ENDOSCOPE SYSTEM AND LIGHT SOURCE DEVICE

摘要

Violet narrowband light Vn and green narrowband light Gn produced by a light source device are supplied to a complementary color type endoscope, and simultaneously applied to an observation object. From a complementary color type imaging device, first mixed pixels and second mixed pixels, which sense both of the violet narrowband light Vn and the green narrowband light Gn, are read out. The light amount ratio Z of the violet narrowband light Vn to the green narrowband light Gn is set within a predetermined range based on an optimal light amount ratio Z0 at which the proportion P1 of a violet narrowband light Vn component within a first mixed pixel signal becomes equal to the proportion P2 of a green narrowband light Gn component within a second mixed pixel signal. This improves color separability of an endoscope system.

主权项

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 and second narrowband light having a longer wavelength than said first narrowband light, 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, the 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 the proportion of a first narrowband light component within said first mixed pixel signal being equal to the proportion of a second narrowband light component within said second mixed pixel signal.