The capsule endoscope 10 according to the present invention includes a white light source 12a and a special light source 12b that generates special light having a wavelength distribution different from the wavelength distribution of white light, and generates white light and special light. An imaging unit that has a plurality of pixel groups composed of a plurality of pixels and a light source 12 that can be switched in time series to irradiate the subject, and that receives light from the subject to the plurality of pixels and generates an imaging signal 11, the pixel group is sequentially exposed based on the imaging control signal, and the imaging control unit 13 a that outputs the imaging control signal for controlling the imaging unit 11 so that the imaging unit 11 is sequentially exposed and sequentially read out the imaging signal. A light source control unit 13b that outputs a light source control signal for controlling the light source 12 so as to switch between irradiation of white light and irradiation of special light in accordance with the timing to be performed.本発明にかかるカプセル型内視鏡１０は、白色光光源１２ａと、白色光の波長分布と異なる波長分布を有する特殊光を発生する特殊光光源１２ｂとを有し、白色光と特殊光とを時系列的に切り換えて被検体に照射可能である光源１２と、複数の画素から構成される画素群を複数有し、被検体からの光を複数の画素に受光し撮像信号を生成する撮像部１１と、画素群ごとに、順次露光し、かつ、撮像信号を順次読み出すように撮像部１１を制御する撮像制御信号を出力する撮像制御部１３ａと、撮像制御信号に基づき、画素群が順次露光されるタイミングに応じて白色光の照射と特殊光の照射とを切り換えるように光源１２を制御する光源制御信号を出力する光源制御部１３ｂとを備える。
