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Proceedings Paper

Analysis of assymetry of dual beam scanning field by polygon scanners
Author(s): Yixin Zhang; Linghua Chen
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Paper Abstract

In this paper, a rigorous vector analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon. Some basic equations of dual beam scan are derived, such as, the position vector for the incident point, the scalar expression for reflected ray, scan pattern on observation plane etc. Based on these equations, the asymmetry of scan angle and velocity are discussed, and it is shown that the reduction of the incident angle (theta) y, (theta) y and the x0/RF, the increase of the number of polygon facets will decrease the asymmetry of scan angle. The small values of (theta) y, x0/RF, P/RF in a range of 1.3 approximately 1.6, and small scanning angle in near-field help to reduce the asymmetry of scan velocity.

Paper Details

Date Published: 2 July 1999
PDF: 12 pages
Proc. SPIE 3787, Optical Scanning: Design and Application, (2 July 1999); doi: 10.1117/12.351655
Show Author Affiliations
Yixin Zhang, Wuxi Univ. of Light Industry (China)
Linghua Chen, Wuxi Univ. of Light Industry (China)

Published in SPIE Proceedings Vol. 3787:
Optical Scanning: Design and Application
Leo Beiser; Stephen F. Sagan; Gerald F. Marshall, Editor(s)

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