METHOD OF PRODUCING A SPECTACLE LENS AND PRODUCT COMPRISING A SPECTACLE LENS

Abstract

A method of producing a spectacle lens includes providing a substrate having a front surface and a back surface and coating or covering at least one of the front surface or the back surface of the substrate, in full or in part, with a layer. The surface topography of the substrate surface is changed by bringing the surface into contact with a medium and the medium is removed. A product made according to the method and including (i) a spectacle lens or (ii) a representation of the spectacle lens in the form of computer-readable data present on a data medium or (iii) a data medium including a virtual representation of the spectacle lens in the form of computer-readable data or (iv) a representation of the spectacle lens in the form of a computer-readable data signal, is also disclosed.

Claims

1. A method of producing a spectacle lens having a substrate and at least one coating, the method comprising at least the following steps in the order given below: providing at least a substrate with a front surface and a back surface; coating or covering at least one of the front surface or the back surface of the substrate, in full or in part, with at least one layer, a surface topography of the at least one layer being able to be changed as a result of being brought into contact with at least one medium; bringing at least some of the surface of the at least one layer into contact with the at least one medium; and removing the at least one medium.

2. The method as claimed in claim 1, wherein the surface topography is changed locally or over a whole area.

3. The method as claimed in claim 1, wherein the change of the surface topography is a positive change of the surface topography.

4. The method as claimed in claim 1, wherein before the at least one layer is brought into contact with the at least one medium, the surface of the at least one layer is covered by at least one masking means.

5. The method as claimed in claim 4, wherein the at least one masking means is selected from the group consisting of at least one pressure-sensitive adhesive, at least one adhesive means, at least one coating, at least one photoresist, and at least one film.

6. The method as claimed in claim 4, wherein the at least one masking means comprises at least one coating which is identical to, or different from, the at least one layer whose surface topography can be changed by being brought into contact with at least one medium.

7. The method as claimed in claim 6, wherein the same at least one layer may have an identical or a different layer thickness.

8. The method as claimed in claim 6, wherein the same at least one layer may have a different chemical composition.

9. The method as claimed in claim 1, wherein the at least one layer is applied with an inkjet method.

10. The method as claimed in claim 1, wherein the at least one medium is applied with an inkjet method.

11. The method as claimed in claim 1, wherein the same at least one layer whose surface topography can be changed by being brought into contact with at least one medium is brought into contact with an identical medium and/or with a different medium.

12. The method as claimed in claim 1, wherein following the removal of the medium, the topographically changed surface of the at least one layer is covered by at least one further layer, the at least one further layer—in terms of its chemical composition—being identical to, or different from, the at least one layer whose surface topography was changed.

13. A product, comprising: (i) a spectacle lens; or (ii) a spectacle lens and instructions for using the spectacle lens; or (iii) a representation of the spectacle lens in the form of computer-readable data located on a data medium; or (iv) a representation of the spectacle lens in the form of computer-readable data located on a data medium and instructions for using the spectacle lens; or (v) a data medium with a virtual representation of the spectacle lens in the form of computer-readable data; or (vi) a data medium with a virtual representation of the spectacle lens in the form of computer-readable data and instructions for using the spectacle lens; or (vii) a representation of the spectacle lens in the form of a computer-readable data signal; or (viii) a representation of the spectacle lens in the form of a computer-readable data signal and instructions for using the spectacle lens, wherein in each case: the spectacle lens has a substrate with a front surface and a back surface, the front surface of the substrate has a spherical surface geometry, an aspherical surface geometry, a toric surface geometry, an atoric surface geometry, a plane surface geometry, or a free-form surface geometry, the back surface of the substrate has a spherical surface geometry, an aspherical surface geometry, a toric surface geometry, an atoric surface geometry, a plane surface geometry. or a free-form surface geometry, the front surface and/or the back surface of the substrate has at least one layer, in each case at least in part or in each case over the whole area, the surface topography of the layer being identical to, or different from, the surface geometry of the respective surface of the substrate and experiencing a targeted change in its surface topography by bringing into contact with at least one medium such that: the spectacle lens satisfies at least one of the following optical requirements: (1) no dioptric power, (2) for a finished single-vision lens or for a finished multifocal lens: a prescribed dioptric power is within the tolerances for the back vertex power pursuant to DIN EN ISO 8980-1:2017-12, section 5.2.2, in particular section 5.2.2, table 1, within the tolerances for the direction of the cylinder axis pursuant to DIN EN ISO 8980-1:2017-12, section 5.2.3, in particular section 5.2.3, table 2, within the tolerances for the addition power for multifocal lenses pursuant to DIN EN ISO 8980-1:2017-12, section 5.2.4, in particular pursuant to section 5.2.4, table 3, and within the tolerances for the prismatic power pursuant to DIN EN ISO 8980-1:2017-12, section 5.2.5, in particular pursuant to section 5.2.5, table 4, (3) for a finished power-variation lens: a prescribed dioptric power is within the tolerances for the back vertex power of power-variation lenses pursuant to DIN EN ISO 8980-2:2017-12, section 5.2.2, in particular section 5.2.2, table 1, within the tolerances for the direction of the cylinder axis pursuant to DIN EN ISO 8980-2:2017-12, section 5.2.3, in particular section 5.2.3, table 2, within the tolerances for the variation power (including addition power) pursuant to DIN EN ISO 8980-2:2017-12, section 5.2.4, in particular pursuant to section 5.2.4, table 3, and within the tolerances for the prismatic power pursuant to DIN EN ISO 8980-2:2017-12, section 5.2.5, in particular section 5.2.5, table 4.

14. The product as claimed in claim 13, wherein the at least one layer whose surface topography experiences at least a local change in the surface topography as a result of being brought into contact with at least one medium.

15. The product as claimed in claim 13, wherein the at least one local change in the surface topography is at least one short wavelength surface segment adjoining a long wavelength surface of the at least one layer.

16. The product as claimed in claim 15, wherein the at least one short wavelength surface segment is a surface segment with a periodicity shorter than the smallest periodicity of the adjacent long wavelength surface of the at least one layer.

17. A method of producing a spectacle lens comprising a substrate and at least one coating, wherein the method comprises at least the following steps in the order given below: providing at least a substrate with an uncoated or pre-coated front surface and an uncoated or pre-coated back surface; coating or covering at least one of the surfaces of the substrate, in full or in part, with at least one layer whose surface has a surface topography, the surface topography of the at least one layer itself being changeable as a result of being brought into contact with at least one medium; bringing at least some of the surface of this at least one layer into contact with this at least one medium; and obtaining a spectacle lens having a substrate and at least one layer with a changed surface topography.

18. The method of producing a spectacle lens as claimed claim 1, wherein the change in the at least one layer as a result of being brought into contact with the at least one medium is a change in the surface topography brought about by a diffusion process.

19. The method of producing a spectacle lens as claimed in claim 1, wherein the changed surface topography of the at least one layer is changed over the whole area or locally.

20. The method of producing a spectacle lens as claimed in claim 19, wherein the at least one local change in the surface topography is at least one short wavelength surface segment adjoining a long wavelength surface of the at least one layer.

21. The method of producing a spectacle lens as claimed in claim 20, wherein the at least one short wavelength surface segment is a surface segment with a periodicity shorter than a smallest periodicity of the adjacent long wavelength surface of the at least one layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0346] The disclosure will now be described with reference to the drawings wherein:

[0347] FIG. 1 shows test sample, with the dimensions given in millimeters;

[0348] FIG. 2 shows the height profile of a single and two connected swellings from example 3;

[0349] FIG. 3 shows the height profile of the swellings from example 4; and

[0350] FIG. 4 shoes the height profile of the swellings from example 5.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0351] Method according to the disclosure for producing a spectacle lens.

EXAMPLE 1

[0352] A self-adhesive film (Superstik Premium MP, Satisloh AG) was perforated with a test pattern according to FIG. 1 using a laser (LSU 193, Trotec GmbH). The dimensions of the test sample are given in millimeters. This film with the test pattern was subsequently applied to the photochromic layer on the front surface of a photochromic semi-finished lens blank (ZEISS SF Freeform Puck 1.60 (MR8) Photofusion Gray without further protective layer, hardcoat layer and/or antireflection layer, Carl Zeiss Vision GmbH). Subsequently, 97% oleic acid was applied to the film on this semi-finished lens blank by means of a pipette and was distributed over the entire front surface with film by means of a cotton cloth soaked in 97% oleic acid. Subsequently, this semi-finished lens blank was exposed to xenon irradiation (270 W/m2) for 16 hours in the sample chamber of the Suntest XLS+ device (Atlas Material Testing Technology GmbH). Subsequently, the film was removed from the semi-finished lens blank and the surfaces of the semi-finished lens blank were cleaned using ethanol. A semi-finished lens blank which had, within a circular area with a radius of 0.75 mm, a continuous increase in the layer thickness of the photochromic layer up to a maximum of 2700 nm at each location on the front surface that corresponded to a perforation in the film was obtained.

EXAMPLE 2

[0353] A self-adhesive film (Superstik Premium MP, Satisloh AG) was perforated with a test pattern according to FIG. 1 using a laser (LSU 193, Trotec GmbH). This film with the test pattern was subsequently applied to the photochromic layer on the front surface of an uncut spectacle lens coated with a photochromic layer (ZEISS Single Vision Individual 1.6 PhotoFusion Gray without any further object-side coating) with a dioptric power of −2 dpt. Subsequently, 97% oleic acid was applied to the film on this spectacle lens by means of a pipette and was distributed over the entire film by means of a cotton cloth soaked in 97% oleic acid. Then, this spectacle lens was exposed for 16 hours in the sample chamber of the Suntest XLS+device (Atlas Material Testing Technology GmbH) to a cycle of alternating xenon irradiation (270 W/m2) and flooding with DI (deionized) water under xenon irradiation (270 W/m2). Subsequently, the film was removed from the spectacle lens and the surfaces of the spectacle lens were cleaned using ethanol. A spectacle lens which had, within a circular area with a radius of 0.75 mm, a continuous increase in the layer thickness of the photochromic layer up to a maximum of 3500 nm at each location on the front surface that corresponded to a perforation in the film was obtained.

EXAMPLE 3

[0354] A laser (LSU 193, Trotec GmbH) was used to shoot the test pattern shown in FIG. 1 into the self-adhesive film (Superstik Premium MP, Satisloh AG). The film was bonded to the front surface of a spectacle lens (ZEISS Single Vision Superb 1.60 Photofusion Gray without further protective layer, hardcoat layer and/or antireflection layer, Carl Zeiss Vision GmbH) with the dioptric power of −2 dpt. Then, oleic acid (techn. 96%) was applied to the film with the pipette and was distributed with the aid of a cotton cloth. The front surface with film prepared thus was irradiated for two hours with xenon light in the sample chamber of the Suntest XLS+ device (Atlas Material Testing Technology GmbH) at 35° C., 275 W/m.sup.2, filter plate window glass, with a cycle of 25 minutes irradiation/5 minutes irradiation and flooding with DI water. Subsequently, the film was removed and the front surface was cleaned using a cotton cloth soaked in ethanol (99%). Swellings or elevations with a height of 240 nm in the case of a width of 1 mm arose at the locations on the front surface that corresponded to the holes in the film. The swellings of neighboring positions are merged into one another at the close-together locations; see FIG. 2, which shows the height profile of a single and two connected swellings from example 3. These measurements were carried out using the NewView 7100 optical profilometer by Zygo Corporation based on white-light interferometry.

EXAMPLE 4

[0355] A laser (LSU 193, Trotec GmbH) was used to shoot the pattern defined in FIG. 2 of US 2017/0131567 A1 into an adhesive film (Superstik Premium MP, Satisloh AG). The film prepared thus was bonded to the front surface of a spectacle lens (ZEISS Single Vision Superb 1.60 Photofusion Gray without further protective layer, hardcoat layer and/or antireflection layer, Carl Zeiss Vision GmbH) with a dioptric power of −2.0 dpt. Then, oleic acid (techn. 96%) was applied to the film with the pipette and was distributed with the aid of a cotton cloth. The front surface with film prepared thus was irradiated for 18 hours in the sample chamber of the Suntest XLS+ device (Atlas Material Testing Technology GmbH) at 35° C. with 765 W/m.sup.2 (filter plate window glass). Subsequently, the film was removed and the front surface was cleaned using a cotton cloth soaked in ethanol (99%). The elevations with a height of 1500 nm and a width of 1.45 mm, shown in FIG. 3, arose at the locations on the front surface that corresponded to the holes in the film. The elevations shown in FIG. 3, which show the height profile of the swellings from example 4, were recorded using the NewView 7100 optical profilometer by Zygo Corporation based on white-light interferometry.

EXAMPLE 5

[0356] A spectacle lens produced according to example 4 was coated with a composition according to example 2 of EP 2 578 649 A1 and with the antireflection layer described in paragraph [0056] of EP 2 801 846 A1. FIG. 4 shows the elevations which were recorded using the NewView 7100 optical profilometer by Zygo Corporation based on white-light interferometry. The elevations had a long-term stability of >8 months when stored at room temperature.

EXAMPLE 6

[0357] A Dimatix Printer 2850 inkjet printer was used to apply 30 oleic acid drops, 10 picoliter each, to each point of the front surface whose surface topography is intended to be changed of a ZEISS Single Vision Superb 1.60 Photofusion Gray spectacle lens without further protective layer, hardcoat layer and/or antireflection layer, Carl Zeiss Vision GmbH, and with a dioptric power of −2.0 dpt. The spectacle lens prepared thus was irradiated for 20 hours in the sample chamber of the Suntest XLS+ device at 35° C. with 765 W/m.sup.2 (filter plate window glass). Subsequently, the spectacle lens was cleaned using a cotton cloth soaked in ethanol (99%). Swellings with a height of approximately 1350 nm and a lateral extent of 450 μm arose at the points where oleic acid was applied.

EXAMPLE 7

[0358] A Dimatix Printer 2850 inkjet printer 30 was used to apply an (acrylate-based) UV curing layer as a masking to each point of the front surface whose surface topography is intended not to be changed of a ZEISS Single Vision Superb 1.60 Photofusion Gray spectacle lens without further protective layer, hardcoat layer and/or antireflection layer, Carl Zeiss Vision GmbH, and with a dioptric power of 2.0 dpt. The masking layer was printed with 20-25 V at 40° C. and subsequently cured for 1 minute by means of a UV LED at a wavelength of 385 nm. Then, oleic acid (techn. 96%) was applied to the front surface with the pipette and was distributed with the aid of a cotton cloth. The front surface prepared thus was irradiated for 20 hours in the sample chamber of the Suntest XLS+ device at 35° C. with 765 W/m.sup.2 (filter plate window glass). Subsequently, the spectacle lens was cleaned using a cotton cloth soaked in ethanol (99%). Swellings arose with a height of approximately 559 nm and a lateral extent of 980 μm.

[0359] The foregoing description of the exemplary embodiments of the disclosure illustrates and describes the present invention. Additionally, the disclosure shows and describes only the exemplary embodiments but, as mentioned above, it is to be understood that the disclosure is capable of use in various other combinations, modifications, and environments and is capable of changes or modifications within the scope of the concept as expressed herein, commensurate with the above teachings and/or the skill or knowledge of the relevant art.

[0360] The term “comprising” (and its grammatical variations) as used herein is used in the inclusive sense of “having” or “including” and not in the exclusive sense of “consisting only of.” The terms “a” and “the” as used herein are understood to encompass the plural as well as the singular.

[0361] All publications, patents and patent applications cited in this specification are herein incorporated by reference, and for any and all purposes, as if each individual publication, patent or patent application were specifically and individually indicated to be incorporated by reference. In the case of inconsistencies, the present disclosure will prevail.