JPH0377902U - - Google Patents
Info
- Publication number
- JPH0377902U JPH0377902U JP13930289U JP13930289U JPH0377902U JP H0377902 U JPH0377902 U JP H0377902U JP 13930289 U JP13930289 U JP 13930289U JP 13930289 U JP13930289 U JP 13930289U JP H0377902 U JPH0377902 U JP H0377902U
- Authority
- JP
- Japan
- Prior art keywords
- wavelength selection
- dichroic
- mirror
- light
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 3
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- RSHFXVVRRRVVNQ-YOJQQDEFSA-N Phleixanthophyll Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1=C(C)CCCC1(C)C)C=CC=C(/C)C=CC=C(/C)C=CC(O)C(C)(C)OC2OC(CO)C(O)C(O)C2O RSHFXVVRRRVVNQ-YOJQQDEFSA-N 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Description
第１図および第２図は、第１の考案の色分解光
学系の一例を示す概略図であり、第３図、第４図
および第５図は、Ｎｄ２Ｏ３を含有したガラス板
の透過率曲線図であり、第６図は、ＤＭ−Ｇおよ
びＤＭ−Ｒの反射波長帯域の経時変化の一例を示
す反射率曲線図であり、第７図は、ＤＭ−Ｇおよ
びＤＭ−ＲそれぞれにＮｄ２Ｏ３を含有したガラ
スを透過した光が入射した場合の光源からみた反
射率曲線図であり、第８図は、カラー液晶プロジ
エクターの色分解光学系に要求されるＤＭの反射
率特性の一例を示す反射率曲線図である。
１……光源ランプ、２……コールドミラー、３
，１０……ＤＭ−Ｂ、３ａ，１１ａ……Ｎｄ２Ｏ
３を含むガラス板、４，１２……ＤＭ−Ｒ、５，
１１……ＤＭ−Ｇ、７，１３……青色反射光、８
，１５……赤色反射光、９，１４……緑色反射光
。
1 and 2 are schematic diagrams showing an example of the color separation optical system of the first invention, and FIGS. 3, 4, and 5 are schematic diagrams showing an example of the color separation optical system of the first invention, and FIGS. FIG. 6 is a reflectance curve diagram showing an example of changes over time in the reflection wavelength bands of DM-G and DM-R, and FIG. FIG. 8 is a reflectance curve diagram as seen from the light source when light transmitted through glass containing Nd 2 O 3 is incident, and FIG. 8 shows the DM reflectance required for the color separation optical system of a color liquid crystal projector. FIG. 3 is a reflectance curve diagram showing an example of characteristics. 1...Light source lamp, 2...Cold mirror, 3
, 10...DM-B, 3a, 11a... Nd2O
Glass plate including 3 , 4, 12...DM-R, 5,
11...DM-G, 7,13...Blue reflected light, 8
, 15... Red reflected light, 9, 14... Green reflected light.
Claims (1)
イクロイツク波長選択ミラーと、緑色波長帯域の
光を選択的に反射する第２のダイクロイツク波長
選択ミラーと、赤色波長帯域の光を選択的に反射
する第３のダイクロイツク波長選択ミラーとを備
えた色分解光学系または、前記第１、第２および
第３のダイクロイツク波長選択ミラーのうちのい
ずれか２枚と、これら２枚のダイクロイツク波長
選択ミラーを透過した光を反射する反射鏡とを備
えた色分解光学系において、 前記第２および／または第３のダイクロイツク
波長選択ミラーの配置位置よりも光源側の光路内
に、Ｎｄ２Ｏ３を重量％で２〜２５％含むガラス
板を設けたことを特徴とする色分解光学系。[Claims for Utility Model Registration] A first dichroic wavelength selection mirror that selectively reflects light in the blue wavelength band, a second dichroic wavelength selection mirror that selectively reflects light in the green wavelength band, A color separation optical system comprising a third dichroic wavelength selection mirror that selectively reflects light in the red wavelength band, or any two of the first, second, and third dichroic wavelength selection mirrors. and a reflecting mirror that reflects the light transmitted through these two dichroic wavelength selection mirrors, the position of the second and/or third dichroic wavelength selection mirror A color separation optical system characterized in that a glass plate containing 2 to 25% by weight of Nd 2 O 3 is provided in an optical path on a light source side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13930289U JPH0377902U (en) | 1989-11-30 | 1989-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13930289U JPH0377902U (en) | 1989-11-30 | 1989-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0377902U true JPH0377902U (en) | 1991-08-06 |
Family
ID=31686357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13930289U Pending JPH0377902U (en) | 1989-11-30 | 1989-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0377902U (en) |
-
1989
- 1989-11-30 JP JP13930289U patent/JPH0377902U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH04114049U (en) | Optical structure of LCD projection display | |
| KR910021147A (en) | LCD projector optical system | |
| JP2537607B2 (en) | Projection color display device | |
| JPH0377902U (en) | ||
| JPH02253291A (en) | Projection type color display device | |
| JPH0290824U (en) | ||
| JPS6435143U (en) | ||
| JPS6330839U (en) | ||
| JPH04147248A (en) | Liquid crystal video projector | |
| JPH0233087U (en) | ||
| JPH02253292A (en) | Projection type color display device | |
| JPH02140541U (en) | ||
| TW548473B (en) | Optical engine of reflective type liquid crystal projector | |
| JP2547241Y2 (en) | LCD projector | |
| JPH03109203U (en) | ||
| JPS6253882U (en) | ||
| JPH0470827A (en) | Projection type liquid crystal display device | |
| JPH01214801A (en) | Color image synthesizing dichroic prism | |
| JPH0255344A (en) | Image projector | |
| JPH0389433U (en) | ||
| JPH03107883U (en) | ||
| JPH0373910U (en) | ||
| JPH02123986U (en) | ||
| JPS59123889U (en) | variable color display fixture | |
| JPH0455031U (en) |