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:
Jun. 26, 2007
Filed:
Aug. 27, 2004
Elmar Mayer, Nussdorf, DE;
Johann Oberhauser, Vachendorf, DE;
Elmar Mayer, Nussdorf, DE;
Johann Oberhauser, Vachendorf, DE;
Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
A device for regulating a light source of a position-measuring unit includes: a measuring standard device that is movable relative to the light source; and a plurality of photodetectors, the photocurrent of at least one of the photodetectors usable as a basis for forming an actual value. The photodetectors are arranged such that light modulated by at least a partial number of the photodetectors of the measuring standard device is convertible into position-dependent photocurrents. In addition, the position-measuring unit includes a device for generating a setpoint value, and a comparator, by which a comparison between the actual value and the setpoint value may be made. By the generation device, the setpoint value is able to be generated based on the position-dependent photocurrents. A method is for performing such a regulation.