Ophthalmic lens with multiple phase plates

Details Ophthalmic lens with multiple phase plates Ophthalmic lens with multiple phase plates

2007-03-13

2007-03-13

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C623S006300

Reexamination Certificate

active

11259524

ABSTRACT:
An ophthalmic lens for providing a plurality of foci has an optic comprising an anterior surface, a posterior surface, and an optical axis. The optic has a first region and a second region. The first region has a refractive optical power and comprises a multifocal phase plate for forming a first focus and a second focus. The second region has a refractive optical power and comprises a monofocal phase plate for forming a third focus. The multifocal phase plate and the monofocal phase plate may be disposed on first and second base curvatures, respectively, that may have different radii of curvature. The ophthalmic lens may also have an intermediate phase plate located between the multifocal phase plate and the monofocal phase plate, the intermediate phase plate comprising a third plurality of echelettes disposed on a third base curvature having a third radius of curvature.

REFERENCES:
patent: 4881804 (1989-11-01), Cohen
patent: 5054905 (1991-10-01), Cohen et al.
patent: 5056908 (1991-10-01), Cohen et al.
patent: 5344447 (1994-09-01), Swanson
patent: 5699142 (1997-12-01), Lee et al.
patent: 0 355 230 (1990-02-01), None
patent: 0 412 751 (1991-02-01), None

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