Electric lamp and discharge devices – Photosensitive – Photomultiplier
Reexamination Certificate
2006-06-20
2006-06-20
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
Photosensitive
Photomultiplier
C313S532000, C313S535000, C313S1030CM, C313S1050CM, C250S2140VT
Reexamination Certificate
active
07064485
ABSTRACT:
A glass container has a faceplate, a side tube, and a bottom. A photocathode is formed on the inner side of the faceplate. The glass container includes a first dynode, a second dynode, a screen focusing electrode, a dynode array, and an anode. The screen focusing electrode consists of a first screen, a second screen, a flat plate, and an aperture. The first screen is provided on the first dynode side of the aperture and extends across the lower end of the first dynode towards the photocathode. The second screen is provided on the second dynode side of the aperture and extends across the lower end of the second dynode towards the photocathode. A Venetian blind type is provided as the dynode array. The first dynode, the second dynode, the dynode array, and the anode are maintained at the potential which is higher than that of the photocathode. Electrons emitted from the photocathode in response to incident light thereon efficiently impinge on the dynodes regardless of where the electrons are emitted. The electrons are multiplied and then detected by the anode.
REFERENCES:
patent: 4777403 (1988-10-01), Stephenson
patent: 5416382 (1995-05-01), L'Hermite
patent: 5598060 (1997-01-01), L'Hermite
patent: 5689152 (1997-11-01), Boutot et al.
patent: C2 118794 (1937-01-01), None
patent: A 6-111757 (1994-04-01), None
patent: A 06-150876 (1994-05-01), None
patent: A 7-192686 (1995-07-01), None
patent: A 07-192686 (1995-07-01), None
patent: A 07-245078 (1995-09-01), None
patent: A 08-017389 (1996-01-01), None
patent: A 8-306335 (1996-11-01), None
patent: A 11-250853 (1999-09-01), None
Ito Masuo
Kimura Suenori
Ohmura Takayuki
Yamaguchi Teruhiko
Hamamatsu Photonics K.K.
Oliff & Berridg,e PLC
Williams Joseph
Won Bumsuk
LandOfFree
Photomultiplier tube having focusing electrodes with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photomultiplier tube having focusing electrodes with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photomultiplier tube having focusing electrodes with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3693899