Light-emitting device, floodlight, and vehicle headlight
First Claim
Patent Images
1. A light-emitting device comprising:
- a light-emitting section which emits light in response to a laser beam emitted from a laser light source;
a light control section which controls the laser beam to be guided from the laser light source to the light-emitting section; and
a movement control section which causes the light control section to move, the movement control section changing an illumination position and a spot size of the laser beam in the light-emitting section by changing a relative position of the light control section with respect to the light-emitting section,wherein the light control section comprises at least two movable mirrors which have rotation axis directions different from each other so that the laser beam emitted from the laser light source is sequentially reflected by the at least two movable mirrors so as to be incident on the light-emitting section.
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Accused Products
Abstract
A light-emitting device includes a light-emitting section, a lens, and a movement control section, the movement control section changing an illumination position and a spot size of a laser beam in the light-emitting section by changing a relative position of the lens with respect to the light-emitting section.
38 Citations
17 Claims
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1. A light-emitting device comprising:
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a light-emitting section which emits light in response to a laser beam emitted from a laser light source; a light control section which controls the laser beam to be guided from the laser light source to the light-emitting section; and a movement control section which causes the light control section to move, the movement control section changing an illumination position and a spot size of the laser beam in the light-emitting section by changing a relative position of the light control section with respect to the light-emitting section, wherein the light control section comprises at least two movable mirrors which have rotation axis directions different from each other so that the laser beam emitted from the laser light source is sequentially reflected by the at least two movable mirrors so as to be incident on the light-emitting section. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11)
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6. A light-emitting device compromising:
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a light-emitting section which emits light in response to a laser beam emitted from a laser light source; a light control section which controls the laser beam to be guided from the laser light source to the light-emitting section; and a movement control section which causes the light control section to move, the movement control section changing an illumination position and a spot size of the laser beam in the light-emitting section by changing a relative position of the light control section with respect to the light-emitting section, the light control section being a convex lens or a concave mirror, and the movement control section being an actuator which causes the convex lens or the concave mirror to move in two directions different from each other.
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12. A vehicle headlight comprising:
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a light-emitting section which emits light in response to a laser beam emitted from a laser light source; a light control section which controls the laser beam to be guided from the laser light source to the light-emitting section; and a movement control section which causes the light control section to move, the movement control section changing an illumination position and a spot size of the laser beam in the light-emitting section by changing a relative position of the light control section with respect to the light-emitting section, wherein the light control section comprises at least two movable mirrors which have rotation axis directions different from each other so that the laser beam emitted from the laser light source is sequentially reflected by the at least two movable mirrors so as to be incident on the light-emitting section. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification