Patent ID: 7370994

Claim:
A collimating lens made of a light transmissive material, comprising: a base, a body extending outwards from said base, and a top extending outwards from said body, said base having a first end face, said top having a flat second end face, said second end face having an area greater than said first end face, a periphery of said body configuring a first wall section, a periphery of said top configuring a second wall section, an outer surface of said first wall section and an outer surface of said second wall section defining a contained angle {acute over (α)}, β between the outer surfaces of the first and the second wall sections which is less than 180°, said base having a third wall section and fourth section, said third wall section being formed of the periphery of said base, said fourth wall section extending perpendicular from said third wall section and connected to said first wall section; wherein said collimating lens further comprises an LED accommodation hole, which is a round hole having an opening at the center of the first end face for accommodating an LED lamp, and a convex surface configuring an inner top wall of said LED accommodation hole; wherein the angle {acute over (α)}, β results in light L produced by the LED lamp following a path which passes over the first wall section and is refracted by the second end face to the second wall section where the light L is refracted out through the second wall section.