F-theta Scan Lens - 254mm Focal Length, 298.75mm Back Focal Length | Precision Imaging With High Performance Anti-reflection Coating And Minimum Spot Size

These F-Theta scan lens is widely used in micro material processing, such as drilling, dicing, fine cutting, structuring, perforating, marking and welding. Our F- theta lens can achieve large flat field image with high performance. The diffraction limited performance of the scan lenses results in minimum spot sizes with high uniformity over the whole scan field. Our high precise F- theta scan lenses are delivered with highly durable anti-reflection coated protective windows to avoid contamination of the front lenses during the process. In conjunction with appropriate scan systems, our scan lenses allow precise imaging for highly accurate micro-machining.
Technical data:Mounting thread: M85*1mmFocal Length: 254mmBack Focal Length:298.75mmWork Wavelength:1064nmScan angle:+/- 28 degree scan field size(diam.): 248mmSquare field size: 175*175mmIncident beam diam.(Max.): 16mmRcommended Mirror Separation:16mmX mirror distance: 34mmEncircled Energy (80% energy): 15AumMax. Diameter of lenses:88 mm Construction: 4E/4G