easilyled
Flashaholic
I believe we now generally agree on the subject. Like you, I believe that Olight managed to properly design this light. I wanted only to point out that if they did, it wasn't as easy task as it may seem at first glance. These new single-die LEDs, even if driven at half of the maximum power, can be much more demanding than their predecessors from Cree driven at full power.
Agreed.
The Luminus-SST50/90 leds are demanding because they output a lot of lumens.
You don't get a lot of lumens without consuming quite a lot of power at the same time unless there's a big advance in efficiency.
I don't know the lumens/watt specs for the Luminus leds at different currents and temperatures, but suspect that they won't be a huge leap forward on other manufacturers.
Because of the high power consumption, although the luminus leds are single-dies, it is more relevant in my opinion to compare them with the MC-E and SSC-P7, than the single die XRE or SSC-P4.
I think they are an improvement on the MC-E and SSC-P7 because they are built to withstand higher currents given the proportionate heat-sinking.
In addition, the beam quality is much better because they do not project the donut/cross artifacts that the MC-E and SSC-P7 do.
The reason why I made my comments was that I thought 500 (presumably emitter) lumens output was quite a responsible level to set for this form factor and that therefore with proper due diligence in design, that the resultant heat should be within reasonable limits to sink and control.
There seems to be a conception, maybe a misconception, that Titanium is a completely unsuitable material for a flashlight and this winds me up sometimes because I think that in many ways it has excellent potential and properties for use in the casing for a flashlight.
I am fortunate enough to have a 3 beautiful Titanium Aleph-Style lights built by the likes of TB and Mirage_Man with biflupic SSC-P7 light-engines made by darkzero.
The highest level on one of them is about 1.7A, and the other 2 goes well beyond 2A.
The Aleph L.E is very small so there is not a lot of room for making a thick heatsink.
Even so, the light that runs on 1.7A seems to have no problem maintaining that level while running reasonably cool. I have touched the heat-sink after about 5 continuous minutes and its not excessively hot.
The 2 that run over 2A heat up faster of course, but their automatic shut-down mechanism isn't activated even after about 10 continuous minutes of running them according to darkzero.
I err on the side of caution though and don't run them for such a long time continuously.
Anyway, armed with this knowledge is another reason that gives me cause for optimism with the Olight M20 Warrior SST50 Titanium