Light emitting device, vehicle headlamp, illumination device, and laser element
First Claim
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1. A light emitting device comprising:
- at least one excitation light source for emitting excitation light, each of the at least one excitation light source being a semiconductor laser;
at least one concave mirror for converging the excitation light emitted from the at least one excitation light source;
a light emitting section for emitting fluorescence by receiving the excitation light converged by the at least one concave mirror, the light emitting section having a first surface which receives the excitation light and a second surface which faces away from the first surface;
a heat sink which is in contact with the second surface of the light emitting section; and
another concave mirror for reflecting the fluorescence emitted from the light emitting section,wherein the light emitting section and the another concave mirror are away from each other without contacting each other.
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Abstract
A light emitting device of the present invention includes a light-emitting section for generating fluorescence by receiving a laser beam, and a light irradiation unit for irradiating a light irradiated surface of the light emitting section with a laser beam that increases regularly in beam diameter in a direction in which the laser beam travels.
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Citations
8 Claims
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1. A light emitting device comprising:
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at least one excitation light source for emitting excitation light, each of the at least one excitation light source being a semiconductor laser; at least one concave mirror for converging the excitation light emitted from the at least one excitation light source; a light emitting section for emitting fluorescence by receiving the excitation light converged by the at least one concave mirror, the light emitting section having a first surface which receives the excitation light and a second surface which faces away from the first surface; a heat sink which is in contact with the second surface of the light emitting section; and another concave mirror for reflecting the fluorescence emitted from the light emitting section, wherein the light emitting section and the another concave mirror are away from each other without contacting each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification