Patent ID: 11921359
Assignee: CARL ZEISS VISION INTERNATIONAL GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A process for producing a spectacle lens including, proceeding from a front face on the object side of the spectacle lens to an opposite reverse face of the spectacle lens, at least components A, B, and C, wherein the component A and the component C include an ultrathin lens, wherein the component B includes at least one of a polymeric material or a mineral glass, wherein the ultrathin lens has an average thickness within a range of from 90 μm to 210 μm, wherein the spectacle lens has a middle thickness within a range of from 0.34 mm to 2.22 mm, and wherein the spectacle lens has no damage after impact of a steel ball of a size of 15.87 mm and a weight of 16.36 g from a height of 1.27 m, the process comprising:
providing the ultrathin lens of the component A as a formed ultrathin lens;
providing the ultrathin lens of the component C;
flame treating an edge region of the formed ultrathin lens of the component A and the ultrathin lens of the component C;
providing a finished spectacle lens of the component B including the at least one of the polymeric material or the mineral glass;
optionally, forming a functional layer on at least one of the front face or the reverse face of the component B;
bonding the reverse face of the component A to the front face of the component B and bonding the reverse face of the component B to the front face of the ultrathin lens of the component C; and
edging the spectacle lens including the components A, B, and C,
wherein the ultrathin lens of the component A and the ultrathin lens of the component C are based on a glass composition,
wherein the glass composition of the component A is identical or different from the glass composition of the component C, and
wherein the finished spectacle lens of the component B is a monofocal spectacle lens, a multifocal spectacle lens, a bifocal spectacle lens, a trifocal spectacle lens, a varifocal spectacle lens, or a degressive spectacle lens.