	US 11,985,742 B2
	Method and system of supplementing the spectral content of illuminating light based on a target illumination spectrum
Gabriel Dupras, Otterburn Park (CA); Jacques Poirier, Huntingdon (CA); François Roy-Moisan, Verdun (CA); Charles Smith, Longueuil (CA); Alban Derville, Montréal (CA); Danny Bouthot, Saint-Hubert (CA); Louis Brun, Mont-Royal (CA); and Guillaume Tourville, Montréal (CA)
Assigned to SOLLUM TECHNOLOGIES INC., Montréal (CA)
Appl. No. 17/416,444
Filed by SOLLUM TECHNOLOGIES INC., Montréal (CA)
PCT Filed Dec. 17, 2019, PCT No. PCT/CA2019/051837 § 371(c)(1), (2) Date Jun. 18, 2021, PCT Pub. No. WO2020/124224, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/782,872, filed on Dec. 20, 2018.
Prior Publication US 2022/0046773 A1, Feb. 10, 2022
Int. Cl. H05B 45/22 (2020.01); H05B 47/11 (2020.01)

CPC H05B 45/22 (2020.01) [H05B 47/11 (2020.01)]

18 Claims

1. A method of supplementing a main illuminating light with a supplementary illuminating light from a plurality of solid-state light emitters to illuminate a space according to a target illumination spectrum, the method comprising:

determining or receiving a reference illumination spectrum associated with the main illuminating light;

measuring the reference illumination spectrum of the main illuminating light with a plurality of reference spectrum sensors disposed at different locations within the illuminated space;

collecting information about the supplementary illumination spectrum of the supplementary illuminating light with a supplementary spectrum sensor;

determining a spectral deviation between the reference illumination spectrum and the target illumination spectrum;

controlling the plurality of solid-state light emitters 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, the controlling comprising 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 illumination light and the supplementary illuminating light, according to the target illumination spectrum; and

measuring a supplemented illumination spectrum of the supplemented illuminating light with a plurality of supplemented spectrum sensors positioned within the illuminated space;

wherein said determining the spectral deviation between the reference illumination spectrum and the target illumination spectrum comprises monitoring the spectral deviation over time for changes, and wherein adjusting the plurality of emitter spectra comprises, upon detection that the spectral deviation has changed, adjusting the plurality of emitter spectra to keep the supplementary illumination spectrum matched to the spectral deviation, based on measured spectra information by the plurality of reference spectrum sensors, the plurality of supplemented spectrum sensors and the supplementary spectrum sensor.