Cosmetic contact lenses having a sparkle effect
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsDawn D. Wright, Diana Zanini, Kanda Kumar Balasubramanian, Terry L. Spaulding, Douglas L. Evans, Jeffrey H. Roffman, Karin D. McCarthy
Life of this patent
Estimating the term…
Abstract
The invention provides sparkle additives useful in producing cosmetic lenses, and lenses produced using the sparkle additives that produce a sparkle-effect when the lens is viewed on-eye. The sparkle effect is produced while, at the same time, maintaining the natural appearance of the eye.
Claims19
A contact lens comprising cholesteric liquid crystal particles with sparkle density (ρ) greater than 0.5, a degree of randomness (ksp) greater than 0.55 and exhibiting sparkle.
A method of making a contact lens that exhibits sparkle comprising applying the sparkle additive to a portion of the lens wherein said sparkle additive comprises cholesteric liquid crystal particles such that said lens has sparkle density (ρ) greater than 0.5 and degree of randomness (ksp) greater than 0.55.
Dependencies are inferred from the claim text.