JP2006292903A5 - - Google Patents

Claims (9)

A light source device having an irradiation direction in front, a reflector disposed behind a luminescent spot of a light source and having an inner surface of a perfect circular curved surface, and a spherical reflector disposed in front of the luminescent spot of the light source And a ring-shaped annular lens having a curved transmission surface that transmits the light reflected by the light and emits the light in a predetermined direction.   2. The light source device according to claim 1, wherein the annular lens includes a spherical reflection surface centered on a bright spot of the light source as a lens reflection surface.   The light source device according to claim 2, wherein the spherical lens reflecting surface is formed on an outer edge surface of the annular lens.   The light source device according to claim 2, wherein the spherical lens reflecting surface is formed on an inner edge surface of the annular lens.   5. The light source device according to claim 1, wherein a transmission surface which is a curved surface of the annular lens is formed on a front side surface of the annular lens.   5. The light source device according to claim 1, wherein a transmission surface which is a curved surface of the annular lens is formed on a front side surface and a rear side surface of the annular lens.   The peripheral front end of the spherical reflector disposed behind the bright spot is in contact with the rear surface of the annular lens, and the bright spot of the light source is located on the plane of the contact surface between the spherical reflector and the annular lens. The light source device according to claim 1. A projector including a light source device having an irradiation direction in front, a light source side optical system, a display element, a projection side optical system, and a power supply circuit and a projector control circuit;
The light source device has a bright spot, a spherical reflector disposed behind the bright spot , and an annular lens disposed in front of the bright spot ,
The annular lens disposed in front of the bright spot transmits a light reflected by the spherical reflector to transmit a curved surface that is emitted in a predetermined direction, and a spherical lens reflection centered on the bright spot. With a surface,
The projector according to claim 1, wherein the spherical reflector disposed behind the luminescent spot has an inner surface as a perfect circular curved surface and a center of curvature at the front of the luminescent spot . A spherical lens reflecting surface in the annular lens is formed on an inner edge surface of the annular lens, and a curved transmission surface in the annular lens is formed on at least the front side surface of the front side surface and the rear side surface of the annular lens. The projector according to claim 8.