Patent ID: 8334918

Claim:
A solid-state image pickup device comprising: a plurality of photoelectric converters each having a rectangular shape as viewed in an energy beam incident direction, the photoelectric converters being aligned in a shorter side direction of the rectangular shape, and the photoelectric converters forming a line sensor; a plurality of resistive electrodes provided on a surface side of the respective photoelectric converters, each of the resistive electrodes receiving a voltage between two ends of the resistive electrode, a direction between the two ends crossing the shorter direction; a transferring section which is provided on one side of the photoelectric converters in the direction crossing a predetermined direction, acquires charges generated in the photoelectric converters and transfers the charges in the predetermined direction; an unnecessary charge discharging drain which is provided adjacent to the photoelectric converter along the direction crossing the predetermined direction and discharges unnecessary charges generated in the photoelectric converter from the photoelectric converter; and an unnecessary charge discharging gate which is provided between the photoelectric converter and the unnecessary charge discharging drain and selectively performs cutting-off and release of the flow of unnecessary charges from the photoelectric converter to the unnecessary charge discharging drain.