Recent content by matt304

fenix-store
  1. M

    RC40vn40 - 40,000 Lumen ;-)

    This is really interesting. There's another light which I read about not long ago, that also was very crazy like this RC40 is. It's a very similar design type as the Fenix but much smaller 95 or 100mm head with 12 full reflectors + XHP70s (it was either the XHP50 or 70). I think the body is...
  2. M

    K60vn vs k70vn vs T6vn

    I was just curious, what does a "vn" model have installed typically? I keep hearing people say "vn" but I don't see anything different from first glance just maybe brighter? Or are they like the mem guy does on Blf with phosphor enhancement to make the HI chips flux brighter? Or maybe just amp...
  3. M

    The Nightsword project

    Did you sort of give up on this ever being a production design? Sounds like you might have leaned towards personal experimentation over the long run, possibly? Which I get, totally. A lot of production designs become quite harder to pursue, especially when some of us have never-ending OCD like...
  4. M

    Niwalker Aurora C26 XP-L HI 1400 lumens 26650 based thrower

    Single 26650 lights seriously rock. :twothumbs ...just crossed this thread after I stumbled over the C26 myself about a minute ago. Can anyone suggest good reason why the big mfgs aren't making boost drivers for such lights? Maybe Im just naive, but I can't recall the last time I saw a single...
  5. M

    Building a 47mm OD, 13A LED BUCK driver

    There is a person belonging to the other light forum who did this last year I found out. I was told the driver was also meant for a very large custom host, it is bucking 3S to over 11 amps to an MTG2. Or was doing that in the prototype test and the driver was specd to hit over 13A but was tested...
  6. M

    LED SEAL - a de-domer's best friend?

    Sorry to pull back the dead thread from 2013--no really, I am, but this came up searching for "LED Seal" and it is still very useful a topic. It is critical in some cases to seal de-domes! But, years later, with what(?) you may still ask now. My recommendation, even with proven seal...
  7. M

    Cree's new XLamp XP-E2 Torch LED

    An XM-L is just an orange in this discussion. Hehe. I mean, there's no comparison of how poor an XM-L size die performs in small lights when you put "throw" or "distance" in the same sentence. XM-L die is a 50mm+ host head diameter optimal LED. Are they efficient? Yeah. But that's not the...
  8. M

    Cree's new XLamp XP-E2 Torch LED

    I don't think Cree would bin it at 450+ if they weren't getting over 400 lumens. Seems like we might have the first batch of their next generation XP manufacturing process appearing. Makes sense, limited initial production of materials, so they cut the wafers smaller to get more LEDs made. AKA...
  9. M

    Cree's new XLamp XP-E2 Torch LED

    First is the obvious I hinted at, viewing angle change from 110° to 125°. It's not just a bin change, apparently.
  10. M

    Cree's new XLamp XP-E2 Torch LED

    Here it is. Cree's new "XLamp XP-E2 Torch" LED. Specs per Cree; Cree XLamp XP-E2 Torch specifications: Size (mm x mm) 3.45 x 3.45 Maximum drive current (A) 1.5 Maximum power (W) 3.5 Lumen range 360 – 456 Typical forward voltage @ 1.05 A (V) 3.5 Viewing angle (degrees) 125...
  11. M

    Lens Shapes, Optical Arrangements, and high-Kcd Throw

    SVEN_M, Great post! I see both sides of where we are viewing from. IT CAN GET COMPLICATED! (If we want to predict an outcome to a high degree of accuracy.) With that said, I completely understand the logic behind taking it at face value; we have a square turning into a line, as angle of...
  12. M

    Lens Shapes, Optical Arrangements, and high-Kcd Throw

    I have been testing optical arrangements, combined with light-recycling collars and without. The collar of course allows the system to become more compact, diameter-wise in some lens configurations (of lower F# mainly), because the collar effectively is an aperture ahead of the LED. So a...
  13. M

    Lens Shapes, Optical Arrangements, and high-Kcd Throw

    This actually seems so simple, that I'm not sure why this isn't brought up more often. Unless my outlook is completely off, in which case if it is, someone would be very helpful to explain why what I am about to explain would not be true in practice. I will skip the obvious things which I think...
  14. M

    Lens Shapes, Optical Arrangements, and high-Kcd Throw

    My understanding was that what you're saying in that quote is mostly true, to a degree. Here's what I have gathered from research: FL does in fact matter towards lux, with all else being equal, and there will be a non-linear curve in lux output as a certain F/# value is reached and passed...
  15. M

    Lens Shapes, Optical Arrangements, and high-Kcd Throw

    I came across a lens which is absolutely destroying my others lenses of similar shape/size/FL. It is approximately 83mm x 90mm FL. What is different about this lens, is that it is an aspheric lens, with a convex backside, or a radius on the side which is typically plano in other words on an...
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