Photomultiplier tube with enchanced hermiticity

Details Photomultiplier tube with enchanced hermiticity Photomultiplier tube with enchanced hermiticity

2006-12-12

2006-12-12

Luu, Thanh X. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S207000, C313S1030CM

Reexamination Certificate

active

07148461

ABSTRACT:
A metal side tube (2), a glass faceplate (3), and a stem plate (4) 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).

REFERENCES:
patent: 3683194 (1972-08-01), Levin et al.
patent: 3890526 (1975-06-01), Palac
patent: 3951698 (1976-04-01), Wilson et al.
patent: 4249668 (1981-02-01), Katayama et al.
patent: 5504386 (1996-04-01), Kyushima et al.
patent: 5594301 (1997-01-01), Sawai et al.
patent: 5864207 (1999-01-01), Kume et al.
patent: 5886465 (1999-03-01), Muramatsu et al.
patent: 6324870 (2001-12-01), Chabin et al.
patent: 6762555 (2004-07-01), Kyushima et al.
patent: 6835922 (2004-12-01), Shimoi et al.
patent: 6946641 (2005-09-01), Shimoi et al.
patent: A 5-290793 (1993-11-01), None
patent: A 11-345587 (1999-12-01), None
patent: A 2000-149860 (2000-05-01), None
patent: A 2000-149861 (2000-05-01), None
U.S. Appl. No. 10/275,654, filed Nov. 8, 2002.

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