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. 28, 1978
Filed:
Oct. 14, 1976
Applicant:
Inventors:
Thomas M Brennan, Cambridge, MA (US);
Robert M Burley, Concord, MA (US);
Assignee:
Baird-Atomic, Inc., Bedford, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
2502 / ; 350 9625 ; 350 52 ; 350167 ; 250227 ;
Abstract
A tapered or twisted fiber optic bundle having a unidirectional diffuser at an output face thereof defines a fiber optic bundle beam expander. In a viewing system, such a beam expander is provided at the output of an image intensifier tube for unidirectionally spreading rays of an amplified image in a horizontal direction for biocular viewing.