Parametric study of spinning polygon mirror deformations

William J. Nowak

doi:10.1117/12.21544

1 October 1990 Parametric study of spinning polygon mirror deformations

William J. Nowak

Proceedings Volume 1303, Advances in Optical Structure Systems; (1990) https://doi.org/10.1117/12.21544
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

This paper investigates the radial growth and facet surface distortion of spinning polygon mirrors used in xerographic laser printers. The general purpose finite element code MSC/NASTRAN is first validated with a closed form analysis of spinning disks and then used to predict the radial growth of a polygon as a function of facet number. Successive finite element calculations of facet surface distortion are then completed on polygons made of 6061 aluminum, ranging from 5 to 18 facets, 1.0 to 3.0 inches in inscribed radii, and 5 to 30 krpm in rotational speed. Using the data from these calculations, a series of parametric curves are developed plotting maximum surface irregularity vs. facet number for various inscribed radii and rotational speeds. Using these curves, an example calculation is detailed so future determination of radial and facet deformations under rotational loads is more readily available to the engineer. The paper also includes a spatial representation of deformed facet shape as a function of facet number, for a polygon with an inscribed radius of 1.5 inches and an operating speed of 30 krpm. Also discussed is the effect of center hole size on surface deformation for the 12 facet case.

Citation Download Citation

William J. Nowak "Parametric study of spinning polygon mirror deformations", Proc. SPIE 1303, Advances in Optical Structure Systems, (1 October 1990); https://doi.org/10.1117/12.21544

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