A method and apparatus for compensating for deficiency in the illumination light from a light source is provided, where the spectrum in the visible range of light from the light source is determined, and a deficiency at a wavelength or band of wavelengths in the visible range of light is determined therefrom,...http://www.google.fr/patents/US7131762?utm_source=gb-gplus-shareBrevet US7131762 - Color rendering of illumination light in display systems
Color rendering of illumination light in display systems
