Electric lamp and discharge devices – Photosensitive – Having photocathode on tube wall
Patent
1983-02-16
1983-09-27
Smith, Alfred E.
Electric lamp and discharge devices
Photosensitive
Having photocathode on tube wall
313371, 313532, 313117, H01J 4000
Patent
active
044069731
ABSTRACT:
A shielded clear glass cathode substrate (44) is provided for use in an image intensifier tube of the type utilizing a clear glass cathode substrate (46). A black glass cathode substrate shield (48) is coextensive with the entire longitudinal surface of the clear glass cathode substrate (46). The black glass forming the black glass cathode substrate shield (48) has an index of refraction that is greater than the index of refraction of the clear glass utilized in the clear glass cathode substrate (46). A method is provided for producing a shielded glass cathode substrate from a mass of clear glass (52).
REFERENCES:
patent: 3070720 (1962-12-01), Turk
patent: 4157484 (1979-06-01), Stowe et al.
patent: 4240694 (1980-12-01), Pan
patent: 4310778 (1982-01-01), Horseling
Mills Jerry W.
Smith Alfred E.
Varo Inc.
Wieder K.
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