EP 2523534 A2 20121114 - Apparatus and methods for tuning of emitter with multiple LEDs to a single color bin
Title (en)
Apparatus and methods for tuning of emitter with multiple LEDs to a single color bin
Title (de)
Vorrichtung und Verfahren zur Abstimmung eines Senders mit mehreren LEDs zu einer Einzelfarbklassifizierung
Title (fr)
Appareil et procédés de réglage d'émetteur avec plusieurs DEL pour corbeille à couleur unique
Publication
Application
Priority
- US 201113106808 A 20110512
- US 201113106810 A 20110512
Abstract (en)
Apparatus and methods are provided for tuning the color of an LED-based lamp (100) to a desired color or color temperature. The lamp (100) can include two or more independently addressable groups of LEDs associated with different colors or color temperatures. The color (or color temperature) of the output light is tuned by controllably dividing an input current among the groups of LEDs. An optimal division of the input current is determined based on a linear interpolation between measured values of color or color temperature produced by at least two different divisions of the input current. Tuning can be performed once, e.g., during manufacture, and the lamp (100) does not require active feedback components for maintaining color temperature.
IPC 8 full level
H05B 33/08 (2006.01); H05B 44/00 (2022.01)
CPC (source: CN EP US)
F21K 9/00 (2013.01 - EP); F21K 9/62 (2016.07 - EP); H05B 45/20 (2020.01 - CN EP US); F21K 9/60 (2016.07 - EP); F21Y 2113/17 (2016.07 - EP)
Citation (applicant)
- US 2010091491 A1 20100415 - JIANG WU [US], et al
- US 2010259930 A1 20101014 - YAN XIANTAO [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2523534 A2 20121114; EP 2523534 A3 20130821; EP 2523534 B1 20190807; CN 102781140 A 20121114; CN 102781140 B 20160203; CN 105657893 A 20160608; CN 105657893 B 20190607; JP 2012238596 A 20121206; JP 6244082 B2 20171206
DOCDB simple family (application)
EP 12166091 A 20120428; CN 201210152355 A 20120514; CN 201610006714 A 20120514; JP 2012109292 A 20120511