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:
Feb. 10, 1987
Filed:
Mar. 24, 1982
Rochelle Prescott, Arlington, MA (US);
Dennis C Leiner, North Andover, MA (US);
Dyonics, Inc., Andover, MA (US);
Abstract
An optical system and method is disclosed for substantially correcting an image transmitted through at least one gradient index lens for chromatic aberration by means of a homogeneous lens affixed thereto. In preferred embodiments, at least one of the gradient index lenses is a relay lens. The length of the relay lens is varied about an integral number of half periods and the homogeneous lens has a positive or negative curvature, depending upon the nature of the correction required. A method of determining the curvature of the homogeneous lens and the length of the relay lens for the desired degree of correction is also claimed.