Mold for contact lens with non-rotationally symmetric rim or edge
US10786959B2 · kind B2 · utility
1Cited by
35References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 18, 2016 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Oct 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/048
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mold for a front curve of an ophthalmic lens includes an inner region having a non-rotationally symmetric shape, an outer region having a rotationally symmetric shape, and a continuous middle region between the inner region and the outer region. A first portion of the middle region is in contact with the inner region, defining a non-rotationally symmetric rim or edge of a front surface of the ophthalmic lens. A second portion of the middle region is in contact with the outer region and is rotationally symmetrical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.