{"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\/products\/gaas-co2-laser-focus-lens-10-6um","provider":"Link Metal CNC ","version":"1.0","type":"link"}