发明名称 |
Index-type color cathode ray tube |
摘要 |
First and second index signal phosphor layers are formed on a phosphor screen that is formed on the inner surface of a face plate. A rear plate is provided with first and second light sensing units for detecting signal lights from the first and second index signal phosphor layers, respectively. Each first light sensing unit includes a first light collecting plate, which radiates absorbing light having a radiation peak wavelength substantially equal to or shorter than the radiation wavelength of each first index signal phosphor layer. Each second light sensing unit includes a second light collecting plate, which radiates absorbing light having a radiation peak wavelength substantially equal to or shorter than the radiation wavelength of each second index signal phosphor layer. Arranged between each second collecting plate and the rear plate is a filter, which transmits the index signal light from the second index signal phosphor layer and shades the index signal light from the first index signal phosphor layer.
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申请公布号 |
US5952767(A) |
申请公布日期 |
1999.09.14 |
申请号 |
US19970861225 |
申请日期 |
1997.05.21 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KUWABARA, YUJI;TAKAHASHI, TORU;KAMOHARA, EIJI |
分类号 |
H01J29/89;H01J9/34;H01J29/34;H01J31/00;H01J31/20;H04N3/16;H04N9/24;(IPC1-7):H01J31/00 |
主分类号 |
H01J29/89 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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