摘要:
A headlamp includes: a laser diode for emitting laser beam; a light-emitting section for emitting light when irradiated with the laser beam emitted from the laser diode; and a cooling device for cooling the light-emitting device by use of a fluid. With the arrangement, it is possible to prevent an increase in temperature of the light-emitting section which is irradiated with excitation light, and thereby to realize a light source of long lifetime.
摘要:
A light emitting device of the present invention includes: a laser diode group which generates a plurality of laser beams; a cylindrical light emitting element which emits incoherent light in response to the plurality of laser beams; and a light guide irradiation section which (i) guides the plurality of laser beams entered via a light incidence plane toward a light irradiation plane and (ii) irradiates the light irradiation area of the cylindrical light emitting element with the plurality of laser beams thus guided. The light irradiation plane of the light guide irradiation section has an area which is smaller than that of the light incidence plane.
摘要:
A light emitting device of the present invention includes: a laser diode group which generates a plurality of laser beams; a cylindrical light emitting element which emits incoherent light in response to the plurality of laser beams; and a light guide irradiation section which (i) guides the plurality of laser beams entered via a light incidence plane toward a light irradiation plane and (ii) irradiates the light irradiation area of the cylindrical light emitting element with the plurality of laser beams thus guided. The light irradiation plane of the light guide irradiation section has an area which is smaller than that of the light incidence plane.
摘要:
A headlamp 1 includes (i) a laser element 2 for emitting a laser beam, (ii) a light emitting section 4, including a sealing material made from an inorganic material, for emitting fluorescence upon receiving the laser beam emitted from the laser element 2, and (iii) a heat sink 7 for releasing, via a contact surface of the heat sink 7 which contact surface is in contact with the light emitting section 4, heat generated in the light emitting section 4 in response to the laser beam emitted onto the light emitting section 4, the light emitting section 4 existing within a range which is determined on the basis of the contact surface and with which desired heat releasing efficiency is obtained.
摘要:
A headlamp 1 includes (i) a laser element 2 for emitting a laser beam, (ii) a light emitting section 4, including a sealing material made from an inorganic material, for emitting fluorescence upon receiving the laser beam emitted from the laser element 2, and (iii) a heat sink 7 for releasing, via a contact surface of the heat sink 7 which contact surface is in contact with the light emitting section 4, heat generated in the light emitting section 4 in response to the laser beam emitted onto the light emitting section 4, the light emitting section 4 existing within a range which is determined on the basis of the contact surface and with which desired heat releasing efficiency is obtained.
摘要:
Includes the step of crystal-growing a group III-V compound semiconductor layer containing at least nitrogen and arsenic as group V elements on a single crystal substrate. The step of crystal-growing the compound semiconductor layer includes the stop of supplying a nitrogen source material to the single crystal substrate so that the nitrogen source material interacts with aluminum at least on a crystal growth surface of the compound semiconductor layer. Thus, a method is provided for forming a group III-V compound semiconductor layer containing a group III-V compound semiconductor containing arsenic as a group V element and also containing nitrogen mix-crystallized therewith, which has superb light emission characteristics.
摘要:
A method of growing a Group III or Group III-V nitride layer on a semiconductor substrate includes the steps of: locating, within a chamber, the semiconductor substrate having on its surface a Group III-V semiconductor layer incorporating a substance which is strongly reactive with nitrogen; and subsequently effecting nitridation of the Group III-V semiconductor layer by introducing a species containing nitrogen into the chamber to cause a reaction between the nitrogen and the substance.
摘要:
A headlamp (1) that utilizes a laser beam includes a scattered-light emitting unit (21) that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam.
摘要:
Provided is a light projection structure (10), including: a reflective member (11) including a reflective surface (11a), the reflective surface (11a) being formed as a concave surface having a focal point (f) positioned near its apex (t); and a light emitting member (12) disposed at the focal point (f) and its vicinity, for emitting light when excited by excitation light.
摘要:
A headlamp (1) that utilizes a laser beam includes a scattered-light emitting unit (21) that emits scattered light upon receipt of a laser beam deviated from a predetermined path through which the laser beam is to pass or a predetermined irradiation region that is to be irradiated by the laser beam.