| 摘要 |
PROBLEM TO BE SOLVED: To improve the reproducibility of a position relation on a light source, a foreign matter and an opening part, to eliminate the need of a complicated operation for using an optical microscope and to highly precisely evaluate PRNU. SOLUTION: In the opening part 1 of the line sensor, a dummy part 3 where a light shielding part 5 is disposed in a part of pixels is arranged in addition to a valid part 4 constituted of the pixels for detecting a picture.
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