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. 24, 1988
Filed:
Nov. 26, 1986
Werner Forkel, Stuttgart, DE;
Daimler-Benz Aktiengesellschaft, Stuttgart, DE;
Abstract
A fiber optic sensor for the detection of the position or movement of a component, for example the speed of rotation of a shaft, is described, which is particularly suitable for use in a coarse environment. The optical modulator of the sensor comprises a permanent magnet and a modulator part, the permanent magnet and/or the modulator part being mounted so as to be movable relative to a transmitting and receiving light guide. A change caused by a movement generator, for example the shaft, causes a change in the course of the field lines emanating from the permanent magnet which causes a corresponding movement of the modulator part, whereby a greater or lesser proportion of the light radiated out by the transmitting optical fiber is modulated by the modulator part and is transmitted into the receiving optical fiber. The corresponding modulation of the light according to the intensity, color or polarization is then utilized as a measure of the movement or position of the component, and appropriately analyzed.