CN201142739Y - Color separation and combination device of ultra-high brightness digital motion picture projector - Google Patents
Color separation and combination device of ultra-high brightness digital motion picture projector Download PDFInfo
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- CN201142739Y CN201142739Y CNU2007203033159U CN200720303315U CN201142739Y CN 201142739 Y CN201142739 Y CN 201142739Y CN U2007203033159 U CNU2007203033159 U CN U2007203033159U CN 200720303315 U CN200720303315 U CN 200720303315U CN 201142739 Y CN201142739 Y CN 201142739Y
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Abstract
The utility model discloses a color separation and recombination device of an extra bright digital cinematograph. The white light passes through a total internal reflection second prism, a Philip compensating prism, the first air-gap of a Philip prism and a Philip red light reflex prism after total reflection by a total internal reflection first prism. A red light reflex and blue green lights transmitting color-separation and color-recombination film divide the white light into a beam of red light and a beam of blue and green lights, wherein, one beam of the reflected red light reaches a red light image chip after being reflected by the first air-gap of the Philip prism; the other transmitting blue and green light passes through a Philip blue light reflex prism and is subdivided by a blue light reflex and green light transmitting color-separation and color-recombination film into a blue beam and a green beam, wherein, one beam of the reflected blue light reaches a blue light image chip after being reflected by the second air-gas of the Philip prism; the other transmitting green light reaches a green light image chip via a Philip green light transmitting prism. The device can be used on a cinematograph, and the illumination can reach 8000-25000 lumens. The device can prevent the image quality from deteriorating or even the danger of fracture of the parts caused by high heat.
Description
Technical field
The utility model relates to the color-separation and color-recombination device, relates 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 analog 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 utility model adopts the total internal reflection prism system to add the Fei Lipu prism system, as shown in Figure 1.
The utility model 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 hot property 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 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
The purpose of this utility model is in order to address 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 radiator.The air-gap of prism boundary is spaced apart 20 microns～40 microns.
The color-separation and color-recombination device that the utility model provides comprises a total internal reflection prism system and Fei Lipu prism system.All prisms all use K9 or the Xiao Te BK7 glass that hot property is good, chemical property is stable, and conventional prism is according to the optional different glass of instructions for use.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 utility model has been installed radiator at the higher non-logical light position of temperature, and conventional Fei Lipu prism is not need 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 utility model 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 utility model 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, blue streak road image chip 14, the green light path image chip 15 of being popular in;
Fig. 2 is a heat spreader structures schematic diagram of the present utility model; Among the figure: first radiator 16, second radiator 17, the 3rd radiator 18;
Fig. 3 (a) is total internal reflection of the present utility model+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 schematic diagram;
Fig. 4 be color-separation and color-recombination film of the present utility model 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 colors 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 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 utility model has been settled first radiator 16, second radiator 17, the 3rd 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 radiator because of the reason that radiator is in the light, so can only be placed in radiator on time hot spot.So how reduce the temperature at maximum temperature position? the utility model 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 radiators then.
Fig. 3 is the comparison of total internal reflection of the present utility model 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 utility model 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 utility model 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 utility model 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 variations in temperature, 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 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203033159U CN201142739Y (en) | 2007-12-25 | 2007-12-25 | Color separation and combination device of ultra-high brightness digital motion picture projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203033159U CN201142739Y (en) | 2007-12-25 | 2007-12-25 | Color separation and combination device of ultra-high brightness digital motion picture projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142739Y true CN201142739Y (en) | 2008-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203033159U Expired - Fee Related CN201142739Y (en) | 2007-12-25 | 2007-12-25 | Color separation and combination device of ultra-high brightness digital motion picture projector |
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| Country | Link |
|---|---|
| CN (1) | CN201142739Y (en) |
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2007
- 2007-12-25 CN CNU2007203033159U patent/CN201142739Y/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20161225 |