JPH0282178U - - Google Patents

Info

Publication number
JPH0282178U
JPH0282178U JP16165188U JP16165188U JPH0282178U JP H0282178 U JPH0282178 U JP H0282178U JP 16165188 U JP16165188 U JP 16165188U JP 16165188 U JP16165188 U JP 16165188U JP H0282178 U JPH0282178 U JP H0282178U
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal panel
video
modulated
video signal
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
Application number
JP16165188U
Other languages
English (en)
Other versions
JPH0747013Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988161651U priority Critical patent/JPH0747013Y2/ja
Publication of JPH0282178U publication Critical patent/JPH0282178U/ja
Application granted granted Critical
Publication of JPH0747013Y2 publication Critical patent/JPH0747013Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Transforming Electric Information Into Light Information (AREA)

Description

【図面の簡単な説明】
第１図はこの考案に係るビデオプロジエクタに
使用される液晶パネル駆動装置の一例を示す系統
図、第２図はその動作説明に供する波形図、第３
図はビデオプロジエクタに使用される投影系の説
明図、第４図は液晶パネルの入射光と反射光との
関係を示す図、第５図はコントラスト比の説明に
供する特性図、第６図は従来のビデオ信号の波形
図、第７図はそのときのスクリーンにおけるコン
トラストの図である。 １０……液晶パネル駆動装置、２０……変調信
号形成回路、２２……ＡＭ変調回路、２４……液
晶パネル駆動回路、３２……光源、３４……反射
ミラー、３６……コンデンサレンズ、４０……液
晶パネル、４２……プロジエクシヨンレンズ、４
４……スクリーン、ＰＭ……変調信号、ＳＶ……
出力ビデオ信号。

Claims (1)

  1. 【実用新案登録請求の範囲】 液晶パネルを使用したビデオプロジエクタにお
    いて、 垂直周期の変調信号によつてビデオ信号が変調
    され、変調されたこのビデオ信号に基づいて上記
    液晶パネルを駆動することによつて、 コントラストの一様な画像がスクリーン上に拡
    大投映されるようになされたことを特徴とするビ
    デオプロジエクタ。
JP1988161651U 1988-12-13 1988-12-13 ビデオプロジェクタ Expired - Fee Related JPH0747013Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988161651U JPH0747013Y2 (ja) 1988-12-13 1988-12-13 ビデオプロジェクタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988161651U JPH0747013Y2 (ja) 1988-12-13 1988-12-13 ビデオプロジェクタ

Publications (2)

Publication Number Publication Date
JPH0282178U true JPH0282178U (ja) 1990-06-25
JPH0747013Y2 JPH0747013Y2 (ja) 1995-10-25

Family

ID=31444781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988161651U Expired - Fee Related JPH0747013Y2 (ja) 1988-12-13 1988-12-13 ビデオプロジェクタ

Country Status (1)

Country Link
JP (1) JPH0747013Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7374290B2 (en) 2003-06-13 2008-05-20 Sony Corporation Projection type display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489759A (en) * 1977-12-27 1979-07-17 Matsushita Electric Ind Co Ltd Liquid crystal light valve type projector
JPS60187189A (ja) * 1984-03-06 1985-09-24 Matsushita Electric Ind Co Ltd シエ−デイング補正回路
JPS62147223U (ja) * 1986-03-11 1987-09-17
JPS62298283A (ja) * 1986-06-18 1987-12-25 Nec Home Electronics Ltd 液晶表示装置の駆動方式

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489759A (en) * 1977-12-27 1979-07-17 Matsushita Electric Ind Co Ltd Liquid crystal light valve type projector
JPS60187189A (ja) * 1984-03-06 1985-09-24 Matsushita Electric Ind Co Ltd シエ−デイング補正回路
JPS62147223U (ja) * 1986-03-11 1987-09-17
JPS62298283A (ja) * 1986-06-18 1987-12-25 Nec Home Electronics Ltd 液晶表示装置の駆動方式

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7374290B2 (en) 2003-06-13 2008-05-20 Sony Corporation Projection type display device
US7455411B2 (en) 2003-06-13 2008-11-25 Sony Corporation Projection-type display device
US7566134B2 (en) 2003-06-13 2009-07-28 Sony Corporation Protection type display device

Also Published As

Publication number Publication date
JPH0747013Y2 (ja) 1995-10-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees