Patent · US Active

Fractal features for enhanced tear exchange

US9091865B2 · kind B2 · utility

13Cited by

4References

6Claims

0Family size

Assignee

Johnson & Johnson Vision Care, Inc. · US

Inventors

Gregory J. Hofmann · Jacksonville Beach, US
Philippe F. Jubin · Jacksonville, US

Key dates

Filing date	Jan 18, 2012
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Jan 18, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/048
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Feature patterns may be incorporated into the peripheral region of the back curve surface of contact lenses in order to increase tear exchange between the contact lens and the cornea. The feature patterns may be based upon fractal geometry and be incorporated anywhere in the periphery of the lens. The placement feature patterns are preferably determined utilizing a combination of simulations and experimentation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.