Patent attributes
A distance measurement apparatus includes a light emission circuit that includes a switch, a capacitor, a light-emitting element, and a protection element. The light emission circuit charges and discharges the capacitor by opening and closing the switch based on a light emission control signal, and enables the light-emitting element to emit light using electric power during discharge by the capacitor. The light emission circuit is configured such that a parasitic inductance of a first circuit is greater than a parasitic inductance of a second circuit, where the first circuit is a circuit in which the switch, the capacitor, and the light-emitting element are connected in series and in a ring shape, and the second circuit is a circuit in which the switch, the capacitor, and the protection element are connected in series and in a ring shape.
