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FrozenGate by Avery

175mW 638nm Ehgemus with Mitsubishi Single Mode Diode

Blord

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In this review I want to show some in-and-out of the Ehgemus host with a 638nm single mode diode. I bought the host from Ehgemus a few weeks ago. :drool:
The host is very sleek and lightweight. It is completely made of aluminium. It has room for one 14650 3.7V Li-ion battery. The diode pocket is integrated in the host omitting the module and the heatsink. I had an idea of putting a single mode diode into it. This beautiful host deserves a diode with nothing but the best beam/dot spec.

After buying the 110mW Mitsubishi Single Mode Diode (ML520G54) I could start building the laser. With the information from RHD about the maximum current I decided to use a single AMC7135 ic as a driver. This little bugger delivers 350mA constant current with one 3.7V cell.

Enough talking. Here is the pictutorial :beer:

The Ehgemus 14650
Ehgemus_14650_1.jpg


Ehgemus_14650_2.jpg


The famous buttersmooth switch :)
Ehgemus_14650_3.jpg


Excellent finishing. You can't see which part is the rotating head. :undecided:
Ehgemus_14650_4.jpg



The Build

AMC7135 ic on a proto board. I cut a square of 3x3 points as driver base.
This thing is TINY !
Ehgemus_14650_5.jpg


Make connections between the points and solder the wires.
red wire : battery+
black wire : battery-
blue : diode+
white : diode -
Ehgemus_14650_6.jpg


All three pins of the diode are used for the driver. Ehgemus has already a wire for battery+ so I use this yellow wire.
Ehgemus_14650_7.jpg


I glue a moon shape aluminium sink under the driver. Then the whole assembly is glued into the brass tube.
It takes some fiddling to fits all the wires but I managed. ;)
Ehgemus_14650_8.jpg


Add the lens, the 14650 battery and the laser is ready.
Ehgemus_14650_9.jpg


Ehgemus_14650_10.jpg


The beauty and the beast ! :crackup:
Ehgemus_14650_11.jpg



BEAMSHOTS

Ehgemus_14650_12.jpg


Ehgemus_14650_13.jpg


Ehgemus_14650_14.jpg


Ehgemus_14650_15.jpg


Good round dot. It has on both sides wings like the LPC-815/826 diodes.
The distance was 10 meter/30 feet
Ehgemus_14650_16.jpg


High-power short focal lens
Ehgemus_14650_17.jpg


650nm AR coated Acrylic lens. This lens gives the best looking dot.
The 3-element glass lens looks very nasty with this diode.
Ehgemus_14650_18.jpg


Color comparison 638nm vs 660nm red laser.
Ehgemus_14650_19.jpg


I made a nice case for the laser. A perfect gift ! :bday:
Ehgemus_14650_20.jpg

I hope you enjoy the tour and ceeya ! :wave:
 
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Awesome :beer: love the pen style single mode combination! And damn your pictures there so nice lol

+rep where i can

Greetingss,,

EDIT: must spread rep :(
 
Last edited:
Awesome :beer: love the pen style single mode combination! And damn your pictures there so nice lol

+rep where i can

Greetingss,,

EDIT: must spread rep :(

Still up ? It is 3 AM now ! :beer:
Go and spread rep then come back to me :)
 
Nice!
I really want one of those single mode 638s.

How does the brightness compare with your 300mW and 350mW 660nm lasers?

By the way, I really like your backyard. :)
 
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Now that's purdy.:drool:

Great host choice. Ehgemus makes some of the best hosts and I am a huge fan of the 14650 sized ones.:)
 
Veryvery nice!

As Daniel, I´m also interested in the brightness compared to a 300mW 660nm. But if the wl-shift is not too big (what I personally doupt in this small host), it should be BRIGHTER than the 300mW 660nm.

I´m much more interested in a good powered 635nm single mode than a 1W 638 (+/-) multimode.
 
451ef4cb64dab0570c25a2903593d7ef.png


God DAYUM!

It couldn't be any better if it had a pair of boobs machined into it!

Suddenly I feel like I don't need a kidney anymore.
 
Dafu-- That's not the direction of the thread I desired!

Boobs that do not share a body with a moustached face are perfectly OK.. Let's be civilized, now.

Or compliment Blord's laser but since we're all jealous anyway and started talking about boobs instead, I'm sure he'll understand.
 
Nice! I'm also curious about visibility... vs 650nm, and vs the multimode 638nm's?

+Rep... awesome beamshots.
 
Yes nice build... again with the rep must be spread around meh!!! your building them faster than I can spread rep.
 
Thanks for the appreciation. :wave:

I will make a comparison shot between 175mW 638nm single mode, 500mW 638nm multimode and the 250mW 660nm LPC-815
I am waiting for the evening/night. It is now a bright sunny day :)
 
Great laser blord.

Ya got to love those ehgemus hosts! Every one I see makes me drool.
 
Very nice laser and photos,

I also love the 635-638nm, one of my favorites colors.

Congrats :beer:
 





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