Apparatus and method of guiding and shaping light from light...

Details Apparatus and method of guiding and shaping light from light... Apparatus and method of guiding and shaping light from light...

2006-06-06

2006-06-06

Epps, Georgia (Department: 2873)

Illumination

Supported by vehicle structure

Marine

C362S511000, C362S551000, C362S555000, C359S641000

Reexamination Certificate

active

07055995

ABSTRACT:
An apparatus and method for controlling light from a non-rectangular light source. The apparatus and method relate to using a light guide of a single piece of light-transmissive material having a plurality of external surfaces. One external surface is shaped to collect and substantially collimate light from the light source into the interior of the light guide. At least one external surface is shaped to internally control and direct light such that it issues from the light guide in a substantially rectangular pattern and with substantially total internal reflection. The light guide can be used to create a single controlled beam pattern. In another aspect, one light guide could be adapted to issue two controlled beam patterns. Still further, two light guides could be mounted in a common housing and used to generate two beam patterns. One exemplary application of two beam patterns is a bow light for marine vessels. One pattern would issue a red pattern; the other a blue-green pattern; each angularly offset from the other in a horizontal plane, such as dictated by marine regulations.

REFERENCES:
patent: 5905595 (1999-05-01), Minami
patent: 6111705 (2000-08-01), Rohlfing
patent: 6270244 (2001-08-01), Naum

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