DRIVE DEVICE AND SPATIAL INFORMATION DETECTOR DEVICE EMPLOYING SAME

摘要

A drive device comprises an impressed voltage controller unit that carries out a transfer process that controls a charge-coupled device and transfers an electric charge. The impressed voltage controller unit switches a voltage that is applied to an array of transfer electrodes, in sequence from a first end side to a second end side of the array of transfer electrodes of the charge-coupled element, from a control voltage that generates the potential well to a reference voltage that annihilates the potential well. The impressed voltage controller unit further comprises a control circuit that generates a drive signal on the basis of the clock signal, and a drive circuit that selectively applies the control voltage and the reference voltage to the transfer electrodes in accordance with the drive signal. With respect to a first drive signal, which is the drive signal that corresponds to one transfer electrode of adjacent transfer electrodes, the control circuit delays a second drive signal, which is the drive signal that corresponds to the other transfer electrode of the adjacent transfer electrodes, and sets the phase difference between the first drive signal and the second drive signal to a value corresponding to a prescribed time that is shorter than the period of the clock signal.