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Old 06-27-2015, 04:14 PM #81
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Default Re: V1 445nm Laser Diode

I cant wait to get one of these bad boys.. I'm thinking all copper host


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Old 06-27-2015, 05:48 PM #82
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Default Re: V1 445nm Laser Diode

Ran a test using 3 element lens and got peak of 5.3w from 7.2w using G lens.

3 element gives a very different beam also. This is about as small as I can get it without lens falling out
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Old 06-27-2015, 06:03 PM #83
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Default Re: V1 445nm Laser Diode

Quote:
Originally Posted by starlight View Post
Ran a test using 3 element lens and got peak of 5.3w from 7.2w using G lens.

3 element gives a very different beam also. This is about as small as I can get it without lens falling out
That is strange, have you tried another 3 element? It's possible you got a defective lens.

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Old 06-27-2015, 06:56 PM #84
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Default Re: V1 445nm Laser Diode

Thanks @CDBEAM. I was thinking about putting it into an mss-ssw3, which would give me both copper and finned aluminum, but I didn't have a driver already in that and it doesn't take a full module.

Quote:
Originally Posted by Pman View Post
That host isn't very big but is very heavy and you can buy extra copper heat-sinks/modules for easy swappage. I have it with a thick chrome plating with a 1.5W 520nm (extremely shiny) with an extra heat-sink. I can say for sure this host pulls the heat from the sink into the host well.
I don't know why but I have never heard what the standards are for deciding on/off cycle. If there's a link I would appreciate it.
Nice. I was going to go with the 1.5 watt green, too, but then this diode appeared. Although, I still have an unused mss-ssw3 that I might still swap it into later. I also coated it with everbrite, so I have polished it once, and not since then, which was about 4 months ago.

Did you have trouble with the heatsink? It's made for a full module, but I had so sand out the inside quite a bit to make it fit most of the way. Took me like 4 hours total. And it inevitably widened the part where the diode sits, so I'm still a little worried about thermal conductivity. Maybe I got a bad one.

Technically I think the duty cycle is how long it takes for the diode to exceed the data sheet operating temperature, usually about 40 C. So you probably should use an IR thermometer pointed at the inside of the module. Or you can just feel the heat and guess. I always err on the low side, but with copper, its longer than you might expect because the heat transfer to your hand is very good.

Edit: starlight, could measure yours at say 5 amps? To see if the power is still increasing. Also, do you have a g7 lens you could test? I'd be curious to see if they actually perform.
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Old 06-27-2015, 10:06 PM #85
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Default Re: V1 445nm Laser Diode

Quote:
Originally Posted by Pi R Squared View Post
That is strange, have you tried another 3 element? It's possible you got a defective lens.

Alan
Someone mentioned I might have the lens in reversed. I'm trying it again tonight

Edit: I did have the lens in backwards and it now focuses just fine. I can bring the dot down to a small spot no problem. Haven't metered thmeterede lens this way yet but I will for us.

P.S. big Thanks to Pman for seeing my mistake so I was able to correct it.

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445nm Ehgemus RPL host 3W (peak 3.5W)
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589nm Dragon Lasers Spartan 50mW (peak 115mW)
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650nm E-Bay 303 host 200mW (peak 141mW) 75% IR
650nm DVD diode Mini Mag host 54mW (my first build)
650nm dollar store mini pen 5mW X2

808nm Wicked Lasers E2 400mW (peak 598mW)

Expanders & Googles etc:
Dragon Lasers 10x Beam Expander
Dragon Lasers "new" 2x Beam Expander
Dragon Lasers DGTBF
Dragon Lasers LSG02 goggles 190-548nm
Eagle Pair SL-BLG2 goggles 190-540nm

LPM:
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Flashlights:
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Last edited by starlight; 06-27-2015 at 10:45 PM.
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Old 06-28-2015, 08:21 AM #86
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Default Re: NUBM44 445nm Laser Diode

Gave the diode a new name that more fits as it refers to a part number now. I also have a page for them now on my site.
https://sites.google.com/site/dtrlpf...nm-laser-diode
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Old 06-28-2015, 10:01 AM #87
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Default Re: V1 445nm Laser Diode

Hi I'll buy that NDB7A75 for 100.00 if it's in the same ESD or module unopened. With garantee. PM me if you agree to it.
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Old 06-28-2015, 02:43 PM #88
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Default Re: V1 445nm Laser Diode

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Hi I'll buy that NDB7A75 for 100.00 if it's in the same ESD or module unopened. With garantee. PM me if you agree to it.
They are listed on his site for $135...
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Old 06-28-2015, 05:05 PM #89
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Default Re: NUBM44 6W+ 445nm Laser Diode

Will these apear as bright to the eye as a 1W 520nm?
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Old 06-28-2015, 06:29 PM #90
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Default Re: NUBM44 6W+ 445nm Laser Diode

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Will these apear as bright to the eye as a 1W 520nm?


Kinda, but only the beam. App is Relative Laser Beam Brightness Calculator: (450nm 6500mw) vs. (520nm 1000mw)
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Old 06-28-2015, 09:20 PM #91
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Default Re: NUBM44 6W+ 445nm Laser Diode

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Sorry to go offtopic here, but I just noticed that I live like 15km away from you, I live in Voorhout. Pretty cool to live so close to another member.
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Old 06-28-2015, 10:49 PM #92
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Sorry to go offtopic here, but I just noticed that I live like 15km away from you, I live in Voorhout. Pretty cool to live so close to another member.
Ha, that's pretty cool actually. I didn't know you were so close to me!
Maybe I can see one of your beams from over here :P
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Old 06-29-2015, 12:58 AM #93
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Default Re: NUBM44 6W+ 445nm Laser Diode

I have a 150 LPM and will test it as soon as I get it from DTR,I paid today!
And I have a 5500ma driver coming too. this will be a powerful kit !!!!!!
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Old 06-29-2015, 01:49 AM #94
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I have a 150 LPM and will test it as soon as I get it from DTR,I paid today!
And I have a 5500ma driver coming too. this will be a powerful kit !!!!!!
Hey rick, you gonna do a video on YouTube of it?
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Old 06-29-2015, 01:49 AM #95
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Default Re: NUBM44 6W+ 445nm Laser Diode

Will be excited to see builds with this monster start popping up. That kind of power for the price is fantastic. Hope we can measure what it's really capable of soon.
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Old 06-29-2015, 02:17 AM #96
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Default Re: NUBM44 6W+ 445nm Laser Diode

Wow these things are stupidly powerful. DTR is there any possible way to put one into one of your 510 adapters, or would the driver requirements (4.5 amps)/ duty cycle be too horrendous?
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Taipan Projector: 3.5-4 W B(445nm)1.5W, G(532nm)1.5W R(637nm)1W DT30 Still building!
All solid state PJ: 1W B(462)400mw G(520)200mw R(638) 400mw DT40W (collecting bits)
Pointers: 1.0 watt "Z-Lase" - 520 nm diode by DTR attached to segelei zmax V5 Vaporizer
Gassers: Omnichrome 643 Multi Line AR/KR+ ION!!!! doing ~190mW Low hours too!
Siemens 3 mw 632nm helium neon
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