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ArcticMyst Security by Avery

Creative things to do with hacked-out laser module?

Joined
Aug 6, 2014
Messages
167
Points
18
My 5 mW Ebay pointer just couldn't light up, so I gave up and tore it apart for a look. While taking out the module, I discovered that it was the fault of the button, so I had torn it all up for nothing :eek:. But I was determined to do something with it, so I rigged it up to two AA batteries, connected positive and negative, and--surprise!-- it worked despite all the crude hacks I had done (taking out the cap with a hacksaw :whistle:!) However, it is highly divergent. And the dot (or flood) has rings around it, like ripples in a pond. Can anyone tell me what that is?
Is there anything that I can do with it? (Pot mod, infrared pointer, or anything else creative) Thanks in advance! ;)
Edit: I researched but everything seems to be saying how to fix broken or torn-out modules. I think I like the way it is now...
 
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upaa27

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Joined
Jul 10, 2013
Messages
618
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Those rings are sometimes normal for the diodes but with a 5mw it shouldn't happen. It is probably a smudge or something on the aperture or lens. As it is highly divergent I am guessing that there is no lens on it so I say just clean the aperture with a q tip dipped in alcohol. To fix the divergence check if there is a lens on it. If there is adjust the focus until you get what you want. If no lens is present then stick one on.

As for modding it I say don't do anything to it as 5mw of ir is invisible even at 808nm. Increasing the power is a never as you will kill the diode extremely quickly due to no heatsinking and no current regulation.
 
Joined
Feb 5, 2008
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You didn't need to take the hacksaw to it, all pen lasers can be disassembled without destroying anything, but it's amazingly counter-intuitive procedure.

Anyhow, pictures of the module's current condition would help.
 
Joined
Aug 6, 2014
Messages
167
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Sorry guys, I'll post them soon.
Yes, there is no lens on it.
It looks very pixelated.
 
Joined
Aug 6, 2014
Messages
167
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So here is a few pics of the divergent no-lens module:
attachment.php

You can see the pic of the mod, rigged up to this electronic kit thing that I own.
The next picture is it turned slightly on. Before it turns green, the module emits a little red light. Is this because of the infrared light that is also coming out of the module just before the green light kicks in?
attachment.php

Since I don't have a Youtube channel :)shhh:), you guys will have to download the video to see the laser being turned on and all that good stuff :yabbem:.
http://laserpointerforums.com/attachment.php?attachmentid=45943&stc=1&d=1408913623
Have any comments or anything? :yh:
 

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Joined
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Messages
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Yeah like I thought, you're missing a final collimator lens on the module, that's why it's so divergent.

Fixing it up without having the rest of the brass part of the module can be very tricky. If you still have the original lens, it could do.

Otherwise, try playing around with whatever optics pieces you have, see what they make of the beam. I believe plastic Aixiz lenses cannot be used since they have too short of a focal point (so basically sticking the lens ON the expander lens still produces a focal point not too far from a laser, can't get infinite focus).
 
Joined
Aug 14, 2013
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Take a picture of the dot projected on the wall.
Without the final lens, it is easier to see what
mode(s) the laser is running in.

Also, don't look into the dull red. That is very
strong infrared light which appears to our eyes
as a dim red, but can cause eye damage.
 
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Joined
Aug 6, 2014
Messages
167
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Yea guys, I researched on the hazard of IR.;)
I'm not trying to fix it up. If I was, I'd be clickin' the search button lots.
No, I'm asking for creative things to do. :eg:
I think just leaving it as is and enjoying the pixelated light is cool enough.
@Lightningstalker: No worries on the safety. Isn't the IR of a green laser have to be at least five times the green color's output power or something?
Oh, and the dot is in the video.
 
Joined
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Messages
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@Lightningstalker: No worries on the safety. Isn't the IR of a green laser have to be at least five times the green color's output power or something?

Initially, yes, though it depends on the
efficiency of the system. Most of that is
either lost or converted to the green, but
every individual laser is going to be a little
different. Some of them are mostly green
with as little as 5mW IR component. Some
will have twice as much or more IR than
green. Of course, this does not apply to IR
filtered and direct diode lasers.
 




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