Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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31/00
Cathode ray tubes; Electron beam tubes
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H01J31/08
having a screen on or from which an image or pattern is formed, picked up, converted, or stored
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H01J31/50
Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
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H01J31/506
tubes using secondary emission effect
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H01J31/507
using a large number of channels, e.g. microchannel plates
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