Patent ID: 6679621
Filing Date: 2004-01-20
Classification: F21V,F21Y,G02B,H01L

Abstract:
A lens comprising:a bottom surface; a reflecting surface; a first refracting surface obliquely angled with respect to a central axis of the lens; and a second refracting surface extending as a smooth curve from the bottom surface to the first refracting surface; wherein light entering the lens through the bottom surface and directly incident on the reflecting surface is reflected from the reflecting surface to the first refracting surface and refracted by the first refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens, and wherein light entering the lens through the bottom surface and directly incident on the second refracting surface is refracted by the second refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens.