Picture taking tube having a bias light device

Details Picture taking tube having a bias light device Picture taking tube having a bias light device

1987-10-16

1989-04-18

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313384, 315 10, 350 961, H01J 3138, G02B 514

Patent

active

048230456

ABSTRACT:
A picture taking tube is provided having a bias light device, said device being formed by a diffuser and a ring of light emitting diodes, which are placed about the glass vacuum enclosure of the tube, the light penetrating into the enclosure through gaps between the electrodes of the tube and also, if necessary, through small sized openings formed in these electrodes.

REFERENCES:
patent: 3751703 (1973-08-01), Weijland et al.
patent: 3925699 (1975-12-01), Banks et al.
patent: 4259609 (1981-03-01), Month et al.
patent: 4465927 (1984-08-01), Scholz et al.
Patent Abstracts of Japan, vol. 2, No. 40, 16 Mar. 1978, p. 182 E78; & JP-A-53 4419 (Hitachi Seisakusho K.K.) 17-01-1978.
Patent Abstracts of Japan, vol. 2, No. 40, 16 Mar. 1978, p. 182 E78; & JP-A-53 4418 (Hitachi Seisakusho K.K.) 17-01-1978.

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