in that described prism are K9 or Xiao Te BK7 glass.
3. the color-separation and color-recombination device of a kind of super brightness d-cinema projectors according to claim 1, it is characterized in that described anti-blue green color-separation and color-recombination film (11), the anti-orchid color-separation and color-recombination film (12) that reveals the green that is popular in adopts Ta2O5, Nb2O5 or TiO2 as high refractive index film, Al2O3 is as low refractive index film.
4. the color-separation and color-recombination device of a kind of super brightness d-cinema projectors according to claim 1 is characterized in that the non-logical light of described prism position is provided with heating radiator.
5. the color-separation and color-recombination device of a kind of super brightness d-cinema projectors of branch according to claim 1 is characterized in that the air-gap of described prism boundary is spaced apart 20 microns～40 microns.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101648308A CN101206391A (en) | 2007-12-25 | 2007-12-25 | Color-separation color-combination device for superelevation lightness digital cineprojector |
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| CNA2007101648308A CN101206391A (en) | 2007-12-25 | 2007-12-25 | Color-separation color-combination device for superelevation lightness digital cineprojector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950086A (en) * | 2010-09-07 | 2011-01-19 | 杭州科汀光学技术有限公司 | Polarization color separation and combination device with low polarization aberration |
| CN103630955A (en) * | 2012-08-27 | 2014-03-12 | 柯尼卡美能达株式会社 | Projection type display apparatus |
| CN104834024A (en) * | 2015-05-15 | 2015-08-12 | 杭州科汀光学技术有限公司 | Double-elimination short-wave pass film system and color separation and color combination device |
| CN111538114A (en) * | 2019-02-06 | 2020-08-14 | 浜松光子学株式会社 | Optical element |
| WO2021129499A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳光峰科技股份有限公司 | Prism apparatus and projection device |
| JP7478994B2 (en) | 2020-03-11 | 2024-05-08 | パナソニックＩｐマネジメント株式会社 | Projection type image display device |
-
2007
- 2007-12-25 CN CNA2007101648308A patent/CN101206391A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950086A (en) * | 2010-09-07 | 2011-01-19 | 杭州科汀光学技术有限公司 | Polarization color separation and combination device with low polarization aberration |
| CN103630955A (en) * | 2012-08-27 | 2014-03-12 | 柯尼卡美能达株式会社 | Projection type display apparatus |
| CN103630955B (en) * | 2012-08-27 | 2016-09-07 | 柯尼卡美能达株式会社 | Projection type image display apparatus |
| CN104834024A (en) * | 2015-05-15 | 2015-08-12 | 杭州科汀光学技术有限公司 | Double-elimination short-wave pass film system and color separation and color combination device |
| CN104834024B (en) * | 2015-05-15 | 2016-06-22 | 杭州科汀光学技术有限公司 | A kind of double; two disappear short-pass film system and color-separation and color-recombination device |
| CN111538114A (en) * | 2019-02-06 | 2020-08-14 | 浜松光子学株式会社 | Optical element |
| CN111538114B (en) * | 2019-02-06 | 2023-08-29 | 浜松光子学株式会社 | Optical element |
| WO2021129499A1 (en) * | 2019-12-23 | 2021-07-01 | 深圳光峰科技股份有限公司 | Prism apparatus and projection device |
| JP7478994B2 (en) | 2020-03-11 | 2024-05-08 | パナソニックＩｐマネジメント株式会社 | Projection type image display device |
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