JPS643886U - - Google Patents
Info
- Publication number
- JPS643886U JPS643886U JP9398987U JP9398987U JPS643886U JP S643886 U JPS643886 U JP S643886U JP 9398987 U JP9398987 U JP 9398987U JP 9398987 U JP9398987 U JP 9398987U JP S643886 U JPS643886 U JP S643886U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- birefringent plate
- projected
- crystal projector
- 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 9
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の一実施例の光学系の概略図、
第２図は第１図の一部分の説明図である。
図中、１は光源、２はコンデンサー系、３は液
晶表示体、４は投写レンズ、５は複屈折板、６は
スクリーン面、７は１／４波長板である。
FIG. 1 is a schematic diagram of an optical system according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a portion of FIG. 1. In the figure, 1 is a light source, 2 is a condenser system, 3 is a liquid crystal display, 4 is a projection lens, 5 is a birefringent plate, 6 is a screen surface, and 7 is a quarter wavelength plate.
Claims (1)
数の画素より成る液晶表示体を投写レンズにより
スクリーン面上に投写する液晶プロジエクターに
おいて、該スクリーン面上に投写される前記液晶
表示体の各画素間の空隙部に、該空隙部の隣接す
る画素の少なくとも一画素の投写像が分離して投
写されるような複屈折板を前記投写レンズと前記
液晶表示体との間に、更に該複屈折板と該液晶表
示体との間に１／４波長板を設けたことを特徴と
する液晶プロジエクター。 (2) 前記複屈折板は通過する光束を常光線と異
常光線とに分離する際、該分離量によつて、該ス
クリーン面上における投写像が投写画素の配列ピ
ツチの略半分分離する厚さを有していることを特
徴とする実用新案登録請求の範囲第１項記載の液
晶プロジエクター。 (3) 前記複屈折板は異なる２方向に光線を分離
するように光学軸を設定した２枚の複屈折板を中
間に１／４波長板を挟んで接合して構成されてい
ることを特徴とする実用新案登録請求の範囲第２
項記載の液晶プロジエクター。[Claims for Utility Model Registration] (1) In a liquid crystal projector that projects a liquid crystal display consisting of a plurality of pixels arranged with gaps between the pixels onto a screen surface using a projection lens, the screen surface A birefringent plate is provided in the gap between each pixel of the liquid crystal display to be projected onto the projection lens so that a projected image of at least one pixel adjacent to the gap is separately projected. A liquid crystal projector characterized in that a quarter wavelength plate is provided between the birefringent plate and the liquid crystal display, and further between the birefringent plate and the liquid crystal display. (2) The birefringent plate has a thickness such that, when separating the passing light beam into ordinary rays and extraordinary rays, the amount of separation separates the projected image on the screen surface by approximately half the array pitch of the projected pixels. A liquid crystal projector according to claim 1, characterized in that it has the following. (3) The birefringent plate is composed of two birefringent plates whose optical axes are set so as to separate light rays in two different directions, joined together with a quarter wavelength plate sandwiched between them. Second scope of claim for utility model registration
The liquid crystal projector described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9398987U JPS643886U (en) | 1987-06-18 | 1987-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9398987U JPS643886U (en) | 1987-06-18 | 1987-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643886U true JPS643886U (en) | 1989-01-11 |
Family
ID=31318477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9398987U Pending JPS643886U (en) | 1987-06-18 | 1987-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643886U (en) |
-
1987
- 1987-06-18 JP JP9398987U patent/JPS643886U/ja active Pending
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