Patent ID: 7177069
Filing Date: 2007-02-13
Classification: G02F,H01L

Abstract:
1. A white light source, comprising: a light emission device for emitting a radiation beam with at least one radiation frequency in one of a red spectral region and an infrared spectral region; a nonlinear-optical element disposed downstream of said light emission device and into said nonlinear-optical element the radiation beam is coupled and converted into a frequency-mixed radiation beam at least partially by generation of at least one mixed frequency by at least one of frequency mixing, frequency doubling, summation frequency formation, and difference frequency formation; and a luminescence conversion element disposed downstream of said nonlinear-optical element and into said luminescence conversion element the frequency-mixed radiation beam is coupled and converted at least partially into light radiation of one of longer wavelengths and shorter wavelengths in such a way that an emission spectrum of the radiation beam radiated by said luminescence conversion element has mutually complementarily colored spectral regions.