JPH0361779U - - Google Patents
Info
- Publication number
- JPH0361779U JPH0361779U JP12107189U JP12107189U JPH0361779U JP H0361779 U JPH0361779 U JP H0361779U JP 12107189 U JP12107189 U JP 12107189U JP 12107189 U JP12107189 U JP 12107189U JP H0361779 U JPH0361779 U JP H0361779U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- display device
- image display
- projection type
- type image
- 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.)
- Granted
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の光学系概略図、第２図は液晶
板およびブラウン管を走査する電気回路のブロツ
ク図、第３図は液晶板の要部切断斜視図、第４図
は液晶板の等価回路図、第５図は従来の光学系概
略図である。
図中１は高輝度ブラウン管、２は液晶板、３〜
４は偏光板、５は投射レンズ、６はスクリーン、
７は集光レンズ、８は光源、９は反射鏡、１０は
人力同期信号、１１は垂直同期分離回路、１２は
垂直同期パルス、１３は垂直発振回路、１４は垂
直偏向コイル、１５は水平同期分離回路、１６は
水平同期パルス、１７は水平発振回路、１８は水
平偏向コイル、２０は人力映像信号、２１は映像
増幅回路、２２はクロツクパルス発生回路、２３
はドツトカウンタ、２４はデコーダ、２５は走査
線選択信号、２６はラスターカウンタ、２７はデ
コーダ、２８はアナログスイツチ、２９は信号線
選択信号、３０は走査線、３１は信号機、３２〜
３３はガラス基板、３４は液晶、３５は選択され
た画素、３６〜４１は半選択画素である。
Fig. 1 is a schematic diagram of the optical system of the present invention, Fig. 2 is a block diagram of the electric circuit that scans the liquid crystal plate and cathode ray tube, Fig. 3 is a cutaway perspective view of the main part of the liquid crystal plate, and Fig. 4 is the equivalent of the liquid crystal plate. The circuit diagram, FIG. 5, is a schematic diagram of a conventional optical system. In the figure, 1 is a high-intensity cathode ray tube, 2 is a liquid crystal panel, and 3...
4 is a polarizing plate, 5 is a projection lens, 6 is a screen,
7 is a condenser lens, 8 is a light source, 9 is a reflector, 10 is a manual synchronization signal, 11 is a vertical synchronization separation circuit, 12 is a vertical synchronization pulse, 13 is a vertical oscillation circuit, 14 is a vertical deflection coil, and 15 is horizontal synchronization Separation circuit, 16 horizontal synchronization pulse, 17 horizontal oscillation circuit, 18 horizontal deflection coil, 20 human video signal, 21 video amplification circuit, 22 clock pulse generation circuit, 23
is a dot counter, 24 is a decoder, 25 is a scanning line selection signal, 26 is a raster counter, 27 is a decoder, 28 is an analog switch, 29 is a signal line selection signal, 30 is a scanning line, 31 is a traffic signal, 32-
33 is a glass substrate, 34 is a liquid crystal, 35 is a selected pixel, and 36 to 41 are half-selected pixels.
Claims (1)
を透過させることにより形成した映像光を投写レ
ンズでスクリーンに結像する投写型映像表示装置
において、入力した同期信号により前記液晶板の
画素選択信号を発生するカウンタの同期をとると
ともに、同同期信号に同期して発生した垂直およ
び水平偏向電圧により電子ビームを偏向走査する
高輝度ブラウン管を前記照明光の光源としたこと
を特徴とする投写型映像表示装置。 (2) 前記液晶板を照射する照明光源を白色発光
のフライングスポツトチユーブであることを特徴
とする請求項(1)記載の投写型映像表示装置。 (3) 前記液晶板がカラー映像を形成するカラー
液晶板であることを特徴とする請求項(1)または(
2)記載の投写型映像表示装置。[Scope of Claim for Utility Model Registration] (1) In a projection type image display device that forms an image on a screen with a projection lens by transmitting illumination light from a light source through a liquid crystal plate sandwiched between polarizing plates, The generated synchronization signal synchronizes a counter that generates a pixel selection signal for the liquid crystal plate, and the high-intensity cathode ray tube that deflects and scans the electron beam is controlled by the vertical and horizontal deflection voltages generated in synchronization with the illumination light. A projection type image display device characterized by using a light source. (2) The projection type image display device according to claim (1), wherein the illumination light source that illuminates the liquid crystal panel is a flying spot tube that emits white light. (3) Claim (1) or (3) characterized in that the liquid crystal panel is a color liquid crystal panel that forms a color image.
2) The projection type image display device described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107189U JPH0646139Y2 (en) | 1989-10-17 | 1989-10-17 | Projection type video display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12107189U JPH0646139Y2 (en) | 1989-10-17 | 1989-10-17 | Projection type video display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0361779U true JPH0361779U (en) | 1991-06-17 |
| JPH0646139Y2 JPH0646139Y2 (en) | 1994-11-24 |
Family
ID=31669114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12107189U Expired - Lifetime JPH0646139Y2 (en) | 1989-10-17 | 1989-10-17 | Projection type video display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646139Y2 (en) |
-
1989
- 1989-10-17 JP JP12107189U patent/JPH0646139Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0646139Y2 (en) | 1994-11-24 |
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