发明公开
EP1786015A2 Front face for cathode ray tube with reduced depth
审中-公开
前身为Kathodenstrahlröhremit verringerter Bautiefe
- 专利标题： Front face for cathode ray tube with reduced depth
- 专利标题（中）： 前身为Kathodenstrahlröhremit verringerter Bautiefe
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申请号： EP06122823.5申请日： 2006-10-24
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公开(公告)号： EP1786015A2公开(公告)日： 2007-05-16
- 发明人: Incagli, Renzo , Di Giamberardino, Francesco , Tulli, Carlo , Necci, Stefano
- 申请人： Thomson Licensing, Inc.
- 申请人地址： 46, Quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 专利权人： Thomson Licensing, Inc.
- 当前专利权人： Thomson Licensing, Inc.
- 当前专利权人地址： 46, Quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 代理机构： Ruellan-Lemonnier, Brigitte
- 优先权： ITMI20052139 20051109
- 主分类号： H01J29/86
- IPC分类号： H01J29/86
摘要：
Self-converging cathode ray tube with a deflection angle that is greater than 110°. The tube comprises a front panel supporting a luminescent screen surrounded by a flange perpendicular to the panel, the internal surface of the said panel being defined by radii of curvature Rdi along the diagonal, Rxi along the major axis and Ryi along the minor axis such that:
- 4 ≥ Rdi/d ≥ 2
- 0.8 ≥ Ryi/Rdi ≥ 0.4
- 1≥ Rxi/Rdi ≥ 0.7
Hence, the geometric distortion of the picture engendered by the self-converging deflection device is minimized, while enabling the shadow mask equipping such a tube to be less sensitive to thermal interferences.
- 4 ≥ Rdi/d ≥ 2
- 0.8 ≥ Ryi/Rdi ≥ 0.4
- 1≥ Rxi/Rdi ≥ 0.7
Hence, the geometric distortion of the picture engendered by the self-converging deflection device is minimized, while enabling the shadow mask equipping such a tube to be less sensitive to thermal interferences.
公开/授权文献
- EP1786015A3 Front face for cathode ray tube with reduced depth 公开/授权日：2009-07-15
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