# US 10,371,339 B2 · Lighting module with diffraction screen for a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,339 B2 - Document ID: US10371339B2 - Status: Granted - Kind: B2 - Application number: 15/696,879 - Filed: 2017-09-06 - Published: 2018-03-08 - Granted: 2019-08-06 - Earliest claimed: 2016-09-06 - Assignees: Valeo Vision - Applicants: Valeo Vision - Inventors: Marie Pellarin; David Bourdin - Web page: https://patentgrep.com/patent/US10371339B2 ## CPC - F21S 41/40: characterised by screens, non-reflecting members, light-shielding members or fixed shades - F21S 41/141: Light emitting diodes [LED] - F21S 41/147: the main emission direction of the LED being angled to the optical axis of the illuminating device - F21S 41/25: Projection lenses - G02B 5/32: Holograms used as optical elements - F21S 41/255: Lenses with a front view of circular or truncated circular outline - F21W 2102/18: for overhead signs - F21Y 2115/10: Light-emitting diodes [LED] - G03H 1/2202: {Reconstruction geometries or arrangements} - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED - G03H: HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G02B5/32; producing stereoscopic or other three-dimensional effects G02B30/00; diffraction-grating systems G02B27/44; systems using moiré fringes G02B27/60; optical logic elements G02F3/00; stereo-photography G03B35/00; photosensitive materials or processes for photographic purposes G03C; {stereo-photographic or similar processes G03C9/00}; apparatus for processing exposed photographic materials G03D; analogue computers performing mathematical operations with the aid of optical elements G06E3/00; authentication by radiation, of concealed information carried by holograms or diffraction gratings G06K19/16; holographic storage G11B7/0065, G11C13/04; {stereoscopic or other three dimensional effects in television systems H04N13/00}) ## Abstract The invention proposes a lighting module for motor vehicles, which comprises optical means for deviating in angular manner at least a portion of the light rays passing through them, without thereby changing the geometry of the projection lens of the lighting module. ## Claims ### Claim 1 Lighting module for a motor vehicle, the module comprising: a first light source configured to produce a first lighting function of the motor vehicle, and a projection lens disposed downstream of the first light source, wherein the module comprises a screen provided with diffraction patterns, the screen being disposed between the focal plane of the lens and the projection lens, such that when the first light source emits light rays at least a first portion of the light rays coming from the first light source pass through the screen to produce a second lighting function deviated upwardly in a direction from a direction of the first lighting function, and a second portion of the light rays coming from the first light source do not pass through the screen to produce the first lighting function. ### Claim 2 (depends on 1) Lighting module according to claim 1, wherein the diffraction patterns include patterns which deviate in angular manner the light rays coming from the first light source and passing through the screen. ### Claim 3 (depends on 1) Lighting module according to claim 1, wherein the diffraction patterns include patterns which diffuse the light rays coming from the first light source passing through the screen. ### Claim 4 (depends on 1) Lighting module according to claim 1, wherein: the module comprises a second light source configured to produce a third lighting function of the motor vehicle, and when the second light source emits light rays, the light rays coming from the second light source likewise pass through the lens of the module. ### Claim 5 (depends on 4) Lighting module according to claim 4, wherein at least a portion of the light rays coming from the second light source pass through the screen. ### Claim 6 (depends on 4) Lighting module according to claim 4, wherein the module comprises a second screen, provided with diffraction patterns, the screen being disposed between the focal plane of the lens and the projection lens, such that at least a portion of the light rays coming from the second light source pass through the second screen. ### Claim 7 (depends on 6) Lighting module according to claim 6, wherein the first and the second screen are delimited by an edge which coincides with the predetermined contour created by the bending element which divides the beams coming from the first and the second light source respectively. ### Claim 8 (depends on 4) Lighting module according claim 4, wherein the beams produced respectively by the light rays coming from the first and the second source are separated by a bending element which divides the beams according to a predetermined contour. ### Claim 9 (depends on 8) Lighting module according to claim 8, wherein the screen or screens may be disposed at a distance between 0.1 and 0.5 mm from the edge of the bending element which is oriented in the direction of the lens. ### Claim 10 (depends on 4) Lighting module according to claim 4, wherein one of the light sources produces a “high beam” lighting function. ### Claim 11 (depends on 4) Lighting module according to claim 4, wherein one of the light sources produces a “low beam” lighting function. ### Claim 12 (depends on 1) Lighting module according to claim 1, wherein the portion of the screen or the screen through which pass the light rays coming from the first source and the portion of the screen or the screen through which pass the light rays coming from the second source include different diffraction patterns. ### Claim 13 (depends on 1) Lighting module according to claim 1, wherein the diffraction patterns are holographic patterns. ### Claim 14 (depends on 13) Lighting module according to claim 13, wherein the screen is glued to one edge of said surface of the lens. ### Claim 15 (depends on 1) Lighting module according to claim 1, wherein at least one of the screens is glued onto the surface of the lens facing the light source. ### Claim 16 (depends on 1) Lighting module according to claim 1, wherein the light source or sources comprise semiconductor elements, especially light-emitting diodes (LED).