| 摘要 |
PROBLEM TO BE SOLVED: To develop a high-resolution aberration correction spectroscope in which a polychromator aberration-corrected for a multichannel spectroscope is optically designed, in which light can be aberration-corrected simultaneously to the center and the peripheral edge of a multichannel detector, and which has a superior aberration characteristic in a wide wavelength range, by a method wherein the aberration correction spectroscope is installed at the rear of a front-end spectroscope, signal light is wavelength-dispersed, and the efficiency of a main spectroscope used to detect a signal is increased by a photodetector installed at the inside. SOLUTION: In a Raman spectroscope, an incident slit, a collimator mirror, a diffraction grating, a camera mirror and a detector are arranged along the optical path of Raman scattered light. (1) The camera mirror is constituted of an aspherical mirror. (2) The distance between the diffraction grating and the camera mirror is controlled. (3) A plurality of diffraction gratings whose ruled line numbers are different are used.
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