Patent ID: 7628494
Filing Date: 2009-12-08
Classification: G03B,H04N

Abstract:
1. An illuminating apparatus comprising: a polarized light beam splitter having a first light incident surface and a second light incident surface; a first polarized light source device disposed in front of the first light incident surface; and a second polarized light source device disposed in front of the second light incident surface; the first polarized light source device having: the first polarized light source device emitting the illuminating light flux from the first light source device toward the first light incident surface of the polarized light beam splitter as the illuminating light flux having the first polarized light component; the second polarized light source device having: the second polarized light source device emits the illuminating light flux from the second light source device toward the second light incident surface of the polarized light beam splitter as the illuminating light flux having the second polarized light component; the illuminating light flux having the first polarized light component emitted from the first polarized light source device and illuminating light flux having the second polarized light component emitted from the second polarized light source device being both linear polarized light components and having different polarized light axis from each other; the polarized light beam splitter synthesizes the illuminating light flux having the first polarized light component emitted from the first polarized light source device and the illuminating light flux having the second polarized light component emitted from the second polarized light source device to emit; the first light source device having a first ellipsoidal reflector, a first light emitting tube having the light emitting center around the first focal point of the first ellipsoidal reflector, and a first concave lens emitting convergent light from the first ellipsoidal reflector toward the light incident surface in the first polarized light separation prism; and the second light source device having a second ellipsoidal reflector, a second light emitting tube having the light emitting center around the first focal point of the second ellipsoidal reflector, and a second concave lens emitting convergent light from the second ellipsoidal reflector toward the light incident surface in the second polarized light separation prism.