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. 23, 1993
Filed:
Oct. 28, 1991
Applicant:
Inventors:
Winfried Lieber, Krailling, DE;
Gervin Ruegenberg, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
25022724 ; 356 731 ;
Abstract
A method and apparatus for measuring the attenuation of optical medium utilizing a transmitter and a receiver arranged on each side of the medium. In the method, two-measurement series are acquired in succession and the reception signals thereof are derived both from the series using reception signals from both the right and left-hand transmitters on a first receiver, while the second receiver is uncoupled. Then, a second series is performed with the second receiver coupled in and the first receiver uncoupled.