Method for determining a progressive lens and associated system
US12386199B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 27, 2019 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Sep 26, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for determining a design of a progressive lens intended to be worn by a future wearer, the progressive lens comprising a front surface and a back surface, at least one of the front surface and the back surface comprising a progression profile on its general spherical shape, said at least one progression profile defining a meridian line extending from a distance-vision point to a near-vision point, said meridian line comprising a vertical portion passing through the distance-vision point and an inclined portion passing through the near-vision point, the vertical portion and the inclined portion forming an angle between them, the method including obtaining first data representative of a first measurement of a first postural instability of the future wearer when seeing a visual pattern moving along an mediolateral direction, and determining a reparation between the first progression profile and the second progression profile based on the first data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.