Johnson and Johnson Vision Care, Inc.

Innotech Corporation

Mitsui Chemicals, Inc.

Johnson & Johnson Vision Products Inc.

Pixeloptics, Inc.

Essilor International

William Kokonaski

Edgar V Menezes

Ronald D Blum

Venkatramani S Iyer

Amitava Gupta

Joshua N Haddock

Mark Mattison-Shupnick

James S Merritt

Daniel Katzman

Embodiments of the present invention relate to a multifocal lens having a diffractive optical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens.

Multifocal lens having a progressive optical power region and a discontinuity

The invention provides progressive addition lenses designed for uses in which a large region of intermediate refractive power is desirable. The enlarged intermediate region is provided without partial or complete elimination of the distance vision zone.

Customized progressive addition lenses

The invention provides progressive addition lenses in which unwanted lens astigmatism is reduced and channel width is increased. The astigmatism reduction and channel width increase are achieved without functional compromise of the distance and reading zone widths, as compared to conventional progressive addition lenses.

Progressive addition lenses

The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved by combining two or more progressive addition surfaces, which surfaces in combination provide the dioptric add power of the lens.

Methods for producing progressive addition lenses

The present provides progressive addition lens designs and lenses in which unwanted lens astigmatism is reduced as compared to conventional progressive addition lenses.

A resin is provided comprising a mixture of at least two polymerizable components, at least one photochromic additive, at least one additive and at least one polymerization initiator. The mixture of at least two polymerizable components is preferably selected from monofunctional, difunctional and multifunctional acrylates and methacrylates. The photochromic additive is preferably selected from spirooxazine additives and spiropyran additives. And the additive is preferably selected from antioxidants, radical scavengers and ultraviolet absorbers.

Growing community of inventors

Roanoke, VA, United States of America

William Kokonaski