Modular accessory for a raman spectrometer

A modular accessory for orienting a light path at different angles to an optical axis of a spectrometer, the modular accessory comprising:

• an attachment module configured to couple to a Raman spectrometer oriented along an optical axis of the Raman spectrometer;
• a base module including a visible light imager and configured to couple to the Raman spectrometer through the attachment module, the base module including an input for a sample light beam and a first beam splitter providing bifurcation of the sample light beam, the bifurcation providing a visible light beam directed to the visible light imager and a Raman light beam directed along the optical axis of the Raman spectrometer, the Raman light beam including a Raman excitation beam from the Raman spectrometer and a Raman emission beam to the Raman spectrometer;
• and
• an objective module coupled to the base module and including an objective configured to provide an optical path for the sample light beam travelling from a sample along a light path to an objective lens of the objective, through the objective, and to the input for the sample light beam of the base module.