# US 11,898,719 B2 · Deicing system for an automotive lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,719 B2 - Document ID: US11898719B2 - Status: Granted - Kind: B2 - Application number: 17/648,606 - Filed: 2022-01-21 - Published: 2022-10-27 - Granted: 2024-02-13 - Earliest claimed: 2020-06-15 - Assignees: Grote Industries, Inc. - Applicants: Grote Industries, Inc. - Inventors: Jiabiao Ruan; Sankalp Pampattiwar; Ammar Ali; Cesar Perez-Bolivar - Web page: https://patentgrep.com/patent/US11898719B2 ## CPC - F21S 45/60: Heating of lighting devices, e.g. for demisting - F21S 41/28: {Cover glass} - F21S 41/2805: {Cover glass} - F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805} - F21V 31/005: {Sealing arrangements therefor} - H05B 3/16: the conductor being mounted on an insulating base - H05B 3/84: Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields - H05B 2203/013: Heaters using resistive films or coatings - H05B 2203/016: Heaters using particular connecting means - H05B 2214/02: Heaters specially designed for de-icing or protection against icing - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A lamp or lens assembly for a motor vehicle that includes electrically conductive traces for defogging or deicing the lens. Aspects include a light transmissive lens coupled to a lamp housing. The light transmissive lens may define a curved cross-section with a curvature extending across the length and/or the width of the lens. The lens may include one or more electrically conductive traces positioned on a surface of the lens, the electrically conductive traces optionally extending across and curving with the curvature of the light transmissive lens. One or more coatings may optionally cover the conductive traces and a portion of the lens surface leaving portions uncovered. The electrically conductive traces may extend outwardly away from the surface of the lens with height that is greater than their width. ## Claims ### Claim 1 A lamp assembly for a vehicle, comprising a light transmissive lens coupled to a housing and positioned in front of a lamp of the vehicle, the light transmissive lens defining a curved cross-section and a curvature extending across the light transmissive lens; one or more electrically conductive traces in direct contact with a surface of the lens, the electrically conductive traces extending across and curving with the curvature of the light transmissive lens; and a first coating covering the one or more electrically conductive traces, wherein the first coating covers a portion of the lens surface leaving a separate second portion uncovered. ### Claim 2 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces are positioned on an inside surface of the light transmissive lens. ### Claim 3 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces are positioned on an outside surface of the light transmissive lens. ### Claim 4 (depends on 3) The lamp assembly of claim 3, comprising: a second coating covering the outside surface of the lens and the electrically conductive traces, wherein the second coating has a different chemical composition than the first coating. ### Claim 5 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces have a cross-section that is taller than it is wide. ### Claim 6 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces have a cross-section that is wider than it is tall. ### Claim 7 (depends on 1) The lamp assembly of claim 1, wherein the curvature of the light transmissive lens defines a concave interior surface, and a convex exterior surface, and wherein the electrically conductive traces are positioned on the concave interior surface of the lens. ### Claim 8 (depends on 7) The lamp assembly of claim 7, wherein the electrically conductive traces are positioned on the convex exterior surface of the lens. ### Claim 9 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces are primarily made of conductive silver ink. ### Claim 10 (depends on 9) The lamp assembly of claim 9, wherein the silver ink is opaque. ### Claim 11 (depends on 9) The lamp assembly of claim 9, wherein the silver ink is light transmissive. ### Claim 12 (depends on 1) The lamp assembly of claim 1, comprising a second coating covering the first coating and the one or more electrically conductive traces, wherein the second coating has a different chemical composition than the first coating, and wherein the second coating includes an anti-fog compound. ### Claim 13 (depends on 1) The lamp assembly of claim 1, wherein the light transmissive lens defines a curved surface area that is at least 65 square inches. ### Claim 14 (depends on 1) The lamp assembly of claim 1, wherein the light transmissive lens is substantially round, and wherein the curved cross-section defines an arc extending outwardly from a center of the lens. ### Claim 15 (depends on 14) The lamp assembly of claim 14, wherein the light transmissive lens is about 4 to 4½ inches in diameter. ### Claim 16 (depends on 1) The lamp assembly of claim 1, wherein the lens is a headlight lens for a vehicle, the headlight lens defining an L-shaped cross-section and a corresponding corner region, the electrically conductive traces extending across the corner region. ### Claim 17 (depends on 1) The lamp assembly of claim 1, comprising at least two electrically conductive terminals on the surface of the light transmissive lens; wherein the at least two electrically conductive terminals are electrically connected to the conductive traces; and wherein one of the electrically conductive terminals is configured to receive power from a vehicle power source. ### Claim 18 (depends on 1) Lamp assembly of claim 1, wherein the electrically conductive traces have a resistance of less than 500 ohms. ### Claim 19 (depends on 1) The lamp assembly of claim 1, wherein the electrically conductive traces extend outwardly away from the surface of the lens and have a thickness of at least 0.03 mm.