Title:
OPTOELECTRONIC MULTIPLIER
Document Type and Number:
Japanese Patent JPH02288145
Kind Code:
A
Abstract:
PURPOSE: To accomplish improvement in collecting efficiency of a tube, reduction of a total transfer time, and miniaturization of a photomultiplier and the tube as a whole by comprising a plurality of concentric housing electrodes serving as sections of elliptic dome substantially. CONSTITUTION: A photo multiplier tube is constructed of an envelope 12, a face plate 14, a photoelectric emission cathode 16, a photomultiplier structure 18, the first dynode 20, a facing electrode structure 32, focusing electrodes 34, 36, 38, and an evaporator 42. Main segments, which are provided with faces tilted by tilting angles of at least 10 degrees and formed into ellipses or spheroids, are arranged from the photomultiplier part 18 to the photoelectric emission cathode 16 so that their diameters are increased in order while voltage is lowered in order. These focusing electrodes 32 form a precise electric field. In this way, collecting efficiency of the tube can be increased, a total transfer time can be reduced, and the photomultiplier tube 18 and the tube as a whole can be miniaturized.
Inventors:
FURETSUDO EI HERUBII
GIRUBAADO ENU BATAAUITSUKU
GIRUBAADO ENU BATAAUITSUKU
Application Number:
JP9992689A
Publication Date:
November 28, 1990
Filing Date:
April 19, 1989
Export Citation:
Assignee:
BURLE TECHNOLOGIES
International Classes:
H01J40/04; H01J40/16; H01J43/04; (IPC1-7): H01J40/04; H01J40/16; H01J43/04
Attorney, Agent or Firm:
Satoshi Shimizu (2 outside)
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