Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1998-02-20
1999-12-28
Patel, Vip
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313544, H01J 4304
Patent
active
060085797
ABSTRACT:
An electron tube in which a side tube and a faceplate are sealed together using a malleable metal with a low melting point. The metal is made to spread out along the outer surface of the faceplate due to pressure from a first sealing portion of a sealing metal support member and along the peripheral surface of the electron tube due to pressure from a second sealing portion of the sealing metal support member. Accordingly, the outer side of the corner portion formed by the faceplate and the side tube is covered with the metal. This construction not only reliably secures the input faceplate to the side tube, but also is extremely effective in preserving the airtightness of the electron tube. Since the first sealing portion is pressed toward the faceplate, an appropriate pressure can be applied to the metal interposed between the first sealing portion and the faceplate, improving the sealability of the metal against the faceplate and the first sealing portion. This construction is also appropriate for mass production of electron tubes.
REFERENCES:
patent: 3153839 (1964-10-01), Pakswer et al.
patent: 4030789 (1977-06-01), Schampers et al.
patent: 4608517 (1986-08-01), Neuer
Asakura Norio
Nagai Toshimitsu
Negi Yasuharu
Suyama Motohiro
Hamamatsu Photonics K.K.
Patel Vip
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