Patent ID: 8057081

Claim:
A light guide for a vehicular lamp assembly having a light source operable to generate light, and a light coupler in operative communication with the light source to receive light therefrom and distribute the light in a first direction, the light guide comprising: an elongated body with first and second faces each at a respective longitudinal end thereof, and opposing light-emitting and light-guiding surfaces each extending between said first and second faces on a respective side of said body, said first face configured to communicate with the light coupler and receive light therefrom, said body configured to transmit light generated by the light source along the longitudinal expanse of said body, said light-guiding surface including an array of longitudinally-spaced optical grooves each configured to refract light generated by the light source in a second direction, and said light-emitting surface configured to emanate the refracted light; wherein said array of optical grooves includes first and second optical grooves, said first optical groove having a first depth and said second optical groove having a second depth larger than said first depth; and wherein said first optical groove has a first refracting surface oriented with respect to said light-emitting surface at a first angle, and said second optical groove has a second refracting surface oriented with respect to said light-emitting surface at a second angle different from said first angle.