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. 20, 1979
Filed:
Apr. 17, 1978
Applicant:
Inventors:
Michel Lacombat, Paris, FR;
Rene Gerard, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 56 ; 355 53 ;
Abstract
The system according to the invention comprises means for displacing the lens and the object enabling magnification and focusing to be adjusted in dependence upon the lens used and co-operating with servocontrol means for the position of the lens which provide for automatic focusing while keeping magnification constant.