This paper presents an analysis of the para-elliptic reflector together with its possible applications when used as a searchlight mirror. The horizontal sections of a para-elliptic mirror are portions of ellipses and the vertical sections are parabolas. The mirror is so designed that each parabola lies in a vertical plane through the secondary focus of the horizontal ellipse which passes through the vertex of the mirror and each elliptical section lies in a plane parallel to that of the ellipse through the vertex of the mirror. A beam of light projected from such a reflector converges in the horizontal planes to a line common to the intersection of the vertical planes and then diverges as a spread beam horizontally with minimum spread vertically.
BENJAMIN GOLDBERG and NELS C. BENSON, "Analysis of Para-Elliptic Reflector," J. Opt. Soc. Am. 39, 497-497 (1949)
References are not available for this paper.
|Alert me when this paper is cited|
OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.