# US 10,371,335 B2 · Lighting module for a vehicle headlamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,335 B2 - Document ID: US10371335B2 - Status: Granted - Kind: B2 - Application number: 15/738,340 - Filed: 2016-06-09 - Published: 2018-06-28 - Granted: 2019-08-06 - Earliest claimed: 2015-06-30 - Assignees: ZKW Group GmbH - Applicants: Zkw Group GmbH - Inventors: Jürgen Zorn; Thomas Edletzberger; Christian Bemmer; Peter Schadenhofer; Martin Schragl; Martin Stein - Web page: https://patentgrep.com/patent/US10371335B2 ## CPC - F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805} - F21S 41/14: characterised by the type of light source - F21S 41/16: Laser light sources - F21S 41/176: Light sources where the light is generated by photoluminescent material spaced from a primary light generating element - F21S 41/24: Light guides - F21S 41/255: Lenses with a front view of circular or truncated circular outline - F21S 41/28: {Cover glass} - F21S 41/47: Attachment thereof (achieving variable light distribution by movable screens F21S41/683) - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS ## Abstract A lighting module (1) for a vehicle headlamp (2), wherein the lighting module (1) comprises at least one lighting element (3), which is excitable to emit visible light when illuminated by laser light, and at least one light-transmissive carrier element (4), wherein the carrier element (4) has at least one light-entry face (4a) and at least one light-exit face (4b) lying opposite the light-entry face (4a), wherein the at least one lighting element (3) is arranged at the at least one light-entry face (4a) of the carrier element (4) in order to radiate light into the light-entry face (4a), wherein a) the at least one light-exit face (4b) of the carrier element (4) is delimited by a light-opaque mask (5) surrounding the light-exit face (4b) or b) the at least one light-exit face (4b) reaches up to the side faces (6a to 6d) of the carrier element (4), wherein at least one side face (6b) has two side portions (6b′, 6b″) adjoining one another, said side portions being inclined relative to one another for forming a light/dark boundary. ## Claims ### Claim 1 A motor vehicle headlamp (2) comprising: a laser light source (7); and a lighting module (1) which comprises: at least one lighting element (3), which is configured to be excited by the laser light source (7) to emit visible light when illuminated by laser light of the laser light source, and at least one light-transmissive carrier element (4), wherein the at least one light-transmissive carrier element (4) has at least one light-entry face (4a) and at least one light-exit face (4b) lying opposite the at least one light-entry face (4a), wherein the at least one lighting element (3) is arranged at the at least one light-entry face (4a) of the at least one light-transmissive carrier element (4) in order to radiate light into the at least one light-entry face (4a), wherein: a) the at least one light-exit face (4b) of the at least one light-transmissive carrier element (4) is delimited by a light-opaque mask (5) surrounding the at least one light-exit face (4b), or b) the at least one light-exit face (4b) reaches up to the side faces (6a to 6d) of the at least one light-transmissive carrier element (4), wherein at least one side face (6b) of the side faces has two side portions (6b′, 6b″) adjoining one another, said two side portions being inclined relative to one another for forming a light/dark boundary. ### Claim 2 (depends on 1) The motor vehicle headlamp according to claim 1, wherein the at least one light-transmissive carrier element (4) is made of glass. ### Claim 3 (depends on 1) The motor vehicle headlamp according to claim 1, wherein the at least one light-entry face (4a) and the at least one light-exit face (4b) are parallel to one another. ### Claim 4 (depends on 3) The motor vehicle headlamp according to claim 3, wherein the ratio of the at least one light-entry face (4a) to the at least one light-exit face (4b) is between 1:1 and 1:10, the ratio of the at least one light-exit face (4b) measured in mm2 to the distance between the at least one light-entry face and the at least one light-exit face (4b) measured in mm is less than 2:1, and the ratio of the at least one light-entry face (4a) measured in mm2 to the distance between the at least one light-entry face and the at least one light-exit face (4a) measured in mm is less than 1:2. ### Claim 5 (depends on 1) The motor vehicle headlamp according to claim 1, wherein the at least one light-transmissive carrier element (4) is a plane-parallel plate which has a thickness of at least 0.2 mm. ### Claim 6 (depends on 1) The motor vehicle headlamp according to claim 1, wherein the light-opaque mask (5) is formed of a lacquer coating, a polymer, or a metal coating. ### Claim 7 (depends on 1) The motor-vehicle headlamp according to claim 1, wherein the light-opaque mask (5) is configured to limit the at least one light-exit face (4b) to a substantially six-sided geometrical shape, which is formed of a rectangular area and a trapezoid area sitting on one half of the rectangular area, wherein a side line of the trapezoid area extends in line with a side line of the rectangular area. ### Claim 8 (depends on 1) The motor vehicle headlamp (2) according to claim 1, further comprising a projection lens (8) for imaging light emitted by the lighting module (1) into a region disposed in front of the motor vehicle headlamp (2). ### Claim 9 (depends on 8) The motor vehicle headlamp (2) according to claim 8, wherein the at least one light-exit face (4b) of the lighting module (1) has a course (E) adapted to the curvature of the field of view of the projection lens (8). ### Claim 10 (depends on 8) The motor vehicle headlamp (2) according to claim 8, wherein the projection lens (8) is an aspherical projection lens.