Patent ID: 7887197

Claim:
A light source unit comprising: a light emitting element; a substrate on which the light emitting element is disposed; a sealing portion which transmits light of the light emitting element; and a collimator lens for forming light emitted from the sealing portion into a bundle of parallel rays of light for emission therefrom, wherein the sealing portion has two or more convexly curved surfaces which project in a direction in which light is emitted therefrom, wherein the collimator lens has an inverted truncated hexagonal pyramid shape, and wherein a light emitting surface of the collimator lens comprises a flat surface portion which is formed at a center thereof in such a manner as to be parallel to a bottom surface of the collimator lens, and an inclined surface formed around a perimeter of the flat surface portion, whereby the collimator lens comprises an inverted truncated hexagonal cone-shaped top portion which is recessed at a center thereof.