JP2013161552A5 - Light emitting device, light projecting device, and laser irradiation device - Google Patents

Claims (18)

A plurality of laser generators arranged in a first direction and emitting laser light;
A fluorescent member that emits fluorescence when irradiated with the laser beam;
A condenser lens that transmits laser light emitted from the plurality of laser generators and irradiates the fluorescent member;
With
The condensing lens is not condensing on said first direction the laser light, the light emitting device, characterized by condensing the laser beam in a second direction crossing the first direction. The light emitting device according to claim 1, wherein the plurality of laser generators are provided on the same substrate. The light emitting device according to claim 1, wherein the plurality of laser generators are arranged in a direction orthogonal to a major axis direction of the laser light. The plurality of laser generators are arranged so that the optical axes of the laser beams emitted from the plurality of laser generators approach each other as they move away from the laser generator. The light emitting device according to any one of the above. The fluorescent member includes an irradiation surface irradiated with the laser beam,
Said plurality of intersections between the irradiation surface of the fluorescent member and the optical axis of the laser light transmitted through the condensing lens and emitted from the laser generator emitting according to claim 4, characterized in that a 1 point apparatus. The fluorescent member includes an irradiation surface irradiated with the laser beam,
The intersection of the optical axis of each laser beam emitted from the plurality of laser generators and transmitted through the condenser lens and the irradiation surface of the fluorescent member is a plurality of points. The light emitting device according to claim 1. The plurality of intersections include a point that emits white light when irradiated with the laser light and a point that emits orange light when irradiated with the laser light. The light-emitting device of description. The fluorescent member includes a white phosphor that emits white light when irradiated with the laser light, and an orange phosphor that emits orange light when irradiated with the laser light,
The white phosphor functions as a light source for a vehicle headlamp,
The light emitting device according to claim 7, wherein the orange phosphor functions as a light source of a vehicle direction indicator. The light emitting device according to any one of claims 6 to 8, wherein the plurality of laser generators are individually driven.   The light-emitting device according to claim 1, wherein the condenser lens includes a cylindrical lens.   A housing member that houses the plurality of laser generators and that has an opening on the laser light emission side;
  A cover member attached to the opening of the storage member and having a function of transmitting the laser beam;
  With
  The light-emitting device according to claim 1, wherein the condenser lens is fixed to the cover member.   It is used as a light source for vehicles, The light-emitting device of any one of Claims 1-11 characterized by the above-mentioned.   A light projecting device comprising: the light emitting device according to claim 1; and a light projecting member that projects light emitted from the light emitting device. The light projecting device according to claim 13 , wherein the light projecting member includes a reflective member that reflects light emitted from the fluorescent member. The light projecting device according to claim 14 , wherein the reflecting member is formed with a through hole through which the laser light from the laser generator passes and reaches the fluorescent member. The light projecting device according to any one of claims 13 to 15 , wherein the light projecting member includes a lens that transmits light emitted from the fluorescent member. The light projecting device according to any one of claims 13 to 16 , wherein the light projecting device is used as a vehicular lamp. A plurality of laser generators arranged in a first direction and emitting laser light;
A condenser lens that transmits laser light emitted from the plurality of laser generators and irradiates the fluorescent member;
With
The condensing lens does not condense the laser light in the first direction, and condenses the laser light in a second direction intersecting the first direction.