W2 blue datasheet?

Anybody know where it is? Can’t find it. I might just be blind though.

Is that the Osram KB CSLNM1.14?

No, the other one

I’d assume that it’s a KB CSLPM1.14.

I have one in an Emisar D1 Mini.

I haven’t found it on Osram’s product selector:

You would think right? I can’t find it either. I could’ve sworn I had one at some point but idk

I’ve tried looking for any emitter osram’s ever made that would match the description, in case it’s under a different model number for some reason, but no luck. It looks like you think it would look. More or less. JJ has a picture of one on his site here. Looks just like one I got from Hank. Except not as scuffed up as that one in the photo.

The blue W2 would be CSLPM1.14, which seems to not be an official product, just something Hank is able to source (possibly due to a supplier being able to piggyback those orders on other large custom orders). IIRC, same goes for the W2 red (CSLPM1.23) vs the W1 red.

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Hank’s W2 blue is definitely pretty intense. It makes some green objects fluoresce, which was a surprise for me when I turned it on. I have a few things which either go opaque black or opaque neon green under the blue light, but switch it to red and the objects appear completely transparent. It’s a little trippy in red-blue strobe mode.

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It seems to me like it is a specially ordered emitter, the CSLPM1.14 isn’t listed anywhere on osram’s website. It wouldn’t be any harder for osram to manufacture it. The die is 450nm, same as a the pump die of a white CSLPM1.TG.

It does track, the die has to make the white (actually yellowish) phosphor fluoresce and 450nm blue is high-enough energy to do that.
I’ve used a light with a 450nm blue emitter (was a failed dedomed of a LH351D where the phosphor separated) and it was pretty good at making things fluoresce (even some minerals) and charging up GITD phosphor, second to my 365nm UV-A S2+, but it also made my eyes feel funny after a while so I ended up 519a swapping it.

I have a light like that too, where the phosphor came off. I’m pretty sure mine isn’t 450nm though, since it’s intensely violet with frequencies I assume go into the ultraviolet range. This blue LED is different.

My separated-phosphor LED is a XHP50.2. It looks like this:

Viewed from a slightly different angle, it has a cool rainbow effect.

When I turn the LED on though, it gets really intense and bad for the eyes. The camera can’t pick up the violet shades very well, but this picture should still be enough to give an idea what it looks like…

Getting a photo with the LED on was tricky. I had to shine it through a projector lens onto a big sheet of blank paper, then take a picture of the paper.

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The LH351D had the same, it turned fully blue once I scraped that stuff off with a toothpick. Sounds like it was the exact same thing.

The datasheet for the XHP50.2 would make me think that the pump is also a dominant wavelength of 450nm, based on the blue spike. I don’t have a spectrometer sadly but I’d be interested in seeing the spectrum with the rainbowy stuff, maybe it is emitting some red and the difference in frequency makes it so the eye can’t properly focus both colors simultaneously.

Oooh that’s neat. Cool photos.

Have you ever taken a real good look at Hank’s w2 blue up close, under light though? It’s not as vibrant as that, but its similar if it’s at the right angle under the right light. You can see hints of that rainbow effect. You have to look real close. It’s nothing like those photos, I tried to take some myself of the w2 but I couldn’t get a picture worth showing. The thing is too darn small. Maybe if you line a few up next to each other you’d see it lol. But it is there.

I just had a thought- anybody ever seen those remote phosphor type LED bulbs? The plastic ‘bulb’ part of the light has the LED’s phosphor, if you break it open it’s just blue chips inside the bukb. I wonder if the w2 blues were used in something like that. Or maybe they were a special order, idk. Anybody have the w1 version from convoy or KD or whoever and a w2 blue? How do they compare

Also, while searching through datasheets I found out that the “T” in KW CSLNM1.TG indicates that the led is, and I quote, “greenish cold white” :grimacing:
Has nothing to do with anything but I think that’s kinda funny

I haven’t looked very closely at the W2 blue yet. Will have to try that sometime.

About it being designed for remote phosphor lights, I doubt it. There’s no reason to optimize a LED for surface intensity when it’s intended to be used with a remote phosphor. However, if I understand correctly, the W1 is designed for use as the light source for video projectors… which explains why it’s so small. Gotta have a point light source for that, or as close to a point as you can get anyway. This also has the side effect of making it ideal for throwy torches.

Maybe some kind of lep style thing with a focused blue led instead of a laser? Idk. Kind of a stretch. Hmm…

The deep blues are all for horticulture. You’d probably want a little bit of UV in with the blue. But just a little. The kb cslnm1.14 isn’t deep blue. I think I’ve seen the w2 labelled deep blue before. Not sure if that means anything, just spitballing.

It is just a blue chip without phosphor though, isn’t it? Just tuned a little in a way to not be quite as UV as that cree is

Yeah, it’s definitely intense. Not far off a regular W2, except it doesn’t throw as far. In a multi-emitter light, puts out enough blue to even cause mild fluorescence of some stuff, despite it having a very sharp spectral peak. Extremely fun LED.

Most likely Hank has a connection with a supplier who places special orders, it’s just not produced in enough volume to be an official product (which implies some minimum levels of supply etc.). The PC green are available as both W1 and W2, but red is also only officially available as W1.

There’s no official datasheet for it, although specs are generally in line with the difference between the white and blue W1 IIRC, and spectral output is pretty much the same, energy/heat seems in line with W2 vs W1 too.

What TK said, Osram’s suggested applications on their datasheet include projectors, vehicle, and stage lighting.

Funny thing… a theatre friend just asked me for help making a projector on a vehicle on a stage. :stuck_out_tongue_winking_eye:

So, of course, I told him to use an Osram W1. The idea is for a little toy car on a track to go around projecting shadows in an art installation, telling a story with the shadows. And the W1 is the best LED on the market for that sort of thing.

The caveat is that the scene must be designed so there is never a line of sight from the audience to the LED. At full power, that thing has a surface brightness of 900 million lux… 900 lumens coming from a surface just 1mm square. Really, really bad for the eyes… so he’ll have to make sure nobody can see it.

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Right, that’s why I bring it up. Osram’s portfolio of LEP+LED vehicle headlights, projectors, and stage lights seem like the most obvious use case for these. Either as a complement to the blue laser diode, behind the same remote phosphor, or as a replacement for it in markets where seasonal temperatures or regulations prevent the use of actual blue laser diodes.

I’m just speculating. That would explain why they don’t offer it as a standalone product, or have a datasheet, even though it seems like such an obvious thing for them to make. An exclusive contract with BMW or something like that.