# US 10,502,384 B2 · Optical assembly comprising reflectors provided with discontinuities > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,384 B2 - Document ID: US10502384B2 - Status: Granted - Kind: B2 - Application number: 15/950,289 - Filed: 2018-04-11 - Published: 2018-10-11 - Granted: 2019-12-10 - Earliest claimed: 2017-04-11 - Assignees: Valeo Vision - Applicants: Valeo Vision - Inventors: Simon Gousset-Rousseau - Web page: https://patentgrep.com/patent/US10502384B2 ## CPC - F21S 41/33: Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature - F21S 41/148: the main emission direction of the LED being perpendicular to the optical axis - F21S 41/25: Projection lenses - F21S 41/255: Lenses with a front view of circular or truncated circular outline - F21S 41/336: {with discontinuity at the junction between adjacent areas} - F21S 41/36: Combinations of two or more separate reflectors - F21S 41/365: successively reflecting the light - F21S 41/40: characterised by screens, non-reflecting members, light-shielding members or fixed shades - G02B 5/09: Multifaceted or polygonal mirrors {, e.g. polygonal scanning mirrors; Fresnel mirrors} - G02B 19/0019: {having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)} - G02B 19/0047: {for use with a light source (G02B19/009, G02B19/0095 take precedence; details of lighting devices in general F21V; non-semiconductor lasers having optical devices external to the laser cavity H01S3/005)} - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An optical module, particularly for a motor vehicle, including a light source emitting light rays; a projection optic having an optical axis and an object focal point FL; a reflector including two cavities each including a reflection surface for reflecting the light rays originating from the light source towards the projection optic; a cut-off device designed to mask part of the light beam, the cut-off device including a transverse cut-off edge, the cut-off edge being arranged at the object focal point FL of the projection optic. ## Claims ### Claim 1 Optical module, particularly for a motor vehicle, comprising: a light source emitting light rays; a projection optic having an optical axis and an object focal point FL; a reflector comprising two cavities each comprising a reflection surface for reflecting the light rays originating from the light source towards the projection optic; a cut-off device designed to mask part of the light beam, the cut-off device comprising a transverse cut-off edge, the cut-off edge being arranged at the object focal point FL of the projection optic; each of the cavities being arranged on either side of an axial plane comprising the optical axis, the reflection surface of each cavity being divided into a lateral part and a central part of the cavity, the central part of each cavity being arranged along the axial plane, the lateral part of each cavity being transversely located at a distance from the axial plane, each reflection surface having a single object focal point that coincides with the light source, wherein the lateral part of each cavity has a single image focal point coinciding or substantially coinciding with the object focal point of the projection optic, and the central part of each cavity comprises a plurality of image focal points distinct from the object focal point of the projection optic, the cavities being designed so that the light rays reflected by the central parts of the reflector pass through a central part of the projection optic, the central part of the projection optic extending in the vicinity of an intersection between the projection optic and the plane, the light rays reflected by the lateral parts of the reflector passing through two lateral parts of the projection optic transversely located on either side of the central part of the projection optic. ### Claim 2 (depends on 1) Optical module according to claim 1, wherein the reflection surfaces of the cavities are symmetrical or substantially symmetrical relative to the plane. ### Claim 3 (depends on 2) Optical module according to claim 2, wherein the cut-off device is a reflective plate comprising a reflective surface, particularly coinciding with an axial plane transverse and perpendicular to the plane, designed to reflect part of the light rays from the cavities towards the projection optic. ### Claim 4 (depends on 2) Optical module according to claim 2, wherein the cut-off device is a shield designed to stop the propagation of part of the light rays towards the projection optic. ### Claim 5 (depends on 2) Optical module according to claim 2, wherein the image focal points of the central parts of each cavity are substantially aligned along the optical axis. ### Claim 6 (depends on 2) Optical module according to claim 2, comprising two light sources, each light source emitting a light beam respectively towards one or the other of the cavities. ### Claim 7 (depends on 2) Optical module according to claim 2, wherein the lateral part and the central part of each cavity each have an ellipsoid shape. ### Claim 8 (depends on 2) Optical module according to claim 2, designed so that the light rays passing via the lateral parts of each cavity propagate parallel to the optical axis after they pass via the projection optic so as to illuminate ad infinitum, the light rays passing via the central parts of each cavity being projected in a direction that is not parallel to the optical axis after they pass via the projection optic so as to illuminate laterally on either side of the plane. ### Claim 9 (depends on 1) Optical module according to claim 1, wherein the cut-off device is a reflective plate comprising a reflective surface, particularly coinciding with an axial plane transverse and perpendicular to the plane, designed to reflect part of the light rays from the cavities towards the projection optic. ### Claim 10 (depends on 9) Optical module according to claim 9, wherein the light source has a main emission axis perpendicular to the plane. ### Claim 11 (depends on 9) Optical module according to claim 9, wherein the cut-off device is a shield designed to stop the propagation of part of the light rays towards the projection optic. ### Claim 12 (depends on 9) Optical module according to claim 9, wherein the image focal points of the central parts of each cavity are substantially aligned along the optical axis. ### Claim 13 (depends on 9) Optical module according to claim 9, comprising two light sources, each light source emitting a light beam respectively towards one or the other of the cavities. ### Claim 14 (depends on 9) Optical module according to claim 9, wherein the lateral part and the central part of each cavity each have an ellipsoid shape. ### Claim 15 (depends on 9) Optical module according to claim 9, designed so that the light rays passing via the lateral parts of each cavity propagate parallel to the optical axis after they pass via the projection optic so as to illuminate ad infinitum, the light rays passing via the central parts of each cavity being projected in a direction that is not parallel to the optical axis after they pass via the projection optic so as to illuminate laterally on either side of the plane. ### Claim 16 (depends on 1) Optical module according to claim 1, wherein the cut-off device is a shield designed to stop the propagation of part of the light rays towards the projection optic. ### Claim 17 (depends on 1) Optical module according to claim 1, wherein the image focal points of the central parts of each cavity are substantially aligned along the optical axis. ### Claim 18 (depends on 1) Optical module according to claim 1, comprising two light sources, each light source emitting a light beam respectively towards one or the other of the cavities. ### Claim 19 (depends on 1) Optical module according to claim 1, wherein the lateral part and the central part of each cavity each have an ellipsoid shape. ### Claim 20 (depends on 1) Optical module according to claim 1, designed so that the light rays passing via the lateral parts of each cavity propagate parallel to the optical axis after they pass via the projection optic so as to illuminate ad infinitum, the light rays passing via the central parts of each cavity being projected in a direction that is not parallel to the optical axis after they pass via the projection optic so as to illuminate laterally on either side of the plane.