Infrared observation system

摘要

An infrared observation system comprises: a light source unit for generating illumination light for irradiating light including infrared light of a long wavelength exceeding at least a 1000-nm wavelength upon a living body tissue inside or outside the body in a broadband or a narrowband; an infrared image capturing unit for capturing an image using infrared light of a wavelength band exceeding 1000 nm in the light reflected from or transmitted through at the living body tissue; and an identifying unit for facilitating identification between a case in which living body tissue is blood or a blood vessel, and a case in which the living body tissue is other living body tissue, using the difference of moisture extinction properties in the wavelength band exceeding a wavelength of 1000 nm.