JPH03103421U - - Google Patents
Info
- Publication number
- JPH03103421U JPH03103421U JP1123090U JP1123090U JPH03103421U JP H03103421 U JPH03103421 U JP H03103421U JP 1123090 U JP1123090 U JP 1123090U JP 1123090 U JP1123090 U JP 1123090U JP H03103421 U JPH03103421 U JP H03103421U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- image
- light valve
- diffraction grating
- projection
- 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 11
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の液晶プロジエクシヨン装置の
構造図、第２図は本考案に用いられる位相格子の
説明図、第３図は本考案の液晶プロジエクシヨン
装置による投影画像の部分図、第４図は従来の液
晶プロジエクシヨン装置の構造図、第５図は本来
の曲線形状と従来のマトリクス画像との比較図、
第６図は従来の補正したマトリクス画像の部分図
、第７図はもう１つの従来の補正したマトリクス
画像の部分図、第８図はもう１つの本考案の液晶
プロジエクシヨン装置の構造図、第９図は別の本
考案の液晶プロジエクシヨン装置の構造図である
。
１……メタルハライドランプ、２……赤外線カ
ツトフイルター、３……赤外線吸収反射鏡、４…
…青色反射ダイクロイツクミラー、５……ミラー
、６Ｂ，６Ｇ，６Ｒ……液晶ライトバルブ、７…
…緑色反射ダイクロイツクミラー、８……ミラー
、９……ミラー、１０……ダイクロイツクプリズ
ム、１１……投射レンズ、１２……スクリーン、
１３……線が切れた画像、１４……光強度が弱い
画像、１５……添削されたドツト、１６……透明
基板、１７……透明膜、１８……位相格子。
FIG. 1 is a structural diagram of the liquid crystal projection device of the present invention, FIG. 2 is an explanatory diagram of a phase grating used in the present invention, and FIG. 3 is a partial diagram of a projected image by the liquid crystal projection device of the present invention. Figure 4 is a structural diagram of a conventional liquid crystal projection device, Figure 5 is a comparison diagram of the original curved shape and a conventional matrix image,
FIG. 6 is a partial diagram of a conventional corrected matrix image, FIG. 7 is a partial diagram of another conventional corrected matrix image, and FIG. 8 is a structural diagram of another liquid crystal projection device of the present invention. FIG. 9 is a structural diagram of another liquid crystal projection device of the present invention. 1...Metal halide lamp, 2...Infrared cut filter, 3...Infrared absorption reflector, 4...
...Blue reflective dichroic mirror, 5...Mirror, 6B, 6G, 6R...Liquid crystal light valve, 7...
...Green reflective dichroic mirror, 8...Mirror, 9...Mirror, 10...Dichroic prism, 11...Projection lens, 12...Screen,
13... Image with broken lines, 14... Image with weak light intensity, 15... Corrected dots, 16... Transparent substrate, 17... Transparent film, 18... Phase grating.
Claims (1)
する画像を投射レンズより投射面に投射する液晶
プロジエクシヨン装置において、 液晶ライトバルブと投射面の間に回折格子を備
え、回折格子を通過する光束の拡がりがドツトピ
ツチ以下であり、且つ回折格子の溝の方向が画像
の縦方向又は横方向に平行になつていることを特
徴とする液晶プロジエクシヨン装置。[Claim for Utility Model Registration] In a liquid crystal projection device that projects an image to be reproduced on a dot matrix type liquid crystal light valve onto a projection surface from a projection lens, a diffraction grating is provided between the liquid crystal light valve and the projection surface, and a diffraction grating is provided between the liquid crystal light valve and the projection surface. A liquid crystal projection device characterized in that the spread of a light beam passing through a grating is less than a dot pitch, and the direction of the grooves of the diffraction grating is parallel to the vertical or horizontal direction of an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1123090U JPH03103421U (en) | 1990-02-07 | 1990-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1123090U JPH03103421U (en) | 1990-02-07 | 1990-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03103421U true JPH03103421U (en) | 1991-10-28 |
Family
ID=31514764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1123090U Pending JPH03103421U (en) | 1990-02-07 | 1990-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03103421U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS643886B2 (en) * | 1982-05-25 | 1989-01-24 | Bayer Ag |
-
1990
- 1990-02-07 JP JP1123090U patent/JPH03103421U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS643886B2 (en) * | 1982-05-25 | 1989-01-24 | Bayer Ag |
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