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Table 3 Differences of radiant flux (ΔΦ e ), luminous flux (ΔΦ v ), correlated color temperature (ΔCCT), chromaticity (Δu’v’) and general color rendering index (Δ R a ) between the simulated and the measured spectral emission curves for the four phosphor mixtures

From: Measuring, simulating and optimizing current LED phosphor systems to enhance the visual quality of lighting

G1/R1
CCT/K Δ Φv/lm CRI, Ra,meas Δ CRI Ra Δ CCT/K Δ u'v'wtq Δ u'v'm Δ u'v's Δ Φe/% Δ Φe/W
2700 2 78 4 238 1.39E-02 7.31E-04 1.02E-02 0.4 0.0083
4300 1 82 7 182 1.09E-02 4.12E-04 8.90E-03 3.6 0.0094
5600 1 83 1 519 7.78E-03 3.43E-03 8.44E-03 3.6 0.0058
6200 0.1 84 1 260 4.30E-03 4.72E-03 3.13E-03 0.5 0.0044
8700 0.9 81 3 1523 1.23E-02 2.91E-03 1.23E-02 4.3 0.0074
G1/R2
CCT/K Δ Φ v /lm CRI, R a,meas Δ CRI Ra Δ CCT/K Δ u'v' wtq Δ u'v' m Δ u'v' s Δ Φ e /% Δ Φ e /W
2700 4 62 1 257 1.43E-02 1.33E-03 1.08E-02 12.2 0.0102
3000 2 67 0 208 8.03E-03 1.46E-03 4.51E-03 6.4 0.0058
4000 1 71 1 175 4.55E-03 8.85E-04 2.22E-03 2.1 0.0055
5000 1.9 73 3 198 6.55E-03 3.85E-03 9.01E-05 3.7 0.0069
7900 0.9 76 1 536 4.49E-03 2.34E-03 3.48E-03 3.1 0.0052
G2/R1
CCT/K Δ Φv/lm CRI, R a,meas Δ CRI Ra Δ CCT/K Δ u'v'wtq Δ u'v'm Δ u'v's Δ Φe/% Δ Φe/W
2700 0 82 2 50 2.18E-03 1.72E-03 2.29E-03 2.5 0.0052
3100 0 85 1 71 3.72E-03 1.15E-03 6.55E-04 2.2 0.0040
4300 1 85 2 23 2.92E-03 5.86E-04 3.66E-03 1.9 0.0063
4700 0.0 85 4 175 1.02E-02 4.91E-04 8.75E-03 3.9 0.0053
5200 0.4 85 3 7 2.26E-03 4.98E-03 7.28E-03 2.8 0.0050
6100 1.0 82 3 295 9.84E-03 3.41E-03 4.04E-03 0.0 0.0051
8000 0.2 81 1 329 3.63E-03 2.89E-03 1.35E-03 2.5 0.0053
G2/R2
CCT/K Δ Φv/lm CRI, R a,meas Δ CRI Ra Δ CCT/K Δ u'v'wtq Δ u'v'm Δ u'v' s Δ Φ e /% Δ Φ e /W
2700 0 63 1 91 6.64E-03 9.84E-04 5.18E-03 3.6 0.0077
3000 0 66 2 293 1.29E-02 1.25E-03 1.16E-02 4.7 0.0101
4000 0 72 4 67 6.01E-03 1.14E-03 5.26E-03 3.4 0.0061
4900 1.3 74 4 169 3.33E-03 3.35E-04 3.51E-04 5.9 0.0111
6800 0.3 76 7 35 6.21E-03 3.82E-03 2.23E-03 2.5 0.0097
7500 0.0 76 7 243 7.37E-03 3.72E-03 2.50E-03 4.0 0.0122
  1. Δu'v'ms: distance between the chromaticity points of the measured and simulated PC-LEDs; Δu'v'wtq,m: distance between the chromaticity point of a measured PC-LED spectrum and its reference light source (the measure of visual white tone quality for the measured PC-LED spectrum); Δu'v'wtq,s: the same for the corresponding simulated spectrum; Ra,m is the CIE general color rendering index computed from the measured spectrum (E-02 means · 10-2, etc.).