Figure 7
Study of origin of non-iridescent property.
The variation of chromaticity coordinates in the CIE 1931 chromaticity diagram depending on the center wavelength and peak transmission, for the cases of (a) No sideband level (To = 0) and (b) Non-zero sideband level (To = 0.05) of an assumed spectral response with a normal (Gaussian) distribution defined by f(λ,λ0,Δω,T0,T1) = T0 + T1/exp[(λ − λ0)2(2Δω)−2], where λ is the wavelength, λo the center wavelength of the resonant peak, To the side band transmittance level, (To + T1) the peak transmission of the spectral response and Δω the 3-dB bandwidth of the resonant peak. It is witnessed that the hue and saturation do not change if the side band transmission is maintained at zero irrespective of degradation in peak transmission.
