The new Luxeon V2

contactcr · 2018-12-10T15:26:32.000Z

Without being scientific it does appear to have more throw than a LH351D but with the dome on I don’t think anyone would consider this a thrower. Not sure how it performs dedomed and I think thus far only gchart and I have even tried them in a flashlight.

I have a C8F with 3x Luxeon V and when I compare it next to a LH351D of the same type there isn’t a huge difference in the overall beam. It’s a more intense hotspot but not by a huge amount.

gchart · 2018-12-10T15:37:37.000Z

If I’ve got time tonight I’ll try getting side-by-side numbers with the same flashlight setup using Luxeon V2, LH351D, XP-L, and XP-L2. I’ll see what else I can scare up, maybe a XP-G2, XP-G3, SST-20, XP-L HI. I’m pretty sure I’ve got all of those on hand, it’s just how much time I’ve got to swap in and out a bunch of different LEDs.

contactcr · 2018-12-10T15:51:28.000Z

Here’s a mechanical comparison of the domes of the SST-20 and Luxeon V2. SST-20 is quite a bit smaller in all dimensions and LH351D is slightly larger in all dimensions.

contactcr · 2018-12-10T20:07:43.000Z

I suspect this wont be too helpful but I measured two C8F’s at 380mAh (1x7135)

LH351D 4000K 90CRI
131 lux

Luxeon V2 4000K 70CRI
268 lux

Measured at maybe ~15ft

BlueSwordM · 2018-12-10T20:12:18.000Z

Wow. Having 1/2 the die size REALLY helps with throws.

Then again, the LH351D is a 90CRI emitter, so the results aren’t TOO accurate, but are representative of real life.

gchart · 2018-12-11T04:00:24.000Z

Ok… here’s some data points. I can’t say that these will be consistent with what others may gather, but they should provide a fair comparison against each other since they all came from the same flashlight, same battery, same physical measuring setup, etc.

All tests were done with a Convoy S2 (not S2+) with a smooth reflector, 3.08A Qlite driver, and a freshly charged Samsung 30Q:

Luxeon V2 4000K: 11,898 lux at 1059 lumens
XP-L V6 5000K: 8,604 lux at 1202 lumens
SST-20 Cool White: 17,919 lux at 933 lumens
XP-L HI V3 5000K: 14,670 lux at 1007 lumens
LH351D W6 5000K: 6930 lux at 1161 lumens

These tests done at ~10 seconds and 3 meters.

chadvone · 2018-12-11T04:09:33.000Z

gchart:

Ok… here’s some data points. I can’t say that these will be consistent with what others may gather, but they should provide a fair comparison against each other since they all came from the same flashlight, same battery, same physical measuring setup, etc.

All tests were done with a Convoy S2 (not S2+) with a smooth reflector, 3.08A Qlite driver, and a freshly charged Samsung 30Q:

Luxeon V2 4000K: 11,898 lux at 1059 lumens

XP-L V6 5000K: 8,604 lux at 1202 lumens

SST-20 Cool White: 17,919 lux at 933 lumens

XP-L HI V3 5000K: 14,670 lux at 1007 lumens

LH351D W6 5000K: 6930 lux at 1161 lumens

These tests done at ~10 seconds and 3 meters.

Do you have 5 lights or you swapping led’s?

gchart · 2018-12-11T04:13:39.000Z

That was from swapping LEDs into the same light, driver, battery, etc.

chadvone · 2018-12-11T04:15:07.000Z

Wow, thanks for the effort. I am interested in these but just don’t know where I would use one.

Agro · 2018-12-11T08:59:38.000Z

gchart:

Ok… here’s some data points. I can’t say that these will be consistent with what others may gather, but they should provide a fair comparison against each other since they all came from the same flashlight, same battery, same physical measuring setup, etc.

All tests were done with a Convoy S2 (not S2+) with a smooth reflector, 3.08A Qlite driver, and a freshly charged Samsung 30Q:

Luxeon V2 4000K: 11,898 lux at 1059 lumens

XP-L V6 5000K: 8,604 lux at 1202 lumens

SST-20 Cool White: 17,919 lux at 933 lumens

XP-L HI V3 5000K: 14,670 lux at 1007 lumens

LH351D W6 5000K: 6930 lux at 1161 lumens

These tests done at ~10 seconds and 3 meters.

Thanks!
The comparison to SST-20 is especially telling. V2 gets 11.2 lx/lm while SST-20 gets 19.2. So….in my book it counts as a pure flooder LED.

djozz · 2018-12-11T10:30:51.000Z

Nice direct comparison gchart!

gchart · 2018-12-11T12:36:46.000Z

Agro:

The comparison to SST-20 is especially telling. V2 gets 11.2 lx/lm while SST-20 gets 19.2. So….in my book it counts as a pure flooder LED.

I was pretty shocked by that, I bought 10 of the SST-20 a while back when they were first announced and all that was available was cool white. But I strongly dislike cool white, so I never ended up putting them in anything. I’ve heard the chatter and knew they could throw, but I just didn’t expect the lux to be that much higher, even over the XP-L HI (with the SST-20 still having it’s dome on).

KawiBoy1428 · 2018-12-13T06:38:44.000Z

What if you put it up against a XP-L HI V3 1A 6500k? Seeing how light meters supposedly read/register CW higher?

SST-20 Cool White: 17,919 lux at 933 lumens
XP-L HI V3 5000K: 14,670 lux at 1007 lumens

ImA4Wheelr · 2018-12-13T04:07:38.000Z

Maybe this emitter is better suited for aspheric and recoil lights. I think I read somewhere in djozz's thread that something like 90% of the output is goes forward. Wouldn't that mean less light hitting the reflector (in a reflector light) which would result in less throw?

Agro · 2018-12-13T06:39:04.000Z

ImA4Wheelr:

Maybe this emitter is better suited for aspheric and recoil lights. I think I read somewhere in djozz’s thread that something like 90% of the output is goes forward. Wouldn’t that mean less light hitting the reflector (in a reflector light) which would result in less throw?

The radiant power chart doesn’t seem much different from SST-20-W.

ImA4Wheelr · 2018-12-14T14:29:42.000Z

^

Thank you Agro. When I saw how bright the spill was on the V2 in Post 6, I thought of that comment I read and got excited. Oh well, c'est la vie. Thank you for the response.

chadvone · 2019-01-09T04:23:52.000Z

Just had a chance to air wire one of these up to see how I like the tint. And like you I am very impressed. I don’t have many host but I am wan’t to try this.

I think its gonna go into a Wowtac A2 headlamp. It currently has something around 5000k.

chadvone · 2019-01-10T04:29:56.000Z

Wowtac A2 Stock(guess5000k) Vs. Wowtac A2 Luxeon V2 3000k 70cri

Hope you don’t mind I didn’t want to start another Luxeon V2 thread.

gchart · 2019-01-10T04:46:28.000Z

By all means, post away!

I’m enjoying these LEDs, especially for the price on that Arrow sale.

I should have picked up a 3000K to try, but I feel that might be little too warm for me. I put a 4000K in a Lumintop EDC01 and it’s a great little light. I put some 5000K in a Wuben E05 and Convoy S2.

cadmium · 2019-02-03T05:22:09.000Z

Anyone try dedoming or slicing one yet? I think it may not help throw much, as output seems to behave like a xpg3.