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國外標準光源的定義

2010-08-25

                                                                  國外標準光源的定義

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