Three Oslons tested: 1) latest gen. Oslon Black Flat 2) SSL80 4000K 92CRI latest gen. 3) SSL80 4500K 96CRI 1 gen. before latest

Perfect, thanks.
Unfortunately I don’t have an integration sphere to compare the lux between LEDs…
Do you think just running them at 4A and picking the one that shows highest on my luxmeter will work just as well?
I’m not trying to find out the lumens, or the curves like djozz’s graphs, just the one with highest intensity, since they would all be the exact same led.

Would you do it if I paid you? :stuck_out_tongue:

There must be someone closer to you who can reflow leds?

I thought maybe you would enjoy reflowing a bunch of LEDs and keeping most of them, since I would only want like the top 3 or something, haha

I usually just buy my LEDs from mtn electronics, he does reflows, but he doesn’t have any osram LEDs.
Maybe I should ask him to get a bunch?

Good idea, I’d like to be able to buy some!

You don’t need special equipment. A stove top and a pie tin will do. Pre tin the star using a soldering iron and heat in the pie tin until the solder melts and the led settles into place.

Well, I think someone who’s done if for years will be able to do it better than me…
I don’t want some ugly burnt piece of copper, I like how clean the ones I buy are :slight_smile:

Yeah I toasted a few but the learning curve is pretty steep and if you practice on the ones you want to replace it doesn’t come at any great price. Hint: it doesn’t take enough heat to burn the silk mask. Waiting sucks, I have a bunch of LEDs and mcpcb’s and the hardest part is remembering which direction to install them.

@ Enderman & The_Driver: in Germany the flat was tested at 250cd mm^2, but that was including optics. Without it should be even better.

@ Djozz: no worrie, no hurrie mate. Just make sure you get enough of them to satisfy my modding needs :wink:

It looks as if this Oslon will be able to take the pencil beam throwers a good bit further the the XP G2’s. :+1:
and without tint shift!! :+1: :+1: :+1:

Grtz
Nico

I wouldn’t count on them reaching much higher values. Photographic optics like the one he used in the test have very little transmission losses (should be in the single digit percent range). The problem with his measurement of the LED without optic is that he didn’t account for any of the stray light from the LED. It bounces off of the surroundings and also hits the sensor of the light meter which makes the measured value higher than it really is.
Using an optic reduces the amount of stray light and the the much higher measured lux values greatly reduce the effect of any remaining stray light.

I would use 250-255cd/mm^2 as the baseline for any calculations.

I emailed MTN electronics, he said he will look into it, try to get a few for himself first and then see if he will sell them.
Hopefully he will :slight_smile:

Very good news, thanks!

Great! Thank you, Enderman.

You’re welcome :slight_smile:

Hey, interesting emitter!
Just requested a quote from RS (UK) for 5 pieces of Black Flat v1.2 5500K, but i read Djozz is waiting for v1.3 high CRI?
Either way, subbed to this thread… :slight_smile:

What does “v1.2” mean?

Ehm, not sure what you mean, Jerommel. AFAIK the current Black Flat is the latest one, it only comes in one tint and there is not a new version announced.

I am waiting for the high CRI 3rd generation Oslon Square (is out now but no one sells it in small quantities yet), if that is what you refer to?

Ah, yes, that must have been it…
I sometimes mix up the types, names and numbers in my head with all these emitters…

LUW HWQP is the 2nd version of the Black Flat, “version 1.2” as they call it in the data sheet.
LUW H9QP is version 1.1

So even though digikey has a 2000 minimum order I found it on mouser for $5 a piece.
http://ca.mouser.com/ProductDetail/OSRAM-Opto-Semiconductors/LUW-HWQP-8M7N-EBVF46FCBB46-8E8H/?qs=sGAEpiMZZMt82OzCyDsLFM%252b7yORtb%2FhA55GIye8lCf8%3D
It doesn’t look like you can order a specific bin.

MTN electronics hasn’t updated with any info about stocking these yet , so if anyone wants to reflow it on their own and test it out go ahead :slight_smile: