Image intensifier tube comprising coated electrodes

Details Image intensifier tube comprising coated electrodes Image intensifier tube comprising coated electrodes

1990-01-08

1991-04-30

Yusko, Donald J.

Electric lamp and discharge devices

Secondary emission prevention

Nonemissive material

313524, 313353, 313355, 313106, H01J 1928

Patent

active

050121529

ABSTRACT:
Metal parts of an image intensifier tube which are exposed to a high voltage are coated with a layer of aluminum phosphate glass in order to preclude local discharge phenomena; the aluminum phosphate glass can be deposited in a thin, uniform layer already at a comparatively low flow temperature. Because the layer is thin, it is not necessary to take into account differences in coefficients of expansion, so that a high degree of freedom is achieved as regards the choice of materials for the metal parts.

REFERENCES:
patent: 2879406 (1959-03-01), Wachtel
patent: 3895250 (1975-07-01), Christgau et al.

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