Patent ID: 8508689
Filing Date: 2013-08-13
Classification: F21V,F21Y,G02B,G02F,H01L

Abstract:
1. A light-emitting device, comprising: a light-emitting element; and a lens section covering over the light-emitting element, wherein the lens section includes an entrance surface on which light from the light-emitting element is incident; an exit surface from which the light incident on the entrance surface is emitted; an optical axis extending so as to penetrate through the entrance and exit surfaces; a concave section formed in an area of the exit surface, which contains the optical axis; and first and second flat sections formed so as to face each other across the optical axis; part of the exit surface between the first flat section and the concave section defines a first upwardly-protruding curved surface and part of the exit surface between the second flat section and the concave section defines a second upwardly-protruding curved surface; the optical axis is coincident with a reference optical axis of the light-emitting element; and said first upwardly-protruding curved surface extends from the first flat section to the concave section and said second upwardly-protruding curved surface extends from the second flat section to the concave section.