Television camera tube with antihalo plate

Details Television camera tube with antihalo plate Television camera tube with antihalo plate

1980-05-08

1982-01-12

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313384, 313478, H01J 2989, H01J 3126

Patent

active

043107788

ABSTRACT:
In a television camera tube flare is reduced without introducing vignetting by using an antihalo plate. A contact surface of the plate with the tube's window is slightly larger than a frame which is described by the tube's electron beam on a photoconductive target inside the window. An entrance face of the plate has a diagonal or diameter which is slightly larger than the contact surface.

REFERENCES:
patent: 2312206 (1943-02-01), Calbick
patent: 4080547 (1978-03-01), Kohzai
patent: 4251748 (1981-02-01), van Tongeren et al.
patent: 4253039 (1981-02-01), Fujita et al.

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