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US 6,280,171 B1Granted
El apparatus for eyeglass lens curing using ultraviolet light
AssigneeQ2100, Inc.
InventorOmar M. Buazza
Life of this patent
Estimating the term…
Abstract
Method and apparatus for making and coating a plastic lens. Oxygen barrier containing photoinitiator is used to cure incompletely cured lens portions. Radiation pulses are used to control lens curing rate. Lens is postcured while in a mold cavity using a conductive heat source.
Claims24
A system for making a plastic eyeglass lens, comprising:
- (i) a lens-forming apparatus, comprising:
- a first mold member having a casting face and a non-casting face;
- a second mold member having a casting face and a non-casting face, the second mold member being spaced apart from the first mold member during use such that the casting faces of the first mold member and the second mold member at least partially define a mold cavity;
- and
- a light generator for generating and directing ultraviolet light against at least one of the first and second mold members during use;
- and
- (ii) a conductive heating apparatus, the conductive heating apparatus configured to conductively apply heat to a face of a mold member during use, and wherein a portion of the conductive heating apparatus in contact with at least one of the mold members, changes shape during use conforming to the shape of at least a portion of the non-casting face of at least one of the mold members.
4 more elements
Dependencies are inferred from the claim text.