F-theta Lens
The F-theta lens is the core optical component of laser scanning systems such as laser marking and laser engraving. Its core function is to achieve flat-field scanning of the image plane by introducing a specific barrel distortion optical design, ensuring a linear relationship between the scanning angle and the image height, keeping the focus size and energy density of the laser spot uniform and consistent throughout the entire scanning plane, while correcting the field curvature aberration of traditional scanning lenses. It is the core imaging element of laser scanning systems.
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