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US 2017/0072649 A1Published application
Systems and methods for the production of contact lenses
AssigneeMenicon Singapore Pte Ltd.
InventorStephen D. Newman
Life of this patent
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Abstract
An apparatus for spin casting lenses includes a rotatable tube, the rotatable tube defining a longitudinal cavity, wherein the longitudinal cavity is configured to receive molds. According to one exemplary embodiment, the rotatable tube is made of metal and includes a plurality of apertures configured to permit the transmission of actinic radiation.
Claims20
An apparatus for spin casting lenses, comprising:
- a rotatable tube, the rotatable tube defining a longitudinal cavity;
- wherein the longitudinal cavity is configured to receive at least one contact lens mold;
- and
- wherein the rotatable tube is at least partially made of an opaque material.
1 more element
A method of centrifugally casting a lens comprising:
- providing a first rotatable tube;
- introducing at least one mold into the internal bore of the first rotatable tube, the mold containing a polymerizable liquid;
- partially curing the polymerizable liquid in the first rotatable tube;
- removing the mold from the first rotatable tube;
- providing at least one second curing device;
- introducing the mold into the second curing device;
- and
- completing the curing of the polymerizable liquid in the second curing device.
5 more elements
A system for spin casting a lens comprising:
- a first curing device in the form of a rotatable tube, the rotatable tube being configured to partially cure a polymerizable liquid contained in at least one mold;
- and
- at least one second curing device, the second curing device being configured to finalize the curing of the polymerizable liquid contained in the mold.
Dependencies are inferred from the claim text.