Illumination – Plural light sources – Particular wavelength
Patent
1977-01-26
1977-12-20
Sebastian, Leland A.
Illumination
Plural light sources
Particular wavelength
340 25, B64F 120, G08G 500
Patent
active
040644243
ABSTRACT:
Generally speaking, according to the inventive concept, the lamp enclosure is made of an optically transparent material which allows the beacon to be observed by a pilot throughout the entire traffic pattern. The beacons are placed in pairs at opposite ends of a runway so that it becomes possible to dispense with the conventional runway lights presently used to delineate the runway. In order to fill in the dark zone which surrounds the convergence produced when a lens is used to intensify the brightness of the colored zones, the invention uses an apertured mirror positioned opposite the lens. This permits the pilot to see the beacons through all parts of a traffic pattern as well as in the intensified colored zone guidance region. Instead of using a single light source projecting through a color filter to form the color zones as is done in the present art, this invention uses two light sources such as incandescent lamps which project the color zones in slightly different directions which differ, by say, an angle of one degree. The two lamps are flashed on and off alternately producing a "scanning" action of the colored zone pattern.
REFERENCES:
patent: 1961116 (1934-05-01), Van Vloten
patent: 3377617 (1968-04-01), Projector
patent: 3771120 (1973-11-01), Bonazoli et al.
patent: 3821697 (1974-06-01), Brown
Oujevolk George B.
Sebastian Leland A.
LandOfFree
Visual glide path beacon system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Visual glide path beacon system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Visual glide path beacon system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-601548