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Patent Searching and Data


Title:
STRUCTURE OF PHOTOELECTRIC SCREEN
Document Type and Number:
Japanese Patent JPS6035449
Kind Code:
A
Abstract:

PURPOSE: To reduce the resistance of a photoelectric screen and improve its response by connecting a conductor mesh to a metallic electrode layer that supplies a photoelectron emission layer with current and providing the photoelectron emission layer in the mesh and then forming the photoelectric screen.

CONSTITUTION: An aluminum electrode 15 is provided on the upper part of a window material 5 at the light incidence side of a vacuum container 1 in a photomultiplier tube and such and an aluminum layer is deposited on a window surface. Then, a metallic mesh electrode 16 that forms meshes by photoetching is arranged. In addition, a photoelectric screen 14 is formed by depositing Sb on the metallic mesh electrode 16 by making Cs, K, and Na metal vapor react to Sb. As a result, since current is supplied from a conductive mesh near a photoelectron emission point to the point, the resistance of the photoelectric screen 14 can be reduced and the photoelectric screen can be applied to the generation of high optical current and high speed response.


Inventors:
OOBA KOUICHIROU
Application Number:
JP14422883A
Publication Date:
February 23, 1985
Filing Date:
August 05, 1983
Export Citation:
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Assignee:
HAMAMATSU PHOTONICS KK
International Classes:
H01J40/02; H01J1/34; H01J40/06; H01J43/08; (IPC1-7): H01J40/06; H01J43/08
Attorney, Agent or Firm:
Toshi Inoguchi