PROBLEM TO BE SOLVED: To provide a biological observation system capable of generating, when narrow-band light is radiated on a subject, a white light image of a color tone suitable for observation.SOLUTION: The biological observation system comprises: a light source unit that is capable of radiating, within a predetermined wavelength band, narrow-band light having a plurality of wavelength bands corresponding to the absorption property of hemoglobins in blood and wide-band light outside the predetermined wavelength band an imaging unit that receives light from the subject on which light from the light source unit is radiated and generates an imaging signal a control unit that performs control for switching between a first mode of sequentially generating the narrow-band light for each of the plurality of the wavelength bands and a second mode of simultaneously generating the narrow-band light and the wide-band light a light source drive unit that drives in the seconde mode the light source unit so as to irradiate the subject with the narrow-band light and the wide-band light, and light in the predetermined wavelength band and not in the wavelength band in which the narrow-band light has the largest intensity and an image generation unit that generates an image by using the imaging signal.COPYRIGHT: (C)2016,JPO&INPIT【課題】狭帯域光が被写体に照射された際に、観察に適した色調の白色光画像を生成可能な生体観察システムを提供する。【解決手段】生体観察システムは、所定の波長帯域内において、血中ヘモグロビンの吸収特性に応じた複数の波長帯域を有する狭帯域光と、所定の波長帯域外における広帯域光と、を照射可能な光源部と、光源部からの光が照射された被写体からの光を受光して撮像信号を生成する撮像部と、狭帯域光を複数の波長帯域毎に順次発生させる第1のモード、または、狭帯域光及び広帯域光を同時に発生させる第2のモードのいずれかに切り替えるための制御を行う制御部と、第2のモード時に、狭帯域光及び広帯域光と、所定の波長帯域内かつ狭帯域光における最大の強度となる波長帯域以外の光と、を被写体に照射させるように光源部を駆動する光源駆動部と、撮像信号を用いて画像を生成する画像生成部と、を有する。【選択図】図1
