Title:
光電子増倍管
Document Type and Number:
Japanese Patent JP4237308
Kind Code:
B2
Abstract:
A metal side tube (2), a glass faceplate (3), and a stem plate () constitute a hermetically sealed vessel (5) for a photomultiplier tube. An edge portion (20) is provided at on open end (A) of the side tube (2). The edge portion (2) is embedded in the faceplate (3) in such a manner as to strike on the faceplate (3). Accordingly, high hermeticity at a joint between the side tube (2) and the faceplate (3) is ensured. The edge portion (20) extends upright in an axial direction of the side tube (2), so that the edge portion (20) can be embedded as close to a side face (3c) of the faceplate (3) as possible. This structure increases an effective sensitive area of the faceplate (3) to nearly 100%, and decreases dead area as close to 0 as possible. As described above, the photomultiplier tube (1) according to the present invention has enlarged effective sensitive area of the side tube (3) and enhanced hermeticity of the joint between the faceplate (3) and the side tube (2).
Inventors:
Hideki Shimoi
Hiroyuki Hisashima
Akira Atsumi
Hiroyuki Hisashima
Akira Atsumi
Application Number:
JP31917498A
Publication Date:
March 11, 2009
Filing Date:
November 10, 1998
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01J43/28; H01J40/14; H01J43/04; H01J43/18
Domestic Patent References:
| JP5290793A | ||||
| JP5190121A | ||||
| JP8017394A | ||||
| JP10241623A | ||||
| JP11345588A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Satoru Ishida
Hiroto Kido
Masato Ikeda
Shiro Terasaki
Satoru Ishida
Hiroto Kido
Masato Ikeda
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