{"product_id":"18mm-znse-focus-lens-for-c02-laser-10-6um","title":"18mm ZnSe Focus Lens for CO₂ Laser – 10.6µm – Direct Replacement for 18mm Lenses","description":"\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-cvejd-79elbk h-full dark:bg-gray-800\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-cvejd-1n7m0yu\"\u003e\n\u003cdiv class=\"flex flex-col text-sm dark:bg-gray-800\"\u003e\n\u003cdiv data-testid=\"conversation-turn-107\" class=\"group w-full text-token-text-primary border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\"\u003e\n\u003cdiv class=\"p-4 justify-center text-base md:gap-6 md:py-6 m-auto\"\u003e\n\u003cdiv class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl }\"\u003e\n\u003cdiv class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col gap-3 max-w-full\"\u003e\n\u003cdiv class=\"min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003ch4 data-section-id=\"iljj2g\" data-start=\"0\" data-end=\"87\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3\" data-end=\"87\"\u003e18mm ZnSe Focus Lens for CO₂ Laser – 10.6µm – Direct Replacement for 18mm Lenses\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-start=\"89\" data-end=\"459\"\u003eUpgrade your CO₂ laser system with our enhanced \u003cstrong data-start=\"137\" data-end=\"161\"\u003e18mm ZnSe Focus Lens\u003c\/strong\u003e, engineered for superior engraving and cutting performance. Designed as a direct replacement for standard \u003cstrong data-start=\"268\" data-end=\"293\"\u003e18mm CO₂ laser lenses\u003c\/strong\u003e, this premium optic delivers improved thermal performance, exceptional durability, and outstanding beam precision for both professional and hobby laser applications.\u003c\/p\u003e\n\u003cp data-start=\"461\" data-end=\"712\"\u003eManufactured from high-quality laser-grade Zinc Selenide (ZnSe) and proudly made in the USA, this lens is optimized for \u003cstrong data-start=\"581\" data-end=\"609\"\u003e10.6µm CO₂ laser systems\u003c\/strong\u003e and designed to provide cleaner cuts, sharper engraving detail, and more consistent laser performance.\u003c\/p\u003e\n\u003chr data-start=\"714\" data-end=\"717\"\u003e\n\u003ch4 data-section-id=\"1pi78xj\" data-start=\"719\" data-end=\"749\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"722\" data-end=\"749\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003ch5 data-section-id=\"j2sdng\" data-start=\"751\" data-end=\"788\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"755\" data-end=\"788\"\u003eEnhanced Thermal Conductivity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"789\" data-end=\"929\"\u003eImproved heat dissipation reduces lens overheating during extended operation, helping maintain consistent beam quality and longer lens life.\u003c\/p\u003e\n\u003ch5 data-section-id=\"yx1a08\" data-start=\"931\" data-end=\"961\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"935\" data-end=\"961\"\u003eDurable Aluminum Mount\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"962\" data-end=\"1073\"\u003eA rugged aluminum housing protects the lens while making installation, handling, and cleaning easier and safer.\u003c\/p\u003e\n\u003ch5 data-section-id=\"1b0n8vi\" data-start=\"1075\" data-end=\"1107\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1079\" data-end=\"1107\"\u003ePremium Laser-Grade ZnSe\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"1108\" data-end=\"1257\"\u003eManufactured from top-tier ZnSe material with a power rating suitable for lasers up to \u003cstrong data-start=\"1195\" data-end=\"1203\"\u003e200W\u003c\/strong\u003e, delivering excellent optical clarity and durability.\u003c\/p\u003e\n\u003ch5 data-section-id=\"4mbfa7\" data-start=\"1259\" data-end=\"1288\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1263\" data-end=\"1288\"\u003eLaser-Etched Markings\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"1289\" data-end=\"1402\"\u003eClearly engraved beam direction and focal length indicators simplify installation and improve alignment accuracy.\u003c\/p\u003e\n\u003ch5 data-section-id=\"7wavkm\" data-start=\"1404\" data-end=\"1437\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1408\" data-end=\"1437\"\u003eStress-Free Lens Mounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"1438\" data-end=\"1605\"\u003eThe lens is specially suspended using a stress-free adhesive mounting process to minimize crystal stress, reduce beam distortion, and eliminate the need for an O-ring.\u003c\/p\u003e\n\u003ch5 data-section-id=\"1j9jr2z\" data-start=\"1607\" data-end=\"1647\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1611\" data-end=\"1647\"\u003eDirect Replacement Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"1648\" data-end=\"1718\"\u003eDesigned to replace most standard \u003cstrong data-start=\"1682\" data-end=\"1707\"\u003e18mm CO₂ laser lenses\u003c\/strong\u003e with ease.\u003c\/p\u003e\n\u003ch5 data-section-id=\"19qhbrs\" data-start=\"1720\" data-end=\"1750\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1724\" data-end=\"1750\"\u003eSatisfaction Guarantee\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-start=\"1751\" data-end=\"1866\"\u003eIf you're not completely satisfied with the enhanced performance, return it for full credit toward a standard lens.\u003c\/p\u003e\n\u003chr data-start=\"1868\" data-end=\"1871\"\u003e\n\u003ch4 data-section-id=\"1upo6c7\" data-start=\"1873\" data-end=\"1910\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1876\" data-end=\"1910\"\u003eAvailable Focal Length Options\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-start=\"1912\" data-end=\"1969\"\u003eChoose the focal length best suited for your application:\u003c\/p\u003e\n\u003cul data-start=\"1971\" data-end=\"2259\"\u003e\n\u003cli data-section-id=\"13np5rt\" data-start=\"1971\" data-end=\"2045\"\u003e\n\u003cstrong data-start=\"1973\" data-end=\"1990\"\u003e38.1mm (1.5\")\u003c\/strong\u003e – Ideal for detailed engraving and fine precision work\u003c\/li\u003e\n\u003cli data-section-id=\"19j7xao\" data-start=\"2046\" data-end=\"2124\"\u003e\n\u003cstrong data-start=\"2048\" data-end=\"2065\"\u003e50.8mm (2.0\")\u003c\/strong\u003e – Versatile for general engraving and cutting applications\u003c\/li\u003e\n\u003cli data-section-id=\"6jr14p\" data-start=\"2125\" data-end=\"2188\"\u003e\n\u003cstrong data-start=\"2127\" data-end=\"2144\"\u003e63.5mm (2.5\")\u003c\/strong\u003e – Balanced performance for depth and detail\u003c\/li\u003e\n\u003cli data-section-id=\"1g9zhq6\" data-start=\"2189\" data-end=\"2259\"\u003e\n\u003cstrong data-start=\"2191\" data-end=\"2209\"\u003e101.6mm (4.0\")\u003c\/strong\u003e – Longer focal range for specialized applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2261\" data-end=\"2264\"\u003e\n\u003ch4 data-section-id=\"193hxb4\" data-start=\"2266\" data-end=\"2295\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2269\" data-end=\"2295\"\u003eProduct Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul data-start=\"2297\" data-end=\"2723\"\u003e\n\u003cli data-section-id=\"1f8njgi\" data-start=\"2297\" data-end=\"2334\"\u003e\n\u003cstrong data-start=\"2299\" data-end=\"2308\"\u003eType:\u003c\/strong\u003e Meniscus Laser Focus Lens\u003c\/li\u003e\n\u003cli data-section-id=\"1co40ls\" data-start=\"2335\" data-end=\"2389\"\u003e\n\u003cstrong data-start=\"2337\" data-end=\"2350\"\u003eMaterial:\u003c\/strong\u003e Premium ZnSe Laser Grade (Made in USA)\u003c\/li\u003e\n\u003cli data-section-id=\"lq0ctm\" data-start=\"2390\" data-end=\"2414\"\u003e\n\u003cstrong data-start=\"2392\" data-end=\"2407\"\u003eWavelength:\u003c\/strong\u003e 10.6µm\u003c\/li\u003e\n\u003cli data-section-id=\"fnu5qq\" data-start=\"2415\" data-end=\"2468\"\u003e\n\u003cstrong data-start=\"2417\" data-end=\"2429\"\u003eCoating:\u003c\/strong\u003e Anti-Reflective (AR) Coated Both Sides\u003c\/li\u003e\n\u003cli data-section-id=\"19k2gs\" data-start=\"2469\" data-end=\"2489\"\u003e\n\u003cstrong data-start=\"2471\" data-end=\"2484\"\u003eDiameter:\u003c\/strong\u003e 18mm\u003c\/li\u003e\n\u003cli data-section-id=\"pnqs2j\" data-start=\"2490\" data-end=\"2545\"\u003e\n\u003cstrong data-start=\"2492\" data-end=\"2511\"\u003ePower Handling:\u003c\/strong\u003e Recommended for Lasers Under 200W\u003c\/li\u003e\n\u003cli data-section-id=\"4br01l\" data-start=\"2546\" data-end=\"2584\"\u003e\n\u003cstrong data-start=\"2548\" data-end=\"2571\"\u003eDiameter Tolerance:\u003c\/strong\u003e +0 \/ -0.13mm\u003c\/li\u003e\n\u003cli data-section-id=\"1c9p3s\" data-start=\"2585\" data-end=\"2625\"\u003e\n\u003cstrong data-start=\"2587\" data-end=\"2618\"\u003eCenter Thickness Tolerance:\u003c\/strong\u003e ±0.1mm\u003c\/li\u003e\n\u003cli data-section-id=\"1bl0trc\" data-start=\"2626\" data-end=\"2659\"\u003e\n\u003cstrong data-start=\"2628\" data-end=\"2655\"\u003eFocal Length Tolerance:\u003c\/strong\u003e \u0026lt;1%\u003c\/li\u003e\n\u003cli data-section-id=\"1dfxwd8\" data-start=\"2660\" data-end=\"2698\"\u003e\n\u003cstrong data-start=\"2662\" data-end=\"2681\"\u003eClear Aperture:\u003c\/strong\u003e ≥90% of Diameter\u003c\/li\u003e\n\u003cli data-section-id=\"s4oeow\" data-start=\"2699\" data-end=\"2723\"\u003e\n\u003cstrong data-start=\"2701\" data-end=\"2717\"\u003eScratch\/Dig:\u003c\/strong\u003e 40-20\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2725\" data-end=\"2728\"\u003e\n\u003ch4 data-section-id=\"xtbc71\" data-start=\"2730\" data-end=\"2765\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2733\" data-end=\"2765\"\u003eImportant Compatibility Note\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-start=\"2767\" data-end=\"2940\"\u003eIf your unfocused laser beam diameter is \u003cstrong data-start=\"2808\" data-end=\"2826\"\u003e10mm or larger\u003c\/strong\u003e, this lens may not be the ideal option for your setup. Please verify your machine specifications before ordering.\u003c\/p\u003e\n\u003chr data-start=\"2942\" data-end=\"2945\"\u003e\n\u003ch4 data-section-id=\"m1cgkr\" data-start=\"2947\" data-end=\"2983\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2950\" data-end=\"2983\"\u003ePopular Machine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-start=\"2985\" data-end=\"3064\"\u003eCompatible with many popular CO₂ laser systems that use 18mm optics, including:\u003c\/p\u003e\n\u003ch5 data-section-id=\"1bc4duf\" data-start=\"3066\" data-end=\"3082\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3070\" data-end=\"3082\"\u003eAP Lazer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul data-start=\"3083\" data-end=\"3114\"\u003e\n\u003cli data-section-id=\"78lf7\" data-start=\"3083\" data-end=\"3098\"\u003eAP Lazer 1812\u003c\/li\u003e\n\u003cli data-section-id=\"7cmoq\" data-start=\"3099\" data-end=\"3114\"\u003eAP Lazer 2616\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-section-id=\"1512hfn\" data-start=\"3116\" data-end=\"3128\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3120\" data-end=\"3128\"\u003eAEON\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul data-start=\"3129\" data-end=\"3142\"\u003e\n\u003cli data-section-id=\"1qdvps4\" data-start=\"3129\" data-end=\"3142\"\u003eMira Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-section-id=\"tfvdku\" data-start=\"3144\" data-end=\"3158\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3148\" data-end=\"3158\"\u003eOMTech\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul data-start=\"3159\" data-end=\"3260\"\u003e\n\u003cli data-section-id=\"1029gu3\" data-start=\"3159\" data-end=\"3172\"\u003eAF-2028 60W\u003c\/li\u003e\n\u003cli data-section-id=\"1g2resd\" data-start=\"3173\" data-end=\"3186\"\u003eAF-2435 80W\u003c\/li\u003e\n\u003cli data-section-id=\"11c0035\" data-start=\"3187\" data-end=\"3197\"\u003eK40E 40W\u003c\/li\u003e\n\u003cli data-section-id=\"19u4bj1\" data-start=\"3198\" data-end=\"3211\"\u003eMF-1220 50W\u003c\/li\u003e\n\u003cli data-section-id=\"vifhmg\" data-start=\"3212\" data-end=\"3225\"\u003eMF-1624 55W\u003c\/li\u003e\n\u003cli data-section-id=\"tj2x16\" data-start=\"3226\" data-end=\"3239\"\u003eMF-1630 70W\u003c\/li\u003e\n\u003cli data-section-id=\"1pgf53k\" data-start=\"3240\" data-end=\"3260\"\u003eMF-2028 80W \/ 100W\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-section-id=\"1ip646r\" data-start=\"3262\" data-end=\"3275\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3266\" data-end=\"3275\"\u003eOrion\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul data-start=\"3276\" data-end=\"3288\"\u003e\n\u003cli data-section-id=\"z08y3f\" data-start=\"3276\" data-end=\"3288\"\u003eOrion 100W\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3290\" data-end=\"3360\"\u003e\u003cem data-start=\"3290\" data-end=\"3360\"\u003eCompatibility list is provided as a reference and is not exhaustive.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr data-start=\"3362\" data-end=\"3365\"\u003e\n\u003cp data-start=\"3367\" data-end=\"3677\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eNeed help understanding laser lens specifications like \u003cstrong data-start=\"3422\" data-end=\"3443\"\u003eFocal Length (FL)\u003c\/strong\u003e, \u003cstrong data-start=\"3445\" data-end=\"3463\"\u003eDiameter (Dia)\u003c\/strong\u003e, or \u003cstrong data-start=\"3468\" data-end=\"3491\"\u003eEdge Thickness (ET)\u003c\/strong\u003e? Our \u003cstrong data-start=\"3497\" data-end=\"3528\"\u003eChoosing the Right CO₂ Lens\u003c\/strong\u003e blog provides quick and easy guidance to help you choose the best lens for your laser system and applications.\u003c\/p\u003e\n\u003cdiv class=\"min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words\"\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/americanphotonics.github.io\/product-finder.html\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cimg alt=\"product selector\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1723\/4335\/files\/productselectoricon_c7ce69a5-9021-4834-b763-049bf7c8ba75_160x160.jpg?v=1699887880\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"American Photonics","offers":[{"title":"38.1mm(1.5\")","offer_id":40728485691453,"sku":"ADPT-18-12.7-38.1","price":46.0,"currency_code":"USD","in_stock":true},{"title":"50.8mm(2.0\")","offer_id":40728485724221,"sku":"ADPT-18-12.7-50.8","price":46.0,"currency_code":"USD","in_stock":true},{"title":"63.5mm(2.5\")","offer_id":40728485756989,"sku":"ADPT-18-12.7-63.5","price":46.0,"currency_code":"USD","in_stock":true},{"title":"101.6mm(4.0\")","offer_id":40728485789757,"sku":"ADPT-18-12.7-101.6","price":46.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1723\/4335\/files\/ZnSe_Focus_lens_18mm_Dia_For_C02_laser_10.6um._Direct_replacement_for_any_18mm_lens.png?v=1778602763","url":"https:\/\/shop.americanphotonics.com\/ko\/products\/18mm-znse-focus-lens-for-c02-laser-10-6um","provider":"American Photonics","version":"1.0","type":"link"}