DE69826950D1 - Dunkelfeld-Projektionsanzeigegerät - Google Patents

Dunkelfeld-Projektionsanzeigegerät

Info

Publication number
DE69826950D1
DE69826950D1 DE1998626950 DE69826950T DE69826950D1 DE 69826950 D1 DE69826950 D1 DE 69826950D1 DE 1998626950 DE1998626950 DE 1998626950 DE 69826950 T DE69826950 T DE 69826950T DE 69826950 D1 DE69826950 D1 DE 69826950D1
Authority
DE
Germany
Prior art keywords
display device
projection display
dark field
field projection
dark
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 - Fee Related
Application number
DE1998626950
Other languages
English (en)
Other versions
DE69826950T2 (de
Inventor
Michael Geraint Robinson
Craig Tombling
Duncan James Anderson
Jason Slack
Robert George Watling Brown
Haruhisa Takiguchi
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.)
Sharp Corp
Original Assignee
Sharp Corp
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
Priority claimed from GB9718741A external-priority patent/GB2329036A/en
Priority claimed from GBGB9800018.5A external-priority patent/GB9800018D0/en
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE69826950D1 publication Critical patent/DE69826950D1/de
Application granted granted Critical
Publication of DE69826950T2 publication Critical patent/DE69826950T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
DE69826950T 1997-09-05 1998-08-28 Dunkelfeld-Projektionsanzeigegerät Expired - Fee Related DE69826950T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9718741A GB2329036A (en) 1997-09-05 1997-09-05 Optical system for redistributing optical extent and illumination source
GB9718741 1997-09-05
GB9800018 1998-01-03
GBGB9800018.5A GB9800018D0 (en) 1998-01-03 1998-01-03 Illumination system

Publications (2)

Publication Number Publication Date
DE69826950D1 true DE69826950D1 (de) 2004-11-18
DE69826950T2 DE69826950T2 (de) 2006-02-23

Family

ID=26312176

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69826950T Expired - Fee Related DE69826950T2 (de) 1997-09-05 1998-08-28 Dunkelfeld-Projektionsanzeigegerät

Country Status (4)

Country Link
US (1) US6155688A (de)
EP (1) EP0901031B1 (de)
JP (1) JP3929003B2 (de)
DE (1) DE69826950T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878626A1 (fr) * 2004-12-01 2006-06-02 Thomson Licensing Sa Systeme optique et element optique correspondant
FR2887038A1 (fr) * 2005-06-13 2006-12-15 Thomson Licensing Sa Systeme optique et element optique correspondant
US7940464B2 (en) 2004-12-01 2011-05-10 Thomson Licensing Optical system and corresponding optical element
US20060221459A1 (en) * 2005-04-01 2006-10-05 Sagan Stephen F Optical system for projecting a line of illumination from an array of lasers
KR101091236B1 (ko) * 2010-04-02 2011-12-07 엘지이노텍 주식회사 프로젝터 광학계
DE102012108347A1 (de) * 2012-09-07 2014-03-13 Limo Patentverwaltung Gmbh & Co. Kg Verfahren und Vorrichtung zur Fokussierung von Laserlicht
TWI477883B (zh) * 2013-01-22 2015-03-21 Hon Hai Prec Ind Co Ltd 背投電視的光機裝置
CN110531453B (zh) * 2019-09-29 2020-09-29 中南大学 一种修正单焦点分形波带片的构造方法及其波带片

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296923A (en) * 1965-01-04 1967-01-10 Gen Electric Lenticulated collimating condensing system
GB1353739A (en) * 1970-08-12 1974-05-22 Rank Organisation Ltd Light exposure means for shadow or contact printing
US3732417A (en) * 1971-06-16 1973-05-08 Grimes Manuf Co Square lite projector using prismatic lens
JPS58147708A (ja) * 1982-02-26 1983-09-02 Nippon Kogaku Kk <Nikon> 照明用光学装置
JPS597359A (ja) * 1982-07-02 1984-01-14 Canon Inc 照明装置
EP0201306A3 (de) * 1985-05-08 1989-06-28 Lambda Photometrics Limited Gerät zur Herstellung einer gleichmässigen Beleuchtung auf einer Beleuchtungsstation
US5085506A (en) * 1986-05-09 1992-02-04 Greyhawk Systems, Inc. Apparatus and method of forming and projecting high precision optical images
JPH01287924A (ja) * 1988-03-30 1989-11-20 Hitachi Ltd コヒーレント制御露光装置
NL8801348A (nl) * 1988-05-26 1989-12-18 Philips Nv Belichtingsstelsel.
NL8901077A (nl) * 1989-04-28 1990-11-16 Koninkl Philips Electronics Nv Optische belichtingsstelsel en projectie-apparaat voorzien van een dergelijk stelsel.
US5153773A (en) * 1989-06-08 1992-10-06 Canon Kabushiki Kaisha Illumination device including amplitude-division and beam movements
FR2680882B1 (fr) * 1991-08-06 1993-10-29 Thomson Csf Projecteur d'images a efficacite lumineuse orptimisee.
US5303084A (en) * 1991-08-27 1994-04-12 Kaman Aerospace Corporation Laser light beam homogenizer and imaging lidar system incorporating same
GB9226483D0 (en) * 1992-12-18 1993-02-10 Kodak Ltd A hollow rotary drum processor
JPH06235883A (ja) * 1993-02-10 1994-08-23 Sony Corp 映像プロジェクタ装置
WO1995000865A1 (en) * 1993-06-17 1995-01-05 Xmr, Inc. Improved optical beam integration system
JPH07159722A (ja) * 1993-12-09 1995-06-23 Nikon Corp 投射装置
US5828496A (en) * 1993-12-22 1998-10-27 Canon Kabushiki Kaisha Illumination optical system
WO1995018984A1 (en) * 1994-01-07 1995-07-13 Coherent, Inc. Apparatus for creating a square or rectangular laser beam with a uniform intensity profile
JP3633002B2 (ja) * 1994-05-09 2005-03-30 株式会社ニコン 照明光学装置、露光装置及び露光方法
JPH07306395A (ja) * 1994-05-10 1995-11-21 Nikon Corp 投射装置
KR0150999B1 (ko) * 1994-10-28 1998-12-15 김광호 평행광 조명장치
FR2733604B1 (fr) * 1995-04-28 1997-06-27 Thomson Multimedia Sa Dispositif d'eclairement
US5629801A (en) * 1995-06-07 1997-05-13 Silicon Light Machines Diffraction grating light doubling collection system
US5755503A (en) * 1995-11-13 1998-05-26 Industrial Technology Research Institute Optical illumination system having improved efficiency and uniformity and projection instrument comprising such a system
US5662401A (en) * 1995-12-13 1997-09-02 Philips Electronics North America Corporation Integrating lens array and image forming method for improved optical efficiency
JPH09185008A (ja) * 1995-12-28 1997-07-15 Ushio Inc 光学装置および多面反射鏡
GB2313920A (en) * 1996-06-07 1997-12-10 Sharp Kk Diffractive spatial light modulator and display

Also Published As

Publication number Publication date
EP0901031A2 (de) 1999-03-10
US6155688A (en) 2000-12-05
JPH11143388A (ja) 1999-05-28
EP0901031A3 (de) 2000-02-23
DE69826950T2 (de) 2006-02-23
JP3929003B2 (ja) 2007-06-13
EP0901031B1 (de) 2004-10-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee