Recognition/anti-collision light for aircraft

Details Recognition/anti-collision light for aircraft Recognition/anti-collision light for aircraft

2006-01-24

2006-01-24

Swarthout, Brent A. (Department: 2636)

Communications: electrical

Aircraft alarm or indicating systems

Aircraft beacons

C362S470000, C362S548000

Reexamination Certificate

active

06989768

ABSTRACT:
A recognition light includes a reflector having an axis and first and second annular semi-parabolic reflective surfaces which have respective focal points axially spaced apart from one another, and first and second annular lamps respectively disposed at the focal points. A cover surrounds the reflector and lamps and includes a lens 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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Anti-Collision Strobe Light System High Intensity Red >400 ECP, Sep. 9, 1998.

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