Method and apparatus for directing light from a light source

Details Method and apparatus for directing light from a light source Method and apparatus for directing light from a light source

2007-09-18

2007-09-18

Tso, Laura (Department: 2875)

Illumination

Light fiber, rod, or pipe

With static structure

C362S580000, C362S304000, C385S146000

Reexamination Certificate

active

11580334

ABSTRACT:
A light guide is configured to direct light from a light source. The light guide has an outer guide member and an inner guide member located in the outer guide member. A light passage is defined through the light guide between the inner and outer guide members. When a first end of the light guide is positioned adjacent a light source, light is permitted to pass from the light source through only the light passage in the light guide. The configuration of the light guide reduces passage of light off-angle to the length of the light passage through the guide, such that light is directed substantially parallel to the light passage. The light guide is thus effective in eliminating light dispersion and associated light banding and in focusing light upon a particular object or area.

REFERENCES:
patent: 5709456 (1998-01-01), Smith et al.
patent: 6481882 (2002-11-01), Pojar
patent: 6923549 (2005-08-01), Hoy
patent: 7014341 (2006-03-01), King et al.
patent: 7125147 (2006-10-01), Waring
patent: 2004/0165388 (2004-08-01), Shoji

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