SPECTRAL UNIT, AND METEOROLOGICAL OBSERVATION LIDAR SYSTEM

摘要

PROBLEM TO BE SOLVED: To increase the precision of measurement of a Raman lidar system. SOLUTION: The spectral unit is equipped with: a diffraction grating (32) for generating diffraction light on the basis of object light; two wedge mirrors (35, 36) arranged with a gap between on the optical path of the diffraction light; first interference filters (44, 45) arranged on the optical path of transmitted light passing through the gap between the two wedge mirrors; and second interference filters (38, 39) arranged on the optical path of reflected light generated by at least one of the two wedge mirrors. COPYRIGHT: (C)2008,JPO&INPIT