Cathode ray tube glare filter, radiation and static electricity

Details Cathode ray tube glare filter, radiation and static electricity Cathode ray tube glare filter, radiation and static electricity

1985-08-02

1987-04-28

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358253, 358255, 350276SL, 174 35MS, H04N 572

Patent

active

046618562

ABSTRACT:
A combined glare and radiation and static electricity suppression device, for use on the face of a cathode ray tube, consisting of an opaque, conductive mesh, and a spherical frame which is preformed to the same curvature as the cathode ray tube and serves to conform the mesh to the tube and hold the device in place. The frame is painted with a conductive paint on the side where the mesh is bonded to the frame. The bonding is done using a solvent which softens the paint without affecting the conductive contact between the paint and the mesh. A grounding connection is connected to the conductive side of the frame to a grounding point on the assembly including the cathode ray tube. The mesh, when grounded, minimizes static field build-up and significantly reduces the electric component of electromagnetic radiation emanating from the cathode ray tube and passing through the front of the tube. The device is also effective to reduce glare from illumination from in front of the tube.

REFERENCES:
patent: 3305623 (1967-02-01), Bakker et al.
patent: 3431348 (1969-03-01), Nellis et al.
patent: 4246613 (1981-01-01), Choder et al.
patent: 4253737 (1981-03-01), Thomsen et al.
patent: 4412255 (1983-10-01), Kuhlman
patent: 4514585 (1985-04-01), Paynton

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