Patent ID: 8842277
Filing Date: 2014-09-23
Classification: G01B,G01J,G01N

Abstract:
1. An optical measurement device comprising: an orthogonal separation unit which orthogonally separates transmitted light in which linearly polarized light has passed through a test object; at least two light receiving units which receive light which is orthogonally separated in the orthogonal separation unit; an angle of optical rotation calculation unit which includes a transmitted amount of light determination unit which determines amount of light of the transmitted light, or amount of light of a predetermined proportion of the amount of light, and calculates an angle of optical rotation after normalizing a difference between the received light levels which are received in the light receiving unit using the amount of light which is determined in the transmitted amount of light determination unit; a non-polarizing division unit which divides the transmitted light using the predetermined proportion in a non-polarizing manner; and a second light receiving unit which receives light on one side which is divided in the non-polarizing manner, wherein the orthogonal separation unit orthogonally separates light on the other side which is divided in the non-polarizing manner, and wherein the transmitted amount of light determination unit determines amount of light of the transmitted light of the predetermined proportion based on the received light levels of the second light receiving unit.