Patent ID: 8727541
Filing Date: 2014-05-20
Classification: G02B,G03B,H01L,H04N

Abstract:
1. A projector comprising: a light emitting device; a light modulation device adapted to modulate a light beam emitted from the light emitting device in accordance with image information; and a projection device adapted to project the image formed by the light modulation device, wherein the light emitting device includes at least a part of the active layer constitutes a first gain region and a second gain region, a first surface and a second surface out of exposed surfaces of the active layer opposed to each other, the first gain region is disposed linearly from the first surface to the second surface of the active layer so as to be tilted in a clockwise direction with respect to a perpendicular of the first surface in a plan view along a stacking direction of the active layer and the first cladding layer, the second gain region is disposed linearly from the first surface to the second surface of the active layer so as to be tilted in a counterclockwise direction with respect to a perpendicular of the first surface in the plan view along the stacking direction, and the optical member has an entrance surface that is parallel to the second surface and in which the light beams emitted from the second surface of the first gain region and the second gain region enter, a first planar surface from which a light beam emitted from the second surface of the first gain region that enters the optical member exits so as to be tilted toward one side with respect to the second surface, and a second planar surface from which a light beam emitted from the second surface of the second gain region that enters the optical member exits so as to be tilted toward another side with respect to the second surface, the optical member refracting the light beams emitted respectively from the second surface of the first gain region and the second gain region to thereby emit the light beams as light beams proceeding in the same direction.