Fig. 7From: Energy balance in Spectral Filter Array camera designOptimal filters according to Eq. 7, with the variation of standard deviations σ i for N = 3 (a), 5 (b), 8 (c) and 12 (d) such as 0.1≤σ i ≤100. Illuminant E and a lambertian reflector are used. The sensor silicon efficiency is shown in backgroundBack to article page