# US 11,028,990 B2 · Single-piece optical motor-vehicle part comprising a structural modification > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,028,990 B2 - Document ID: US11028990B2 - Status: Granted - Kind: B2 - Application number: 16/562,804 - Filed: 2019-09-06 - Published: 2020-03-12 - Granted: 2021-06-08 - Earliest claimed: 2018-09-07 - Assignees: Valeo Vision - Applicants: Valeo Vision - Inventors: Pierre Renaud; Alexandre Joerg; Francois Gratecap; Yves Gromfeld - Web page: https://patentgrep.com/patent/US11028990B2 ## CPC - F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device - F21S 41/24: Light guides - F21S 41/25: Projection lenses - F21S 41/322: {the reflector using total internal reflection} - F21S 41/43: characterised by the shape thereof - F21S 41/47: Attachment thereof (achieving variable light distribution by movable screens F21S41/683) - F21S 41/663: by switching light sources (by switching incandescent light sources F21S41/162) - F21W 2102/145: wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS ## Abstract A single-piece optical vehicle part comprising: a plurality of entrance dioptric interfaces and/or a plurality of exit dioptric interfaces; at least one junction between two adjacent entrance dioptric interfaces and/or at least one junction between two adjacent exit dioptric interfaces. The junction between two adjacent entrance dioptric interfaces and/or the junction between two adjacent exit dioptric interfaces has a structural modification allowing light to be absorbed and/or scattered. ## Claims ### Claim 1 Single-piece optical vehicle part comprising: a plurality of optical waveguides each having an entrance dioptric and an exit dioptric interface; at least one junction located along an optical path of one of said optical waveguides between two adjacent entrance dioptric interfaces and/or between two adjacent exit dioptric interfaces; and the single-piece optical part, wherein the junction between two adjacent entrance dioptric interfaces and/or between two adjacent exit dioptric interfaces has at least one structural modification to a surface of the single-piece optical part allowing light to be absorbed and/or scattered. ### Claim 2 (depends on 1) Single-piece optical part according to claim 1, wherein only the junctions between the adjacent entrance dioptric interfaces have the structural modification. ### Claim 3 (depends on 2) Single-piece optical part according to claim 2, wherein the one or more junctions between two dioptric interfaces forms a line of separation of said dioptric interfaces, the structural modification being arranged along this line of separation. ### Claim 4 (depends on 2) Single-piece optical part according to claim 2, wherein the entrance dioptric interfaces and/or the exit dioptric interfaces are spaced apart from one another so that a gap separates the adjacent entrance dioptric interfaces and/or the adjacent exit dioptric interfaces, the gap comprising walls that together form the junction between the dioptric interfaces that it separates. ### Claim 5 (depends on 2) Single-piece optical part according to claim 2, wherein the structural modification is blackened area produced by laser. ### Claim 6 (depends on 1) Single-piece optical part according to claim 1, wherein only the junctions between the adjacent exit dioptric interfaces have the structural modification. ### Claim 7 (depends on 1) Single-piece optical part according to claim 1, wherein the one or more junctions between two dioptric interfaces forms a line of separation of said dioptric interfaces, the structural modification being arranged along this line of separation. ### Claim 8 (depends on 7) Single-piece optical part according to claim 7, wherein the structural modification, arranged along the line of separation, extends depthwise into material of the optical part. ### Claim 9 (depends on 1) Single-piece optical part according to claim 1, wherein the entrance dioptric interfaces and/or the exit dioptric interfaces are spaced apart from one another so that a gap separates the adjacent entrance dioptric interfaces and/or the adjacent exit dioptric interfaces, the gap comprising walls that together form the junction between the dioptric interfaces that it separates. ### Claim 10 (depends on 9) Single-piece optical part according to claim 9, at least one structural modification is produced in the gap between the adjacent entrance dioptric interfaces and/or between the adjacent exit dioptric interfaces, and in that the structural modification is located at a bottom of the gap. ### Claim 11 (depends on 10) Single-piece optical part according to claim 10, wherein at least one structural modification is produced in the gap between the adjacent entrance dioptric interfaces, and in that the structural modification is located as close as possible to the adjacent entrance dioptric interfaces. ### Claim 12 (depends on 10) Single-piece optical part according to claim 10, wherein the junction between two adjacent entrance dioptric interfaces and/or the junction between two adjacent exit dioptric interfaces has a total area, called the total junction area, and in that the structural modification partially occupies the total area of the junction in question. ### Claim 13 (depends on 10) Single-piece optical part according to claim 10, wherein the structural modification is a roughened area produced by graining. ### Claim 14 (depends on 9) Single-piece optical part according to claim 9, wherein at least one structural modification is produced in the gap between the adjacent entrance dioptric interfaces, and in that the structural modification is located as close as possible to the adjacent entrance dioptric interfaces. ### Claim 15 (depends on 9) Single-piece optical part according to claim 9, wherein the junction between two adjacent entrance dioptric interfaces and/or the junction between two adjacent exit dioptric interfaces has a total area, called the total junction area, and in that the structural modification partially occupies the total area of the junction in question. ### Claim 16 (depends on 9) Single-piece optical part according to claim 9, wherein the structural modification is a roughened area produced by graining. ### Claim 17 (depends on 9) Single-piece optical part according to claim 9, wherein the structural modification comprises a reflective, absorbent and/or scattering coating. ### Claim 18 (depends on 1) Single-piece optical part according to claim 1, wherein the structural modification is a blackened area produced by laser. ### Claim 19 Single-piece optical vehicle part comprising: a plurality of entrance dioptric interfaces and/or a plurality of exit dioptric interfaces; at least one junction between two adjacent entrance dioptric interfaces and/or at least one junction between two adjacent exit dioptric interfaces; the single-piece optical part, wherein: the junction between two adjacent entrance dioptric interfaces and/or the junction between two adjacent exit dioptric interfaces has at least one structural modification allowing light to be absorbed and/or scattered, the entrance dioptric interfaces and/or the exit dioptric interfaces are spaced apart from one another so that a gap separates the adjacent entrance dioptric interfaces and/or the adjacent exit dioptric interfaces, the gap comprising walls that together form the junction between the dioptric interfaces that it separates, at least one structural modification is produced in the gap between the adjacent exit dioptric interfaces, and the structural modification is located as close as possible to the adjacent exit dioptric interfaces. ### Claim 20 Single-piece optical vehicle part comprising: a plurality of entrance dioptric interfaces and/or a plurality of exit dioptric interfaces; at least one junction between two adjacent entrance dioptric interfaces and/or at least one junction between two adjacent exit dioptric interfaces; the single-piece optical part, wherein: the junction between two adjacent entrance dioptric interfaces and/or the junction between two adjacent exit dioptric interfaces has at least one structural modification allowing light to be absorbed and/or scattered, the entrance dioptric interfaces and/or the exit dioptric interfaces are spaced apart from one another so that a gap separates the adjacent entrance dioptric interfaces and/or the adjacent exit dioptric interfaces, the gap comprising walls that together form the junction between the dioptric interfaces that it separates, at least one structural modification is produced in the gap between the adjacent entrance dioptric interfaces and/or between the adjacent exit dioptric interfaces, and the structural modification is located at a bottom of the gap, and at least one structural modification is produced in the gap between the adjacent exit dioptric interfaces, and that the structural modification is located as close as possible to the adjacent exit dioptric interfaces.