Patent ID: 7658710

Claim:
An endoscope system, comprising: a light source for supplying light of a first wavelength band in a narrow band which includes 590 nm to 610 nm, light of a second wavelength band in a narrow band which substantially includes 540 nm to 560 nm and light of a third wavelength band which includes 390 nm to 445 nm for exciting fluorescence of about 520 nm; an excitation light cut filter for transmitting light of a wavelength greater than 470 nm of the light of the first wavelength band, the light of the second wavelength band and the light of the third wavelength band reflected from an object and the fluorescence excited by the light of the third wavelength band; an image capturing unit for capturing the light transmitted by the excitation light cut filter, thereby outputting a first wavelength band signal in the narrow band captured with reflected light of the light in the first wavelength band, a second wavelength band signal in the narrow band captured with reflected light of the light in the second wavelength band, a fluorescence wavelength band signal by the fluorescence excited by the light in the third wavelength band; a first frame memory for inputting and storing the first wavelength band signal; a second frame memory for inputting and storing the second wavelength band signal; a third frame memory for inputting and storing the fluorescence wavelength band signal; a monitor for displaying an image of a subject; a first output end for outputting as a first color signal to the monitor; a second output end for outputting as a second color signal to the monitor; a third output end for outputting as a third color signal to the monitor; and an image processor for receiving signals from the first frame memory, the second frame memory and the third frame memory respectively, the image processor selecting among the first output end, the second output end and the third output end for outputting the received signals to the monitor.