Patent ID: 7978324

Claim:
A multi-channel array spectrometer, comprising: a housing including an entrance slit, a bandpass filter wheel holding a set of bandpass filters and an open hole, at least one grating and at least one array detector; a light collection means mechanically connected to said housing; an optical path extending from said light collection means to the array detector in said housing; a driving mechanism being mechanically connected to the bandpass filter wheel which drives the bandpass filter wheel so that one of the bandpass filters or the open hole is switched into the optical path; and a microprocessor being electrically connected to the array detector and the driving mechanism, wherein a number of the bandpass filters held in the bandpass filter wheel is a number within a range from 2 to 20, the bandpass filters including wavelength bands overlapping those of adjacent filters, and a combined wavelength range covering an entire wavelength range of the spectrometer.