Patent ID: 7234837
Filing Date: 2007-06-26
Classification: F21V,F21Y,G02B,G03B,H01L,H04N

Abstract:
1. A light emitting device comprising: at least one light emitting element which has a light emission portion which emits diffused light; at least one optical element upon which a concave portion is formed in which the diffused light which has been emitted from the light emitting element is incident, and which optical element converts the diffused light into approximately parallel light and emits the approximately parallel light thereof to an exterior of the optical element; and a holder portion which has one side surface, an opposite side surface, and at least one through hole which extends between the one and the opposite side surfaces, for holding the light emitting element and the optical element, the through hole being circular in cross section; wherein the optical element is inserted into said at least one through hole from a side of the one side surface of the holder portion, and is fixed therein, and the light emitting element is inserted into the through hole to which the optical element is fixed from a side of the opposite side surface of the holder portion, and is fixed therein; and wherein the optical element has a first convex portion which is formed to protrude from one end of the optical element for engaging the through hole, the first convex portion being a circular cylinder, the concave portion being formed in the first convex portion in the opposite direction to the direction in which the first convex portion protrudes, and the light emitting element has a second convex portion which engages the concave portion.