Smoothly blended optical surfaces

Details Smoothly blended optical surfaces Smoothly blended optical surfaces

2005-01-18

2005-01-18

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S177000

Reexamination Certificate

active

06843563

ABSTRACT:
Apparatus, products, and methods are described that relate to blending various disparate optical surfaces in a smooth and continuous manner. In cross section, the two disparate surfaces are represented as meridional profiles. A blend zone profile is described by a single third-order polynomial. In the case of rotationally symmetric optics, one cross-section suffices for the description of the entire surface. In the case of non-rotationally symmetric optics, an increased number of cross-sections are necessary to produce the desired three-dimensional surface, thus meridional profiles are calculated at selected azimuthal locations to describe the full surface.

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