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AU2001294005A1 - Beam expansion - Google Patents

Beam expansion

Info

Publication number
AU2001294005A1
AU2001294005A1 AU2001294005A AU9400501A AU2001294005A1 AU 2001294005 A1 AU2001294005 A1 AU 2001294005A1 AU 2001294005 A AU2001294005 A AU 2001294005A AU 9400501 A AU9400501 A AU 9400501A AU 2001294005 A1 AU2001294005 A1 AU 2001294005A1
Authority
AU
Australia
Prior art keywords
beam expansion
expansion
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.)
Abandoned
Application number
AU2001294005A
Inventor
Niall Anthony Gallen
Adrian Robert Leigh Travis
Timothy York
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.)
Screen Technology Ltd
Original Assignee
Screen Technology 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 Screen Technology Ltd filed Critical Screen Technology Ltd
Publication of AU2001294005A1 publication Critical patent/AU2001294005A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Polarising Elements (AREA)
AU2001294005A 2000-10-11 2001-10-11 Beam expansion Abandoned AU2001294005A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0024945.8 2000-10-11
GB0024945A GB0024945D0 (en) 2000-10-11 2000-10-11 Beam expansion
PCT/GB2001/004528 WO2002031405A2 (en) 2000-10-11 2001-10-11 Beam expansion

Publications (1)

Publication Number Publication Date
AU2001294005A1 true AU2001294005A1 (en) 2002-04-22

Family

ID=9901101

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001294005A Abandoned AU2001294005A1 (en) 2000-10-11 2001-10-11 Beam expansion

Country Status (5)

Country Link
EP (1) EP1327102A2 (en)
AU (1) AU2001294005A1 (en)
GB (1) GB0024945D0 (en)
TW (1) TW571126B (en)
WO (1) WO2002031405A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7206107B2 (en) * 2004-12-13 2007-04-17 Nokia Corporation Method and system for beam expansion in a display device
US9395690B2 (en) 2010-07-06 2016-07-19 Seereal Technologies S.A. Beam divergence and various collimators for holographic or stereoscopic displays
US9857523B2 (en) 2014-11-24 2018-01-02 Electronics And Telecommunications Research Institute Apparatus for controlling light beam path
KR102739947B1 (en) * 2016-12-21 2024-12-06 삼성전자주식회사 Backlight unit and three-dimensional image display apparatus including the same
CN108153054A (en) * 2018-01-03 2018-06-12 京东方科技集团股份有限公司 Backlight module and display device
US11619825B2 (en) 2019-04-10 2023-04-04 Electronics And Telecommunications Research Institute Method and apparatus for displaying binocular hologram image

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874228A (en) * 1987-03-24 1989-10-17 Minnesota Mining And Manufacturing Company Back-lit display
US5054885A (en) * 1988-10-11 1991-10-08 Minnesota Mining And Manfuacturing Company Light fixture including a partially collimated beam of light and reflective prisms having peaks lying on a curved surface
GB9406742D0 (en) * 1994-04-06 1994-05-25 Crossland William A Thin panel display screen
JPH10260405A (en) * 1997-03-18 1998-09-29 Seiko Epson Corp Lighting device, liquid crystal display device and electronic equipment
JP3743990B2 (en) * 1997-04-10 2006-02-08 オムロン株式会社 Surface light source device
JP3379043B2 (en) * 1998-06-29 2003-02-17 ミネベア株式会社 Planar lighting device
US6222971B1 (en) * 1998-07-17 2001-04-24 David Slobodin Small inlet optical panel and a method of making a small inlet optical panel
KR100419373B1 (en) * 1998-11-27 2004-02-21 샤프 가부시키가이샤 Illuminator, illuminating device, front light, and liquid crystal display

Also Published As

Publication number Publication date
TW571126B (en) 2004-01-11
WO2002031405A2 (en) 2002-04-18
GB0024945D0 (en) 2000-11-29
WO2002031405A3 (en) 2003-01-16
EP1327102A2 (en) 2003-07-16

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