{"product_id":"briserm-fiber-laser-lens-optical-protective-windows","title":"Briserm  Laser Protective Lens 27.9x4.1mm 34x5mm 37x7mm","description":"\u003cstyle\u003eimg { display: block; margin: 0; }\u003c\/style\u003e\n\u003ch1\u003eBriserm  Fiber Laser Protective Lens (27.9x4.1 \/ 34x5 \/ 37x7mm)\u003c\/h1\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eProtect your valuable laser cutting head optics with these premium \u003cstrong\u003efused silica laser protective lenses\u003c\/strong\u003e. Designed for high-power 1064nm fiber lasers, they shield your focusing lens and internal optical systems from metal spatter, dust, and contaminants that cause costly damage or poor beam quality.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003e Key Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Sizes Available\u003c\/strong\u003e: Choose from 27.9x4.1mm, 34x5mm, or 37x7mm to fit your specific laser cutting head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Fused Silica Material\u003c\/strong\u003e: Made of high-purity quartz with advanced anti-reflective (AR) coating for exceptional clarity and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Transmittance \u0026amp; Low Absorption\u003c\/strong\u003e: Optimized for 1064nm fiber lasers, delivering high light transmittance while minimizing energy loss and self-heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Power Compatibility\u003c\/strong\u003e: Supports 0-40kW fiber lasers, ideal for industrial-grade cutting and welding machines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Fit\u003c\/strong\u003e: Compatible with Raytools, Precitec, Bodor, WSX, and other industry-standard laser cutting heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective Protection\u003c\/strong\u003e: Prevents splatter, debris, and contaminants from damaging expensive focusing lenses and optical systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3\u003e Product Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Fiber Laser Protective Lens \/ Protective Window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e: 27.9x4.1mm, 34x5mm, 37x7mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-purity fused silica (quartz) with AR coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWavelength\u003c\/strong\u003e: 1064nm (fiber laser)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupported Power\u003c\/strong\u003e: 0-40kW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e: Raytools, Precitec, Bodor, WSX, and most mainstream laser cutting heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/4192\/7930\/files\/e3b748f25568cd3eb9ae35babfac1a99.jpg?v=1776912578\" alt=\"\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/4192\/7930\/files\/2_fd61db36-3a27-49a4-8434-00ec9f5d4129.jpg?v=1776494660\" alt=\"\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/4192\/7930\/files\/3_8aa69591-6473-4296-85a2-e4e857cc16fd.jpg?v=1776494660\" alt=\"\"\u003e 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