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:
Jan. 08, 1985
Filed:
Nov. 30, 1981
Asea Aktiebolag, Vaster.ang.s, SE;
Abstract
The present invention relates to an optical measuring device for measuring physical quantities, comprising a measuring transducer and an evaluating electronic unit, interconnected by a light-transmitting system and photo-optic devices for coupling in light from a light source to the system, and for coupling out light from the system to photo-detector devices in the electronic unit. The measuring device comprises a first element for polarizing the light from the light source and a second element for polarizing the light to the photo-detector devices, the difference in the direction of polarization between the two polarizing elements being chosen so that light reflections in the system in and adjacent to the evaluating electronic unit are substantially blocked from the photo-detector devices by the second polarizing element.