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:
Jul. 13, 1993
Filed:
Nov. 29, 1991
Applicant:
Inventors:
Michael L Henning, Shepton Mallet, GB;
Philip J Nash, Sherborne, GB;
Assignee:
GEC-Marconi Limited, Stanmore, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
25022723 ; 250226 ;
Abstract
An optical sensing system (e.g. hydrophone) includes a plurality of laser light sources for producing light signals of different frequencies which are combined by a Bragg cell and launched into a single optical fibre leading to an optical sensor array arrangement. This sensor array arrangement includes a plurality of optical sensors separated by redirecting means for redirecting light signals along an optical fibre in time displaced relationship to an optical detector.