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:
Dec. 24, 1991
Filed:
Nov. 14, 1989
Applicant:
Inventor:
John W Hicks, Northboro, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385116 ; 385126 ;
Abstract
A multi-fiber for use in an endoscope having a plurality of fiber optic bundles. Each bundle comprises cores A, B, C and D, each core having a different index of refraction. The index difference between cores is at least 0.02 to produce mismatch in the propagation constants in the cores and to substantially reduce crosstalk among the cores.