| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sensor suppressed in an increase in configuration.SOLUTION: An optical sensor having a photoelectric conversion element (10) for storing photo-electrically converted charges is configured to output a detection signal corresponding to charge amounts photo-electrically converted in a first predetermined time. The optical sensor includes: a power storage unit (20) for storing the photo-electrically converted charges; and a control part (30) for controlling the power storage unit. The power storage unit includes: an electronic element (21) for storing charges; and a switch (22), and the electronic element and the switch are serially connected between the photoelectric conversion element and a ground. The control part includes: a non-volatile memory (31) in which a relation between a switch which is put in an ON state and a capacitance to be determined by the electronic element and the photo-electric conversion element serially connected to the switch put in the ON state is recorded; and a signal generation part (32) for outputting an ON signal on the basis of the relation between the switch put in the ON state and the capacitance recorded in the non-volatile memory. |
