Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
  • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
  • B60K35/23—Head-up displays [HUD]
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/40—Instruments specially adapted for improving the visibility thereof to the user, e.g. fogging prevention or anti-reflection arrangements
  • B60K35/415—Glare prevention
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/40—Instruments specially adapted for improving the visibility thereof to the user, e.g. fogging prevention or anti-reflection arrangements
  • B60K35/425—Anti-reflection arrangements
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/01—Head-up displays
  • G02B27/0101—Head-up displays characterised by optical features
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
  • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
  • B60K2360/20—Optical features of instruments
  • B60K2360/23—Optical features of instruments using reflectors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
  • B60K2360/20—Optical features of instruments
  • B60K2360/25—Optical features of instruments using filters
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
  • B60K2360/60—Structural details of dashboards or instruments
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • 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
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/80—Arrangements for controlling instruments
  • B60K35/81—Arrangements for controlling instruments for controlling displays
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/01—Head-up displays
  • G02B27/0101—Head-up displays characterised by optical features
  • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
  • G02B27/01—Head-up displays
  • G02B27/0101—Head-up displays characterised by optical features
  • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
  • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects

Definitions

• the invention relates to a method for influencing light beams in the interior of a motor vehicle with the features of the preamble of claim 1.
• the invention also relates to a motor vehicle for carrying out the method and a mirror bench for such a motor vehicle.
• DE 10 2014 019 160 A1 shows a method for reducing a reflection when operating a head-up display of a motor vehicle.
• the head-up display has a cover element and a masking element for masking out a deflected one
• a control device determines a beam path of the deflected light beam, detects a current position and an orientation of the shielding element and determines an area around an eye point of a vehicle occupant that is to be kept free of the deflected light beam. If the deflected light beam passes through the area to be kept clear, the control device generates a control signal for setting a position of the shielding element in which the deflected light beam is shielded.
• DE 10 2014 019 039 A1 describes a head-up display for a motor vehicle with a transparent cover pane and a projection unit for projecting an image onto a projection surface.
• the projection surface is located on the front window of the motor vehicle.
• the cover disk is designed to provide an external contact with the
• the cover plate is designed in such a way that light falling on it from outside is deflected onto an absorption surface of an absorption plate.
• a solar cell arrangement is present at the absorption surface.
• DE 10 2010 032 998 A1 reveals a head-up display for a motor vehicle, via which an image to be displayed is also shown on a windshield is projectable.
• a projection device of the head-up display has a semitransparent cover which is directed towards the windshield and which is designed to reflect extraneous light striking the cover from outside on an absorber surface.
• the absorber surface is formed by a coating on the inside of the front pane.
• the present invention is based on the object of providing a method for influencing light rays in the interior of a motor vehicle, with which, on the one hand, expanded display options for a vehicle occupant can be implemented, but with which, however, at the same time, glare due to reflections of light beams in spite of the expanded display options in Limits can be kept.
• the invention is also based on the object of providing a motor vehicle for carrying out the method.
• the invention is also intended to be a suitable one
• Mirror bench are made available for installation in such a motor vehicle.
• a mirror bench In connection with a head-up display, a mirror bench is used in particular to protect a vehicle occupant from undesired reflections. Such reflections can arise, for example, from solar radiation that is reflected on the cover of the head-up display and / or on the front window and into one eye of the
• the cover of the head-up display is curved so that the light rays falling from the outside onto the cover always fall on the mirror bench.
• the inside of the mirror bench is mostly black-matt in order to absorb incident light. The mirror bench therefore serves as a light trap for incident light.
• the invention is initially based on a method for influencing light beams in the interior of a motor vehicle.
• the light beams come from the direction of a mirror bank assigned to a head-up display into the interior.
• the method is now designed in such a way that the light beams are generated in the mirror bank, • whereby some of the light rays generated are blocked in the area of the mirror bench. This is done in such a way that a certain free area is created, into which light rays generated in the mirror bench and reflected on a front pane and / or on a cover of the head-up display can no longer enter or
• the alignment takes place in such a way that the light beams can only enter a certain viewing area without being reflected on a front pane and / or on a cover of the head-up display
• the generated light beams are polarized in the area of the mirror bench.
• the polarization of the light beams is carried out in such a way that only those polarized portions of the light beams emerge from the mirror bank which are at a
• Reflective surface such as the windshield of a motor vehicle and / or on a transparent cover of the head-up display, are not or hardly reflected, but rather let through.
• the above-mentioned free area is preferably formed as a radius around an eye point of a front passenger. Such a free area can for example be about 20 centimeters.
• the above-mentioned viewing area can be formed analogously.
• the light beams be aligned in the area of the mirror bench in such a way that, viewed in a vertical plane, a light cone with a range of approximately 10 degrees to approximately 18 degrees, preferably of approximately 12 degrees to approximately 16 degrees, is created. Particularly preferably, a light cone of approximately 14 degrees is formed.
• Such a design can ensure that a vehicle occupant is not or barely dazzled.
• the light cone formed has a luminance distribution in which a luminance on the axis of a main emission direction is at a maximum and in which the luminance drops continuously on both sides of the main emission direction.
• the luminance in a range of approximately 6 degrees to 8 degrees, preferably in a range of approximately 7 degrees on both sides of the main emission direction is only in a range of a ninth to an eleventh, preferably in a range of a tenth from the maximum of the luminance.
• the invention is also intended to provide a motor vehicle for carrying out the method according to the invention.
• a motor vehicle has a front window and at least one mirror bench which is arranged below the front window and which is assigned to a head-up display.
• At least one display device extending in the longitudinal direction of the mirror bench is now arranged in the mirror bench.
• the display device preferably extends over the entire or almost the entire length of the mirror bench.
• the display device can emit light beams in the direction of an interior of the motor vehicle,
• the mirror bench has on its front side facing in the interior a recess running approximately in the longitudinal direction of the mirror bench.
• the light exit surface of the display device is embedded in the recess in such a way that the light exit surface is at a distance from the front boundary lines of the recess facing a vehicle occupant (for example, the driver)
• the display device has a directional optics.
• the directional optics With the directional optics, light beams emitted by the display device can be aligned in such a way that they are directed to a specific viewing area around an eye point of a front window without a reflection on a front pane and / or on a cover of the head-up display
• Vehicle occupants can get or • the display device being provided with a polarization filter.
• the light beams generated by the display device in the area of the mirror bench can be polarized in such a way that only those polarized portions of the light beams emerge from the mirror bench in the direction of the interior that are on a reflective surface, such as on the front pane and / or on a translucent surface
• the head-up display is not or hardly reflected, but rather
• the mirror bench takes up at least a large part of a width of the windshield, the prerequisites are created for the vehicle occupants to be provided with a unique display device.
• a mirror bench is to be placed under protection, which can be installed in such a motor vehicle and with which the
• Such a mirror bench is by one in a longitudinal direction of the mirror bench
• the light exit surface is set back at a distance from the front boundary lines of the recess, which are therefore facing a vehicle occupant, such as the driver or front passenger
• Display device emitted light rays are emitted in a certain cone of light or
• the display device being provided with a polarization filter.
• the display device preferably extends over the entire or almost the entire length of the mirror bench.
• the recess is designed like a gap. On the one hand, this contributes to an original lighting effect when the Display device, on the other hand, this helps that unwanted light beams can be blocked more easily.
• the recess is U-shaped in cross section. It has a first wall, a second wall and a base, the base being formed by a light exit surface of the display device.
• FIG. 1 shows a part of a motor vehicle designed according to the invention in the area of a windshield, from above.
• FIG. 1 Sectional views according to section II from FIG. 1, with an alternative
• FIGS. 2a and 2b shows a detailed representation according to detail III from FIGS. 2a and
• FIG. 4 shows a possible luminance distribution of a light cone, as it is generated in FIG. 2b.
• FIGS. 1 and 2a A motor vehicle K can be seen in the area of a front window 400.
• the motor vehicle K is equipped with a so-called head-up display (HUD) 200, which in the present exemplary embodiment extends over a large part of a width B of the motor vehicle K or the windshield 400.
• HUD head-up display
• the head-up display 200 is used to project information in the direction of or onto the windshield 400.
• the head-up display 200 has a projection device 204 which is accommodated in a housing 203 and which extends upward through a
• cover panel 202 for covering the head-up display 200 is opposite a
• the head-up display 200 is embedded in an instrument panel 100.
• a mirror bench 300 is assigned to the head-up display 200 and is arranged in front of the head-up display 200 and is directly adjacent to the front pane 400.
• the cover 201 is curved and, in addition to protecting the interior of the head-up display 200, serves to guide extraneous light (for example sunlight) falling on the cover 201 in the direction of the mirror bench 300.
• the mirror bench 300 absorbs the light almost completely, so it is designed as a mirror trap.
• the mirror bench 300 for its part extends with a longitudinal direction LR over the entire or almost the entire width B of the front pane 400.
• the gap-like depression 303 in turn extends in the longitudinal direction LR of the mirror bench 300 over its entire or almost entire length.
• the recess 303 is arranged or else in the area of a display device 305 embedded in the mirror bench 300
• Information can be passed on to a vehicle occupant, for example in the form of animations, via a multiplicity of lighting means 302 arranged horizontally next to one another, which are preferably designed as light-emitting diodes.
• a device for the corresponding control of the lighting means 302 is not shown in more detail.
• the Control can take place as a function of certain driving and operating states of the motor vehicle K.
• Light beams L1, L2 and L3 are shown by way of example, which are generated or can be generated by the display device 305 or by its lighting means 302. Starting from the display device 305, in particular from the gap-like depression 303, these pass in the direction of an interior I of the motor vehicle K.
• the light beam L3 thus shows a light beam falling directly onto the eye point 500, which thus means a direct view of the display device 305 for the vehicle occupant. This is desirable.
• the light beam L1 shows a light beam which is reflected once on the windshield 400 and then continues as a reflected light beam L1 'in the direction of the vehicle occupant.
• the light beam L2 shows a light beam which is first reflected on the cover 201 in the direction of the windshield 400, then again on the windshield 400 and finally further in the direction of the vehicle occupant as a multiple mirrored image
• the gap-like depression 303 is therefore designed in such a way that such undesired beam paths do not enter a holding-free area 501 around the eye point 500 of the
• Light beams L1 'and L2' represent the limit within which no other light beams get into the free area 501.
• the present technical solution therefore does not serve in particular to completely avoid undesired single and multiple reflections. Rather, the solution is intended to limit only those reflections of light beams generated in the display device 305 which would fall into the free area 501 without the gap-like depression 303.
• the area of the mirror bench 300 around the gap-like depression 303 is shown in more detail in cross section.
• the recess 303 extends from the
• the cross section of the gap-like recess 303 is rectangular or U-shaped, with a upper wall 308, a lower wall 309 and with a base 310 of the recess 303.
• the bottom 310 of the recess 303 is in the present solution by a
• Light exit surface 311 of the only indicated display device 305 is formed.
• the light exit surface 311 is therefore set back at a distance a1 from the front side 301 or front boundary lines 312, 313 of the recess 303 and is thus embedded in the mirror bench 300.
• the height of the gap-like depression 303 that is to say a distance a2 between the walls 308 and 309, should be dimensioned so that the
• Light exit surface 311 is still sufficiently visible to a vehicle occupant.
• the distance a2 can be several millimeters, for example.
• the distance a1 is to be set or optimized in such a way that the beam paths falling into the interior space I with the aforementioned single and multiple reflections cannot fall into the aforementioned free area 501.
• the walls 308, 309 and also the base 310 of the recess 303 and also the mirror bench 300 itself are made of a dark, matt material or are coated accordingly in order to limit reflections to a minimum.
• motor vehicle K is equipped with a mirror bench 300 '.
• the mirror bench 300 ′ is not equipped with a gap, but the display device 305 is provided with directional optics 304 connected downstream of the lighting means 302.
• the directional optics 304 By means of the directional optics 304, light beams L emerging from the display device 305 are aligned in the direction of a viewing area 502. In particular, the
• Directional optics generates a cone of light 600 which on all sides of a main emission direction 601 has an emission angle a of preferably approximately 7 degrees in each case.
• Main emission direction 601 aligned approximately with an eye point 500 of a vehicle occupant of average size. Said viewing area 502 is well imaged through the entire angular range of the light cone 600 of approximately 14 degrees.
• the light cone 600 has a large one
• a luminance LD is plotted over the radiation angle a.
• the light cone 600 has a luminance distribution LDV, which in a Emission angle a of 0 degrees, that is to say has its maximum value in the main emission direction 601.
• the luminance LD falls significantly below the maximum value of the luminance LD and at a radiation angle a of about 7 degrees, deviating from the main radiation direction 601, drops to less than a tenth of the maximum luminance LD off. Because of this large decrease in luminance, reflections of light beams also occur outside the light cone 600, but these are barely perceptible to a vehicle occupant due to the extremely low luminance.
• the motor vehicle K has a mirror bank 300 ′′
• Mirror bench 300 ′′ does not have a gap-like depression, but is provided with a display device 305 which has a light exit surface 306 with a polarization filter 307.
• both the display device 305 of the mirror bench 300 'and the display device 305 of the mirror bench 300 ′′ have a light exit surface which, like the light exit surface 311 of the mirror bench 300, is designed like a line or strip and extends horizontally in the longitudinal direction LR of the mirror bench.
• the light exit surface 306 is additionally covered with the polarization filter 307.
• the polarization filter 307 can, for example, be designed in the form of a film and glued onto the light exit surface 306.
• the polarization filter 307 now results in that generated by the lighting means 302
• Light rays are filtered in such a way that they only have a polarization component.
• the polarization filter 307 allows only that polarization component of the generated light rays to pass through which is not or hardly reflected at the reflection surfaces, but is allowed to pass through.
• two light beams L4 and L5 filtered by the polarization filter 307 are shown by way of example in the figure.
• the light beams L4 and L5 are filtered so that they are at
• step through A remaining portion of the residual reflection of the light rays (compare L4 'and L5') is so small that it is no longer perceived as annoying when it hits an eye point 500 of a vehicle occupant.
• HUD head-up display

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Instrument Panels (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2019
  • 2019-03-14 DE DE102019203500.0A patent/DE102019203500A1/de active Pending
• 2020
  • 2020-03-06 KR KR1020217032440A patent/KR102558435B1/ko active IP Right Grant
  • 2020-03-06 WO PCT/EP2020/056079 patent/WO2020182678A1/de active Application Filing
  • 2020-03-06 JP JP2021551962A patent/JP7257542B2/ja active Active
  • 2020-03-06 EP EP20713190.5A patent/EP3938229A1/de active Pending
  • 2020-03-06 CN CN202080020733.5A patent/CN113518724A/zh active Pending
• 2021
  • 2021-09-14 US US17/474,823 patent/US20210405364A1/en active Pending

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