Need some opinions for a build

anton · Aug 31, 2017

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.

Mosc007 · Aug 31, 2017

If you can afford the G2 lens is will be about the best you can get for a 405nm build.

Lifetime17 · Aug 31, 2017

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

Lifetime17 · Aug 31, 2017

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

anton · Aug 31, 2017

Lifetime17 said:
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.

diachi · Aug 31, 2017

anton said:
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.

paul1598419 · Aug 31, 2017

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.

Need some opinions for a build

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