A control device is disclosed that includes a processor configured to: receive a signal from an imaging core, the imaging core including an optical transceiver and an ultrasound transceiver； determine whether the imaging core is in a state where the ultrasound transceiver can properly execute transmission and reception, based on at least one of the signal from the optical transceiver and the signal from the ultrasound transceiver which are received from the imaging； and control execution of an optical path length adjustment for imaging with the optical transceiver when the ultrasound transceiver can properly execute the transmission and reception.
