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:
Mar. 02, 1982
Filed:
Sep. 27, 1979
Applicant:
Inventors:
Peter Froscher, Berlin, DE;
Joachim Schulze, Berlin, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 731 ; 250578 ;
Abstract
In a method and apparatus for coupling a test piece to the transmitter and the receiver of an apparatus for measuring the attenuation of light waveguides, either a large area light emitter is inserted into the measuring path on the input side of the test piece, or a large area photo receiver is inserted on the output side of the test piece. The insertion of the large area photo receiver can be accomplished by means of a semitransparent or hinged mirror.