2 July 1999 Analysis of assymetry of dual beam scanning field by polygon scanners
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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.
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Yixin Zhang, Yixin Zhang, Linghua Chen, Linghua Chen, } "Analysis of assymetry of dual beam scanning field by polygon scanners", Proc. SPIE 3787, Optical Scanning: Design and Application, (2 July 1999); doi: 10.1117/12.351655; https://doi.org/10.1117/12.351655
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