US 12,109,769 B2
Method for manufacturing spectacle lenses according to a prescription
Ralf Meschenmoser, Essingen (DE); and Michael Pittolo, Glenelg (AU)
Assigned to Carl Zeiss Vision International GmbH, Aalen (DE)
Filed by Carl Zeiss Vision International GmbH, Aalen (DE)
Filed on Sep. 22, 2020, as Appl. No. 17/028,413.
Application 17/028,413 is a continuation of application No. PCT/EP2019/000089, filed on Mar. 23, 2019.
Claims priority of application No. 18163650 (EP), filed on Mar. 23, 2018.
Prior Publication US 2021/0001579 A1, Jan. 7, 2021
Int. Cl. B29D 11/00 (2006.01); B24B 13/005 (2006.01)
CPC B29D 11/00009 (2013.01) [B24B 13/0055 (2013.01); B24B 13/0057 (2013.01); B29D 11/00865 (2013.01); B29D 11/00942 (2013.01); B29D 11/00596 (2013.01); B29D 11/00644 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for manufacturing a spectacle lens according to a prescription, the method comprising:
providing a semi-finished spectacle lens blank having a first face possessing a final curvature, the first face being coated with a permanent top coating, and a second face opposite the first face;
performing one of:
blocking the first face being coated with the permanent top coating by mounting the semi-finished spectacle lens blank on a block piece such that the first face of the semi-finished spectacle lens blank faces the block piece; or
fixing the semi-finished spectacle lens blank on a vacuum chuck or a holding chuck such that the first face of the semi-finished spectacle lens blank faces the vacuum chuck or the holding chuck;
surfacing the blocked semi-finished spectacle lens blank or the fixed semi-finished spectacle lens blank on the second face to obtain a surfaced spectacle lens blank having a final curvature of the second face;
deblocking the surfaced spectacle lens blank from the block piece or removing the surfaced spectacle lens blank from the vacuum chuck or the holding chuck prior to a subsequent coating step of the second face; and
providing an outer surface of the first face being coated with the permanent top coating of the finished spectacle lens ready for use for a spectacles wearer and having a surface energy of less than 20 mJ/m2.