KR0147214B1 - 프로젝터의 광량제어장치 - Google Patents
프로젝터의 광량제어장치Info
- Publication number
- KR0147214B1 KR0147214B1 KR1019940024016A KR19940024016A KR0147214B1 KR 0147214 B1 KR0147214 B1 KR 0147214B1 KR 1019940024016 A KR1019940024016 A KR 1019940024016A KR 19940024016 A KR19940024016 A KR 19940024016A KR 0147214 B1 KR0147214 B1 KR 0147214B1
- Authority
- KR
- South Korea
- Prior art keywords
- projector
- control signal
- unit
- light quantity
- signal
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0238—Details making use of sensor-related data, e.g. for identification of sensor or optical parts
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Projection Apparatus (AREA)
Abstract
Description
Claims (4)
- 줌잉렌즈를 구비한 프로젝터에 있어서, 상기 줌잉렌즈의 이동에 따라 가변되는 신호를 출력하는 줌잉상태 검출부;줌잉 위치에 상응하는 복숙의 데이터를 저장하는 메모리;상기 줌잉상태 검출부의 출력신호와 메모리의 출력신호를 비교하는 비교부;상기 비교부에서 출력되는 신호에 의해 광량제어신호를 발생하는 광량제어신호 발생부;상기 광량제어신호 발생부의 제어신호에 의해 램프의 광량을 조절하는 광량조절부를 포함하여 구성되는 것을 특징으로 하는 프로젝터의 광량제어장치.
- 제1항에 있어서, 줌잉상태 검출부는 줌잉렌즈의 외면부에 위치하여 화각(畵角)을 조정하는 줌링, 상기 줌링에 맞물려 회전하는 줌기어, 일전압원과 접지단에 접속되어 상기 줌기어의 위치상태에 따라 가변하는 출력값을 갖는 가변저항을 포함하여 구성되는 것을 특징으로 하는 프로젝터의 광량제어장치.
- 제1항에 있어서, 광량조절부는 램프를 구동하기 위한 전원을 공급하는 주전원공급부, 상기 주전원 공급부에서 입력되는 전압을 휘도제어신호 산출부에서 출력되는 제어신호에 의해 변환하는 전압변환부, 상기 전압변환부의 출력신호에 의해 램프를 구동하는 램프구동부를 포함하여 구성되는 것을 특징으로 하는 프로젝터의 광량제어장치.
- 프로젝터 주변밝기를 검출하는 주변밝기 검출센서;휘도레벨에 해당하는 복수개의 데이터를 저장하는 메모리;상기 주변밝기 검출센서의 출력신호와 메모리의 출력신호를 비교하는 비교부, 상기 비교부에서 출력되는 신호에 의해 프로젝터 광량제어신호를 발생하는 광량제어신호 발생부;상기 광량제어신호 발생부의 제어신호에 의해 램프의 광랴을 조절하는 광량조절부를 포함하여 구성되는 것을 특징으로 하는 프로젝터의 광량 제어장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940024016A KR0147214B1 (ko) | 1994-09-23 | 1994-09-23 | 프로젝터의 광량제어장치 |
US08/532,322 US5658062A (en) | 1994-09-23 | 1995-09-22 | Light amount controlling apparatus and method for projector |
DE19535295A DE19535295A1 (de) | 1994-09-23 | 1995-09-22 | Lichtmengensteuervorrichtung und zugehöriges Verfahren für einen Projektor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940024016A KR0147214B1 (ko) | 1994-09-23 | 1994-09-23 | 프로젝터의 광량제어장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960013014A KR960013014A (ko) | 1996-04-20 |
KR0147214B1 true KR0147214B1 (ko) | 1998-09-15 |
Family
ID=19393349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940024016A KR0147214B1 (ko) | 1994-09-23 | 1994-09-23 | 프로젝터의 광량제어장치 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5658062A (ko) |
KR (1) | KR0147214B1 (ko) |
DE (1) | DE19535295A1 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970022484A (ko) * | 1995-10-17 | 1997-05-28 | 정몽원 | 오버 헤드 프로젝트의 광량 조절장치 |
KR100547972B1 (ko) * | 1998-05-04 | 2006-04-14 | 엘지전자 주식회사 | 프로젝터 |
CN108761980A (zh) * | 2018-04-19 | 2018-11-06 | 苏州佳世达光电有限公司 | 一种投影装置 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999045714A1 (en) * | 1998-03-06 | 1999-09-10 | Matsushita Electric Industrial Co., Ltd. | Lcd projector |
US6467911B1 (en) * | 1998-10-08 | 2002-10-22 | Minolta Co., Ltd. | Projector and lamp unit |
JP4588230B2 (ja) * | 2001-02-27 | 2010-11-24 | 三菱電機株式会社 | 投射型映像表示装置 |
WO2002089106A1 (fr) * | 2001-04-25 | 2002-11-07 | Matsushita Electric Industrial Co., Ltd. | Appareil et procede d'affichage video |
JP2004037676A (ja) * | 2002-07-01 | 2004-02-05 | Toshiba Corp | 投射型表示装置 |
JP2006162653A (ja) * | 2004-12-02 | 2006-06-22 | Olympus Corp | 光源装置及びプロジェクタ |
CN101218468B (zh) * | 2005-07-08 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | 具有用于照明物体的照明器件的光学设备 |
KR20080036190A (ko) * | 2005-07-08 | 2008-04-25 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 전기적으로 변경가능한 산란 패턴을 갖는 광을 생성하는라이트 모듈 및 이 모듈의 다목적 라이트로서의 용도 |
JP2007293195A (ja) * | 2006-04-27 | 2007-11-08 | Necディスプレイソリューションズ株式会社 | 自動輝度調整機構を有するプロジェクタと自動輝度調整方法 |
US11193634B2 (en) * | 2012-07-03 | 2021-12-07 | Tseng-Lu Chien | LED and/or laser light source or bulb for light device |
CA2789607C (en) * | 2010-02-16 | 2018-05-01 | Midmark Corporation | Led light for examinations and procedures |
JP5999959B2 (ja) * | 2012-04-05 | 2016-09-28 | 三菱電機株式会社 | 投射型プロジェクタ |
JP5984482B2 (ja) | 2012-04-26 | 2016-09-06 | 三菱電機株式会社 | 投射型プロジェクタ |
CN102662295B (zh) * | 2012-05-18 | 2015-01-21 | 海信集团有限公司 | 调节投影设备的投影显示画面尺寸的方法和装置 |
US9195124B2 (en) * | 2013-12-20 | 2015-11-24 | Plantronics, Inc. | Automatic projector safety protocols |
JP6701750B2 (ja) * | 2016-01-20 | 2020-05-27 | セイコーエプソン株式会社 | プロジェクターおよびその制御方法 |
CN111664366B (zh) | 2019-03-06 | 2023-04-14 | 朗德万斯公司 | 具有可变光束角度和固定的中心光束烛光功率的照明设备 |
DE102020109190A1 (de) * | 2020-04-02 | 2021-10-07 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Scheinwerfersystem, Scheinwerfer, Optikkomponente hierfür und Verfahren zum Ermitteln einer räumlichen Lichtverteilung derselben |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3833297A (en) * | 1972-03-13 | 1974-09-03 | Sears Roebuck & Co | Automatic brightness control for photographic projectors |
US4161756A (en) * | 1976-03-19 | 1979-07-17 | Jos. Schneider & Co. Optische Werke | Control system for varifocal objective |
DE2827174A1 (de) * | 1978-06-21 | 1980-01-10 | Josef Weber | Projektor mit einer helligkeitssteuerung |
US4278334A (en) * | 1978-12-01 | 1981-07-14 | Minolta Camera Kabushiki Kaisha | Illumination control apparatus for projection device |
GB2107899B (en) * | 1981-10-20 | 1985-12-11 | Mitutoyo Mfg Co Ltd | Projecting apparatus |
DE3629771A1 (de) * | 1986-09-02 | 1988-03-03 | Demolux | Overhead-projektor |
JPH0273241A (ja) * | 1988-09-08 | 1990-03-13 | Hitachi Ltd | 投射形ディスプレイのスクリーン明るさ制御方法及び装置 |
US5136397A (en) * | 1989-10-31 | 1992-08-04 | Seiko Epson Corporation | Liquid crystal video projector having lamp and cooling control and remote optics and picture attribute controls |
JPH04287574A (ja) * | 1991-03-18 | 1992-10-13 | Fuji Photo Film Co Ltd | 液晶ファインダ付きビデオカメラ |
-
1994
- 1994-09-23 KR KR1019940024016A patent/KR0147214B1/ko not_active IP Right Cessation
-
1995
- 1995-09-22 DE DE19535295A patent/DE19535295A1/de not_active Withdrawn
- 1995-09-22 US US08/532,322 patent/US5658062A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970022484A (ko) * | 1995-10-17 | 1997-05-28 | 정몽원 | 오버 헤드 프로젝트의 광량 조절장치 |
KR100547972B1 (ko) * | 1998-05-04 | 2006-04-14 | 엘지전자 주식회사 | 프로젝터 |
CN108761980A (zh) * | 2018-04-19 | 2018-11-06 | 苏州佳世达光电有限公司 | 一种投影装置 |
Also Published As
Publication number | Publication date |
---|---|
KR960013014A (ko) | 1996-04-20 |
US5658062A (en) | 1997-08-19 |
DE19535295A1 (de) | 1996-03-28 |
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