Ophthalmic lens with multiple phase plates
First Claim
1. An ophthalmic lens, comprising:
- an optic having an anterior surface, a posterior surface, and an optical axis, the optic comprising;
a first region having a first refractive optical power and comprising a first base curvature having a finite first radius of curvature and a first phase plate having at least one diffraction order with a diffractive optical power, the first region configured for forming a first focus and a second focus; and
a second region having a second refractive optical power and comprising a second base curvature having a finite second radius of curvature that is different from the first radius of curvature and a second phase plate having at least one diffraction order with a diffractive optical power, the second region configured for forming a third focus that is between the first focus and the second focus.
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Abstract
An ophthalmic lens for providing a plurality of foci includes an optic having an anterior surface, a posterior surface, and an optical axis. The ophthalmic lens has a first region and a second region. The first region has a first refractive optical power and includes a first base curvature having a finite first radius of curvature and a first phase plate having at least one diffraction order with a diffractive optical power. The first region is configured for forming a first focus and a second focus. The second region has a second refractive optical power and includes a second base curvature having a finite second radius of curvature that is different from the first radius of curvature and a second phase plate having at least one diffraction order with a diffractive optical power. The second region is configured for forming a third focus that is between the first focus and the second focus. The ophthalmic lens may be configured so the first focus provides distant vision, the second focus provides near vision, and the third focus provides intermediate vision.
182 Citations
11 Claims
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1. An ophthalmic lens, comprising:
an optic having an anterior surface, a posterior surface, and an optical axis, the optic comprising; a first region having a first refractive optical power and comprising a first base curvature having a finite first radius of curvature and a first phase plate having at least one diffraction order with a diffractive optical power, the first region configured for forming a first focus and a second focus; and a second region having a second refractive optical power and comprising a second base curvature having a finite second radius of curvature that is different from the first radius of curvature and a second phase plate having at least one diffraction order with a diffractive optical power, the second region configured for forming a third focus that is between the first focus and the second focus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
Specification