Method for designing optical elements
US6824268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Nov 18, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In some embodiments of the present invention, a method for designing one or more surfaces of an ophthalmic lens includes representing the surfaces with parameters, choosing a function in the parameters and optimizing the function. The function may include one or more of the following terms: a term involving the magnification induced by the ophthalmic lens and a predetermined magnification distribution, a term involving the distortion induced by the ophthalmic lens and a predetermined distortion distribution, and a term involving the torsion induced by the ophthalmic lens and a predetermined torsion distribution. The function may also involve a term related to the thickness of the ophthalmic lens. The function may also involve one or more weight distributions. The method may include determining the weight distributions from a database of weight functions using a predetermined rule or an expert system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.