An endoscope system includes an imaging unit (11) for imaging a subject and outputting an electric signal, a processor (21) for performing signal correction on the electric signal, image processing for performing image processing on the electric signal after signal correction And an electric signal is transmitted to at least one of the imaging unit (11) and the processor (21) and / or between the processor (21) and the image processing unit (31) , An E / O converter (51) for converting the optical signal into an optical signal, an optical fiber (52) for transmitting the optical signal, and an O / E converter (53) for converting the optical signal into an electric signal.内視鏡システムは、被検体を撮像して電気信号を出力する撮像部(11)と、電気信号に信号補正を行うプロセッサ(21)と、信号補正後の電気信号に画像処理を行う画像処理部(31)と、を備え、撮像部(11)とプロセッサ(21)との間と、プロセッサ(21)と画像処理部(31)との間と、の少なくとも一方に、電気信号を光信号に変換するE/O変換器(51)と、光信号を伝送する光ファイバ(52)と、光信号を電気信号に変換するO/E変換器(53)と、が配設されている。
