Recognition/anti-collision light for aircraft
First Claim
1. A recognition light comprising:
- a spool-shaped reflector having an axis, a waist, 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 disposed around the waist of the spool-shaped reflector at the focal points of the first and second annular semi-parabolic reflective surfaces, respectively.
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Accused Products
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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Citations
11 Claims
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1. A recognition light comprising:
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a spool-shaped reflector having an axis, a waist, 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 disposed around the waist of the spool-shaped reflector at the focal points of the first and second annular semi-parabolic reflective surfaces, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification