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Old 08-31-2017, 09:53 AM #1
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Default Need some opinions for a build

I'm looking to build a 405nm laser with the 16x diode pretty soon but I'm not sure what lens is best. I know the difference between the G2 and the 3 element lens but I just can decide on one. I'd like your opinions because I'm finding both lenses being used for this diode.


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Old 08-31-2017, 10:05 AM #2
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Default Re: Need some opinions for a build

If you can afford the G2 lens is will be about the best you can get for a 405nm build.
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Old 08-31-2017, 11:15 AM #3
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Default Re: Need some opinions for a build

Hi,
Yes the G2 is what you want for the 405nm diode perfectly paired .. This one i built with a custom full copper sink and knob with a G2 lens . They burn like mad.

Rich
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Old 08-31-2017, 05:25 PM #4
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Default Re: Need some opinions for a build

Hi ,
No not really aluminum is fine to , you can get away with an aluminum sink in a C6 size host with respectable duty cycles. I just mentioned copper because it's heat sinking capabilities. Even an aluminum sink with a
Copper core pressed in will work also.
Like this but on a smaller scale.
Rich
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Old 08-31-2017, 05:27 PM #5
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Default Re: Need some opinions for a build

Quote:
Originally Posted by Lifetime17 View Post
Hi,
Yes the G2 is what you want for the 405nm diode perfectly paired .. This one i built with a custom full copper sink and knob with a G2 lens . They burn like mad.

Rich
Is a copper heat sink necessary for a decent duty cycle? I've seen builds with just an aluminum heat sink.
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Old 08-31-2017, 05:31 PM #6
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Default Re: Need some opinions for a build

Quote:
Originally Posted by anton View Post
Is a copper heat sink necessary for a decent duty cycle? I've seen builds with just an aluminum heat sink.

Should still get a decent duty cycle with Aluminum and a 16x, copper would improve that further.
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Old 08-31-2017, 08:06 PM #7
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Default Re: Need some opinions for a build

I'd be conservative with the driver current as these diodes fail often when over driven to 1 watt. The G-2 lens is AR coated for 405nm and is, of course, your best solution for a lens of this build.
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