Patent ID: 7929064

Claim:
A video display apparatus comprising: a light source unit for radiating a light beam; a polarization converter for converting the light beam to one of an S polarized light beam and a P polarized light beam; an optical characteristics switching element for electrically and periodically converting polarization of the light beam outputted by said polarization converter with respect to each of a plurality of wavelength bands to control the wavelength bands for generating a plurality of color light beams; a video display element, as light valve element, for forming an optical image from the plurality of color light beams in accordance with a video signal; an image forming optical system comprising a plurality of lenses; and a projector for projecting the optical image formed by said video display element, wherein: the plurality of color light beams are radiated to said video display element through said image forming optical system, said optical characteristics element simultaneously outputs the plurality of color light beams and radiates the plurality of color light beams at different areas of said video display element, and said plurality of color light beams sequentially move between said different areas.