Back to results
US 7,516,937 B2Granted
Deformable molds and methods for their use in the manufacture of ophthalmic lenses
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsGregory J. Hofmann, Thomas R. Rooney, David Pearson, Zaffir A. Chaudhry, Jacqueline M. Roche, Jeffrey H. Roffman, Larry G. Jones, Mark A. Ealey
Life of this patent
Estimating the term…
Abstract
The present provides deformable molds and methods for manufacturing ophthalmic lenses using deformable molds. The molds of the invention may be used in the custom manufacture of ophthalmic lenses.
Claims18
A mold for use in the manufacture of ophthalmic lenses, comprising:
- a.) at least one mold half comprising a casting cup having (i) a non-molding surface having a plurality of pusher pins attached thereto, and (ii) a molding surface, wherein at least a portion of the molding surface is capable of being reversibly deformed;
- and
- b.) adjustment means for reversibly deforming the deformable portion of the molding surface, the adjustment means comprising a plurality of micro-actuators wherein each of the micro-actuators has at one end thereof a mechanical lever capable of moving one of the plurality of pusher pins so that the pusher pin exerts a pressure on the non-molding surface.
A mold for use in the manufacture of contact lenses, comprising:
- a.) at least one mold half comprising a casting cup having a non-molding surface having a plurality of pusher pins attached thereto, and
- (ii) (ii) a molding surface, wherein at least a portion of the molding surface is capable of being reversibly deformed;
- and electro-resistive micro-actuators for reversibly deforming the deformable portion of the molding surface, each of the micro-actuators has at one end thereof a mechanical lever capable of moving one of the plurality of pusher pins so that the pusher pin exerts a pressure on the non-molding surface.
Dependencies are inferred from the claim text.