Sadly lux are very rarely quoted as it’s a bit more complicated to describe
It can be described in tabular format, I’ll post below, results from a prototype I had lab tested and you can see the light distribution.
Lux @ 1m – 0 degrees:
Light at Maximum output – 5990 Lux
Lux @ 1m – 2.8 degrees
Light at Maximum output – 5530 Lux
Lux @ 1m – 5.7 degrees
Light at Maximum output – 4130 Lux
2.8 degrees is equivalent to 0.5m out to the side at a distance directly ahead of 10m – Total beam width of 1.0m
5.7 degrees is the equivalent of 1.0m out to the side at a distance directly ahead of 10m – Total beam width of 2m
So, as you can see, it is possible to indicate beam pattern using lux figures, IF they are recorded correctly.
Thanks to Chris W, for the figures.
🙂