| 摘要 |
PURPOSE:To horizontally set a specimen for the measurement of transmission, to eliminate error by making the movement of a compensator unnecessary and performing the reflection measurement of polarized light with high accuracy along with the transmission measurement thereof, by making an auxiliary polarizer accessible to the ligth path of an apparatus. CONSTITUTION:A polarizer P, a compensator C, a slide stage ST and a detector A are arranged between a light source L and a light detector D. The compensator C is fixed so that the optical axis thereof of set in an azimuth of 45 deg. with respect to the reference surface of an apparatus, and the polarizer P and the detector A are made rotatable around an optical axis. Further, the detector A and the detector D are mounted on one arm and made rotatable around the center point O of a goniometer and the stage ST is also provided in the same manner. At the time of measurement, them stage ST is detached and a specimen S is set on a turntable RT but a new auxiliary polarizer PC of which the optical axis is parallel to the reference surface is preliminarily provided on the stage ST. In this constitution, the goniometer is rotated and the polarizer PC is finely adjusted around the optical axis so as not to change the extinction position of the polarizer A.
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