JPS62155583U - - Google Patents
Info
- Publication number
- JPS62155583U JPS62155583U JP4285686U JP4285686U JPS62155583U JP S62155583 U JPS62155583 U JP S62155583U JP 4285686 U JP4285686 U JP 4285686U JP 4285686 U JP4285686 U JP 4285686U JP S62155583 U JPS62155583 U JP S62155583U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- display panel
- crystal display
- fresnel lens
- 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
- 238000005286 illumination Methods 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図〜第９図はこの考案の一実施例を示した
もので、第１図は液晶プロジエクタの縦断側面図
、第２図は第１図の―線に沿う断面図、第３
図および第４図は第１リニアフレネルレンズの正
面図および側面図、第５図および第６図は第２リ
ニアフレネルレンズの正面図および側面図、第７
図および第８図はリニアフレネルレンズを透過し
た光の方向を示す横方向および上方向から見た説
明図、第９図は液晶表示パネル前面のカラーフイ
ルタを通る光の方向を示す横方向から見た説明図
である。第１０図はこの考案の他の実施例を示す
液晶プロジエクタの縦断側面図である。第１１図
は従来の液晶プロジエクタの縦断側面図、第１２
図は第１１図の―線に沿う断面図である
。
１……液晶表示パネル、１ａ……表示部、２…
…光源部、３……光源ランプ、４……リフレクタ
、５……投影レンズ、８……カラーフイルタ、９
……第１リニアフレネルレンズ、１０，１１……
第２リニアフレネルレンズ、Ｓ……スクリーン。
Figures 1 to 9 show an embodiment of this invention, in which Figure 1 is a vertical side view of the liquid crystal projector, Figure 2 is a sectional view taken along the line - in Figure 1, and Figure 3 is a sectional view taken along line - in Figure 1.
4 and 4 are front and side views of the first linear Fresnel lens, FIGS. 5 and 6 are front and side views of the second linear Fresnel lens, and FIG.
Figure 8 and Figure 8 are explanatory diagrams viewed from the side and top, showing the direction of light passing through the linear Fresnel lens, and Figure 9 is an explanatory diagram showing the direction of light passing through the color filter on the front of the liquid crystal display panel, seen from the side. FIG. FIG. 10 is a longitudinal sectional side view of a liquid crystal projector showing another embodiment of this invention. Figure 11 is a longitudinal cross-sectional side view of a conventional liquid crystal projector;
The figure is a sectional view taken along the line - in FIG. 11. 1...Liquid crystal display panel, 1a...Display section, 2...
...Light source section, 3...Light source lamp, 4...Reflector, 5...Projection lens, 8...Color filter, 9
...First linear Fresnel lens, 10, 11...
Second linear Fresnel lens, S...screen.
Claims (1)
後方に、この液晶表示パネルに向けて光軸と平行
な照明光を照射する光源部を設け、前記液晶表示
パネルの表示像を、この液晶表示パネルの前方に
設けた投影レンズによりスクリーン面に拡大投影
する液晶プロジエクタにおいて、前記光源部と液
晶表示パネルとの間に、前記光源部からの照明光
の光束を前記液晶表示パネルの表示部の狭巾方向
にのみ集光させる第１のリニアフレネルレンズと
、この第１リニアフレネルレンズの集光作用によ
り巾を圧縮された光束を前記光軸と平行な平行光
束に補正する第２のリニアフレネルレンズとを設
けたことを特徴とする液晶プロジエクタ。 A light source unit that irradiates illumination light parallel to the optical axis toward the liquid crystal display panel is provided at the rear of the transmissive liquid crystal display panel whose display unit has a rectangular shape. In a liquid crystal projector that enlarges and projects images onto a screen using a projection lens provided in front of a panel, a beam of illumination light from the light source is transmitted between the light source section and the liquid crystal display panel by narrowing the display section of the liquid crystal display panel. A first linear Fresnel lens that focuses light only in the width direction, and a second linear Fresnel lens that corrects the light beam whose width is compressed by the light focusing action of the first linear Fresnel lens into a parallel light beam parallel to the optical axis. A liquid crystal projector characterized by being provided with.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4285686U JPS62155583U (en) | 1986-03-24 | 1986-03-24 | |
| US07/025,019 US4770525A (en) | 1986-03-24 | 1987-03-12 | Liquid crystal projector |
| DE8787104038T DE3773966D1 (en) | 1986-03-24 | 1987-03-19 | LIQUID CRYSTAL PROJECTOR. |
| EP87104038A EP0239007B1 (en) | 1986-03-24 | 1987-03-19 | Liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4285686U JPS62155583U (en) | 1986-03-24 | 1986-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62155583U true JPS62155583U (en) | 1987-10-02 |
Family
ID=30859171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4285686U Pending JPS62155583U (en) | 1986-03-24 | 1986-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62155583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02189537A (en) * | 1989-01-19 | 1990-07-25 | Nec Corp | Projection type liquid crystal display device |
-
1986
- 1986-03-24 JP JP4285686U patent/JPS62155583U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02189537A (en) * | 1989-01-19 | 1990-07-25 | Nec Corp | Projection type liquid crystal display device |
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