Looking at the Luminus SFT-10 Cg or SFT-20 CG (if I can find them) to build a light with a tight beam and as little spill as possible.
I see that typically a smaller die helps throwers, but being I’m looking at an Aspheric I’m wondering if the 2x output of the 2mm die would be better than the lower powered, but smaller, emitter.
For testing I will probably use the Uniquefire Uf-t20. Don’t in any way need the zoomie but that looks to be a good (cheap) host for a tight beam.
I had spent quite a few returning trips to OSRAMs site and just today I noticed something different. Apparently they now have a “white flat” in green! If my reading of the spec sheet is correct this thing is a beast. The highest bin pushes over 500 lument at 1 amp, specced to over 3amps (2.5x base lumens) and if how hard the regular white flat can be over driven the max output of this 1.06mm2 emitter could be over 1500 lumens. That’s a bit more then my 2amp Xpe2, which is already fairly awesome.
Yup, green light is the most visible to the eye, and since light measurement equipment is made to simulate the eye’s response then pure green light gives the highest efficiency and lumen numbers.
That green Osram LED is actually phosphor converted green,similar to Luxeon rebel lime, that's why is so efficient, it still uses efficient blue chip. Real green LEDs have lower lm/W despite the higher human sensitivity to green because "green" chips have very low efficiency compared to blue ones. That's why it makes sense to make phosphor converted green LEDs.
Do we have some kind of MCPCB for the KP CSLNM1.F1?
And i have 3 of the Osram LCG H9RN (https://www.mouser.de/ProductDetail/720-LCGH9RNMXNX1) with ledboards from Led4Power here.
But i have not had the time to test them. Hope i will get to them in the near future.
Check out the white flat thread (CSLNM1.tg). I believe the white flat can be use on a Cree board, and the white flat is much easier to use (then the black flat) since it has the neutral center contact. I believe the board you show will also work for this LED.
Hard to tell if it’s a downside for lighting use - due to the phosphor conversion it’s more of a light green, maybe lime. It has a rather broad spectrum going all the way into red. Which means there’s some color rendition, it’s like it can’t decide whether it’s green or VERY VERY off-white .
Far from “pure” green, but very bright.
Led is a Cree XP-E2 in green. Driver is from Mountain Electronics, just their cheap 1 amp single mode driver, with the 2 amp upgrade of course! It’s perfect actually as the E2 maxes out right around 2 amps.
That said, the E2 (very small die) puts out say 350 lumens at 2 amps, the CSLNM1.F1 is WAY more than that!
Full disclosure, that was in dense blowing snow, it was FAR brighter in that condition.
Assuming peak bin performance that SST is a beast. Best case performance is 1200 lumens in a non converted color! I’m running an XP-E2 that maxes at 400 some lumens and even losing a bunch in a zoomie it is quite powerful.