--- product_id: 202326265 title: "MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4\"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W" brand: "mcwlaser" price: "230.69 DT" currency: TND in_stock: true reviews_count: 9 category: "Mc Wlaser" url: https://www.desertcart.tn/products/202326265-mcwlaser-cvd-znse-focus-lens-dia-20mm-fl-4-101 store_origin: TN region: Tunisia --- # 20mm diameter precision High-temp laser resistance β‰₯99.5% transmittance MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W **Brand:** mcwlaser **Price:** 230.69 DT **Availability:** βœ… In Stock ## Summary > 🎯 Sharpen your laser’s focus, cut like a pro! ## Quick Answers - **What is this?** MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W by mcwlaser - **How much does it cost?** 230.69 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/202326265-mcwlaser-cvd-znse-focus-lens-dia-20mm-fl-4-101) ## Best For - mcwlaser enthusiasts ## Why This Product - Trusted mcwlaser brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Double-sided solid coating ensures wiping resistance and extended lens durability under intense use. - β€’ **Next-Level Efficiency:** Precision slicing and polishing deliver superior optical performance and faster work cycles. - β€’ **Perfect Fit for Power:** Optimized 20mm diameter and 101.6mm focal length tailored for 40W-200W CO2 lasers. - β€’ **Upgrade Your Workflow:** Replace aging lenses to instantly boost cut quality and maintain professional-grade results. - β€’ **Crystal-Clear Precision:** Experience ultra-high 99.5% light transmittance for razor-sharp engraving and cutting. ## Overview The MCWlaser CVD ZnSe Focus Lens is a premium 20mm diameter, 101.6mm focal length lens designed for CO2 lasers ranging from 40W to 200W. Crafted from high-class US II-VI CVD ZnSe material, it offers exceptional β‰₯99.5% transmittance and double-sided solid coating for durability and high-temperature resistance. Ideal for laser engraving and cutting, this lens enhances precision, efficiency, and longevity, making it the go-to upgrade for professionals seeking flawless results. ## Description Product description Attention Double-sided solid coating,Wiping resistant,Extended durability,Precision slicing polishing and grinding processes,High temperature laser resistance,Excellent optical properties,High working efficiency.Laser transmittance can be as high as 99.8% Normally, the laser lens of focal length 38.1mm and 50.8mm is suitable for engraving.If used for cutting, we suggest to work with the laser lens of focal length 63.5/76.2/101.6/127mm Causes of lens broken and tips (1) Ensure that the air cooling is good, otherwise the temperature will be too high and the lens will overheat and crack (2) There are condensation water drops in the lens barrel, which may cause the lens to break. (3)The lens is stuck or pollute with the jets of the cut or engrave material, Uneven heating for a long time is easy to cause broken. It should be cleaned with cotton ball dipped in absolute alcohol or acetone in time. (4) When adjusting the light path, the light path is not correct, the laser accidentally hit the edge of the lens and the junction of the lens barrel, resulting in broken. Parameters Tips Focal length is the distance between the lens and the workpiece(material being cut or engraved). Before replace or install the lens, please confirm the diameter and focal length firstly. It is recommended to use convex upward, flat or concave facing the engraving or cutting material. Usually one co2 laser engraver needs 1 pcs focus lens and 3 pcs reflective mirrors. Lens shape: 50.8mm/2 " and 63.5mm/2.5" FL are plano convex or meniscus; 127mm/5 " FL is meniscus; other FL (38.1/1.5", 76.2mm/3 ", 101.6mm/4") is plano convex. The above is the default shape. If you have special needs, we can customize it. Please send us message. Application Review: Great replacement part for my laser cutter - Used this to replace the 6 year old lens on my 100W CNC laser which looked a bit cloudy. Cut mostly balsawood, plywood, and magnetic rubber. Could not believe the difference in cut quality with the new lens, I guess I should replace it more often! Review: They work soooo good - I like the size of the pin point you can get from the laser. This is on my k40 Chinese laser and I use it all the time and this was a good choice for me. ## Features - Material: Hight class CVD Znse material (US II-VI) - Diameter: 20mm/0.79"; Focal Length:101.6mm/4";Thickness:2.2-2.3mm;Transmittance: β‰₯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/200W CO2 laser 10600nm 10.6um. - It can be used for CO2 laser engraving and cutting well. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07M7DGX26 | | Best Sellers Rank | #105,939 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #299 in Jewelry Making Engraving Machines & Tools | | Brand | MCWlaser | | Brand Name | MCWlaser | | Customer Reviews | 4.5 out of 5 stars 292 Reviews | | Item Dimensions L x W | 4"L x 0.79"W | | Manufacturer | Shanghai Top Nine Industiral Co.,Ltd | | Manufacturer Part Number | LM1-26-20100 | | Material | ZNSE | | Material Type | ZNSE | | Model Number | LM1-26-20100 | | Operation Mode | Manual | | Product Dimensions | 4"L x 0.79"W | | Style | Laser | | Style Name | Laser | | UPC | 671875157818 671875154664 | ## Product Details - **Brand:** MCWlaser - **Item Weight:** 0.02 Kilograms - **Material:** ZNSE - **Product Dimensions:** 4"L x 0.79"W - **Style:** Laser ## Images ![MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Image 1](https://m.media-amazon.com/images/I/51Pz9AYZWsL.jpg) ![MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Image 2](https://m.media-amazon.com/images/I/61H++Pjp16L.jpg) ![MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Image 3](https://m.media-amazon.com/images/I/61UuAw+ipAL.jpg) ![MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Image 4](https://m.media-amazon.com/images/I/61rzapB9PKL.jpg) ![MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Image 5](https://m.media-amazon.com/images/I/61AqECzF6LL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great replacement part for my laser cutter *by S***L on December 6, 2024* Used this to replace the 6 year old lens on my 100W CNC laser which looked a bit cloudy. Cut mostly balsawood, plywood, and magnetic rubber. Could not believe the difference in cut quality with the new lens, I guess I should replace it more often! ### ⭐⭐⭐⭐⭐ They work soooo good *by S***E on October 16, 2024* I like the size of the pin point you can get from the laser. This is on my k40 Chinese laser and I use it all the time and this was a good choice for me. ### ⭐⭐⭐⭐⭐ Recibi el producto tal cual se describe *by A***A on September 10, 2023* Tiempos dentro de lo estipulado Producto recibido tal cual se describe Gracias!! ## Frequently Bought Together - MCWlaser CVD ZnSe Focus Lens Dia: 20mm FL:4"/ 101.6mm for CO2 Laser Engraver Cutter 40W 50W 60W 80W 100W 130W 150W 180W 200W - Cloudray CO2 Laser Lens 20mm Mirror, ZnSe for CO2 Laser Engraving/Cutting, 40W-200W, Dia 20mm FL101.6mm --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/202326265-mcwlaser-cvd-znse-focus-lens-dia-20mm-fl-4-101](https://www.desertcart.tn/products/202326265-mcwlaser-cvd-znse-focus-lens-dia-20mm-fl-4-101) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-07*