F-theta lenses are commonly used in applications of laser marking, laser engraving and laser cutting which request constant scan rate and linear displacement. It induces a barrel distortion to produce a flat field in the image plane over the entire working field, so that make the spot position proportional to the scanning angle.
CASTECH provides diffraction-limited and low distortion telecentric and non-telecentric types F-theta lenses with optimized design. Attributed to selected low absorption materials and our unique polishing & coating technology, our ƒ-theta lenses can resist high power with high spot consistency. All the lenses have standard threaded interface which is compatible and easy to assemble.
● Laser industrial processing
● Laser sensing system
● Ultrafast laser system