Patent ID: 6585380
Filing Date: 2003-07-01
Classification: G02B,H04N

Abstract:
An illumination apparatus comprising:a light source group in which a plurality of light source sections, each constituted by a luminous body and a reflector comprising an ellipsoidal surface having one focal point located near a center of gravity of said luminous body, are arranged; an integrator section, constituted by at least two integrator plates, for homogenizing a quantity of light emitted from said light source group, said integrator section being arranged in an optical axis direction of said light; and at least one mirror element, having a reflecting surface near the other focal point of said ellipsoidal surface of at least one said reflector, for reflecting a luminous flux from said light source group toward said integrator section; wherein said illumination apparatus as a whole has an optical axis forming a predetermined angle which is not nearly or substantially parallel with an optical axis of said at least one reflector.