Patent ID: 8699031
Filing Date: 2014-04-15
Classification: G01N

Abstract:
1. An optical measurement device adapted to measure characteristics of a measurement targeted fluid based on an inspection light transmitted through the measurement targeted fluid, comprising: a cell having an internal space for accommodating or allowing the measurement targeted fluid to flow therein and provided with a pair of through holes opposing each other for transmitting the inspection light through the internal space, wherein each of the through holes is air-tightly or fluid-tightly sealed with a transparent member; a projection optical system member having a light projection port for projecting the inspection light; a light-receiving optical system member having a light introduction port for receiving the inspection light transmitted through the internal space; a base member for supporting the cell, the projection optical system member, and the light-receiving optical system member in common; and gaps between through hole forming surfaces of the cell and surfaces of respective optical system members arranged facing the through hole forming surfaces are formed along a line in a direction perpendicular to an optical axis of the inspection light.