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. 09, 2021
Filed:
Jul. 30, 2018
Applicant:
Dr. Johannes Heidenhain Gmbh, Traunreut, DE;
Inventors:
Assignee:
DR. JOHANNES HEIDENHAIN GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/38 (2006.01); G01D 5/347 (2006.01); G02B 1/115 (2015.01); G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
G01D 5/38 (2013.01); G01D 5/34715 (2013.01); G02B 1/115 (2013.01); G02B 5/1871 (2013.01);
Abstract
A scanning reticle for an optical position measuring device includes a substrate having an upper surface, operating in transmission, and having different functional regions. The upper surface includes at least one region having a grating made up of gaps and ribs, the ribs being formed in the substrate. The upper surface includes an antireflection layer, which is discontinuous in the region of the gaps.