Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1995-03-07
1997-01-28
O'Shea, Sandra L.
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313533, 313534, 313105R, H01J 4304, H01J 4320, H01J 4300
Patent
active
055980619
ABSTRACT:
A photomultiplier includes a photoelectric surface for photoelectrically converting incident light and emitting electrons, and a plurality of stages of dynodes for multiplying the electrons. The photomultiplier includes a first dynode array including box-and-grid dynodes arranged in a vessel and a second dynode array including in-line dynodes arranged in the vessel. A dynode having a curved secondary electron emitting layer opposes both a secondary electron emitting layer of a last stage dynode of the first dynode array and a secondary electron emitting layer of a first-stage dynode of the second dynode array.
REFERENCES:
patent: 4575657 (1986-03-01), Kaiser
patent: 5416382 (1995-05-01), L'Hermite
Patent abstracts of Japan, vol. 008, No. 226, Oct. 1984 and JP-A-59 108254 (Hamamatsu Hotonikusu KK) Jun. 22, 1984.
European Search Report dated Jul. 14, 1995.
Fujita Yoshio
Nakamura Kimitsugu
Ohishi Keiichi
Hamamatsu Photonics K.K.
Ning John
O'Shea Sandra L.
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