Cathode-ray tube

Details Cathode-ray tube Cathode-ray tube

H - Electricity

04

N

261/13

H04N 9/16 (2006.01) C03C 3/102 (2006.01) C03C 3/105 (2006.01) H01J 29/86 (2006.01)

Patent

CA 1101894

ABSTRACT: A cathode-ray tube having a face plate of soft glass which up to an accelerating voltage of 40 KV gives an X-ray emission of at most 0.5 mr/h measured at a distance of 5 cm. The glass has a strain point between 450 and 480° and a softening tempera- ture between 660 and 770°C. It comprises inter alia 3-14% by weight of BaO and 5-10 % by weight of PbO. - 11 -

303692

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