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How to Change Sci-Fi Arcane 2.0 Lens

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Hi, I just got an Arcane 2.0 635nm. I believe the Focus Adapter has a G-2 lens and I'd like to replace it with a 3-element lens to get a better shaped beam. Unfortunately I cannot get the lens holder (and lens) out of the Focus Adapter. I've already scratched the threads a little bit on the inside of the holder going through the top using something sharp to pry on the two slots inside. I can't use a flathead screwdriver because the hole is smaller than the holder. There are no slots on the bottom of the holder to grab. So I figured I should ask for some help.

I'm wondering if Sci-Fi glues the lens holder into the FA and if so, is it possible to unscrew the G-2 lens from the holder and replace it with the insides of a 3-element lens? Does that mean I'll have to unscrew three pieces from a 3-element lens? Can anyone help?

I already emailed Eitan and I thought I'd try here too. Here's what the FA looks like.





And for the time being, I've got another FA on it with a 3-element lens but I'd really like to have the Arcane 2.0 matching FA.




Thanks.
 

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hummmm.... usually a pair of needle nose pliers should do the trick.(it a must have tool if you want to remove something from asembly...)
 
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hummmm.... usually a pair of needle nose pliers should do the trick.(it a must have tool if you want to remove something from asembly...)
Thanks for the fast reply. That's what I used to try, a pair of needle nose pliers. Here's a better closeup of the FA, the slot is right up against the top so all I can do is get one of the needle noses (is that the right term :thinking:) in at a time.

 
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uh you don't insert anything into the lens holder..... you hold the side of the holder with pliers and turn them anti-clockwise....
 
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If you mean grab the lens holder's threads with the pliers so I can unscrew it from the FA, I'm trying not to damage the holder threads. It's in there very tight. If it's glued/epoxied in, e.g. with J-B weld, I especially don't want to damage the nice matching FA. I'm OK with sacrificing the lens holder and lens if there's no other way.
 
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It is not glued. Just take a pair of pliers and release it. I can sell you an extra adapter for like $10 with lens in it if needed :beer:
 

GSS

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To make you feel better wrap some cloth around the lens threads when you put the pliers to it, should unscrew with very little preasure
 
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Thanks everyone. I used a piece of cardboard and a pair of heavier duty bent tip pliers and it easily came out.



So now I have another question. Which way does the 3-element lens go in?

#1) This side facing out?



or

#2) This side facing out?



I'm also checking with the person I bought it from on whether the AR coating works for 635nm. Is there a way to check w/o special equipment? I have red and green laser pointers.

EDIT: To be clearer, "This side facing out of the laser when the FA is attached to the host"
 
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I'm also checking with the person I bought it from on whether the AR coating works for 635nm. Is there a way to check w/o special equipment? I have red and green laser pointers.
Look closely at the lens in the light, the ones AR coated for red will have a slight blue color, the others have a slight yellow color. In any case it will still work, but the correct AR coating is better. Both DTR and AixiZ sell the correct lens.

Alan
 
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Thanks everyone. I used a piece of cardboard and a pair of heavier duty bent tip pliers and it easily came out.



So now I have another question. Which way does the 3-element lens go in?

#1) This side facing out?



or

#2) This side facing out?



I'm also checking with the person I bought it from on whether the AR coating works for 635nm. Is there a way to check w/o special equipment? I have red and green laser pointers.

EDIT: To be clearer, "This side facing out of the laser when the FA is attached to the host"

#1 side is going in the adapter. #2 side will face the laser diode :)
 




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