JPH03119817U - - Google Patents
Info
- Publication number
- JPH03119817U JPH03119817U JP2917390U JP2917390U JPH03119817U JP H03119817 U JPH03119817 U JP H03119817U JP 2917390 U JP2917390 U JP 2917390U JP 2917390 U JP2917390 U JP 2917390U JP H03119817 U JPH03119817 U JP H03119817U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- crystal plate
- projector device
- concave reflector
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案実施例の説明図、第２図は他の
実施例の説明図、第３図は液晶板に対する照射状
態と照度分布の説明図である。
１……光源ランプ、２……凹面反射鏡、３……
ハーフミラー、４１，４２，４３……フイルター
、５１，５２，５３……全反射ミラー、６１，６
２，６３……液晶板、７……プロジエクターレン
ズ、８……偏光ビームスプリツター、９……1/4
波長板。
FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of another embodiment, and FIG. 3 is an explanatory diagram of the irradiation state and illuminance distribution on a liquid crystal plate. 1... Light source lamp, 2... Concave reflector, 3...
Half mirror, 41, 42, 43... Filter, 51, 52, 53... Total reflection mirror, 61, 6
2,63...Liquid crystal plate, 7...Projector lens, 8...Polarizing beam splitter, 9...1/4
Wave plate.
Claims (1)
液晶板に入射し、この液晶板の透過光をスクリー
ンに投影する液晶プロジエクター装置であつて、 前記凹面反射鏡の反射光をハーフミラーで２分
割し、当該２分割された光を一部オーバラツプす
る平行光線で液晶板に入射することを特徴とする
液晶プロジエクター装置。 ２ 光源ランプの放射光を凹面反射鏡で反射して
液晶板に入射し、この液晶板の透過光をスクリー
ンに投影する液晶プロジエクター装置であつて、 前記凹面反射鏡の反射光を偏光ビームスプリツ
ターで２分割するとともに、分割された一方の偏
光を1/4波長板で他方の偏光に変換し、当該２分
割された同一偏光の光を一部オーバラツプする平
行光線で液晶板に入射することを特徴とする液晶
プロジエクター装置。[Claims for Utility Model Registration] 1. A liquid crystal projector device that reflects emitted light from a light source lamp with a concave reflector and enters a liquid crystal plate, and projects the transmitted light of the liquid crystal plate onto a screen, the concave reflector A liquid crystal projector device characterized in that light reflected from a mirror is divided into two by a half mirror, and the two divided lights are incident on a liquid crystal plate as parallel light beams that partially overlap. 2. A liquid crystal projector device that reflects emitted light from a light source lamp by a concave reflector and enters the liquid crystal plate, and projects the transmitted light of the liquid crystal plate onto a screen, the light reflected by the concave reflector being polarized beam splitter. At the same time as splitting the light into two parts using a mirror, one of the split polarized lights is converted into the other polarized light using a 1/4 wavelength plate, and the two parts of the same polarized light are incident on the liquid crystal plate as parallel rays that partially overlap. A liquid crystal projector device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2917390U JPH03119817U (en) | 1990-03-23 | 1990-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2917390U JPH03119817U (en) | 1990-03-23 | 1990-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03119817U true JPH03119817U (en) | 1991-12-10 |
Family
ID=31531948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2917390U Pending JPH03119817U (en) | 1990-03-23 | 1990-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03119817U (en) |
-
1990
- 1990-03-23 JP JP2917390U patent/JPH03119817U/ja active Pending
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