4 emitters tested: Cree XP-E2, JR 3535, small die Nichia 219B, Luxeon Rebel lime colour

Is there a purpose for the lime (green) color? Other than it looking like a glow stick?

Either way, thanks for all the research…very cool!

Ah, you beat me to it; I have a single PC Lime emitter waiting to go into a SK58, and a triple — one lime and two PC ambers also waiting. The latter is to make an almost-no-blue-light with better color rendering to supplement the PC ambers we use at home at night. (the low/no-blue evening light is our cure for insomnia; YMMV on that issue)

IIRC this is the article you need: DrJones - Flashlight Optics - Dome, Dedoming and Throw

Thanks for posting this info djozz!

Thanks. Amazing effort. Its hard not to like the lime green.

TY wight

sorry I did not answer your question, I understand that DrJones' lecture made it more clear?

> dedoming (if at all succesful with Rebel leds)

I put four of the amber PC Rebel (10mm square boards) into SK68s and #3 zoomies.
One of the four I accidentally dedomed without even noticing it, probably a momentary shake of the soldering iron tip.

It came right off — found the dome later — and left a very clean emitting surface that zooms/floods a bit better than the domed ones.

Thanks Djozz. This thread slipped by me.

I gotta say. That is a lot of lime you got there. :D

Thanks for doing this great test. That Lime emitter looks really interesting!

Don’t you watch TV? These are used for hunting ghosts and bigfoot. :stuck_out_tongue:

Thanks Hank, this is good to know.

I’ve been a little hesitant to attempt dedomes with these somewhat pricey colored LEDs. Sounds worthwhile, although I’d be looking at deep/photo red right now and lime green, so it’s not exactly the same thing… but it sounds like the dome wasn’t really on there that securely from what you say.

Are you joking or do they really use lime green on the TV shows? I’m just curious. EDIT: for clarification I have not seen the TV shows, so I don’t know what it looks like. That’s why I’m asking!

Sometimes what one sees is from a camera using an NVD - Night Vision Device - which renders the captured colour a sort of greenish monochrome. It would not be said to be lime though.

I’ve edited my post to add clarification. I see now that I was really very unclear, sorry! I can recognize the footage you describe for what it is. I just thought that maybe powerful lime-green flashlights were in style for ghost hunters now or something. I have not seen those shows or previews or anything.

Nice review!

Here I added the XPE2 for comparison:

Thanks Djozz!!!

Love the comparisons!
So the NIchia is doing a pretty good job!?

Now looking forward to your new XPH test from intl.Outdoor.!!

It is said that if you had two objects (one red and one green) that appear to have equal brightness in daylight, at night the green one will appear much brighter.

Yes djozz. It did. I tend to forget enough of these things over time that I am unsure what was meant.

great work as always djozz. i was just wondering about benefits on dedoming, and i think u should see an increase in throw with an successful dedoming

When I accidentally flicked a dome off, I’d probably gotten the whole little square board quite warm while trying to solder wires to it.
Not enough to change color or look burned but odds are the dome was thoroughly warmed before I knocked it off.

(I was putting the little 12mm square Luxeonstar boards into #3 zoomies and SK68s, likely with very little heat being conducted away, when I did that)