Patent ID: 6141151
Filing Date: 2000-10-31
Classification: H04N

Abstract:
A projection-display apparatus, comprising on an optical axis:(a) a color-separation optical system situated so as to receive an illumination light flux comprising multiple colors, the color-separation optical system splitting the illumination light flux into multiple color-light fluxes;(b) for each color-light flux, a respective color-light light valve situated so as to receive and modulate the respective color-light flux in an image-forming way based on image-encoding electrical signals received by the respective color-light light valve;(c) a color-combining optical system for receiving and combining the modulated color-light fluxes to form a recombined light flux; and(d) a projection optical system for projecting the recombined light flux onto a viewing surface, the projection optical system comprising an aperture stop that defines principal rays, the color-combining optical system being situated where the principal rays are parallel to the optical axis.