All the time during my modding projects
http://www.candlepowerforums.com/vb/...d.php?t=308435
I had the impression to get more light OTF when using lenses instead of reflectors.
The last two days I measured it.
The following graph shows the Energy throughput of
2 lenses and 2 reflectors. As a result you see that
lenses will give you between 6-10% more OTF Lumen.
So it was a good decision to use the lenses for the
AURORA modding instead of the original reflector.
I will add the complete story in another thread.
My feeling is that reflectors are real mass products
and not optimized with respect to reflectivity.
When we look for an optimum of OTF lumens
we have to take in account that we easily can
win 6-10% with lenses and another 7-8%
with double sided antireflectance coating at
the front window instead of normal glass.
In the graph above you see the difference in Transmission between the
normal AURORA front window and an UCL lens from
http://www.flashlightlens.com/str/in...9u05pv9s76068b
Konrad
http://www.candlepowerforums.com/vb/...d.php?t=308435
I had the impression to get more light OTF when using lenses instead of reflectors.
The last two days I measured it.
The following graph shows the Energy throughput of
2 lenses and 2 reflectors. As a result you see that
lenses will give you between 6-10% more OTF Lumen.

So it was a good decision to use the lenses for the
AURORA modding instead of the original reflector.
I will add the complete story in another thread.
My feeling is that reflectors are real mass products
and not optimized with respect to reflectivity.
When we look for an optimum of OTF lumens
we have to take in account that we easily can
win 6-10% with lenses and another 7-8%
with double sided antireflectance coating at
the front window instead of normal glass.

In the graph above you see the difference in Transmission between the
normal AURORA front window and an UCL lens from
http://www.flashlightlens.com/str/in...9u05pv9s76068b
Konrad