| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical sensor capable of suppressing an increase in the number of terminals of a light-receiving element and being driven at a low voltage.SOLUTION: An optical sensor 1 is provided with a light-receiving element 11 including a light-emitting element LED and a photodiode PD. The light-receiving element 11 includes: a terminal T1 which is connected to a power supply line via an external resistor RL; a terminal T2 which is connected to the power supply line via the light-emitting element LED; and a terminal T3 to which a fixed potential (ground potential) is imparted. The terminals T2, T3 are connected by a resistor R3, and a voltage of the terminal T3 is set to be 0.3 V. |
