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AU2001282909A1 - Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent - Google Patents

Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent

Info

Publication number
AU2001282909A1
AU2001282909A1 AU2001282909A AU8290901A AU2001282909A1 AU 2001282909 A1 AU2001282909 A1 AU 2001282909A1 AU 2001282909 A AU2001282909 A AU 2001282909A AU 8290901 A AU8290901 A AU 8290901A AU 2001282909 A1 AU2001282909 A1 AU 2001282909A1
Authority
AU
Australia
Prior art keywords
reflector
light emitting
emitting diodes
elements including
lighting elements
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
AU2001282909A
Inventor
Kenneth J. Myers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU2001282909A1 publication Critical patent/AU2001282909A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/002Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/005Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00Combination of light sources
    • F21Y2113/10Combination of light sources of different colours
    • F21Y2113/13Combination of light sources of different colours comprising an assembly of point-like light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
AU2001282909A 2000-08-17 2001-08-15 Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent Abandoned AU2001282909A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09640024 2000-08-17
US09/640,024 US6330111B1 (en) 2000-06-13 2000-08-17 Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent
PCT/US2001/022596 WO2002014795A1 (en) 2000-08-17 2001-08-15 Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent

Publications (1)

Publication Number Publication Date
AU2001282909A1 true AU2001282909A1 (en) 2002-02-25

Family

ID=24566515

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001282909A Abandoned AU2001282909A1 (en) 2000-08-17 2001-08-15 Lighting elements including light emitting diodes, microprism sheet, reflector, and diffusing agent

Country Status (3)

Country Link
US (1) US6330111B1 (en)
AU (1) AU2001282909A1 (en)
WO (1) WO2002014795A1 (en)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040052076A1 (en) 1997-08-26 2004-03-18 Mueller George G. Controlled lighting methods and apparatus
US6777891B2 (en) 1997-08-26 2004-08-17 Color Kinetics, Incorporated Methods and apparatus for controlling devices in a networked lighting system
US7038398B1 (en) 1997-08-26 2006-05-02 Color Kinetics, Incorporated Kinetic illumination system and methods
US7064498B2 (en) 1997-08-26 2006-06-20 Color Kinetics Incorporated Light-emitting diode based products
US6967448B2 (en) 1997-08-26 2005-11-22 Color Kinetics, Incorporated Methods and apparatus for controlling illumination
US20030133292A1 (en) 1999-11-18 2003-07-17 Mueller George G. Methods and apparatus for generating and modulating white light illumination conditions
US6806659B1 (en) 1997-08-26 2004-10-19 Color Kinetics, Incorporated Multicolored LED lighting method and apparatus
US7186003B2 (en) 1997-08-26 2007-03-06 Color Kinetics Incorporated Light-emitting diode based products
US6720745B2 (en) 1997-08-26 2004-04-13 Color Kinetics, Incorporated Data delivery track
US7014336B1 (en) 1999-11-18 2006-03-21 Color Kinetics Incorporated Systems and methods for generating and modulating illumination conditions
US7352339B2 (en) 1997-08-26 2008-04-01 Philips Solid-State Lighting Solutions Diffuse illumination systems and methods
US6965205B2 (en) 1997-08-26 2005-11-15 Color Kinetics Incorporated Light emitting diode based products
US7132804B2 (en) * 1997-12-17 2006-11-07 Color Kinetics Incorporated Data delivery track
US7598686B2 (en) 1997-12-17 2009-10-06 Philips Solid-State Lighting Solutions, Inc. Organic light emitting diode methods and apparatus
JP3585097B2 (en) * 1998-06-04 2004-11-04 セイコーエプソン株式会社 Light source device, optical device and liquid crystal display device
AU7730800A (en) 1999-09-29 2001-04-30 Color Kinetics Incorporated Systems and methods for calibrating light output by light-emitting diodes
US7202613B2 (en) 2001-05-30 2007-04-10 Color Kinetics Incorporated Controlled lighting methods and apparatus
US7303300B2 (en) 2000-09-27 2007-12-04 Color Kinetics Incorporated Methods and systems for illuminating household products
US6809470B2 (en) * 2000-12-29 2004-10-26 Intel Corporation Flat panel color display with enhanced brightness and preferential viewing angles
US7598684B2 (en) 2001-05-30 2009-10-06 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for controlling devices in a networked lighting system
US20030015708A1 (en) * 2001-07-23 2003-01-23 Primit Parikh Gallium nitride based diodes with low forward voltage and low reverse current operation
JP2003035884A (en) * 2001-07-24 2003-02-07 Hitachi Ltd Image display device
US7358929B2 (en) * 2001-09-17 2008-04-15 Philips Solid-State Lighting Solutions, Inc. Tile lighting methods and systems
US6837588B2 (en) * 2001-12-25 2005-01-04 Minebea Co., Ltd. Spread illuminating apparatus with means for reflecting light dispersely
US6864864B2 (en) * 2002-01-07 2005-03-08 Harvatek Corp. Virtual stereoscopic light emitting diode display panel
JP4456870B2 (en) * 2002-01-10 2010-04-28 パテント−トロイハント−ゲゼルシヤフト フユール エレクトリツシエ グリユーラムペン ミツト ベシユレンクテル ハフツング lamp
US6683423B2 (en) * 2002-04-08 2004-01-27 David W. Cunningham Lighting apparatus for producing a beam of light having a controlled luminous flux spectrum
US20040069995A1 (en) * 2002-05-08 2004-04-15 Zeolux Corporation Feedback enhanced light emitting device
US7023543B2 (en) 2002-08-01 2006-04-04 Cunningham David W Method for controlling the luminous flux spectrum of a lighting fixture
GB0220005D0 (en) * 2002-08-29 2002-10-09 Oliver David N Display devices
US7300192B2 (en) 2002-10-03 2007-11-27 Color Kinetics Incorporated Methods and apparatus for illuminating environments
TW573181B (en) * 2002-12-10 2004-01-21 Benq Corp Direct backlight module
US6764193B1 (en) * 2003-02-04 2004-07-20 Meng Pi Wei Full-color shoe light device
KR100852579B1 (en) * 2003-03-31 2008-08-14 샤프 가부시키가이샤 Surface illumination device and liquid display device using the same
TW588197B (en) * 2003-04-22 2004-05-21 Au Optronics Corp Light source of backlight
US7178941B2 (en) 2003-05-05 2007-02-20 Color Kinetics Incorporated Lighting methods and systems
TWI220076B (en) * 2003-08-27 2004-08-01 Au Optronics Corp Light-emitting device
US7463315B2 (en) * 2004-03-11 2008-12-09 Tpo Displays Corp. Light coupling structure on light guide plate in a backlight module
US7354172B2 (en) 2004-03-15 2008-04-08 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for controlled lighting based on a reference gamut
US7534633B2 (en) 2004-07-02 2009-05-19 Cree, Inc. LED with substrate modifications for enhanced light extraction and method of making same
KR101095637B1 (en) * 2004-09-23 2011-12-19 삼성전자주식회사 Light generating device, backlight assembly having same, and display device having backlight assembly
US8001455B2 (en) * 2004-10-14 2011-08-16 Daktronics, Inc. Translation table
US8344410B2 (en) 2004-10-14 2013-01-01 Daktronics, Inc. Flexible pixel element and signal distribution means
US7893948B1 (en) 2004-10-14 2011-02-22 Daktronics, Inc. Flexible pixel hardware and method
US7868903B2 (en) 2004-10-14 2011-01-11 Daktronics, Inc. Flexible pixel element fabrication and sealing method
US9070850B2 (en) 2007-10-31 2015-06-30 Cree, Inc. Light emitting diode package and method for fabricating same
DE202005001786U1 (en) * 2005-02-03 2006-03-16 Lite-Licht Gmbh Luminaire for indoor or outdoor use
US7543956B2 (en) 2005-02-28 2009-06-09 Philips Solid-State Lighting Solutions, Inc. Configurations and methods for embedding electronics or light emitters in manufactured materials
DE102005013804A1 (en) * 2005-03-24 2006-09-28 BSH Bosch und Siemens Hausgeräte GmbH Illuminated display window for LED and / or LC displays
US20060285311A1 (en) * 2005-06-19 2006-12-21 Chih-Li Chang Light-emitting device, backlight module, and liquid crystal display using the same
JP4540061B2 (en) * 2005-07-20 2010-09-08 株式会社エンプラス Lighting device, surface light source device, and lighting unit
US7815355B2 (en) 2005-08-27 2010-10-19 3M Innovative Properties Company Direct-lit backlight having light recycling cavity with concave transflector
US7537374B2 (en) 2005-08-27 2009-05-26 3M Innovative Properties Company Edge-lit backlight having light recycling cavity with concave transflector
CN101297234B (en) 2005-08-27 2010-08-11 3M创新有限公司 Illumination assembly and system
US20070252161A1 (en) * 2006-03-31 2007-11-01 3M Innovative Properties Company Led mounting structures
US7804147B2 (en) 2006-07-31 2010-09-28 Cree, Inc. Light emitting diode package element with internal meniscus for bubble free lens placement
US7481563B2 (en) * 2006-09-21 2009-01-27 3M Innovative Properties Company LED backlight
US7769066B2 (en) * 2006-11-15 2010-08-03 Cree, Inc. Laser diode and method for fabricating same
US7813400B2 (en) * 2006-11-15 2010-10-12 Cree, Inc. Group-III nitride based laser diode and method for fabricating same
EP2095011A1 (en) * 2006-12-04 2009-09-02 Cree Led Lighting Solutions, Inc. Lighting assembly and lighting method
US7834367B2 (en) * 2007-01-19 2010-11-16 Cree, Inc. Low voltage diode with reduced parasitic resistance and method for fabricating
US7999283B2 (en) * 2007-06-14 2011-08-16 Cree, Inc. Encapsulant with scatterer to tailor spatial emission pattern and color uniformity in light emitting diodes
US8519437B2 (en) * 2007-09-14 2013-08-27 Cree, Inc. Polarization doping in nitride based diodes
US9012937B2 (en) * 2007-10-10 2015-04-21 Cree, Inc. Multiple conversion material light emitting diode package and method of fabricating same
US10256385B2 (en) 2007-10-31 2019-04-09 Cree, Inc. Light emitting die (LED) packages and related methods
US8866169B2 (en) * 2007-10-31 2014-10-21 Cree, Inc. LED package with increased feature sizes
JP5194759B2 (en) * 2007-12-11 2013-05-08 日亜化学工業株式会社 Display device
US8177382B2 (en) * 2008-03-11 2012-05-15 Cree, Inc. Apparatus and methods for multiplanar optical diffusers and display panels for using the same
US20110051416A1 (en) * 2008-04-23 2011-03-03 Koninklijke Philips Electronics N.V. Lighting system
US9287469B2 (en) * 2008-05-02 2016-03-15 Cree, Inc. Encapsulation for phosphor-converted white light emitting diode
GB0810226D0 (en) 2008-06-04 2008-07-09 Weatherley Richard Blended colour LED lamp
EP2380049A1 (en) * 2008-12-18 2011-10-26 Koninklijke Philips Electronics N.V. Light emitting device creating decorative light effects in a luminaire
US20100231700A1 (en) * 2009-03-10 2010-09-16 Lsi Industries, Inc. 3d screen with modular polarized pixels
US8096671B1 (en) 2009-04-06 2012-01-17 Nmera, Llc Light emitting diode illumination system
US8415692B2 (en) 2009-07-06 2013-04-09 Cree, Inc. LED packages with scattering particle regions
RU2537442C2 (en) * 2009-09-24 2015-01-10 Конинклейке Филипс Электроникс Н.В. System of floor covering including lighting system
WO2011060511A1 (en) * 2009-11-19 2011-05-26 Xl Holding, Besloten Vennootschap Met Beperkte Aansprakelijkheid Viewing screen
US8604461B2 (en) 2009-12-16 2013-12-10 Cree, Inc. Semiconductor device structures with modulated doping and related methods
US8536615B1 (en) 2009-12-16 2013-09-17 Cree, Inc. Semiconductor device structures with modulated and delta doping and related methods
US9146017B2 (en) * 2010-04-23 2015-09-29 Koninklijke Philips N.V. Lighting device
CN101956918A (en) * 2010-09-21 2011-01-26 深圳安嵘光电产品有限公司 LE D light guide plate bulb and manufacturing method thereof
CN101955723A (en) * 2010-09-30 2011-01-26 宁波激智新材料科技有限公司 Composition applied to atomization film, atomization film and LED lighting equipment
WO2014051620A1 (en) 2012-09-28 2014-04-03 Empire Technology Development Llc Lighting device and methods of making the same
US9741273B1 (en) 2016-08-10 2017-08-22 Jeffrey A. Curtis Illuminated assemblies and methods of manufacture thereof
US11688364B2 (en) * 2021-05-19 2023-06-27 Apple Inc. Systems and methods for tile boundary compensation

Family Cites Families (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881686A (en) 1953-10-10 1959-04-14 Zeiss Ikon A G Stuttgart Focusing plate for photographic cameras
US2909770A (en) 1953-11-25 1959-10-20 Gen Electric Transmission screen
US3279340A (en) 1964-03-19 1966-10-18 Rca Corp Art of making color-phosphor mosaic screens
US3718078A (en) 1970-12-31 1973-02-27 Polaroid Corp Smoothly granulated optical surface and method for making same
US3971051A (en) 1973-06-29 1976-07-20 Polaroid Corporation Focusing screen
US3902787A (en) 1974-04-17 1975-09-02 Action Films Rear projection viewing screen
US4165920A (en) 1977-07-27 1979-08-28 Qantix Corporation Echo reduction improvement in a front face glare reduction overlay
JPS5455114A (en) 1977-10-11 1979-05-02 Ricoh Co Ltd Method and device for obtaining stereophonic television picture
US4309074A (en) 1977-11-28 1982-01-05 Granieri Jr Michael S Novel viewing screen
JPS5616135U (en) 1979-01-17 1981-02-12
US4206969A (en) 1979-04-11 1980-06-10 Minnesota Mining And Manufacturing Company Directional front projection screen
US4333707A (en) 1979-04-23 1982-06-08 West Laurice J Method of image enhancement
US4675575A (en) * 1984-07-13 1987-06-23 E & G Enterprises Light-emitting diode assemblies and systems therefore
US4805984A (en) * 1985-11-21 1989-02-21 Minnesota Mining And Manufacturing Company Totally internally reflecting light conduit
US4756603A (en) 1986-01-31 1988-07-12 Nippon Seiki Co., Ltd. Glare-proof transparent cover plate
US4708435A (en) 1986-10-30 1987-11-24 Mitsubishi Rayon Co., Ltd. Rear projection screen
US4834495A (en) * 1987-05-08 1989-05-30 Minnesota Mining And Manufacturing Company Collapsible light pipe
NL8801361A (en) 1988-05-27 1989-12-18 Koninkl Philips Electronics Nv VIEW PROJECTION SCREEN.
US5208620A (en) 1988-10-04 1993-05-04 Canon Kabushiki Kaisha Display apparatus
US5317405A (en) 1991-03-08 1994-05-31 Nippon Telegraph And Telephone Corporation Display and image capture apparatus which enables eye contact
JPH05100223A (en) * 1991-04-03 1993-04-23 Riyoosan:Kk Light source device
US5143433A (en) * 1991-11-01 1992-09-01 Litton Systems Canada Limited Night vision backlighting system for liquid crystal displays
JP3280050B2 (en) 1991-11-05 2002-04-30 若竹 雅之 Pseudo luminous body, substrate for simulated luminous body used therefor, and display element and display device using the quasi luminous body
US5749646A (en) * 1992-01-17 1998-05-12 Brittell; Gerald A. Special effect lamps
US5278545A (en) * 1992-06-11 1994-01-11 Showa Hatsumei Kaisha, Ltd. Backlit LCD display panels including sensible panels for pen-driven computers
US5359691A (en) 1992-10-08 1994-10-25 Briteview Technologies Backlighting system with a multi-reflection light injection system and using microprisms
US5296882A (en) 1992-12-21 1994-03-22 Minnesota Mining And Manufacturing Company Overhead projector with catadioptric fresnel lens
US5316359A (en) 1993-03-08 1994-05-31 Chrysler Corporation Anti-reflective automotive interior instrument panel surface
US5475785A (en) * 1993-04-30 1995-12-12 Johanson; Walter A. Illumination devices and methods of forming same
EP0704071A4 (en) 1993-05-04 1996-10-09 Xenotech Res Pty Ltd Stereoscopic display unit
AU689873B2 (en) 1994-05-31 1998-04-09 Sanyo Electric Co., Ltd. Solar lighting apparatus and controller for controlling the solar lighting apparatus
US5512219A (en) 1994-06-03 1996-04-30 Reflexite Corporation Method of casting a microstructure sheet having an array of prism elements using a reusable polycarbonate mold
US5506929A (en) 1994-10-19 1996-04-09 Clio Technologies, Inc. Light expanding system for producing a linear or planar light beam from a point-like light source
US5619373A (en) 1995-06-07 1997-04-08 Hasbro, Inc. Optical system for a head mounted display
GB9524220D0 (en) 1995-11-27 1996-01-31 Nashua Corp Improvements in or relating to projection screens and the like
JPH09167508A (en) * 1995-12-15 1997-06-24 Patoraito:Kk Signal informative display light
US5973831A (en) 1996-01-22 1999-10-26 Kleinberger; Paul Systems for three-dimensional viewing using light polarizing layers
US5836096A (en) 1996-03-04 1998-11-17 Brauer; William R. Apparatus for illuminating medical diagnostic imaging film with enhanced viewability
US5742411A (en) 1996-04-23 1998-04-21 Advanced Deposition Technologies, Inc. Security hologram with covert messaging
US5926601A (en) 1996-05-02 1999-07-20 Briteview Technologies, Inc. Stacked backlighting system using microprisms
GB2317524A (en) 1996-09-19 1998-03-25 Sharp Kk Three dimensional stereoscopic projection display
US5956180A (en) 1996-12-31 1999-09-21 Bass; Robert Optical viewing system for asynchronous overlaid images

Also Published As

Publication number Publication date
WO2002014795A1 (en) 2002-02-21
US6330111B1 (en) 2001-12-11

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