Spectacle lens comprising at least one ultrathin lens and process for production thereof

Patent metadata

Field	Value
Publication number	US-11921359-B2
Application number	US-201916392760-A
Country	US
Kind code	B2
Filing date	Apr 24, 2019
Priority date	Apr 24, 2018
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

A spectacle lens includes 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. The component A includes an ultrathin lens, the component B includes at least one of a polymeric material or a mineral glass, and the component C includes at least one of a functional layer or an ultrathin lens. The spectacle lens has no damage after impact of a steel ball with a diameter of 15.87 mm and a weight of 16.36 g from a height of 1.27 m.

First claim

The invention claimed is:

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.

2. The process for producing the spectacle lens as claimed in claim 1 , further comprising at least one of:
providing the ultrathin lens of the component C as the formed ultrathin lens;
coating a reverse face of the ultrathin lens of the component A with the functional layer;
coating a front face of the ultrathin lens of the component C with the functional layer;
coating the front face of the finished spectacle lens with the functional layer and the reverse face of the finished spectacle lens with the functional layer;
bonding the coated reverse face of the component A to the coated front face of the component B and bonding the coated reverse face to the coated front face of the ultrathin lens of component C; and
coating the front face of the ultrathin lens of the component A with the functional layer and coating the reverse face of the ultrathin lens of the component C with the functional layer.

3. The process as claimed in claim 1 , wherein the components A, B, and C are bonded with an adhesive, by a thermal treatment, or by contact bonding.

4. The process as claimed in claim 1 , wherein the components A, B, and C are bonded to one another with an adhesive based on an amine-catalyzed thiol hardening of an epoxy resin at a temperature within a range of from 20° C. to 80° C.

5. The process as claimed in claim 1 , wherein the ultrathin lens has an average thickness within a range of from 90 μm to 120 μm.

6. The process as claimed in claim 2 , wherein the reverse face of the ultrathin lens of the component A is coated with at least one functional layer, and wherein the at least one functional layer is selected from the group consisting of a coloring layer, a photochromic layer, a polarizing layer, or a reflection layer.

7. The process as claimed in claim 1 , wherein at least one of the front face of the ultrathin lens of the component A or the reverse face of the ultrathin lens of the component C is coated with at least one functional layer, and wherein the at least one functional layer is selected from the group consisting of an antireflection layer, an electrically conductive layer, a semiconductive layer, an antifog layer, and a clean-coat layer.

8. The process as claimed in claim 1 , further comprising:
providing the ultrathin lens of component A and the ultrathin lens of component C as the formed ultrathin lens.

9. The process as claimed in claim 1 , wherein a surface topography of the components A, B, and C is in each case selected from the group consisting of planar, spherical, aspherical, toric, and atoric,
wherein the surface topography of a respective front face and a respective reverse face of the components A and C is a same,
wherein the surface topography of the component A is the same as or different than the surface topography of the component C, and
wherein the surface topography of the component A is the same as or different than the surface topography of the front face of the component B, and the surface topography of the component C is the same as or different than the surface topography of the reverse face of the component B.

10. 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 includes an ultrathin lens, wherein the component B includes at least one of a polymeric material or a mineral glass, and wherein the component C includes a functional layer, 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;
flame treating an edge region of the ultrathin lens of the component A;
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 the front face of the component B;
bonding the reverse face of the component A to the front face of the component B and coating the reverse face of the component B with the functional layer of the component C; and
edging the spectacle lens including the components A, B, and C,
wherein the ultrathin lens of the component A is based on a glass composition, 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.

11. The process for producing the spectacle lens as claimed in claim 10 , further comprising at least one of:
coating a reverse face of the ultrathin lens of the component A with a functional layer;
coating the front face of the finished spectacle lens with the functional layer and the reverse face of the finished spectacle lens with the functional layer; and
bonding the coated reverse face of the component A to the coated front face of the component B.

12. The process as claimed in claim 10 , wherein the functional layer of the component C is selected from the group consisting of a coloring layer, a photochromic layer, a polarizing layer, or a reflection layer.

13. The process as claimed in claim 10 , wherein the ultrathin lens has an average thickness within a range of from 90 μm to 120 μm.

14. The process as claimed in claim 10 , wherein the reverse face of the ultrathin lens of the com

Assignees

• Zeiss Carl Vision Int Gmbh

Inventors

• Glöge Thomas
• Gromotka Jeremias

Classifications

• B29D11/00009

  Production of simple or compound lenses · CPC title

• G02C7/02 Primary

  Lenses; Lens systems {; Methods of designing lenses} · CPC title

• B24B9/14

  of optical work, e.g. lenses, prisms {(control of the position of the tool for bevelling optical work B24B47/225)} · CPC title

• B29D11/00403

  Producing compound lenses · CPC title

• B29D11/0073

  Optical laminates · CPC title