And LED15b for outputting the first special light, and LED15g for outputting the second special light in a wavelength band different from the first special light, the body-insertable device that is introduced into the subject through the second and the first special light an illumination unit 15 having a matching light distribution matching unit 15y light distribution of the special light, an illumination control circuit 15A for illuminating the subject 900 by driving the lighting unit 15, and imaging the subject 900 I comprises an imaging unit 14.被検体内に導入される被検体内導入装置は、第1特殊光を出力するLED15bと、第1特殊光と異なる波長帯域の第2特殊光を出力するLED15gと、第1特殊光と第2特殊光との配光を整合する配光整合部15yと、を有する照明部15と、照明部15を駆動して被検体900内を照明する照明制御回路15Aと、被検体900内を撮像する撮像部14と、を備える。
