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:
Apr. 27, 2010
Filed:
Jun. 19, 2008
Applicant:
Ulrich Benner, Trostberg, DE;
Inventor:
Ulrich Benner, Trostberg, DE;
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A scanning unit for an optical position-measuring device includes a semiconductor light source and at least one downstream reflector element that has a defined optical effect on the beams of rays emitted by the semiconductor light source. The optically active surface of the reflector element is arranged in subregions to be reflection-preventive such that no beams of rays are reflected back from the reflector element into the semiconductor light source.