# US 2024/0198613 A1 · Method and composition for tinting a spectacle lens substrate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0198613 A1 - Document ID: US20240198613A1 - Status: Published application - Kind: A1 - Application number: 18/592,714 - Filed: 2024-03-01 - Published: 2024-06-20 - Earliest claimed: 2021-09-10 - Assignees: Carl Zeiss Vision International GmbH - Applicants: Carl Zeiss Vision International GmbH - Inventors: Florian Launay; Dominik Wiedemann; Christian Wolff - Web page: https://patentgrep.com/patent/US20240198613A1 ## CPC - B29D 11/00317: {Production of lenses with markings or patterns} - B29D 11/00903: {on the surface} - B29C 35/02: Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) - B29D 11/00009: {Production of simple or compound lenses} - B29D 11/00923: {on lens surfaces for colouring or tinting (printing or marking in general B41M)} - C09D 11/12: based on waxes or bitumen - C09D 11/30: Inkjet printing inks - G02C 7/021: {with pattern for identification or with cosmetic or therapeutic effects (methods and processes take preference, e.g. printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; surface treatment of glass C03C15/00 - C03C23/00; positioning or marking of lenses B24B13/0055)} - G02C 7/108: {Colouring materials} - B29K 2023/06: {PE, i.e. polyethylene} - B29K 2023/12: {PP, i.e. polypropylene} - B29K 2091/00: Use of waxes as moulding material - B29K 2105/0032: {Pigments, colouring agents or opacifiyng agents} - B41M 3/003: {on optical devices, e.g. lens elements; for the production of optical devices (production by thermal imaging means B41M5/265)} - G02C 7/105: {having inhomogeneously distributed colouring} - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - 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) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) ## Abstract A method for tinting a spectacle lens substrate includes providing a spectacle lens substrate made from a polymeric lens material, providing a composition having a polymeric carrier material, applying a pattern of the composition on a surface of the spectacle lens substrate, and heating the spectacle lens substrate to allow for diffusion of a dye substance between the carrier material and the lens material. Moreover, a composition for in-substrate tinting of a polymeric spectacle lens substrate and a spectacle lens substrate having a polymeric lens material which exhibits a pattern of a composition having a polymeric carrier material applied on a surface of the spectacle lens substrate are presented. ## Claims ### Claim 1 A method for in-substrate tinting of a spectacle lens substrate, the method comprising the following steps: S1: providing a spectacle lens substrate having a polymeric lens material; S2: providing a composition containing a polymeric carrier material; S3: applying a pattern of the composition on a surface of the spectacle lens substrate; and S4: heating the spectacle lens substrate to allow for diffusion of a dye substance between the polymeric carrier material and the polymeric lens material, wherein a congealing point Tc(carrier) of the polymeric carrier material is above a glass transition temperature Tg(lens) of the polymeric lens material. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the composition comprises the dye substance contained in the polymeric carrier material and wherein the dye substance is transferred from the polymeric carrier material into the polymeric lens material by diffusion. ### Claim 3 (depends on 2) The method as claimed in claim 2, wherein the composition exhibits a uniform concentration of the dye substance throughout the composition. ### Claim 4 (depends on 2) The method as claimed in claim 2, wherein the composition comprises a saturated dye loaded carrier material. ### Claim 5 (depends on 1) The method as claimed in claim 1, wherein the polymeric lens material comprises a dye substance and the dye substance is transferred from the lens material into the carrier material by diffusion. ### Claim 6 (depends on 1) The method as claimed in claim 1, wherein the pattern of the composition is directly applied on the surface of the spectacle lens substrate. ### Claim 7 (depends on 1) The method as claimed in claim 1, wherein the spectacle lens substrate is heated to a temperature above the glass transition temperature Tg(lens) of the polymeric lens material and below the congealing point Tc(carrier) of the polymeric carrier material. ### Claim 8 (depends on 1) The method as claimed in claim 1, comprising the following steps: S6: providing a masking agent; S7: applying a pattern of the masking agent on the surface of the spectacle lens substrate to obtain a partially masked spectacle lens substrate; S8: immersing the partially masked spectacle lens substrate in a tinting bath containing a dye substance to allow for tinting unmasked areas of the partially masked spectacle lens substrate; and S9: taking the tinted, partially masked spectacle lens substrate out of the tinting bath and removing the masking agent from the surface of the tinted, partially masked spectacle lens substrate. ### Claim 9 (depends on 8) The method as claimed in claim 8, wherein the masking agent is the composition comprising the polymeric carrier material. ### Claim 10 (depends on 1) The method as claimed in claim 1, wherein the pattern is applied by inkjet printing. ### Claim 11 (depends on 1) The method as claimed in claim 1, comprising preparing the composition according to the following steps: S10: providing a carrier material and a dye substance; S11: heating the carrier material above its congealing point Tc(carrier); S12: dissolving the dye substance in the melted carrier material to obtain a dye loaded carrier material; and S13: cooling the dye loaded carrier material to room temperature. ### Claim 12 (depends on 1) The method as claimed in claim 1, wherein the polymeric carrier material comprises at least one material selected from the group consisting of oxidized polyethylene waxes, non-oxidized polyethylene waxes, oxidized polypropylene waxes, and non-oxidized polypropylene waxes. ### Claim 13 A spectacle lens substrate comprising: a polymeric lens material, wherein the spectacle lens substrate exhibits a pattern of a composition containing the polymeric carrier material applied on a surface of the spectacle lens substrate, the polymeric carrier material including at least one material selected from the group consisting of oxidized polyethylene waxes, non-oxidized polyethylene waxes, oxidized polypropylene waxes, and non-oxidized polypropylene waxes, wherein the composition includes a dye substance contained in the polymeric carrier material and/or the polymeric lens material includes the dye substance, and wherein the composition allows for transferring the dye substance from the polymeric carrier material into the polymeric lens material and/or the dye substance from the polymeric lens material into the polymeric carrier material by diffusion upon heating the spectacle lens substrate, wherein a congealing point Tc(carrier) of the polymeric carrier material is above a glass transition temperature Tg(lens) of the polymeric lens material. ### Claim 14 (depends on 13) The spectacle lens substrate as claimed in claim 13, wherein the composition exhibits a uniform concentration of the dye substance throughout the composition. ### Claim 15 A method for in-substrate tinting of a spectacle lens substrate, the method comprising the following steps: S1: providing a spectacle lens substrate having a polymeric lens material; S2: providing a composition containing a polymeric carrier material; S3: applying a pattern of the composition on a surface of the spectacle lens substrate; and S4: heating the spectacle lens substrate to allow for diffusion of a dye substance between the polymeric carrier material and the polymeric lens material, wherein the polymeric lens material contains a dye substance and the dye substance is transferred from the polymeric lens material into the carrier material by diffusion. ### Claim 16 (depends on 15) The method as claimed in claim 15, wherein the composition comprises the dye substance contained in the carrier material and wherein the dye substance is transferred from the polymeric carrier material into the polymeric lens material by diffusion. ### Claim 17 (depends on 16) The method as claimed in claim 16, wherein the composition exhibits a uniform concentration of the dye substance throughout the composition. ### Claim 18 (depends on 15) The method as claimed in claim 15, wherein the composition comprises a saturated dye loaded carrier material. ### Claim 19 (depends on 15) The method as claimed in claim 15, wherein the pattern of the composition is directly applied on the surface of the spectacle lens substrate. ### Claim 20 (depends on 15) The method as claimed in claim 15, wherein a congealing point Tc(carrier) of the carrier material is above a glass transition temperature Tg(lens) of the lens material. ### Claim 21 (depends on 15) The method as claimed in claim 15, wherein the spectacle lens substrate is heated to a temperature above the glass transition temperature Tg(lens) of the lens material and below the congealing point Tc(carrier) of the carrier material. ### Claim 22 (depends on 15) The method as claimed in claim 15, comprising the following steps: S6: providing a masking agent; S7: applying a pattern of the masking agent on the surface of the spectacle lens substrate to obtain a partially masked spectacle lens substrate; S8: immersing the partially masked spectacle lens substrate in a tinting bath containing the dye substance to allow for tinting unmasked areas of the partially masked spectacle lens substrate; and S9: taking the tinted, partially masked spectacle lens substrate out of the tinting bath and removing the masking agent from the surface of the tinted, partially masked spectacle lens substrate. ### Claim 23 (depends on 22) The method as claimed in claim 22, wherein the masking agent is the composition comprising the carrier material. ### Claim 24 (depends on 15) The method as claimed in claim 15, wherein the pattern is applied by inkjet printing. ### Claim 25 (depends on 15) The method as claimed in claim 15, comprising preparing the composition according to the following steps: S10: providing a carrier material and a dye substance; S11: heating the carrier material above its congealing point Tc(carrier); S12: dissolving the dye substance in the melted carrier material to obtain a dye loaded carrier material; and S13: cooling the dye loaded carrier material to room temperature. ### Claim 26 (depends on 15) The method as claimed in claim 15, wherein the polymeric carrier material comprises at least one material selected from the group consisting of oxidized polyethylene waxes, non-oxidized polyethylene waxes, oxidized polypropylene waxes, and non-oxidized polypropylene waxes. ### Claim 27 A spectacle lens substrate comprising: a polymeric lens material containing a dye substance, wherein the spectacle lens substrate exhibits a pattern of a composition containing a polymeric carrier material applied on a surface of the spectacle lens substrate, the carrier material containing at least one material selected from the group consisting of oxidized polyethylene waxes, non-oxidized polyethylene waxes, oxidized polypropylene waxes, and non-oxidized polypropylene waxes, wherein the composition allows for transferring the dye substance from the polymeric lens material into the carrier material by diffusion upon heating the spectacle lens substrate. ### Claim 28 (depends on 27) The spectacle lens substrate as claimed in claim 27, wherein the composition allows for transferring the dye substance from the polymeric carrier material into the polymeric lens material by diffusion upon heating the spectacle lens substrate. ### Claim 29 (depends on 28) The spectacle lens substrate as claimed in claim 28, wherein the composition comprises a dye substance contained in the carrier material. ### Claim 30 (depends on 29) The spectacle lens substrate as claimed in claim 29, wherein the composition exhibits a uniform concentration of the dye substance throughout the composition. ### Claim 31 (depends on 27) The spectacle lens substrate as claimed in claim 27, wherein a congealing point Tc(carrier) of the polymeric carrier material is above a glass transition temperature Tg(lens) of the polymeric lens material.