Endoscope system and light source device
AssigneeFUJIFILM Corporation
InventorMasayuki KURAMOTO
Life of this patent
Estimating the term…
Abstract
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. In 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 in such a range as to make the light amount of the violet narrowband light Vn larger than the light amount of the green narrowband light Gn, and make a signal value of the second mixed pixel higher than a signal value of the first mixed pixel.
Claims16
An endoscope system comprising:
- a complementary color type imaging device from which a first mixed pixel and a second mixed pixel are read out, 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 signal processing unit for imaging said first narrowband light by using a signal value of said first mixed pixel, and imaging said second narrowband light by using a signal value of 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, said light source device setting the light amount ratio between said first narrowband light and said second narrowband light such that the light amount of said first narrowband light is made larger than the light amount of said second narrowband light and said signal value of said second mixed pixel is made higher than said signal value of said first mixed pixel.
A light source device comprising:
- a light source for simultaneously producing first narrowband light and second narrowband light having a longer wavelength than said first narrowband light and supplying said first and second narrowband light to an endoscope;
- and
- a light source controller for controlling said light source, wherein
- a complementary color type imaging device from which a first mixed pixel and a second mixed pixel are read out is connectable to said light source device, and said first mixed pixel and said second mixed pixel sense both of said first narrowband light and said second narrowband light;
- said light source device simultaneously applies said first and second narrowband light to an observation object;
- and
- said light source device sets the light amount ratio between said first narrowband light and said second narrowband light, such that the light amount of said first narrowband light is made larger than the light amount of said second narrowband light, and said signal value of said second mixed pixel is made higher than said signal value of said first mixed pixel.
Dependencies are inferred from the claim text.