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

A method of supplementing a main illuminating light with a supplementary illuminating light to illuminate a space according to a target illumination spectrum, the method comprising:

• measuring a reference illumination spectrum of the main illuminating light with at least one reference spectrum sensor disposed within the space;
• and
• upon identification of a spectral deviation between the reference illumination spectrum and the target illumination spectrum:
• illuminating the space with a supplemented illuminating light, the supplemented illuminating light comprising the main illuminating light and the supplementary illuminating light, according to the target illumination spectrum;
• and
• providing a feedback signal representative of at least one property of the supplemented illuminating light to at least one of:
• the main illuminating light and the supplementary illuminating light to maintain the supplementary illumination spectrum matched to the spectral deviation, based on measured spectra information by said at least one reference spectrum sensor.

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;
• 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 with a supplemented illuminating light, the supplemented illuminating light comprising the main illuminating light and the supplementary illuminating light, according to the target illumination spectrum;
• at least one reference spectrum sensor disposed within the space to measure the reference illumination spectrum of the main illuminating light;
• and
• at least one supplementary spectrum sensor for collecting information about the supplementary illumination spectrum of the supplementary illuminating light;
• wherein upon identification of the spectral deviation between the reference illumination spectrum and the target illumination spectrum, the control and processing unit is configured to provide a feedback signal representative of at least one property of the supplemented illuminating light to at least one of the main illuminating light and the supplementary illuminating light to maintain the supplementary illumination spectrum matched to the spectral deviation, based on measured spectra information by said at least one reference spectrum sensor and/or said at least one supplementary spectrum sensor.