How to put IR filter in green laser module?

• Aug 10, 2011

• #1

foulmist

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Hello fellow laserers ,

I think I am going to buy myself a 20-30mW green laser module... I know that it will most likely be missing the ir filter... I've got one off my web cam so I was wonder where exactly is this filter put...??

Does somebody have a green module dismantled and show me exactly where to put it? With photos . I don't want to disalign the chip or brake something... I never worked with one of these DPSS lasers... only bare diode ones...

I will appreciate the help...

I already ran a search on the forum but I couldn't see it and my eyes started hurting already... there is a video on youtube which ISN'T showing anything where to put that filter...

I apologize if there is a thread already on that if so pls send me a link and I will delete the thread.. (if I can, if not I'll let the moderators do it)

:beer:

 

Last edited: Aug 10, 2011

• Aug 10, 2011

• #2

Trevor

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Mounting it at the aperture is fine.

-Trevor

 

• Aug 10, 2011

• #3

weeba2kv

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Order an ir filter and glue it on the aperture

 

Last edited: Aug 10, 2011

• Aug 10, 2011

• #4

weeba2kv

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lol Trevor was faster then me haha

 

• Aug 10, 2011

• #5

InfinitusEquitas

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^^^What they said

But a question for you, why do you want an IR filter for a 30mW laser in the first place?

 

• Aug 10, 2011

• #6

foulmist

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Trevor said:

Mounting it at the aperture is fine.

-Trevor

Click to expand...

weeba2kv said:

Order an ir filter and glue it on the aperture

Click to expand...

InfinitusEquitas said:

^^^What they said

But a question for you, why do you want an IR filter for a 30mW laser in the first place?

Click to expand...

thanks for answers
I thought that even the low power greenies emit harmful IR light which could be filtered.... or I am wrong ... I am not sure

 

• Aug 10, 2011

• #7

InfinitusEquitas

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foulmist said:

thanks for answers
I thought that even the low power greenies emit harmful IR light which could be filtered.... or I am wrong ... I am not sure

Click to expand...

IR light is still just light... you just can't see it - but it's no more or less harmful

With the lower power green lasers, the green light will be dangerous to you long before IR becomes an issue.

You can install an IR filter just for fun... but if you intend to just use the laser to point in the sky, or a short distance away from yourself on non reflective surfaces, it's not really needed imho.

The reason that many people on here install IR filters is that they want to try to burn with their green lasers. Since there is a high risk in burning - the laser is close to your face - and IR filter is typically a must because most goggles do not block it.

If you do plan to burn with a green laser I would recommend both installing an IR filter and getting IR blocking goggles - better safe than sorry.

 

Last edited: Aug 10, 2011

• Aug 11, 2011

• #8

foulmist

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Thanks for the thorough answer there InfinitusEquitas +1 :wave:

 

• Aug 11, 2011

• #9

weeba2kv

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but i just wonder a lilbit...
foulmist own a freaking 445 doing over 1 watt and he's babeling about a lil 30mW green lol sorry but kinda useless Thread here

Oh and @ InfinitusEquitas your avatar pic is nice =) ( i guess those are your lasers all fired up haha ) ?

 

Last edited: Aug 11, 2011

• Aug 11, 2011

• #10

foulmist

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weeba2kv said:

but i just wonder a lilbit...
foulmist own a freaking 445 doing over 1 watt and he's babeling about a lil 30mW green lol sorry but kinda useless Thread here

Oh and @ InfinitusEquitas your avatar pic is nice =) ( i guess those are your lasers all fired up haha ) ?

Click to expand...

ummmm YES I am BABELING about it because I am not aware where the IR filter is put in these modules... I might get a more powerful one someday it's not NECESSARILY 30mW...

that's why the thread is titled "How to put IR filter in green laser module?" not "How to put IR filter in 30mW green laser module?"...

someone might find it useful for his 200mW or 1000mW ... don't you think???

:beer:

 

Last edited: Aug 11, 2011

• Aug 11, 2011

• #11

weeba2kv

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Ok sorry that i use the word ( babeling) might gives a negative feeling.
But it's obvious to add IR filter , if possible , inside a pointer so it looks clean , i mean where else to add IR filter.

 

• Aug 11, 2011

• #12

weeba2kv

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adding IR filter o-like >350

the laser ok fine.

open it up

replace the glass for IR filter and your done.

 

Last edited: Aug 11, 2011

• Aug 11, 2011

• #13

foulmist

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No problem there,

Yes, it might be obvious for most people here but I thought it might be put somewhere before the final collimating lens... somewhere inside the module ... I see now that it can be placed after it I might be stupid but I wanted to ask just to be sure :beer:

 

• Aug 11, 2011

• #14

weeba2kv

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your welcome
IR filter is alwasy placed after the final laser assembly

 

Last edited: Aug 11, 2011

• Aug 11, 2011

• #15

InfinitusEquitas

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weeba2kv said:

Oh and @ InfinitusEquitas your avatar pic is nice =) ( i guess those are your lasers all fired up haha ) ?

Click to expand...

Not all mine, but more than half... and you can't see most in the picture

It did look amazing at night... was a very humid night.

 

• Sep 5, 2013

• #16

biddy79uk

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Does a DvD Drive have a IR filter you could use ?
Or use the 1 out of an old web cam