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. 14, 2012
Filed:
Feb. 22, 2010
Hideki Shimoi, Hamamatsu, JP;
Hitoshi Kishita, Hamamatsu, JP;
Tsuyoshi Kodama, Hamamatsu, JP;
Hiroyuki Kyushima, Hamamatsu, JP;
Hideki Shimoi, Hamamatsu, JP;
Hitoshi Kishita, Hamamatsu, JP;
Tsuyoshi Kodama, Hamamatsu, JP;
Hiroyuki Kyushima, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
Electrons are prevented from being made incident onto an insulation part of a casing between dynodes to improve a withstand voltage. The photomultiplier tubeis a photomultiplier tube which is provided with substratesarranged so as to oppose each other, with the respective opposing surfacesmade with an insulating material, a substrateconstituting a casing together with the substrates, dynodestoarrayed on an opposing surfaceon the substrateso as to be spaced away sequentially from a first end side to a second end side, a photocathodeinstalled so as to be spaced away from the dynodeto the first end side, and an anode partinstalled so as to be spaced away from the dynodeto the second end side, in which the opposing surfaceof the substrateis formed so as to cover the dynodesto, and a plurality of conductive layerstoset equal in potential to dynodestowhich are electrically independent from each other are installed at sites opposing individually the dynodestoon the opposing surface