Patent ID: 7731409

Claim:
An illumination device, comprising: light sources, each for emitting light at different respective wavelengths; a first substrate layer; a second substrate layer; and an intermediate substrate layer located between said first and second substrate layers, the intermediate substrate layer comprising: a plurality of apertures formed on a surface thereof; a trunk waveguide configured to receive light from at least one of said light sources; a plurality of optically transparent areas optically aligned with a plurality of apertures in said first substrate layer, said plurality of optically transparent areas configured to allow propagation of light of any wavelength emitted out of said plurality of apertures in said first substrate layer; and a plurality of optically opaque areas optically aligned with a plurality of apertures in the second substrate layer, said plurality of optically opaque areas configured to block passage of any wavelength emitted out of said plurality of apertures in said second substrate layer.