Patent ID: 7002641
Filing Date: 2006-02-21
Classification: G02F,H04N

Abstract:
1. A display apparatus comprising: a reflective liquid crystal display element; an illumination optical system adapted to illuminate said reflective liquid crystal display element by light from a light source; and a projection optical system adapted to project light from said reflective liquid crystal display element, wherein said illumination optical system includes a reflector adapted to reflect light from said light source; a lens array adapted to separate light reflected by said reflector into a plurality of luminous fluxes; a condenser optical system adapted to superpose said plurality of luminous fluxes onto said reflective liquid crystal display element; a polarizing beam splitter adapted to guide light of predetermined polarizing direction of light from said condenser optical system onto said reflective liquid crystal display element, analyze light reflected by said reflective liquid crystal display element, and guide light analyzed by said polarizing beam splitter onto said projection optical system; and a ¼ phase difference plate and a double refractive phase compensation element disposed between said polarizing beam splitter and said reflective liquid crystal display element and arranged in this order, and wherein said double refractive phase compensation element is arranged so that a smallest refractive index axial direction of said double refractive phase compensation element is in parallel to an optical axis of said illumination optical system.