Description

F-Theta lenses are precision scanning lenses designed for laser material processing applications. Their fundamental optical characteristic is the linear relationship between image height and scan angle, expressed as y = f·θ, which ensures constant spot velocity across the entire focal plane . These lenses convert rotational mirror movement into uniform linear motion, enabling consistent processing quality over the scan field.
Constructed from high-quality materials such as fused silica, ZnSe, and optical glass, F-Theta lenses feature low absorption and high damage thresholds for demanding laser environments . They are essential components in laser marking, engraving, welding, cutting, and micromachining systems .
Our company specializes in customized F-Theta lenses across key industrial wavelengths: 248nm for deep-UV micromachining, 355nm for UV applications, 1064nm for Nd:YAG lasers, and 10.6μm for CO₂ laser systems . Each lens is optimized for specific wavelength performance with appropriate anti-reflective coatings, ensuring minimal focal shift and superior beam uniformity. We offer complete design flexibility to meet your exact specifications, from focal length and scan field to mounting configurations.