Endoscopic diagnosis system

An endoscopic diagnosis system, comprising:

• a light source for simultaneously emitting at least two excitation light having different central wavelengths for exciting at least two autofluorescent substances to generate autofluorescence, the at least two autofluorescent substances containing a first autofluorescent substance whose autofluorescence intensity is strong in a lesion and weak in a normal region and a second autofluorescent substance whose autofluorescence intensity is strong in a normal region and weak in a lesion;
• color filters having spectral transmission characteristics that block the at least two excitation light and transmit the autofluorescence generated from the at least two autofluorescent substances;
• image sensor for imaging autofluorescence generated, as the at least two excitation light simultaneously emitted from the light source illuminate a subject's region under observation, from the first and second autofluorescent substances contained in the region under observation and dispersed by the color filters to acquire first and second autofluorescence images;
• and
• an image processor for image-processing the first and second autofluorescence images acquired by the image sensor and displaying the image-processed first and second autofluorescence images on a monitor.