Plastic lens systems and compositions
First Claim
1. A system for preparing an eyeglass lens, comprising:
- an apparatus comprising;
a mold assembly comprising a mold cavity, wherein the mold assembly is configured to receive a lens forming composition within the cavity;
a first lens curing unit configured to direct activating light toward the mold assembly during use;
a second lens curing unit configured to apply heat or activating light to the mold assembly to substantially complete curing of the eyeglass lens;
a programmable controller configured to substantially simultaneously control operation of the first lens curing unit and the second lens curing unit;
a lens forming composition adapted to be disposed within the mold cavity, comprising;
a monomer that cures by exposure to activating light to form the eyeglass lens during use; and
a photoinitiator that initiates curing of the monomer in response to being exposed to activating light.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for preparing a plastic eyeglass lens includes a coating unit and a lens curing unit. The apparatus is preferably configured to allow the operation of both the coating unit and the lens curing unit. The apparatus may also include a post-cure unit and a controller. The controller is configured to control the operation of the coating unit, the lens curing unit and the post-cure unit. The lens forming unit may include an LCD filter disposed between activating light sources and a mold assembly. The mold assembly preferably includes two mold members held together by a gasket. The gasket preferably includes four protrusions spaced at 90 degree intervals about the gasket. A lens forming composition may include a first photochromic compound, a second photochromic compound and a light effector. The light effector may alter the color of a lens when exposed to photochromic activating light, when compared to a lens formed from a lens forming composition which does not include a light effector.
238 Citations
49 Claims
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1. A system for preparing an eyeglass lens, comprising:
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an apparatus comprising;
a mold assembly comprising a mold cavity, wherein the mold assembly is configured to receive a lens forming composition within the cavity;
a first lens curing unit configured to direct activating light toward the mold assembly during use;
a second lens curing unit configured to apply heat or activating light to the mold assembly to substantially complete curing of the eyeglass lens;
a programmable controller configured to substantially simultaneously control operation of the first lens curing unit and the second lens curing unit;
a lens forming composition adapted to be disposed within the mold cavity, comprising;
a monomer that cures by exposure to activating light to form the eyeglass lens during use; and
a photoinitiator that initiates curing of the monomer in response to being exposed to activating light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. An apparatus for preparing an eyeglass lens, comprising:
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a mold assembly comprising a mold cavity, wherein the mold assembly is configured to receive a lens forming composition within the cavity;
a first lens curing unit configured to direct activating light to the mold assembly;
a second lens curing unit configured to apply heat or activating light to the mold assembly to substantially complete curing of the eyeglass lens; and
a programmable controller configured to substantially simultaneously control operation of the first lens curing unit and the second lens curing unit. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification