This Auction is for 

One (1) 

20mm FD FL=63mm (2.5)"

AR (Anti-reflective Coated) ZnSe Lens for 30-120W lasers.

Also me made some 12.7mm, 20mm and 19mm lenses as well. Please see my other items.
We can resurface your lens if we do not have the size you need!
Please see our 100% seller feedback. 

Here is what our buyers said:

*****

Worked perfect & at 10% the cost of ordering from the machine manufacturer

******

A few months ago I purchased a 19mm 2" focal length lens for our GCC 100w CO2 laser. I am a shop manager for a university and this lens / laser has seen ~8hrs of constant use for months. The lens has performed perfectly and was WAY less expensive than an OEM replacement.
We would like to purchase a few replacements to have on hand.

******

This lens is 100% suitable for any CO2 LASER SUCH AS GCC, Epilog, Full Spectrum laser & Made in China CO2 hobby laser cutters/engravers as well. AS LONG AS diameter and power match (these are for up to 120W CO2 lasers), you are good to go!

Please verify the size. While this auction is for 20mm laser lens I have other sizes as well!

If you need any other sizes or quantities please let us know we can make one for you. 

Buyer to exercise due diligence to assure fit and size. Please check the size of your existing lens to be sure this will fit your laser engraver/cutter 

WE ALSO SELL MIRRORS FOR CO2 LASERS. Check out my other items!
      

NEW 

Here is what you will get:

• 1 ZnSe lens. 100% quality guarantee!
     

Shipping

• Your item will be shipped next business day unless otherwise noted       
• All purchases over $249 will go with Signature Confirmation per Ebay guidelines
• All purchases over $99 will be shipped via USPS Priority Mail so you will get them soon

Seller/Buyer Protection       

• To protect both sides EVERY item we sale is being carefully photographed along with the shipping label created and all pictures are being stored for further reference.

Returns

• As we make/convert every item for particular customer needs and operate on very slim margin, converted cameras we sell are being considered custom made and are non returnable and non refundable.
• Buyer to do  due diligence to be sure what they buy is what they need. If you have compatibility questions please ask them BEFORE you buy.
• We give 48hours unconditional DOA wguarantee This means that should Item you bought arrive damaged we will replace or fix it at no charge to you. In rare case if we do not have replacement we might issue you refund at our discretion.
• ONCE YOU INSTALL THIS LENS INTO YOUR MACHINE _ YOU OWN IT! 
• There are NO returns on used lenses REGARDLESS TO THE REASON!
• No other forms of returns are accepted
     

Different types of conversion we generally offer

• Full Spectrum conversion. Full spectrum of light from about 280nm to 1100nm will reach your cmaera sensor. This numerical range depends of the type of the camera sensor.
• Infrared conversion (650nm, 750nm or 800nm)
• Astronomy conversion with extension to 700nm
• UV conversion with Hoya U-340 and U-360 glass
        

Here you can see transmission curve of the Full Spectrum conversion filter we use.

As you can see it has practically 99%+ transmission in visible part of the spectrum!

Below you can see transmission curves of original  Canon EOS T3, T3i, T4 camera IR Cut filters. There are two filters in these camera assemblies. We called front one the one which faces to the lens and rear filter is the one faces to the sensor.

To make Astronomic conversion of your Canon camera we can remove Rear filter only so:

1. Your camera (T3i and T4i) will retain Ultrasonic cleaning system. Please note T3 does not have it!
2. You still will be able to take normal color pictures with custom white balance though.

For Infrared conversion we will remove IR Cut filter and replace it with Infrared filter.

On this chart you can see that original Sony UV/IR Cut window was replaced with Neimart Dual side multilayer anti-reflective coated borosilicate clear pass window has been installed instead of replaced IV/IR Cut window

We Ofer:

         
• Infrared converted cameras
• Full Spectrum converted cameras
• UV converted cameras
• IR filters
• IR and Full Spectrum conversion service
• Sapphire crystals
• NaI scintillation crystals
• CsI Scintillator crystals
• Consulting services on optics and crystal growth

The fact of purchase constitute complete agreement and acknowledgement of rules outlined below. Should you disagree with any of this points you MUST refrain from purchase.

         
• We 100% guarantee only what we say on the listing description
• If something was not described or clearly promised then most likely it will mot be provided/delivered
• There are no guarantee imply on fit or usability of the item we sell to you particular need
• Our liability is strictly limited to the price of the item buyer paid to buy the item from us
• Our consulting services provided on AS IS WHERE IS basys and represents our best knowledge and best ability
• Our conversion and/or custom modification services provided on  AS IS WHERE IS basis and represents our best knowledge and best ability
• In case you send us your camera for conversion you must disclose in advance any electrical, mechanical or software malfunctions your camera has. If your camera does have malfunctions you failed to disclose we will charge you $40 inspection fee and will return your camera to you without further modifications. It is OK to have issues with the camera as long as those issues disclosed in advance.