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US 6,723,260 B1Granted
Method for marking a plastic eyeglass lens using a mold assembly holder
AssigneeQ2100, Inc.
InventorsGalen R. Powers, John T. Foreman
Life of this patent
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Abstract
A mold assembly holder is described that will facilitate the positioning and the conveyance of mold assemblies. The mold assembly holder includes at least one, preferably two, portions configured to hold a mold assembly. In one embodiment, the portions are indentations machined into a plastic or metal block that is configured to hold a standard mold assembly. The mold assembly may be placed in the indentation.
Claims21
A method for making a plastic eyeglass lens, comprising:
- placing a liquid lens forming composition in a mold cavity of a mold assembly, wherein the mold assembly comprises a front mold member and a back mold member, the lens forming composition comprising a monomer composition and a photoinitiator;
- placing the mold assembly in a mold assembly holder, the mold assembly holder comprising:
- a body, wherein the body is configured to allow activating light to reach the mold assembly;
- an indentation formed in the body, wherein the indentation is complementary to the shape of the mold assembly;
- placing the mold assembly holder on a conveyor system, wherein the conveyor system transports the mold assembly from a first lens curing unit to a second lens curing unit;
- directing activating light toward at least one of the mold members in the first lens curing unit to initiate curing of the lens forming composition;
- and
- directing activating light and heat toward at least one of the mold members in the second lens curing unit subsequent to initiating curing of the lens to form the eyeglass lens.
5 more elements
Dependencies are inferred from the claim text.