JPH0433034U - - Google Patents
Info
- Publication number
- JPH0433034U JPH0433034U JP7410590U JP7410590U JPH0433034U JP H0433034 U JPH0433034 U JP H0433034U JP 7410590 U JP7410590 U JP 7410590U JP 7410590 U JP7410590 U JP 7410590U JP H0433034 U JPH0433034 U JP H0433034U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- liquid crystal
- turned
- crystal projector
- metal halide
- 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
- 229910001507 metal halide Inorganic materials 0.000 claims description 4
- 150000005309 metal halides Chemical class 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 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図は本考案の一実施例を示す液晶プロジエ
クタの光学系構成図、第２図は他の実施例を示す
液晶プロジエクタの光学系構成図である。
１……メイン光源（メタルハライドランプ）、
２……補助光源（ハロゲンランプ等）、３……ビ
ームスプリツタ、４，５，６……液晶ライトバル
ブ、１３……投写レンズ、２３，２４，２５……
液晶ライトバルブ、２６，２７，２８……投写レ
ンズ。
FIG. 1 is a block diagram of an optical system of a liquid crystal projector showing one embodiment of the present invention, and FIG. 2 is a block diagram of an optical system of a liquid crystal projector showing another embodiment. 1... Main light source (metal halide lamp),
2... Auxiliary light source (halogen lamp etc.), 3... Beam splitter, 4, 5, 6... Liquid crystal light valve, 13... Projection lens, 23, 24, 25...
Liquid crystal light valve, 26, 27, 28...projection lens.
Claims (1)
学系により照明し、この画像を投写レンズによつ
てスクリーンに拡大投写する液晶プロジエクタに
おいて、 前記照明光学系の光源として、メタルハライド
ランプによるメイン光源と、始動特性および再始
動特性の早い始動時および再始動時用の補助光源
との２つの光源を設けたことを特徴とする液晶プ
ロジエクタ。 (2) 電源投入時に、前記メイン光源のメタルハ
ライドランプが点灯安定状態となる一定時間経過
後に前記補助光源が自動的にオフとなるようにし
たことを特徴とする請求項１記載の液晶プロジエ
クタ。 (3) 一たん電源を切つた後まもなくの再電源投
入時に、前記メイン光源のメタルハライドランプ
が再点灯安定状態となる一定時間経過後に前記補
助光源が自動的にオフとなるようにしたことを特
徴とする請求項１記載の液晶プロジエクタ。[Claims for Utility Model Registration] (1) In a liquid crystal projector that illuminates an image formed by a liquid crystal light valve with an illumination optical system and enlarges and projects this image onto a screen using a projection lens, as a light source of the illumination optical system; A liquid crystal projector characterized in that it is provided with two light sources: a main light source using a metal halide lamp, and an auxiliary light source for starting and restarting with quick starting and restarting characteristics. (2) The liquid crystal projector according to claim 1, wherein when the power is turned on, the auxiliary light source is automatically turned off after a certain period of time in which the metal halide lamp as the main light source reaches a stable lighting state. (3) When the power is turned on again shortly after the power is once turned off, the auxiliary light source is automatically turned off after a certain period of time has elapsed during which the metal halide lamp serving as the main light source is stable again. 2. A liquid crystal projector according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7410590U JPH0433034U (en) | 1990-07-12 | 1990-07-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7410590U JPH0433034U (en) | 1990-07-12 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433034U true JPH0433034U (en) | 1992-03-18 |
Family
ID=31613509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7410590U Pending JPH0433034U (en) | 1990-07-12 | 1990-07-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433034U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049659A1 (en) * | 2005-10-26 | 2007-05-03 | Matsushita Electric Industrial Co., Ltd. | Method for lighting a plurality of high-pressure discharge lamps, its lighting device, lamp system and projection image display |
| JP2009042352A (en) * | 2007-08-07 | 2009-02-26 | Seiko Epson Corp | Control system, projector, program, and information storage medium |
| JP2009301052A (en) * | 2009-09-14 | 2009-12-24 | Seiko Epson Corp | Projector and control method |
-
1990
- 1990-07-12 JP JP7410590U patent/JPH0433034U/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049659A1 (en) * | 2005-10-26 | 2007-05-03 | Matsushita Electric Industrial Co., Ltd. | Method for lighting a plurality of high-pressure discharge lamps, its lighting device, lamp system and projection image display |
| JP2009042352A (en) * | 2007-08-07 | 2009-02-26 | Seiko Epson Corp | Control system, projector, program, and information storage medium |
| US7931378B2 (en) | 2007-08-07 | 2011-04-26 | Seiko Epson Corporation | Control system, projector, program, and information storage medium |
| JP2009301052A (en) * | 2009-09-14 | 2009-12-24 | Seiko Epson Corp | Projector and control method |
| JP4573063B2 (en) * | 2009-09-14 | 2010-11-04 | セイコーエプソン株式会社 | Projector and control method |
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