US 11,772,343 B2
Functionalized laminated optical element with improved edging resistance
Violaine Coue, Charenton-le-Pont (FR); Catherine Berger, Charenton-le-Pont (FR); Manuela Desousa, Charenton-le-Pont (FR); Tatsuya Suzuki, Osaka (JP); Katsuhiko Kamiya, Osaka (JP); Kiyoe Shigetomi, Osaka (JP); Shinji Hoshino, Osaka (JP); and Junichi Nakayama, Osaka (JP)
Assigned to Essilor International, Charenton-le-Pont (FR)
Appl. No. 16/89,143
Filed by ESSILOR INTERNATIONAL, Charenton-le-Pont (FR); and NITTO DENKO CORPORATION, Osaka (JP)
PCT Filed Mar. 29, 2016, PCT No. PCT/IB2016/000529
§ 371(c)(1), (2) Date Sep. 27, 2018,
PCT Pub. No. WO2017/168192, PCT Pub. Date Oct. 5, 2017.
Prior Publication US 2019/0111641 A1, Apr. 18, 2019
Int. Cl. B29D 11/00 (2006.01); B32B 7/12 (2006.01); G02B 1/14 (2015.01); G02B 1/10 (2015.01); G02B 1/11 (2015.01)
CPC B29D 11/0073 (2013.01) [B29D 11/00865 (2013.01); B32B 7/12 (2013.01); G02B 1/10 (2013.01); G02B 1/11 (2013.01); G02B 1/14 (2015.01)] 19 Claims
 
1. A functionalized laminated optical element comprising:
an optical base element;
a functional film structure consisting of a single layer or a multilayer structure; and
a layer of a pressure-sensitive adhesive of optical quality between one surface of the optical base element and the functional film structure to permanently retain the functional film structure on the surface of the optical base element:
wherein the pressure-sensitive adhesive layer comprises an acrylic polymer (A), has a storage modulus G′ of 1.0×105 Pa or greater and below 1.6×105 Pa at 85° C. and a dry peel strength and a wet peel force strength both above 20 N/25 mm, wherein the acrylic polymer (A) contains a hydroxyl group-containing monomer as a monomer unit, and 50% by weight or more of (meth)acrylic acid alkyl ester having a linear or branched-chain C1-20 alkyl group as a monomer unit, and wherein the optical base element is a finished lens, a semi-finished lens, a progressive addition lens, an afocal lens, a plano lens, a unifocal lens, and/or a multifocal lens, wherein the pressure-sensitive adhesive layer has a thickness in the range of 40 μm to 150 μm inclusive.