PROBLEM TO BE SOLVED: To acquire desired tissue information on a biological tissue in a clearer state suitable for diagnosis in observing a biological tissue with white light and special light.SOLUTION: An illumination device for an endoscope includes: a first light source 51 using a semiconductor light-emitting device as a light emitting source a second light source 53 using a semiconductor light-emitting device with a light-emitting wavelength different from that of the first light-emitting source 51 as a light emitting source a wavelength conversion member 57 for emitting light in excitation by emission light from at least one of the first light source 51 and the second light source 53 and light amount ratio changing means 55 for changing the ratio of the emission light from the first light source 51 to the emission light from the second light source 53. By generating the emission light from the first light source 51 and the emission light from the second light source 53 arbitrarily, illumination light suitable for diagnosis according to the absorption property and scattering property of a biological tissue can be provided, thereby enabling desired tissue information on the biological tissue to be acquired in a clearer state.COPYRIGHT: (C)2015,JPO&INPIT【課題】白色光や特殊光による生体組織の観察時に、生体組織の所望の組織情報を、診断に適したより明瞭な状態で取得する。【解決手段】半導体発光素子を発光源とする第1の光源51と、第1の光源51とは異なる発光波長の半導体発光素子を発光源とする第2の光源53と、第1の光源51、第2の光源53の少なくとも一方からの出射光により励起発光する波長変換部材57と、第1の光源51からの出射光と第2の光源53からの出射光との光量比を変更する光量比変更手段55と、を備えることで、第1の光源51からの出射光と第2の光源53からの出射光を任意に発生させて、生体組織の吸収特性および散乱特性に応じた診断に適した照明光を提供できる。これにより、生体組織の所望の組織情報が、より明瞭な状態で取得可能となる。【選択図】図2
