{"product_id":"briserm-fiber-laser-lens-fused-silica-laser-protective-windows","title":"Briserm Fiber Laser Protective Windows D30-D40 Series","description":"\u003cstyle\u003eimg { display: block; margin: 0; }\u003c\/style\u003e\n\u003ch1\u003eBriserm Fiber Laser Protective Windows (D30-D40 Series)\u003c\/h1\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThese \u003cstrong\u003ehigh-purity fused silica laser protective windows\u003c\/strong\u003e are critical spare parts for fiber laser cutting and welding machines. Designed for the 1064nm wavelength, protect your expensive laser optics while maintaining maximum performance.\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\u003eHigh Transmittance\u003c\/strong\u003e: At 1064nm, transmittance exceeds 99.76%, minimizing energy loss and reducing lens self-heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Fused Silica Material\u003c\/strong\u003e: Made of high-purity quartz (SiO₂), with a melting point ≥1700℃, excellent for high-temperature resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Scratch-Resistant\u003c\/strong\u003e: High hardness effectively resists scratches from dust, debris, and splatter, keeping the lens surface smooth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Thermal Conductivity\u003c\/strong\u003e: Enables rapid heat dissipation, reducing thermal deformation and extending service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Absorption Rate\u003c\/strong\u003e: Absorption rate \u0026lt;0.1% reduces heating and deformation, preventing performance degradation during long-term use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Fits Raytools, Precitec, Boci, Bodor, WSX, HSG, and most fiber laser cutting heads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Fiber Laser Protective Window \/ Protective Lens\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Purity Fused Silica (Quartz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWavelength\u003c\/strong\u003e: 1064nm (Fiber Laser)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmittance\u003c\/strong\u003e: \u0026gt;99.76%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbsorption Rate\u003c\/strong\u003e: \u0026lt;0.1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: D30-D40 (multiple sizes available)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMelting Point\u003c\/strong\u003e: ≥1700℃\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e: Raytools, Precitec, Boci, Bodor, WSX, HSG 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\/1_4b933bca-bcad-4caf-8033-692c6a8212a3.jpg?v=1776494862\" alt=\"\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/4192\/7930\/files\/2_3313ed13-7c70-44b9-94d5-e05bae6aa889.jpg?v=1776494862\" alt=\"\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/4192\/7930\/files\/3_d979feb7-e49a-42bf-a723-626310359eaf.jpg?v=1776494862\" alt=\"\"\u003e \u003cimg 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