Patent ID: 6527420
Filing Date: 2003-03-04
Classification: F21V,H04N

Abstract:
An illuminating module for a display apparatus, said illuminating module comprising:first and second light sources that are spaced apart from each other in a first direction; a curved first reflector having a hemispherical first reflecting surface facing in a second direction that is transverse to the first direction, and a first focal point that is coincident with said first light source; a curved second reflector having a hemispherical second reflecting surface that faces in a third direction parallel to the second direction and that is spaced apart from said first reflector in the first direction, and a second focal point that is coincident with said second light source; a curved third reflector having a parabolic third reflecting surface that faces and that is spaced apart from said first reflecting surface in the second direction, and a third focal point that is coincident with said first focal point, wherein a first portion of light rays from said first light source radiates toward said third reflecting surface, while a second portion of the light rays from said first light source radiates toward said first reflecting surface and is reflected thereby to combine with the first portion of the light rays; a curved fourth reflector having a parabolic fourth reflecting surface that faces and that is spaced apart from said second reflecting surface in the third direction, and a fourth focal point that is coincident with said second focal point, wherein a first part of light rays from said second light source radiates toward said fourth reflecting surface, while a second part of the light rays from said second light source radiates toward said second reflecting surface and is reflected thereby to combine with the first part of the light rays; a fifth reflector disposed between said third and fourth reflectors and having a planar fifth reflecting surface facing said third reflecting surface in a fourth direction that is transverse to the second direction, wherein the light rays received by said third reflecting surface are reflected thereby to travel in the fourth direction toward said fifth reflector, and the light rays received by said fifth reflecting surface are reflected thereby to travel in a fifth direction transverse to the fourth direction and parallel to an optical axis; and a sixth reflector disposed between said third and fourth reflectors and having a planar sixth reflecting surface facing said fourth reflecting surface in a sixth direction that is transverse to the third direction, wherein the light rays received by said fourth reflecting surface are reflected thereby to travel in the sixth direction toward said sixth reflector, and the light rays received by said sixth reflecting surface are reflected thereby to travel in a seventh direction transverse to the sixth direction and parallel to the optical axis.