Patent ID: 7040767

Claim:
A projection display comprising an optical modulator to modulate a light beam radiating from an illumination unit according to image data and projection optics to magnify and project the light beam emitted from the optical modulator, the illumination unit comprising: three integrator modules that radiate red, green, and blue beams, respectively, with a uniform intensity of light, wherein each of the three integrator modules comprises, at least one compact light source, and a glass rod that transforms a light beam emitted from the at least one compact light source so as to have a uniform light intensity and emits the transformed light beam, and that comprises an incident portion through which the light beam radiates and an emission portion through which the light beam is emitted; and wherein the incident portion comprises a parabolic first reflective surface to collimate the light beam radiating from the at least one compact light source, and the at least one compact light source is located in the vicinity of a focal point of the first reflective surface.