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Proceedings Paper

A single mirror magnifier with freeform surfaces using radial basis functions based on surface slope
Author(s): Liuchang Xiao; Xing Zhao; Kainian Tong; Bo Zhang; Lipei Song; Lingjie Wang; Xiaodong Zhang
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Paper Abstract

It is of great importance to utilize a model to characterize the surfaces while designing an optical imaging system with freeform surfaces. For this purpose, a model with radial basis function based on surface slope (RBF-slope) for optical freeform surfaces was investigated by establishing the relationship between the shape factor and local surface slope, and improving the distributions of the basis functions for circular apertures. We performed the fitting experiment for “bumpy” paraboloids; the results demonstrated that the RBF-slope model has stronger fitting ability than conventional RBF model. A prototype of single mirror magnifier for head-worn display was designed and fabricated, in which the freeform mirror was described and characterized using the RBF-slope model. It can be proved by the design results that the RBF-slope model for optical freeform surfaces has obvious advantages in aberration balancing over conventional model. The primary experiments showed that the freeform surface was well fabricated and expected image display can be achieved.

Paper Details

Date Published: 6 January 2020
PDF: 8 pages
Proc. SPIE 11383, Sixth Asia Pacific Conference on Optics Manufacture, 113830B (6 January 2020); doi: 10.1117/12.2524238
Show Author Affiliations
Liuchang Xiao, Nankai Univ. (China)
Xing Zhao, Nankai Univ. (China)
Kainian Tong, Nankai Univ. (China)
Bo Zhang, Nankai Univ. (China)
Lipei Song, Nankai Univ. (China)
Lingjie Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Xiaodong Zhang, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 11383:
Sixth Asia Pacific Conference on Optics Manufacture
C. F. Benny Cheung; Lai Ting Ho, Editor(s)

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