ENDOSCOPE DEVICE

摘要

An endoscope device includes: a light source that emits white illumination light including rays of light of red, green, and blue wavelength bands, or emits narrow band illumination light having narrow band light included in each of the blue and green wavelength bands; an image sensor that has pixels arranged in a matrix pattern and performs photoelectric conversion on light received by each pixel to generate an electric signal; and a color filter having filter units arranged on a light receiving surface of the image sensor, each of the filter units being formed of blue filters for transmitting the light of the blue wavelength band, green filters for transmitting the light of the green wavelength band, and red filters for transmitting the light of the red wavelength band, the number of the blue filters and the number of the green filters being larger than the number of the red filters.

主权项

1. An endoscope device comprising:
a light source unit configured to emit white illumination light including rays of light of red, green, and blue wavelength bands, or to emit narrow band illumination light having narrow band light included in each of the blue and green wavelength bands; an image sensor that has a plurality of pixels arranged in a matrix pattern and is configured to perform photoelectric conversion on light received by each of the plurality of pixels to generate an electric signal; a color filter having a plurality of filter units arranged on a light receiving surface of the image sensor, each of the filter units being formed of blue filters for transmitting the light of the blue wavelength band, green filters for transmitting the light of the green wavelength band, and red filters for transmitting the light of the red wavelength band, the number of the blue filters and the number of the green filters being larger than the number of the red filters; a luminance component pixel selecting unit configured to select a luminance component pixel for receiving light of a luminance component, from the plurality of pixels according to types of illumination light emitted by the light source unit; and a demosaicing processing unit configured to generate a color image signal having a plurality of color components based on the luminance component pixel selected by the luminance component pixel selecting unit.