SPECTROMETER

摘要

A spectrometer (11) recognizes a measurement target on the basis of the spectral data of observed light detected by a spectral sensor (14) capable of measuring wavelength information and light intensity information. The spectrometer is provided with a spectral data processor (16). Spectral data is detected at two different positions by the spectral sensor, and the processor subtracts a first spectral data item from a second spectral data item, or divides the first spectral data item by the second spectral data item to calculate one phase correlated spectral data item which is correlated to the spectral data at the two different positions. The processor simultaneously identifies the measurement target corresponding to the two different positions on the basis of the correlated spectral data.