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Mark,
Attached is a PDF of the dimensions of the reflector I did for Jon. This reflector was designed for use with the Luxeon. If a Seoul P4 is used, the focal length as well as focal point would need to be changed which might alter the profile to a point of consideration.
- Don
Another difference I'd like to see is to have a flat "flange" that sticks
above the "web", like the optics do, instead of having a "shoulder" down
below it and relying on a tight fit with the Web or pushing against the
LEDs (which could cause a short in the case of the Luxeon Rebels we are
switching over to). The flange should be something like 0.035" thick.
Mark, where are you located?
DCN
Hi Mark,
I have some small reflectors I designed for use with the Rebel. There is a 10mm OD and 12mm version which is deeper than the 10. These reflectors are designed to seat against the Rebel but they can be pushed hard against it. The Rebel is a tiny LED and needs special care.
- Don
Hi Mark,
Sorry for such a tardy response. I have been in tunnel version on a light build. I don't recall off hand where the difference is between image location of the Rebel VS the Luxeon but I believe a portion of the rear of these reflectors would need to be removed to allow the Rebel to move up into the focal point.
- Don
xcathodex wrote:Don is the guy who made the reflectors for JS Burly?
VACaver wrote:Quick question...
Side by side, how can you tell a standard Sten from a premium? Looking at my standard and a friends premium, they both look the same.
Mark620 wrote:Human eyes work on an exponential curve so in order for
us to perceive a change of 2X in brightness the amount of light actually has to increase 10X.
Mark620 wrote:VACaver wrote:Quick question...
Side by side, how can you tell a standard Sten from a premium? Looking at my standard and a friends premium, they both look the same.
The Luxeon Rebels are brighter and more efficient than the older Lux3. So this means you have more light output and longer run time
on the same battery (given the batteries have the same amount of charge). Human eyes work on an exponential curve so in order for
us to perceive a change of 2X in brightness the amount of light actually has to increase 10X.
Another thing we need to consider as cavers is that we want a light that covers a large area and the light industry is concerned
about keeping the light concentrated into a small area. This is exactly the opposite of our actual requirements when moving around
in a cave. A good focused light is good for spotting and seeing things that are far away but not good for moving around on an uneven
surface.
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