发明名称 |
Color image pickup apparatus with light source distinguishing function |
摘要 |
An image pickup system includes photodiodes with color filters. A first color filter group includes visual light color filters, and a second color filter group includes a long red color filter at 640 nm or longer or a color filter at 580 nm and one of the visual light color filters. An infrared cut filter covers all the filters. A control circuit includes a fluorescent lamp distinguishing circuit for distinguishing a fluorescent lamp from other illuminating light sources by a ratio of an output signal from the photodiode with the long red filter to an output signal from the photodiodes with the visual light color filters; and a white balance control circuit for adjusting a white balance so as to match the illuminating light source distinguished by the fluorescent lamp distinguishing circuit.
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申请公布号 |
US2003058357(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
US20020244425 |
申请日期 |
2002.09.17 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
AOTSUKA YASUO |
分类号 |
G02B5/20;G02B5/22;G02B5/26;H04N9/04;H04N9/07;(IPC1-7):H04N5/335 |
主分类号 |
G02B5/20 |
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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