Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1977-01-13
1978-12-26
Corbin, John K.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
B64D 4508
Patent
active
041313666
ABSTRACT:
A device for indicating the direction to a remote object comprises at least one disc-like unit consisting of a plurality of elongated light guides, arranged in parallel, mechanically interconnected but optically insulated from each other. The end surfaces of the light guides located in one end surface of the unit face the object and their opposite end surfaces are facing the observer who sees a light area, or spot, composed by light passing through those guides which are right before his eyes. When the light spot is in level with his line of sight to the object the longitudinal axes of the light guides indicate the direction to the object. In a preferred embodiment two units are used one of which is rigidly mounted in a vehicle whereas the other one is pivotable around an axis perpendicular to the longitudinal axes and to the end surfaces of the light guides. The pivoting movement is controlled by one or more variables representative of the spatial situation of the vehicle.
REFERENCES:
patent: 1687119 (1928-10-01), Benson et al.
patent: 3031351 (1962-04-01), McIlvaine
patent: 3361912 (1968-01-01), Lundberg
patent: 3380817 (1968-04-01), Gardner
Corbin John K.
Rosenberger R. A.
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