Television camera tube

Details Television camera tube Television camera tube

1982-12-23

1988-06-21

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313348, H01J 3100

Patent

active

047527153

ABSTRACT:
A television camera tube comprising an evacuated envelope enclosing an electron gun. The electron gun has, in the direction of propagation of the generated electron beam, a cathode, a grid, an anode and a cylindrical electrode. The cylindrical electrode has a diaphragm. The anode has a portion that extends substantially perpendicularly to the electron beam and includes an aperture. A first metal foil is provided on the side of the anode toward the target. The metal foil covers the aperture of the anode, but has an aperture for the electron beam. The diameter of the aperture in the foil is no more than 0.15 mm and no less than the diameter of the electron beam. A second metal foil is provided on the anode on the other side thereof. The second foil also covers the aperture of the anode. The second foil has an aperture for the electron beam. The diameter of the aperture in the second foil is smaller than the diameter of the aperture in the first metal foil, but is not less than the diameter of the electron beam. As a result, interference in the recorded image as a result of a return beam in the tube is considerably reduced.

REFERENCES:
patent: 3928784 (1975-12-01), Weijland
patent: 4376907 (1983-03-01), Himmelbauer
patent: 4467243 (1984-08-01), Fukushima et al.

Affiliated with

Also associated with

Rating

Television camera tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television camera tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television camera tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-930953