No, it doesn’t need to be focusable. Something simple where the head has the right diameter and can be removed without removing the LED. Probably a 1x 18650 host.
Did another test, this time with a small RLT collar.
The LED reached its peak sooner, at about 5.3A instead of 5.6, likely due to the additional heating of the die.
About a 2x improvement from the small collar.Both graphs compared:
Wow!
So sad i missed that collar deal a year ago or so…
How much lumen would one get with 1mm white flat at 8x7135 ? im thinking of s2+ with this led for a sort of tube thrower…
Enderman: Th558:So is the XPL HI dead now?
For intensity yeah.
It does have higher efficiency and lower colour temperatures though for people that want that.I changed the 2mm2 white flat (so not the throwier 1mm2 version that has a bit too low output I think for this light) in my mini-GT for a dedomed XP-G2 3D because of the much better tint, I do not like the very cool tint. It costed me just 15kcd.
The XP-L Hi comes in many tints but I was unfortunate to never have found a tint that was really great.
Only a loss of 15kcd? How about lumen loss? 500 lumens? Did you ever get s chance to put a 1mm flat in the same light? How much more kcd did you get?
Thanks a lot for these two tests Enderman, especially the one with the small collar!!! The latter is very relevant to me as I plan on having a small light with this configuration at some point in the future.
I have all the needed parts except for the body of the light. It will be a compact light that showcases what is possible with LEDs. It will also look cool because there will be a clear cylinder around the collar instead of metal.
You’re welcome
Looking forward to see what you build!
so 1mm2 with collar is as good as LEP?
but with considerable more lumens
Yeah, with a collar it is significantly more intense than the LEPs found in retail lights like the L2K, W10, W3.
Even without collar it comes pretty close to LEP performance.
But the LEPs in those retail lights are much less than theoretical maximum for an LEP.
How much lumen would one get with 1mm white flat at 8x7135 ? im thinking of s2+ with this led for a sort of tube thrower…
About 700 according to djozz’s test on the first page.
polarweis:How much lumen would one get with 1mm white flat at 8x7135 ? im thinking of s2+ with this led for a sort of tube thrower…
About 700 according to djozz’s test on the first page.
Also an S2 would make more sense than an S2+ because of the deeper reflector (also use an SMO of course)
EDIT : that is not quite true, as said by The_Driver. You’ll have a smaller hotspot but a bigger corona and not more Candela.
Enderman: polarweis:How much lumen would one get with 1mm white flat at 8x7135 ? im thinking of s2+ with this led for a sort of tube thrower…
About 700 according to djozz’s test on the first page.
Also an S2 would make more sense than an S2+ because of the deeper reflector (also use an SMO of course)
oh i didnt know that thanks! So i know intl sells centering rings for the 1mm flat white but only for 7mm reflector hole. what should i use with a 9 mm reflector hole?
No. A deeper reflector just makes the light longer, it does not increase throw in a meaningful way. It does make the hotspot smaller though.
I just installed CSLNM1.TG in s2+. The led is driven at 4.1A and it has 32500cd throw. Not sure how good this results is but this is what i got. I must note that i did the reflow and it is a sloppy job since it is on a XP sized board.
No. A deeper reflector just makes the light longer, it does not increase throw in a meaningful way. It does make the hotspot smaller though.
The S2+ reflector is very short though.
Deeper reflectors also give bigger coronas.
The_Driver:No. A deeper reflector just makes the light longer, it does not increase throw in a meaningful way. It does make the hotspot smaller though.
The S2+ reflector is very short though.
Deeper reflectors also give bigger coronas.
It’s all relative
Yes, the light, that is missing in the hotspot and the spill, has to go somewhere.
Jerommel: The_Driver:No. A deeper reflector just makes the light longer, it does not increase throw in a meaningful way. It does make the hotspot smaller though.
The S2+ reflector is very short though.
Deeper reflectors also give bigger coronas.
It’s all relative
Yes, the light, that is missing in the hotspot and the spill, has to go somewhere.
The corona is bigger because the deeper reflector is narrower near the LED.
(Deeper reflector is a smaller size parabola)
so bigger corona smaller hot spot.
so smaller hot spot but not more candela because less light is going to the hotspot and more to corona?
Will take few in a few hours, just waiting to get dark outside
I do not have any C8 with xpl hi but have one with Luxeon V2, here is picture side by side of those two.
Left C8, right S2+
32500 kcd is very respectable for a 20mm reflector, well done!
so bigger corona smaller hot spot.
so smaller hot spot but not more candela because less light is going to the hotspot and more to corona?
Candela is only influenced by the front surface area of the reflector (as seen from the position of the hotspot) and the luminance of the LED. The depth of a reflector for a given outer diameter has a neglible effect on the front surface area (because the area of a circle increases with the square of the radius).
32500 kcd is very respectable for a 20mm reflector, well done!
How does that translate to meters of range? I’m a tint snob and know little to nothing about candelas, lux etc. so forgive me my ignorance.
polarweis:so bigger corona smaller hot spot.
so smaller hot spot but not more candela because less light is going to the hotspot and more to corona?Candela is only influenced by the front surface area of the reflector (as seen from the position of the hotspot) and the luminance of the LED. The depth of a reflector for a given outer diameter has a neglible effect on the front surface area (because the area of a circle increase with the square of the radius).
Thank you very much for that explanation
I’ll edit my post so there’s no confusion for other members