Title:
RECOGNITION/ANTI-COLLISION LIGHT FOR AIRCRAFT
Document Type and Number:
WIPO Patent Application WO2000027699
Kind Code:
A3
Abstract:
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.
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Inventors:
DEMARCO RALPH ANTHONY
DRAVES RAYMOND HENRY
KIELBON TIMOTHY SCOTT
KNIGHT TODD CHRISTOPHER
PATEL ANISH VIKRAM
STEPHENS MERLE KEITH
DRAVES RAYMOND HENRY
KIELBON TIMOTHY SCOTT
KNIGHT TODD CHRISTOPHER
PATEL ANISH VIKRAM
STEPHENS MERLE KEITH
Application Number:
PCT/US1999/026209
Publication Date:
October 05, 2000
Filing Date:
November 05, 1999
Export Citation:
Assignee:
GOODRICH CO B F (US)
International Classes:
B60Q1/26; B64D47/06; F21V7/00; F21V13/04; (IPC1-7): B64D47/06; B60Q1/26
Foreign References:
US5293304A | 1994-03-08 | |||
US3731082A | 1973-05-01 | |||
GB1182231A | 1970-02-25 |
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