# US 2021/0239795 A1 · Sensor arrangement comprising a cover element and method for producing the cover element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0239795 A1 - Document ID: US20210239795A1 - Status: Published application - Kind: A1 - Application number: 17/049,135 - Filed: 2019-04-23 - Published: 2021-08-05 - Earliest claimed: 2018-04-24 - Assignees: Webasto SE - Applicants: Webasto SE - Inventors: Alexander KILIAS; Andrea KRAMER; Dirk LEGLER - Web page: https://patentgrep.com/patent/US20210239795A1 ## CPC - G01S 7/4047: {Heated dielectric lens, e.g. by heated wire} - B60S 1/0848: {Cleaning devices for cameras on vehicle} - G01S 7/4813: {Housing arrangements} - G01S 17/931: of land vehicles - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract A sensor arrangement of a motor vehicle, the sensor arrangement having a sensor element emitting electromagnetic radiation in a measuring direction to determine a measurement signal, and a cover element disposed in front of the sensor element in the measuring direction and being an injection-molded plastic part permeable to the electro-magnetic radiation and having an outer side facing a vehicle environment and an inner side facing the sensor element, and a heating means comprising conductor tracks. The conductor tracks can be applied to a film formed to the inner side of the cover element during production of the cover element by injection-molding, the film with the conductor tracks thus forming an insert of the injection-molded cover element, the conductor tracks being located on the side of the film facing away from the sensor element. ## Claims ### Claim 1 A sensor arrangement of a motor vehicle, the sensor arrangement comprising: a sensor element emitting electromagnetic radiation in a measuring direction to determine a measurement signal, and a cover element disposed in front of the sensor element in the measuring direction and being an injection-molded plastic part permeable to the electromagnetic radiation and having an outer side facing a vehicle environment and an inner side facing the sensor element, and a heating means comprising conductor tracks, wherein the conductor tracks are applied to a film formed to the inner side of the cover element during production of the cover element by injection-molding, the film with the conductor tracks thus forming an insert of the injection-molded cover element, the conductor tracks being located on the side of the film facing away from the sensor element. ### Claim 2 (depends on 1) The sensor arrangement according to claim 1, wherein the film has an anti-reflection coating on its side facing away from the conductor tracks. ### Claim 3 (depends on 2) The sensor arrangement according to claim 2, wherein the anti-reflection coating is reflective for electromagnetic radiation having a wavelength outside of a specific wavelength spectrum. ### Claim 4 (depends on 2) The sensor arrangement according to claim 2 wherein the anti-reflection coating has a surface structure. ### Claim 5 (depends on 1) The sensor arrangement according to claim 1, wherein the plastic of the cover element is made of a polycarbonate material. ### Claim 6 (depends on 1) The sensor arrangement according to claim 1, wherein the film comprises a polycarbonate material. ### Claim 7 (depends on 1) The sensor arrangement according to claim 1, wherein the cover element is provided with a protective coating on its outer side. ### Claim 8 (depends on 7) The sensor arrangement according to claim 7, wherein the protective coating has a refractive index less than that of the plastic material of the cover element. ### Claim 9 (depends on 1) The sensor arrangement according to claim 1, wherein the cover element is an outer skin element of a vehicle roof. ### Claim 10 (depends on 1) The sensor arrangement according to claim 1, wherein the cover element is an outer skin element of a vehicle front or of a vehicle rear. ### Claim 11 A method for producing a cover element of a sensor arrangement of a motor vehicle, the method comprising the following steps: providing a film having a first side and a second side; applying conductor tracks to the first side of the film; introducing the film with the conductor tracks into a mold cavity of an injection mold; filling the mold cavity of the injection mold with a plastic material; hardening the plastic material in the mold cavity to form the cover element having the film molded thereon; and demolding the cover element having the film molded thereon. ### Claim 12 (depends on 11) The method according to claim 11, wherein an anti-reflection coating is applied to the second side of the film. ### Claim 13 (depends on 11) The method according to claim 11, wherein the anti-reflection coating is subjected to a structuring process. ### Claim 14 (depends on 12) The method according to claim 12, wherein the film is unwound from a first roller and then wound onto a second roller to apply the anti-reflection coating. ### Claim 15 (depends on 14) The method according to claim 14, wherein the film is unwound from the second roller to apply the conductor tracks. ### Claim 16 (depends on 11) The method according to claim 11, wherein after demolding, the cover element is provided with a protective coating on the side facing away from the film. ### Claim 17 (depends on 13) The method according to claim 13, wherein the structuring process is a plasma etching process.