Extended depth of focus (EDOF) lens to increase pseudo-accommodation by utilizing pupil dynamics

US8241354B2 · kind B2 · utility

Assignee

• Novartis AG · CH

Inventors

• Xin Hong · Arlington, US
• Mutlu Karakelle · Fort Worth, US
• Xiaoxiao Zhang · Fort Worth, US
• Michael J. Simpson · Toronto, CA
• Myoung-Taek Choi · Arlington, US
• Yan Zhang · Baden, CH

Key dates

• Filing date: Jul 15, 2009
• Grant date: Aug 14, 2012
• Expiry date: Feb 6, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/042
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In one aspect, the present invention provides an ophthalmic lens (e.g., an IOL) that includes an optic having an anterior surface and a posterior surface disposed about an optical axis. At least one of the surfaces (e.g., the anterior surface) has a profile characterized by superposition of a base profile and an auxiliary profile. The auxiliary profile can include an inner region, an outer region and a transition region between the inner and the outer regions, where an optical path difference across the transition region (i.e., the optical path difference between the inner and the outer radial boundaries of the transition region) corresponds to a non-integer fraction (e.g., ½) of a design wavelength (e.g., a wavelength of about 550 nm).