Patent ID: 8773522
Filing Date: 2014-07-08
Classification: A61B

Abstract:
1. An endoscope apparatus for performing signal processing to generate a video signal based on a signal outputted from an image pickup section which is mounted to an endoscope and includes a color separation optical filter to perform color image pickup, the endoscope apparatus comprising: a band-limited normal illumination light generation section for generating, by one filter, a discrete band-limited normal illumination light which concurrently includes only a light limited in visible light range of red to within a bandwidth with a predetermined light amount, a light limited in visible light range of green to within a bandwidth with a predetermined light amount, and a light limited in visible light range of blue to within a bandwidth with a predetermined light amount, in a normal-band light observation mode, the bandwidths of the light limited in visible light range of red, the light limited in visible light range of green and the light limited in visible light range of blue having no overlap in full widths at half maximum of relative intensities; and a narrow-band light generation section for generating at least one discrete narrow-band light whose bandwidth is narrower that the bandwidth limited by the band-limited normal illumination light generation section, in a narrow-band light observation mode.