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:
Feb. 06, 1990
Filed:
Feb. 09, 1989
Applicant:
Inventors:
Oliver Wright, Paris, FR;
Sylvain Janssen, Neuilly-sur-Seine, FR;
Assignee:
Schlumberger Industries, S.A., Montrouge, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ; G01L / ;
U.S. Cl.
CPC ...
250227 ; 2502 / ; 73705 ;
Abstract
An optical sensor for measuring physical magnitudes, such as a differential pressure, is described. The pressure sensor comprises a deformable diaphragm (24) which separates two measurement chambers (26,28) where pressures P1 and P2 exist. An optical conductor (34) is attached to the diaphragm (24). A light source (40) allows a light beam to be radiated towards the conductor (34). An optoelectrical converter (42) performs a detection of the light energy (1) output from the light guide (34), and thus of the difference between both pressures (P1,P2).