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Old 02-11-2007, 09:00 PM #1
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Default IR filter and cap for leadlight

Here is an idea someone else came up with for a cap to the leadlight and similar size lasers, my idea was to add the filter.
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IR filter and cap for leadlight-cap_and_irc-21_filter_12_mm.jpg  


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Old 02-11-2007, 09:04 PM #2
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Default Re: IR filter and cap for leadlight

The filter is an IRC-21 from (http://www.optics-online.com/irc.asp) I use the IRC21 and IRC30. The both block almost all IR (http://www.optics-online.com/OOL/pics/IRCcurve40.gif)

Here is the 12mm IRC-21 in the fliptop toothpaste cap.

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IR filter and cap for leadlight-irc-12_12mmfilter_inside_cap.jpg  
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Old 02-11-2007, 09:05 PM #3
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Default Re: IR filter and cap for leadlight

here it is on a leadlight...
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IR filter and cap for leadlight-leadlight_and_cap.jpg  
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Old 02-11-2007, 09:07 PM #4
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Default Re: IR filter and cap for leadlight

Not the prettiest thing in the world, but you can stick it in your pocket without getting the laser lens all dusty...
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Old 02-12-2007, 01:42 AM #5
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Default Re: IR filter and cap for leadlight

VERY good job on that ! On some (my 120mw Fleabayser included) that would be handy to have - if nothing else, I think the IR filter only takes like 5% away from the 532nm power - is that right ?
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Old 02-12-2007, 01:38 PM #6
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Default Re: IR filter and cap for leadlight

It is supposed to take away about 5% of the 532, but all the IR. Obviously power drops a bit. Some initial experiments I did with 2 leadlights and found a total drop of 11 percent. Fortunately, it is a reversible drop - just take of the cap...
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Old 02-12-2007, 01:48 PM #7
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Default Re: IR filter and cap for leadlight

You did a nice job making that. It looks very professional and should suit the purpose great. And like you said, it is removable when you want to use it without it on.


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Old 02-12-2007, 06:36 PM #8
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Default Re: IR filter and cap for leadlight

Yes - it is VERY nice ! Great job - can you post the link for the place you bought the filter again, please?
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Old 02-12-2007, 09:49 PM #9
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Default Re: IR filter and cap for leadlight

Quote:
Originally Posted by stevetexas
The filter is an IRC-21 from (http://www.optics-online.com/irc.asp) I use the IRC21 and IRC30. *The both block almost all IR (http://www.optics-online.com/OOL/pics/IRCcurve40.gif)

Here is the 12mm IRC-21 in the fliptop toothpaste cap.
Here is where I got them. The 12mm fits best.
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Old 02-12-2007, 11:45 PM #10
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Default Re: IR filter and cap for leadlight

Quote:
Originally Posted by stevetexas
[quote author=stevetexas link=1171231216/0#1 date=1171231451]The filter is an IRC-21 from (http://www.optics-online.com/irc.asp) I use the IRC21 and IRC30. *The both block almost all IR (http://www.optics-online.com/OOL/pics/IRCcurve40.gif)

Here is the 12mm IRC-21 in the fliptop toothpaste cap.
Here is where I got them. *The 12mm fits best.[/quote]

OKAY...I did NOT see that earlier ! (DOH !) Thanks ! I think this will make a great sticky !
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Old 02-12-2007, 11:47 PM #11
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Default Re: IR filter and cap for leadlight

I agree SenKat
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Old 06-04-2007, 10:13 PM #12
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Default Re: IR filter and cap for leadlight

You should spray paint it.
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Old 09-12-2007, 08:54 PM #13
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Default Re: IR filter and cap for leadlight

This looks like it's probably Schott BK38 glass. It has a great cutoff for just this kind of application. Is there any interest in a 6-8mm dia version so that you can set it behind the metal head/cap instead of in front of it in the toothpaste cap? I may be able to come up with them. I'm looking into it now.
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