Eyeglass manufacturing method using variable index layer
View Patent ↗An eyeglass lens and manufacturing method using epoxy aberrator includes two lenses with a variable index material, such as epoxy, sandwiched in between. The epoxy is then cured to different indexes of refraction that provide precise corrections for the patient's wavefront aberrations. The present invention further provides a method to produce an eyeglass that corrects higher order aberrations, such as those that occur when retinal tissue is damaged due to glaucoma or macular degeneration. The manufacturing method allows for many different applications including, but not limited to, supervision and transition lenses.
1. An eyeglass lens, comprising:
a first layer comprising a first lens of substantially uniform thickness, the lens having a constant index of refraction;
a second layer comprising a material having an index of refraction that can be changed by exposure to curing radiation; and
a third layer comprising a second lens, the second layer being sandwiched between the first layer and the third layer;
wherein the first and third layers are configured to substantially correct at least a first aberration of a patient's eye, wherein the first aberration of the patient's eye is a lower order aberration, wherein the lower order aberrations is selected from the group consisting of spherical aberration and cylindrical aberration, and the second layer is configured to substantially correct at least a second aberration of the patient's eye, wherein the second aberration of the patient's eye is a higher order aberration, wherein a higher order aberration comprises at least one selected from the group consisting of coma, trefoil, quadrafoil, spherical aberration, and secondary astigmatism.
2. The eyeglass lens of claim 1 wherein the second layer comprises a super-vision zone, wherein the super vision zone is configured to correct at least one higher order aberration of the patient's eye.
3. The eyeglass lens of claim 2 wherein the second layer further comprises a normal vision zone and a transition zone, wherein the normal vision zone does not correct higher order aberrations of the patient's eye, and wherein the transition zone is configured to provide a smooth transition between the normal vision zone and the supervision zone.
4. The eyeglass lens of claim 1 wherein the eyeglass lens is a progressive addition lens.
5. The eyeglass lens of claim 4 wherein the second layer comprises a short distance viewing zone.
6. The eyeglass lens of claim 4 wherein the first aberration of the patient's eye is a lower order aberration.
7. The-eyeglass lens of claim 6 wherein the second layer comprises a short distance viewing zone.
8. The eyeglass lens of claim 7 wherein the second layer further comprises a super-vision zone.
9. The eyeglass lens of claim 1 wherein the eyeglass lens is a reading lens comprising a normal vision zone and a super-vision zone.
10. The eyeglass lens of claim 1 wherein the first lens is a lens blank.
11. The eyeglass lens of claim 1 wherein the second lens is a lens blank.
12. An eyeglass lens, comprising:
a first layer comprising a first lens of substantially uniform thickness, the lens having a constant index of refraction;
a second layer comprising a material having an index of refraction that can be changed by exposure to curing radiation; and
a third layer comprising a second lens, the second layer being sandwiched between the first layer and the third layer;
wherein the first and third layers are configured to correct a first portion of an aberration of a patient's eye to within 0.25 diopters, and
the second layer is configured to correct a second portion of the aberration of the patient's eye, wherein the second portion of the aberration of the patient's eye is a higher order aberration, wherein a higher order aberration comprises at least one selected from the group consisting of coma, trefoil, quadrafoil, spherical aberration, and secondary astigmatism.
13. The eyeglass lens of claim 12 wherein the first lens is a lens blank.
14. The eyeglass lens of claim 12 wherein the second lens is a lens blank.
15. An eyeglass lens, comprising:
a first layer comprising a lens of substantially uniform thickness, the lens having a constant index of refraction;
a second layer comprising a material having an index of refraction that can be changed by exposure to curing radiation; and
a third layer comprising a lens, the second layer being sandwiched between the first layer and the third layer;
wherein the first and third layers are configured to substantially correct at least a first aberration of a patient's eye, and the second layer is configured to substantially correct at least a second aberration of the patient's eye, wherein the second aberration comprises at least one selected from the group consisting of coma, trefoil, quadrafoil, spherical aberration, and secondary astigmatism.
16. An eyeglass lens, comprising:
a first layer comprising a lens of substantially uniform thickness, the lens having a constant index of refraction; and
a second layer comprising a material having an index of refraction that can be changed by exposure to curing radiation; and
a third layer comprising a lens, the second layer being sandwiched between the first layer and the third layer;
wherein the first and third layers being configured to correct a first portion of an aberration of a patient's eye, and the second layer is configured to correct a second portion of the aberration of the patient's eye wherein the second portion of the aberration of the patient's eye is a higher order aberration, wherein a higher order aberration comprises at least one selected from the group consisting of coma, trefoil, quadrafoil, spherical aberration, and secondary astigmatism.