The imaging device includes an imaging unit producing images, and a control unit controlling the imaging unit. The imaging device further comprises: a reference clock unit generating a reference clock and a signal input/output unit provided between the imaging unit and the control unit and inputting and outputting signals in synchronization with the reference clock generated by the reference clock unit. The control unit comprises: generating means generating a plurality of control signals for controlling the imaging unit and generating an extraction timing of extracting measurement signals from the imaging unit transmitting means transmitting the plural control signals generated by the generating means to the imaging unit via the signal input/output unit in synchronization with the reference clock receiving means receiving measurement signals from the imaging unit via the signal input/output unit in synchronization with the reference clock and counting reception times of the measurement signals and extraction means extracting the measurement signal when the reception times of the measurement signals received by the receiving means agrees with the extraction timing generated by the generating means.
