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. 07, 2006
Filed:
Oct. 25, 2000
Sebastian Tondorf, Waging, DE;
Jürgen Thiel, Bonn, DE;
Jan Braasch, Trostberg, DE;
Volker Seyfried, Nussloch, DE;
Wolfgang Holzapfel, Obing, DE;
Sebastian Tondorf, Waging, DE;
Jürgen Thiel, Bonn, DE;
Jan Braasch, Trostberg, DE;
Volker Seyfried, Nussloch, DE;
Wolfgang Holzapfel, Obing, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
An angle measuring system for the contactless determination of an angle between a first object and a second object which can be moved with respect to each other, the angle measuring system including a first component having a light source and connected to a first object and a second component having a photodetector and connected to a second object. A grating is connected either to the first component or the second component, the grating having a combined amplitude-phase grating.