| 摘要 |
PURPOSE:To arrange detectors closely at a fixed distance to increase selectivity of an sample to be analysed by arranging the detectors on a spectrum image surface obtained by a spectral element to be dislo in the spectral directions in different degrees of spectra. CONSTITUTION:The solid-state image dectors 9lambda1, 9lambda2 are arranged so as to dislocate the wavelength dispersing directions within the photodetecting surfaces of positive primary spectrum S+1 and negative primary spectrum S-1 respectively. When wavelength lambda1 or lambda2 is to be changed, the detector 9lambda1 or 9lambda2 is dislocated in the wavelength dispersing direction within said respective spectra. Since two detectors are arranged so as to be displaced in the spectral directions within the different degrees of spectra on the spectrum image surface in this invention, the selectivity of an analying sample is extended independently of the interval between two wavelengths to be approached. |
