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Old 05-27-2011, 05:13 PM #1
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Exclamation (Video Added) 2011's worlds most powerful handheld 445. 3.5W 2 LD array

A project which has finally come to fruition...

I have been working on this idea for some time and am in the
final stages of assembly.

This host has been designed to accommodate 2 high efficiency
diodes paird up with a set of DrLava's cylindrical optics, and
2 x 405-G1 lenses from Jayrob..

I must say that so far this is my personal best, and cant wait
to test this out fully assembled. I have incorporated the concept
of 'knife edging' but with a slight twist.. The route I have taken
will remain a secret... for now..

All optics in the head are AR coated and glass.. of course.

The collimators used is a set of Jayrobs fine 405-G1 aspherics, making
for one hell of an output, 3.5W after optics with reduced divergence

The unit is powered via 2 x 18350 in series with a total current draw
of 2.2A from the cells.

I will add some more pics when this is finished, though the unit is already
sold

I have 2 more sets of cylindrical correction optics, and plan on 2 more of
these. I am also working on a lower cost model which uses standard aixiz
glass lenses and no correction.

The output will not be as high without the aspherics, but will bring the
cost down a bit.

As it stands, this laser has more $$ in parts and machining time than any
other of my builds to date..




Enjoy some pics









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Old 05-27-2011, 05:22 PM #2
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Ho... ly... shit.

Man, I knew someone would do this some time, but just thinking about the raw POWER in this thing is crazy.

How did you manage to align optics inside the heatsink is my question?

Edit: Oh, I see what you did - you made the heatsink a flat ledge.

Last edited by Wolfman29; 05-27-2011 at 05:23 PM.
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Old 05-27-2011, 05:23 PM #3
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

would be nice to see power output /after/ you get the thing assembled.
annoying to see people boast powers of a device that hasn't been constructed yet, imo.
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Old 05-27-2011, 05:24 PM #4
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

optics are on a sled in the heatsink. You can see the L-shaped optics mount.

Edit: Oh, and nice host, looks like a monster! You gonna get it anodized or anything?

Also, can you post defocused beamshots, i.e. through a lens, and see if we can guess what your "special combining method" is? Like a game, sort of? Winner gets the laser (or at least, a desktop-sized picture of it ;-) )

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Old 05-27-2011, 05:29 PM #5
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Quote:
Originally Posted by Wolfman29 View Post
Ho... ly... shit.

Man, I knew someone would do this some time, but just thinking about the raw POWER in this thing is crazy.

How did you manage to align optics inside the heatsink is my question?

Edit: Oh, I see what you did - you made the heatsink a flat ledge.
The head is in 3 pcs. fitted together...






Quote:
Originally Posted by csshih View Post
would be nice to see power output /after/ you get the thing assembled.
annoying to see people boast powers of a device that hasn't been constructed yet, imo.
Its been tested already.. The internal section of the head has spent
a lot of time on my bench for alignment and output testing.

Sorry to disappoint, but these arent numbers pulled out of a hat

More annoying when 'people' make assumptions imo.




Quote:
Originally Posted by BShanahan14rulz View Post

Edit: Oh, and nice host, looks like a monster! You gonna get it anodized or anything?

Also, can you post defocused beamshots, i.e. through a lens, and see if we can guess what your "special combining method" is? Like a game, sort of? Winner gets the laser (or at least, a desktop-sized picture of it ;-) )


No, no anodize. Not yet anyway, got too many projects on the go and still need
to perfect my anodizing before adding colours.

No need for pics, of the expanded beam.. All you would see is the 2 parallel beams
exiting. Nothing special there
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Old 05-27-2011, 06:26 PM #6
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Wow show us some more pics of this beast! How big is it? its hard to tell from the pictures...

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Old 05-27-2011, 07:05 PM #7
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

I am impressed, and would love to see more of the inside of the head!
About time someone made a multiple diode handheld.

Quote:
The collimators used is a set of Jayrobs fine 405-G1 aspherics, making
for one hell of an output, 3.5W after optics with reduced divergence

The unit is powered via 2 x 18350 in series with a total current draw
of 2.2A from the cells.
OK, am I missing something here?
You are either direct driving the diodes wired in series, or you are powering them
in parallel, in which case every diode gets 1.1Amps, with a linear driver,
unless you have some super-efficient-magic-unicorn(TM) buck driver to fully harvest the voltage of two LiIons in series....

How do you get 1.75 W each diode from 1.1A per diode then?

Argghhhhhh!! you are driving me crazy!
Give up your secret, you bastard!!
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Old 05-27-2011, 07:43 PM #8
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

I do believe this is the most impressive DIY handheld I've ever seen. You do amazing work Wannaburn. This definitely deserves some rep!
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Old 05-27-2011, 08:01 PM #9
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Anselm:
I've done some testing on drivers meant for XM-L and SST LEDS, and they can buck the 8v down to 4.8 for a445 and turn the excess voltage into more current for the diode. It works for two 445s in parallel. Using my approach, these numbers in OP would be doable given the 2.2 battery drain I believe. So I wouldn't discount his figures, I'm sure wanna has some neat boost or buck related solution.
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Old 05-27-2011, 08:17 PM #10
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Smiley really says it better than anything I could come up with.

Amazing build

Please post more pictures so I can drool over them

If possible, can you post a picture next to a ruler, or something standard sized, hard to tell what size it is.
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Old 05-27-2011, 08:33 PM #11
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Awesome seems like a weak word when I viewed that beautiful beam.

Wicked Lasers and their "record-breaking" actic spyder 3s are 4-5x weaker. Shine that in WL's face , metaphorically
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Old 05-27-2011, 08:33 PM #12
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

So... you couldn't wait to post this...
You're like a woman that's about to burst if
she doesn't tell her secret...

That is impressive wannaburn... looks great...
Wouldn't expect less from you...
but like the guys have stated... we need a reference
to get an idea of the physical size...

This is better than the WL Sith... at least both beams
come out of the same end...

Quote:
Originally Posted by csshih View Post
would be nice to see power output /after/ you get the thing assembled.
annoying to see people boast powers of a device that hasn't been constructed yet, imo.
It looks built to me... I even see a 455nm beam that
can be metered...

I've been here long enough to lnow that when wannaburn
posts a power output of one of his builds I know for a fact
that he actually tests it...


Jerry
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Old 05-27-2011, 08:38 PM #13
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Quote:
Originally Posted by lasersbee View Post
This is better than the WL Sith... at least both beams
come out of the same end...


But seriously, awesome job on getting this all fit into a handheld host. I can't wait to see the finished product.

Last edited by JimBolder; 05-27-2011 at 08:38 PM.
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Old 05-27-2011, 08:44 PM #14
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

That thing is a beast. Now you are making me jealous.
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Old 05-27-2011, 09:13 PM #15
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Quote:
Originally Posted by jeffd View Post
Wow show us some more pics of this beast! How big is it? its hard to tell from the pictures...
31.5mm dia on the head and 227mm in length, body is 25mm diameter..
The internal head is approx 27mm which is the heart that holds the diodes
and optics..

Here is a quick pic in my hand as well..



Quote:
Originally Posted by anselm View Post

unless you have some super-efficient-magic-unicorn(TM) buck driver ...
Yes. Its actually 2 buck drivers running the LD's seperately. Running
them in parallel would end up being wasteful with resistors to balance
the draw.. One LD is putting out 1.92W and the other 1.58W post optics.

Quote:
Originally Posted by Kevlar View Post
I do believe this is the most impressive DIY handheld I've ever seen. You do amazing work Wannaburn. This definitely deserves some rep!
Thanks
Quote:
Originally Posted by lasersbee View Post
So... you couldn't wait to post this...
You're like a woman that's about to burst if
she doesn't tell her secret...

That is impressive wannaburn... looks great...
Wouldn't expect less from you...
but like the guys have stated... we need a reference
to get an idea of the physical size...

This is better than the WL Sith... at least both beams
come out of the same end...


It looks built to me... I even see a 455nm beam that
can be metered...

I've been here long enough to lnow that when wannaburn
posts a power output of one of his builds I know for a fact
that he actually tests it...


Jerry

LOL, an anxious woman indeed

The time involved on this build is approaching 40hrs.. I just couldnt
take it any more!

Besides, my luck, somebody may have beat me to it




Quote:
Originally Posted by DTR View Post
That thing is a beast. Now you are making me jealous.
lasers are meant to be desired.... To be honest, ill be jealous too as this one
is spoken for, and do not have one for myself
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Old 05-27-2011, 09:34 PM #16
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Default Re: The worlds most powerful handheld 445..... 3.5W 2 LD array

Nice build! How's battery life looking?

-Trevor
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