{"title":"CO2 Laser Focus Lens","description":"","products":[{"product_id":"cvd-znse-co2-laser-focus-lens-10-6um","title":"LinkMetal CNC Premium Import Grade CVD ZnSe CO2 Laser Focus Lens","description":"\u003ch2\u003ePremium Import Grade CVD ZnSe CO2 Laser Focus Lens 10.6μm\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eIndustrial grade premium import grade CVD ZnSe focus lens specially designed for 10.6μm CO2 laser equipment.\u003c\/strong\u003e Features high transmittance, low absorption and high damage threshold. Effectively improves laser cutting and engraving efficiency and extends service life. It is an essential core consumable for all CO2 laser machines.\u003c\/p\u003e\n\n\u003cp\u003eThis complete product series includes 20+ standard specifications, fully compatible with all mainstream CO2 laser cutting, engraving and marking machines on the market. All lenses are manufactured with strict optical quality control to ensure reliable performance in demanding industrial environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Advantages of Our CVD ZnSe CO2 Focus Lenses\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImported High-Purity CVD ZnSe Material\u003c\/strong\u003e: Made from premium imported chemical vapor deposition (CVD) zinc selenide. Features extremely low absorption rate and high thermal conductivity, minimizing thermal lens effect and ensuring stable performance under high power operation.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003e\u0026gt;99% High Transmittance\u003c\/strong\u003e: Double-sided anti-reflection coating optimized for 10.6μm wavelength. Provides transmittance greater than 99%, significantly reducing energy loss and improving cutting\/engraving efficiency.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eHigh Laser Damage Threshold\u003c\/strong\u003e: Excellent thermal stability and high laser damage threshold. Can withstand continuous high-power laser operation without thermal deformation or damage.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003ePrecision Optical Polishing\u003c\/strong\u003e: Precision polished to 60\/40 surface quality. No scratches, no bubbles, no inclusions, ensuring perfect laser beam quality and consistent cutting results.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003e20+ Standard Specifications\u003c\/strong\u003e: Complete range of diameters and focal lengths available, covering all mainstream CO2 laser machine models and application requirements.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Standard dimensions ensure perfect fit with all original and compatible CO2 laser cutting heads. Easy to install and replace with no additional debugging required.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Quality Testing\u003c\/strong\u003e: Each lens undergoes strict optical performance testing before delivery, including transmittance test, surface quality inspection and dimensional accuracy verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Equipment \u0026amp; Available Specifications\u003c\/h3\u003e\n\n\u003ch4\u003eCompatible Equipment\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAll Mainstream CO2 Laser Cutting Machines\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Engraving Machines\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Marking Machines\u003c\/li\u003e\n  \u003cli\u003eAll 10.6μm CO2 Laser Processing Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAvailable Focus Lens Specifications\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD12mm FL50.8mm\u003c\/strong\u003e: 12mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD15mm FL38.1mm\u003c\/strong\u003e: 15mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD15mm FL50.8mm\u003c\/strong\u003e: 15mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL50.8mm\u003c\/strong\u003e: 18mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL63.5mm\u003c\/strong\u003e: 18mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL50.8mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL63.5mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL38.1mm\u003c\/strong\u003e: 20mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL50.8mm\u003c\/strong\u003e: 20mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL63.5mm\u003c\/strong\u003e: 20mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL76.2mm\u003c\/strong\u003e: 20mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL101.6mm\u003c\/strong\u003e: 20mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL50.8mm\u003c\/strong\u003e: 25mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL63.5mm\u003c\/strong\u003e: 25mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL76.2mm\u003c\/strong\u003e: 25mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL101.6mm\u003c\/strong\u003e: 25mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD28mm FL50.8mm\u003c\/strong\u003e: 28mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD28mm FL63.5mm\u003c\/strong\u003e: 28mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD28mm FL76.2mm\u003c\/strong\u003e: 28mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD28mm FL127mm\u003c\/strong\u003e: 28mm diameter, 127mm (5\") focal length\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCustom Specifications Available\u003c\/strong\u003e: For custom diameters, focal lengths or special coatings, please \u003ca href=\"https:\/\/www.linkmetalcnc.com\/pages\/contact\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003econtact our sales team\u003c\/a\u003e directly for personalized solutions.\u003c\/p\u003e\n\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f8f9fa;\"\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eLink Metal CNC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGrade\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003ePremium Import Grade\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eProduct Type\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCVD ZnSe CO2 Laser Focus Lens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMaterial\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eImport Grade CVD Zinc Selenide (ZnSe)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWorking Wavelength\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10.6μm (CO2 Laser)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCoating\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eDouble-Sided Anti-Reflection Coating @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eSurface Quality\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e60\/40 (MIL-PRF-13830B)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eTransmittance\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026gt;99% @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWavefront Error\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eλ\/4 @632.8nm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Diameters\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e12mm, 15mm, 18mm, 19.05mm, 20mm, 25mm, 28mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Focal Lengths\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e38.1mm, 50.8mm, 63.5mm, 76.2mm, 101.6mm, 127mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Power\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10W - 5000W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Equipment\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCO2 Laser Cutting, Engraving, Marking Machines\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplication Scenario\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eLaser Cutting, Laser Engraving, Laser Marking\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Selected Link Metal CNC Premium Import Grade CVD ZnSe CO2 Laser Focus Lens\u003c\/li\u003e\n  \u003cli\u003e1 x Hard Protective Storage Case\u003c\/li\u003e\n  \u003cli\u003e1 x Microfiber Cleaning Cloth\u003c\/li\u003e\n  \u003cli\u003e1 x Sealed Dust-proof Protective Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eEach premium CVD ZnSe focus lens from Link Metal CNC undergoes strict optical performance testing before delivery, including transmittance test, surface quality inspection, wavefront error measurement and dimensional accuracy verification.\u003c\/p\u003e\n\n\u003cp\u003eWe maintain strict ISO 9001 quality control standards to ensure stable and reliable optical performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between CVD ZnSe and regular ZnSe?\u003c\/strong\u003e\u003cbr\u003e\nA: CVD (Chemical Vapor Deposition) ZnSe is produced using a high-purity manufacturing process that results in lower absorption, higher thermal conductivity and better optical homogeneity compared to regular ZnSe. This makes CVD ZnSe lenses more durable, more efficient and better suited for high-power CO2 laser applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I choose the correct focal length?\u003c\/strong\u003e\u003cbr\u003e\nA: Shorter focal lengths (38.1mm-50.8mm) provide a smaller spot size and higher power density, ideal for engraving and thin material cutting. Longer focal lengths (63.5mm-127mm) provide a deeper depth of field, better for cutting thicker materials. Always match the focal length to your original lens for best performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the CO2 focus lens?\u003c\/strong\u003e\u003cbr\u003e\nA: Under normal operating conditions, a CVD ZnSe focus lens should last 3-6 months. However, it should be replaced immediately if you notice any film burning, scratches, or if cutting\/engraving quality deteriorates. Poor air filtration and frequent cutting of oily materials will accelerate lens contamination.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I clean the CO2 focus lens correctly?\u003c\/strong\u003e\u003cbr\u003e\nA: Always wear clean gloves when handling optical lenses. Use a blower ball first to remove loose dust. Then fold a lint-free microfiber cloth into a small square, apply a small amount of lens cleaning fluid, and gently wipe the lens surface in a single direction from the center to the edge. Never use regular paper towels or tissues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this lens for fiber laser machines?\u003c\/strong\u003e\u003cbr\u003e\nA: No, this lens is specifically designed for 10.6μm CO2 lasers. It will not work for 1064nm fiber lasers. Using the wrong wavelength lens will result in extremely high absorption, causing the lens to overheat and crack almost immediately.\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 30px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  View our full range of \u003ca href=\"https:\/\/www.linkmetalcnc.com\/collections\/co2-optical-lenses\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003elaser cutting accessories\u003c\/a\u003e including CO2 protective lenses, mirrors, nozzles and more.\n\u003c\/p\u003e","brand":"LinkMetal CNC","offers":[{"title":"D12mmFL50.8mm","offer_id":48134615531742,"sku":"LMCNC-ZNSE-D12-FL50.8","price":10.9,"currency_code":"USD","in_stock":true},{"title":"D15mmFL38.1mm","offer_id":48134615564510,"sku":"LMCNC-ZNSE-D15-FL38.1","price":18.9,"currency_code":"USD","in_stock":true},{"title":"D15mmFL50.8mm","offer_id":48134615597278,"sku":"LMCNC-ZNSE-D15-FL50.8","price":18.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL50.8mm","offer_id":48134615630046,"sku":"LMCNC-ZNSE-D18-FL50.8","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL63.5mm","offer_id":48134615662814,"sku":"LMCNC-ZNSE-D18-FL63.5","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL50.8mm","offer_id":48134615695582,"sku":"LMCNC-ZNSE-D19.05-FL50.8","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL63.5mm","offer_id":48134615728350,"sku":"LMCNC-ZNSE-D19.05-FL63.5","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL38.1mm","offer_id":48134615761118,"sku":"LMCNC-ZNSE-D20-FL38.1","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL50.8mm","offer_id":48134615793886,"sku":"LMCNC-ZNSE-D20-FL50.8","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL63.5mm","offer_id":48134615826654,"sku":"LMCNC-ZNSE-D20-FL63.5","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL76.2mm","offer_id":48134615859422,"sku":"LMCNC-ZNSE-D20-FL76.2","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL101.6mm","offer_id":48134615892190,"sku":"LMCNC-ZNSE-D20-FL101.6","price":20.9,"currency_code":"USD","in_stock":true},{"title":"D25mmFL50.8mm","offer_id":48134615924958,"sku":"LMCNC-ZNSE-D25-FL50.8","price":51.9,"currency_code":"USD","in_stock":true},{"title":"D25mmFL63.5mm","offer_id":48134615957726,"sku":"LMCNC-ZNSE-D25-FL63.5","price":51.9,"currency_code":"USD","in_stock":true},{"title":"D25mmFL76.2mm","offer_id":48134615990494,"sku":"LMCNC-ZNSE-D25-FL76.2","price":51.9,"currency_code":"USD","in_stock":true},{"title":"D25mmFL101.6mm","offer_id":48134616023262,"sku":"LMCNC-ZNSE-D25-FL101.6","price":51.9,"currency_code":"USD","in_stock":true},{"title":"D28mmFL50.8mm","offer_id":48134616056030,"sku":"LMCNC-ZNSE-D28-FL50.8","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D28mmFL63.5mm","offer_id":48134616088798,"sku":"LMCNC-ZNSE-D28-FL63.5","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D28mmFL76.2mm","offer_id":48134616121566,"sku":"LMCNC-ZNSE-D28-FL76.2","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D28mmFL127mm","offer_id":48134616154334,"sku":"LMCNC-ZNSE-D28-FL127","price":75.9,"currency_code":"USD","in_stock":true},{"title":"Other models please contact us","offer_id":48134616187102,"sku":null,"price":10.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-premium-cvd-znse-co2-laser-focus-lens-01.jpg?v=1776736594"},{"product_id":"economical-pvd-znse-co2-laser-focus-lens-10-6um","title":"LinkMetal CNC Economical PVD ZnSe CO2 Laser Focus Lens","description":"\u003ch2\u003eEconomical PVD ZnSe CO2 Laser Focus Lens 10.6μm\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHigh cost-effective domestic PVD ZnSe focus lens specially designed for 10.6μm CO2 laser equipment.\u003c\/strong\u003e Features stable optical performance and reliable quality, making it a perfect replacement for original lenses. Ideal for low to medium power laser operations and daily maintenance, significantly reducing your operating costs.\u003c\/p\u003e\n\n\u003cp\u003eThis complete product series includes 21 standard specifications, fully compatible with all mainstream CO2 laser cutting, engraving and marking machines on the market. All lenses are manufactured with strict quality control to ensure reliable performance for general industrial applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Advantages of Our Economical PVD ZnSe CO2 Focus Lenses\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExcellent Value for Money\u003c\/strong\u003e: Significantly lower cost compared to imported CVD ZnSe lenses, greatly reducing your equipment operating and maintenance costs without compromising basic performance.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Domestic PVD ZnSe Material\u003c\/strong\u003e: Made from premium domestic physical vapor deposition (PVD) zinc selenide. Provides stable and reliable optical performance for most general laser applications.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eGood Transmittance\u003c\/strong\u003e: Features basic anti-reflection coating optimized for 10.6μm wavelength. Delivers good transmittance suitable for all low to medium power CO2 lasers up to 1500W.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003e21 Standard Specifications\u003c\/strong\u003e: Complete range of diameters and focal lengths available, covering all mainstream CO2 laser machine models and application requirements.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003ePrecision Manufacturing\u003c\/strong\u003e: Strict dimensional tolerance control ensures perfect fit with all original and compatible CO2 laser cutting heads. Easy to install and replace with no additional debugging required.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Works with all major CO2 laser machine brands. Standard dimensions allow direct replacement of original lenses.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eReliable Quality Assurance\u003c\/strong\u003e: All lenses undergo strict dimensional inspection and basic optical testing before delivery, ensuring consistent performance and long service life for daily use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Equipment \u0026amp; Available Specifications\u003c\/h3\u003e\n\n\u003ch4\u003eCompatible Equipment\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAll Mainstream CO2 Laser Cutting Machines (10W-1500W)\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Engraving Machines\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Marking Machines\u003c\/li\u003e\n  \u003cli\u003eAll 10.6μm CO2 Laser Processing Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAvailable Focus Lens Specifications\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD12mm FL25.4mm\u003c\/strong\u003e: 12mm diameter, 25.4mm (1\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD12mm FL50.8mm\u003c\/strong\u003e: 12mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD15mm FL38.1mm\u003c\/strong\u003e: 15mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD15mm FL50.8mm\u003c\/strong\u003e: 15mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL38.1mm\u003c\/strong\u003e: 18mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL50.8mm\u003c\/strong\u003e: 18mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL63.5mm\u003c\/strong\u003e: 18mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL76.2mm\u003c\/strong\u003e: 18mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL101.6mm\u003c\/strong\u003e: 18mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL38.1mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL50.8mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL63.5mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL76.2mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL101.6mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL38.1mm\u003c\/strong\u003e: 20mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL50.8mm\u003c\/strong\u003e: 20mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL63.5mm\u003c\/strong\u003e: 20mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL76.2mm\u003c\/strong\u003e: 20mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL101.6mm\u003c\/strong\u003e: 20mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL127mm\u003c\/strong\u003e: 20mm diameter, 127mm (5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustom Specifications\u003c\/strong\u003e: Contact us for custom diameters and focal lengths\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCustom Specifications Available\u003c\/strong\u003e: For custom diameters, focal lengths or special requirements, please \u003ca href=\"https:\/\/www.linkmetalcnc.com\/pages\/contact\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003econtact our sales team\u003c\/a\u003e directly for personalized solutions.\u003c\/p\u003e\n\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f8f9fa;\"\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eLink Metal CNC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGrade\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eEconomical Domestic PVD Grade\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eProduct Type\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003ePVD ZnSe CO2 Laser Focus Lens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMaterial\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eDomestic PVD Zinc Selenide (ZnSe)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWorking Wavelength\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10.6μm (CO2 Laser)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCoating\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBasic Anti-Reflection Coating @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eTransmittance\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e≥98% @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Diameters\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e12mm, 15mm, 18mm, 19.05mm, 20mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Focal Lengths\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e25.4mm, 38.1mm, 50.8mm, 63.5mm, 76.2mm, 101.6mm, 127mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Power\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10W - 1500W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Equipment\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCO2 Laser Cutting, Engraving, Marking Machines\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplication Scenario\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGeneral Laser Cutting, Laser Engraving, Daily Maintenance\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Selected Link Metal CNC Economical PVD ZnSe CO2 Laser Focus Lens\u003c\/li\u003e\n  \u003cli\u003e1 x Protective Storage Case\u003c\/li\u003e\n  \u003cli\u003e1 x Microfiber Cleaning Cloth\u003c\/li\u003e\n  \u003cli\u003e1 x Sealed Dust-proof Protective Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eAll economical PVD ZnSe focus lenses from Link Metal CNC undergo strict dimensional inspection and basic optical testing before delivery. We ensure each lens provides stable performance and excellent value for money for general industrial applications.\u003c\/p\u003e\n\n\u003cp\u003eWe maintain strict ISO 9001 quality control standards to ensure consistent and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between PVD ZnSe and CVD ZnSe lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: PVD (Physical Vapor Deposition) ZnSe is a domestic manufacturing process that produces lenses at a significantly lower cost. CVD (Chemical Vapor Deposition) ZnSe is an imported high-grade material with lower absorption, higher thermal conductivity and better performance for high-power applications. PVD lenses are ideal for low to medium power lasers and daily maintenance, while CVD lenses are recommended for high-power and demanding industrial applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: When should I choose economical PVD lenses over premium CVD lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: Choose PVD lenses if you have a low to medium power laser (≤1500W), perform general cutting and engraving tasks, or are looking to reduce your daily maintenance costs. Choose CVD lenses if you have a high-power laser (\u0026gt;1500W), require maximum cutting efficiency, or operate in demanding industrial environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are PVD lenses a direct replacement for original lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, our PVD ZnSe lenses are manufactured to the same dimensional specifications as original lenses. They are a direct drop-in replacement and require no additional debugging or modification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the PVD focus lens?\u003c\/strong\u003e\u003cbr\u003e\nA: Under normal operating conditions, a PVD ZnSe focus lens should last 2-4 months. However, it should be replaced immediately if you notice any film burning, scratches, or if cutting\/engraving quality deteriorates.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use PVD lenses for high-power laser applications?\u003c\/strong\u003e\u003cbr\u003e\nA: No, PVD ZnSe lenses are designed for low to medium power lasers up to 1500W. Using them in higher power applications will result in increased absorption, overheating and premature lens failure. For high-power applications, we recommend our premium import grade CVD ZnSe lenses.\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 30px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  Also available: \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/cvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003ePremium Import Grade CVD ZnSe CO2 Laser Focus Lenses\u003c\/a\u003e for high-power applications.\n\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 15px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  View our full range of \u003ca href=\"https:\/\/www.linkmetalcnc.com\/collections\/co2-optical-lenses\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003elaser cutting accessories\u003c\/a\u003e including CO2 protective lenses, mirrors, nozzles and more.\n\u003c\/p\u003e","brand":"LinkMetal CNC","offers":[{"title":"D12mmFL25.4mm","offer_id":48134727663838,"sku":"LMCNC-ZNSE-PVD-D12-FL25.4","price":8.9,"currency_code":"USD","in_stock":true},{"title":"D12mmFL50.8mm","offer_id":48134727696606,"sku":"LMCNC-ZNSE-PVD-D12-FL50.8","price":8.9,"currency_code":"USD","in_stock":true},{"title":"D15mmFL38.1mm","offer_id":48134727729374,"sku":"LMCNC-ZNSE-PVD-D15-FL38.1","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D15mmFL50.8mm","offer_id":48134727762142,"sku":"LMCNC-ZNSE-PVD-D15-FL50.8","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL38.1mm","offer_id":48134727794910,"sku":"LMCNC-ZNSE-PVD-D18-FL38.1","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL50.8mm","offer_id":48134727827678,"sku":"LMCNC-ZNSE-PVD-D18-FL50.8","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL63.5mm","offer_id":48134727860446,"sku":"LMCNC-ZNSE-PVD-D18-FL63.5","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL76.2mm","offer_id":48134727893214,"sku":"LMCNC-ZNSE-PVD-D18-FL76.2","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D18mmFL101.6mm","offer_id":48134727925982,"sku":"LMCNC-ZNSE-PVD-D18-FL101.6","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL38.1mm","offer_id":48134727958750,"sku":"LMCNC-ZNSE-PVD-D19.05-FL38.1","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL50.8mm","offer_id":48134727991518,"sku":"LMCNC-ZNSE-PVD-D19.05-FL50.8","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL63.5mm","offer_id":48134728024286,"sku":"LMCNC-ZNSE-PVD-D19.05-FL63.5","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL76.2mm","offer_id":48134728057054,"sku":"LMCNC-ZNSE-PVD-D19.05-FL76.2","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mmFL101.6mm","offer_id":48134728089822,"sku":"LMCNC-ZNSE-PVD-D19.05-FL101.6","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL38.1mm","offer_id":48134728122590,"sku":"LMCNC-ZNSE-PVD-D20-FL38.1","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL50.8mm","offer_id":48134728155358,"sku":"LMCNC-ZNSE-PVD-D20-FL50.8","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL63.5mm","offer_id":48134728188126,"sku":"LMCNC-ZNSE-PVD-D20-FL63.5","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL76.2mm","offer_id":48134728220894,"sku":"LMCNC-ZNSE-PVD-D20-FL76.2","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL101.6mm","offer_id":48134728253662,"sku":"LMCNC-ZNSE-PVD-D20-FL101.6","price":12.9,"currency_code":"USD","in_stock":true},{"title":"D20mmFL127mm","offer_id":48134728286430,"sku":"LMCNC-ZNSE-PVD-D20-FL127","price":15.9,"currency_code":"USD","in_stock":true},{"title":"Other models please contact us","offer_id":48134728319198,"sku":null,"price":15.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-domestic-pvd-znse-co2-laser-focus-lens-01.jpg?v=1776742932"},{"product_id":"genuine-ii-vi-cvd-znse-co2-laser-focus-lens-10-6um","title":"LinkMetal CNC II-VI CVD ZnSe CO2 Laser Focus Lens","description":"\u003ch2\u003eGenuine II-VI CVD ZnSe CO2 Laser Focus Lens 10.6μm\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003e100% genuine II-VI original CVD ZnSe focus lens specially designed for 10.6μm CO2 laser equipment.\u003c\/strong\u003e Original factory quality with unmatched optical performance, high transmittance, high damage threshold and excellent thermal stability. Ideal for high power laser cutting and engraving operations where maximum reliability and efficiency are required.\u003c\/p\u003e\n\n\u003cp\u003eEach lens comes with II-VI original hard protective case, certificate of authenticity and factory laser marking for anti-counterfeiting verification. All products undergo strict II-VI factory quality testing to ensure the highest level of performance and reliability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Advantages of Our Genuine II-VI CO2 Focus Lenses\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Genuine II-VI Original Product\u003c\/strong\u003e: Guaranteed authentic with factory laser marking on the lens edge and complete anti-counterfeiting identification. Each lens includes an original II-VI certificate of authenticity.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003ePremium II-VI CVD ZnSe Material\u003c\/strong\u003e: Made from genuine II-VI chemical vapor deposition zinc selenide. Features ultra-low absorption rate (\u0026lt;0.0005 cm⁻¹ @10.6μm) and excellent thermal conductivity, virtually eliminating thermal lens effect even under continuous high power operation.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eII-VI Proprietary Anti-Reflection Coating\u003c\/strong\u003e: Features II-VI's proprietary double-sided anti-reflection coating optimized for 10.6μm wavelength. Provides transmittance greater than 99.5%, minimizing energy loss and maximizing cutting efficiency.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eIndustry-Leading Damage Threshold\u003c\/strong\u003e: Exceptional laser damage threshold of \u0026gt;15 kW\/cm² @10.6μm (CW). Stable performance under continuous high power operation up to 5000W.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003ePrecision Optical Manufacturing\u003c\/strong\u003e: Precision polished to 40\/20 surface quality (MIL-PRF-13830B), significantly better than standard 60\/40 lenses. No scratches, no bubbles, no inclusions, ensuring perfect laser beam quality.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003e14 Standard Specifications\u003c\/strong\u003e: Complete range of diameters and focal lengths available, covering all mainstream high power CO2 laser machine models and application requirements.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Factory Testing\u003c\/strong\u003e: Each lens undergoes rigorous II-VI factory testing including transmittance test, surface quality inspection, wavefront error measurement and dimensional accuracy verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Equipment \u0026amp; Available Specifications\u003c\/h3\u003e\n\n\u003ch4\u003eCompatible Equipment\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAll Mainstream High Power CO2 Laser Cutting Machines (1000W-5000W)\u003c\/li\u003e\n  \u003cli\u003eIndustrial Grade CO2 Laser Engraving Machines\u003c\/li\u003e\n  \u003cli\u003ePrecision CO2 Laser Marking Machines\u003c\/li\u003e\n  \u003cli\u003eAll 10.6μm CO2 Laser Processing Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAvailable Focus Lens Specifications\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL38.1mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL50.8mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL63.5mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL76.2mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL38.1mm\u003c\/strong\u003e: 20mm diameter, 38.1mm (1.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL50.8mm\u003c\/strong\u003e: 20mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL63.5mm\u003c\/strong\u003e: 20mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL76.2mm\u003c\/strong\u003e: 20mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL101.6mm\u003c\/strong\u003e: 20mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL50.8mm\u003c\/strong\u003e: 25mm diameter, 50.8mm (2\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL63.5mm\u003c\/strong\u003e: 25mm diameter, 63.5mm (2.5\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL76.2mm\u003c\/strong\u003e: 25mm diameter, 76.2mm (3\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL101.6mm\u003c\/strong\u003e: 25mm diameter, 101.6mm (4\") focal length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL127mm\u003c\/strong\u003e: 25mm diameter, 127mm (5\") focal length\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCustom Specifications Available\u003c\/strong\u003e: For custom diameters, focal lengths or special coatings, please \u003ca href=\"https:\/\/www.linkmetalcnc.com\/pages\/contact\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003econtact our sales team\u003c\/a\u003e directly for personalized solutions and volume discounts.\u003c\/p\u003e\n\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f8f9fa;\"\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eII-VI Infrared \/ Link Metal CNC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGrade\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eOriginal Factory Premium Grade\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eProduct Type\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eII-VI CVD ZnSe CO2 Laser Focus Lens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMaterial\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGenuine II-VI CVD Zinc Selenide (ZnSe)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWorking Wavelength\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10.6μm (CO2 Laser)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCoating\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eII-VI Proprietary Double-Sided Anti-Reflection Coating\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eSurface Quality\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e40\/20 (MIL-PRF-13830B)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eTransmittance\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026gt;99.5% @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAbsorption Coefficient\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026lt;0.0005 cm⁻¹ @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWavefront Error\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026lt;λ\/2 @632.8nm per 1\" diameter\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eFocal Length Tolerance\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e±2%\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCentration\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026lt;3 arc minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eLaser Damage Threshold\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e\u0026gt;15 kW\/cm² @10.6μm (CW)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Diameters\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e19.05mm, 20mm, 25mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Focal Lengths\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e38.1mm, 50.8mm, 63.5mm, 76.2mm, 101.6mm, 127mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Power\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e100W - 5000W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Equipment\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eHigh Power CO2 Laser Cutting, Engraving Machines\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplication Scenario\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eHigh Precision Cutting, Industrial Engraving, 24\/7 Production\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Genuine II-VI CVD ZnSe CO2 Laser Focus Lens (selected size)\u003c\/li\u003e\n  \u003cli\u003e1 x II-VI Original Hard Protective Case\u003c\/li\u003e\n  \u003cli\u003e1 x II-VI Original Certificate of Authenticity\u003c\/li\u003e\n  \u003cli\u003e1 x Microfiber Cleaning Cloth\u003c\/li\u003e\n  \u003cli\u003e1 x Sealed Dust-proof Protective Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eAll II-VI focus lenses are 100% original factory products with complete anti-counterfeiting identification. Each lens undergoes strict II-VI factory quality testing including transmittance test, surface quality inspection, wavefront error measurement and dimensional accuracy verification.\u003c\/p\u003e\n\n\u003cp\u003eWe guarantee that every lens we sell is authentic and meets II-VI's highest quality standards. All our products come with professional pre-sales consultation and comprehensive after-sales support.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How can I verify that the lens is a genuine II-VI product?\u003c\/strong\u003e\u003cbr\u003e\nA: All genuine II-VI lenses have three anti-counterfeiting features: 1) Laser marking of the II-VI logo and part number on the lens edge; 2) Original II-VI hard plastic case with printed label; 3) Original II-VI certificate of authenticity with unique serial number. You can also contact II-VI directly to verify the serial number.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between II-VI lenses and other CVD ZnSe lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: II-VI is the world's leading manufacturer of ZnSe optical materials. Their proprietary CVD process produces material with significantly lower absorption, higher thermal conductivity and better optical homogeneity than other CVD ZnSe. II-VI's proprietary AR coating also provides higher transmittance and better durability than standard coatings. These differences result in 10-15% higher cutting efficiency and 2-3 times longer service life under high power operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: When should I choose II-VI lenses over other grades?\u003c\/strong\u003e\u003cbr\u003e\nA: Choose II-VI original lenses if you have a high power laser (\u0026gt;1500W), require maximum cutting efficiency and quality, operate 24\/7 in production environments, or want the longest possible service life. For low to medium power applications or budget-conscious operations, we also offer economical PVD and standard import grade CVD lenses.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How long does an II-VI focus lens last?\u003c\/strong\u003e\u003cbr\u003e\nA: Under normal operating conditions with proper maintenance, an II-VI focus lens should last 6-12 months. This is 2-3 times longer than standard CVD lenses. Service life can be extended by using proper air filtration, regular cleaning and avoiding cutting oily or reflective materials.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use II-VI lenses in any CO2 laser machine?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, II-VI lenses are manufactured to standard dimensions and are compatible with all mainstream CO2 laser machine brands. They are a direct drop-in replacement for original lenses and require no additional debugging or modification.\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 30px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  Also available: \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/cvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003eStandard Import Grade CVD ZnSe Lenses\u003c\/a\u003e and \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/economical-pvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003eEconomical PVD ZnSe Lenses\u003c\/a\u003e for different budget and power requirements.\n\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 15px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  View our full range of \u003ca href=\"https:\/\/www.linkmetalcnc.com\/collections\/co2-optical-lenses\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003elaser cutting accessories\u003c\/a\u003e including CO2 protective lenses, mirrors, nozzles and more.\n\u003c\/p\u003e","brand":"LinkMetal CNC","offers":[{"title":"D19.05mm FL38.1mm","offer_id":48134798835934,"sku":"LMCNC-ZNSE-IIVI-D19.05-FL38.1","price":25.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mm FL50.8mm","offer_id":48134798868702,"sku":"LMCNC-ZNSE-IIVI-D19.05-FL50.8","price":25.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mm FL63.5mm","offer_id":48134798901470,"sku":"LMCNC-ZNSE-IIVI-D19.05-FL63.5","price":25.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mm FL76.2mm","offer_id":48134798934238,"sku":"LMCNC-ZNSE-IIVI-D19.05-FL76.2","price":25.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL38.1mm","offer_id":48134798967006,"sku":"LMCNC-ZNSE-IIVI-D20-FL38.1","price":29.0,"currency_code":"USD","in_stock":true},{"title":"D20mm FL50.8mm","offer_id":48134798999774,"sku":"LMCNC-ZNSE-IIVI-D20-FL50.8","price":29.0,"currency_code":"USD","in_stock":true},{"title":"D20mm FL63.5mm","offer_id":48134799032542,"sku":"LMCNC-ZNSE-IIVI-D20-FL63.5","price":29.0,"currency_code":"USD","in_stock":true},{"title":"D20mm FL76.2mm","offer_id":48134799065310,"sku":"LMCNC-ZNSE-IIVI-D20-FL76.2","price":29.0,"currency_code":"USD","in_stock":true},{"title":"D20mm FL101.6mm","offer_id":48134799098078,"sku":"LMCNC-ZNSE-IIVI-D20-FL101.6","price":29.0,"currency_code":"USD","in_stock":true},{"title":"D25mm FL50.8mm","offer_id":48134799130846,"sku":"LMCNC-ZNSE-IIVI-D25-FL50.8","price":87.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL63.5mm","offer_id":48134799163614,"sku":"LMCNC-ZNSE-IIVI-D25-FL63.5","price":87.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL76.2mm","offer_id":48134799196382,"sku":"LMCNC-ZNSE-IIVI-D25-FL76.2","price":87.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL101.6mm","offer_id":48134799229150,"sku":"LMCNC-ZNSE-IIVI-D25-FL101.6","price":87.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL127mm","offer_id":48134799261918,"sku":"LMCNC-ZNSE-IIVI-D25-FL127","price":87.9,"currency_code":"USD","in_stock":true},{"title":"Other models please contact us","offer_id":48134799294686,"sku":null,"price":87.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-ii-vi-cvd-znse-co2-laser-focus-lens-10_9799ed05-3023-4ab7-ac7c-3a6d7d343dec.jpg?v=1776756750"},{"product_id":"gaas-co2-laser-focus-lens-10-6um","title":"LinkMetal CNC High Hardness GaAs CO2 Laser Focus Lens","description":"\u003ch2\u003eGaAs CO2 Laser Focus Lens 10.6μm | Gallium Arsenide\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHigh quality GaAs (Gallium Arsenide) focus lens specially designed for 10.6μm CO2 laser equipment.\u003c\/strong\u003e Features high hardness, excellent scratch resistance and good thermal stability. It is a cost-effective alternative to ZnSe lenses, ideal for daily laser cutting and engraving operations where durability and value are priorities.\u003c\/p\u003e\n\n\u003cp\u003eThis complete product series includes 15 standard specifications, fully compatible with all mainstream CO2 laser cutting, engraving and marking machines. All lenses are manufactured with strict quality control to ensure reliable performance for general industrial applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Advantages of Our GaAs CO2 Focus Lenses\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3x Harder Than ZnSe\u003c\/strong\u003e: Made from premium gallium arsenide material with Mohs hardness 4.5, 3 times harder than ZnSe (Mohs hardness 2.5). Provides excellent scratch resistance and durability, significantly extending service life in dusty environments.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eGood Optical Performance\u003c\/strong\u003e: Features anti-reflection coating optimized for 10.6μm wavelength. Delivers stable transmittance and consistent optical performance for most general laser applications.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eHigh Temperature Resistance\u003c\/strong\u003e: Excellent thermal stability and high temperature resistance. Not easy to deform under continuous operation, making it ideal for long production runs.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eExceptional Value for Money\u003c\/strong\u003e: Significantly lower price than ZnSe lenses, greatly reducing your equipment operating and maintenance costs without compromising basic performance.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003e15 Standard Specifications\u003c\/strong\u003e: Complete range of diameters and focal lengths available, covering all mainstream CO2 laser machine models and application requirements.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Standard dimensions ensure perfect fit with all original and compatible CO2 laser cutting heads. Easy to install and replace with no additional debugging required.\u003c\/li\u003e\n  \n  \u003cli\u003e\n\u003cstrong\u003eReliable Quality Assurance\u003c\/strong\u003e: All lenses undergo strict dimensional inspection and optical performance testing before delivery, ensuring consistent performance and long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Equipment \u0026amp; Available Specifications\u003c\/h3\u003e\n\n\u003ch4\u003eCompatible Equipment\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAll Mainstream CO2 Laser Cutting Machines (10W-1000W)\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Engraving Machines\u003c\/li\u003e\n  \u003cli\u003eAll CO2 Laser Marking Machines\u003c\/li\u003e\n  \u003cli\u003eAll 10.6μm CO2 Laser Processing Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAvailable Focus Lens Specifications\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD12mm FL50.8mm (Ge)\u003c\/strong\u003e: 12mm diameter, 50.8mm (2\") focal length, Germanium material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL50.8mm\u003c\/strong\u003e: 18mm diameter, 50.8mm (2\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL63.5mm\u003c\/strong\u003e: 18mm diameter, 63.5mm (2.5\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD18mm FL76.2mm\u003c\/strong\u003e: 18mm diameter, 76.2mm (3\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL50.8mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 50.8mm (2\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD19.05mm FL63.5mm\u003c\/strong\u003e: 19.05mm (3\/4\") diameter, 63.5mm (2.5\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL38.1mm\u003c\/strong\u003e: 20mm diameter, 38.1mm (1.5\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL50.8mm\u003c\/strong\u003e: 20mm diameter, 50.8mm (2\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL63.5mm\u003c\/strong\u003e: 20mm diameter, 63.5mm (2.5\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL76.2mm\u003c\/strong\u003e: 20mm diameter, 76.2mm (3\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD20mm FL101.6mm\u003c\/strong\u003e: 20mm diameter, 101.6mm (4\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL50.8mm\u003c\/strong\u003e: 25mm diameter, 50.8mm (2\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL63.5mm\u003c\/strong\u003e: 25mm diameter, 63.5mm (2.5\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL76.2mm\u003c\/strong\u003e: 25mm diameter, 76.2mm (3\") focal length, GaAs material\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eD25mm FL101.6mm\u003c\/strong\u003e: 25mm diameter, 101.6mm (4\") focal length, GaAs material\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCustom Specifications Available\u003c\/strong\u003e: For custom diameters, focal lengths or special requirements, please \u003ca href=\"https:\/\/www.linkmetalcnc.com\/pages\/contact\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003econtact our sales team\u003c\/a\u003e directly for personalized solutions.\u003c\/p\u003e\n\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\n\u003ctable style=\"width:100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f8f9fa;\"\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eGaAs (Gallium Arsenide)\u003c\/th\u003e\n      \u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eGe (Germanium)\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003eLink Metal CNC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eProduct Type\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003eCO2 Laser Focus Lens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMaterial\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGallium Arsenide (GaAs)\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eGermanium (Ge)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eWorking Wavelength\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003e10.6μm (CO2 Laser)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCoating\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003eDouble-Sided Anti-Reflection Coating @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eSurface Quality\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003e60\/40 (MIL-PRF-13830B)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eTransmittance\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e≥98% @10.6μm\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e≥96% @10.6μm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMohs Hardness\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e4.5\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e6.0\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Diameters\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e18mm, 19.05mm, 20mm, 25mm\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e12mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Focal Lengths\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e38.1mm, 50.8mm, 63.5mm, 76.2mm, 101.6mm\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e50.8mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Power\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10W - 1000W\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e10W - 500W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplicable Equipment\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003eCO2 Laser Cutting, Engraving, Marking Machines\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplication Scenario\u003c\/td\u003e\n      \u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\" colspan=\"2\"\u003eGeneral Laser Cutting, Laser Engraving, Daily Maintenance\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Selected Link Metal CNC GaAs\/Ge CO2 Laser Focus Lens\u003c\/li\u003e\n  \u003cli\u003e1 x Hard Protective Storage Case\u003c\/li\u003e\n  \u003cli\u003e1 x Microfiber Cleaning Cloth\u003c\/li\u003e\n  \u003cli\u003e1 x Sealed Dust-proof Protective Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eAll GaAs and Ge focus lenses from Link Metal CNC undergo strict dimensional inspection and optical performance testing before delivery. We ensure each lens provides stable performance and excellent value for money for general industrial applications.\u003c\/p\u003e\n\n\u003cp\u003eWe maintain strict ISO 9001 quality control standards to ensure consistent and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between GaAs and ZnSe lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: GaAs (Gallium Arsenide) is 3 times harder than ZnSe, making it much more scratch resistant and durable in dusty environments. GaAs lenses are also significantly cheaper than ZnSe lenses. However, ZnSe has higher transmittance (\u0026gt;99% vs \u0026gt;98% for GaAs) and better thermal conductivity, making it more suitable for high power applications (\u0026gt;1000W).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: When should I choose GaAs lenses over ZnSe lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: Choose GaAs lenses if you have a low to medium power laser (≤1000W), perform general cutting and engraving tasks, operate in dusty environments, or are looking to significantly reduce your maintenance costs. Choose ZnSe lenses if you have a high-power laser (\u0026gt;1000W) or require maximum cutting efficiency.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between GaAs and Ge lenses?\u003c\/strong\u003e\u003cbr\u003e\nA: Ge (Germanium) is even harder than GaAs (Mohs 6.0 vs 4.5) but has lower transmittance (≥96% vs ≥98%). Ge lenses are only available in small sizes and are suitable for very low power applications (\u0026lt;500W) where extreme scratch resistance is required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How long does a GaAs focus lens last?\u003c\/strong\u003e\u003cbr\u003e\nA: Under normal operating conditions, a GaAs focus lens should last 3-5 months. This is longer than PVD ZnSe lenses due to its superior scratch resistance. Service life can be extended by using proper air filtration and regular cleaning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use GaAs lenses in any CO2 laser machine?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, GaAs lenses are manufactured to standard dimensions and are compatible with all mainstream CO2 laser machine brands. They are a direct drop-in replacement for original ZnSe lenses and require no additional debugging or modification.\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 30px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  Also available: \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/economical-pvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003eEconomical PVD ZnSe Lenses\u003c\/a\u003e, \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/cvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003eStandard CVD ZnSe Lenses\u003c\/a\u003e and \u003ca href=\"https:\/\/www.linkmetalcnc.com\/products\/genuine-ii-vi-cvd-znse-co2-laser-focus-lens-10-6um\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003eGenuine II-VI Lenses\u003c\/a\u003e for different power and budget requirements.\n\u003c\/p\u003e\n\n\u003cp style=\"margin-top: 15px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003e\n  View our full range of \u003ca href=\"https:\/\/www.linkmetalcnc.com\/collections\/co2-optical-lenses\" style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\"\u003elaser cutting accessories\u003c\/a\u003e including CO2 protective lenses, mirrors, nozzles and more.\n\u003c\/p\u003e","brand":"LinkMetal CNC","offers":[{"title":"D12mm FL50.8mm （Germanium  For Engraving Machine )","offer_id":48134863782110,"sku":"LMCNC-GAAS-D12-FL50.8-GE","price":13.9,"currency_code":"USD","in_stock":true},{"title":"D18mm FL50.8mm","offer_id":48134863814878,"sku":"LMCNC-GAAS-D18-FL50.8","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D18mm FL63.5mm","offer_id":48134863847646,"sku":"LMCNC-GAAS-D18-FL63.5","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D18mm FL76.2mm","offer_id":48134863880414,"sku":"LMCNC-GAAS-D18-FL76.2","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mm FL50.8mm","offer_id":48134863913182,"sku":"LMCNC-GAAS-D19.05-FL50.8","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D19.05mm FL63.5mm","offer_id":48134863945950,"sku":"LMCNC-GAAS-D19.05-FL63.5","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL38.1mm","offer_id":48134863978718,"sku":"LMCNC-GAAS-D20-FL38.1","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL50.8mm","offer_id":48134864011486,"sku":"LMCNC-GAAS-D20-FL50.8","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL63.5mm","offer_id":48134864044254,"sku":"LMCNC-GAAS-D20-FL63.5","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL76.2mm","offer_id":48134864077022,"sku":"LMCNC-GAAS-D20-FL76.2","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D20mm FL101.6mm","offer_id":48134864109790,"sku":"LMCNC-GAAS-D20-FL101.6","price":29.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL50.8mm","offer_id":48134864142558,"sku":"LMCNC-GAAS-D25-FL50.8","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL63.5mm","offer_id":48134864175326,"sku":"LMCNC-GAAS-D25-FL63.5","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL76.2mm","offer_id":48134864208094,"sku":"LMCNC-GAAS-D25-FL76.2","price":75.9,"currency_code":"USD","in_stock":true},{"title":"D25mm FL101.6mm","offer_id":48134864240862,"sku":"LMCNC-GAAS-D25-FL101.6","price":75.9,"currency_code":"USD","in_stock":true},{"title":"Other models please contact us","offer_id":48134867419358,"sku":null,"price":13.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-gaas-co2-laser-focus-lens-06.jpg?v=1776751634"}],"url":"https:\/\/www.linkmetalcnc.com\/collections\/co2-laser-focus-lens.oembed","provider":"Link Metal CNC ","version":"1.0","type":"link"}