公开(公告)号：US20230165674A1

公开(公告)日：2023-06-01

申请号：US18055656

申请日：2022-11-15

Applicant: Alcon Inc.

Inventor： Shinwook Lee ,  Xin Hong ,  Myoung-Taek Choi ,  Zhiguang Xu

IPC: A61F2/16

CPC classification number: A61F2/1635 ,  A61F2/1648 ,  A61F2/1694 ,  A61F2002/1682 ,  A61F2002/16901 ,  A61F2210/0014 ,  A61F2250/0003

Abstract: A multi-layer intraocular lens (IOL) includes a lens body, including an anterior diffractive optics layer, comprising a first biocompatible material, and a posterior diffractive optics layer, comprising a second biocompatible material that is different from the first biocompatible material. The anterior diffractive optics layer and the posterior diffractive optics layer are sealed in a peripheral non-optic portion of the lens body with a gap between the anterior diffractive optics layer and the posterior diffractive optics layer.

公开(公告)号：US20250099230A1

公开(公告)日：2025-03-27

申请号：US18897752

申请日：2024-09-26

Applicant: Alcon Inc.

Inventor： Wei Lu ,  Myoung-Taek Choi ,  Zhiguang Xu ,  Sangyeol Lee ,  Shinwook Lee ,  Daniel R. Carson

IPC: A61F2/16

Abstract: Provided in this document are examples of a multifocal ophthalmic lens. The lens includes a base lens having a base curvature corresponding to a base power; and a diffractive structure comprising a plurality of annular echelettes formed on a first surface of the base lens. The diffractive structure is configured to produce a zero-order diffraction corresponding to a distance vision focal point determined by the base power, the diffraction efficiency of the zero-order diffraction between 45% and 55%; a first-order diffraction having a diffraction efficiency between 5% and 10%; a second-order diffraction corresponding to an intermediate vision focal point, the diffraction efficiency between 15% and 20%; and a third-order diffraction corresponding to a near vision focal point, the diffraction efficiency between 15% and 25%. The diffractive structure includes a plurality of annular diffractive steps, each defined by a profile having a curved slope and a peak.