Television camera tube having resilient gauze supporting structu

Details Television camera tube having resilient gauze supporting structu Television camera tube having resilient gauze supporting structu

1977-07-13

1979-10-02

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313390, H01J 2908, H01J 3138

Patent

active

041699866

ABSTRACT:
If in a television camera tube the gauze-shaped electrode which is tensioned before the signal plate is assembled in a damped mass-spring system, in which the ratio of the mass of said system to the mass of the gauze should be larger than 30, while the fundamental frequency of the gauze and the natural frequency of the mass system differ less than 10% from each other and the damping of the mass spring system is so large that the time necessary for a decrease in amplitude of 20 db of the vibration of the mass of the mass spring system is smaller than 0.5 second, a tube is obtained having a low microphony.

REFERENCES:
patent: 2909687 (1959-10-01), Turk et al.
patent: 3461336 (1969-08-01), Fuller et al.
patent: 4004177 (1977-01-01), VAN Hattum et al.

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