Patent ID: 8164620
Filing Date: 2012-04-24
Classification: G02B,H04N

Abstract:
1. A stereo projection optical system, comprising: an image engine configured for providing light superimposed spatial information; a color selector positioned to receive a light output of the image engine and configured for selectively modifying the polarization of the light output according to the wavelength of the light output; a transmission-type light modulator positioned to receive an emergent light of the color selector, the transmission-type light modulator switchably operating between a dark state in which the transmission-type light modulator transmits the emergent light with no change in polarization and a bright state in which the transmission-type light modulator converts polarization of the emergent light into a light beam polarization of which is orthogonal to that of the emergent light and emits the light beam; and wherein the image engine comprises a light source assembly, first and second light separators positioned to receive the light outputs from the light source assembly, three image assimilators positioned to receive the light outputs form the first and second light separators, at least a reflective apparatus disposed between one of the image assimilators and one of the light separators, a light combiner positioned to receive the light outputs of the image assimilators and a retarder disposed between one of the image assimilators and the light combiner.