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, 2012
Filed:
Jul. 16, 2009
Applicant:
Maarten J. Jansen, Casteren, NL;
Inventor:
Maarten J. Jansen, Casteren, NL;
Assignee:
Mitutoyo Corporation, Kawasaki-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An interferometer includes a light source, adapted to generate a coherent light beam, a detector adapted to analyze the phase difference of optical light beams, a location unit for locating an object to be measured, a first optical path from the light source to the object and a second optical path from the object to the detector. The first and the second optical path have a common section adjacent to the object. An optical polarization modulator has been arranged in the first path.