CN100370308C - Color splitting mirror stack - Google Patents
Color splitting mirror stack Download PDFInfo
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- CN100370308C CN100370308C CNB200410048379XA CN200410048379A CN100370308C CN 100370308 C CN100370308 C CN 100370308C CN B200410048379X A CNB200410048379X A CN B200410048379XA CN 200410048379 A CN200410048379 A CN 200410048379A CN 100370308 C CN100370308 C CN 100370308C
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- deielectric
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Abstract
The present invention relates to a color dividing mirror stack, which comprises at least five layers of transparent plates and at least five layers of color dividing dielectric films, wherein the transparent plates and the color dividing dielectric films are alternately arranged, and the color dividing dielectric films are color dividing dielectric films for three primary colors of red, green and blue and are equidistantly arranged on the same axial cord in parallel from forwards to backwards according to the incidence order of a white band; the lengths of the color dividing medium films for the three primary colors are identical; the width of the second layer of color dividing dielectric film is twice that of the first layer of color dividing dielectric film, the width of the third layer of color dividing dielectric film is more than or equal to three times that of the first layer of color dividing dielectric film, the width of the fourth layer of color dividing dielectric film is more than or equal to twice that of the first layer of color dividing dielectric film, the width of the fifth layer of color dividing dielectric film is more than or equal to that of the first layer of color dividing dielectric film, and the width of the first layer of color dividing dielectric film accords with the mathematical relationship: H=L*tgA*2.
Description
Technical field
The present invention relates to a kind of Color splitting mirror stack, this Color splitting mirror stack can be separated into three kinds of color light belts arranged side by side of red, green, blue to incident white light band, and when the translation of incident white light band, red, green, blue light belt arranged side by side rolls in regular turn, realizes the scanning effect.
Background technology
Large screen display historical remote has projection type to show and kind such as plane matrix type demonstration, and present main product is the rear-projection demonstration.In various projector (ray machine), all want coloured separation and look combining optical.Existing look isolation technics has multiple scheme, and the three-plate type projector has three looks to decompose synthetic colour splitting prism mode, liquid crystal colour cast light optical filtering mode.The one-board projector has the holograph optical filtering mode and the field sequence look mode of high-resolution display board.Field sequence look mode is that bluish-green red three primary colors are shown in proper order by 1/3rd times of one respectively.The main product of projector is an one-board now, mainly be to adopt three-colour filter colour wheel mode in the one-board projector, this mode is because optical filter can only make monochromatic light pass through, all the other light can not utilize simultaneously, therefore the utilization factor of white light can only be below 1/3rd, and the light loss more than 2/3rds is arranged.
Improving optical efficiency is the world subject in current projection ray machine field, in order to improve the utilization factor of light, recently the look separation and the scanning technique of rotating three four prisms invented by Philips company, the look that the rotation cylindrical mirror has been invented by Samsung company separates and scanning technique, realize raising white light utilization factor, reduce the purpose of light loss, but all there has been complex structure in these two kinds of schemes, problems such as volume is big, and price is expensive.For seeking more simple method, here, we have proposed a kind of Color splitting mirror stack.
Summary of the invention
The objective of the invention is to propose a kind of Color splitting mirror stack, this Color splitting mirror stack can be separated into incident white light band the light belt arranged side by side of three kinds of colors of red, green, blue simultaneously, and when the translation of incident white light band, red, green, blue light belt arranged side by side rolls in regular turn, realizes the scanning effect.
The objective of the invention is to realize: a kind of Color splitting mirror stack by following technical proposals, it is characterized in that: comprise five layers of transparent panel and at least five layers of color separation deielectric-coating at least, described transparent panel and the alternate setting of described color separation deielectric-coating, described color separation deielectric-coating is red, green, primary colors color separation deielectric-coating, this color separation deielectric-coating is brought into by white light and is penetrated order, from front to back equidistantly and be arranged in parallel within on same the axis, the equal in length of described three primary colors color separation deielectric-coating, the width of described second layer color separation deielectric-coating is two times of ground floor color separation deielectric-coating width, the width of described the 3rd layer of color separation deielectric-coating is more than or equal to three times of ground floor color separation deielectric-coating width, the width of described the 4th layer of color separation deielectric-coating is more than or equal to two times of ground floor color separation deielectric-coating width, the width of layer 5 color separation deielectric-coating is more than or equal to one times of ground floor color separation deielectric-coating width, described ground floor color separation deielectric-coating width meets relationship: H=L*tgA*2, wherein, H is a color separation deielectric-coating width, L is the spacing of adjacent color separation deielectric-coating, A is the incident angle of white light band on ground floor color separation deielectric-coating.
Compared with the prior art the present invention has following advantage:
1, because the present invention utilizes the optical characteristics of transparent panel and color separation deielectric-coating, incident white light band is separated into simultaneously the light belt arranged side by side of three kinds of colors of red, green, blue, and project simultaneously on the pictcure generator (as Lcos, DMD etc.), the loss of light seldom, the time of light and space availability ratio are all very high.
2, of the present invention simple in structure, easy to process, volume is little, and is in light weight.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, structural representation of the present invention
Fig. 2, end view drawing of the present invention (left side of Fig. 1)
The structural representation of Fig. 3, embodiments of the invention two
Fig. 4, optical scanning synoptic diagram of the present invention
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of Color splitting mirror stack, at least comprise five layers of transparent panel 10 and at least five layers of color separation deielectric-coating 20, described transparent panel and the alternate setting of described color separation deielectric-coating, described color separation deielectric-coating is red, green, primary colors color separation deielectric-coating, this color separation deielectric-coating is pressed white light band F incident order, from front to back equidistantly and be arranged in parallel within on same the axis, the length B of described three primary colors color separation deielectric-coating equates, the width of described second layer color separation deielectric-coating is two times of ground floor color separation deielectric-coating width, the width of described the 3rd layer of color separation deielectric-coating is more than or equal to three times of ground floor color separation deielectric-coating width, the width of described the 4th layer of color separation deielectric-coating is more than or equal to two times of ground floor color separation deielectric-coating width, the width of layer 5 color separation deielectric-coating is more than or equal to one times of ground floor color separation deielectric-coating width, described ground floor color separation deielectric-coating width meets relationship: H=L*tgA*2, wherein, H is a color separation deielectric-coating width, L is the spacing of adjacent color separation deielectric-coating, A is the incident angle of white light band on ground floor color separation deielectric-coating.According to the needs in the design, described white light band can be 1 °-45 ° to the incident angle of color separation deielectric-coating.Described the 4th layer, the width of layer 5 color separation deielectric-coating also can be three times of ground floor color separation deielectric-coating width.
In the present embodiment, five layers of transparent panel can be optical flats, the thickness of five glass plates equates, by from front to back order with the gluing one that is connected into of optics, second upper surface to the 5th optical flat is coated with four layers of color separation deielectric-coating of ground floor to the, the lower surface of the 5th optical flat is coated with layer 5 color separation deielectric-coating, and the center line of described five layers of color separation deielectric-coating should be positioned on same the axis C.The color separation deielectric-coating of described three kinds of colors should be according to unified color sequences cycle arrangement.Putting in order of five layers of color separation deielectric-coating can be red, green, blue, red, green.Also can be green, blue, red, green, blue.Can also be indigo plant, red, green, blue, red etc.
In the present embodiment, the multilayered medium membrane technology (Dichroicmirror) that described color separation deielectric-coating is a kind of maturation, be a kind of optical thin film, its function be the colorama reflection (can reach more than 95%) of certain wavelength and certain bandwidth in the white light of irradiation on it and all smooth former road of remaining light by (can reach more than 95%).The thickness of selection different refractivity medium, each layer medium and the number of plies etc. can be determined catoptrical wavelength, bandwidth and reflectivity etc. to certain incident angle white light.In the Color splitting mirror stack of invention its centre wavelength of red, green, blue color separation deielectric-coating of using for example can select 640,550,470 nanometers (nm) respectively and corresponding bandwidth as 600nm more than, 80nm and below the 500nm, like this visible light is almost all used.
Referring to Fig. 3 according to the foregoing description, a special case can appear in Color splitting mirror stack of the present invention, in the present embodiment, it is 45 ° that the regulation white light is brought firing angle into, described transparent panel is designed to prism, present embodiment is a distortion of the foregoing description in shape in outward appearance, promptly four angle cancellations of the Color splitting mirror stack that is rectangular shape, make it be deformed into the Color splitting mirror stack that is four prisms cylinder, by ordering from front to back, it is prism that first transparent panel is deformed into prism, and its cross section is isosceles triangle, it is that its cross section of four prisms is isosceles trapezoid that second transparent panel is deformed into prism, it is four prisms that the 3rd transparent panel is deformed into prism, and its cross section is trapezoidal, and the 4th transparent panel and the 5th transparent panel all are deformed into prism, and all be four prisms, its cross section is trapezoidal.The plane of Color splitting mirror stack one side that constitutes thus is set at white light band scanning entrance window 30, with perpendicular another face of described entrance window on form the walk abreast scanning window 40 of light belt of the red, green, blue that equates with the entrance window area.The size of entrance window of the present invention and scanning window can be designed to 14.224 * 3.556 millimeters.
Referring to Fig. 4, with the Color splitting mirror stack demonstration optical scanning principle of the present invention of embodiment two, for the convenience on describing, the Color splitting mirror stack with embodiment two in this figure has been rotated counterclockwise 45 °.Side at Color splitting mirror stack entrance window 30 is provided with a white light band F, the white light zone face is long-pending to be 1/3 of Color splitting mirror stack entrance window area, control white light band is by direction of motion is at the uniform velocity mobile to the entrance window top from the entrance window lower end from bottom to top, in moving process, the part of overflowing the entrance window top entrance window lower end that snaps back is continued at the uniform velocity mobilely from bottom to top, carries out continuous scan round.Described mobile white light band is separated into three kinds of color light belts arranged side by side of red, green, blue after entering Color splitting mirror stack, and equivalent continuously-directional scanning when the scanning window place of Color splitting mirror stack realizes red, green, blue three coloured light bands.In scanning process, described red, green, blue three coloured light bands light belt width separately is constant, and the size and location of described red, green, blue three coloured light band scanning areas are constant, but red, green, blue three coloured light bands roll in scanning area in regular turn.
In order to enlarge colour gamut, the color of the color separation deielectric-coating that the present invention uses can be the four primaries of selecting on CIE figure, when adopting four primaries color separation deielectric-coating, described color separation deielectric-coating is seven layers at least, and ground floor to the effective width ratio of layer 7 color separation deielectric-coating is 1: 2: 3: 4: 3: 2: 1.
Claims (4)
1. Color splitting mirror stack, it is characterized in that, at least comprise five layers of transparent panel and at least five layers of color separation deielectric-coating, described transparent panel and the alternate setting of described color separation deielectric-coating, described color separation deielectric-coating is red, green, primary colors color separation deielectric-coating, this color separation deielectric-coating is brought into by white light and is penetrated order from front to back equidistantly and be arranged in parallel, and the center line of this color separation deielectric-coating is positioned on the same axis, the equal in length of described three primary colors color separation deielectric-coating, the width of described second layer color separation deielectric-coating is two times of ground floor color separation deielectric-coating width, the width of described the 3rd layer of color separation deielectric-coating is more than or equal to three times of ground floor color separation deielectric-coating width, the width of described the 4th layer of color separation deielectric-coating is more than or equal to two times of ground floor color separation deielectric-coating width, the width of layer 5 color separation deielectric-coating is more than or equal to one times of ground floor color separation deielectric-coating width, described ground floor color separation deielectric-coating width meets relationship: H=L*tgA*2, wherein, H is a color separation deielectric-coating width, L is the spacing of adjacent color separation deielectric-coating, A is the incident angle of white light band on ground floor color separation deielectric-coating, the plane of described Color splitting mirror stack one side is a white light band scanning entrance window, with perpendicular another face of described entrance window on form equate with the entrance window area red, green, the scanning window of blue parallel light belt.
2. Color splitting mirror stack according to claim 1 is characterized in that: it is 45 ° that described white light is brought firing angle into, and described transparent panel is a prism.
3. Color splitting mirror stack according to claim 1 is characterized in that: described white light band is 1 °-45 ° to the incident angle of color separation deielectric-coating.
4. Color splitting mirror stack according to claim 1, it is characterized in that: the color of described color separation deielectric-coating is the four primaries of selecting on CIE figure, described color separation deielectric-coating is seven layers at least, and ground floor to the effective width ratio of layer 7 color separation deielectric-coating is 1: 2: 3: 4: 3: 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410048379XA CN100370308C (en) | 2004-06-30 | 2004-06-30 | Color splitting mirror stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410048379XA CN100370308C (en) | 2004-06-30 | 2004-06-30 | Color splitting mirror stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715995A CN1715995A (en) | 2006-01-04 |
| CN100370308C true CN100370308C (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410048379XA Expired - Fee Related CN100370308C (en) | 2004-06-30 | 2004-06-30 | Color splitting mirror stack |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011044763A1 (en) * | 2009-10-13 | 2011-04-21 | Tang Bin | Optical path system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709144A (en) * | 1986-04-02 | 1987-11-24 | Hewlett-Packard Company | Color imager utilizing novel trichromatic beamsplitter and photosensor |
| JPS6344602B2 (en) * | 1980-04-15 | 1988-09-06 | Fuotsuke Unto Co Gmbh Unto Co | |
| JPH04338739A (en) * | 1991-05-16 | 1992-11-26 | Seiko Epson Corp | Projection type liquid crystal display device |
| JP2000137220A (en) * | 1998-10-30 | 2000-05-16 | Nec Corp | Single plate type liquid crystal projector |
| JP2000221079A (en) * | 1998-12-23 | 2000-08-11 | Hewlett Packard Co <Hp> | Color separator for scanning image having four colors or more |
| GB2354658A (en) * | 1999-09-27 | 2001-03-28 | Adi Corp | Reflective type of liquid crystal display projection system |
-
2004
- 2004-06-30 CN CNB200410048379XA patent/CN100370308C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6344602B2 (en) * | 1980-04-15 | 1988-09-06 | Fuotsuke Unto Co Gmbh Unto Co | |
| US4709144A (en) * | 1986-04-02 | 1987-11-24 | Hewlett-Packard Company | Color imager utilizing novel trichromatic beamsplitter and photosensor |
| JPH04338739A (en) * | 1991-05-16 | 1992-11-26 | Seiko Epson Corp | Projection type liquid crystal display device |
| JP2000137220A (en) * | 1998-10-30 | 2000-05-16 | Nec Corp | Single plate type liquid crystal projector |
| JP2000221079A (en) * | 1998-12-23 | 2000-08-11 | Hewlett Packard Co <Hp> | Color separator for scanning image having four colors or more |
| GB2354658A (en) * | 1999-09-27 | 2001-03-28 | Adi Corp | Reflective type of liquid crystal display projection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1715995A (en) | 2006-01-04 |
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Owner name: BEIJING WANFANG TONGHUI SCIENCE CO., LTD. Free format text: FORMER OWNER: WEN JINGWU Effective date: 20071116 |
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Effective date of registration: 20071116 Address after: The 100070 Beijing Seahawks Fengtai District Science City Road No. nine building two layer Jintang Patentee after: Beijing Wanfang Tonghui Technology Co., Ltd. Address before: 100076 Beijing city Fengtai District Donggaodi Mei Yuen Lane 23 building 4 unit 5 Patentee before: Wen Jingwu |
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Owner name: ZHAO QIN Free format text: FORMER OWNER: BEIJING WANFANG TONGHUI TECHNOLOGY CO., LTD. Effective date: 20110406 |
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Effective date of registration: 20110406 Address after: 100166 Beijing city Fengtai District No. 50 a Patentee after: Zhao Qin Address before: The 100070 Beijing Seahawks Fengtai District Science City Road No. nine building two layer Jintang Patentee before: Beijing Wanfang Tonghui Technology Co., Ltd. |
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Address after: 102600 No. 6 loyalty Road, Xihongmen Town, Beijing, Daxing District Patentee after: Zhao Qin Address before: 100166 Beijing city Fengtai District No. 50 a Patentee before: Zhao Qin |
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