Light source device
AssigneeNichia Corporation
InventorsTsuyoshi Okahisa, Norimasa Yoshida
Life of this patent
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Abstract
A light source device includes: a mounting board; a plurality of light-emitting parts disposed on the mounting board, each of the plurality of light-emitting parts being configured to be individually turned on; a light-shielding member defining an opening; and a light-guide member supported by the light-shielding member, the light-guide member comprising a Fresnel lens portion, wherein, in a top view, the Fresnel lens portion is located within an area of the opening of the light-shielding member. In the top view, irradiation areas of the respective light-emitting parts are at least partially separated from each other.
Claims13
A light source device comprising:
- a mounting board;
- a plurality of light-emitting parts disposed on the mounting board, each of the plurality of light-emitting parts being configured to be individually turned on;
- a light-shielding member defining an opening;
- a light-guide member supported by the light-shielding member, the light-guide member comprising a Fresnel lens portion, wherein, in a top view, the Fresnel lens portion is located within an area of the opening of the light-shielding member;
- and
- at least one convex lens spaced from an entirety of a lower surface of the light-guide member and located at least partially above the plurality of light emitting parts and below the Fresnel lens portion of the light-guide member;
- wherein, in the top view, irradiation areas of the respective light-emitting parts are at least partially separated from each other.
Dependencies are inferred from the claim text.