Photopic to Scotopic trolands

Conversion of photopic troland values (Tp) to scotopic troland values (Ts) for spectral stimuli of different wavelength lambda and for blackbody radiators of different temperatures T(K)

Spectral stimuli*
Blackbody radiators of different temperatures#
λ(nm)
k
T(K)
k2
400
58.39
1000
0.2650
410
71.67
1250
0.4350
420
60.11
1500
0.6100
430
42.87
1750
0.7810
440
35.51
2000
0.9430
450
29.80
2042
1.000
460
23.52
2250
1.0930
470
18.49
2500
1.2350
480
14.20
2750
1.3630
490
10.82
2856 (A)
1.4110
500
7.57
3000
1.4810
510
4.93
3500
1.6890
520
3.28
6000
233580
530
2.34
6500 (D65)
2.4640
540
1.70
7000

2.5210
550
1.20
560
0.822
570
0.543
580
0.347
590
0.215
600
0.131
610
0.0788
620
0.0481
630
0.0313
640
0.0213
650
0.0157
660
0.0128
670
0.0115
680
0.0105
690
0.0107
700
0.0108

Compiled by Ted Sharpe after Wyszecki & Stiles (1982), Table 1(2.4.4), p. 104.

References

Wyszecki, G., & Stiles, W. S. (1982). Color Science (2nd ed.). New York: Wiley.