Patent ID: 9509964
Filing Date: 2016-11-29
CPC Classification: A61B,H04N

Claim Text:
1. An endoscope system comprising: a complementary color type imaging device having a first mixed pixel and a second mixed pixel, each of said first mixed pixel and said second mixed pixel sensing both of first narrowband light having a center wavelength in a blue or violet wavelength range and second narrowband light having a center wavelength in a green wavelength range, a first mixed pixel signal being read from said first mixed pixel, a second mixed pixel signal being read from said second mixed pixel; and a lighting section having a light source device for simultaneously applying said first and second narrowband light to an observation object, a light amount ratio of said first narrowband light to said second narrowband light being set within a predetermined range based on an optimal light amount ratio, at said optimal light amount ratio a proportion of a first narrowband light component within said first mixed pixel signal being equal to a proportion of a second narrowband light component within said second mixed pixel signal, wherein said light amount ratio is set at a value “Z” satisfying expression (a) as follows: wherein, Z