Patent ID: 8339486

Claim:
A solid-state imaging apparatus comprising: a solid-state imaging device having a first face incident with light and converting the light into image information; a filter arranged on and in contact with the first face of the solid-state imaging device; and a light source, the light source being composed of: a first light source generating a first wavelength band light, and a second light source generating a second wavelength band light, said second wavelength band light is in a longer wavelength side relative to the first wavelength band, wherein the filter is composed of a first filter allowing the first wavelength band light to be transmitted therethrough; and a second filter allowing the second wavelength band light to be transmitted therethrough, said first wavelength band light being different from said second wavelength band light, wherein the filter is provided between the solid-state imaging device and an object to be imaged, and light from the first light source is introduced into the first filter by way of the object to be imaged, and light from the second light source is introduced into the second filter by way of the object to be imaged; and a difference calculation unit configured to calculate a difference image between a first image being an image of the object to be imaged obtained by the first wavelength band light transmitting through the first filter and then entering the first face and a second image being an image of the object to be imaged obtained by the second wavelength band light transmitting through the second filter and then entering the first face.