Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1988-02-01
1989-09-19
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351 44, G02C 900
Patent
active
048675504
ABSTRACT:
Disclosed is a toroidal lens for use in a pair of sunglasses, comprising a unitary pane of transparent material which is curved about each of two substantially perpendicular axes, each having a substantially constant radius such that the lens defines a portion of the surface of a toroid. A cross-section taken along the horizontal axis of the lens reveals an arcuate configuration which may be characterized as having a rfadius R.sub.1. A cross-section taken along a vertical axis reveals an arcuate configuration through the lens having a radius designated R.sub.2. Optimally, R.sub.2 .gtoreq.1.10 R.sub.1, and the length of the lens along the horizontal arcuate cross-section is in the range of from about 51/2 inches to about 7 inches. The lens may have either a uniform thickness throughout, or may taper from a greater thickness in a region centered about the midpoint, generally above the nose of a wearer, to a lesser thickness near the peripheral ends of the lens.
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Picture of Oakley Blades as First Worn 8/27/85.
Bovernick Rodney B.
Dzierzynski R. M.
Oakley Inc.
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