LENS SURFACE WITH COMBINED DIFFRACTIVE, TORIC, AND ASPHERIC COMPONENTS

• Main Authors: MORGANEW, HONG, XIN
• Format: Patent
• Language: English; French
• Published: 09.07.2009
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CONTACT LENSES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PHYSICS; PROSTHESES; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TREATMENT OR PROTECTION OF EYES OR EARS

In one aspect, the present invention provides an intraocular lens (IOL) that includes an optic comprising an anterior surface, a posterior surface, and a plurality of diffractive zones disposed on one of those surfaces. The surface having the diffractive zones has a profile characterized by a combination of aspheric and toric components. L'invention concerne, selon un premier aspect, une lentille intraoculaire (IOL) qui comprend un élément optique comportant une surface antérieure, une surface postérieure et une pluralité de zones diffractives disposées sur une de ces surfaces. La surface ayant les zones diffractives présente un profil caractérisé par une combinaison de composants asphériques et toriques.