Television camera tube with conductive or secondary emissive region between window seal and mesh
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United States of America Patent
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-
Apr 1, 1980
Grant Date -
N/A
app pub date -
Apr 8, 1977
filing date -
Apr 12, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to avoid picture disturbances by electric charging phenomena on the tube wall in a camera tube in which no target material is present on the inner wall of the cylinder tube, the tube wall is provided with a surface potential stabilizing material between the window connection and the mesh electrode of the camera tube. This stabilization can be realized by way of a local cover layer having the desired electric conductivity or secondary emission properties, or by locally adapting properties of the glass of the tube wall thereto.
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