WHITE LIGHT ILLUMINATION DEVICE

摘要

A converter (2) of a CE:YAG ceramic converts blue excitation light into yellow light of a color location near the white point in the chromaticity diagram. A filter (3) attenuates the light fraction below 530 nm so as to obtain white illumination light.

主权项

1. An illumination device for generating white light, comprising:
a semiconductor excitation light source for generating blue light (1); a converter (2) exhibiting sufficient conversion efficiency at elevated operating temperatures and permitting conversion from blue into yellow light of a color location near the white point in the chromaticity diagram; and a filter (3) for attenuating the green light component in the near-white point light as emitted from the converter so as to obtain white illumination light as a result.