The Application of Surface Fairing Technique in Progressive Lens Processing

Abstract:

Article Preview

Based on the analysis of characteristics of progressive lens, it can be found that lens uneven change of curvature is an important reason of defect on progressive lens processed by single-point diamond cutting technique. By applying least square fairing method to fair the surface which is fitted and interpolated by Double Cubic B-Spline method, the curvature change of progressive surface becomes even. The processing experiment shows that the method in this paper can eliminate the defect effectively in the ultra-precision processing of progressive lenses.

Info:

Periodical:

Key Engineering Materials (Volumes 364-366)

Edited by:

Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO

Pages:

1246-1250

DOI:

10.4028/www.scientific.net/KEM.364-366.1246

Citation:

J. J. Du et al., "The Application of Surface Fairing Technique in Progressive Lens Processing", Key Engineering Materials, Vols. 364-366, pp. 1246-1250, 2008

Online since:

December 2007

Export:

Price:

$35.00

[1] C. Fowler: Applied Optics. Vol. 32 (1992), p.144.

[2] Lo. Chih-Ching: International Journal of Machine Tools & Manufacture. Vol. 11 (2000), p.307.

[3] W. J. Gordon, R. F. Riesenfeld: Computer Aided Geometric Design. Vol. 10 (1974), p.21.

[4] JS. Hwang: Computer Aided Design. Vol. 24 (1992), p.669.

[5] X. X. Zhu: Technique of Freeform Curve and Surface (Scientic Press, China 2000).

[6] B. Q. Su, D. Y. Liu: Computing Geometry (Shang hai Sci. & Tech. Press, China 1981).

[7] J. H. Clark. 3-D Design of Free-Form B-Spline Surface (Ph. D Thesis, Univer-sity of Utah 1981). x x + + + x x x x x x x x x x x + + + + + x.

In order to see related information, you need to Login.