Multifocal spectrometric measurement device, and optical system for multifocal spectrometric measurement device

Abstract

A multifocal spectrometric device is capable of simultaneously performing a measurement of a plurality of sample with high sensitivity, with no restriction on the magnification. A multifocal spectrometric device is a device in which beams of signal light emitted from a plurality of predetermined observation areas on samples placed in a sample placement section are introduced into a spectrograph and thereby dispersed into spectra, the device including: a plurality of objective lenses (objective light-condensing sections) individually located at positions which respectively and optically face the plurality of observation areas; and spectrograph input sections provided in such a manner that each of the plurality of objective lenses has one corresponding spectrograph input section, for introducing signal light passing through the corresponding objective lenses into the spectrograph. Since each objective lens only needs to observe one observation area, both the magnification and the numerical aperture can be simultaneously increased.