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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.:

US 4550251 B1

PDFFull Text
Date of Patent:
Oct. 29, 1985

Filed:

Jul. 08, 1983

Image intensifier tube with increased contrast ratio

Applicant:
Inventors:

Louis T Zitelli, Palo Alto, CA (US);

Richard T Schumacher, Cupertino, CA (US);

Assignee:

Varian Associates, Inc., Palo Alto, CA (US);

Attorneys:

Cole; Stanley Z.

Nishimura; Keiichi

Schnapf; David

Primary Examiner:

David C Nelms

Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 3131 / ;
Abstract

The contrast ratio of an image intensifier of the photocathode-amplifier-phosphor type is increased by using a fiber optic plate of which the thickness is reduced to such extent that the plate may not be able to function as a vacuum seal or an electrical insulator when a typical voltage for the operation of the intensifier is applied to the phosphor layer. This relatively thin fiber optic plate is placed entirely inside a vacuum, protected from the atmospheric pressure by a thick output window plate which is optically transparent.

Find Patent Forward Citations

Zitelli, Louis. (1985). Image intensifier tube with increased contrast ratio (U.S. Patent No. 4550251). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4550251

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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