# US 12,109,770 B2 · Method for manufacturing a spectacle lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,770 B2 - Document ID: US12109770B2 - Status: Granted - Kind: B2 - Application number: 18/304,451 - Filed: 2023-04-21 - Published: 2023-08-17 - Granted: 2024-10-08 - Earliest claimed: 2020-10-23 - Assignees: Carl Zeiss Vision International GmbH - Applicants: Carl Zeiss Vision International GmbH - Inventors: Maximilian Kastner; Michel-René Christmann; Andreu Llobera Adan - Web page: https://patentgrep.com/patent/US12109770B2 ## CPC - B29D 11/00326: {having particular surface properties, e.g. a micropattern} - B29D 11/00009: {Production of simple or compound lenses} - B29D 11/00442: {Curing the lens material} - B29D 11/00865: {Applying coatings; tinting; colouring (printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; positioning or marking of lenses B24B13/0055)} - G02C 7/022: {Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence)} - G02C 2202/24: Myopia progression prevention - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract A method for manufacturing a spectacle lens including a lens substrate and at least one coating is disclosed. The method includes at least the following steps of providing a lens substrate comprising an uncoated or precoated front surface and an uncoated or precoated back surface, covering at least one of the surfaces of the lens substrate partially or completely with at least one coating composition, drying and/or precuring the at least one coating composition, contacting the surface of the at least one coating composition with at least one mechanical means, curing and/or hardening the at least one coating composition and obtaining a spectacle lens comprising a lens substrate and at least one coating, the surface topography of the at least one coating being modified by the at least one mechanical means. ## Claims ### Claim 1 A method for manufacturing a spectacle lens, the spectacle lens having a lens substrate and at least one coating, the method comprising at least the following steps: providing a lens substrate having an uncoated or precoated front surface and an uncoated or precoated back surface; covering at least one of the surfaces of the lens substrate partially or completely with at least one coating composition; and drying and/or precuring the at least one coating composition, wherein the method further comprises at least the following steps: contacting a surface of the at least one coating composition with at least one mechanical means; retracting the at least one mechanical means from the surface of the at least one coating composition to locally change a coating thickness at a point of contact between the coating composition and the at least one mechanical means; curing and/or hardening the at least one coating composition; and obtaining the spectacle lens having the lens substrate and the at least one coating, the surface topography of the at least one coating being modified by the at least one mechanical means at the point of contact, and the modification of the surface topography of the at least one coating resulting in at least one micro lens. ### Claim 2 (depends on 1) The method according to claim 1, wherein the at least one coating composition is selected from of at least one of the group consisting of at least one primer coating composition, at least one hard coating composition, at least one photochromic composition and at least one coating composition analogous to the at least one photochromic composition not comprising at least one photochromic dye. ### Claim 3 (depends on 1) The method according to claim 1, wherein the at least one mechanical means is selected from of at least one of the group consisting of at least one contact head, an array of contact heads, a device containing at least one contact head, at least one needle, an array of needles and/or a device containing the at least one needle. ### Claim 4 (depends on 1) The method according to claim 1, wherein the contacting of the surface of the at least one coating with the at least one mechanical means is performed by touching the surface of the at least one coating with the at least one mechanical means or by dipping the at least one mechanical means into the at least one coating. ### Claim 5 (depends on 1) The method according to claim 1, wherein after the contacting of the surface of the at least one coating with the at least one mechanical means, the at least one mechanical means is removed from the surface or pulled out of the at least one coating. ### Claim 6 (depends on 1) The method according to claim 1, wherein at least a viscosity of the at least one coating, dimensions of the at least one mechanical means, a velocity of removal of the at least one mechanical means, a direction of the removal of the at least one mechanical means, the velocity of the pulling out of the at least one mechanical means and/or the direction of the pulling out of the at least one mechanical means influences the surface topography of the at least one coating. ### Claim 7 (depends on 1) The method according to claim 1, wherein the contacting of the surface of the at least one coating composition with the at least one mechanical means is temporary. ### Claim 8 (depends on 1) The method according to claim 1, wherein the curing and/or hardening of the at least one coating composition is performed by the application of direct heat. ### Claim 9 (depends on 1) The method according to claim 1, wherein the curing and/or hardening of the at least one coating composition is performed by the application of at least one single electromagnetic pulse. ### Claim 10 (depends on 9) The method according to claim 9, wherein the at least one single electromagnetic pulse is be applied from at least one electromagnetic source selected from of at least one of the group consisting of at least one flash lamp, at least one halogen lamp, at least one directed plasma arc, at least one laser, at least one microwave generator, at least one induction heater, at least one electron beam, at least one stroboscope and at least one mercury lamp. ### Claim 11 (depends on 9) The method according to claim 9, wherein a total time needed for curing and/or hardening lies within at least one range selected from the following: (A) a range from 100 μs to 7 min, (B) a range from 300 μs to 5 min, (C) a range from 500 μs to 4 min, and (D) a range from 1 ms to 3 min. ### Claim 12 A method for manufacturing a spectacle lens, the spectacle lens having a lens substrate and at least one coating, the method comprising at least the following steps: providing a lens substrate comprising an uncoated or precoated front surface and an uncoated or precoated back surface; covering at least one of the surfaces of the lens substrate partially or completely with a least one coating composition; and drying and/or precuring the at least one coating composition, the method further comprising at least the following steps: contacting a surface of the at least one coating composition with at least one mechanical means; retracting the at least one mechanical means from the surface of the at least one coating composition to locally change a coating thickness at a point of contact between the coating composition and the at least one mechanical means; curing and/or hardening the at least one coating composition by a) the application of direct heat or by b) (i) the application of at least one single electromagnetic pulse or by b) (ii) the application of single electromagnetic pulses to at least one of the surfaces of the spectacle lens, the spectacle lens containing the lens substrate and the at least one coating; and obtaining the spectacle lens having the lens substrate and the at least one coating, a surface topography of the at least one coating being modified by the at least one mechanical means at the point of contact. ### Claim 13 (depends on 12) The method according to claim 12, wherein the modification of the surface topography of the at least one coating results in at least one micro lens. ### Claim 14 (depends on 12) The method according to claim 12, wherein the contacting of the surface of the at least one coating composition with the at least one mechanical means is temporary. ### Claim 15 (depends on 12) The method according to claim 12, wherein the contacting of the surface of the at least one coating with the at least one mechanical means is performed by touching the surface of the at least one coating with the at least one mechanical means or by dipping the at least one mechanical means into the at least one coating. ### Claim 16 (depends on 12) The method according to claim 12, wherein after the contacting of the surface of the at least one coating with the at least one mechanical means, the at least one mechanical means is removed from the surface or pulled out of the at least one coating. ### Claim 17 (depends on 12) The method according to claim 12, wherein the at least one coating composition is selected from of at least one of the group consisting of at least one primer coating composition, at least one hard coating composition, at least one photochromic composition, and at least one coating composition analogous to the at least one photochromic composition not comprising at least one photochromic dye. ### Claim 18 (depends on 12) The method according to claim 12, wherein the at least one mechanical means is selected from of at least one of the group consisting of at least one contact head, an array of contact heads, a device including the at least one contact head, at least one needle, an array of needles and/or a device including the at least one needle. ### Claim 19 (depends on 12) The method according to claim 12, wherein a total process duration needed for curing the at least one coating by b) (i) the application of at least one single electromagnetic pulse or by b) (ii) the application of single electromagnetic pulses, lies within a range from 100 μs to 7 min. ### Claim 20 (depends on 12) The method according to claim 12, wherein the at least one single electromagnetic pulse or each single electromagnetic pulse has an envelope in a range from 50 μs to 200 ms. ### Claim 21 (depends on 12) The method according to claim 12, wherein the at least one single electromagnetic pulse or each single electromagnetic pulse comprises light delivered by at least one electromagnetic source selected from of at least one of the group consisting of at least one flash lamp, at least one halogen lamp, at least one directed plasma arc, at least one laser, at least one microwave generator, at least one induction heater, at least one electron beam, at least one stroboscope, and at least one mercury lamp. ### Claim 22 (depends on 12) The method according to claim 12, wherein the at least one single electromagnetic pulse or each single electromagnetic pulse has a wavelength in a range from 100 nm to 1800 nm.