Light source circuitry

作者: Erp Josephus Adrianus Maria Van

DOI:

关键词: Light-emitting diodeLight sourceOptoelectronicsControl signalCurrent (fluid)PhysicsChromaticityOpticsPulse-width modulation

摘要: Light source circuitry comprises a first group of one or more light emitting diodes operable to emit color, second and third wherein the first, groups are arranged such that, when fixed current arrives at circuitry, is shared between groups, configured that proportion flows through each controllable in dependence on received control signal remainder group. The allows chromaticity combined emissions be varied gradually across range using single also without requiring use pulse width modulation (PWM)

参考文章(16)
Junjie Zheng, Yuhui Chen, John William Kesterson, Led driver with multiple feedback loops ,(2008)
Andrew J. Mrizek, Gary Hurtz, Karl Richard Volk, Current source methods and apparatus for light emitting diodes ,(2001)
Andrew Dummer, Antony P. Van de Ven, Heidi Dieringer, Jason Taylor, Gauss Ho Ching So, Paul Kenneth Pickard, Semiconductor light emitting devices having selectable and/or adjustable color points and related methods ,(2012)
Xiaoli Yao, Liang'an Ge, Circuit for adjusting LED current ,(2011)