The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1979
Filed:
Mar. 03, 1977
Paul J Heckman, Jr, Rancho Santa Fe, CA (US);
Peter D McCardell, San Diego, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An optical system, to be used with an illuminating source, maps objects lted in an underwater environment. A first optical means is adapted to receive light from the illuminating source for transmitting the illumination to the object area to be mapped. A second optical means comprises an input means, adapted to receive reflected light from the illuminated object area, or plane; and an output means for conformally transforming images of all objects in the object plane to an image plane, located externally to the second optical means. A conformal transformation at a point is one which preserves angles between every pair of curves through the point. The optical system further comprises means located between the second optical means and the image plane for filtering or masking light propagating between the two, to thereby reduce backscatter.