US 12,228,804 B2
Contact lenses and methods relating thereto
Martin Webber, Southampton (GB); Arthur Bradley, Bloomington, IN (US); Baskar Arumugam, Dublin, CA (US); David S. Hammond, Pleasanton, CA (US); and Paul Chamberlain, Livermore, CA (US)
Assigned to COOPERVISION INTERNATIONAL LIMITED, Fareham (GB)
Filed by CooperVision International Limited, Fareham (GB)
Filed on Dec. 15, 2022, as Appl. No. 18/081,718.
Claims priority of provisional application 63/291,993, filed on Dec. 21, 2021.
Prior Publication US 2023/0194896 A1, Jun. 22, 2023
Int. Cl. G02C 7/04 (2006.01); G02C 7/06 (2006.01)
CPC G02C 7/044 (2013.01) [G02C 7/049 (2013.01); G02C 7/066 (2013.01); G02C 2202/24 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A contact lens, the lens including an optic zone comprising:
a central region, the central region having a first optical axis, a base power, a centre of curvature that is on the first optical axis and a first radius of curvature; and
an annular region, wherein the annular region is tilted relative to the central region and has a radial curvature add power that is greater than the base power, wherein
light rays passing through the central region form a focused image at a distal focal surface, and light rays passing through the annular region do not form a spot of light at the distal focal surface; and
wherein there is an increase in radial sagittal power at a boundary between the central region and the annular region, and the radial sagittal power increases with increasing radial distance towards the outer edge of the annular region.