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:
Jul. 26, 1994
Filed:
Apr. 20, 1993
Applicant:
Inventors:
Dieter Michel, Traunstein, DE;
Erwin Spanner, Traunstein, DE;
Assignee:
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356351 ; 356354 ; 356356 ; 2502 / ;
Abstract
A polarizing optical arrangement wherein a linearly polarized signal beam cluster is generated. The signal beam cluster is created from interfering partial beam clusters and is linearly polarized. The azimuth of oscillation of the linearly polarized signal beam cluster is dependent on the mutual phase relationship of the aforementioned partial beam clusters. A splitter grating splits the linearly polarized signal beam cluster into partial beam clusters that are analyzed by analyzers, detected by photoelectric transducers and phase-shifted electrically from one another.