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. 22, 1992
Applicant:
Inventors:
Christian Pepin, Gif sur Yvette, FR;
Jean-Louis Bourgain, Issy les Moulineaux, FR;
Assignee:
Thomson-CSF, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
2503381 ; 2502521 ; 250330 ; 3561245 ;
Abstract
An imaging system is provided with integrated measurement of wear in at least one of the system's optical elements working in the transmission mode, in a given spectral band. The system includes a combination of optical elements and an imaging detector on which there is projected the image of an observed scene by means of the optical elements which produces a video signal of the observed scene. An alarm is provided to signal the existence of an optical element having a degree of wear which exceeds a critical value.