Patent ID: 7011414

Claim:
A projection system in which an optical splitter splits a beam emitted from a light source into individual color beams, a scrolling unit scrolls the individual color beams and focuses the scrolled color beams on a light valve, and the light valve processes the scrolled color beams according to an input image signal to form a color image, magnifies the color image, and projects the magnified color image toward a screen, wherein the light valve is disposed such that its long axis is in a direction in which the optical splitter splits the incident beam into individual color beams, so that light efficiency is increased; wherein the screen is disposed such that its short axis is in the lone axial direction of the light valve; and wherein first and second reflection mirrors are included, wherein the first reflection mirror is inclined by 45 degrees in two planes with respect to an optical axis of a beam incident on the first reflection mirror, and the second reflection mirror is inclined by 45 degrees in two planes with respect to an optical axis of a beam incident on the second reflection mirror, such that a beam reflected by the second reflection mirror is rotated by 90 degrees from the beam incident upon the first reflection mirror.