The measurer canmeasure the transmissivity and reflectivity of thesesamples under different angles, by Fresnel formula,the absorptivity, the refractivity and other opticalparameters would be computed.

• 此仪器可测量试样在不同角度下的透射率、反射率，通过菲涅耳公式可计算出试样的吸收系数、折射率等光学参量。