Papers by Keyword: Progressive Lens

Abstract: Nowadays, the proliferation of commercial applications of consumer electronics and advanced optics has imposed extensive requirements on the fabrication of non-conventional geometries and free-form surfaces with stringent achievable tolerances and extremely high accuracy and surface roughness. This paper exhibits our successful applications of ultra-precision free-form machining technology to the production of a variety of advanced imaging and illumination optics.

Abstract: 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.