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Old 04-26-2013, 08:48 AM #1
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Default Lenses for IR

Quick question, are lenses coated for red lasers (such as the standard aixiz glass lens) also suitable for IR (980nm)? If not, where can one buy IR lenses for aixiz?



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Old 04-26-2013, 09:14 AM #2
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Default Re: Lenses for IR

Have you tried looking on eBay> 10 Pcs 980nm IR Laser Collimation Lens MP905 10 5 Metal Frame Coated Glass Lens | eBay

http://www.ebay.com/itm/Double-Conve...item20c501170e

http://www.ebay.com/itm/NEW-PCV-Lens...item5ae6378205
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Old 04-26-2013, 12:18 PM #3
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Default Re: Lenses for IR

Quote:
Originally Posted by Grix View Post
Quick question, are lenses coated for red lasers (such as the standard aixiz glass lens) also suitable for IR (980nm)? If not, where can one buy IR lenses for aixiz?
Here 980nm IR lenses PCX
980nm Laser-Line Coated Plano-Convex (PCX) Lenses | Edmund Optics

And PCV IR lenses for wavelengths 750-1000nm
NIR II Coated Plano-Concave (PCV) Lenses | Edmund Optics
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Old 04-26-2013, 05:25 PM #4
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Default Re: Lenses for IR

A "red" lens wil be fine. You'll lose more power (5-10%?) but you won't be able to tell the difference without a power meter.
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Old 04-27-2013, 10:50 AM #5
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Default Re: Lenses for IR

Thanks for the replies. The lenses that were linked are not quite what I'm looking for unfortunately, they are too expensive and I only need one for now.

Cyparagon: Are that estimate for 980nm or 808nm? Pretty large difference in wavelength. If it is indeed valid for 980nm, nice, 5-10% isn't a big deal.

Will an uncoated acrylic lens work maybe? The laser is around 3-400mW, will the acrylic one melt from that?
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Old 04-27-2013, 04:25 PM #6
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Default Re: Lenses for IR

Should be just as safe as when operating at visible, so yes. Near IR isn't some totally different electromagnetic phenomenon like some people think. It behaves very similarly to red. Quick googling turned up:

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