Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Reexamination Certificate
2005-09-20
2005-09-20
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
C313S409000, C313S446000
Reexamination Certificate
active
06946784
ABSTRACT:
The present invention is to provide an electron gun of a monochromic CRT comprising at least two electron emission sources (e.g., cathodes) for emitting beams having a small beam spot size and being adapted to impinge on the same spot of a screen of the monochromic CRT after having been focused by a focusing lens or common lens in the electron gun. As an end, the resolution, focusing quality and brightness of the screen of the monochromic CRT are improved.
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Chang Li-Na
Lin Pei-Kuang
Mo Chi-Neng
Yang Yung-Wei
Chunghwa Picture Tubes Ltd.
Colón German
Guharay Karabi
J.C. Patents
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