Patent ID: 7976201
Filing Date: 2011-07-12
Classification: F21V,F21W,F21Y,G02B

Abstract:
1. A two-side illuminating lens body, comprising: a base having a receiving slot and a downward opening thereof to define a center light axis, wherein said base is for receiving a lighting device through said receiving slot and said downward opening; two symmetrical non-spherical protrusions formed on two sides of a center light axis on a top surface of the base; a concave arc formed in said receiving slot as an incident side of light ray emitting from said lighting device; a concave curved surface extended between said two non-spherical protrusions; and two symmetrical laterals extended from outer edges of said non-spherical protrusions respectively, wherein a thickness of said concave curved surface gradually reduces outwardly from said center light axis, wherein a thickness of each of said non-spherical protrusions gradually reduces outwardly from a highest point of said corresponding spherical protrusion with respect to said base, so as to form a continuous wave cross sectional shape of said two-side illuminating lens body, so that that when light ray emitted from said lighting device reaches said two-side illuminating lens body, said light ray is projected by said concave arc toward said concave curved surface, said non-spherical protrusions, and said two laterals to enlarge refracting angle of said light ray to form a butterfly-like light pattern having a large area of high density light.