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ArcticMyst Security by Avery

Focusing lens to fit an Arctic training cap

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Delorean Geek

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I'm wanting a focusing lens for my Arctic, but I do not want to spend 50.00 for a bunch of other lenses I will never use, nor do I want o wait 6 months for it.

I thought about removing the lens from the included training lens and replacing it with a magnifying lens from a jewlers loupe, but I'm worried about the lack of any A/R coating causing damage to the diode. Does anyone make a small lens with the proper coatings for focusing a beam, and will be small enough to fit into the training lens cap of the Arctic?

Thanks in advance
 
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Leodahsan

Leodahsan

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I've used red coated lens on a 445 before. With >50% the power reflected, he lived fine (no drops on the output) 'till I touched his wire and a ESD happened. The lacking of AR shouldn't be a problem, you will just lose a little power.
 
Eudaimonium

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No you cannot make that happen, sadly.

Beam exiting from Arctic's main body is already focused and putting a magnifying lens in front of it will only make a fixed focal point inch or two from the last lens. Threading the lens back and forth will make no difference.

So no, you cannot make an Arctic focusable unless you come up with a plan to move the inner collimation lens by turning the external lens cap.

Sorry.
 
Krogith

Krogith

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Delorean Geek said:
I'm wanting a focusing lens for my Arctic, but I do not want to spend 50.00 for a bunch of other lenses I will never use, nor do I want o wait 6 months for it.

I thought about removing the lens from the included training lens and replacing it with a magnifying lens from a jelers loop, but I'm worried about the lack of any A/R coating causing damage to the diode. Does anyone make a small lens with the proper coatings for focusing a beam, and will be small enough to fit into the training lens cap of the Arctic?

Thanks in advance
Click to expand...

Euda is right

If you want to "Make" a focusable Arctic goto this thread
http://laserpointerforums.com/f55/arctic-host-feeler-interested-read-59873.html
 
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Delorean Geek

Guest
I probably should have been more specific. I don't expect the beam to be focusable, only focused at a fixed point a few inches in front of the host. The burning/focus lens is avaliable from WL, but surely I can find a lens that would work in my training cap without me having to buy 50.00 worth of lenses and shipping.
 
Krogith

Krogith

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Delorean Geek said:
I probably should have been more specific. I don't expect the beam to be focusable, only focused at a fixed point a few inches in front of the host. The burning/focus lens is avaliable from WL, but surely I can find a lens that would work in my training cap without me having to buy 50.00 worth of lenses and shipping.
Click to expand...

You can use a magnify glass. Might be able to find one the size your thinking to fit in there. Make sure it's Glass tho...
 
Leodahsan

Leodahsan

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Hmm you can't transform a laser into a focusable laser, unless you remove the focus lens all the time you want a parallel beam. Period :)
 
ZapU

ZapU

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Here's an idea I used for my G1 before I tried refocusing the collimating lens.

Hmm you can't transform a laser into a focusable laser, unless you remove the focus lens all the time you want a parallel beam. Period
Click to expand...

Yes, you can.

I posted a tutorial on how to focus the collimating lens in the G1 beast link in my sig. I put a Jayrob 405-G-1 collimating lens in my G2 and can easily focus it also. You have to be willing to risk voiding your warranty if you do it.
 
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Leodahsan

Leodahsan

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Hmm, I was talking about "putting a magnifying lens" on the laser, and move it to focus or unfocus.. good diy you did on your arctic uh? :)
 
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Delorean Geek

Guest
Well I made one today. It cost me $3.00 and about 20 minutes. I was in Harbor Freight today and saw this set of glass jewelers loups:

4924-p3051111.jpg


I took apart the training lens:
4923-p3051110.jpg


After figuring out which power lens to use (2X yields the longest focal distance of about 6''), I took the lens out of the loupe and test fitted into the training cap, it was too big:
4925-p3051112.jpg


Being it was cheap uncoated glass, I covered both sides with tape and ground the outside down to the right diameter:
4926-p3051114.jpg


Then simply assembled the training lens with the new burning optic:
4927-p3051115.jpg


The finished lens instantly burns through anything with it's tiny beam!
4928-p3051117.jpg


Although I do not have a laser meter, I checked the reflection back from the loupe glass before I assembled the lens and it looked to be minimal
 
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