Title: Catoptric lens arrangement

Abstract: Improved catoptric lens arrangements to form beams from the energy emitted by extended sources of wave propagated energy are disclosed. All embodiments utilize at least a pair of mirrors disposed along a common axis, one of such mirrors being convex and the other concave, the generatrices of the reflecting surfaces of such mirrors being curves with noncoincident focal points, such generatrices being always divergent. At least one source of wave propagated energy is disposed between such reflecting surfaces so that all of the wave propagated energy from such a source is reflected back and forth between the mirrors in passing to an exit aperture defined by the mirrors.

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Inventors: Merrow, Earle F. (Billerica, MA, US)
Rambauske, Werner R. (Carlisle, MA, US)
McFarland, Philip J. (Lynnfield, MA, US)

Application Number: 542473
Filing Date: 1975-01-20
Publication_date: 1976-03-02
Assignee: Raytheon Company (Lexington, MA)
Primary Class(es): 359/859 362/217, 362/302, 362/346
Other Classes:
US Patent Ref:

525571	Sep, 1894	Ainslie	350/296.
3492474	Jan, 1970	Yamaguchi et al.	350/293.
3745325	Jul, 1973	Harvey	350/299.

Other Refs: 497,181725,509

Aug, 1950	BE
Mar, 1955	UK

Primary Examiner: Smith, Alfred E.
Assistant Examiner: Evans, F. L.
Attorney: McFarland; Philip J., Pannone; Joseph D.