Reusable lens molds and methods of use thereof
AssigneeNovartis AG
InventorsAlice Weimin Liu, Ying Pi
Life of this patent
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AssigneeNovartis AG
InventorsAlice Weimin Liu, Ying Pi
Estimating the term…
The present invention general related to a method and a reusable mold for making a contact lens, comprising a first mold half having a first mold surface in contact with a hydrogel contact lens forming composition and a second mold half having a second mold surface in contact with the lens forming composition, wherein the first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface, wherein the cavity defines the shape of a contact lens to be molded, wherein the lens forming composition is polymerizable and/or crosslinkable by an actinic radiation, wherein at least one of the mold halves having an absorbing antireflective coating, wherein the reusable mold is a non-plastic mold.
A reusable non-plastic mold for making a contact lens, comprising a first mold half having a first mold surface in contact with a hydrogel contact lens forming composition and a second mold half having a second mold surface in contact with the lens forming composition, wherein the first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface, wherein the cavity defines the shape of a contact lens to be molded, wherein the lens forming composition is polymerizable and/or crosslinkable by UV, wherein the first mold half facing the source of UV includes a peripheral region which defines the edge of the contact lens, wherein the peripheral region has a mask to block UV, wherein the back side, non-optical surface of the second mold half has an absorbing antireflective coating.
A method for producing a contact lens, comprising the steps of:
Dependencies are inferred from the claim text.