Method for determination of a pair of progressive ophthalmic lenses
US7740358B2 · kind B2 · utility
6Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2005 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Sep 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to the determination of a pair of ophthalmic lenses, by measurement of the sagittal plane shift of the wearer for close vision with relation to the standard sagittal plane. Optimisation targets are then chosen as a function of the measured shift. The lenses are determined by optimisation with the chosen targets. Lenses are thus obtained with which the field of close vision is symmetrical with relation to the medial line as perceived by the wearer. A wearer with a displaced sagittal plane thus has a greater close vision field which facilitates binocular vision and increases acuity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.