WO2002029454A3 - Lighting device for non-emissive displays - Google Patents

Lighting device for non-emissive displays Download PDF

Info

Publication number
WO2002029454A3
WO2002029454A3 PCT/IB2001/001548 IB0101548W WO0229454A3 WO 2002029454 A3 WO2002029454 A3 WO 2002029454A3 IB 0101548 W IB0101548 W IB 0101548W WO 0229454 A3 WO0229454 A3 WO 0229454A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
guiding panel
display
side edge
light guiding
Prior art date
Application number
PCT/IB2001/001548
Other languages
French (fr)
Other versions
WO2002029454A2 (en
Inventor
Marko Parikka
Original Assignee
Nokia Corp
Nokia Inc
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 Nokia Corp, Nokia Inc filed Critical Nokia Corp
Priority to AU2001282381A priority Critical patent/AU2001282381A1/en
Priority to EP01960997A priority patent/EP1356230A2/en
Priority to KR10-2003-7004775A priority patent/KR100515872B1/en
Priority to JP2002532974A priority patent/JP2004527780A/en
Publication of WO2002029454A2 publication Critical patent/WO2002029454A2/en
Publication of WO2002029454A3 publication Critical patent/WO2002029454A3/en

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
    • 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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide

Abstract

A method and device for improving lighting of a display (100) having a top surface (110) for viewing. The device includes a light guiding panel (20) located substantially on the top surface of the display and at least one linear light source (50) located adjacent to the light guiding panel for providing light thereto, wherein the light guiding panel has a first surface (24) adjacent to the top surface of the display, a second surface (22) opposite to the first surface, and at least one side edge (26) for admitting a portion of the light provided by the linear light source through the side edge into the light guiding panel between the first and second surfaces; and the second surface includes a plurality of elongated grooves (X0, X1, ..., Xn) for reflecting part of the admitted light distributed according to the distance between the grooves and the side edge.
PCT/IB2001/001548 2000-10-03 2001-08-27 Lighting device for non-emissive displays WO2002029454A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2001282381A AU2001282381A1 (en) 2000-10-03 2001-08-27 Lighting device for non-emissive displays
EP01960997A EP1356230A2 (en) 2000-10-03 2001-08-27 Lighting device for non-emissive displays
KR10-2003-7004775A KR100515872B1 (en) 2000-10-03 2001-08-27 Lighting device for non-emissive displays
JP2002532974A JP2004527780A (en) 2000-10-03 2001-08-27 Light source device for non-radiative display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/677,907 US6592233B1 (en) 2000-10-03 2000-10-03 Lighting device for non-emissive displays
US09/677,907 2000-10-03

Publications (2)

Publication Number Publication Date
WO2002029454A2 WO2002029454A2 (en) 2002-04-11
WO2002029454A3 true WO2002029454A3 (en) 2003-08-21

Family

ID=24720575

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/001548 WO2002029454A2 (en) 2000-10-03 2001-08-27 Lighting device for non-emissive displays

Country Status (7)

Country Link
US (1) US6592233B1 (en)
EP (1) EP1356230A2 (en)
JP (1) JP2004527780A (en)
KR (1) KR100515872B1 (en)
CN (1) CN100408914C (en)
AU (1) AU2001282381A1 (en)
WO (1) WO2002029454A2 (en)

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CN104006322B (en) * 2013-02-26 2018-03-30 威斯通全球技术公司 Barcode illuminating device

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US7128459B2 (en) * 2001-11-12 2006-10-31 Nidec Copal Corporation Light-guide plate and method for manufacturing the same
JP2004192828A (en) * 2002-12-06 2004-07-08 Alps Electric Co Ltd Backlight device and liquid crystal display
JP2005135899A (en) * 2003-10-06 2005-05-26 Omron Corp Surface light source apparatus and display apparatus
TWM246813U (en) * 2003-11-07 2004-10-11 Lite On Technology Corp LED display having light guide plate
CN101501391B (en) 2006-07-03 2011-10-12 诺基亚公司 Changing graphics in an apparatus including user interface illumination
US7650056B2 (en) * 2006-11-17 2010-01-19 Ichia Technologies, Inc. Method for manufacturing a light-guiding plate and key module having the light-guiding plate
US7455416B2 (en) * 2006-11-17 2008-11-25 Ichia Technologies, Inc. Light guide structure and keypad having the same
US7423229B2 (en) * 2006-11-17 2008-09-09 Ichia Technologies, Inc. Light guiding plate and a keystroke module for use therewith
US20080117635A1 (en) * 2006-11-17 2008-05-22 Ko-Ju Chen Multi-Layer Light Guiding Structure And Method For Using The Same
JP2010522961A (en) * 2007-03-29 2010-07-08 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ General lighting system and lighting fixture
JP5535923B2 (en) * 2007-10-09 2014-07-02 ニコール，アンソニー，ジェイ Optical coupling to illuminated film
US8434909B2 (en) 2007-10-09 2013-05-07 Flex Lighting Ii, Llc Light emitting display with light mixing within a film
JP4392445B2 (en) * 2007-12-14 2010-01-06 株式会社エス・ケー・ジー Light guide plate manufacturing method, light guide plate, and light-emitting signboard using the light guide plate
US20120127751A1 (en) * 2008-11-10 2012-05-24 Nokia Corporation Diffractive backlight structure
US20100177076A1 (en) * 2009-01-13 2010-07-15 Metrologic Instruments, Inc. Edge-lit electronic-ink display device for use in indoor and outdoor environments
US8457013B2 (en) 2009-01-13 2013-06-04 Metrologic Instruments, Inc. Wireless dual-function network device dynamically switching and reconfiguring from a wireless network router state of operation into a wireless network coordinator state of operation in a wireless communication network
JP2012516025A (en) 2009-01-26 2012-07-12 フレックス ライティング ツー リミテッド ライアビリティ カンパニー Lighting with flexible thin film
US8905610B2 (en) 2009-01-26 2014-12-09 Flex Lighting Ii, Llc Light emitting device comprising a lightguide film
US8917962B1 (en) 2009-06-24 2014-12-23 Flex Lighting Ii, Llc Method of manufacturing a light input coupler and lightguide
US9110200B2 (en) 2010-04-16 2015-08-18 Flex Lighting Ii, Llc Illumination device comprising a film-based lightguide
US9028123B2 (en) * 2010-04-16 2015-05-12 Flex Lighting Ii, Llc Display illumination device with a film-based lightguide having stacked incident surfaces
WO2012016047A1 (en) 2010-07-28 2012-02-02 Flex Lighting Ii, Llc Light emitting device with optical redundancy
US9128220B2 (en) * 2010-11-29 2015-09-08 Sharp Kabushiki Kaisha Light guide body with continuously variable refractive index, and devices using such body
WO2012116129A1 (en) * 2011-02-25 2012-08-30 3M Innovative Properties Company Front-lit reflective display device
CA2829388C (en) 2011-03-09 2018-09-25 Flex Lighting Ii, Llc Light emitting device with adjustable light output profile
US20130215639A1 (en) * 2012-02-08 2013-08-22 Entire Technology Co., Ltd. Light Guide Device, Front-Light Module And Reflective Display Apparatus
US9690032B1 (en) 2013-03-12 2017-06-27 Flex Lighting Ii Llc Lightguide including a film with one or more bends
US11009646B2 (en) 2013-03-12 2021-05-18 Azumo, Inc. Film-based lightguide with interior light directing edges in a light mixing region
US9566751B1 (en) 2013-03-12 2017-02-14 Flex Lighting Ii, Llc Methods of forming film-based lightguides
CN111051771B (en) * 2017-08-08 2021-10-15 3M创新有限公司 Light guide with grooves of varying depth
WO2020115735A1 (en) * 2018-12-05 2020-06-11 Elbit Systems Ltd Display illumination optics
WO2020142731A1 (en) 2019-01-03 2020-07-09 Flex Lighting Ii, Llc Reflective display comprising a lightguide and light turning film creating multiple illumination peaks
US11513274B2 (en) 2019-08-01 2022-11-29 Azumo, Inc. Lightguide with a light input edge between lateral edges of a folded strip

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JP2000011723A (en) * 1998-06-29 2000-01-14 Minebea Co Ltd Sheet-like lighting system

Non-Patent Citations (2)

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Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31) *
See also references of EP1356230A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006322B (en) * 2013-02-26 2018-03-30 威斯通全球技术公司 Barcode illuminating device

Also Published As

Publication number Publication date
JP2004527780A (en) 2004-09-09
KR100515872B1 (en) 2005-09-20
CN100408914C (en) 2008-08-06
AU2001282381A1 (en) 2002-04-15
WO2002029454A2 (en) 2002-04-11
KR20030086574A (en) 2003-11-10
EP1356230A2 (en) 2003-10-29
US6592233B1 (en) 2003-07-15
CN1524171A (en) 2004-08-25

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