Research Article
Color Temperature Tunable White-Light LED Cluster with Extrahigh Color Rendering Index
Table 2
The predicted and measured results of the white-light LED cluster at
= 45°C.
| | | Predicted results | Measured results | | CCT (K) | 2703 | 2952 | 3431 | 3922 | 4490 | 4976 | 5715 | 6547 | 2719 | 3028 | 3458 | 3983 | 4537 | 5012 | 5723 | 6497 |
| WW LED | (mA) | 273 | 268 | 260 | 250 | 239 | 229 | 214 | 203 | 273 | 268 | 260 | 250 | 239 | 229 | 214 | 203 | Red LED | (mA) | 156 | 126 | 87 | 60 | 44 | 34 | 20 | 10 | 156 | 126 | 87 | 60 | 44 | 34 | 20 | 10 | Green LED | (mA) | 27 | 56 | 88 | 115 | 140 | 160 | 198 | 213 | 27 | 56 | 88 | 115 | 140 | 160 | 198 | 213 | Blue LED | (mA) | 0 | 12 | 53 | 90 | 129 | 154 | 179 | 210 | 0 | 12 | 53 | 90 | 129 | 154 | 179 | 210 | | dC × 10−3 | +1.2 | +1.6 | | | | | | | | | | | | | | | | CRI | 94 | 93 | 94 | 95 | 96 | 96 | 95 | 95 | 93 | 93 | 94 | 94 | 95 | 94 | 94 | 94 | | R9 | 94 | 92 | 90 | 93 | 98 | 98 | 94 | 91 | 90 | 94 | 92 | 95 | 96 | 95 | 96 | 93 | | R(9–12) | 85 | 82 | 83 | 84 | 86 | 85 | 86 | 85 | 84 | 85 | 83 | 84 | 85 | 85 | 84 | 83 | | R14 | 89 | 89 | 91 | 92 | 93 | 94 | 94 | 94 | 89 | 90 | 90 | 91 | 91 | 90 | 91 | 91 | | R15 | 99 | 97 | 98 | 99 | 97 | 97 | 95 | 94 | 98 | 99 | 99 | 98 | 95 | 95 | 95 | 94 | | (lm) | 261 | 260 | 258 | 254 | 250 | 245 | 239 | 232 | 256 | 250 | 262 | 254 | 245 | 244 | 234 | 228 | | (lm/W) | 87 | 87 | 84 | 82 | 79 | 76 | 73 | 71 | 85 | 84 | 85 | 85 | 78 | 76 | 73 | 70 |
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