Imaging apparatus and endoscope apparatus using the same

An imaging apparatus comprising:

• an image forming optical system for forming an object image;
• an imaging means having a sensitivity to a wavelength range ranging from a visible range to a range other than the visible range and using a solid state imaging device converting an image formed by said image forming optical system into an electric signal;
• a wavelength range dividing means for dividing an illuminating light into a plurality of wavelength ranges within a range in which said imaging means has a sensitivity and one of the wavelength ranges having a sensitivity to a wavelength range of high absorbance of pigment injected into a living body;
• a selecting means for selecting one or more wavelength range divided by said wavelength range dividing means;
• and
• a signal processing means for processing output signals of said imaging means corresponding to an illuminating light of each wavelength range selected by said selecting means by allotting said output signals to respective different color signals so as to process video signals.