Patent ID: 9417182
Filing Date: 2016-08-16
CPC Classification: G01N

Claim Text:
1. A prism member for use in transmission spectrometry of an object to be measured employing a terahertz wave, the prism member comprising: an entrance surface for arranging a terahertz-wave generator for generating a terahertz wave in response to pump light incident thereon; an arrangement part for arranging the object; an exit surface for arranging a terahertz-wave detector for detecting a correlation between the terahertz wave transmitted through the object in the arrangement part and probe light; a first optical surface for collimating or condensing the terahertz wave incident thereon from the entrance surface toward the arrangement part; and a second optical surface for condensing the terahertz wave transmitted through the arrangement part toward the exit surface; wherein the arrangement part forms a depression adapted to be filled with a liquid incapable of dissolving the object therein, and wherein the depression includes a first refractive surface for refracting the terahertz wave from the first optical surface toward the object and a second refractive surface for refracting the terahertz wave transmitted through the object toward the second optical surface.