{"id":62,"date":"2026-06-02T14:58:41","date_gmt":"2026-06-02T14:58:41","guid":{"rendered":"https:\/\/lasercoppernozzle.com\/product\/ar-protection-lens-d30-3mm\/"},"modified":"2026-06-03T04:22:07","modified_gmt":"2026-06-03T04:22:07","slug":"ar-protection-lens-d30-3mm","status":"publish","type":"product","link":"https:\/\/lasercoppernozzle.com\/zh_CN\/product\/ar-protection-lens-d30-3mm\/","title":{"rendered":"Laser Protection Lens \u2014 AR-Coated Fused Silica"},"content":{"rendered":"<p>High-precision protective windows shielding focusing optics from molten spatter, dust, and gas residue. Manufactured from imported fused silica with multilayer anti-reflective coating optimised for fiber laser wavelengths (900\u20131080nm). Each lens is individually inspected and ships in a dust-free clamshell case with QC report available on request.<\/p>\n<h4>Technical Specifications<\/h4>\n<table>\n<tr>\n<td><strong>Material<\/strong><\/td>\n<td>Imported fused silica<\/td>\n<\/tr>\n<tr>\n<td><strong>Surface quality<\/strong><\/td>\n<td>20\/10, 10\/5<\/td>\n<\/tr>\n<tr>\n<td><strong>Transmitted wavefront<\/strong><\/td>\n<td>&lt; 3\u03bb @ 632.8 nm<\/td>\n<\/tr>\n<tr>\n<td><strong>Diameter tolerance<\/strong><\/td>\n<td>+0 \/ \u22120.127 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Edge thickness tolerance<\/strong><\/td>\n<td>\u00b10.1 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>Clear aperture<\/strong><\/td>\n<td>90% of central diameter<\/td>\n<\/tr>\n<tr>\n<td><strong>Reflectance @ 900\u20131080 nm<\/strong><\/td>\n<td>&lt; 0.2% R \/ surface<\/td>\n<\/tr>\n<tr>\n<td><strong>Damage threshold<\/strong><\/td>\n<td>&gt; 15 J\/cm\u00b2 \u00b7 10 ns<\/td>\n<\/tr>\n<\/table>\n<h4>Available Sizes (Diameter \u00d7 Thickness, mm)<\/h4>\n<p>18\u00d72 \u00b7 20\u00d72 \u00b7 20\u00d73 \u00b7 22.35\u00d74 \u00b7 24.9\u00d71.5 \u00b7 25\u00d72 \u00b7 25.4\u00d74 \u00b7 26\u00d73 \u00b7 26.5\u00d75 \u00b7 27\u00d72 \u00b7 27.9\u00d74.1 \u00b7 28\u00d72 \u00b7 30\u00d72 \u00b7 30\u00d74 \u00b7 30\u00d75 \u00b7 34\u00d75 \u00b7 36\u00d73 \u00b7 36\u00d75 \u00b7 37\u00d75 \u00b7 37\u00d77 \u00b7 38\u00d75 \u00b7 40\u00d73 \u00b7 40\u00d75 \u00b7 42\u00d79 \u00b7 50\u00d72 \u00b7 50\u00d74 \u00b7 50\u00d78 \u00b7 53\u00d71.5 \u00b7 55\u00d71.5 \u00b7 93\u00d73 \u00b7 98\u00d72 \u00b7 100\u00d73 \u00b7 113\u00d73 \u00b7 120\u00d75 \u00b7 134\u00d73 \u00b7 144\u00d73<\/p>\n<p><em>Additional specifications available on request. Custom sizes possible for orders above 100 pcs.<\/em><\/p>\n<p><a href=\"\/zh_CN\/contact\/\">Send us your head model<\/a> for exact size confirmation within 6 hours.<\/p>","protected":false},"excerpt":{"rendered":"<p>High-precision AR-coated fused silica protection window. D30\u00d73mm. Tested to &gt;15 J\/cm\u00b2 damage threshold. Compatible with Raytools, Precitec, WSX, BOCI, Bodor and all major cutting head platforms.<\/p>","protected":false},"featured_media":65,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[34],"product_tag":[],"class_list":{"0":"post-62","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-protection-lenses","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Laser Protection Lens \u2014 AR-Coated Fused Silica - High Precision Laser Nozzles | Copper Nozzle for Major Laser Cutting Brands<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lasercoppernozzle.com\/zh_CN\/product\/ar-protection-lens-d30-3mm\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Laser Protection Lens \u2014 AR-Coated Fused Silica - High Precision Laser Nozzles | Copper Nozzle for Major Laser Cutting Brands\" \/>\n<meta property=\"og:description\" content=\"High-precision AR-coated fused silica protection window. 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