US 12,072,559 B2
Electrically-controlled optical device with a front shell
Hélène Guillou, Charenton-le-Pont (FR); Claudine Biver, Charenton-le-Pont (FR); Sira Uhalte Nogues, Charenton-le-Pont (FR); David Escaich, Charenton-le-Pont (FR); and Masaaki Imura, Ostu (JP)
Assigned to Essilor International, Charenton-le-Pont (FR)
Appl. No. 16/972,799
Filed by Essilor International, Charenton-le-Pont (FR)
PCT Filed Jun. 7, 2019, PCT No. PCT/EP2019/065032
§ 371(c)(1), (2) Date Dec. 7, 2020,
PCT Pub. No. WO2019/238585, PCT Pub. Date Dec. 19, 2019.
Claims priority of application No. 18305733 (EP), filed on Jun. 15, 2018.
Prior Publication US 2021/0247628 A1, Aug. 12, 2021
Int. Cl. G02C 7/10 (2006.01); B29D 11/00 (2006.01); C23C 14/34 (2006.01); G02C 7/02 (2006.01)
CPC G02C 7/101 (2013.01) [B29D 11/00038 (2013.01); C23C 14/34 (2013.01); G02C 7/022 (2013.01); G02C 2202/16 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electrically-controlled optical device to be placed in front of a user's eye, the electrically-controlled optical device being an ophthalmic device, the electrically-controlled optical device comprising:
a front shell defining a front surface and a back surface opposed to the front surface, the front shell comprising a slab, at least one functional layer arranged on the back surface and one primer layer, said primer layer being arranged between the at least one functional layer and the slab; and
an electrically-controlled object facing the back surface of the front shell,
wherein the primer layer is conformed such that the electrically-controlled optical device is mechanically resistant to an impact energy of at least 200 mJ, and
wherein the primer layer is configured to form a refractive index adaptive layer.