20mm CO2 Laser Lens, 50.8mm Focal Length, PVD ZnSe Material, 30W-100W Compatible, For CO2 Laser Engraving & Cutting
Condition: New
Buy Now, Pay Later
As low as
$5
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
15 left in stock
Arrives
Friday, May 1
Recently Viewed
Size: Dia:20mm FL:50.8mm/2"
Features
- Material: High quality PVD ZnSe material. Compatible power: 30W-100W
- Diameter: 20mm/0.79"; Focal Length:50.8mm/2"; Thickness:2.0-2.2mm/0.08"; Transmittance: 99.5%
- Exquisite Technology: Superb Double-sided solid coating, precision slicing, polishing and grinding process, Reduced laser loss, wiping resistant, high temperature resistance, excellent optical properties, high working efficiency.
- High efficiency: PVD ZnSe CO2 laser focus lens has Focusing Spot Size more Smaller, the energy is more concentrated, making the CO2 laser engraving, cutting machine more efficient.
- Application: CO2 laser lens are mainly used in CO2 laser engraving and cutting well.
Features
- Material: Hight quality PVD Znse crystal material
- Diameter:20mm/0.79";Focal Length:50.8mm/2";Thickness:2.2-2.3mm;Transmittance: 99.5%
- Double-sided solid coating,Wiping resistant,Extended durability,Precision slicing polishing and grinding processes,High temperature laser resistance,Excellent optical properties,High working efficiency.
- It's good for 40W/50W/80W/100W/130W/150W CO2 laser 10600nm 10.6um
- It can be used for CO2 laser engraving and cutting well.
Brand: CNCOLETECH
Style: Laser
Operation Mode: Automatic
Package Dimensions: 3.82 x 3.39 x 0.91 inches
Item model number: 905211
Is Discontinued By Manufacturer: No
Item Weight: 0.95 ounces
Manufacturer: Shanghai Top Nine Industrial Co.,Ltd
Country of Origin: China
Date First Available: May 9, 2016
Brand: CNCOLETECH
Material: ZnSe
Color: 20mm
Style: PVD ZnSe
Item Weight: 0.02 Kilograms
Brand Name: CNCOLETECH
Manufacturer: Shanghai Top Nine Industrial Co.,Ltd
Model Number: 905211
Manufacturer Part Number: LENS-20-508
Unit Count: 1.0 Count
Color: 20mm
Style Name: PVD ZnSe
Item Weight: 0.02 Kilograms
Operation Mode: Automatic
Level Measurement Type: laser
Material Type: ZnSe
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, May 1
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: Dia:20mm FL:50.8mm/2"
I've been buying inexpensive lenses for my CO2 laser on Amazon for a couple of years now and have never had a problem with them. I've tried lenses that cost twice as much and saw absolutely no difference in performance. I consider lenses to be a consumable and thus the less expensive the better and these work well.
...
show more
Reviewed in the United States on September 7, 2025 by Shane M
Size: Dia:18mm FL:50.8mm/2"
Why did you pick this product vs others?: The item met the specifications I needed.
Reviewed in the United States on June 21, 2025 by Dan Krusienski
Size: Dia:20mm FL:50.8mm/2"
Excelente
Reviewed in the United States on January 23, 2026 by juan felipe delgado beetar
Size: Dia:18mm FL:50.8mm/2"
I bought the air assist that allows use of 18mm lens, so I gave this lens a shot, the price is decent and the spec. Looked not much different than the more expensive brands. Got it today with also the mirrors from The same sellers. So I installed it in my K40 laser engraver replacing the stock laser head with the new LO head with air assist with the new lens and mirror. InScrewed up the alignment at first, but after making some adjustment and set power to 10% and test it on a cardboard. BAM! It cut thru the cardboard in one pass while before it only leaves a line! Who knows, maybe the alignment was off before, but I definitely think the lens made a difference, for the quality of the coating on both the lens and mirror are better than the stock. It is a worthy upgrade, now marking on stainless turns out great, really helps serve the purpose of getting the K40 in the first place.
...
show more
Reviewed in the United States on February 17, 2020 by Sqoopi
Size: Dia:20mm FL:50.8mm/2"
This lens is fantastic. I've been using much more expensive lenses in my laser cutter but no more. This lens out cuts and out engraves the pricier ones. Honestly, when I first got it I wasn't too impressed. Although it was very well packaged, the lens appeared to be a little cloudy and I really didn't expect much out of it. However, once I got it in my machine it performed better than I ever would have imagined. I won't be going back to my old lenses.
...
show more
Reviewed in the United States on May 30, 2023 by Rich
Size: Dia:20mm FL:50.8mm/2"
Awesome perfect fit works great
Reviewed in the United States on June 3, 2025 by rickey wayne maston
Size: Dia:20mm FL:50.8mm/2"
Good
Reviewed in the United States on July 31, 2025 by Amazon Customer
Size: Dia:19mm FL:50.8mm/2"
I bought a 2.0" focal length ZnSe lens, 19mm diameter. This lens is thicker at the edge than OEM lenses from universal laser, measuring 2.4mm Because of this extra thickness, it doesn't fit in the OEM aluminum holder from Universal Laser Systems. The OEM plano convex Lens from universal is about 2.3mm thick in the center, and 1.75mm thick at the edge. It is completely flat across the bottom. The lens from cole is 3.25mm thick measured from the outside bottom edge to the middle of the top. they claim 2mm thick +/- 0.1mm, so this one is way out of tolerance. Despite being sold as a plano-convex lens, it is actually a meniscus lens, and concave-convex in construction. Because it is thicker than the OEM lens and out of spec, it does not quite fit into the carriage of the laser cutter. We have a couple of these cutters, and it was too tight to install on all of them. if you look along the side of the lens holder with the lens mounted, you can actually see that the lens sits slightly proud of the aluminum mount. with the OEM lens, the lens sits below the thickness of the aluminum lens mount. I made sure not to put any glue directly below the lens (only on the edges), so there is nothing between the mount and the lens making it too thick. the lens is simply not compatible with my cutter. I have a universal VLS-6.60 cutter that I am using this in using the OEM aluminum lens holder. I removed the broken lens by soaking in acetone for a few minutes to soften old glue. After carefully cleaning old glue from aluminum holder, I used loctite AA 352 adhesive (a UV setting acrylic adhesive), and cured the glue with a small blacklight for a few minutes. clean up of any stray glue with a q-tip dipped in acetone was simple and easy. Make sure the lens is in the holder the right way. The convex side goes facing the aluminum lens holder. glue only in the corners of the holder if you don't want a giant mess. this takes a little bit of skill, but it is entirely doable, and seems worth the effort so far. Buy a different lens, if you have a universal laser cutter. I am returning this one if I still can. Their more expensive CVD IIVI ZnSe lens meniscus lens, will actually fit, so long as it is in spec, and cuts great for me so far.
...
show more
Reviewed in the United States on January 19, 2018 by JB