RECOGNITION/ANTI-COLLISION LIGHT FOR AIRCRAFT

WIPO Patent Application WO2000027699

A3

A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces (40, 42) which have respective focal points axially spaced apart from one another, and first and second annular lamps (34, 36) respectively disposed at the focal points. A cover (14) surrounds the reflector and lamps and includes a lens (20) for focusing the light along a plane perpendicular to the axis of the reflector, the lens including first and second Fresnel lens portions each including a convex lens and a prism lens, the convex lenses being disposed adjacent one another and transaxially aligned with the first and second lamps, respectively. A light detector detects light emitted from at least one of the lamps, a monitor circuit provides a fail signal when a characteristic of the light output of at least one of the lamps does not satisfy a specified criteria, and a control circuit first activates the first lamp and then the second lamp in response to receipt of the fail signal of the monitor circuit.

JPH01240338	AUXILIARY INDICATING LAMP
JPH01145247	LAMP DEVICE FOR AIR SPOILER

DEMARCO RALPH ANTHONY
DRAVES RAYMOND HENRY
KIELBON TIMOTHY SCOTT
KNIGHT TODD CHRISTOPHER
PATEL ANISH VIKRAM
STEPHENS MERLE KEITH

PCT/US1999/026209

October 05, 2000

November 05, 1999

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GOODRICH CO B F (US)

B60Q1/26; B64D47/06; F21V7/00; F21V13/04; (IPC1-7): B64D47/06; B60Q1/26

US5293304A	1994-03-08
US3731082A	1973-05-01
GB1182231A	1970-02-25

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