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. 22, 1994
Filed:
Jul. 31, 1992
Applicant:
Inventor:
William G McKinley, Littleton, MA (US);
Assignee:
Litton Systems, Inc., Lexington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
359861 ; 359401 ;
Abstract
An optical system and method for rotating an image of an object is disclosed. The device consists of a plurality of optical surfaces for either reflecting or refracting the light along an optical path through the device. The optical surfaces divide the optical path into optical path segments which intersect at predetermined angles. These angles are selected to minimize polarization of the output light. The optical path segments lie in more than one plane.