Materials and methods for producing lenses
View Patent ↗The subject invention provides methods for creating wavefront aberrators with a desired refractive index profile that is stable against thermal and/or solar exposure. The invention further provides wavefront aberrators produced according to the methods described herein.
1. A wavefront aberrator that has a stable variable refractive index profile and a stable optical path difference (OPD), wherein the wavefront aberrator comprises:
a first transparent plate;
a second transparent plate; and
a layer of polymerizable material comprising one or more monomers, wherein the layer of polymerizable material is positioned between the first transparent plate and the second transparent plate and wherein the polymerizable material has a stable final variable refractive index profile and a stable final OPD created by a method comprising:
a. providing a variable photo-stimulus to the polymerizable material having an initial refractive index to cause the polymerizable material to (i) undergo a variable pattern of polymerization without completely depleting the one or more monomers and (ii) attain a first intermediate variable refractive index profile and an OPD that provides Zernike polynomial terms harmonic to the Zernike polynomial terms provided by the stable variable refractive index profile of the wavefront aberrator;
b. promoting a diffusion process within the polymerizable material provided in step (a) to cause diffusion of uncured monomer from lesser cured regions to higher cured regions to attain a second intermediate variable refractive index profile; and
c. simultaneously providing a thermal stimulus and a uniform photo-stimulus to the polymerizable material provided in step (b) to cure one or more remaining one or more uncured regions of the polymerizable material to attain the stable final variable refractive index profile and the stable final OPD.
2. The wavefront aberrator of claim 1 , wherein step (a) further comprises simultaneously providing a thermal stimulus to the polymerizable material.
3. The wavefront aberrator of claim 1 , wherein the stable final OPD is more than 0.01 microns.
4. The wavefront aberrator of claim 1 , wherein the stable final OPD is more than 3 microns.
5. The wavefront aberrator of claim 1 , wherein the stable final OPD is more than 10 microns.
6. The wavefront aberrator of claim 1 , wherein the stable final OPD is more than 50 microns.
7. The wavefront aberrator of claim 1 , wherein the stable final OPD is more than 100 microns.
8. The wavefront aberrator of claim 1 , wherein the wavefront aberrator is a lens for eyeglasses or contact lens.
9. The wavefront aberrator of claim 1 , wherein the polymerizable material comprises a thiol-cured epoxy.
10. The wavefront aberrator of claim 1 , wherein the diffusion process is promoted by heating the polymerizable material to at least 85° C.
11. The wavefront aberrator of claim 1 , wherein the OPD after the diffusion process is at least twice the OPD before the diffusion process.
12. The wavefront aberrator of claim 2 , wherein the stable final OPD is more than 0.01 microns.
13. The wavefront aberrator of claim 2 , wherein the stable final OPD is more than 3 microns.
14. The wavefront aberrator of claim 2 , wherein the stable final OPD is more than 10 microns.
15. The wavefront aberrator of claim 2 , wherein the stable final OPD is more than 50 microns.
16. The wavefront aberrator of claim 2 , wherein the stable final OPD is more than 100 microns.
17. The wavefront aberrator of claim 2 , wherein the wavefront aberrator is a lens for eyeglasses or contact lens.
18. The wavefront aberrator of claim 2 , wherein the polymerizable material comprises a thiol-cured epoxy.
19. The wavefront aberrator of claim 2 , wherein the diffusion process is promoted by heating the polymerizable material to at least 85° C.
20. The wavefront aberrator of claim 2 , wherein the OPD after the diffusion process is at least twice the OPD before the diffusion process.