An actuator controlling device that controls an actuator based on signals acquired from a photodetector (151, 152), said photodetector (151, 152) detecting laser light emitted from a laser light source in a target direction by driving the actuator having a reflecting part, the actuator including a drive unit that causes the reflecting part to move, the actuator controlling device comprising: a waveform generating unit configured to generate a voltage waveform for driving the drive unit; a driving amplifier (121, 123) configured to amplify the voltage waveform generated by the waveform generating unit; a power supply unit configured to supply power to the driving amplifier (121, 123); and a controller configured to acquire detection signals from the photodetector (151, 152), characterized in that: the controller is further configured to control, based on the acquired detection signals, voltage (Vhm, Vhs) to be supplied from the power supply unit to the driving amplifier (121, 123); wherein the drive unit includes a first drive unit configured to cause the reflecting part to rotate about a first axis and a second drive unit configured to cause the reflecting part to rotate about a second axis, the driving amplifier (121, 123) includes a first driving amplifier configured to apply voltage to the first drive unit and a second driving amplifier configured to apply voltage to the second drive unit, the power supply unit includes a first power supply unit configured to supply first voltage (Vhm) to the first driving amplifier and a second power supply unit configured to supply second voltage (Vhs) to the second driving amplifier, and the controller is further configured to: control the first power supply unit and the second power supply unit independently, and optimally set each of the first voltage (Vhm) and the second voltage (Vhs) based on the acquired photodetector detection signals by having the actuator actually driven, to reduce power consumption. a waveform generating unit configured to generate a voltage waveform for driving the drive unit; a driving amplifier (121, 123) configured to amplify the voltage waveform generated by the waveform generating unit; a power supply unit configured to supply power to the driving amplifier (121, 123); and a controller configured to acquire detection signals from the photodetector (151, 152), characterized in that: the controller is further configured to control, based on the acquired detection signals, voltage (Vhm, Vhs) to be supplied from the power supply unit to the driving amplifier (121, 123); wherein the drive unit includes a first drive unit configured to cause the reflecting part to rotate about a first axis and a second drive unit configured to cause the reflecting part to rotate about a second axis, the driving amplifier (121, 123) includes a first driving amplifier configured to apply voltage to the first drive unit and a second driving amplifier configured to apply voltage to the second drive unit, the power supply unit includes a first power supply unit configured to supply first voltage (Vhm) to the first driving amplifier and a second power supply unit configured to supply second voltage (Vhs) to the second driving amplifier, and the controller is further configured to: control the first power supply unit and the second power supply unit independently, and optimally set each of the first voltage (Vhm) and the second voltage (Vhs) based on the acquired photodetector detection signals by having the actuator actually driven, to reduce power consumption. the controller is further configured to control, based on the acquired detection signals, voltage (Vhm, Vhs) to be supplied from the power supply unit to the driving amplifier (121, 123); wherein the drive unit includes a first drive unit configured to cause the reflecting part to rotate about a first axis and a second drive unit configured to cause the reflecting part to rotate about a second axis, the driving amplifier (121, 123) includes a first driving amplifier configured to apply voltage to the first drive unit and a second driving amplifier configured to apply voltage to the second drive unit, the power supply unit includes a first power supply unit configured to supply first voltage (Vhm) to the first driving amplifier and a second power supply unit configured to supply second voltage (Vhs) to the second driving amplifier, and the controller is further configured to: control the first power supply unit and the second power supply unit independently, and optimally set each of the first voltage (Vhm) and the second voltage (Vhs) based on the acquired photodetector detection signals by having the actuator actually driven, to reduce power consumption. control the first power supply unit and the second power supply unit independently, and optimally set each of the first voltage (Vhm) and the second voltage (Vhs) based on the acquired photodetector detection signals by having the actuator actually driven, to reduce power consumption.