Patent ID: 9146019
Filing Date: 2015-09-29
Classification: F21S,F21V,G02B

Abstract:
1. A light guide lens adapted for guiding light emitted from a light emitting element, said light guide lens comprising: a base portion disposed on a light axis (L) and including a light incident surface adapted for passing ox the light emitted from light emitting element therethrough; and a light guide portion surrounding the light axis (L) and disposed on the periphery of said base portion, said light guide portion including an inner peripheral edge connected to said base portion, an outer peripheral edge opposite to said inner peripheral edge and disposed distally from said base portion, and at least one light control unit connecting said inner peripheral edge and said outer peripheral edge, said light control unit having a first light guide section and a second light guide section adjacent to each other, said first light guide section including a first reflecting surface that faces toward the light emitting element and that has a stepped shape, and a first light exiting surface that faces away from the light emitting element and that has a smooth face, said first reflecting surface and said first light exiting surface extending from said inner peripheral edge toward said outer peripheral edge, said second light guide section including a second reflecting surface that faces the light emitting element, a third reflecting surface that faces away from the light emitting element, and a second-light exiting surface that connects an edge of said second reflecting surface and an edge of said third reflecting surface, and that is disposed on said outer peripheral edge, said second reflecting surface and said third reflecting surface each having a smooth face and extending from said inner peripheral edge toward said outer peripheral edge; wherein a portion of the light emitted from the light emitting element enters said first light guide section through said light incident surface and is reflected subsequently by said first reflecting surface as to exit said first light exiting surface, and wherein another portion of the light emitted from the light emitting element enters said second light guide section through said light incident surface and is reflected multiple times by said second reflecting surface and said third reflecting surface as to exit said second light exiting surface.