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. 03, 1992
Filed:
Dec. 14, 1990
Applicant:
Inventors:
Patrick D Pratt, Shoreview, MN (US);
Douglas B Pledger, Medford, WI (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250339 ; 250342 ; 250349 ;
Abstract
An infrared sensor for short range detection of aircraft wherein the sensor is designed to operate with the sun in the field of view yet still be able to track its target. The sensor operates on a spinning platform, wherein the spinning platform has precessional motion. The sensor has a first detector array for detecting the presence of the sun and other background clutter. The sensor further has a second detector array sensitive to radiation in a predetermined frequency band for tracking a specific target. The sensor has an objective lens to focus the radiation on the first and second detector arrays.