F-θ Scanning Objective
The F-θ scan objective is a special optical system widely used in laser printing and laser diameter measurement. Dynamic laser-scanning measurement requires good optical dynamics for micrometer-level accuracy; F-θ lenses commonly serve as the scanning emission optics. They are widely used in infrared and laser scanning, with increasing demands for scanning performance across the field. The final source sentence links the objective's image height to a linear image-plane scanning rate but leaves the image-height relationship incomplete.
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