Patent ID: 6327020
Filing Date: 2001-12-04
Classification: G03B

Abstract:
A full-surround spherical screen projection system comprising:a spherical screen formed inside of a sphere;a projector for projecting light toward the inside of said sphere, said projector emitting a pre-distorted image of a subject, which pre-distorted image is configured to be cast on said spherical screen;a first reflecting mirror comprising either one of a plane mirror or a concave mirror, placed away from the center of said sphere inside of said sphere, for reflecting the light toward the outside of said sphere; anda second reflecting mirror constituting a convex mirror reflecting the light from said first reflecting mirror to said spherical screen, said second reflecting mirror being disposed further away from the center of said sphere than is said first reflecting mirror, said convex mirror being configured to compensate for the distortions of the pre-distorted image, whereby an image of the subject is cast on the spherical screen without distortions.