joey
UKC Forum Member
Registered: Jun 2012
Location: McRae Ar
Posts: 3701 |
quote:
Originally posted by Roger Wilson
Michael,
Going to ask you a couple of questions and I hope you don't take offense.
1. Do you build these lights full time or is it a side line business? It seems like you have a real good thing going and the last time I ordered a light from the latest and greatest, they decided to shut the doors and change the phone number. (right after I sent them my entire light to be repaired,leaving me out a light and out a pile of money) I swore I would never deal with someone that didn't have a history of good service and reputation again.
2. How is the Sunfire (with 1 LED) so much brighter than the industry leaders lights that have 5-7 LED's?
Thanks
Roger Wilson
This is what I do full time. It’s what I plan on doing for a very long time. That’s the only promise any of us can make.
I use an xml for the Sunfire many of the other light dealers have stayed away from it because it floods instead of spotting. Some of the Chinese mining lights are starting to use them but they use a plastic head and are not able to feed it the amps it takes to really make it bright.
I have been working as an electronic engineer for a long time so I’m not new to this. Some of the other light dealers are limited by what is available on the market. I had the Sunfire reflector made to my specs. The secret to the brightness is the reflector combined with an xml set in an aluminum head to sink the heat away from it. The 5 and 6 led heads use less powerful leds set in shallow reflectors.
Most of them use 5 xre Q5 leds that at their max will give 235 lumens apiece. So if you draw 5 circles and overlap every one of them on the inside edge. The place where they all over lap is how they create a spot. The outside edge of the circles is what creates that clover leaf look around the edges. That is not as efficient as one led making a spot. The XML I use is 975.6 lumens and with this reflector it makes a good spot. So basically in my opinion one powerful led set in a deep reflector can be made brighter than multiple leds that are not as powerful in shallow reflectors.
You can use one of the leds they use with a large reflector and get just as high of a lux reading but with the low lumen output they have, the spot will be very small.
So to sum it up the reflector x the right led makes a brighter light than multiple leds in the shallow reflectors.
I hope this answered you questions.
__________________
Michael Rosamond
Sunspot Lights
936-827-6309
http://www.sunspotlights.com/
When brightness matters!!
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01-07-2013 05:33 PM
joey
