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:
Apr. 06, 1993
Filed:
Dec. 03, 1991
Applicant:
Inventors:
Jean-Marc Rouchon, Orsay, FR;
Jean-Louis Ricci, Paris, FR;
Assignee:
Thomson-CSF, Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
250334 ; 2502521 ;
Abstract
A self-check electronic system for infra-red observation includes a hood having a first port transparent to infra-red radiation and a second port which is reflected through infra-red radiation and the hood can be rotated so that the second port is perpendicular to an infra-red detector optical sighting line so that a self-checking operation determining whether the optical system is aligned may be performed.