Electron gun for cathode-ray tube with improved beam shaping...

Details Electron gun for cathode-ray tube with improved beam shaping... Electron gun for cathode-ray tube with improved beam shaping...

2005-03-18

2009-02-03

Macchiarolo, Peter (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

C313S409000

Reexamination Certificate

active

07486009

ABSTRACT:
An electrode gun for a cathode-ray tube, including at least a first electrode and a second electrode for shaping and focusing the electron beam emitted by a cathode is described. These electrodes are made of a non-oxidizing alloy whose coefficient of expansion between 20° C. and 300° C. lies between 4×10−6/° C. and 13×10−6/° C.

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patent: 0 425 205 (1990-10-01), None
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http://www.matweb.com/search/DataSheet.aspx?MatID=14699; materials data sheet.
http://www.phynicx.com/site/soft—magnetic—alloys.php; materials data sheet.
European Search Report.

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