WO2008044171A3 - Led based luminaire and lighting device - Google Patents

Led based luminaire and lighting device Download PDF

Info

Publication number
WO2008044171A3
WO2008044171A3 PCT/IB2007/054036 IB2007054036W WO2008044171A3 WO 2008044171 A3 WO2008044171 A3 WO 2008044171A3 IB 2007054036 W IB2007054036 W IB 2007054036W WO 2008044171 A3 WO2008044171 A3 WO 2008044171A3
Authority
WO
WIPO (PCT)
Prior art keywords
lighting device
luminaire
light
emitting diode
light emitting
Prior art date
Application number
PCT/IB2007/054036
Other languages
French (fr)
Other versions
WO2008044171A2 (en
Inventor
Woudenberg Roel Van
Jean P Jacobs
Christoph G A Hoelen
Johannes P M Ansems
Lars R C Waumans
Original Assignee
Koninkl Philips Electronics Nv
Woudenberg Roel Van
Jean P Jacobs
Christoph G A Hoelen
Johannes P M Ansems
Lars R C Waumans
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 Koninkl Philips Electronics Nv, Woudenberg Roel Van, Jean P Jacobs, Christoph G A Hoelen, Johannes P M Ansems, Lars R C Waumans filed Critical Koninkl Philips Electronics Nv
Publication of WO2008044171A2 publication Critical patent/WO2008044171A2/en
Publication of WO2008044171A3 publication Critical patent/WO2008044171A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/003—Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/52—Details of telephonic subscriber devices including functional features of a camera

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Led Devices (AREA)
  • Planar Illumination Modules (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Proposed is a lighting device (1), comprising a phosphor coated light emitting diode (2). Also proposed is a luminaire (400), comprising a light emitting diode (420) and a transparent window (430) coated with a phosphor layer (440) for emitting light from the luminaire. The lighting device and luminaire furthermore comprise means (3) for providing a residual current to the (phosphor coated) light emitting diode (2,420) in the functional off-state of the lighting device. This is especially advantageous when there is a need to realize a neutral white appearance of its lighting device and/or luminaire in the functional off-state, such as e.g. in the case of an auxiliary light in a mobile phone or a down- light unit.
PCT/IB2007/054036 2006-10-11 2007-10-04 Led based luminaire and lighting device WO2008044171A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP06122131 2006-10-11
EP06122131.3 2006-10-11
EP06126989.0 2006-12-22
EP06126989 2006-12-22

Publications (2)

Publication Number Publication Date
WO2008044171A2 WO2008044171A2 (en) 2008-04-17
WO2008044171A3 true WO2008044171A3 (en) 2008-07-10

Family

ID=39106224

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054036 WO2008044171A2 (en) 2006-10-11 2007-10-04 Led based luminaire and lighting device

Country Status (2)

Country Link
TW (1) TW200833165A (en)
WO (1) WO2008044171A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2409340B1 (en) * 2009-03-19 2019-06-12 Signify Holding B.V. Color adjusting arrangements and illumination device with the same
KR20120081153A (en) * 2009-09-17 2012-07-18 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Lighting device with off-state white appearance
WO2011095948A1 (en) 2010-02-08 2011-08-11 Koninklijke Philips Electronics N.V. Color adjusting arrangement
TWI471061B (en) 2011-10-17 2015-01-21 Lextar Electronics Corp Lamps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030189211A1 (en) * 2002-04-03 2003-10-09 Mitsubishi Electric Research Laboratories, Inc. Automatic backlight for handheld devices
WO2006095609A1 (en) * 2005-03-10 2006-09-14 Citizen Electronics Co., Ltd. Lighting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030189211A1 (en) * 2002-04-03 2003-10-09 Mitsubishi Electric Research Laboratories, Inc. Automatic backlight for handheld devices
WO2006095609A1 (en) * 2005-03-10 2006-09-14 Citizen Electronics Co., Ltd. Lighting device
DE112006000573T5 (en) * 2005-03-10 2008-01-17 Citizen Electronics Co., Ltd., Fujiyoshida lighting device

Also Published As

Publication number Publication date
WO2008044171A2 (en) 2008-04-17
TW200833165A (en) 2008-08-01

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