Electron discharge device having a substantially spherical elect

Details Electron discharge device having a substantially spherical elect Electron discharge device having a substantially spherical elect

1984-02-10

1986-04-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313103CM, 313540, 313250, H01J 3150

Patent

active

045859353

ABSTRACT:
An electron discharge device of the type including an evacuated envelope having a longitudinal axis comprises a photoemissive cathode for providing electrons in response to radiation incident thereon and a charge coupled device spaced from the cathode. A plurality of washer-like focusing electrodes are disposed between the cathode and the charge coupled device for focusing electrons therebetween. Each of the electrodes has an electron aperture of progressively decreasing diameter. The electron aperture of the electrode adjacent to the cathode is larger than the electron aperture in the electrode adjacent to the charge coupled device. The electrodes provide a substantially spherical electrostatic field lens between the photoemissive cathode and the charge coupled device.

REFERENCES:
patent: 2131185 (1938-09-01), Knoll
patent: 2189319 (1940-02-01), Morton
patent: 2487665 (1949-11-01), Morton et al.
patent: 2666864 (1954-01-01), Longini
patent: 3290171 (1966-12-01), Zollman et al.
patent: 3502928 (1970-03-01), Guyot et al.
patent: 3658400 (1972-04-01), Helvy
patent: 3735139 (1973-05-01), Kalitinsky et al.
patent: 3936687 (1976-02-01), Schagen et al.
patent: 4021693 (1977-05-01), Bradley et al.
patent: 4355229 (1982-10-01), Zimmerman et al.
Patent Abstract 488,416, by Zietline et al., Dec. 3, 1936.
Patent Abstract DE 2852-972-C from Derwent Publications, Nov. 2, 1983, p. 28.
SIT/CCD Camera Tube C21205 Data Sheet, published by RCA, Lancaster, PA 17604.

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