Accession Number : ADD009306
Title : Symmetrical 1:1 Photographic Objective Lens.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Personal Author(s) : Abel,Irving R
Report Date : 16 Mar 1982
Pagination or Media Count : 4
Abstract : In an objective lens system of the Double Gauss type, negative lens elements are symmetrically disposed on both sides adjacent the stop, each negative element being a cemented doublet comprising a double convex negative and a positive lens element. A cemented doublet positive lens component is next positioned at the outside of each of the negative elements and a single positive lens is positioned at the outside of each of the inner positive lens components.
Descriptors : *Patents, *Photographic equipment, *Optical lenses, *Symmetry, Convex bodies, Photographic film, Image processing, Cathode ray tube screens
Subject Categories : Photography
Distribution Statement : APPROVED FOR PUBLIC RELEASE