Patent ID: 8662713

Claim:
A lighting apparatus, comprising: a light source including a substrate and at least one light emitting diode (LED) placed on the substrate, a lens on the light source and spaced, by a gap, from the substrate of the light source, wherein the lens includes a light emitting surface and a bottom surface, wherein the light emitting surface comprises a center portion, a middle portion and an edge portion, wherein the center portion has a convex shape, the edge portion has a convex shape, and the middle portion is disposed between the center portion and the edge portion and has a predetermined inclination, wherein at least one of a top surface of the center portion and a lateral surface of the edge portion has a curved line, wherein the center portion is overlying a first section of the bottom surface, and the middle portion is overlying a second section of the bottom surface, wherein a thickness of the lens from the first section of the bottom surface to the top surface of the center portion is greater than a thickness of the lens from the second section of the bottom surface to the top surface of the middle portion, wherein a spatial distribution of light emitted from the light emitting surface of the lens has a conical shape, wherein the bottom surface is flat; and a gap defining member disposed between the substrate of the light source and the lens to define said gap, wherein the gap defining member includes a flat portion on an outer circumference thereof, and wherein the gap defining member includes: an opening in which the at least one LED is disposed, and an electrode-through portion at which the gap defining member has a reduced thickness and which extends from the opening to the flat portion on the outer circumference of the gap defining member.