Photodiode array detector with different charge accumulation time for each light receiving element within one unit

摘要

A photodiode array detector used for detecting light which has undergone wavelength separation by a spectroscopic element, the photodiode array detector including: a light receiving element array wherein, taking a plurality of light receiving elements which detect light of the same wavelength range as one unit, a plurality of such units are arrayed in the direction of dispersion of said wavelength; and a charge accumulation time setting unit which sets different charge accumulation times for the plurality of light receiving elements within the one unit.