Erratum to: Optimization of a spectrally tunable LED daylight simulator (Color Research & Application, (2017), 42, 4, (419-423), 10.1002/col.22094)

In [], the full width at half maximum (FWHM) value of 30 nm was wrongly reported. All the spectral simulations performed in the study were based on a FWHM of 50 nm. On page 420 in the first paragraph of the section “Optimization for a Daylight Simulator with a Fixed CCT”, the sentence “To investigate the optimal channels of a daylight simulator containing n channels, the spectrum of each channel was simulated using a Gaussian distribution with a peak wavelength λ_j (j = 1,2…n) and a full width at half maximum (FWHM) of 30 nm, which is an average value of AlInGaP and AlGaInN LEDs.⁹” should be “To investigate the optimal channels of a daylight simulator containing n channels, the spectrum of each channel was simulated using a Gaussian distribution with a peak wavelength λ_j (j = 1,2…n) and a full width at half maximum (FWHM) of 50 nm. In comparison, the average FWHM value of AlInGaP and AlGaInN LEDs is around 30 nm.⁹”. On page 423 in the last paragraph of the left column, the sentence “It was found that at least six LED channels (FWHM = 30 nm) are required to produce an AA-grade daylight simulator with a fixed CCT level.” should be “It was found that at least six LED channels (FWHM = 50 nm) are required to produce an AA-grade daylight simulator with a fixed CCT level.” We thank G He for bringing the errors to the attention of the authors.