Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1981-11-20
1984-05-01
Moore, David K.
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313532, 313541, 313537, H01J 4000
Patent
active
044464010
ABSTRACT:
A photomultiplier tube includes an evacuated envelope having therein a photocathode, an anode and an electron multiplier disposed between the cathode and the anode for propagating and concatenating electrons along a path therebetween. The electron multiplier and the anode are supported by a pair of oppositely-disposed support plates. At least one aperture which extends along at least a portion of the electron path is formed in each plate. A pair of focusing shields may be spaced from the exterior surface of each of the support plates. The focusing shields are disposed adjacent to the apertures in the support plates and extend longitudinally along the electron path to provide a transverse focusing field which prevents substantially all of the electrons from impinging on the interior surface of the support plates.
REFERENCES:
patent: 2200722 (1940-05-01), Pierce et al.
patent: 2245624 (1941-06-01), Teal
patent: 2895068 (1959-07-01), Rodda
patent: 3183390 (1965-05-01), Grader et al.
patent: 3873867 (1975-03-01), Girvin
patent: 4184098 (1980-01-01), Morales
patent: 4370585 (1983-01-01), Butterwick
Faulkner Richard D.
McDonie Arthur F.
Thoman Daniel L.
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
Moore David K.
RCA Corporation
Whitacre Eugene M.
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