| 摘要 |
PROBLEM TO BE SOLVED: To widen a wavelength range without loss of resolution of a quantometer using a two-dimensional array type detector. SOLUTION: In a quantometer comprising a light source 1 exciting a sample, an incidence optical system 2 condensing the emitted light, and a spectroscope spectrum-analyzing light gathered, the spectroscope is constituted of an incident slit 3, a diffraction grating 5 dispersing the light passed through the slit 3, and a two dimensional array type detector 7 detecting the light dispersed, and then a plurality of openings arranged in the two directions of a channel of the grating 5 and perpendicularity to the channel of the grating 5 so that the openings are not overlapped mutually in respective directions are placed at the slit 3.
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