Photomultiplier and photodetector including the same

Details Photomultiplier and photodetector including the same Photomultiplier and photodetector including the same

2006-10-03

2006-10-03

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S207000, C313S533000, C313S1030CM

Reexamination Certificate

active

07115854

ABSTRACT:
The present invention relates to a photomultiplier that can realize a gain adjustment for each of electron multiplier channels respectively assigned to a plurality of light incidence regions in a more compact structure. The photomultiplier has a sealed container, and a photocathode, a dynode unit, and plurality of anodes prepared for electron multiplier channels are housed in the sealed container. The dynode unit is constituted by N (an integer or no less than 3) dynode plates, each provided with an electron multiplier hole for the associated channel, concerning all channels. In particular, the n-th (an integer of no less then 2) dynode plate is constituted by a plurality of control plates, each having an electron multiplier hole for the associated channel, and electrically and physically separated from the others. These control plates are supported in state of being supported, via insulators, by the (n−1)-th dynode plate and the (n+1)-th dynode plate.

REFERENCES:
patent: 5077504 (1991-12-01), Helvy
patent: 6472664 (2002-10-01), Kyushima et al.
patent: 6617768 (2003-09-01), Hansen
patent: 7-335174 (1995-12-01), None
patent: 03/004982 (2003-01-01), None

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