RADIATION GENERATING APPARATUS AND A METHOD OF GENERATING RADIATION

摘要

Radiation generating apparatus is disclosed. The apparatus comprises a first radiation generating source for generating radiation comprising a first range of wavelengths, a second radiation generating source for generating radiation comprising a second range of wavelengths and a photoluminescent material which is arranged to absorb radiation in the first and second wavelength range and generate radiation comprising a third range of wavelengths. The material comprises a first facet which is arranged to receive radiation from the first radiation source from a first direction and a second facet which is arranged to receive radiation from the second radiation source from a second direction. The first and second directions are substantially collinear, but opposing directions to provide for an increased illumination of the material across the same area of the material.