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:
May. 25, 2004
Filed:
Jul. 19, 2002
Applicant:
Inventors:
Assignee:
OTM Technologies Ltd., Herzelia, IL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P 3/36 ; G01B 1/100 ; G01B 9/02 ; G09G 5/08 ;
U.S. Cl.
CPC ...
G01P 3/36 ; G01B 1/100 ; G01B 9/02 ; G09G 5/08 ;
Abstract
A method for determining the relative motion of a surface with respect to a measurement device including placing a partially transmitting object, which is part of the measuring device, adjacent to the surface; illuminating the surface with incident illumination, which does not constitute an interference pattern, such that the illumination is reflected from portions of the surface, wherein at least part of at least one of the incident and reflected illumination passes through the object; detecting the illumination reflected from the surface, and generating a detected signal; and determining the relative motion of the surface parallel to the surface, from the detected signal.