Patent ID: 8002442

Claim:
A color filter ( 1 ) for the generation of colored light fields for illumination purposes, comprising: on a flat transparent substrate ( 2 ), an interference-antireflection layer ( 3 ) at least on one side ( 21 , 22 ), where an additional, multilayered interference filter layer ( 4 ) is deposited on the masked side ( 22 ), which layer comprises alternately first and second layers ( 41 , 42 ), where the first layers ( 41 ) have a first refractive index and the second layers ( 42 ) have a second refractive index, which is higher than the first refractive index of the first layers ( 41 ), and where the interference-antireflection layer has at least one first and at least one second layer ( 31 , 32 ), where the refractive index of the second layer ( 32 ) is higher than the refractive index of the first layer ( 31 ), and where the layer thicknesses of the additional, multilayered interference filter layer ( 4 ), taking into consideration the underlying interference-antireflection layer ( 3 ), are designed in such a way that the additional, multilayered interference filter layer ( 4 ), together with the interference-antireflection layer ( 3 ) produce a color filter layer system ( 5 ), which has at least one edge in the transmission spectrum in the visible spectral range, which separates a reflecting wavelength range from a wavelength range within which light is transmitted through the color filter layer system, and where the additional, multilayered interference filter layer ( 4 ) covers at least one first area ( 6 ) of the substrate ( 2 ) and leaves uncovered at least one second area ( 7 ), and the second area is made antireflective as a result of the interference-antireflection layer ( 3 ).