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US 7,237,893 B2Granted
Light adjustable lenses capable of post-fabrication power modification via multi-photon processes
OwnerShiao H. Chang, Robert H. Grubbs +3inventors
InventorsShiao H. Chang, Robert H. Grubbs, Julia A. Kornfield, Axel Brait, Patrick Case
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Abstract
The invention relates to novel photoinitiators and their use in light adjustable compositions. The initiatives comprise two or more multiphoton chromophores linked by a bridging compound. The bridging compound consists of a material that is compatible with the base material of the light adjustable composition. The novel photoinitiator permit the readjustment of light adjustable material without the need for significant amounts of photoabsorbers.
Claims13
A light adjustable optical element comprising:
- a base material;
- photopolymerizable macromers;
- and
- a photoinitiator
- wherein the photoinitiator has the formula:
- A-B-A1
- wherein A and A1 are multiphoton chromophores having the formula D-π-D wherein D is a tertiary amino electron donor and π is a conjugated bridge, and B is a bridging compound comprising an acrylic or siloxane moiety.
4 more elements
A light adjustable lens comprising:
- a base material;
- photopolymerizable macromers;
- and
- a photoinitiator
- wherein the photoinitiator has the formula:
- A-B-A1
- wherein A and A1 are multiphoton chromophores having the formula D-π-D wherein D is a tertiary amino electron donor and π is a conjugated bridge, and B is a bridging compound comprising an acrylic or siloxane moiety.
4 more elements
Dependencies are inferred from the claim text.