Patent ID: 8810739
Filing Date: 2014-08-19
Classification: G02F,G03B,H04N

Abstract:
1. A projection type display apparatus comprising: a light source; a plurality of liquid crystal panels to each of which a beam of light of a different wavelength region is supplied from the light source; a light-combining optical system that combines beams of light emitted from the plurality of liquid crystal panels and emits the combined beam of light; and a projection optical system that projects the beam of light combined by the light-combining optical system, wherein the plurality of liquid crystal panels include two or more liquid crystal panels serving as other liquid crystal panels in which the same liquid crystal material, containing liquid crystal molecules, is used in liquid crystal layers thereof, a liquid crystal material, containing liquid crystal molecules, different from the liquid crystal material used in the other liquid crystal panels is used in a liquid crystal layer of a liquid crystal panel for a short wavelength region, and in the liquid crystal panel for the short wavelength region to which a beam of light of the shortest wavelength region is supplied among the plurality of liquid crystal panels, an integral value obtained by integrating absorbance of the liquid crystal layer of the liquid crystal panel for the short wavelength region in a wavelength range from 300 nm to 350 nm is smaller than those in any of the other liquid crystal panels.