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:
Oct. 16, 1979
Filed:
Apr. 17, 1978
Applicant:
Inventors:
Rene Gerard, Paris, FR;
Michel Lacombat, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; H01L / ;
U.S. Cl.
CPC ...
356401 ; 356150 ; 356400 ;
Abstract
The invention relates to the positioning of an object comprising at least two fixed reference marks in an optical projection system. The system according to the invention comprises two projector arms illuminating two regions of the surface of the object through two marks, which form a reference system, having a variable inter-axis interval, display means enabling coincidence between the reference marks of the object and the reference system to be established.