IN2015DN02679A - - Google Patents

Info

Publication number
IN2015DN02679A
IN2015DN02679A IN2679DEN2015A IN2015DN02679A IN 2015DN02679 A IN2015DN02679 A IN 2015DN02679A IN 2679DEN2015 A IN2679DEN2015 A IN 2679DEN2015A IN 2015DN02679 A IN2015DN02679 A IN 2015DN02679A
Authority
IN
India
Prior art keywords
guiding plate
light
scattering dots
light beams
optical
Prior art date
Application number
Inventor
Leslie Charles; Laycock
Andrew Graham; Mccarthy
Original Assignee
Bae Systems Plc
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 Bae Systems Plc filed Critical Bae Systems Plc
Publication of IN2015DN02679A publication Critical patent/IN2015DN02679A/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
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • 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
    • G02B6/003—Lens or lenticular sheet or layer
    • 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
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The following invention relates to an improved LCD Backlight , particularly to an improved arrangement of the optical scattering dots within the light guiding plate. The light guiding plate (22) comprises a lower surface which is formed with a plurality of optical scattering dots (23a- 23d) , which scatter and reflect the light beams to convert the light beams into a uniform surface light source , characterised wherein the surface area of each optical dot decreases as a function of its distance from at least one of the three edges comprising the LED lights (26).
IN2679DEN2015 2012-10-04 2013-10-02 IN2015DN02679A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1217735.8A GB2506625A (en) 2012-10-04 2012-10-04 LCD backlight display
PCT/GB2013/052567 WO2014053832A1 (en) 2012-10-04 2013-10-02 Improved lcd backlight display

Publications (1)

Publication Number Publication Date
IN2015DN02679A true IN2015DN02679A (en) 2015-09-04

Family

ID=47225649

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2679DEN2015 IN2015DN02679A (en) 2012-10-04 2013-10-02

Country Status (7)

Country Link
US (1) US9720161B2 (en)
EP (1) EP2904310A1 (en)
JP (1) JP2015536029A (en)
AU (1) AU2013326308B2 (en)
GB (1) GB2506625A (en)
IN (1) IN2015DN02679A (en)
WO (1) WO2014053832A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10058989B2 (en) * 2011-03-31 2018-08-28 Ingersoll-Rand Company Display assemblies having integrated display covers and light pipes and handheld power tools and methods including same
GB2506625A (en) 2012-10-04 2014-04-09 Bae Systems Plc LCD backlight display
EP3143326A1 (en) 2014-05-16 2017-03-22 Corning Incorporated Edge lighted backlight unit for liquid crystal display device
US20150362653A1 (en) * 2014-06-17 2015-12-17 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module
KR102397362B1 (en) * 2015-05-28 2022-05-20 엘지이노텍 주식회사 Light unit and Lamp unit for automobile of using the same
CN108519639A (en) * 2018-04-18 2018-09-11 京东方科技集团股份有限公司 Guide-lighting membrane material, down straight aphototropism mode set and display device

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313179B (en) 1988-12-14 1998-02-18 Vickers Shipbuilding & Eng Improvements in or relating to field howitzers
US5200595A (en) * 1991-04-12 1993-04-06 Universite De Sherbrooke High performance induction plasma torch with a water-cooled ceramic confinement tube
JP3538746B2 (en) * 1997-03-07 2004-06-14 株式会社エンプラス Sidelight type surface light source device
US6386721B1 (en) * 1999-07-08 2002-05-14 Physical Optics Corporation Light pipe having one or more integral diffusers
JP2001312916A (en) 2000-02-24 2001-11-09 Sony Corp Surface light source device
US7703970B2 (en) * 2001-03-27 2010-04-27 Sotek Australia Pty Ltd Illuminated background display apparatus
WO2003056636A1 (en) * 2001-12-29 2003-07-10 Hangzhou Fuyang Xinying Dianzi Ltd. A led and led lamp
JP2008159274A (en) 2006-12-20 2008-07-10 Seiko Epson Corp Light guide plate, light guide plate molding die, method of manufacturing light guide plate molding die, and method of manufacturing light guide plate
US20070189039A1 (en) 2006-02-10 2007-08-16 Seiko Epson Corporation Light guide plate, mold for forming light guide plate, and method for manufacturing a mold for forming light guide plate
JP2008145668A (en) * 2006-12-08 2008-06-26 Hitachi Displays Ltd Liquid crystal display
JP5529427B2 (en) * 2009-03-18 2014-06-25 株式会社ジャパンディスプレイ Electro-optical device and electronic apparatus
JP5332849B2 (en) * 2009-04-14 2013-11-06 住友ベークライト株式会社 Surface light emitting device and holding frame
JP5467388B2 (en) * 2010-04-06 2014-04-09 ソニー株式会社 Illumination device and display device
JP2011238432A (en) * 2010-05-10 2011-11-24 Fujifilm Corp Surface lighting device
CN102252175A (en) * 2010-05-18 2011-11-23 扬升照明股份有限公司 Light source module
CN201739909U (en) 2010-06-24 2011-02-09 深圳富泰宏精密工业有限公司 Backlight module
KR101243827B1 (en) * 2010-07-16 2013-03-18 엘지디스플레이 주식회사 Light guide plate and back light unit including the same
US8702293B2 (en) * 2010-11-05 2014-04-22 Shenzhen China Star Optoelectronics Technology Co., Ltd. Light guide plate and backlight module
US8690412B2 (en) * 2012-03-15 2014-04-08 Apple Inc. Backlight structures and backlight assemblies for electronic device displays
GB2506625A (en) 2012-10-04 2014-04-09 Bae Systems Plc LCD backlight display

Also Published As

Publication number Publication date
AU2013326308B2 (en) 2017-07-20
JP2015536029A (en) 2015-12-17
AU2013326308A1 (en) 2015-04-23
US20150253491A1 (en) 2015-09-10
GB2506625A (en) 2014-04-09
GB201217735D0 (en) 2012-11-14
WO2014053832A1 (en) 2014-04-10
US9720161B2 (en) 2017-08-01
EP2904310A1 (en) 2015-08-12

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