There exists a need for the design of light emitting diode (LED) luminaires which can deliver both visual and non-visual benefits of light to humans.In this work, we introduce an optimization approach based on spectral shaping for a minimalistic and practical design of a circadian-tunable multi-channel luminaire which also outputs white light with high quality and luminous efficacy of radiation (LER).The spectral optimization approach utilizes Multi-objective Genetic Algorithm to maximize Frying Pans circadian tunability, light quality and LER while minimizing the number of channels.Solution sets are constrained using the non-visual quality metric, Melanopic Efficacy of Luminous Radiation (MELR) from the Melanopic Equivalent Daylight Illuminance (MEDI) approach and the more stringent visual quality metric TM-30 in addition to conventional Color Rendering Index (CRI).By matching theoretically optimized LED parameters to commercially available LED parameters for commercialization purposes, we establish the maximum MELR tunability that is achievable with 4 and 5 LED channels and the resulting ALPHA LIPOIC ACID trade-off in efficacy and light quality.
Based on the results and analysis in this work, we detail a spectral optimization approach to propel the field of indoor lighting towards human-centric lighting.