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ArcticMyst Security by Avery

Asking for help / information for a Christmas Gift

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Nov 20, 2008
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Hello, hello. I Googled around and this seems like the primary forums on the internet for laser-related projects, so I'm hoping someone can point me in the right direction.

I've had an idea for a Christmas gift, since last December, but hadn't the time to make it happen (was deployed in Iraq this past Christmas).

I've only got about two weeks left in my enlistment with the Marine Corps, so this year I'll be home. I've decided I'd really like to try my hand at this gift for a friend of mine. Here's the plan:

Friend is a big fan of Harry Potter. The idea was to purchase one of the fairly inexpensive replica wands, and place a mild-powered green laser in it for flashy effect.

Before anyone may decide to scream safety, yes, I realize that lasers can damage eyesight. We used them in Iraq, both for anti-personnel (to signal/warn civilian drivers of approaching military convoys), and for targeting our weapons systems. My friend is 23 years old, so no, I would not be giving this "toy" to a child.

That being said, this is the first of two replica wands that the Noble Collection makes. It's the basic one, just for a prop, really.

noblecollection.com/catalog/product.cfm?id=NN7005&catid=21

This is the second one they make, with some modifications. It's got a motion sensing contraption of some sort housed inside, along with what I think is an LED light attached to 2AAA batteries in the handle. I think it is the same size and dimensions as the above model, though I am not 100% certain on that. If there is any difference in size, I assume this model is slightly wider than the above one.

noblecollection.com/catalog/product.cfm?id=NN1910&catid=21

The end result that I'm looking for would be to replace the innards in the handle with some type of green laser pointer. I'm not really looking for anything overly ridiculous, mostly just a visual effect. I'd need the beam to be visible at night, though preferably in lighter conditions too (if someone would tell me the power requirements/safety hazards of that combination, I'd be most grateful). It doesn't need to be able to burn anything, or pop balloons, as I'm guessing that amount of output makes it a lot more of a safety hazard than a novelty.

So now I would need to know what materials I'd need to purchase to make this happen. Ideas:

A very thin, semi-powerful (15-35MW?) green laser pointer, hollow out the handle and situate it inside the hollow part. I'll probably have to buy the wand before I can figure out the exact dimensions I'd be working with.

Another idea would be to use the already-existing battery compartment (2xAAA) in the model with the LED and hook that into a more DIY/home made pointer as I've seen some mention of when I briefly scanned these forums. That of course, seems like something I'd need to brush up on a LOT more information to do. Examples of things I have no idea about: would I be able to make the end laser pointer's guts thinner than if I bought the smallest pointer available (at the necessary output)? Would I likely be able to easily use the existing battery compartment, or should I just probably scrap all the existing guts for the laser pointer specific ones?

So for starters, if anyone's willing to offer me some advice, can you suggest any laser pointers of the required power that would fit easily in the handle, or point me in the direction of the components I would need to assemble the guts myself?

As I said, I have 2 weeks before I get home to Florida, so that leaves enough time for me to research this further as needed.
 





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Re: Asking for help / information for a Christmas

Hmm.. maybe buy a sandstone 30mw module, I'm pretty sure her modules are IR filtered so they would be pretty safe as far as green lasers go. And then put some kind of driver in, and depending on the required voltage, either use standard AAA's or 10440's for twice the voltage.

I'm terrible at modding so I could be wrong ::)

Good luck with the build ;D
 
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Re: Asking for help / information for a Christmas

simplysped2 said:
Hmm.. maybe buy a sandstone 30mw module, I'm pretty sure her modules are IR filtered so they would be pretty safe as far as green lasers go. And then put some kind of driver in, and depending on the required voltage, either use standard AAA's or 10440's for twice the voltage.

I'm terrible at modding so I could be wrong  ::)

Good luck with the build  ;D

No.... SandStone's 30mw Laser Modules are not IR filtered... not for that price..
I bought a 3/4 inch diameter IR filter recently... and it cost be almost $60.00
 
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Re: Asking for help / information for a Christmas

lasersbee said:
[quote author=simplysped2 link=1227200229/0#1 date=1227202353]Hmm.. maybe buy a sandstone 30mw module, I'm pretty sure her modules are IR filtered so they would be pretty safe as far as green lasers go. And then put some kind of driver in, and depending on the required voltage, either use standard AAA's or 10440's for twice the voltage.

I'm terrible at modding so I could be wrong  ::)

Good luck with the build  ;D

No.... SandStone's 30mw Laser Modules are not IR filtered... not for that price..
I bought a 3/4 inch diameter IR filter recently... and it cost be almost $60.00
[/quote]
At what price? I remember seeing in the thread that they offer IR filtered modules.

There's one for 5$ here http://www.dealextreme.com/details.dx/sku.17343 22$ here http://www.dealextreme.com/details.dx/sku.14112 (looks cheap though)
 
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Re: Asking for help / information for a Christmas

Thast's a camera lens that filters everything but UV not IR...
so all that goes through it is UV light...
What you need is an IR filter for laser light...
that does NOT let the IR pass through..

[EDIT]
Same logic as stated above for the DX IR camera filter..
 
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Re: Asking for help / information for a Christmas

lasersbee said:
[quote author=simplysped2 link=1227200229/0#1 date=1227202353]
I bought a 3/4 inch diameter IR filter recently... and it cost be almost $60.00

I'm not sure where you went that you got charged that much. Go to this ebay store: http://myworld.ebay.com/omegabob2/ and send him a message that you are looking for Schott BG38 filters (this is the professional designation for a standard IR blocking filter). He has several sizes to choose from, and apparently they're not worth much because when I ordered one he sent me several extras. You should be able to get one for WELL under $10.
 
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Re: Asking for help / information for a Christmas

Thanks for the heads up about the filters...  I just contacted him...
Still... at $27.00US ea for the filters on his listings...
that's the price SandStone is selling her 40-50mW green modules for...  
 
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Re: Asking for help / information for a Christmas

Don't know.... I just contacted them as well..  :)
I could have saved an E-Mail...  ::)
had you given me the link right away... ;D ;D ;D ;D

Thanks John ;)
 
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Re: Asking for help / information for a Christmas

lasersbee said:
Thanks for the heads up about the filters...  I just contacted him...
Still... at $27.00US ea for the filters on his listings...
that's the price SandStone is selling her 40-50mW green modules for...  

I don't think he lists BG38 filters at his ebay store. You have to ask him for them specifically (or at least you used to). They should be about $5.00 or less.. :-?

Unless he raised his prices.. damned economy :mad:

Also his filters are genuine Schott glass......Very effective and very high quality.
 
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Re: Asking for help / information for a Christmas

lasersbee said:
Don't know.... I just contacted them as well..  :)
I could have saved an E-Mail...  ::)
had you given me the link right away... ;D ;D ;D ;D

Thanks John ;)


O00oops :p
 
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Re: Asking for help / information for a Christmas

Robrain,
First, welcome to the forum, there is a lot of knowledge in this community, you should be able to find whatever knowledge you desire here :)

Second, here is your link, you will be able to add your own after 10-posts or so: http://www.noblecollection.com/catalog/product.cfm?id=NN7005&catid=21

I wouldn't worry about the IR-issue with lower-powered laser-modules. If you are concerned, use one of the suggested IR-filters, or remove one from a $20 web-cam. Use the filter on your laser, and scan 3D digital images into your computer with the "now IR-sensitive" web-cam that you have left over http://www.david-laserscanner.com/

I am not sure if the wand comes apart in halves, but I will assume it does. You should be able to just figure a way to mount the module inside of the wand, ahead of the battery-compartment and cut a small exit-hole for the beam to pass out the end of the wand, (you could even make it light the tip a bit too).

As far as wiring goes, that should be pretty staright-forward. The module comes with it's own driver already attached and ready to go, you only need to provide 3V-5V to the driver's +and-, the whole body of the module is usually a positive-contact and the spring at the end is negagtive. If you have 2alkalines in the wand already, that should be enough, you can probably just wire the module in after whatever switch runs the sound-module and it would power the laser-module simutaniously. At the worst you would just have to wire you own switch, which you will probably want to do anyway if the existing switch is sound-operated, at least add a "arming-switch" so that the wand does not blind someone for making a loud-sound.

This should be a pretty straight-forward and reasonably-priced conversion, make sure to keep us posted. Let us know if you have any questions.
DH
 




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