| 摘要 |
PURPOSE:To make the comparison with a black body unnecessary by diffracting a thermal emission to more than four colors and measuring them, assuming the linear approximated equation of the spectral thermal emissivity, obtaining the temp. from the thermal emission of three colors of different two groups, and deciding the temp. with which the temp.s obtained respectively coincide, as the sample temp. CONSTITUTION:The thermal emission of a sample 2 is diffracted to plural wavelengths by a spectroscope 5 through a vacuum window 3, the spectral thermal emission quantity is detected by a detector 6, and the calculation for obtaining the thermal emissivity of the sample 2 is performed by a microprocessor 7. For the calculation, the spectral thermal emissivity at each wavelength is approached by a primary equation of the wavelength, and temp.s TA, TB are obtained from the spectral thermal emission against three colors wavelengths. Further, temp.s TC, TD are obtained from three colors containing remainder one color. If TA= TC, TBnot equal to TD as the result, the TA is decided as the temp. of the sample 2. The spectral thermal emissivity is obtained from the obtained temp., the spectral thermal emission and the wavelength. |
