SCANPEDIA

Glossary

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Here you'll find explanations and definitions of key technical terms from the fields of optics, scanner technology, laser technology and laser processing.

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W

Working distance

Working distance A is the distance between the entrance aperture's central axis and the working plane. A is determined by the focal length and mounting position of the F-Theta objective (if present). For prefocus systems, working distance A is determined by the dynamic focusing unit in the null position ("z=0" plane).

Free working distance A' is the mechanical distance between the scan system (bottom edge of housing including objective) and the "z=0" working plane.

Working Distance Scan System SCANLAB