| 摘要 |
An image sensor 20 A contains a photodiode array portion 21 , a signal processor 22 , a switching instruction part 23 A and a control part 24 A. Each switch SW<SUB>n </SUB>is provided between the corresponding photodiode PD<SUB>n </SUB>and the common output line L, and instructed to carry out the switching operation by the switching instruction part 23 A so as to be closed, whereby the charges accumulated in the junction capacitance portion of the photodiode PD<SUB>n </SUB>are output to the common output line L. On the basis of the instruction from the switching instruction part 23 A, the N switches SW<SUB>1 </SUB>to SW<SUB>N </SUB>carry out the switching operation so that the N switches SW<SUB>1 </SUB>to SW<SUB>N </SUB>are set to the close state in the different periods and the interval at which each switch SW<SUB>n </SUB>is set to the close state is equal to an integral multiple of a base period. As described above, the charge accumulation time of each of the N photodiodes PD<SUB>1 </SUB>to PD<SUB>N </SUB>is set to an integral multiple of the base period.
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