KR910020485A - 오버 헤드 프로젝터 - Google Patents

오버 헤드 프로젝터 Download PDF

Info

Publication number
KR910020485A
KR910020485A KR1019910008293A KR910008293A KR910020485A KR 910020485 A KR910020485 A KR 910020485A KR 1019910008293 A KR1019910008293 A KR 1019910008293A KR 910008293 A KR910008293 A KR 910008293A KR 910020485 A KR910020485 A KR 910020485A
Authority
KR
South Korea
Prior art keywords
light
image
changing element
overhead projector
writing
Prior art date
Application number
KR1019910008293A
Other languages
English (en)
Other versions
KR930009521B1 (ko
Inventor
이쯔오 다까나시
신따로 나까가끼
쯔또 아사꾸라
마사또 후루야
요시히사 고야마
유지 우찌야마
Original Assignee
보조 다꾸로
니뽕 빅터 가부시끼가이샤
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 by 보조 다꾸로, 니뽕 빅터 가부시끼가이샤 filed Critical 보조 다꾸로
Publication of KR910020485A publication Critical patent/KR910020485A/ko
Application granted granted Critical
Publication of KR930009521B1 publication Critical patent/KR930009521B1/ko

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
    • 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
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/135—Liquid crystal cells structurally associated with a photoconducting or a ferro-electric layer, the properties of which can be optically or electrically varied

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

내용 없음

Description

오버 헤드 프로젝터
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 관계하는 오버 헤드 프로젝터의 제1실시예를 도시하는 구성도, 제2도는 광-광 변환 소자의 구성예를 도시하는 설명도, 제3도는 본 발명의 제2실시예를 도시하는 구성도.

Claims (2)

  1. 소망되는 원고의 화상을 영사막에 투영하는 오버 헤드 프로젝터에 있어서, 화상의 기입과 기입된 화상의 판독을 행할수 있는 광-광 변화소자와 독립한 조명 조건에서 상기 광-광 변화소자에서 기입 화상을 판독해서 상기 스크린에 투영하는 제2의 투사 수단을 구비한 것을 특징으로 하는 오버 헤드 프로젝터.
  2. 제1항에 있어서, 상기 광-광 변환 소자에서의 판독화상을 판독 출력하는 판독 출력수단과, 이것에 의해서 판독된 화상을 포함하는 정보를 처리하는 데이터 처리수단과, 이것에 의해서 처리된 화상을 상기 광-광 변화소자에 기입하는 기록 수단을 구비한 것을 특징으로 하는 오버 헤드 프로젝터.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019910008293A 1990-05-31 1991-05-23 오버 헤드 프로젝터 KR930009521B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2143995A JPH0436742A (ja) 1990-05-31 1990-05-31 オーバヘッドプロジェクタ
JP143995 1990-05-31

Publications (2)

Publication Number Publication Date
KR910020485A true KR910020485A (ko) 1991-12-20
KR930009521B1 KR930009521B1 (ko) 1993-10-06

Family

ID=15351865

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910008293A KR930009521B1 (ko) 1990-05-31 1991-05-23 오버 헤드 프로젝터

Country Status (5)

Country Link
US (1) US5214457A (ko)
EP (1) EP0459518B1 (ko)
JP (1) JPH0436742A (ko)
KR (1) KR930009521B1 (ko)
DE (1) DE69121017T2 (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325137A (en) * 1991-08-28 1994-06-28 Victor Company Of Japan, Ltd. Overhead projector with a spatial light modulator
US5302985A (en) * 1992-03-31 1994-04-12 Minnesota Mining And Manufacturing Company Overhead projector for LCD panel
US5404399A (en) * 1992-10-13 1995-04-04 Finamore; Sandro Telephone visual signaling device
US5414481A (en) * 1993-03-18 1995-05-09 Ricoh Company, Ltd. Image projector and image forming apparatus for image projection
KR970011202B1 (ko) * 1993-08-31 1997-07-08 삼성항공산업 주식회사 오버 헤드 프로젝터
JP3320219B2 (ja) * 1994-06-01 2002-09-03 株式会社リコー 画像投影装置
US5605390A (en) * 1996-01-25 1997-02-25 Sarif, Inc. Optical projector
EP0895115B1 (en) * 1997-07-29 2005-02-16 Victor Company Of Japan, Ltd. Liquid crystal displaying apparatus
US5993012A (en) * 1998-09-29 1999-11-30 Three-Five Systems, Inc. Optical docking station
AU1091499A (en) * 1997-10-22 1999-05-10 Three-Five Systems, Inc. Optical docking station
US6273567B1 (en) * 1998-09-14 2001-08-14 Arlie R. Conner Compact multi-path LCD projector
US6965460B1 (en) * 2000-08-08 2005-11-15 Hewlett-Packard Development Company, L.P. Method and system for scanning an image using a look-down linear array scanner
TWI272010B (en) * 2005-01-21 2007-01-21 Benq Corp Projector having light-shielding module and image processing method thereof
US8746898B2 (en) * 2012-05-07 2014-06-10 Microvision, Inc. Projector with shutter
JP1618896S (ko) * 2018-02-09 2018-11-26

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912386A (en) * 1974-06-14 1975-10-14 Rca Corp Color image intensification and projection using deformable mirror light valve
US3945721A (en) * 1974-11-22 1976-03-23 International Telephone And Telegraph Corporation Group display system
US4060316A (en) * 1975-02-25 1977-11-29 Xerox Corporation Imaging method
US4019807A (en) * 1976-03-08 1977-04-26 Hughes Aircraft Company Reflective liquid crystal light valve with hybrid field effect mode
US4481531A (en) * 1977-11-03 1984-11-06 Massachusetts Institute Of Technology Microchannel spatial light modulator
US4389096A (en) * 1977-12-27 1983-06-21 Matsushita Electric Industrial Co., Ltd. Image display apparatus of liquid crystal valve projection type
JPS5616149A (en) * 1979-07-19 1981-02-16 Fuji Xerox Co Ltd Picture forming method
JPS6095515A (ja) * 1983-09-26 1985-05-28 テクトロニツクス・インコーポレイテツド カラーフイルタ
JPS6227716A (ja) * 1985-07-29 1987-02-05 Fuji Photo Film Co Ltd 網点形成用ライトバルブ
FR2593295B1 (fr) * 1986-01-20 1989-05-05 Cornuejols Georges Controleur electronique matriciel des parametres d'exposition pour appareil de prise de vues
JPH0670692B2 (ja) * 1988-02-21 1994-09-07 日本ビクター株式会社 光−光変換素子
US4965592A (en) * 1987-05-21 1990-10-23 Brother Kogyo Kabushiki Kaisha Image processing apparatus for reproducing images on projector screen and photosensitive medium
JPH01216332A (ja) * 1988-02-25 1989-08-30 Toshiba Corp Ｏｈｐ装置
JPH0248112A (ja) * 1988-08-09 1990-02-16 Mitsubishi Electric Corp 加工液供給装置
JPH0251288A (ja) * 1988-08-15 1990-02-21 Hitachi Ltd 試料温度制御装置
JPH0297260A (ja) * 1988-09-30 1990-04-09 Mabuchi Motor Co Ltd 直流モータの電機子巻線方法
DE3837710A1 (de) * 1988-11-07 1990-05-10 Statomat Globe Maschf Verfahren und vorrichtung zum ausrichten der abgemantelten enden von rundkabeln
JPH02130499A (ja) * 1988-11-11 1990-05-18 Toshiba Corp サンドクッション部の採取装置
JPH02131221A (ja) * 1988-11-11 1990-05-21 Pioneer Electron Corp 光導電型液昌ライトバルブ
JPH0833548B2 (ja) * 1988-11-30 1996-03-29 シャープ株式会社 液晶表示装置
JPH02301716A (ja) * 1989-05-16 1990-12-13 Victor Co Of Japan Ltd 光―光変換方法及び表示装置
US5071231A (en) * 1990-05-24 1991-12-10 The United States Of America As Represented By The Secretary Of The Air Force Bidirectional spatial light modulator for neural network computers

Also Published As

Publication number Publication date
US5214457A (en) 1993-05-25
DE69121017T2 (de) 1996-12-19
EP0459518B1 (en) 1996-07-24
KR930009521B1 (ko) 1993-10-06
DE69121017D1 (de) 1996-08-29
EP0459518A1 (en) 1991-12-04
JPH0436742A (ja) 1992-02-06

Similar Documents

Publication Publication Date Title
KR910020485A (ko) 오버 헤드 프로젝터
KR930701064A (ko) 라인 메모리 및 제어 시스템
KR890017977A (ko) 영상 신호의 방식변환장치
KR920022157A (ko) 정보검색 시스템
KR900004171A (ko) 카메라 일체형 비디오 레코더
KR880000428B1 (ko) 전자 흑판장치
KR920008660A (ko) 화상표시 제어장치
KR910013870A (ko) 캠코더의 편집시스템
KR900005795A (ko) 화상독해장치
KR910015165A (ko) 매뉴얼 쉬트 작성 및 이용장치
KR920003162A (ko) 다포트 캐시 메모리
KR900015029A (ko) 화상판독장치
KR920010605A (ko) 데이타 디스크 및 데이타 검색방법
KR880011686A (ko) 전자화일링장치
KR950033868A (ko) 데이타 처리 장치
KR910009085A (ko) 영상신호처리 장치
KR910013192A (ko) 디지탈 vtr
JPS60109153U (ja) 図形読取装置
KR880013398A (ko) 화상정보 표시장치
KR920000344A (ko) 기록매체를 사용한 운동시스템
KR970011994A (ko) 사진 인화장치
JPS63192766U (ko)
JPS6230099A (ja) 電子黒板
KR830004610A (ko) 화상주사기록(畵像走査計錄) 장치에서의 화상 집합방법
KR920015856A (ko) 전자카메라 시스템의 비디오 및 오디오신호기록재생장치

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19980930

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee