Accession Number : ADD004991

Title :   Wide Angle Laser Seeker.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Allen,Edwin M ; Fitzgerald,William C ; Melsted,Marino S

Report Date : 24 Jan 1978

Pagination or Media Count : 5

Abstract : A wide angle radiant energy detection appartus arranged as a catadioptric Cassegrainian telescope having a plane secondary mirror is disclosed which utilizes a correcting lens as a structural support for the secondary mirror to reduce losses caused by mirror support structure vignetting. Angular resolution at wide field angles is increased by lenses which reduce oblique spherical aberation, spherical aberation, and coma, and by the more uniform energy distribution across the image field caused by the lack of vignetting optical support structure. (Author)

Descriptors :   *Patents, *Laser tracking, *Homing devices, Focusing, Mirrors, Wide angles

Subject Categories : Lasers and Masers
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE