Photomultiplier

Details Photomultiplier Photomultiplier

2005-12-06

2008-01-08

Roy, Sikha (Department: 2879)

Electric lamp and discharge devices

Photosensitive

Photomultiplier

C313S532000, C313S534000, C313S536000

Reexamination Certificate

active

07317283

ABSTRACT:
The present invention relates to a photomultiplier having a structure for performing a high gain and achieving a higher productivity in a state keeping or improving an excellent high-speed response. In the photomultiplier, an electron-multiplying unit accommodated in a sealed container has a structure that enables an integrated assembly of a focusing electrode, an accelerating electrode, a dynode unit, and an anode. Specifically, the focusing electrode has one or more notched portions to be grasped by a part of each of the insulating support members for grasping directly the dynode unit and so on when the focusing electrode itself is rotated around the tube axis of the sealed container. With this construction, the focusing electrode is fixed to the pair of insulating support members in a state that the focusing electrode is aligned with high accuracy by using the pair of insulating support member as a reference member.

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