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:
Aug. 13, 2013
Filed:
Nov. 05, 2010
Hugh Robert Andrews, Pembroke, CA;
Edward T. H. Clifford, Deep River, CA;
Marius Emanuel Facina, Deep River, CA;
Harry Ing, Deep River, CA;
Vernon Theodore Koslowsky, Deep River, CA;
Darren Adam Locklin, Petawawa, CA;
Martin Bernard Smith, Deep River, CA;
Irina Stefania Stefanescu, Deep River, CA;
Hugh Robert Andrews, Pembroke, CA;
Edward T. H. Clifford, Deep River, CA;
Marius Emanuel Facina, Deep River, CA;
Harry Ing, Deep River, CA;
Vernon Theodore Koslowsky, Deep River, CA;
Darren Adam Locklin, Petawawa, CA;
Martin Bernard Smith, Deep River, CA;
Irina Stefania Stefanescu, Deep River, CA;
Bubble Technology Industries Inc., Chalk River, Ontario, CA;
Abstract
The Microstructure Photomultiplier Assembly (MPA) enables the effective conversion of light signals (received at the front of the assembly) into readily-detectable electrical signals. The MPA comprises a photocathode, followed by an electron-multiplying plate(s) made from an insulating substrate which does not emit sufficient contaminants to poison the photocathode. Each plate is coated with a conductive layer. The front face of each plate is further coated with a layer of secondary electron-emissive material which, when struck by an incoming electron, can produce secondary electrons. Each plate is perforated with channels. The channels are designed to promote the efficient transfer and acceleration of electrons through the channels, under an applied voltage differential across the plate(s). An anode (pixelated or non-pixelated) at the end of the last plate collects the electrons and generates an electrical signal. The MPA is contained within a vacuum enclosure.