WO2008044171A3 - Led based luminaire and lighting device - Google Patents
Led based luminaire and lighting device Download PDFInfo
- 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
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.
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)
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)
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 |
-
2007
- 2007-10-04 WO PCT/IB2007/054036 patent/WO2008044171A2/en active Application Filing
- 2007-10-08 TW TW096137704A patent/TW200833165A/en unknown
Patent Citations (3)
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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