Scanning-area rotation device for an image pickup tube

Details Scanning-area rotation device for an image pickup tube Scanning-area rotation device for an image pickup tube

1979-08-14

1981-09-15

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335301, 315 10, H01J 3126

Patent

active

042900387

ABSTRACT:
A scanning-area rotation device for an image pickup tube has a coil (10) for rotating a scanning-area by an electron beam on the target surface of an image pickup tube (14), a shield ring (46) for electrostatically shielding the coil (10) from the target of the image pickup tube (14), and a shield cover (44) for magnetically shielding the coil (10). The shield ring (46) electrostatically shields the target and signal circuit connecting to the target from the coil (10), but does not shield a magnetic flux from the coil (10) to the target. The shield cover (44) shields a magnetic flux developed by the coil (10) and extending to the exterior of the cover (44).

REFERENCES:
patent: 2217409 (1940-10-01), Hepp
patent: 4145678 (1979-03-01), Takikawa
patent: 4221992 (1980-09-01), Ueda et al.

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