Precoated resistive lens structure for electron gun and method o

Details Precoated resistive lens structure for electron gun and method o Precoated resistive lens structure for electron gun and method o

1979-06-25

1981-07-28

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313414, 313450, 29 2513, H01J 2982

Patent

active

042812704

ABSTRACT:
An electron gun includes two electrodes between which a resistive lens structure is mounted. The lens structure comprises a stack of alternate apertured electrode plates and insulator spacer blocks. A high resistance coating of, e.g., cermet or glaze material, is precoated along one side of each spacer block prior to assembly of the stack, so that upon assembly the stack has a high resistance electrical continuity from one end to the other.

REFERENCES:
patent: 2143390 (1939-01-01), Schroter
patent: 2313018 (1943-03-01), Krause
patent: 3932786 (1976-01-01), Campbell
patent: 4010312 (1977-03-01), Pinch et al.
patent: 4091144 (1978-05-01), Dresner et al.

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