Monport F-theta M52 70mm*70mm Replacement Optical Scanning Lens for Fiber Laser Engraver

70x70mm FIELD LENS This powerful F-theta lens from Monport is ideal for laser marking, engraving, image transfer, material processing, and cutting systems; It can move markings within a 2.7x2.7 inch work area, and can even perfectly complete any design you need. HIGH TRANSMITTANCE This field lens for 1064 nm lasers provides up to 99% throughput with negligible distortion thanks to its high transmittance and precision-engineered borosilicate crown glass construction. Precision Focusing Our F-theta scanning lens meets fast positioning and precision focusing, so you can mark steel, aluminum, gold, etc. with a consistent and precise 19.5 μm spot size at any location within the 70x70mm lens range. LASTING DURABILITY This fiber laser lenses' double-sided multilayered coatings improve their natural optical properties and optimize the performance of the field lens. While also strengthening them against scratches and damage during daily use, prolonging the service life. EASY INSTALLATION The standard M52 threading and 52-68 adapter ring ensure easy installation and quick replacement.Please confirm whether the size of the field mirror matches before purchasing. If unable to confirm, please contact customer service for consultation Specifications Material: K9 Glass, Plastic Scanning Area:2.7x2.7 in. (70x70 mm) Operating Wavelength: 1064 nm (1.064 μm) Focal Length: 3.9 in. (100 mm) Entrance Beam Diameter: 0.4 in. (10 mm) Spot Size: 19.47 μm Working Distance: 4.9 in. (124.51 mm) Threading: M52x1 Overall Dimensions: 2.5x1.2 in. (65x30 mm) Net Weight: 4.4 oz. (125g) Package List F Theta Field Lens*1 Field Mirror Cover*1 52-68 Adapter Ring*1