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. 05, 1985
Filed:
May. 06, 1982
Applicant:
Inventors:
Douglas C Reid, Rugby, GB;
William J Stewart, Fritwell, GB;
Assignee:
Plessey Overseas Limited, Ilford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 731 ; 356128 ;
Abstract
Optical apparatus for determining for example by display on an oscilloscope the refractive index profile across an optical fibre including an ellipsoidal reflector and a scanning system for a laser beam directed towards one focus of the ellipsoidal reflector at which point the fibre to be examined is placed and including a detector which is relatively small in size situated at the other focus of the ellipsoidal reflector.