发明名称 |
Method for detecting deterioration of an exposure lamp |
摘要 |
A reference white board is illuminated by an exposure lamp, and an image at a region illuminated is converted into an image signal by a photoelectric conversion device. The image signal output from the photoelectric conversion device is amplified at a predetermined amplification factor. By comparing the level of the amplified image signal with a reference value, deterioration of the exposure lamp is detected.
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申请公布号 |
US2005206976(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20040804205 |
申请日期 |
2004.03.19 |
申请人 |
TOSHIBA TEC KABUSHIKI KAISHA |
发明人 |
HAKAMADA SUSUMU |
分类号 |
H04N1/00;H04N1/04;(IPC1-7):H04N1/04 |
主分类号 |
H04N1/00 |
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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