OPTICAL SYSTEM FOR SIMULTANEOUSLY MEASURING ABSOLUTE REFLECTIVITY AND ABSOLUTE TRANSMISSIVITY

摘要

PROBLEM TO BE SOLVED: To provide a symmetric-X-type optical system for simultaneously measuring the absolute reflectivity and absolute transmissivity of a matter for accurately determining the optical constants of the matter.;SOLUTION: At least four mirrors or more selected from among four concave mirrors CM1-CM4 and four auxiliary mirrors SM1-SM4 are combined with two beam switching mirrors RM1 and RM2. Then by making light incident onto a sample from its surface and back surface, it is possible to measure both the absolute reflectivity to surface incidence and back surface incidence and absolute transmissivity to surface incidence and back surface incidence.;COPYRIGHT: (C)2004,JPO