Product Details Material Quartz Fused Silica Diameter 30mm Focusing Length 100/125/150/155 Application Raytools BT240 Model BT240 High Light focus lens laserlaser Collimation Lens for RaytoolsRaytools BT240 Cutting Head Product Description High Temperature Resistance Focusing Lens Collimation Lens for Raytools BT240 Cutting Head Features Collimating Lens Focusing Lens For Raytools BT240 Cutting Head 1.Standard high efficiency low loss anti-reflectance 2.Double-side AR coating process,High transmittance 3.High Purity Fused Silica,high temperature resistance 4.Longlife time,more durable 5.Total absorption less than 30PPM,Transmission above 99.8% 6.Applicable to laser cutting,laser welding,laser cladding system Detail Raytools BT240 Focusing Lens Assembly Raytools BT240 Focusing Lens(1PCS Convex Lens+ 1PCS Meniscus Lens) Raytools BT240 Collimating Lens(1PCS Aspheric Lens)  …