Michael R. Krames,Aurelien J. F. David,Emil Radkov,Willem Smitt
申请号：
US16397001
公开号：
US20190353839A1
申请日:
2019.04.29
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Methods and apparatus for providing circadian-friendly LED light sources are disclosed. A light source is formed to include a first LED emission (e.g., one or more LEDs emitting a first spectrum) and a second LED emission (e.g., one or more LEDs emitting a second spectrum) wherein the first and second LED emissions are combined in a first ratio and in a second ratio such that while changing from the first ratio to the second ratio the relative circadian stimulation is varied while maintaining a color rendering index above 80.
