Table 1 Characteristics of light sources used in experiments
From: Wood discoloration patterns depending on the light source
Light source | Radiant power distribution (%) | Correlated colour temperature (CCT) (K) | Luminous efficacy (lm/W) | Illuminance on surface (lx) | Irradiance on surface (400-1100 nm) (W/m2) | ||
|---|---|---|---|---|---|---|---|
300–400 nm (UV) | 400–520 nm | 520–800 nm | |||||
LED (warm) | 0.23 | 19.7 | 80.1 | 3000 | 100 | 2350 | 6.7 |
LED (cool) | 0.21 | 40.7 | 59.1 | 6500 | 103 | 3100 | 5.8 |
Incandescent | 0.61 | 7.1 | 92.3 | 2700 | 11 | 2200 | 97.5 |
Fluorescent | 1.43 | 15.7 | 82.9 | 2700 | 65 | 1900 | 5.1 |