Image converter having serial arrangement of microchannel plate,

Details Image converter having serial arrangement of microchannel plate, Image converter having serial arrangement of microchannel plate,

1980-10-20

1982-07-13

Segal, Robert

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313 95, 313 99, H01J 3150, H01J 4012

Patent

active

043396593

ABSTRACT:
Radiant energy images are converted into visual images or video signals by the image converter of the present invention. Input radiant energy images impinge upon a photocathode which is formed on a radiant energy sensitive phosphor that is in turn deposited on the input electrode of a microchannel plate (MCP). A mesh or ring electrode is disposed adjacent the photocathode and biased negative with respect to the MCP input electrode to reflect photoelectrons produced at the photocathode into the MCP. The photoelectrons at the output of the MCP are focused onto a readout device to provide the visual images or video signals. This structure provides high quantum efficiency and improves image quality while retaining relatively high limiting-resolution and high gain.

REFERENCES:
patent: 2955219 (1960-10-01), Niklas
patent: 3089956 (1963-05-01), Harper
patent: 3327151 (1967-06-01), Adams et al.
patent: 3617743 (1971-11-01), Rabatin et al.
patent: 4051403 (1977-09-01), Feingold et al.

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