PROBLEM TO BE SOLVED: To support a doctor or the like to easily grasp an affected part by generating and outputting a clearer fluorescent image of an observation site to which a fluorescent reagent is administered. SOLUTION: In a three-plate camera, a first reflective film that reflects IR light out of light from an observation site is formed, and a first prism that receives IR light to a first image sensor and a first reflective film are transmitted. A second reflecting film that reflects the specific wavelength band light and transmits visible light among the first transmitted light is formed, and the second prism that receives the specific wavelength band light to the second image sensor and the second reflecting film are formed. Based on the third prism that allows the third image sensor to receive the transmitted visible light and the imaging outputs of the first image sensor, the second image sensor, and the third image sensor, the first video signal and the second image signal of the observation site are used. It includes a video signal processing unit that generates a video signal and a third video signal, synthesizes the first video signal, the second video signal, and the third video signal, and outputs the light signal to the monitor. [Selection diagram] Fig. 3【課題】蛍光試薬が投与された観察部位のより鮮明な蛍光画像を生成して出力し、医師等による患部の容易な把握を支援する。【解決手段】３板式カメラは、観察部位からの光のうちＩＲ光を反射する第１反射膜が形成され、ＩＲ光を第１イメージセンサに受光させる第１プリズムと、第１反射膜を透過した第１透過光のうち特定波長帯光を反射しかつ可視光を透過する第２反射膜が形成され、特定波長帯光を第２イメージセンサに受光させる第２プリズムと、第２反射膜を透過した可視光を第３イメージセンサに受光させる第３プリズムと、第１イメージセンサ、第２イメージセンサおよび第３イメージセンサのそれぞれの撮像出力に基づいて、観察部位の第１映像信号、第２映像信号、第３映像信号を生成し、第１映像信号、第２映像信号および第３映像信号を合成してモニタに出力する映像信号処理部と、を備える。【選択図】図３
