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. 12, 2002
Filed:
Feb. 01, 2000
Applicant:
Inventors:
Chungte W. Chen, Irvine, CA (US);
Stephen C. Fry, Hermosa Beach, CA (US);
J. Steve Anderson, Santa Monica, CA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 1/318 ; G02B 2/722 ; G02B 1/306 ; G02B 7/02 ;
U.S. Cl.
CPC ...
G02B 1/318 ; G02B 2/722 ; G02B 1/306 ; G02B 7/02 ;
Abstract
An optical system includes a window, an optical corrector formed of a curved piece of a transparent material having a front surface and a back surface, and a sensor system with a sensor positioned such that the optical corrector is between the window and the sensor. At least one of the front surface and the back surface of the optical corrector is a segment of a convex aspheric curve rotated about a center, otherwise known as a torus.