GB2340619A - Liquid crystal projector with non-uniform lenslet arrays - Google Patents

Liquid crystal projector with non-uniform lenslet arrays Download PDF

Info

Publication number
GB2340619A
GB2340619A GB9817328A GB9817328A GB2340619A GB 2340619 A GB2340619 A GB 2340619A GB 9817328 A GB9817328 A GB 9817328A GB 9817328 A GB9817328 A GB 9817328A GB 2340619 A GB2340619 A GB 2340619A
Authority
GB
United Kingdom
Prior art keywords
lenslet
array
liquid crystal
lenslets
crystal projector
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.)
Withdrawn
Application number
GB9817328A
Other languages
English (en)
Other versions
GB9817328D0 (en
Inventor
Michael Geraint Robinson
Duncan James Anderson
Jason Slack
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
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to GB9817328A priority Critical patent/GB2340619A/en
Publication of GB9817328D0 publication Critical patent/GB9817328D0/en
Priority to US09/369,362 priority patent/US6260972B1/en
Priority to JP11224612A priority patent/JP2000066140A/ja
Priority to EP99115664A priority patent/EP0980188A3/en
Publication of GB2340619A publication Critical patent/GB2340619A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G02B27/285—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining comprising arrays of elements, e.g. microprisms
    • 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
    • G02B27/0905—Dividing and/or superposing multiple light beams
    • 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
    • G02B27/0961—Lens arrays
    • 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
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • 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
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/149—Beam splitting or combining systems operating by reflection only using crossed beamsplitting surfaces, e.g. cross-dichroic cubes or X-cubes
    • 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]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)
GB9817328A 1998-08-11 1998-08-11 Liquid crystal projector with non-uniform lenslet arrays Withdrawn GB2340619A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9817328A GB2340619A (en) 1998-08-11 1998-08-11 Liquid crystal projector with non-uniform lenslet arrays
US09/369,362 US6260972B1 (en) 1998-08-11 1999-08-06 Liquid crystal projectors
JP11224612A JP2000066140A (ja) 1998-08-11 1999-08-06 液晶プロジェクタ
EP99115664A EP0980188A3 (en) 1998-08-11 1999-08-09 Liquid crystal projectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9817328A GB2340619A (en) 1998-08-11 1998-08-11 Liquid crystal projector with non-uniform lenslet arrays

Publications (2)

Publication Number Publication Date
GB9817328D0 GB9817328D0 (en) 1998-10-07
GB2340619A true GB2340619A (en) 2000-02-23

Family

ID=10836960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9817328A Withdrawn GB2340619A (en) 1998-08-11 1998-08-11 Liquid crystal projector with non-uniform lenslet arrays

Country Status (4)

Country Link
US (1) US6260972B1 (enExample)
EP (1) EP0980188A3 (enExample)
JP (1) JP2000066140A (enExample)
GB (1) GB2340619A (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100265A1 (de) * 2001-01-08 2002-07-11 Zeiss Carl Beleuchtungssystem mit Rasterelementen unterschiedlicher Größe
JP3635979B2 (ja) * 1999-04-09 2005-04-06 セイコーエプソン株式会社 照明光学系および投写型表示装置
JP3471001B2 (ja) * 1999-04-16 2003-11-25 富士写真光機株式会社 照明光学系およびこれを用いた投射型表示装置
JP4005292B2 (ja) * 2000-02-18 2007-11-07 フジノン株式会社 照明光学系およびこれを用いた投射型表示装置
JP3642267B2 (ja) * 2000-07-05 2005-04-27 セイコーエプソン株式会社 照明光学系およびこれを備えたプロジェクタ
KR100400369B1 (ko) * 2000-12-28 2003-10-08 엘지전자 주식회사 화상 투사장치
KR100451733B1 (ko) 2000-12-28 2004-10-08 엘지전자 주식회사 화상 투사 장치
JP4143444B2 (ja) * 2003-03-07 2008-09-03 キヤノン株式会社 照明光学系
JP4221334B2 (ja) * 2004-06-01 2009-02-12 Ｎｅｃディスプレイソリューションズ株式会社 投写型表示装置
US7198373B2 (en) * 2005-05-03 2007-04-03 Eastman Kodak Company Display apparatus using LCD panel
EP2321693A4 (en) * 2008-08-15 2014-04-09 Wavien Inc RECYCLING SYSTEM AND METHOD FOR IMPROVED BRIGHTNESS BY USING HOLLOW LIGHT GUIDES WITH ONE OR MORE LIGHT SOURCES AND PROJECTOR THEREWITH
JP6743598B2 (ja) * 2016-09-07 2020-08-19 株式会社Ｊｖｃケンウッド 投射型画像表示装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812115A2 (en) * 1996-06-04 1997-12-10 Hitachi, Ltd. Projection type liquid crystal display device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2973750B2 (ja) * 1992-03-31 1999-11-08 松下電器産業株式会社 照明光学装置とそれを用いた投写型表示装置
US5662401A (en) * 1995-12-13 1997-09-02 Philips Electronics North America Corporation Integrating lens array and image forming method for improved optical efficiency
TW358890B (en) * 1996-06-25 1999-05-21 Seiko Epson Corp Polarizing converter, polarizing lighting, display and projection using these elements
JP3473335B2 (ja) * 1996-08-19 2003-12-02 セイコーエプソン株式会社 投写型表示装置
TW372281B (en) * 1996-11-25 1999-10-21 Koninkl Philips Electronics Nv Illumination system and image projection device provided with such an illumination system
JP3635867B2 (ja) * 1997-06-03 2005-04-06 株式会社日立製作所 投射型液晶表示装置
JP3832076B2 (ja) * 1998-02-16 2006-10-11 セイコーエプソン株式会社 偏光照明装置および投写型表示装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812115A2 (en) * 1996-06-04 1997-12-10 Hitachi, Ltd. Projection type liquid crystal display device

Also Published As

Publication number Publication date
GB9817328D0 (en) 1998-10-07
JP2000066140A (ja) 2000-03-03
EP0980188A3 (en) 2002-04-24
US6260972B1 (en) 2001-07-17
EP0980188A2 (en) 2000-02-16

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)