標(biāo)準(zhǔn)光源 |
定義 |
A |
Artificial illuminant such as a tungsten lamp at a color temperature of 2880°K |
B |
Noon sunlight at 4874° K |
C |
Average daylight (overcast sky) at 6774° K |
D50 |
Typical bright daylight (overcast sky) at 5000° K |
D55 |
Typical bright daylight (overcast sky) at 5500° K |
D65 |
Typical bright daylight (overcast sky) at 6500° K |
D75 |
Typical bright daylight (overcast sky) at 7500° K |
F2 |
Cool white fluorescent lamp at 4200° K |