Patent ID: 9389427
Filing Date: 2016-07-12
CPC Classification: G02B,G03B,H04N

Claim Text:
1. An optical system configured to guide light modulated by a reflective light modulator to a projection lens configured to project the light onto a target plane, the optical system comprising: a polarization beam splitter configured to guide each of first colored light as p-polarized light and second colored light as s-polarized light to a corresponding one of reflective optical modulators that are different from each other, and to synthesize light fluxes modulated by the reflective optical modulators with each other; a beam splitter arranged between the polarization beam splitter and the projection lens and configured to split the first colored light in accordance with a polarization direction of the first colored light and to transmit or reflect the second colored light irrespective of a polarization direction of the second colored light; and a half-wave plate arranged between the polarization beam splitter and the beam splitter, wherein the first colored light is light having a wavelength longer than that of the second colored light.