DE3624188C2 - - Google Patents

Info

Publication number
DE3624188C2
DE3624188C2 DE3624188A DE3624188A DE3624188C2 DE 3624188 C2 DE3624188 C2 DE 3624188C2 DE 3624188 A DE3624188 A DE 3624188A DE 3624188 A DE3624188 A DE 3624188A DE 3624188 C2 DE3624188 C2 DE 3624188C2
Authority
DE
Germany
Prior art keywords
lens
liquid crystal
light
display panel
optical axis
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.)
Expired - Lifetime
Application number
DE3624188A
Other languages
German (de)
English (en)
Other versions
DE3624188A1 (de
Inventor
Yasuyuki Tejima
Ryota Tokio/Tokyo Jp Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
Asahi Kogaku Kogyo Co Ltd
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 Casio Computer Co Ltd, Asahi Kogaku Kogyo Co Ltd filed Critical Casio Computer Co Ltd
Publication of DE3624188A1 publication Critical patent/DE3624188A1/de
Application granted granted Critical
Publication of DE3624188C2 publication Critical patent/DE3624188C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
DE19863624188 1985-07-18 1986-07-17 Fluessigkristall- videoprojektionsanzeigevorrichtung Granted DE3624188A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60159239A JPH0623817B2 (ja) 1985-07-18 1985-07-18 液晶投写型画像表示装置

Publications (2)

Publication Number Publication Date
DE3624188A1 DE3624188A1 (de) 1987-02-12
DE3624188C2 true DE3624188C2 (forum.php) 1991-03-28

Family

ID=15689383

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863624188 Granted DE3624188A1 (de) 1985-07-18 1986-07-17 Fluessigkristall- videoprojektionsanzeigevorrichtung

Country Status (4)

Country Link
US (1) US4936657A (forum.php)
JP (1) JPH0623817B2 (forum.php)
DE (1) DE3624188A1 (forum.php)
GB (1) GB2179484B (forum.php)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737107A1 (de) * 1997-08-26 1999-03-18 Fresnel Optics Gmbh Optische Anordnung bestehend aus mindestens zwei Fresnellinsen und deren Verwendung
DE102007036492A1 (de) * 2007-08-01 2009-02-05 Trw Automotive Electronics & Components Gmbh & Co. Kg Optische Sensorvorrichtung
DE102008020171A1 (de) * 2008-04-22 2009-10-29 Trw Automotive Electronics & Components Gmbh Optische Sensorvorrichtung

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711540A1 (de) * 1987-04-06 1988-10-27 Demolux Wandler fuer elektrische signale in optisch zu projizierende bilder, insbesondere fuer video-signale
JPH05948Y2 (forum.php) * 1987-06-18 1993-01-12
JP2537951B2 (ja) * 1988-02-25 1996-09-25 松下電器産業株式会社 液晶ライトバルブ光学装置
DE8812322U1 (de) * 1988-09-29 1988-12-08 Rohrer, Emil, 8901 Königsbrunn Abdeckung von Beleuchtungseinrichtungen an Kraftfahrzeugen
KR920007165B1 (ko) * 1989-01-31 1992-08-27 주식회사 금성사 비데오 프린터 겸용의 액정프로젝터
JP2815910B2 (ja) * 1989-07-19 1998-10-27 シャープ株式会社 投影形画像表示装置
DE4007505A1 (de) * 1990-03-09 1991-09-12 Grunwald Projektoren Ag Projektor fuer die farbprojektion von mittels lcd-modulen erzeugten bildern
JPH0444022A (ja) * 1990-06-12 1992-02-13 Nippon Avionics Co Ltd 液晶投射装置
JPH0444023A (ja) * 1990-06-12 1992-02-13 Nippon Avionics Co Ltd 液晶投射装置
DE4228962C2 (de) * 1991-08-30 1996-08-14 Kansei Kk Optisches System zum Vergrößern eines Anzeigefeldes
US5247390A (en) * 1991-11-05 1993-09-21 Aharon Zeev Hed Lightweight low-loss refractive light diffusion system
JP2861547B2 (ja) * 1991-11-15 1999-02-24 松下電器産業株式会社 投写型表示装置
US5459592A (en) * 1992-04-24 1995-10-17 Sharp Kabushiki Kaisha Projection display system including a collimating tapered waveguide or lens with the normal to optical axis angle increasing toward the lens center
CA2097109C (en) * 1992-06-01 2000-01-11 Shozo Kokawa Liquid crystal display
US5347433A (en) * 1992-06-11 1994-09-13 Sedlmayr Steven R Collimated beam of light and systems and methods for implementation thereof
US5347644A (en) * 1992-06-11 1994-09-13 Sedlmayr Steven R Three-dimensional image display device and systems and methods for implementation thereof
US5526146A (en) * 1993-06-24 1996-06-11 International Business Machines Corporation Back-lighting system for transmissive display
US5434407A (en) * 1993-08-23 1995-07-18 Gentex Corporation Automatic rearview mirror incorporating light pipe
JPH0764042A (ja) * 1993-08-24 1995-03-10 Hitachi Ltd 超広角液晶プロジェクタシステム
US5483254A (en) * 1993-12-28 1996-01-09 Dimensional Displays Inc. 3D video display devices
GB9409707D0 (en) * 1994-05-14 1994-07-06 Philips Electronics Uk Ltd Liquid crystal projection display systems
US5467207A (en) * 1994-07-06 1995-11-14 Prolux Corporation LCD projection system which aligns the larger beam spread angle of the light source with the larger acceptance angle of the light valve and a nonimaging reflector for an illumination system
JP3445404B2 (ja) * 1994-08-12 2003-09-08 ペンタックス株式会社 投影レンズ及び投影装置
JP3380083B2 (ja) * 1994-08-12 2003-02-24 ペンタックス株式会社 投影装置及び投影装置のピント調整方法
JP3753758B2 (ja) * 1995-05-24 2006-03-08 フジノン株式会社 液晶ビデオプロジェクタ
US6380994B1 (en) 1995-07-28 2002-04-30 Fujitsu Limited Fresnel lens and liquid crystal display device
US5751387A (en) * 1995-07-28 1998-05-12 Fujitsu Limited Fresnel lens and liquid crystal display device
US5975703A (en) 1996-09-30 1999-11-02 Digital Optics International Image projection system
JPH1164787A (ja) * 1997-08-21 1999-03-05 Seiko Epson Corp 投写型表示装置
JPH11194266A (ja) * 1997-10-29 1999-07-21 Fuji Photo Optical Co Ltd 広角レンズ
EP0924557B1 (en) * 1997-12-16 2007-04-18 Kuraray Co., Ltd. Rear projection screen incorporating a prism
US6389206B1 (en) * 1998-07-16 2002-05-14 Brookhaven Science Associates Light redirective display panel and a method of making a light redirective display panel
US6273570B1 (en) * 1999-10-21 2001-08-14 Clarity Visual Systems, Inc. Compact light path and package for liquid crystal projection displays
US6275340B1 (en) 2000-01-21 2001-08-14 Rayford K. Brown Anesthetic alleviation by sensory stimulation
JP4083683B2 (ja) * 2001-09-07 2008-04-30 マーディル， インコーポレイテッド 外部心臓固定のための方法および装置
DE10392669T5 (de) 2002-05-17 2005-07-07 Ccs Inc. Lichtemissionsdiodeneinheit und Verfahren zum Herstellen einer Lichtemissionsdiodeneinheit
US7090354B2 (en) * 2002-08-16 2006-08-15 Infocus Corporation Projection device and screen
US7009765B2 (en) * 2002-08-16 2006-03-07 Infocus Corporation Wide angle lens system having a distorted intermediate image
US7088507B2 (en) * 2002-08-16 2006-08-08 Infocus Corporation Rear projection display
US7175287B2 (en) * 2002-08-16 2007-02-13 Infocus Corporation Wide angle projection lens
US6896375B2 (en) * 2002-08-16 2005-05-24 Infocus Corporation Rear projection display device having multiple mirrors that are substantially parallel to a screen
US7088509B2 (en) * 2002-08-16 2006-08-08 Infocus Corporation Laminate screen for display device
US7341353B2 (en) * 2002-08-16 2008-03-11 Infocus Corporation Variable fresnel screen for use in projection device
US7777949B2 (en) * 2002-08-16 2010-08-17 Seiko Epson Corporation Laminate screen for a display device
US7150537B2 (en) 2002-08-16 2006-12-19 Infocus Corporation Projection television device and screen
US7102820B2 (en) * 2002-08-16 2006-09-05 Infocus Corporation Flat valley fresnel lens for a display device
US20050041307A1 (en) * 2003-07-22 2005-02-24 Stephen Barone Directed Fresnel lenses
JP4293857B2 (ja) * 2003-07-29 2009-07-08 シチズン電子株式会社 フレネルレンズを用いた照明装置
US7080910B2 (en) * 2003-08-19 2006-07-25 Infocus Corporation Method and system for a thermal architecture and user adjustable keystone in a display device
US7095558B2 (en) * 2003-09-01 2006-08-22 Hitachi, Ltd. Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
US7259912B2 (en) * 2004-01-06 2007-08-21 Infocus Corporation Fresnel lens having reduced distortions
US7050228B2 (en) * 2004-02-25 2006-05-23 Infocus Corporation Environmentally-adaptive frame assembly
JP4636811B2 (ja) * 2004-04-27 2011-02-23 株式会社エンプラス 面光源装置、画像表示装置及び光束制御板
JP5011676B2 (ja) * 2005-08-12 2012-08-29 株式会社日立製作所 表示装置を備える機器
CN100501846C (zh) * 2005-08-26 2009-06-17 鸿富锦精密工业（深圳）有限公司 光学模组及采用所述光学模组的光学记录/再现装置
CN100489971C (zh) * 2005-09-02 2009-05-20 鸿富锦精密工业（深圳）有限公司 光学模组及采用所述光学模组的光学记录/再现装置
JP2011512006A (ja) 2008-01-30 2011-04-14 デジタル オプティクス インターナショナル，リミティド ライアビリティ カンパニー 薄型照明システム
US8721149B2 (en) 2008-01-30 2014-05-13 Qualcomm Mems Technologies, Inc. Illumination device having a tapered light guide
KR101409308B1 (ko) * 2008-01-30 2014-07-02 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 광학 상호접속기
KR101101538B1 (ko) 2008-04-22 2012-01-02 테에르베 오토모티브 일렉트로닉스 운트 콤포넌츠 게엠베하 광 센서 장치
KR20100043972A (ko) * 2008-10-21 2010-04-29 삼성전자주식회사 광신호 집광기와 광 수신기
JP2012134309A (ja) * 2010-12-21 2012-07-12 Panasonic Corp 紫外線照射装置
US9588264B2 (en) * 2011-10-12 2017-03-07 Corning Incorporated Bezel-concealing display covers and display devices
DE102013204476B4 (de) * 2013-03-14 2022-07-07 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Optisches Element und optoelektronisches Bauelement mit optischem Element
IL226434A (en) * 2013-05-19 2015-02-26 Elbit Systems Ltd Electronic display with reduced refunds
WO2015068200A1 (ja) * 2013-11-05 2015-05-14 Ｎｅｃディスプレイソリューションズ株式会社 プロジェクタ用レンズカバー
GB2523346A (en) * 2014-02-20 2015-08-26 Polymer Optics Ltd Free form fresnel lens
DE102015008298A1 (de) * 2015-06-29 2016-12-29 Hella Kgaa Hueck & Co. Sensorvorrichtung zum Erfassen von Feuchtigkeit auf einer Scheibe und Kraftfahrzeug
WO2017023057A1 (ko) * 2015-08-04 2017-02-09 엘지이노텍(주) 렌즈, 광학 장치 및 이를 포함하는 가상 현실 구현을 위한 헤드 장착 표시 장치
US10215890B2 (en) * 2016-05-18 2019-02-26 Google Llc Optical field curvature control using multi-layer Fresnel lens in VR display
WO2018088342A1 (ja) * 2016-11-09 2018-05-17 シャープ株式会社 表示装置及びヘッドマウントディスプレイ
KR101875380B1 (ko) * 2017-01-24 2018-07-06 주식회사 옵티맥 발광 패키지
CN108469642B (zh) 2018-03-29 2021-03-12 京东方科技集团股份有限公司 一种棱镜膜、背光模组及显示装置
CN113126292A (zh) * 2019-12-31 2021-07-16 成都理想境界科技有限公司 一种近眼显示系统
CA3130378A1 (en) 2020-09-10 2022-03-10 Saco Technologies Inc. Method for transmitting control instructions to a plurality of receivers and receiver adapted to receive a light pixel carrying the control instructions
DE102020006276A1 (de) 2020-10-13 2022-04-14 Helge Moritz Regenbogen-Fresnel-Prisma Dispersives, flaches Element zur Erzeugung eines künstlichen und gebogenen Regenbogens
CN116203781A (zh) * 2023-03-20 2023-06-02 深圳市精益模具有限公司 一种具有偏轴角度的投影光路及投影仪

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825684A (en) * 1956-07-26 1959-12-16 Askania Werke Ag Optical projection apparatus
US3064523A (en) * 1960-02-24 1962-11-20 Bausch & Lomb Illuminating arrangement for optical devices
DE2017615C3 (de) * 1970-04-13 1974-12-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zum Schalten der Intensität gerichteter Lichtstrahlenbündel mit hohem Kontrast
US3844650A (en) * 1972-05-22 1974-10-29 Minnesota Mining & Mfg Projector
US3764211A (en) * 1972-08-25 1973-10-09 Eastman Kodak Co Display system capable of selective annotation
US3887791A (en) * 1973-11-08 1975-06-03 Texas Instruments Inc Prismatic display window for a calculator
DD110366A1 (forum.php) * 1974-03-05 1974-12-12
DE2619144A1 (de) * 1976-04-30 1977-11-17 Licentia Gmbh Vorrichtung zur steuerung eines lichtstrahlenbuendels
CA1084726A (en) * 1978-01-13 1980-09-02 Earl J. Fjarlie Scanning spectrometer
JPS55153917A (en) * 1979-05-18 1980-12-01 Canon Inc Projection device
JPS5616101A (en) * 1979-07-17 1981-02-16 Akira Nadaguchi Fresnel condenser
JPS5754902A (en) * 1980-09-19 1982-04-01 Tokuji Suzuki Orthogonal double fresnel lens plate
US4372639A (en) * 1981-06-03 1983-02-08 Hughes Aircraft Company Directional diffusing screen
US4436392A (en) * 1983-01-03 1984-03-13 Minnesota Mining And Manufacturing Company Distortion correction for an overhead projector system
EP0127701A1 (en) * 1983-06-07 1984-12-12 Datelcare B.V. Apparatus for projecting a light image
JPS60129705A (ja) * 1983-12-16 1985-07-11 Konishiroku Photo Ind Co Ltd 多焦点集光レンズ
US4613207A (en) * 1984-05-08 1986-09-23 Manchester R & D Partnership Liquid crystal projector and method
DE8411656U1 (de) * 1984-04-13 1984-10-11 Demolux Gmbh & Co Kg, 6070 Langen Overhead-projektor
US4601545A (en) * 1984-05-16 1986-07-22 Kern Seymour P Variable power lens system
EP0192023A3 (en) * 1985-02-21 1986-10-08 Casio Computer Company Limited Liquid crystal projector
US4671634A (en) * 1985-03-19 1987-06-09 Casio Computer Co., Ltd. Liquid crystal projector
JPH0535388Y2 (forum.php) * 1985-07-29 1993-09-08
US4770525A (en) * 1986-03-24 1988-09-13 Casio Computer Co., Ltd. Liquid crystal projector
JP2516922B2 (ja) * 1986-07-04 1996-07-24 株式会社日立製作所 液晶表示装置
CA1278080C (en) * 1986-08-20 1990-12-18 Yasuo Yamagishi Projection-type multi-color liquid crystal display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19737107A1 (de) * 1997-08-26 1999-03-18 Fresnel Optics Gmbh Optische Anordnung bestehend aus mindestens zwei Fresnellinsen und deren Verwendung
DE19737107C2 (de) * 1997-08-26 2001-02-08 Fresnel Optics Gmbh Optische Anordnung bestehend aus mindestens zwei Fresnellinsen und Projektions- bzw. Displayvorrichtung mit dieser Anordnung
DE102007036492A1 (de) * 2007-08-01 2009-02-05 Trw Automotive Electronics & Components Gmbh & Co. Kg Optische Sensorvorrichtung
DE102007036492B4 (de) * 2007-08-01 2009-07-30 Trw Automotive Electronics & Components Gmbh & Co. Kg Optische Sensorvorrichtung
DE102008020171A1 (de) * 2008-04-22 2009-10-29 Trw Automotive Electronics & Components Gmbh Optische Sensorvorrichtung
DE102008020171B4 (de) * 2008-04-22 2010-08-05 Trw Automotive Electronics & Components Gmbh Optische Sensorvorrichtung

Also Published As

Publication number Publication date
JPS6219834A (ja) 1987-01-28
GB8617309D0 (en) 1986-08-20
GB2179484A (en) 1987-03-04
GB2179484B (en) 1990-03-28
JPH0623817B2 (ja) 1994-03-30
DE3624188A1 (de) 1987-02-12
US4936657A (en) 1990-06-26

Similar Documents

Publication Publication Date Title
DE3624188C2 (forum.php)
DE3529026C2 (forum.php)
DE60102310T2 (de) Flüssigkristall-Projektor mit Polarisations-Wandler
EP2120025B1 (de) Optische Sensorvorrichtung zur Detektion von Umgebungslicht
DE69503520T2 (de) Projektor mit mehrfacher lichtquelle
DE69033501T2 (de) Beleuchtungskörper mit Linse zur Strahlformung
DE69517220T2 (de) Optisches Projektionssystem
DE69608066T2 (de) Optisches Gerät zum Abstandsmessen
DE2410485B2 (de) Prismensystem zur farbtrennung in drei farbkomponenten
DE19732657A1 (de) Blitzgerät, dessen Emissionswinkel geändert werden kann
DE3786652T2 (de) Transmissions-Overhead-Projektor mit reduzierter Höhe.
DE3143137C2 (de) Reflexions-ausblendende, fokussierende optische Vorrichtung
DE1497507C3 (de) Optische Vorrichtung zum Projizieren einer Abbildung eines Objektes
DE3644124C2 (forum.php)
DE2136071C3 (de) Entfernungsmeßsystem für eine Kamera
EP3211470A1 (de) Vorrichtung zur beleuchtung einer zielmarke
DE1961940C3 (de) Projektionsanordnung für Farbfernsehen
DE202023105334U1 (de) Optische Pfadanordnung mit variabler Länge
DE3246832A1 (de) Strahlteiler
DE69605469T2 (de) Kompakter Rückprojektionsvideomonitor bzw. -fernseher
EP1007992B1 (de) Optische anordnung bestehend aus mindestens zwei fresnellinsen und deren verwendung
DE3739697C1 (en) Device for segmenting an image field
DE2738658C3 (de) Mikrobildprojektor
EP1735657A1 (de) Optische vorrichtung zum aufbereiten eines strahles, insbesondere eines laserstrahles
DE1962223A1 (de) Optische Vorrichtung

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PENTAX CORP., TOKIO/TOKYO, JP

Owner name: CASIO COMPUTER CO., LTD., TOKIO/TOKYO, JP

8339 Ceased/non-payment of the annual fee