Patent ID: 9383313
Filing Date: 2016-07-05
CPC Classification: G01N,G02C

Claim Text:
1. A transmitted light observation apparatus comprising: a light source that generates first and second beams of light including light of a prescribed wavelength; a holder that holds a first test material and a second test material arranged respectively in optical paths of the first and second beams of light generated by the light source; a reflective surface that reflects at least a portion of the light transmitted respectively through the first test material and the second test material; and a transparent material that is arranged in the optical paths of the first and second beams of light transmitted respectively through the first test material and the second test material, the transparent material being transparent with respect to visible light and including a light scattering component, dispersed within the transparent material, that scatters the light of the prescribed wavelength so as to cause the optical paths of the first and second beams of light transmitted respectively through the first test material and the second test material to become visible as lines in the transparent material to an observer outside the first and second beams of light, wherein transmittance of the first test material for the light of the prescribed wavelength is different from transmittance of the second test material for the light of the prescribed wavelength.