OSRAM CSLNM1.TG & CULNM1.TG 1mm², CSLPM1.TG & CULPM1.TG 2mm²

1. I should pull out my old textbook… Just don’t have it in me right now.

2. There would be a aperture that gave the most output given a specific emitter. Basically best blend of distance and throw.

3. Yes I’m aware but those coatings are not typically used due to their fragiity. The “standard” coating with a good durability is rhodium which I believe is at around 90%. I’m sure the cast and milled ones we use typically are not as efficient.

4. Yes but we don’t buy White Flats to make mules…

Rhodium has around 75% reflectivity in the visible range.
Dichroic coated glass reflectors have the highest reflectivity. This is what Wavien used.

Yeah, the only people using rhodium are the guys that make short arc flashlights because the UV degrades other coatings.
Protected aluminum is the standard coating for non-lamp applications, that’s what I bought.

Rhodium is also good if you like to clean you reflector with a cloth (for whatever reason) because it’s rather hard. You still need to be careful though.

Looks like Mountain Electronics has some Osram Flat White spacers for sale now. Still plan to buy Hoop’s because his are going to come with shim stock for adjusting the beam profile. Mountain Electronics may get me by for a while.

Heads up, the c8 style 30-30 gaskets I grabbed from mountain are for the smaller reflector hole. Like on the c8 op reflector. Wasn’t able to use them as is.

194kcd with CSLPM1.TG in a C8 driven at 7.5A with LD-4A driver.

Interesting result. Almost the same as my C8 with black flat in that made 196kcd but with noticeable bigger hotspot.

CSLPM1.TG / Black flat

But you weren’t driving the black flat at 7.5A were you?

So that is also double the lumens, so 1300-ish? Nice!

In the meantime I wished for a 5000K version of the NM1 and the PM1. I plan to use the NM1 in the GT-micro but I’m also contemplating giving in a few lumens by using a dedomed XP-G2 S4 3D instead.

The black flat is driven at about 4.5-5A with full VTC6. I must say that this led gave me nightmares focusing it and i am not even sure that it is perfectly focused but its the best result ive got so far and decided that 196kcd is enough.

I must add that the black flat is soldered by me on a 3535 board and the PM1 is on 3030 board bought from Led4Power. So almost certainly i lose performance on the black flat just because of my unprofessional soldering job with the black flat :smiley:

Should be close to double lumens for sure, at least from what ive seen from few tests here including yours.

5000k would be nice but i do not mind CW leds so its fine for me. I am not familiar with the micro GT other than seeing it on pictures but i had have dedomed S3 3D and it was very nice warm tint with no green hue whatsoever, it might be nice if you want warmer tint compared to the NM1.

Need some explanation from someone more intelligent than myself. I installed a 2mm2 Osram in a Cometa and when I was on max power the light dropped to the lowest setting within 5 seconds. Can someone explain what is happening? Put the XPL-HI back in it and it was fine.

Quick guess - Cometa has a low temp threshold, and the Osram is lower Vf than a XPL HI, so, the amps goes way up - probably too much for the LED anyway, and therefore the heat jumps way up fast, tripping the temp threshold which the XPL HI either can't do or takes longer to do.

Other guess: I have had problems with the 2mm white flat in combination with FET+7135 drivers (like in the Cometa). Perhaps it has something to do with the extreme low voltage (lower than any white led before). It may even have killed the 7135 chip but that may also have been accidental.

Having problems with 7135s or linears? Switching full regulation is a O:) way. You may also want to try a low current cell or avoid charging cells to the max. Try and measure first, avoid problems.

Did anyone measured an effective max current value for the CSLPM1.TG in a C8?

I still can’t figure out how a rectangular gives such a perfect perceivable hotspot. I though you would have seen pie slices of varying intensity :expressionless:

You must see it as this: in a reflector light every spot on the light source (the die) is projected smeared out in a circle around the center of the hotspot. So the center of the hotspot receives light from the center of the die, and any circle at a given distance from the center of the hotspot receives the light that comes from the corresponding circle around the center of the die, but smeared/evened out. So the shape of the light source is irrelevant, it will be projected as an sum of evenly illuminated “circles”. This is sort of what happens to the hotspot, but the corona can do things a bit different it seems that in contrast is a bit more dependent on the die shape, like showing “petals” when the die is square.

This is the best I can explain this with the limited english that I know, explaining technical things in a non-native language is pretty challenging.

Thanks, I think it makes sense :slight_smile:

Just received some goodies from L4P…
So my B158B now does 290kCd @ 10m with its 1mm² WF and LD-4A driver set to 4,5A

And my Cometa does 285kCd @ 10m with the same setup.

I just love the clean beam of the Cometa. I’ve coated the black plastic washer with some paracord fumes a while ago and it does make some difference !

Looks good, how do you do this? I don’t know what paracord fumes are.

This maybe??