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. 11, 1994
Filed:
Jun. 25, 1992
Applicant:
Inventor:
Philippe Grosso, Lannion, FR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01B / ;
U.S. Cl.
CPC ...
356 731 ; 356357 ;
Abstract
A device for measuring the diameter of an object that is generally cylindrical such as, for example, an optical fiber, without contact. This device includes a laser (4) capable of emitting a luminous beam, optical means (6, 8, 10) provided to form first and second luminous beams from the luminous beams emitted by the laser and to illuminate the object (2) with these first and second luminous beams, so as to obtain two luminous beams reflected by the object which interfere with one another, and means (CCD, 14) of photo-detection and analysis of the interference between the two reflected beams, capable of determining the diameter of the object from the interference fringes.