Engrave better and faster with this ultra-high transmittance fiber laser field lensWhether you're replacing a worn scan lens or upgrading, this fiber laser lens offers extreme precision and peak optical performance across its work area to get all your stone, glass, and metal marking done right. Manufactured from premium borosilicate crown glass, this galvo scanner lens boasts strongly antireflective coatings on both sides to give you a light transmittance rate better than 99% at the 1064nm wavelength critical for CW, QCW, and Nd:YAG lasers. To ensure the longest possible service life, the coating on both sides of the lens also helps it resist scratches and other damage during daily use. The standard M85x1 threading lets you easily install this optical lens onto the galvanometer of most fiber etching machinesnew F theta lens, your laser engraving, cutting, etching, and marking work has never been easier!Features1. FIELD LENS: This powerful lens is ideal for laser marking, engraving, image transfer, material processing, and cutting systems; it creates vivid markings and flawlessly completes even your most complicated designs across its work area2 HIGH TRANSMITTANCE: This field lens for 1064 nm lasers provides up to 99% throughput with negligible distortion thanks to its crystal clear and precision engineered borosilicate crown glass construction3.SUPERIOR PERFORMANCE: Our F-theta scanning lens provides fast positioning and precision focusing so you'll be able to mark steel, aluminum, gold, and more4.LASTING DURABILITY: Our fiber laser lenses' double-sided multilayered coatings improve their natural optical properties while also strengthening them against scratches and damage during daily use, so you can keep cutting year after year5.EASY INSTALLATION: The standard M85x1 threading ensures easy installation, quickly replacing or upgrading the old lens in most laser marking machines on the market.