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Table 1 Lamp (XBO450–OFR) irradiance as a function of the distance d (mm) from the lamp bulb and its equivalence in number of suns for AM1

From: Equivalence between solar irradiance and solar simulators in aging tests of sunglasses

XBO450—OFR OSRAM irradiance (W m−2 )

Distance from the bulb d (mm)

Equivalent number of suns for AM1

467

300

0.5

672

250

0.7

1000

205

1.0

1051

200

1.1

1868

150

1.9

4202

100

4.2

16,808

50

16.8

  1. 1 sun (AM1) = 1000 W m−2