Accession Number : ADD001497

Title :   Zoom Lens System Having Four Movable Members.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Betensky,Ellis I ; Schwarz,Alfred

Report Date : 08 Oct 1974

Pagination or Media Count : 6

Abstract : The patent relates generally to zoom lens systems and more particularly it relates to a zoom-type of lens assembly having a variable focal length over a range of substantially 6 to 18 inches. It is an object of the present invention to provide a high quality lens suitable for aircraft reconnaissance applications.

Descriptors :   *Zoom lenses, *Patents, Aerial photography

Subject Categories : Cartography and Aerial Photography
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE