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. 26, 2002
Filed:
Oct. 05, 2000
Applicant:
Inventors:
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 1/100 ;
U.S. Cl.
CPC ...
G01B 1/100 ;
Abstract
A device for detecting six components of the relative motion of two bodies during a primarily two-dimensional translatory basic motion is described. The device has a plate which is provided with a two-dimensional, optical grating, and which is equipped with a plurality of vertically arranged devices for distance measuring. A second element which is composed of an arrangement of two or three optical gratings, and a plane surface which is parallel to the gratings is included. The optical gratings permit a detection of the relative displacements in X- and Y- directions parallel to the lower plate via an evaluation of the variations in intensity of the reflected light.