Method and system of supplementing the spectral content of illuminating light based on a target illumination spectrum

A lighting system for supplementing a main illuminating light with a supplementary illuminating light to illuminate a space according to a target illumination spectrum, the lighting system comprising:

• a plurality of solid-state light emitters configured to emit a respective plurality of emitter beams forming the supplementary illuminating light and illuminating the space along with the main illuminating light, the plurality of emitter beams having a respective plurality of emitter spectra together defining a supplementary illumination spectrum of the supplementary illuminating light;
• and
• a control and processing unit operatively coupled to the plurality of solid-state light emitters, the control and processing unit being configured to:
• determine or receive a reference illumination spectrum associated with the main illuminating light;
• determine a spectral deviation between the reference illumination spectrum and the target illumination spectrum;
• and
• control the plurality of solid-state light emitters by adjusting the plurality of emitter spectra to match the supplementary illumination spectrum to the spectral deviation and illuminate the space according to the target illumination spectrum.