GB | 515nm Diodes - Payments Stage Starts at 10th July

Well I tested the other diode for myself and to help anyone looking at these. Give back when I can. All the pics were taken with an older Olympus 500UZ which for some reason does a really good job with color differentials.
By the way, this is my Ophir setup on the top of my chest freezer that needs to be cleaned and the heat-sink used that I custom made quite awhile back soon after I started and no this isn't where I actually used them:




Yup, dual color Was able to fit a different color panel on each side. I used to have a whole build thread on it but somehow it went bye-bye It has various hookups so you can also use a MTM to read output with separate switches for Ophir and each individual LED. Don't need the LED's if using the MTM jacks. Wires off connector to diode went to my Variable DC power supply (duh):


Here's pics of the dot (with the GB lens) and after trying every different lens I had I realized that you do still have a bar but a lot less pronounced with a 3-element as expected:


I didn't bother with any shots of the first diode because it looked the same to me as my laserbtb 515nm 41mW regardless of output but I got lucky on my second diode This is my reward for the 9mm blowing. This one has a blue shift regardless of output

This is the only pic of the first diode that doesn't have the blue shift. You can tell when you compare it to the pic below as it looks like the laserbtb 515nm color on the left:
















I crossed the beams and nothing bad happened lol


Those pics were taken obviously with the laserbtb 41mW 515nm on the left and the GB 515nm on the right which I set to the same 41mW. I could still see the difference in color even setting it to 100mW!
Plop-plop fizz-fizz oh what a relief it is

The diode sure doesn't seem to put out much heat at all and I once again took this one up to 360mA and it didn't show any issue. It also was more efficient than the other one using the same GB lens:
5mW at 47mA
30mW at 88mA
50mW at 122mA
80mW at 188mA
90mW at 217mA
100mW at 250mA
115mW at 300mA (I forgot to write down the 360mA one).

Was kind of in shock that it held it's blue green color with a lot of power. Now we cross our fingers that the one coming for Trend has a blue shift too. Hopefully some of you can also test for this but unless you already have a normal 515nm or a couple of the GB diodes to compare it might be really hard to tell. Will say that I used the 3mW 520nm that I had bought from Alex with the same setting against the first diode and there's a much greater difference between this blue shifted one that the difference between the first diode and the 520nm. It was VERY easy to see the difference in person but the pics did pretty good too although those are all laserbtb 515nm to blue shift diode.
I even swapped back to the first diode and couldn't see the difference between it and the laserbtb until I switched back to the blue one.
Haven't decided what to put it in yet and I don't feel in a hurry since I got pics taken.
By the way, nope, not selling it. I wouldn't care as much if it was only 5mW or less at that color but now it means a lot more.
Really hoping you guys get lucky too but I'm especially rooting for Trend as he wanted one with hopefully a blue shift at 5mW if I can get it set that low.

Decided today was the day to set the BlitzLinear drivers I had purchased from Crazyspaz and host them.
So, I present to you "Happy Happy" and "Joy Joy". "Joy Joy" is the 110mW <515nm wonder diode



515nm at 104mW and <515nm at 110mW:




Pics don't do the difference justice

The 515nm was set at 300mA for the 104mW and the <515nm was set to 275mA for 110mW.
I ran both on for over a minute with no issues and no change in output and they also didn't seem to get even warm. I am certainly not suggesting anyone else run them like I am but they sure seem to be robust.
Tries running with a single fully charged 18650 (using (2) 18350) and just got a dot that wouldn't register on my Ophir. Just a bit less voltage and you get nothing.
It's actually nice that I got the testing done and the builds finished before Trend's diode arrives so now I have a reference with the color shift to go off. If I turn the 515nm on and then off and then turn the <515nm on the difference is enough to still see the blue in it.
Again, hope this helps everyone else.

A couple of nice looking builds there Pman, I hope you are joyously happy with them! :crackup:
I'm happy to see that these diodes don't seem to shift wavelength at the higher powers.
BTW - Thanks for the extensive testing, it's much appreciated.

Welcome. Some pics show the color difference better than others. Hopefully mine wasn't a freak and others will get one like it. Going to be harder to tell though if you don't already have a 515nm to compare it too.
It was requested that I do a <515,515,520 532nm side by side but I have to go get some heat on my back/kidney and I put the stuff away. I probably have the 520 in the 100mW range but I'll have to look through my stuff. The 100mW 532nm is easy to come up with but was also thinking depending upon what I have I might be able to put up similar brightness units using that calculator to make it easier to see the difference as 532nm is the brightest of the 4. I would need:

<515nm = 110mW
515nm = 104mW
520nm = 90mW
532nm = 80mw

I can come up with 3 out of 4 for sure and use whatever the closest 520nm I have to 90mW or manipulate the output possibly with a different lens and even through in my 589nm which will be probably be about 1/2 as bright but who cares, it's a 589nm So hate to admit I would love to have one of your more powerful 589's Bow. I think the highest I've seen on mine was about 80mW (which should not be complained about). Would like to have a 593.4nm at the kind of output our 589nm are. 635/38 have a hint of orange but not enough to get the juices flowing although it's a nice red to go with the standard 650/660.

I noticed messing with the "Perceived Brightness Calculator" what I see between the 515 and my <515 it looks closer to putting in 500 and 515 or even a point or two lower. Yes, I realize it's probably more like 510-512 but the calculator doesn't really show it. I don't have any plans to send it out to be tested. Not interested in it leaving the case it's in at least for now. Honestly, I've spent a lot of hours messing around with these 2 diodes and putting this information together pushing the envelope and taking the chance of blowing them to help others figure out what to do with theirs and I don't want to push my luck putting them in the mail.
I will try and answer others questions if I can but I'm not taking either of the builds apart now that they are done even though it would be easy enough. Still stings a bit having the 9mm blow.

EDIT:

Ok, here's the shots I took with and ended up using units with about the same output rather than brightness as I would have ahd to go down to 72 mW on the 520nm otherwise.
<515nm = 110mW
515nm = 104mW
520nm = 117mW
532nm = 112mW
589nm = 82mW (added the 589nm because I can). The 589nm has a very "sharp" beam so even though it has less output and has less perceived brightness than the others it can hold its own:
It's not going to be as easy to tell the differences as it was with just 2 of them as they are really bright


You can see the fog machine on the left but this is the room before fog and the wall is about 20 feet away:


Before fog. Notice the dot on the second one (515nm). For some reason with the same lens the <515nm (first one) doesn't have it almost at all (and yes I tried multiple lenses with both):




Way too much fog:


You can see the difference between them a bit better in this shot looking at the reflections one the carpet:


This made me realize that I really should do a rainbow soon. Too wiped out at the moment though and they are all back in their cases conversing in some unknown wavelength. Hopefully no uprising today.

Has anyone else received anything yet?

Not yet! Will do spectro tests as soon as I get it though. You have me really excited.

Nothing at all, just checked Israel post again - nothing, USPS tracking - nothing.
I received my tracking number on 8/28, and nothing since.

I've just about written this one off, if it comes, it comes; it'll be an unexpected surprise.
I think I may just go the eBay route like 10fenny, at $20 it's not a bad deal, and I'll probably have it before the snow flies!

My tracking number says this now.

"The item is on the way to the United States of America. last updated on 08/09/2015"

I was beginning to think I rubbed everyone the wrong way as people were't commenting on the stuff I posted.
Styro that sounds great. How many are you supposed to be getting? I know it's not realistic for everyone to get a lower wavelength but it sure would be nice if mine wasn't just a fluke.
UGH Bow Contact Eitan again. Theer's a bunch of listing on Ebay for them but they are also a bit confusing. Don't like how they mention a bunch of wavelengths. I'm thinking of buying another one myself. Comparing my regular (2) 515nm units to a 520nm you can see a difference but not as great as the lower wavelength one to 515nm.
I checked and don't see yours (Trend) in the USPS yet but the way mine worked it was 2 days from that same notice to hit the states and then after it hit here it was 2 days longer to my house. IF it goes that way it would likely be Monday. As soon as I get it I'll see what's what with the diode and driver. I expect to be able to set it for the 5mW and send it out that day or the next. No promises though
I still can't believe I still have a blue shift pushing it that hard.

Thanks for doing all that testing!

I always had the idea that these and the PL520 were different bins of the same diode. The higher WL/power ones were sold as PL520 and the lower WL/power were sold as PL515. I'm still not sure, but your tests support this theory, as the current vs. power curve is very similar to PL520's.

Glad to see current doesn't red shift it much, I thought it would.

Pman, yeah go ahead and and order a few more and just send me the lowest binning one. I don't mind at all. Hehe :na:

Got mine on a mini AAA mag build... pushing it to 129mA haven't tested power I'm happy with where it is, sweet little beam loving the color. Aixiz lens 3 445nm love the color wished I would have bought 2. I would say great job @The joker thanks, but man please put these things in a little bubble wrap next time.

jander6442 said:

Got mine on a mini AAA mag build... pushing it to 129mA haven't tested power I'm happy with where it is, sweet little beam loving the color. Aixiz lens 3 445nm love the color wished I would have bought 2. I would say great job @The joker thanks, but man please put these things in a little bubble wrap next time.

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Thanks for the support ! :beer:

Will do that next time

I would say you are likely around 50mW range Jander . Although it may not sound like much that's lots of green goodness to see the beam with quite a lot of light. Again, don't anyone else feel like they should push theirs hard like mine. I rarely run my units. Still, it's an encouragement to run them without issue that strong at 3.5 times the rated 30mW output.

**Take a look at the new 1W 520nm on DTR's site 1W NUGM01T:
https://sites.google.com/site/dtrlpf/home/diodes/1w-nugm01t-520nm-laser-diode

I am interested in some of these diodes. I have not participated in a GB. What is the time period expected before ultimate delivery?

Thejoker301 said:

Hi Everyone ,

I am glad to open this GB.

This GB will for the 515nm Diodes that were disscussed here : http://laserpointerforums.com/f55/gb-515-nm-laser-diodes-92426.html

These diode will be going for $28 per diode.

Update - 26th of May - More diodes are available to order :

* 515nm - $28
* PLP520 520nm - $62
* PLPB450 450nm - $30 ( This diode does around 2-2.4W at 1.8A )
* 9mm 445nm - $40

We got a few option about shipping.

Best idea that I think of is that the pack will be sent to someone in the US and he will ship all US and Canada Orders. So it will be much faster and cheaper.

If there will be a lot of orders from other places ( Europe ) we might just split the pack and I will ship the rest to Europe.

Please write here if you want one.

Spreadsheet : https://docs.google.com/spreadsheets/d/1XDfgqBL25ztwcYhI9jMxz3IehztBqxGrAmyh8W93c8M/edit?usp=sharing

Add yourself to the spreadsheet please.

:beer:

Update : We got some prices on more diodes , if you want one just note it in the spreadsheet.

Closing date is the 30th of June.

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Andrew124C41 said:

I am interested in some of these diodes. I have not participated in a GB. What is the time period expected before ultimate delivery?

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LOL:crackup:

First off that's funny because this group buy is "over". Secondly we have quite a few people still waiting, myself included.

Supposedly these diodes can be found on ebay for about 20.00 now. Not 100% sure they are the same diodes. They do have the same model name though.

Osram pl515 30mw