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What's a reliable setup for a 532nm, 100mW that will handle recoil and return to zero

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davepl

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EOTech makes a holographic sight that incorporates a co-witnessed 50mW green laser, but for liability reasons they only sell to the military.

Thus, I am looking for an alternative. I don't mind the keyed interlock and other FDA-mandated things that come with a Class IIIb as long as it can also meet these criteria:

1) Somehow be mounted reliably on a Picatinny rail (LE6940)
2) In the 50-150mW range
3) Can handle recoil and is stable enough to return to zero
4) Ideally, also support (in addition to on/off) a separate mometary pressure switch

Everything specifically -made- for a rifle is Class IIIa (ie: 5mW) and that's not much use in sunlight.

If the experts here could suggest a laser that I could adapt for this purpose, I'd sure appreciate it!

Thanks,
Dave
 





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davepl

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BTW, if there's a more targetted subforum for this, please let me know. I did see "green" but the question's not specific to green, so...

Anyhow, I've been reading and searching for a while, and that brought up an idea. How realistic would it be to take an existing 5mW product that's designed for this purpose but to upgrade the diode? In other words, what are the odds that you could (a) find a higher power diode in the same size, (b) successfully swap it with reasonable soldering skills, and (c) that the driver circuit would still handle it?

While 50mW might be 10x as much as 5mW, 50mW still isn't a lot of power in absolute terms...
 
Mohrenberg

Mohrenberg

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Folder said:
There are no green laser diodes, so you couldn't do it.
Click to expand...

Ignore that....


I've never taken apart a green laser sight before so I don't know if they are made similar to the pointers.

I don't know if you'd find a module like the ones found in points, or if they're built entirely different.
I would assume that the standard modules we use would not hold up on a firearm for long. They use the foam type adhesive to hold the optics and crystals in place, which doesn't hold them in place very well. You can actually just grabs the stuff and pull it right off, it's that weak of an adhesive.

But i'm wondering, if the crystal thats already in the lasers sights could handle the power, you could simply use a different IR diode and driver and shoot it through the same crystal and optics to get a stronger laser.
Who knows, the stock diode may also be very under driven and could withstand a pot mod?

My experience with DPSS is VERY limited.

I would get in touch with Elektro_Freak, He would have an answer for you.
 
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Markus Unread

Markus Unread

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If I cared about reliability, I'd go with a 445nm - or any laser that didn't depend on precisely aligned freq conversion crystals - like DPSS green. Unless you are mounting it to something with very little recoil...
 
flecom

flecom

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nice choice on the colt... I have an MT6400C and its been great...

anyhow most of those chinese laser sights on ebay dont hold zero very well if at all...

in addition the shock of the recoil would probably destroy most DPSS cavities unless they are specifically designed for said shock...

theres a reason why almost every military laser is either 635 for the visible stuff or 835 for the IR stuff

and something real nice like a DBAL, OTAL or AN/PEQ will cost you easily $2000~$3000

so whats it worth to you?

honestly I dont see the need for a visible laser on a rifle... use your sights and/or scope ;)
 
oic0

oic0

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Remember those green diodes that are just around the corner? I would wait on one of those or use a different color.
 
flecom

flecom

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I would use a different color, one with less chance of a visible beam, like 660 or 635 red... visible beam means the person your aiming at knows exactly where to aim
 
qumefox

qumefox

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You'll still be able to see the beam on a red of any appreciable power when it's being pointed *at* you.
 
flecom

flecom

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qumefox said:
You'll still be able to see the beam on a red of any appreciable power when it's being pointed *at* you.
Click to expand...

at 5mW you would have a hard time... unless its foggy out...

thats why most real laser sights dont exceed 5mw for visible (red) and 30mw for IR (for NVG's)
 
qumefox

qumefox

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I can see the beam from a 5mw red when it's being pointed at me. Unless your in a clean room, if it's dark, there's generally going to be enough particulate in the air to make the beam visible when looking back towards the source.

The 5mw limit is a FDA thing. Nothing else. the IR ones aren't supposed to be over 5mw either.

Laser sights aren't for being sneaky. They're for aiming quickly without having to sight in on your target.
 
flecom

flecom

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qumefox said:
I can see the beam from a 5mw red when it's being pointed at me. Unless your in a clean room, if it's dark, there's generally going to be enough particulate in the air to make the beam visible when looking back towards the source.

The 5mw limit is a FDA thing. Nothing else. the IR ones aren't supposed to be over 5mw either.

Laser sights aren't for being sneaky. They're for aiming quickly without having to sight in on your target.
Click to expand...

I think I understand laser classes :p

you must have very sensitive vision to clearly see a 5mW deep red beam from a distance...

also there are plenty of laser sights that exceed 5mW because they are for military/law enforcement use only...

DBAL has a 35mW 835nm laser

AN/PEQ-15 has a 25mW 835nm laser pointer and a 30mW 835nm laser illuminator
 
qumefox

qumefox

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WHile the military may be able to circumvent FDA regulations, to my knowledge, law enforcement isn't.

And you don't need to see it clearly to tell where it's coming from. Get a friend and a 5mw red pointer and go out at night, have him point it at you from about 50 yards and honestly tell me how hard it is to figure out where it's coming from.
 
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