Meanwhile I found my notes from my first tests with the Luxeon V. What I see there is a loss of about 33 to 36% both in max current and lumens after the damage occured - which is very close to a third. I have to concede that I’ve driven 2 of the LEDs pretty hard for test, up to 10 Amps which is not recommended at all. All LEDs have been ok on delivery, 2 went bad pretty fast, another one somewhat later in a light which has been driven with less current.
Btw. the highest lumen measurement I got (before the LEDs got damaged) was about 1800 lumens in a X3 at almost 10 Amps. Less than I expected.
I measured just over 2000 lumen at 30 seconds in a Thorfire VG10, at 9A. Mind that my lumen is probably about 9% high compared to official calibrated measurements (and low compared to other BLF and flashlight manufacturer calibrations), so your 1800 lumen is quite similar.
Thanks. Is this valid for all white LEDs (with phosphor removed)? I could make royal blue LEDs by myself then (I ordered royal blue for my D4 RGBW, but they didn’t show up yet). Protection glasses not required, I guess?
My understanding is that most white emitters use a Royal Blue emitter (not sure of peak frequency at the moment). There was an LED that was to center around 410nm by SORAA LED. I don't know if it ever came out. Here was a thread on it:
Imagine Emisar D7 with 21700 Samsung 30T, copper sandblasted head, anodized aluminium sandblasted body, copper dtp board for 7 Luxeon V emitters together with Ledil ANNA 7up spot optics! :innocent:
Is D7 released light? I will probably make a new batch of mosX boards next month, I already have few boards that I'd like to make,if there is enough interest I can add few other designs.
D7 is not yet released but as far as I know it should use 3x18650 and 7 emitters I suppose judging by name. I would love to see 21700 design though! In my opinion Emisar series should be single cell lights and Noctigon series multiple cell. I hope we will find out soon what D7 will look like!
I would love to see 7 luxeon V mosx boards compatible with Ledil ANNA! It’s the way to go. I am very optimistic in believing that in 2018th we will se more 20700 and 21700 single cell flashlights.
Btw I’ve built S2+ triple luxeon V with your parts led4power. I saw 16.2A with my Uni-T UT58E with extra thick 3.6mm short speaker wires and vtc5a. Output is insane.
Should be 5500 led lumens being on a conservative side. If 20% is lost (I am not using lens in front if optic and I I grinded lip to have optic and exposed as much as possible) I should be getting 4400 lumens OTF :partying_face: