Electronic endoscope apparatus

An electronic endoscope apparatus, comprising:

• a light source for irradiating white light on an observation target body;
• a color imaging device for imaging the observation target image receiving the white light;
• a first color conversion circuit for converting Y (luminance)/C (chrominance difference) signals outputted from the color imaging device to RGB three color image signals;
• a spectroscopic image generation circuit for generating a spectroscopic image within a predetermined wavelength range from the RGB three color image signals;
• a second color conversion circuit for converting the RGB three color image signals representing the spectroscopic image to Y/C signals;
• a light amount regulation means for regulating the amount of white light irradiated on the observation target body from the light source;
• and
• a light amount control circuit for controlling the light amount regulation means based on the luminance information provided by the Y/C signals outputted from the second color conversion circuit to set the brightness of the spectroscopic image within a predetermined range.