ENDOSCOPE SYSTEM AND METHOD FOR OPERATING THE SAME

摘要

A V-LED emits violet narrowband light. A G-LED emits green light. A filter limits wavelengths of the green light to pass green narrowband light. The V-LED and the G-LED are turned on alternately to apply the violet narrowband light and the green narrowband light alternately to an object. A complementary color image sensor has a Cy pixel and an Mg pixel, which are sensitive to both the violet narrowband light and the green narrowband light. The complementary color image sensor images the object under illumination of the violet narrowband light to output a first image signal and images the object under illumination of the green narrowband light to output a second image signal. Based on the first and second image signals, a special image, in which surface structure (surface blood vessels) and subsurface structure (subsurface blood vessels) are isolated from each other, is produced and displayed on a monitor.

主权项

1. An endoscope system comprising:
an emission section having a first semiconductor light source for emitting first illumination light, a second semiconductor light source for emitting light of a specific wavelength range, and a narrowband filter for passing second illumination light of the light of the specific wavelength range, the first illumination light being narrowband light passing through a first transmission distance in a depth direction from a surface of an observation object, the second illumination light passing through a second transmission distance longer than the first transmission distance, the emission section applying the first illumination light and the second illumination light sequentially to the observation object; a complementary color image sensor having a specific pixel sensitive to the first and second illumination light, the complementary color image sensor imaging the observation object under the first illumination light and the observation object under the second illumination light, and outputting an image signal; an image processing section for producing a special image based on the image signal; and a display section for displaying the special image.