Table 5 Calculated radiant exposure lamp–sun equivalences (in “days of use”) for different scenarios and for a decreasing distance d (mm) between the lamp and sunglasses
From: Equivalence between solar irradiance and solar simulators in aging tests of sunglasses
Distance (d) from lamp (mm) | ||||||
|---|---|---|---|---|---|---|
300 | 250 | 200 | 150 | 100 | 50 | |
From peak to peak | ||||||
Min | 2 | 3 | 5 | 9 | 19 | 78 |
Max | 7 | 10 | 16 | 28 | 63 | 252 |
Med | 3 | 4 | 7 | 12 | 27 | 107 |
From sunrise to sunset | ||||||
Min | 2 | 2 | 4 | 6 | 14 | 57 |
Max | 2 | 3 | 5 | 9 | 21 | 84 |
Med | 2 | 3 | 4 | 7 | 16 | 62 |
First band peak only | ||||||
Min | 14 | 21 | 32 | 57 | 129 | 516 |
Max | 23 | 33 | 52 | 93 | 209 | 836 |
Med | 16 | 22 | 35 | 62 | 139 | 557 |