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:
Nov. 28, 1989
Filed:
Apr. 25, 1988
Applicant:
Inventor:
Warren B Nicholson, Worthington, OH (US);
Assignee:
Medex, Inc., Hilliard, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128667 ; 128675 ; 128736 ; 128748 ;
Abstract
An interference edge filter is mounted on the end of an optical fiber to provide a sensor for pressure or temperature. The filter is formed such that the transition slope of the filter curve will move to the left or right depending upon the changes in the parameter being monitored. The shift in the position of the slope of the edge filter curve is detected by passing the reflected light through an interference bandpass filter having an edge slope intersecting the transition slope and measuring the intensity of the light passing the bandpass filter.