US 12,228,805 B2
Multifocal ophthalmic lens and related methods
Martin Webber, Southampton (GB)
Assigned to COOPERVISION INTERNATIONAL LIMITED, Fareham (GB)
Filed by CooperVision International Limited, Fareham (GB)
Filed on Jul. 28, 2023, as Appl. No. 18/227,328.
Application 18/227,328 is a continuation of application No. 17/228,752, filed on Apr. 13, 2021, granted, now 11,754,858.
Claims priority of provisional application 63/017,931, filed on Apr. 30, 2020.
Prior Publication US 2023/0367140 A1, Nov. 16, 2023
Int. Cl. G02C 7/04 (2006.01); G02C 7/02 (2006.01)
CPC G02C 7/044 (2013.01) [G02C 7/027 (2013.01); G02C 2202/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multifocal ophthalmic lens wherein:
a first surface of the lens varies across at least a portion of the lens to form a first surface power map;
the first surface power map comprises a spiral, with a power that varies substantially periodically both radially outwards from and angularly about an optical axis of the lens, wherein the radial variation has a period that is substantially constant across the portion and that is greater than 100 microns.