Patent ID: 9140827
Filing Date: 2015-09-22
Classification: F21V,F21Y,G02B,G02F

Abstract:
1. A lens for diverging light from an LED (light emitting diode) light source comprising: a light incident face configured for receiving the light from the LED light source; a light exit face opposite to the light incident face, and the light exit face being a convex face; a connecting face extending between the light incident face and the light exit face, the connecting face being radially symmetrical relative to the optical axis of the lens; and an annular mounting face interconnecting the connecting face and the light incident face, wherein the light incident face is located at a center of the mounting face and recessed inwardly from an inner edge of the mounting face toward the light exit face of the lens; wherein the connecting face comprises a plurality of inclined reflecting planes located at a circumferential periphery of the lens and extending downwardly and inwardly from a position near to an outer edge of the light exit face toward the light incident face, and the inclined reflecting planes of the connecting face are positioned around an optical axis of the lens; wherein each inclined reflecting plane of the connecting face extends from a position near to the outer edge of the light exit face toward an outer edge of the mounting face; wherein the connecting face further comprises a circumferential surface between the inclined reflecting planes and the light exit face, and the circumferential surface extends downwardly from the outer edge of the light exit face toward the outer edge of the mounting face; and wherein each inclined reflecting plane and the circumferential surface intersect at an arc having a peak near the light exit face.