Patent ID: 7773178

Claim:
A reflective liquid crystal projector comprising at least one liquid crystal device and a projection optical system, said liquid crystal device changing illumination light from a light source into image light, said projection optical system focusing said image light onto a screen, said illumination light being guided to an incidence plane of said liquid crystal device, and said image light being emanated from said incidence plane, said liquid crystal projector comprising: a polarizer provided in said incidence plane side of said liquid crystal device, said polarizer performs as an analyzer to said image light; and an inorganic form birefringence layer provided between said polarizer and said liquid crystal device, wherein said form birefringence layer is plural thin films, said thin films comprising at least two kinds of thin film layers with different refractive indexes alternatively stacked, wherein the optical thickness of said thin film layer is from λ/100 to λ/5, wherein λ is the wavelength of said illumination light that enters said liquid crystal device.