Spectacle lenses and method of making same
US8622545B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 16, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of making a pair of spectacle lenses which may reduce induced binocular vision distortions where wearer and frame metrics and a lens class are inputted into a computer program, and the computer program determines the left and right lens front curve radius in which there is a substantially linear relationship between the rate of change of lateral vergence and degree of ocular rotation and then adjusts the left and right lens front curve radius and the left and right lens center thickness such that the lateral inter-ocular static magnification target value is between about −3% and about +3% in the lateral plane and the stimulus to near vergence is within the wearer's vergence limits. The computer program then determines a left and right lens index of refraction and a left and right lens material and the generated lens parameters are then used to machine the spectacle lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.