--- product_id: 67217798 title: "CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm" brand: "cloudray" price: "1831312₫" currency: VND in_stock: true reviews_count: 13 category: "Cloudray" url: https://www.desertcart.vn/products/67217798-co2-laser-lens-20mm-mirror-co2-laser-focal-lens-co2 store_origin: VN region: Vietnam --- # 40W-200W power compatibility ≥99.5% transmittance clarity 20mm precision diameter CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm **Brand:** cloudray **Price:** 1831312₫ **Availability:** ✅ In Stock ## Summary > 💥 Focus Like a Pro, Cut Like a Boss! ## Quick Answers - **What is this?** CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm by cloudray - **How much does it cost?** 1831312₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/67217798-co2-laser-lens-20mm-mirror-co2-laser-focal-lens-co2) ## Best For - cloudray enthusiasts ## Why This Product - Trusted cloudray brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Integration:** Standard 20mm diameter fits perfectly with most CO2 laser engraving and cutting setups. - • **Optimized Focal Length:** 50.8mm focal length delivers razor-sharp engraving and cutting results every time. - • **Crystal-Clear Precision:** High-quality CVD ZnSe material ensures unmatched laser focus and accuracy. - • **Powerhouse Compatibility:** Seamlessly supports 40W to 200W CO2 laser machines for versatile industrial use. - • **Durability Meets Performance:** Double-sided solid coating offers superior wiping resistance and extended lifespan. ## Overview The Cloudray CO2 Laser Lens features a 20mm diameter and 50.8mm focal length crafted from premium CVD ZnSe, delivering over 99.5% transmittance. Compatible with 40W-200W CO2 laser machines, it boasts a durable double-sided solid coating for long-lasting, high-precision laser engraving and cutting performance. ## Description Product description Technical Parameter CO2 LASER LENS How to determing focal length The Focal Length is the distance between the lens and the cutting material. The cutting requirements for different materials vary in terms of focal length. Typically, thinner materials require longer focal lengths, while thicker materials require shorter focal lengths. This is because the position of the focal point affects the focusing depth and diameter of the laser beam. FIBER PATH Cloudray Laser Lens In the CO2 cutting process, the common optical path structure typically includes one focusing lens and two reflecting mirrors. The focusing lens is located after the output coupling mirror and is primarily used to adjust the direction and shape of the laser, making it as symmetrical as possible, and guiding the laser beam to the subsequent reflecting mirrors. Important Consideration Cleaning Instructions 1. Use appropriate cleaning materials: Use gentle cleaning materials such as lens cleaning solution or lens cleaning tissues specifically designed for optical surfaces. 2. Clean in a dust-free environment: Ensure that the cleaning process is carried out in a clean and dust-free environment to prevent particles from getting onto the lens surface during cleaning. 3. Avoid excessive force,Excessive force can cause damage to the lens or misalignment of its optical properties. Cloudray Test Process CO2 Lens Testing Ensuring lens quality: CO2 lenses undergo high energy and high temperature in laser cutting processes, so their quality and durability are crucial. Testing can ensure that the lens materials, manufacturing, and coatings meet the quality requirements. Excellent Performance Determining optical performance: The optical performance of CO2 lenses is highly important for cutting and laser transport efficiency and quality. Testing can be used to evaluate optical performance parameters such as transmittance, reflectance, and scatter to ensure the proper functioning of the lens. Detecting surface conditions: Testing can be used to detect scratches, dirt, or other defects on the lens surface. Centering Tolerance Test In summary, CO2 lens testing can ensure that the lens quality, optical performance, and surface conditions meet the requirements, thus guaranteeing cutting quality and equipment reliability. Compare with similar items CVD Focus Lens PVD Focus Lens II-VI Focus Lens GaAs Focus Lens Si Laser Mirror Mo Laser Mirror ## Features - Material: High Quality CVD Znse,compatible power: 40W-200W - Diameter: 20mm/0.79"; Focal Length:50.8mm/2"; Thickness: 2mm/0.07" - Shape: Meniscus; Transmittance: ≥99.5%;Package includes: 1 x Lens - Superb Coating Process: Double-sided Solid Coating. Wiping Resistance. Long Working Life - Usage: CO2 Laser Lens for CO2 laser engraving, cutting machine ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07B8J9PMV | | Best Sellers Rank | #24,078 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #36 in Jewelry Making Engraving Machines & Tools | | Brand | Cloudray | | Brand Name | Cloudray | | Color | Diameter 20mm(0.79 Inch) | | Customer Reviews | 4.7 out of 5 stars 454 Reviews | | Item Weight | 20 Grams | | Manufacturer | Cloudray | | Manufacturer Part Number | USFL05D20F50 | | Material | ZnSe | | Material Type | ZnSe | | Model Number | CVD ZnSe D20 F50.8 ET2 (Meniscus) | | Operation Mode | Automatic | | Style | High-quality CVD ZnSe (Chemical Vapor Deposition) | | Style Name | High-quality CVD ZnSe (Chemical Vapor Deposition) | | UPC | 661021765134 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Cloudray - **Color:** Diameter 20mm(0.79 Inch) - **Item Weight:** 20 Grams - **Material:** ZnSe - **Style:** High-quality CVD ZnSe (Chemical Vapor Deposition) ## Images ![CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm - Image 1](https://m.media-amazon.com/images/I/41FTrqrQmgL.jpg) ![CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm - Image 2](https://m.media-amazon.com/images/I/51hKZsAkM2L.jpg) ![CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm - Image 3](https://m.media-amazon.com/images/I/51ZLUEIUccL.jpg) ![CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm - Image 4](https://m.media-amazon.com/images/I/41HCHTFu5lL.jpg) ![CO2 Laser Lens 20mm Mirror CO2 Laser Focal Lens CO2 Focus Lens, CVD ZnSe for CO2 Laser Engraving Machine Cutter 40W-200W,Dia 20mm FL50.8mm - Image 5](https://m.media-amazon.com/images/I/518XFHhGTkL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***A on April 3, 2026* ### ⭐⭐⭐⭐⭐ Review *by D***N on January 22, 2026* ### ⭐⭐⭐⭐⭐ Review *by M***R on February 8, 2026* ## Frequently Bought Together - Cloudray CO2 Laser Lens 20mm Laser Mirror CO2 Laser Focal Lens CO2 Focus Lens,CVD ZnSe for CO2 Laser Engraving Cutting Machine,Laser Cutter 40W-200W,Dia 20mm FL50.8mm - Cloudray Laser Si Reflective Lens Gold Plated Mirror 25mm for CO2 Laser Engraving & Cutting, 3PCS - Cloudray Mo Mirror Dia 25mm (0.98 Inch) Thk 3mm (0.12 Inch) for CO2 laser engraving cutting machine Pack of 3PCS --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/67217798-co2-laser-lens-20mm-mirror-co2-laser-focal-lens-co2](https://www.desertcart.vn/products/67217798-co2-laser-lens-20mm-mirror-co2-laser-focal-lens-co2) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-23*