Light-emitting device
AssigneeEnnostar Corporation
InventorsKai-Hung CHENG, Ku-Cheng LIN, Chun-Min LIN
Life of this patent
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Abstract
A light-emitting device includes a substrate, a light-emitting element, and a lens member. The light-emitting element is disposed on the substrate. The lens member is disposed on the substrate and seals the light-emitting element and includes a central axis, a lower surface, and an upper surface having a central recessed surface, a reflective surface and a convex surface. The central axis is substantially perpendicular to the substrate. The reflective surface is arranged between the central concave surface and the convex surface, and is seamlessly connected to the convex surface at the upper end. The lower surface is arranged above the substrate.
Claims18
A light-emitting device, comprising:
- a substrate;
- a light-emitting element, disposed on the substrate;
- and
- a lens member, disposed on the substrate and sealing the light-emitting element, and including a central axis, a lower surface, and an upper surface having a central recessed surface, a reflective surface and a convex surface,
- wherein, the central axis is substantially perpendicular to the substrate;
- wherein, the reflective surface is arranged between the central recessed surface and the convex surface, and seamlessly connected to the convex surface at an upper end, and the lower surface is arranged above the substrate;
- wherein, the central recessed surface has a recess depth measured along the central axis, the light-emitting element has a first height measured along the central axis, the lens member has a second height measured from the substrate to the upper end in a direction parallel the central axis, a ratio of the second height to the recess depth is between 2.5 and 4.5.
Dependencies are inferred from the claim text.