Patent ID: 8007433
Filing Date: 2011-08-30
Classification: A61B,G02B

Abstract:
1. An electronic endoscope comprising: a video-scope that has a first image sensor and a second image sensor; a light supplier that selectively irradiates white light and excitation-light on an observed portion; a first color filter that is positioned on said first image sensor, is disposed along a light-path oriented toward said first image sensor, and has spectral transmitting characteristics that transmit light having a first wavelength range corresponding to blue color; a second color filter that is positioned on said second image sensor, is disposed along a light-path oriented toward said second image sensor, and has spectral transmitting characteristics that transmit light having a second wavelength range corresponding to green and red colors; a first signal processor that generates normal image video signals corresponding to a normal observation image on the basis of image-pixel signals that are read from said first and second image sensors by the white light; a second signal processor that generates narrow-band video signals corresponding to a narrow-band image on the basis of image-pixel signals that are read from said first image sensor by reflected light of the excitation-light; and a third signal processor that generates auto-fluorescent video signals corresponding to an auto-fluorescent image on the basis of image-pixel signals that are read from said second image sensor by auto-fluorescent light emitted from the observed portion.