Patent ID: 9711698
Date: 2017-07-18
CPC Classifications: G02B,H01L

Claim:
1. A light emitting device comprising: a light emitting element; and a light control member which has a shape of rotational symmetry with respect to the optical axis and controls light incident from the light emitting element thereby emitting, wherein the light control member comprises a cavity formed between the light emitting element, a light incident surface where light emitted from the light emitting element is inputted, and a light emitting surface where the light inputted through the light incident surface is outputted, and wherein the light incident surface and the light emitting surface respectively have convex portions proximate the optical axis and diffuse light proximate the optical axis, wherein an intersection point of the optical axis and a light emitting surface of the light emitting element is defined as a base point, a first angle formed by the optical axis and a line connecting the base point and a first optional point intersecting the light incident surface is defined as α