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. 05, 2026
Filed:
Oct. 27, 2022
Dr. Johannes Heidenhain Gmbh, Traunreut, DE;
Daniel Frese, Traunstein, DE;
Jannik Jens Rosenlehner-Emde, Obing, DE;
Stefan Weis, Traunwalchen, DE;
DR. JOHANNES HEIDENHAIN GMBH, Traunreut, DE;
Abstract
In an optical position measuring device for determining the position of two objects movable relative to each other along a measuring direction, a measuring standard includes a reflective measuring scale extending along the measuring direction and having scale regions with different reflectivities. A scanning unit arranged at a scanning distance relative to the measuring standard. Light source(s) and a detector arrangement including optoelectronic detector elements arranged periodically along the measuring direction are also provided. A signal processing unit is adapted to generate position signals relating to the relative position of the objects from the photocurrents generated by the detector elements, to determine a total photocurrent in a middle region and edge region(s) of the detector, and to determine the scanning distance from the photocurrent ratio of the total photocurrents formed in the middle region and edge region(s) of the detector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile