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New build

Kookapeli

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This is my first build in a few years, it's a BDR-209 from DTR, Heatsink from lifetime172018-11-27-16-31-06.jpg2018-11-27-16-30-26.jpg
 



Lifetime17

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Hi K,
That will keep the BDR-209/405nm nice and comfy , We all know how finicky these diodes are . Cu is the way to go for heat sinking.

Rich:)
 

BowtieGuy

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Nice build, hope it's the first of many! :cool:
Good job on the heatsink, Rich.
 

Kookapeli

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It's actually my 8th ish will have to post a pic of all of them soon
 

Lifetime17

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Hi BTG,
Thanks the sink is great for these diodes, K did a great job building it.

Rich:)
 

paul1598419

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Just curious, where did you have the current set on your driver for this build? Did you measure the optical power? Congrats on this build.
 

Kookapeli

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The driver was preset by DTR so unsure what it is ?
 

Lifetime17

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Hi K,
If Jordan set the driver to maximum / 600mA then they should bring you to about 1W+/- .And if he set it to say 550mA that would be about 900mW +/-

Rich:)
 

Lifetime17

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Hi, Did you order the G2 lens , and focus to a fine dot

Rich:)
 

Lifetime17

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Hi ,
Well that solves that issue the G2 is the one you would want for the 405 diode its the best to give you the power .

Rich:)
 

paul1598419

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Since this is a single mode diode, you should get a short focal length aspheric lens for it. Ones like the G2 can be had on eBay for $8.00 or less and you should get an increase in power of ~20%. Since they are short focal length lenses, the beam diameter remains small when compared to a longer focal length lens like Sanwu's G7. Search for 405nm lenses and look for single element ones on eBay. These lenses are always housed in a brass barrel which is discernible from the black housings of multi-element lenses.
 

Lifetime17

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Hi,
Feebay has them and they will say G2 aspherical lens , it should say 10mm barrel length single lens . Thats what you want.. Try techhood or existotem on line . Or hunt for them they aren't a rare lens. If I knew that you were going to buy the 3E I would have sold you a G2 I have in stock and shipped it with the copper sink.

Rich:)
 

paul1598419

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The one in it has a metal housing, it was the 3 eg one

Yes, and it is black in color. The short focal length aspheric lenses all come in a brass housing. Many are already AR coated for 405nm. But, it never hurts to check what kind of AR coating a lens has that you are ordering from a seller on eBay.
 




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