| 摘要 |
A fluorescent endoscope apparatus in which the fluorescent light, which becomes noise, emitted from the photographic element propagating the autofluorescent light emitted from a living-tissue subject is reduced, and by which it is possible to clearly distinguish between normal and diseased tissues. The fluorescent endoscope apparatus has a stimulating light projecting unit for irradiating a living-tissue subject with stimulating light, and an optical element for propagating the autofluorescent light emitted from the living tissue subject that has been irradiated by stimulating light. It also has a photographing element, which is formed of the optical element, for photographing the autofluorescent light emitted by the living tissue subject irradiated by the stimulating light. The optical element is structured so as to satisfy the condition expressed by the formula: the strength of the autofluorescent light of normal tissue>=the strength of the autofluorescent light of the optical elementx10<4>.
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