Collection optics system for spectrometer and Raman spectral system

A Raman spectral system comprising:

• a light source configured to emit light to a target object;
• a collection optics system configured to selectively collect a Raman signal from a scattered light output from the target object based on the light incident from the light source and output the Raman signal;
• and
• a spectrometer configured to receive the Raman signal output from the collection optics system,
• wherein the collection optics system comprises:
• a non-imaging collection unit configured to collect the Raman signal from the scattered light and output the Raman signal, the non-imaging collection unit comprising an entrance surface on which the scattered light is incident and an exit surface through which the Raman signal is output, the entrance surface being configured to be brought in contact with the target object;
• and
• a Raman filter provided on a portion of the entrance surface of the non-imaging collection unit and configured to block a portion of the scattered light comprising a fluorescence signal.