--- product_id: 73126571 title: "- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm" brand: "cloudray" price: "VT8931" currency: VUV in_stock: true reviews_count: 13 category: "Cloudray" url: https://www.desertcart.vu/products/73126571-18mm-co2-laser-lens-pvd-znse-for-co2-laser-engraving store_origin: VU region: Vanuatu --- # 30W-100W power range 18mm diameter, FL 50.8mm ≥99.5% transmittance - 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm **Brand:** cloudray **Price:** VT8931 **Availability:** ✅ In Stock ## Summary > 🎯 Sharpen your craft with precision that commands attention! ## Quick Answers - **What is this?** - 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm by cloudray - **How much does it cost?** VT8931 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/73126571-18mm-co2-laser-lens-pvd-znse-for-co2-laser-engraving) ## 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 - • **Compact & Focused:** 18mm diameter with a 50.8mm focal length delivers pinpoint accuracy for intricate designs. - • **Plug & Play Excellence:** Easy installation with a perfectly engineered meniscus shape lens, designed for seamless integration. - • **Crystal-Clear Precision:** Experience ultra-high 99.5% light transmittance for razor-sharp engraving and cutting results. - • **Power-Ready Performance:** Optimized for 30W to 100W CO2 lasers, ensuring versatile compatibility with your professional setup. - • **Durability Meets Innovation:** Double-sided PVD ZnSe coating offers superior wiping resistance and long-lasting performance. ## Overview The Cloudray 18mm CO2 Laser Lens features a high-quality PVD ZnSe meniscus design with ≥99.5% transmittance, tailored for 30W-100W CO2 laser engraving and cutting machines. Its 18mm diameter and 50.8mm focal length ensure precise, durable, and efficient laser performance, backed by a double-sided solid coating for extended lifespan and wiping resistance. ## Description Product description Technical Parameter CO2 FOCUS LENS focus 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 laser lens 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. 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 PVD Znse,compatible power: 30W-100W - Diameter: 18mm/0.71"; Focal Length: 50.8mm/2"; Thickness: 2.4mm/0.09" - 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 | B07B8X7T7G | | Best Sellers Rank | #25,987 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #42 in Jewelry Making Engraving Machines & Tools | | Brand | Cloudray | | Brand Name | Cloudray | | Color | Dia 18mm(0.71") | | Customer Reviews | 4.6 out of 5 stars 380 Reviews | | Included Components | 1 PCS China PVD Focus Lens & 1 PCS box | | Item Dimensions L x W | 0.71"L x 0.71"W | | Item Type Name | PVD ZnSe | | Item Weight | 20 Grams | | Level Measurement Type | laser | | Level Measurement Units | millimeter | | Manufacturer | Cloudray | | Manufacturer Part Number | China PVD ZnSe Lens | | Material | Metal | | Material Type | Metal | | Model Number | PVD ZnSe D18 F50.8 ET2 (Meniscus) | | Operation Mode | Automatic | | Product Dimensions | 0.71"L x 0.71"W | | Style | PVD ZnSe | | Style Name | PVD ZnSe | | UPC | 669819730395 | | Unit Count | 1 Count | ## Product Details - **Brand:** Cloudray - **Color:** Dia 18mm(0.71") - **Material:** Metal - **Product Dimensions:** 0.71"L x 0.71"W - **Style:** PVD ZnSe ## Images ![- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm - Image 1](https://m.media-amazon.com/images/I/41RhnxV-+lL.jpg) ![- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm - Image 2](https://m.media-amazon.com/images/I/51DJuf8Lv6L.jpg) ![- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm - Image 3](https://m.media-amazon.com/images/I/41cbAwmDQML.jpg) ![- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm - Image 4](https://m.media-amazon.com/images/I/41ys3gpcBOL.jpg) ![- 18mm CO2 Laser Lens, PVD ZnSe for CO2 Laser Engraving & Cutting, 30W-100W, Dia 18mm FL50.8mm - Image 5](https://m.media-amazon.com/images/I/51UKYFV7-KL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Will this fit a Omtech 70 watt that used 18mm with 2" focal?** A: It fits my OMTECH AD2440 100Watt. It should fit yours. Measure the diameter of your current lens. **Q: Is this a meniscus lens?** A: Yes. That is meniscus lens. **Q: What is the actual delivery date?** A: This specification of 18-50.8 is delivered by Amazon. It is available in the Amazon warehouse in the United States. Normally it takes about 3-10 days. **Q: Which side should face work ? Convex or concave ?** A: The convex side of the lens faces upward, and the concave side faces the sculpture, the wavelength is 10.6um ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by R***G on June 3, 2025* ### ⭐⭐⭐⭐⭐ Review *by W***. on March 2, 2025* ### ⭐⭐⭐⭐⭐ Review *by J***R on December 1, 2025* ## Frequently Bought Together - Cloudray CO2 Laser Lens 18mm Laser Mirror CO2 Laser Focal Lens CO2 Focus Lens,PVD ZnSe for CO2 Laser Engraving Cutting Machine,Laser Cutter 30W-100W,Dia 18mm FL50.8mm - Cloudray Laser Si Reflective Lens Gold Plated Mirror 25mm for CO2 Laser Engraving & Cutting, 3PCS - Cloudray Mo Mirror Dia 19.05mm (0.75 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.vu/products/73126571-18mm-co2-laser-lens-pvd-znse-for-co2-laser-engraving](https://www.desertcart.vu/products/73126571-18mm-co2-laser-lens-pvd-znse-for-co2-laser-engraving) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-17*