Method for determining the feasibility of an ophthalmic lens
US10261341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2013 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Nov 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Method for determining the feasibility of an ophthalmic lens by an ophthalmic lens manufacturing process comprising: an ophthalmic lens data providing step, a set of surface parameters providing step, an optical parameters providing step during which a set of n optical parameters (P1, P2, . . . , Pn) is provided, n being an integer greater than or equal to 1, each optical parameter Pi being provided with a tolerance value εi, —a feasibility check determining step, during which the feasibility of the ophthalmic lens by the ophthalmic lens manufacturing process is determined by determining if for i from 1 to n: the value of the derivative of Pi with respect to the jth surface parameter αj on the nominal surface and Δαj the value of the jth surface parameter and Ai a combination of terms of order greater or equal to 2 for each Pi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.