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Old 01-17-2014, 10:35 PM #65
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

See night video night video of the new 445nm 9mm 4.6wlaser kit - YouTube
it need a 3 element len to get the best looking beam ,they laser had a 9mm lens in it in the video .

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that's too bad, but the raw power is what interests me. if I want a clean blue beam I'll get a single mode osram laser. 5W, WOW.


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Old 01-17-2014, 10:45 PM #66
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

Who is making drivers that operate in this range?
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Old 01-17-2014, 11:00 PM #67
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

I have one in the works hope to show spec. soon up to 6A

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Who is making drivers that operate in this range?
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Old 01-17-2014, 11:37 PM #68
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

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Originally Posted by ricktrent4 View Post
tested the 9mm 445nm diode to the max /the max I would push a $650 diode to. I got the one I tested to go 5.33W at 3.4A took power off at 3.4A so I would not hurt diode . At 3.16Amps got 5w. I think that would be safe to run the new diode in my heat sink.
see video LPM test max on new 445nm diode 5.33w - YouTube
will make a night video later
Visually, does it appear to be a similar wavelength to the 9mm's?
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Old 01-17-2014, 11:50 PM #69
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

yes! But the shape of the bar/beam on a wall at 20 ' away is 2 times the size or 2 1/2 times the size with the same lens

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Visually, does it appear to be a similar wavelength to the 9mm's?
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Old 01-18-2014, 12:25 AM #70
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

As bad as the 638nm mits or a little better?
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Old 01-18-2014, 12:52 AM #71
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

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Originally Posted by Atomicrox View Post
As bad as the 638nm mits or a little better?
Not as bad! I had to turn it and look hard to tell ,with a 9mm lens .If you a 3 element lens you could not tell. the 4.6W hit 3.2W with a 3element lens a tested it on .I have a bigger lens from a m140 diode will do some testing to see if all the power is make out of the glass ,good thing my lens holders are bigger then most. that is why I called it the T1 lens the hole is bigger.
the m140 has a 1 piece glass lens .I will test it and see if I get more power .
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Old 01-18-2014, 12:53 AM #72
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

Cool, keep us posted!
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Old 01-18-2014, 01:10 AM #73
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

ok tested the m140 lens lost power drop to 4.16W,from 4.6W so the 9mm lens is big enough I will test a smaller lens holder with a 9mm glass in it and see if I get the same power.

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Cool, keep us posted!
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Old 01-18-2014, 03:02 AM #74
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

How about trying a 2-element lens like the 1/2 threaded type that O-Like use to make or the full thread version that you were selling? I bet you will get about 4 watts at 3 Amps with a decent beam profile to boot.
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Old 01-18-2014, 03:49 AM #75
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

5 watts, holy crap- props to you for doing the testing, Rick. Will be interesting to see if these will be stuck in projectors soon...
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Old 01-18-2014, 04:30 AM #76
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

I made a prediction that they might be able to hit 6w safely, seems I was wrong. a safe 5.15w @ 3.25 amps is very impressive. done with passive cooling nonetheless. Good job on being the first to test the diodes

Last edited by kaunak; 01-18-2014 at 04:34 AM.
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Old 01-18-2014, 11:31 AM #77
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

I stoped the power as fast as I saw it not going up fast ,that is why I would have like to had the money to go up higher and see were it blow at and at $650 each I can not do that . I know the red 5w slowed down make power but keep going up!

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I made a prediction that they might be able to hit 6w safely, seems I was wrong. a safe 5.15w @ 3.25 amps is very impressive. done with passive cooling nonetheless. Good job on being the first to test the diodes
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Old 01-18-2014, 12:34 PM #78
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

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I made a prediction that they might be able to hit 6w safely, seems I was wrong. a safe 5.15w @ 3.25 amps is very impressive. done with passive cooling nonetheless. Good job on being the first to test the diodes
With what lens did it hit 5.15W at?
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Old 01-18-2014, 01:56 PM #79
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

I used the 9mm glass with my T1 lens holder
I used the small lens holder and got 200mw less and that was after I cleaning the lens .It could be one pice of lens is better but I get this happing over and over in the small lens holde .
I think my LPM picks up the splater better then some LPM
I could do a video of it but I have done one before. you would have to see it for your self or some would not believe it as before .

PS. It was could today in shop got 4.79W at 57f at 2.79A in gray laser host

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Originally Posted by TheDukeAnumber1 View Post
With what lens did it hit 5.15W at?
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Old 01-18-2014, 03:56 PM #80
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Default Re: New Generation 445nm Diodes: Nichia NDB7A75

I think you've definitely earned our trust here by now. You don't seem to put much effort into punctuation or proofreading your posts sometimes, but that's just kinda your thing. You testing out these new diodes is very much appreciated.
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