| 摘要 |
PURPOSE:To measure the reflected spectrum accurately, by separately measuring and recording the reflected spectrums of light beams, which are polarized into two different angles, and operating the reflected spectrum with regard to the light at the other angle of polarization based on the two kinds of spectrums. CONSTITUTION:A sample light beam and a compensating light beam are inputted to a detector 4. These light beams are converted into electric signals. The signals are sent to an A/D converter 10 through an amplifier 9 and further converted into a digital signals. The digital signals are processed by a computer 11. Based on the command from an input device 12, the reflection spectrum of polarized light at 0 deg. (a) is measured. The measured result is stored in a memory device 13. Then the reflected spectrum of polarized light at 90 deg. (b) is measured and stored. Thereafter, the reflected spectrum at theta degrees is measured by an operator 14 based on the expression 1 in the Figure. |
