Light emitting device
AssigneeNichia Corporation
InventorsTakuya Nagamoto, Koichi Amari, Yuji Sakakihara
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Abstract
A light-emitting device includes a light-emitting element having a light-emitting surface, and a plurality of protruding portions being separated from each other and disposed on the light-emitting surface. The protruding portions are transparent. Each of the protruding portions includes a light guide portion and a light distribution control portion. The light guide portion has a columnar configuration and is provided at a light-emitting surface side of the protruding portion. The light distribution control portion is provided on the light guide portion. The light distribution control portion is asymmetric with respect to a central axis of the light guide portion and has a tilted surface that is tilted with respect to the central axis.
Claims16
A light-emitting device, comprising:
- a light-emitting source element having a light-emitting surface;
- and
- a plurality of protruding portions being separated from each other and disposed on the light-emitting surface of the light-emitting source element, the protruding portions being transparent,
- each of the protruding portions including a light guide portion and a light distribution control portion, the light guide portion having a columnar configuration and being provided at a light-emitting surface side of the protruding portion, the light distribution control portion being provided on the light guide portion,
- the light distribution control portion being asymmetric with respect to a central axis of the light guide portion and having a tilted surface that is tilted with respect to the central axis.
A light-emitting device, comprising:
- a light-emitting source element having a light-emitting surface;
- and
- a plurality of protruding portions being separated from each other and disposed on the light-emitting surface of the light-emitting source element, the protruding portions being transparent,
- each of the protruding portions having a bottom surface and a tilted surface, the bottom surface being a circle or an n-gon (n being an integer of 5 or more), the tilted surface being tilted with respect to the bottom surface,
- each of the protruding portions being asymmetric with respect to an axis perpendicular to the bottom surface, the axis passing through a center of the bottom surface.
Dependencies are inferred from the claim text.