# US 12,222,498 B2 · Method for influencing light beams in the interior of a motor vehicle, and motor vehicle for carrying out the method and mirror bank for such 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 12,222,498 B2 - Document ID: US12222498B2 - Status: Granted - Kind: B2 - Application number: 17/474,823 - Filed: 2021-09-14 - Published: 2021-12-30 - Granted: 2025-02-11 - Earliest claimed: 2019-03-14 - Assignees: Volkswagen Aktiengesellschaft - Applicants: Volkswagen Aktiengesellschaft - Inventors: Stefan Franke; Claudia Krefter-De Beer; Klaus Zander - Web page: https://patentgrep.com/patent/US12222498B2 ## CPC - B60K 35/415: {Glare prevention} - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - B60K 35/22: Display screens - B60K 35/231: characterised by their arrangement or structure for integration into vehicles - B60K 35/425: {Anti-reflection arrangements} - B60K 35/60: Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) - B60K 35/81: for controlling displays - B60K 2360/23: using reflectors - B60K 2360/25: using filters - B60K 2360/60: Structural details of dashboards or instruments - G02B 27/286: {for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another (G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34)} - G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility} - G02B 2027/012: {comprising devices for attenuating parasitic image effects} - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A method for influencing light beams in the interior of a motor vehicle. The light beams come from the direction of a mirror bank associated with a head-up display. Different approaches are provided for providing an enhanced display option and simultaneously reducing a dazzling of a vehicle occupant by unwanted reflections. The light beams are generated in the mirror bank, wherein some of the generated light beams are blocked in the region of the mirror bank in such a way that a particular keep-clear region is created into which reflected light beams can no longer enter, or generated light beams in the region of the mirror bank are directed without reflection onto a particular viewing region, or the generated light beams in the region of the mirror bank are polarised and only such polarised portions of the light beams that cause no or only negligible reflections exit the mirror bank. ## Claims ### Claim 1 A method for influencing light beams in a passenger compartment of a motor vehicle, wherein the light beams enter the passenger compartment coming from a direction of a mirror bank associated with a head-up display, the method comprising: generating the light beams in the mirror bank, wherein: a portion of the generated light beams in a region of the mirror bank, that are reflected at a windshield and/or at a cover of the head-up display, are blocked such that a specific keep-clear region is created into which the portion of the generated light beams no longer enter, the keep-clear region being associated with an eye point of the motor vehicle driver, such that, with respect to a light transmission direction, the keep-clear region is located downstream of points at which the portion of the generated light beams were reflected at the windshield and/or at the cover of the head-up display; or the generated light beams in the region of the mirror bank are oriented such that the generated light beams only enter a specific viewing region with no reflection at a windshield and/or at a cover of the head-up display; or the generated light beams in the region of the mirror bank are polarized in such that only polarized components of the generated light beams that are not reflected at a windshield and/or at a light-transmitting cover of the head-up display, but instead are transmitted, emerge from the mirror bank, wherein the generated light beams in the region of the mirror bank are oriented such that, viewed in a vertical plane, a light cone with a region of 10° to 18°, 12° to 16°, or 14° is produced, and wherein the light cone that is produced has a luminance distribution in which a luminance is maximal at an axis of a main direction of emission and in which the luminance decreases continuously to both sides of the main direction of emission. ### Claim 2 (depends on 1) The method according to claim 1, wherein the luminance remains only in a range from one ninth to one eleventh of the maximum of the luminance in a region of 6° to 8° to the sides of the main direction of emission. ### Claim 3 A motor vehicle, the motor vehicle comprising: a windshield; and at least one mirror bank arranged below the windshield, the at least one mirror bank being associated with a head-up display; at least one display device that extends in a longitudinal direction of the at least one mirror bank is arranged in the at least one mirror bank, the at least one display device adapted to emit light beams toward a passenger compartment of the motor vehicle, wherein: the at least one mirror bank has, on a front side facing the passenger compartment, a recess extending in the longitudinal direction of the at least one mirror bank, and a light-emitting surface of the at least one display device is embedded in the recess such that the light-emitting surface is set back at a distance with respect to front boundary lines of the recess, or the at least one display device has directing optics, or the at least one display device is equipped with a polarizing filter, and wherein the at least one mirror bank occupies at least a majority of a width of the windshield. ### Claim 4 A mirror bank for a motor vehicle, the mirror bank comprising: a display device extending in a longitudinal direction of the mirror bank and being arranged in the mirror bank, the display device adapted to emit light beams toward a passenger compartment of the motor vehicle, wherein: the mirror bank has, on a front side facing the passenger compartment, a recess extending in the longitudinal direction of the mirror bank, and a light-emitting surface of the display device is embedded in the recess such that the light-emitting surface is set back at a distance with respect to front boundary lines of the recess, or the display device has directing optics with which light beams that are adapted to be emitted by the display device are radiated in a specific light cone, or the display device is equipped with a polarizing filter, wherein the mirror bank is arranged below a windshield of the motor vehicle and is associated with a head up display, and wherein the at least one mirror bank occupies at least a majority of a width of the windshield. ### Claim 5 (depends on 4) The mirror bank according to claim 4, wherein the recess is formed as an elongated slot. ### Claim 6 (depends on 4) The mirror bank according to claim 4, wherein the recess is U-shaped in cross-section, with a first wall, a second wall, and a bottom that is formed by a light-emitting surface of the display device.