Accession Number : ADD004440

Title :   Catoptric Lens Arrangement.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Scholten,James R

Report Date : 27 Sep 1977

Pagination or Media Count : 7

Abstract : A family of catoptric lens arrangements is provided for focusing a maximum amount of light from an omnidirectional source into a parallel or conical beam. A rear spherical-curvature reflector is inserted into a conventional forward spherical pulse rear parabolic reflector arrangement, with its center of curvature and the light source both at the focal point of the parabolic reflector. In addition, a forward collimating lens is substituted for the central portion of the forward reflector. The theoretical 100% efficiency achieved by this arrangement is independent of the diameters of the forward and rear reflectors provided, of course, that the positions and curvatures are suitably compensated. (Author)

Descriptors :   *Patents, *Optical lenses, *Focusing, Optical equipment, Beams(Radiation), Light

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE