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Old 08-18-2015, 05:52 AM #465
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Default Re: NUBM44 6W+ 450nm Laser Diode

I'm waiting again for mine ...
So there is not so much difference between the two cells.
I expected a greater difference ...


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Old 08-18-2015, 06:08 AM #466
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Minamoto Kobayashi View Post
I'm waiting again for mine ...
So there is not so much difference between the two cells.
I expected a greater difference ...
That is a good difference.
From a full charge the Panasonics are down to 7.4v in 10 seconds but the LG's are holding at 7.75.
That's percentage wise much better as well.
The LG's will survive longer and will maintain minimum driver voltage to a lower discharge voltage.
UPDATE:
After further testing with older NCR18650pd and other cells it's become apparent that INR's are a must for the NUBM44 and NUBM07E or any of the 4 watt + diodes when using the SXD drivers and just 2 cells in series if you want to maintain full power for more than 60 seconds.

Last edited by RedCowboy; 08-23-2015 at 09:19 AM. Reason: many a typo
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Old 08-25-2015, 06:45 AM #467
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Default Re: NUBM44 6W+ 450nm Laser Diode

I tested my NDG7475T 1.2W 520nm green against my NUBM44 6 watt blue laser tonight side by side, both have two inch diameter lenses in an expander setup and looking at the two together, the NUMB44 is wider but the brilliance isn't that far behind the 1.2 watt 520nm diode. I expected them to be further apart. From this I've got to admit, with an expander, the NUBM44 is a very good alternative to a one watt 520nm laser diode at less than half the cost for the diode.



The camera picked up the blue better than it should have, it actually appears a bit brighter than the green when the reverse was true. I didn't realize it at the time, but I had the thin edge of the green towards the camera, this makes the blue appear several times wider when it is really more like 2X the width of the green. To get an idea of the difference of intensity, look at the two beams about half way out by scrooling the screen so you can only see the second half of the green beam, that's about what they looked like in relative intensity, although my camera made the blue look a bit violet, in person it is quite blue.
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Old 08-25-2015, 09:29 AM #468
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Alaskan View Post
I tested my NDG7475T 1.2W 520nm green against my NUBM44 6 watt blue laser tonight side by side, both have two inch diameter lenses in an expander setup and looking at the two together, the NUMB44 is wider but the brilliance isn't that far behind the 1.2 watt 520nm diode. I expected them to be further apart. From this I've got to admit, with an expander, the NUBM44 is a very good alternative to a one watt 520nm laser diode at less than half the cost for the diode.
Have you tried a NUBM07E yet? You will never look at 445nm the same LOL
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Old 08-25-2015, 03:30 PM #469
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Default Re: NUBM44 6W+ 450nm Laser Diode

Haven't read anything about it but now that you mentioned it I just went and looked, it beats the pants off of this NUBM44 for brightness when driven to 5 watts out reaching 470nm... OK, I'm going to buy one of those next

Thanks!
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Old 08-25-2015, 09:25 PM #470
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Alaskan View Post
From this I've got to admit, with an expander, the NUBM44 is a very good alternative to a one watt 520nm laser diode at less than half the cost for the diode.

And 5x the power consumption..........
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Old 08-25-2015, 09:37 PM #471
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Alaskan View Post
I tested my NDG7475T 1.2W 520nm green against my NUBM44 6 watt blue laser tonight side by side, both have two inch diameter lenses in an expander setup and looking at the two together, the NUMB44 is wider but the brilliance isn't that far behind the 1.2 watt 520nm diode. I expected them to be further apart. From this I've got to admit, with an expander, the NUBM44 is a very good alternative to a one watt 520nm laser diode at less than half the cost for the diode.

The camera picked up the blue better than it should have, it actually appears a bit brighter than the green when the reverse was true. I didn't realize it at the time, but I had the thin edge of the green towards the camera, this makes the blue appear several times wider when it is really more like 2X the width of the green. To get an idea of the difference of intensity, look at the two beams about half way out by scrooling the screen so you can only see the second half of the green beam, that's about what they looked like in relative intensity, although my camera made the blue look a bit violet, in person it is quite blue.
Which one is brighter without the expanders?
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
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Old 08-25-2015, 11:30 PM #472
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Default Re: NUBM44 6W+ 450nm Laser Diode

520nm is brighter with or without an expander, just that my camera made the blue look brighter than it was to my eyes. Even if you are pushing 6 watts out at 445-450nm using a NUBM44, the NDG7475T at 1.2 watts is noticably brighter but I'd say they are both in the ball park with one another, the NUBM44 coming up behind a bit, but nothing too shabby. For the money, I think the blue NUBM44 wins, and again for the money the NUBM07E at 4 watts out, due to its price, is close enough in brightness to compete with 1.2 watts of 520nm too. Of course it isn't as bright as 1.2 watts at 520nm, but the diode is so much less expensive it sure looks like a good choice. Use the link at the bottom of my signature to check how wavelength and powers compare from one to the other to see. If the beams are within 25 percent of one another as far as perceived brightness but the, for example, 75% as bright diode is half the cost... that's a motivating factor to go for the lower priced one in my book, even if it isn't quite as bright.

All of that said, dollar for dollar maybe it's a wash and costs the same for the NUBM44 or the NUBM07E and the NDG7475T if you have to buy a better host to handle the higher current and heat dissipation requirements of the higher wattage diodes

Bottom line, color counts too, blue is beautiful if you can get a powerful enough diode which both the NUBM44 and the NUBM07E diodes are capable of producing. PBS cube combine two of those blue babies for even more savings for the amount of light they produce and make a 1.2 watt 520 nm green diode look dim! Better have a big heat sink with some good fins on your host and use 26650 or 32650 batteries though
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Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

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Old 08-26-2015, 01:15 AM #473
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Default Re: NUBM44 6W+ 450nm Laser Diode

Thanks, that's exactly what I wanted to know

Edit: can you see the beams in daylight?
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low 445nm: C6 from Survival Lasers (1351mW pk|1289mW avg|1100mW rtd)
high 450nm: NewWish (12.6mW pk|5mW rtd) | Dominator by Blord (3010mW pk|2779mW avg during 5min)
462nm: 501B by Atomic (1507mW avg)
473nm: BWB-10-OEM labby by CNI (10mW rtd)
~462-476nm "Tunablue" by Atomic (1.5W pk)
low 520nm: MXDL pen by DTR (31.6mW pk|28.8mW avg)
high 520nm: Laserlands (8mW avg)
532nm: NewWish (28.6mW pk|26.8mW avg|10mW rtd) | Dapper (30.3mW pk) | Classic (120.0mW pk|103.1mW avg|100mW rtd) | "The Green Box" by Atomic (176.7mW pk|140.0mW avg)
589nm: Spartan from Dragon Lasers (58.4mW pk|37mW avg|50mW rtd)
632.8nm: HeNe pointer by Atomic (0.68mW rtd)
635nm: NewWish (4.6mW avg|5mW rtd)
638nm: Classic from Lazerer (409.3mW pk|389.4mW avg|415mW rtd)
650nm: NewWish (10.6mW pk|5mW rtd) | Dilda (216.3mW avg|200mW rtd)
685nm: laser-in-a-box by Atomic (30.4mW pk|29.3mW avg) | 501B by Atomic (32.4mW avg)
780nm: module (2.7mW avg|5mW rtd)
808nm: Classic modded from a 532nm (162mW avg)
850nm: module (8.8mW avg|7mW rtd)
980nm: NewWish (81mW pk|5mW rtd) | 2nd line around 490nm

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Old 08-26-2015, 01:49 AM #474
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Default Re: NUBM44 6W+ 450nm Laser Diode

Very faintly if at all, depends if at high noon and clear sky or cloudy in the evening, then some if you look straight down the line as best you can.
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Old 08-26-2015, 07:11 AM #475
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Default Re: NUBM44 6W+ 450nm Laser Diode


Here's my tutorial on how to build a Nubm44 laser
... and it burning stuff.

Last edited by Matt F; 08-27-2015 at 04:35 AM.
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Old 08-26-2015, 08:43 PM #476
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Default Re: NUBM44 6W+ 450nm Laser Diode

OK, It's happened.
You remember that BB King song: The thrill is gone...can you hear it?
Anyway we were all worried that 6 watts was going to be Armageddon and yes it's been fun, but...it's like when you get a new motorcycle and think WOW I'm never going to use all this horsepower and by the end of the week you're bringing it in red hot with the tongue hanging out.
Well I officially am ready for more power.
For me 6 watts did not shatter the earth and it hasn't burned down my corner of the world.

Everyone must use safety glasses and be careful not to harm others of course.
I'm thinking 60-100w C02 but I would like to stay low voltage and air cooled.

Why do I need more power you may ask, it's simple....I am the Great leaf hunter of Stone Mountain, those little green monsters are planning an attack this fall and I must blast into ashes as many as possible before the invasion.
p.s. I blast em from the 2nd story into my own yard that is seriously bushy and I endanger absolutely nobody, always safety first. Yes I have fire extinguishers and long garden hoses front and back.

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Old 08-26-2015, 08:50 PM #477
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Default Re: NUBM44 6W+ 450nm Laser Diode

More power. Har har har
----Tim Allen, home improvement
Let's see if Binford Tools has what you need. Lol
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Old 08-26-2015, 09:27 PM #478
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Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by trussmonkey25 View Post
More power. Har har har
----Tim Allen, home improvement
Let's see if Binford Tools has what you need. Lol
Maybe a caveman approach of just pointing 3 beams onto the same leaf?

Or how about a whole block of 05T's with the G-ball or 2 blocks stacked for a total of 16. They are only 2 cm x 6 cm

I own some pretty expensive test equipment but still not a LPM, I seriously need to buy a LPM, but I need one that can test 150 watts, yes I know you can split the beam being tested or use attenuation filters but that's crap, why buy a meter at all if you're going to guess with it.

My decanned 44 diode is starting to take a piss, but I have been beating the hell out of it every day getting it pretty hot running it well over 5 minutes with cells in series parallel, but it is in a large heat sink that all gets warm.
Side by side with my hardly used FL host 44 diode running @ 4.5 amps it appears the decanned diode has fallen well behind.

I think I am going to start working with the ball lens in place on the other diodes at least until we get some output measurements.
Seriously the entire 8 diode block is small, only 2 cm x 6 cm, I am gonna have to do something with one of these.
Maybe a mount to hold 8 additional lenses that will be adjustable then a large moveable for a variable final focus.
Anyone know if these blocked diodes are arranged with the bar/wide axis horizontal or vertical?
Actually looking at the spacing you could easily stack two blocks, might even need 1 mm between, how awesome would that be?
16 beams focused down to maybe a 4mm x 4mm beam of 16 pushing 80 watts

Does anyone know of or want to share a better deal on these, I could almost swear I've seem them for 569.00 somewhere. I just know they are going to drop 100 bucks the day after I buy one. The 07E block has dropped 100 since last week. Hell the V1 units are down to 599.
Nichia NUBM05T 455nm 465nm 30W High Power Multi LD Bank Blue Laser Diode | eBay

I could make a leaf burner out of this and wear camera goggles to view the beam focus but I want to stay with visible for many reasons.
20W 810nm IR laser illuminator for CCTV camera /300M long [OLNG300L] - $385.00 : Zen Cart!, The Art of E-commerce

I would like to get a single 05T and work with it with the Gball intact to see what optics yield the best results, I can't be sure but going open can with this 44 it has kinda faded down over time with a large drop recently, but perception is not scientific, hence my need for a LPM.
I know this is the 44 thread but as 05T's are basically 44's maybe someone running a 07E canless could meter it daily and chronicle results?
Attached Thumbnails
NUBM44 6W+ 450nm Laser Diode-sany0325.jpg   NUBM44 6W+ 450nm Laser Diode-sany0336.jpg   NUBM44 6W+ 450nm Laser Diode-sany0338.jpg  

Last edited by RedCowboy; 08-28-2015 at 09:34 AM.
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Old 08-26-2015, 10:31 PM #479
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Quote:
Originally Posted by Matt F View Post

Here's my tutorial on how to build a Nubm44 laser
... and it burning stuff.
I keep getting error 400 messages
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Old 08-27-2015, 04:36 AM #480
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Default Re: NUBM44 6W+ 450nm Laser Diode

Okay thanks! the original post is working now
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