Production of customized progressive ophthalmic lens
US8474979B2 · kind B2 · utility
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3References
25Claims
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Inventor
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Mar 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C13/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method makes a customized progressive ophthalmic lens intended for an identified wearer that includes measurements of the inclination of the wearer's head. These measures are made when the wearer performs visual tasks in far-vision conditions, by consecutively looking horizontally, then towards the ground. A variation of the optical power of the progressive lens, below a reference direction for the far vision, is adjusted on the basis of the measure results. The habituation period of the wearer to the progressive lens can thus be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.