Electric lamp and discharge devices – Photosensitive – Photomultiplier
Reexamination Certificate
2011-08-02
2011-08-02
Patel, Nimeshkumar D (Department: 2879)
Electric lamp and discharge devices
Photosensitive
Photomultiplier
C313S532000, C313S533000, C313S534000, C313S536000
Reexamination Certificate
active
07990064
ABSTRACT:
The present invention relates to a photomultiplier that realizes significant improvement of response time properties with a structure enabling mass production. In the sealed container, a photocathode, a dynode unit including at least one dynode set, and preferably dynode sets of two series, a focusing electrode unit arranged between the photocathode and the dynode unit are housed. The focusing electrode unit is set to the same potential as the second dynode arranged at a position where secondary electrons from said first dynode, which emits secondary electrons in response to incidence of photoelectrons, arrive, and is provided with partitioning plates partitioning the second dynode into two in a longitudinal direction of the second dynode.
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Ohmura Takayuki
Yamaguchi Teruhiko
Drinker Biddle & Reath LLP
Hamamatsu Photonics K.K.
Hollweg Thomas A
Patel Nimeshkumar D
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