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:
Aug. 06, 1991
Filed:
Aug. 24, 1989
Gerhard Martens, Henstedt Ulzburg, DE;
Jurgen Kordts, Norderstedt, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention relates to an optical sensor arrangement having a light emitting arrangement (2), which feeds a first emission light beam into a first emission optical waveguide (3) and a second emission light beam into a second emission optical waveguide, having a polarizer (5), which is coupled with the two emission optical waveguides and generates from the first and second emission light beam a respective linearly polarized light beam, and having an optical sensor (1), which alters the state of polarization of a supplied polarized light beam as a function of a physical quantity acting on the sensor and which supplies a sensor light beam formed from a polarized light beam. Behind the optical sensor (1) there is disposed an analyzer (7), which separates each sensor light beam into two linearly polarized reception light beams, one of which is fed to a light receiving arrangement (12) via a first reception optical waveguide (9) and the other via a second reception optical waveguide (11). From the reception light beams, the light receiving arrangement forms electrical signals, from which an evaluation circuit ( 13) determines the physical quantity.