Lenses capable of post-fabrication power modification
View Patent ↗The present invention relates to lenses that are capable of post-fabrication power modifications. In general, the inventive lenses comprise (i) a first polymer matrix and (ii) a refraction modulating composition that is capable of stimulus-induced polymerization dispersed therein. When at least a portion of the lens is exposed to an appropriate stimulus, the refraction modulating composition forms a second polymer matrix. The amount and location of the second polymer matrix may modify a lens characteristic such as lens power by changing its refractive index and/or by altering its shape. The inventive lenses have a number of applications in the electronics and medical fields as data storage means and as medical lenses, particularly intraocular lenses, respectively.
1. An optical element comprising:
a first polymer matrix;
a refraction modulating composition;
the refraction modulating composition comprising monomers having the formula:
X—Y—X 1
wherein X and X 1 are siloxane moieties containing a photopolymerizable group and Y is selected from the formulas:
wherein m and n are integers and R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of hydrogen, alkyl, aryl and heteroaryl, wherein the first polymer matrix is formed in the presence of the refraction modulating composition.
2. The optical element of claim 1 wherein X and X 1 are selected from the formulas:
wherein Z contains a photopolymerizable group and R 5 and R 6 are independently selected from the group consisting of hydrogen, alkyl, aryl and heteroaryl.
3. The optical element of claim 1 wherein said refraction modulating composition comprises a blend of monomers.
4. The optical element of claim 2 wherein Z contains a moiety selected from the group consisting of acrylate, allyloxy, cinnamoyl, methacrylate and vinyl.
5. The optical element of claim 1 wherein R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of C 1 to C 10 alkyls and aryls.
6. The optical element of claim 2 wherein R 5 and R 6 are independently selected from the group consisting of C 1 to C 10 alkyls and aryls.
7. The optical element of claim 1 wherein R 1 , R 2 and R 3 are selected from the group consisting of methyl, ethyl and propyl and R 4 is phenyl.
8. The optical element of claim 1 wherein R 1 and R 2 are selected from the group consisting of methyl, ethyl and propyl and R 3 and R 4 is phenyl.
9. The optical element of claim 1 wherein R1, R 2 , R 3 and R 4 are methyl.
10. The optical element of claim 1 wherein R 1 , R 2 , and R 3 are methyl and R 4 is phenyl.
11. The optical element of claim 1 wherein R 1 and R 2 are methyl and R 3 and R 4 are phenyl.
12. The optical element of claim 1 wherein the first polymer matrix is selected from the group consisting of polyacrylate, polymethacrylate, polyvinyl, polysiloxane and polyphosphazene.
13. The optical element of claim 1 further comprising a photoinitiator.
14. The optical element of claim 13 wherein the photoinitiator is 2,2-dimethyoxy-2-phenylacetophenone.
15. The optical element of claim 1 wherein the element is an intraocular lens.
16. The optical element of claim 1 wherein the element is a contact lens.
17. The optical element of claim 1 wherein the element is a data storage device.
18. An optical element comprising:
a first polymer matrix;
a refraction modulating composition;
the refraction modulating composition comprising monomers having the formula:
X—Y—X 1
wherein Y is:
wherein m and n are integers and R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen, alkyl, aryl and heteroaryl and X and X 1 independently have the formula:
wherein R 5 and R6 are selected from the group consisting of hydrogen, alkyl, aryl and heteroaryl and Z contains a photopolymerizable group.
19. The optical element of claim 18 further comprising a photoinitiator.
20. The optical element of claim 18 wherein said refraction modulating composition comprises a blend of monomers.
21. The optical element of claim 18 wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are selected from the group consisting of C 1 to C 10 alkyls and aryls.
22. The optical element of claim 18 wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are methyl.
23. The optical element of claim 18 wherein the first polymer matrix is selected from the group consisting of polyacrylate, polymethacrylate, polyvinyl, polysiloxane and polyphosphazene.
24. The method of claim 18 wherein R 1 , R 2 , R 3 , R 5 and R 6 are selected from the group consisting of methyl, ethyl and propyl and R 4 is phenyl.
25. The optical element of claim 18 wherein the photopolymerizable group is selected from the group consisting of acrylate, methacrylate, allyloxy, cinnamoyl, stibenyl and vinyl.