Johnson & Johnson Vision Products Inc.

Johnson and Johnson Vision Care, Inc.

Jongliang Wu

Victor Lust

Kornelis Renkema

Wybren Van Der Meulen

Daniel Tsu-Fang Wang

Richard W Abrams

Stephen Robert Beaton

Edgar V Menezes

Wallace Anthony Martin

Khaled A Chehab

Timothy R Poling

Richard J Nason

Carl G Crowe, Jr

Robert B Phillips

Gerbrand Eshuis

Jon Scott Walker

Jeffrey H Roffman

Timothy A Clutterbuck

W Anthony Martin

Patricia Ann Hutfles

Susan-Wendy B Neadle

This invention provides a contact lens comprising a front surface, a back surface, and an identifying mark, wherein said identifying mark comprises one or more holes depressed into at least one of said surfaces of said lens.

Contact lenses bearing marks

This invention provides a contact lens comprising a front surface, a back surface and an identifying mark on at least one of said front surface and said back surface, wherein said identifying mark comprises a depressed region having a cross-section which comprises at least two intersecting concave surfaces at the bottom of said depressed region.

Contact lenses bearing identifying marks

A base member for a blister package for the containment of a contact lens includes a planar flange extending outwardly about a cavity for housing the contact lens. Proximate the peripheral edge of the flange, there is formed a continuous groove into which there is pressed the material of a flexible cover sheet of the blister package so as to clampingly engage the base member.

Packaging method for contact lenses

A method of manufacturing complex optical surfaces in soft contact lenses includes a first step of defining the complex optical surfaces with a computer assisted drafting program using a mix of patient determined parameters and selected manufacturing process determined parameters to define a mathematical 'meta lens'. A machine code data set is then generated to machine a plurality of contact lens mold inserts to define a complex optical surface on each of the inserts. The machining step is conducted with a single point diamond lathe having submicron precision and repeatability. A first and second plurality of intermediate contact lens mold halves are then molded with said contact lens mold inserts to define said complex optical surfaces on said mold halves having micron range transitions between optical surfaces. The complex geometric forms and optical surfaces include bifocal lenses, aspheric lenses, and toric lenses wherein the lenses may include parabolic or elliptical geometry. The first plurality of mold halves is assembled with the second plurality of mold halves with a polymerizable monomer therebetween and polymerized to form a plurality of soft contact lenses having said complex optical surfaces defined thereon.

Method of manufacturing complex optical designs in soft contact lenses

Packaging arrangement for contact lenses

A packaging arrangement for the containment in a blister package of at least one hydrophilic contact lens in a sterile aqueous solution. Provision is made for incorporating support structure in the form of stiffening groove or wall elements in flanges of base members of the blister packages to facilitate an improved attachment between the base members of the blister packages housing the contact lenses, and a flexible cover sheet utilized for sealing engagement with the base members while incorporating additional strength to the blister package structures.

An apparatus for molding polystyrene mold halves which are used, for subsequent molding of a soft contact lens. The apparatus is designed with superior heat conduction capacity so as to minimize the molding cycle time, while simultaneously producing uniformly precise and accurate optical quality surfaces. Molten polystyrene is provided via a hot runner system to a plurality of mold cavities. In a specific variation, the convex surface provides the optical quality surface to the concave surface of the mold half produced thereby. The structural element which defines the convex surface includes a hollow cylindrical bushing and a removable power insert mounted therein, which may be changed so that the prescription strength of the contact lens to be formed by the mold may be varied. In a first embodiment, the power insert includes only a convex surface at its operational end. In a second embodiment, the power insert includes an annular flat surface surrounding the convex surface, defining at the junction therebetween a discontinuity of curvature, which imparts a sharp edge to the mold half formed thereby. The power insert may be constructed of pure steel, or alternatively, it may be made of brass, copper chromium, or cobalt-nickel alloyed martensitic steel. The power insert may be coated with a surface layer of nickel phosphor or silicone oxide, or chrome nitride. These layers may be turned to their proper thicknesses and dimensions by diamond cutters, and they may be thermally hardened.

Molding arrangement to achieve short mold cycle time

Growing community of inventors

Jacksonville, FL, United States of America

Jongliang Wu