Abstract: A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.

Abstract: A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.

Abstract: A folded circularly symmetric illumination optic comprising a first light transfer mode having a first central refractive surface and a second central refractive surface, wherein one of the first and second central refractive surfaces has at least one peened feature; a second light transfer mode having a first refractive surface, a first TIR surface, a second TIR surface and a second refractive surface; a third light transfer mode having a first refractive surface, a first TIR surface and a second refractive surface, wherein the first TIR surface has at least one peening feature, and wherein the second refractive surface is conical; wherein the first TIR surface and second refractive surface of the second light transfer mode is coincident at least one point, wherein the second refractive surface of the third light transfer mode is coincident with the first TIR surface and second refractive surface of the second light transfer mode.

Abstract: A folded circularly symmetric illumination optic comprising a first light transfer mode having a first central refractive surface and a second central refractive surface, wherein one of the first and second central refractive surfaces has at least one peened feature; a second light transfer mode having a first refractive surface, a first TIR surface, a second TIR surface and a second refractive surface; a third light transfer mode having a first refractive surface, a first TIR surface and a second refractive surface, wherein the first TIR surface has at least one peening feature, and wherein the second refractive surface is conical; wherein the first TIR surface and second refractive surface of the second light transfer mode is coincident at least one point, wherein the second refractive surface of the third light transfer mode is coincident with the first TIR surface and second refractive surface of the second light transfer mode.