Standard Lens  (17)
Distance (m.) 1 2 3 4 5
Cutoff 0.3 0.6 0.9 1.2 1.5
1/2 peak 0.3 0.5 0.8 1.0 1.3
Illuminance (lux) 14000 3500 1556 875 560
 Efficacy
 35 lumens per watt
 Half-peak diameter
 0.25 X distance(m)
 Cutoff diameter
 0.30 X distance(m)
 Illuminance
 14000 / distance2 (lux)
 Total Output
 620 (lumens)
IES Data 2002      Eulumdat Data