Patent ID: 6726334
Filing Date: 2004-04-27
Classification: G03B,H04N

Abstract:
An illuminator which emits trichromatic light including components whose wavelengths correspond to three primary colors, respectively, the apparatus comprising:a light source to emit the trichromatic light; and a pair of fly-eye lenses formed from a plurality of lens elements, being provided at the side of the light source from which the trichromatic light goes out, and which separates the trichromatic light emitted from the light source into primary-color light components and allows the separated primary-color light components to pass through, thereby uniformizing the trichromatic light output; and a wavelength-selective optical aperture filter provided in the neighborhood of one of the pair of fly-eye lenses that is farther from the light source and which consists of zones working as predetermined optical apertures, of which one selectively attenuates or shields a component of the trichromatic light, whose wavelength corresponds to at least one of the three primary colors, while the other zones allow the light components whose wavelengths correspond to the other primary colors to pass through.