| 摘要 |
PROBLEM TO BE SOLVED: To provide a polychromator and an analyzer including the polychromator which are capable of preventing an adverse effect caused by unwanted light and detecting light of each wavelength at high output and high resolution.SOLUTION: A focus correction member 14 is arranged between a diffraction grating 11 and a detector 12. In a process of allowing light from the diffraction grating 11 to penetrate through the focus correction member 14, a focal position of light of each wavelength to the detector 12 is corrected. A non-fluorescent multilayer film filter 15 which performs total reflection to light of a predetermined wavelength is vapor deposited on the focus correction member 14. By making light of a predetermined wavelength perform total reflection by the multilayer film filter 15, unwanted light can be removed, and the multilayer film filter 15 itself does not become a stray light source because the multilayer film filter 15 is non-fluorescent. Therefore, by appropriately correcting a focal position of light of each wavelength by the focus correction member 14 while an adverse effect due to unwanted light is prevented, light of each wavelength can be detected at high output and high resolution. |
