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1. (WO1999009349) BIREFLECTIVE LENS ELEMENT

Pub. No.:    WO/1999/009349    International Application No.:    PCT/CA1998/000772
Publication Date: Fri Feb 26 00:59:59 CET 1999 International Filing Date: Thu Aug 13 01:59:59 CEST 1998
IPC: B60Q 1/30
F21S 8/10
F21V 5/00
F21V 7/00
F21V 8/00
F21V 13/04
G02B 3/08
G02B 27/00
Applicants: DECOMA INTERNATIONAL INC.
BREAULT RESEARCH ORGANIZATION, INC.
Inventors: JENKINS, David
PAGANO, Robert
COTE, Marie
GRIFFIN, Joseph, A.
Title: BIREFLECTIVE LENS ELEMENT
Abstract:
A bireflective lens element (10) comprising a light input surface (12) and a direct transmitting area (16) communicating with the light input surface (12). A light source (30) is disposed adjacent to the light input surface (12) for projecting light into the lens element (10) to create a light emitting-assembly. A first portion of input light is directed through the lens elements (10) in a first predetermined pattern. A primary (40) and a secondary reflecting area (16) is between the light input surface (12) and an illumination surface (20) surrounding the direct light transmitting area (16). A second portion of input light is redirected through the lens element (10) to the illumination surface (20) in a second predetermined pattern. Specifically, the secondary reflective area (18) has a plurality of extracting facets (42) extending inwardly into the secondary reflective area (18) for intercepting light from the primary reflective area (14). The first predetermined pattern combines with the second predetermined pattern to output light from the illumination surface (20) in a substantially uniform pattern covering the broad area of the lens element (10).