Spectrometry apparatus and spectrometry method

A spectrometry apparatus comprising:

• a light source that produces illumination light;
• a spectrophotometer that disperses signal light rays from a sample illuminated with the illumination light and detects the signal light rays by a two-dimensional array photodetector;
• a fiber unit having a plurality of fibers laid out in an optical path from the sample to the spectrophotometer, the plurality of fibers being adjacently arranged at an entrance end surface of the fiber unit, and the plurality of fibers being arranged in a multi-line shape at intervals at an exit end surface;
• a processing unit that, by referring to a layout relationship among the plurality of fibers at the entrance end surface and the exit end surface of the fiber unit, generates a spectroscopic image of the sample from a result of detection by the two-dimensional array photodetector, and
• a spatial light modulator that modulates the illumination light from the light source so as to selectively illuminate a plurality of spots on a region of interest of the sample, wherein
• signal light rays from the plurality of spots enter the fibers of the fiber unit, respectively.