Installing an IR Filter on spymode greenie

[Nicker]

I was going to remove an IR filter from the CCD sensor on a canon digital camera I have and try to install it on the spymode laser.

What would be the best place to month the filter? Any tips on what to use when mounting? I was thinking just on the end of the screw off tip, but would it be better if I mounted it on the laser head itself somewhere?

Thanks for the help, as I would like to save my eyes.

 

[stevetexas]

I've thought about this myself quite a bit but haven't done it yet.

I think you could easily insert a filter into the path of the beam between the lens and the aperature housing. the problem would be heat if it were a plastic filter. you'd burn it up very quickly and possibly damage the lens if it were plastic as well. I'd go with a glass filter for this application.
you'd need to be a bit careful reassembling it so you didn't crack the filter.

 

[Corona]

Generally they're mounted just before the collimating optics. If you mount it at the output aperture(post-collimator), you will degrade the beam quality and divergence somewhat.

Obviously it has to be positioned downstream of the green generating crystal set

 

[Nicker]

Well I am going to take apart 3 old digital cameras and try to find a glass IR filter. If one of them is glass it should fit somewhere hopfully. I like my eyes!

 

[Nicker]

Can you describe where the collimating optics are on this brakedown?

http://sbk.phalkin.com/Lasers/Mod/PICT0947.jpg

 

[Daedal]

On the old faithful, the collimating optics will be on the second to last part you have there from the left side. The black thing inside the brass tube at the end has the collimating lense inside it.

Good luck;
DDL

 

[Daedal]

Besides, these things have the IR filter built in, as far as all mine go. If it's not the greenish optic glued to the middle piece, then it'll be inside with the collimating lens.

I got lost trying to find mine before. Just get a $10 webcam, hack it apart and remove the IR filter. then use it as your peripheral vision. What I do is plug it into a laptop and use my power supply. Turn it on, and look from the side. If you see pinkish/purplish haze, then it's not IR filtered.

It works very well when trying to work with IR diodes especially. (yes, this is an IR diode, I know )

Gool luck;
DDL

 

[Nicker]

Well according to this website:



http://www.lasercommunity.com/the-truth-about-newwish-edit-outdated-t10149.html



It says the newwish lasers are ones with an IR filter but the spymode ones are lacking it. I actually have a webcam coming in the mail today so I will try and see if I can see IR in it. In two days I will have a set of IR safety glasses to use.

 

[Daedal]

Hmm... interesting. It seems to me like the heads are different on yours versus the ones pictured there.

--DDL

 

[Aseras]

edit This is a leadlight not a spymode.. it has an IR filter, that's that cyan little crystal that's glued on there. just FYI.

 

[Nicker]

Well I dont have the newwish one, it states two lasers:

NewWish (GOOD filtered laser )
Spymode (BAD unfiltered laser )

And I have the bad unfiltered one, as it says in the write-up.


This is the only reason I am a little scared.

 

[Nicker]

Okay Aseras!!

So I went on looks alone based off that website that it was a spymode laser, but I guess its not, just the same package. Thanks for the clarification, so my eyes should be somewhat safe! :laughing:

 

[Daedal]

That's what I thought... The NewWish lasers and Spymode lasers both have a different look to them. What you have there is the Leadlight. hence the "Old Faithful" in my previous post.

--DDL

 

[Nicker]

Is this the same board as the 'old faithful' leadlight and is the 2nd picture the IR filter also? (this is a differnt laser)

 

[Daedal]

Change of heart... you got me thinking... and yes, I do have that one as well... it's the AtlasNova circuit...

--DDL

 

[Daedal]

Here's mine if you want to compare...

 

[Nicker]

Well I do think I got it from vital*spirit or whats his name on ebay... would it still be the same as abelands? That cyan piece has to be an IR filter right, nothing else it could be? I had the laser up and near my webcam today, dident see anything else differnt, and I saw diodes in a remote fine..

 

[Daedal]

ya well... there's only so much an IR filter can do. Most webcams already have an IR filter but they still see the remote light because it's powerful. I have a $700 camera and it sees it just the same. If you want to go to extremes, hack open your webcam, as I did, and then take a look at what you see on a sunny day... TONS of IR. then, to test the little cyan piece you have (although I wouldn't suggest) put it in there instead of the one you took out, and check if you see a difference.

Another, easier, way is to make an IR-only camera... check this here and you could have something that sees only IR to check even the collimated beam comming out of anything...

http://geektechnique.org/index.php?id=254

GL;
DDL

 

[Nicker]

Nice, im going to try that with my old camera and see what I can make of it. Thanks for your advise and help again!

 

[Daedal]

Np, anytime;
DDL