Image intensifier tube with photocathode protective circuit

Details Image intensifier tube with photocathode protective circuit Image intensifier tube with photocathode protective circuit

1979-07-23

1981-08-25

Segal, Robert

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313 95, H01J 3150, H01J 4014

Patent

active

042861489

ABSTRACT:
An image intensifier tube comprising a photocathode, and a channel plate having an entrance electrode on the surface of the channel plate and having an input electrode, integral with the entrance electrode, which extends from the surface of the channel plate toward the photocathode. Between the photocathode and the input electrode of the channel plate, there is a single intermediate electrode which has a potential applied thereto which during operation forms a complete barrier against ions leaving the channel plate. By an optimum choice of the various potentials and shape of the electrodes, the input electrode of the channel plate comprising an upright cylinder, a distortionless image of the photocathode and a more uniform landing direction for the photo electrons is ensured.

REFERENCES:
patent: 3407324 (1968-10-01), Rome
patent: 3708673 (1973-01-01), Blacker
patent: 3849692 (1974-11-01), Beasley et al.
patent: 3868536 (1975-02-01), Enck
patent: 3879626 (1975-04-01), Washington et al.
patent: 4095136 (1978-06-01), Niklas

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