Patent ID: 8780346

Claim:
A spectroscopic image capturing apparatus comprising: a light source device that includes: a light source, a first lens group that receives light from the light source and that outputs a first parallel light, and a first polarizer that receives the first parallel light from the first lens group and that outputs a first circular polarized light toward an object; and an imaging device that optically communicates with the light source device, the imaging device includes: a second polarizer that receives a circular polarized reflection light, which results from reflecting the first circular polarized light by the object, and that outputs a second circular polarized light, a second lens group that receives the second circular polarized light from the second polarizer and that outputs a second parallel light, an optical filter that receives the second parallel light from the second lens group and that outputs an analyzed light having a desired wavelength, and an imaging unit that receives the analyzed light from the optical filter and that produces image data, wherein the first circular polarized light has a first circular polarization direction, the second circular polarized light has a second circular polarization direction, the second circular polarization direction is the same direction as the first circular polarization direction, the circular polarized reflection light has a third circular polarization direction, the third circular polarization direction is a different direction than the first and second circular polarization directions, and the optical filter is an etalon filter.