TELECENTRIC F-THETA LENSES FOR SCANNING SYSTEMS
T.N. Khatsevich, A.I. Bodnarchuk
Siberian State University of Geosystems and Technologies, Novosibirsk, Russia
Keywords: F-Theta lens, telecentric trace, distortion, scan path, deviations from linearity and straightness
Abstract
A geometric model of an ideal F-Theta lens is proposed. The trajectory of the scanning spot movement along the scanning working field is calculated. The results of the study of several foreign lenses and lenses proposed by the authors in terms of deviations from the linear law and from the straightness of the trajectory are presented. The results of calculating a number of lenses for scanning working fields from 35x35 to 400x400 mm are reported.
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