US 12,332,406 B2
Hydrophilic-like sputtered AR coating
Michael Marshall, Andover, MN (US); and Jeffrey Brown, St. Louis Park, MN (US)
Assigned to HOYA Optical Labs Of America, Inc., Lewisville, TX (US)
Filed by HOYA Optical Labs of America, Inc., Lewisville, TX (US)
Filed on Apr. 8, 2024, as Appl. No. 18/629,763.
Application 18/629,763 is a continuation of application No. 16/927,830, filed on Jul. 13, 2020, granted, now 11,960,057.
Claims priority of provisional application 62/873,779, filed on Jul. 12, 2019.
Prior Publication US 2024/0288609 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 1/115 (2015.01); G02B 1/18 (2015.01)
CPC G02B 1/115 (2013.01) [G02B 1/18 (2015.01)] 16 Claims
OG exemplary drawing
 
1. An ophthalmic article, comprising:
a substrate having a top surface;
a plurality of alternating a low refractive index layer and a high refractive index layer deposited on the top surface;
wherein the high refractive index layer comprises a) at least one metal oxynitride layer, or b) at least one metal oxynitride layer and a metal oxide layer; and
wherein the at least one metal oxynitride layer comprising a zirconium oxynitride layer or a titanium oxynitride layer is positioned between two low refractive index layers to provide a surface free energy to the ophthalmic article in a range of about 50-70 mN/m for a prolonged period.