Methods and lenses for correction of chromatic aberration
View Patent ↗The subject invention provides lenses, and methods for designing and manufacturing these lenses, with reduced chromatic aberration. Advantageously, these lenses are specifically designed to correct chromatic aberration that results as multichromatic light passes through the lenses.
1. A composite ophthalmic lens, comprising:
a first sublens;
a second sublens; and
a compensation layer between the first sublens and the second sublens, wherein the compensation layer is in contact with a first surface of the first sublens, wherein the compensation layer is in contact with a second surface of the second sublens, wherein the compensation layer comprises a cured polymer matrix selected to increase the overall effective Abbe value of the composite lens as compared to the first and second sublens, and wherein the effective Abbe number of the composite lens varies from the optical center of the composite lens to an outer region of the composite lens.
2. The composite lens according to claim 1 , wherein the compensation layer comprises a thickness variation between the optical center of the composite lens and outer regions of the composite lens.
3. The composite lens according to claim 2 , wherein a combination of the first sublens first surface's curvature and the second sublens second surface's curvature control the thickness variation of the compensation layer.
4. The composite lens according to claim 1 , wherein the compensation layer has a higher index of refraction than the first sublens.
5. The composite lens according to claim 4 , wherein the compensation layer has a higher index of refraction than the second sublens.
6. The composite lens according to claim 1 , wherein the effective Abbe number of the composite lens increases from the optical center of the composite lens to the outer region of the composite lens.
7. The composite lens according to claim 1 , wherein the compensation layer comprises a polymeric material.
8. The composite lens according to claim 7 , wherein both of the first sublens and second sublens comprise a material having a higher index of refraction than the polymeric material.
9. The composite lens according to claim 1 , wherein the compensation layer comprises an Abbe number smaller than the Abbe number of the first sublens.
10. The composite lens according to claim 1 , wherein the compensation layer comprises a power having an opposite power from the power of the combination of the first sublens and the second sublens.
11. The composite lens according to claim 10 , wherein the compensation layer has a positive power.
12. The composite lens according to claim 1 , wherein the composite lens has a negative power.
13. The composite lens according to claim 12 , wherein the compensation layer is thicker near the optical center of the composite lens than at outer regions of the composite lens.
14. The composite lens according to claim 1 , wherein the composite lens has a positive power.
15. The composite lens according to claim 14 , wherein the compensation layer is thinner near the optical center of the lens than at outer regions of the composite lens.
16. A composite ophthalmic lens, comprising:
a first sublens;
a second sublens; and
a compensation layer between the first sublens and the second sublens, wherein the compensation layer is in contact with a first surface of the first sublens, wherein the compensation layer is in contact with a second surface of the second sublens, wherein the compensation layer is a polymer matrix that results in an effective Abbe number of the composite lens that is higher than the Abbe number of the first sublens and second sublens over at least a portion of the lens, wherein chromatic aberration is reduced due to the incorporation of the compensation layer, and wherein the effective Abbe number of the composite lens varies from the optical center of the composite lens to an outer region of the composite lens.
17. The composite ophthalmic lens according to claim 16 , wherein the effective Abbe number of the composite lens increases from the optical center of the lens to an outer region of the lens.
18. The composite ophthalmic lens according to claim 16 , wherein the compensation layer comprises a thickness variation between the optical center of the composite lens and outer regions of the composite lens.
19. The composite ophthalmic lens according to claim 16 , wherein the effective Abbe number of the composite lens varies from the optical center of the composite lens to an outer region of the composite lens.
20. The composite ophthalmic lens according to claim 19 , wherein the effective Abbe number of the composite lens increases from the optical center of the composite lens to the outer region of the composite lens.
21. The composite ophthalmic lens according to claim 16 , wherein the compensation layer comprises an Abbe number smaller than the Abbe number of the first sublens.
22. The composite ophthalmic lens according to claim 16 , wherein the compensation layer comprises an opposite power from the power of the combination of the first sublens and the second sublens.
23. The composite ophthalmic lens according to claim 16 , wherein the compensation layer has a higher index of refraction than the first sublens.