Light source device
AssigneeNichia Corporation
InventorsTsuyoshi Okahisa, Norimasa Yoshida
Life of this patent
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Abstract
A light source device includes: a light-shielding member defining an opening; a light-guide member located in the opening in a top view and including two or more divided lens portions; and a plurality of light-emitting parts disposed such that each of the plurality of light-emitting parts corresponds to a respective one of the lens portions, each of the plurality of light-emitting parts being configured to be individually turned on. Each of the light-emitting parts has an upper surface serving as a light-emitting surface. The two or more lens portions are Fresnel lenses. Irradiation areas corresponding to the light-emitting parts are at least partially different from each other.
Claims19
A light source device comprising:
- a light-shielding member defining an opening;
- a light-guide member located in the opening in a top view and including two or more divided lens portions;
- and
- a plurality of light-emitting parts disposed such that each of the plurality of light-emitting parts corresponds to a respective one of the lens portions, each of the plurality of light-emitting parts being configured to be individually turned on,
- wherein each of the light-emitting parts has an upper surface serving as a light-emitting surface,
- wherein the two or more lens portions are Fresnel lenses, and
- wherein irradiation areas corresponding to the light-emitting parts are at least partially different from each other.
A light source device comprising:
- a light-shielding member defining an opening;
- a light-guide member located in the opening in a top view and including two or more divided lens portions;
- and
- a plurality of light-emitting parts disposed such that each of the plurality of light-emitting parts corresponds to a respective one of the lens portions,
- wherein each of the light-emitting parts has an upper surface serving as a light-emitting surface,
- wherein the plurality of light-emitting parts include four first light-emitting parts arranged such that a shape formed by imaginary lines connecting centers of the light-emitting surfaces of the four first light-emitting parts is a rectangle, and such that portions of the light-emitting surfaces are covered with a light-shielding unit outside the opening, and at least one second light-emitting part disposed directly between two light-emitting parts that are disposed at both ends of a corresponding side of the rectangle, and
- wherein a center of a light-emitting surface of the second light-emitting part is positioned inside the rectangle.
Dependencies are inferred from the claim text.