Light source device
AssigneeNichia Corporation
InventorsNorimasa Yoshida, Tsuyoshi Okahisa
Life of this patent
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Abstract
A light source device includes: a plurality of independently operable light emitting devices; and a first lens having a lower face that faces the light emitting devices, and a upper face opposite the lower face. The lower face of the first lens includes: an entrance part where light from the light emitting devices enters, the entrance part being a concave portion overlapping the light emitting devices in a top plan view, the entrance part including: a lower face convex portion provided in a lower face of the concave portion, and an angular portion protruding towards the light emitting devices; and a light guide part located outward of the entrance part and having an oblique face tilted toward an optical axis of the first lens.
Claims14
A light source device comprising:
- a substrate;
- a plurality of independently operable light emitting devices mounted on the substrate;
- and
- a first lens comprising:
- a main body having a lower face that faces the light emitting devices, and a upper face opposite the lower face;
- wherein the lower face of the main body part comprises:
- an entrance part where light from the light emitting devices enters, the entrance part being a concave portion overlapping the light emitting devices in a top plan view, wherein the entrance part comprises:
- a lower face convex portion provided in a lower face of the concave portion, and
- an angular portion protruding towards the light emitting devices, and
- a light guide part located outward of the entrance part and having an oblique face tilted toward an optical axis of the first lens, and
- a marginal part comprising:
- an upper portion extending laterally outward from a periphery of the main body, and
- a leg portion extending downward from the upper portion and having a lower face that is fixed to an upper face of the substrate.
Dependencies are inferred from the claim text.