Opthalmic lens
US5124734A · kind A · utility
Inventor
Key dates
| Filing date | Mar 28, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Mar 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/085
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ophthalmic lens that includes a construction that provides a static grading or some other means that yields a nonuniform power function which depends on the surface of the lens. The lens also includes a selectively operable element that effects a dynamic change in the power of the lens which is a uniform or nonuniform function of the location point on the lens. The actual power of any point on the lens is then the super position of the power due to static grating and the power due to the selectively operable element. The proper design of each power function facilitates ophthalmic lenses that are suitable and optimized for special applications as well as for general purpose usage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.