Patent ID: 9585791
Date: 2017-03-07
CPC Classifications: A42B,A61F,G02C,Y10T

Claim:
1. A lens for protection of one or more eyes of a user, the lens comprising: a first surface; and a second surface spaced apart from the first surface such that the lens has a variable thickness between the first surface and the second surface, wherein: the first surface comprises substantially an arc; the second surface comprises a substantially elliptical curve; the lens is a smooth, arcuate, substantially plano lens; and wherein the lens has a first thickness at a center of the lens; the lens has a second thickness at a lateral edge of the lens; the lens has a third thickness at a position between the center of the lens and the lateral edge of the lens; the first thickness is greater than the third thickness; the first thickness is greater than or equal to the second thickness; the second thickness is greater than the third thickness; the first surface is a first continuous optical surface; and the second surface is a second continuous optical surface.