Appendix
86
Appended Tables
Color Correction Factor
Standard Light
A ·································································································· 1.000
D65 ····························································································· 0.995
Filter (under standard sources A)
R-61 ··························································································· 1.009
O-55 ·························································································· 1.011
Y-48 ··························································································· 0.999
G-52 ··························································································· 0.986
B-46 ··························································································· 0.967
Fluorescent Lamp
Three band fluorescent light ············································ 1.007
White light (FL-W) ································································ 1.004
Daylight (FL-D) ······································································ 0.998
HID Lamp
High-voltage mercury lamp (H-400) ····························· 0.998
Fluorescent mercury lamp (HF-400) ···························· 1 . 0 1 0
Sun lamp (D-400) ································································· 0.999
Metal hydride lamp (M-400) ············································· 0.999
High-voltage sodium lamp (NH-400) ····························· 1.015
Color Television
Red ····························································································· 1.060
Green ························································································· 0.988
Blue ···························································································· 1.007
White ·························································································· 1.004
The above data obtained by the spectral sensitivity of a sample instrument. There are minor
variations among instruments.
Unit Conversion Table
cd/㎡ (nt) cd/cm
2
(sb) cd/ft
2
rlx (asb) Lamberts
Foot-Lamberts
(ft-L)
1 10-4 0.0929 3.1416 0.000314 0.2919
3.426 0.0003426 0.3183 10.764 0.001076 1
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