Light flicker is a common but unwelcome phenomenon in conventional lighting applications.
In solid-state lighting, driving or dimming methods also give rise to light flicker. AC LED …

This paper proposes a closed-loop nonlinear scheme for precisely controlling the luminosity
and correlated color temperature (CCT) of a bicolor adjustable light-emitting diode (LED) …

Conventional white-light sources suffer from a fundamental trade-off between color
rendering index and the luminous efficacy; increasing one generally comes at the expense …

Phosphor-converted white light–emitting diodes (LEDs) with separate red and yellow
phosphor layers are investigated under current regulation conditions. This novel packaging …

For a systematic approach to improve the reliability and the white light quality of phosphor
converted light-emitting diodes (LEDs) it is imperative to gain a better understanding of the …

Based on the color theory, a precise chromaticity coordinates tracking strategy for the LED
color-mixing system is proposed. The relationship between the resulting mixing color and …

Phosphor-concentration-dependent characteristics of white light-emitting diodes (LEDs)
under different current regulation conditions were investigated. It is found that the phosphor …

Ray-tracing simulations are used to identify the demands for angular homogeneity of the
white light emitted from phosphor-converted white light-emitting diodes having color …

The complex nature and differences of the luminous and thermal characteristics of red,
green, and blue (RGB) light-emitting diodes (LEDs) make precise color control of RGB LED …

For a systematic approach to improve the reliability and the white light quality of phosphor
converted light-emitting diodes (LEDs) it is imperative to gain a better understanding of the …