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. 06, 1990
Filed:
Mar. 15, 1971
Barry M Singer, New York, NY (US);
Amos Picker, Sharon, MA (US);
Varian Associates, Inc., Palo Alto, CA (US);
Abstract
An image intensifier tube comprising an input screen assembly which includes a photosensitive semiconductor wafer having a substrate of one conductivity type material forming a plurality of P-N junctions with a planar array of mutually isolated islands of opposite conductivity type material, the islands protruding substantially equal distances from a common surface of the substrate, an opaque film of resistive material overlying the exposed areas of the islands and the common surface of the substrate, a layer of electroluminescent material disposed in abutting relationship with the distal ends of the islands and a layer of photoemissive material disposed in axially aligned relationship with the electroluminescent layer.