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. 08, 1977
Filed:
Jan. 19, 1976
Applicant:
Inventors:
Thaddeus Hawkes, Paris, FR;
Jean-Claude Reymond, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 / ; 350 / ;
Abstract
A coupler for coupling in the same manner any one of a plurality of optical signal transmission lines to all of the other transmission lines. The coupler comprises at least three elongated frusto-conical shaped arms of transparent material coupled together by their minor bases through a connecting medium and connected by their major bases to end faces of optical transmission lines respectively. The base diameters and the axial length of these arms are determined such that each minor base has a hemispherical radiation pattern given the numerical aperture of the associated transmission line.