1982-09-28
1986-09-30
Arnold, Bruce Y.
350418, 350484, G02B 506, G02B 312
Patent
active
046144056
ABSTRACT:
A wide angle laser window for directing a coherent radiation beam through the skin of an aircraft to or from a distant point located at a varying azimuthal position with respect thereto is comprised of a fluid prismatic window including a first beam-transmissive window panel disposed aerodynamically with respect to the skin of the aircraft, a second beam-transmissive window panel disposed inwardly proximate the first in pivotable relationship therewith, a flexible seal securing the panels to define a fluid cell therebetween, and a beam-transmissive fluid charged to the cell; wherein the indices of refraction for each of the panel members and the fluid are matched to yield a variable angle prism having substantially uniform optical properties. A laser system incorporating a plurality of the aforesaid windows located circumferentially about an aircraft permits beam steering over a wide range of angles substantially enveloping the craft.
REFERENCES:
patent: 2836101 (1958-05-01), De Swart
patent: 3161718 (1964-12-01), De Luca
patent: 3212420 (1965-10-01), De la Cierva
patent: 3337287 (1967-08-01), Lessman
patent: 3389950 (1968-06-01), Harper
patent: 3514192 (1970-05-01), De la Cierva
patent: 3641354 (1972-02-01), De Ment
patent: 4289379 (1981-09-01), Michelet
Brandenberg Werner M.
Pistoresi Denis J.
Arnold Bruce Y.
Propp William
The Boeing Company
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