Classifications

• • 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
  • G02B27/0149—Head-up displays characterised by mechanical 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
  • G02B27/01—Head-up displays
  • G02B27/0101—Head-up displays characterised by optical features
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
  • G03B21/00—Projectors or projection-type viewers; Accessories therefor
  • G03B21/14—Details
  • G03B21/145—Housing details, e.g. position adjustments thereof
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
  • G03B21/00—Projectors or projection-type viewers; Accessories therefor
  • G03B21/14—Details
  • G03B21/30—Details adapted to collapse or fold, e.g. for portability
• • 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
  • G02B27/0149—Head-up displays characterised by mechanical features
  • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
• • 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
  • G02B27/0149—Head-up displays characterised by mechanical features
  • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
  • G02B2027/0159—Head-up displays characterised by mechanical features with movable elements with mechanical means other than scaning means for positioning the whole image
• • 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
  • G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation

Definitions

• the invention relates to a display device, in particular a head-up display, in particular for a motor vehicle.
• Such a device displays in the field of vision of the automobile driver looking in the direction of the vehicle windshield a virtual image.
• This display device generally comprises an image generation device and optical components specific to the architecture of the device.
• Such a device provides information of a general nature to the driver, for example the speed of the vehicle, the outside temperature, guidance indications, the engine speed, etc.
• a head-up display that produces a virtual image by means of a semi-reflecting blade called "combining" projecting from the dashboard.
• This combination is generally mounted retractable under the dashboard so that in particular, to be protected from mechanical stresses, weather conditions and dust when the display is not used.
• the size of the display is impacted by the place that must remain free to allow such a retraction despite the presence, in the vicinity, of the image generation device and the associated optical components.
• the invention aims to improve such a display and proposes in this sense a display, including head-up display, for displaying in the field of vision of a vehicle driver a virtual image, said display comprising a semi-reflective blade to display said virtual image and one or more optical projection elements of an image in the direction of said semi-reflective plate, said display being configured to allow movement of said one or more optical elements so as to allow said semi-reflective blade to be retracted.
• reflective when the display is off, according to a path passing through a location of said one or more optical elements, when the display is in operation.
• the retraction of the semi-reflective blade is associated with a displacement of the or at least one of the components of the display being in the vicinity when the display is in operation, these components are not in fact constrained at a fixed geometric position when the display is at a standstill and can be moved from their geometric position to make room for the retraction of the semi-reflective blade. Said retraction is thus less constrained in space by the geometric position of said components.
• said display is configured to protect said semi-reflecting plate, after retraction,
• said display comprises a hood, cap or casing protecting said reflecting plate from external shocks and / or dust, after retraction,
• said housing is an insulating enclosure configured to protect said semi-reflecting plate from climatic variations, in particular condensation, after retraction,
• said housing houses said optical element or elements
• said semi-reflecting plate and the or at least one of said optical elements are mounted on one or more kinematic displacement devices allowing, when the display is at a standstill, their displacement for said retraction of the semi-reflective plate from a commissioning position to a retracted position of the semi-reflective blade and / or vice versa,
• said kinematic devices are configured to allow a combined movement of the semi-reflective plate and the or at least one of said optical elements, in particular from the commissioning position to the retracted position of the blade semi-reflective and / or vice versa,
• the one or more kinematic devices are capable of driving successively and / or simultaneously said semi-reflecting plate and the or at least one of said optical elements, in particular of the position of commissioning of the display at the position of retraction of the semi-reflective blade and / or vice versa,
• optical elements comprise an image generation device and, optionally, optical transmission components of said images,
• said image generation device and / or at least one of said optical image transmission components are movable from the display commissioning position to a position releasing space to allow said retraction of the semi-reflective blade and / or vice versa,
• said image generation device is rotatable, in particular around an axis passing through said image generation device,
• optical transmission component or components are fixed
• said semi-reflecting plate is articulated in a rotational movement about a remote axis, for example parallel to the axis of rotation of said image generating device,
• the kinematic drive device for the semi-reflecting blade is positioned laterally to the image-generating device
• said display comprises a control unit able to drive the drive of said kinematic device or devices
• said device comprises positioning stops of said semireflecting plate and / or of said mobile optical elements, in the commissioning position, which favors good image formation.
• Figure 1 is a partial schematic elevational view of an image display device according to the invention, in the commissioning position;
• Figures 2 and 3 are similar views of the display device of Figure 1, the combination being in the process of retraction;
• Figure 4 is a view similar to the previous showing the display in the retracted position of the combine.
• the invention relates to a display 1, also called head-up display, for displaying a virtual image in the field of view of a vehicle driver observing the scene at the front of the motor vehicle through the windshield,
• the display 1 comprises a semi-reflecting plate 5 for displaying said virtual image and one or more optical elements 3, 7 for projecting an image in the direction of said reflecting plate.
• the at least one image projection optical element comprises in particular an image generation device 3.
• This device comprises, for example, a scanning projector provided with one or more light sources, not shown, each emitting a beam of the laser type.
• These are, for example, laser sources, typically laser diodes, each laser source emitting a monochromatic beam, i.e., consisting of a single color.
• Said device 3 may typically comprise three sources. It is configured to form a light beam by means of a pooling of beams individually emitted by each of said sources.
• Said scanning projector may also comprise a scanning generator whose function is to move the light beam horizontally and vertically to form an image at the output of said image generation device 3, at a surface such that, in particular, a diffuser.
• said display Downstream of the image generation device 3, according to the direction of movement of the light beam, said display comprises here another component of said optical projection element or elements, namely an optical component 7 for transmitting said images, and said semi-reflecting plate 5, also called “combine”.
• Said optical transmission component 7 makes it possible to reflect the rays emitted by the image generation device 3 to combine it. It could be a mirror.
• Said combination makes it possible to display the image beyond the windshield of the equipped vehicle, at a virtual screen, obtained with the aid of said semireflecting blade.
• said display is configured to move said projection optical element or elements 3, 7 so as to allow said reflecting plate 5 to be retracted, when the display is at a standstill, along a path passing through a location of said optical element or elements, here of the image generator 3, when the display is in operation.
• said image projection optical elements which are normally fixed, are made mobile in such a way as to dodge for the passage of the semi-reflecting blade 5.
• the semi-reflecting plate 5 can retract along a short path, according to a simple kinematic, which will not be constrained by the location of the optical elements of the display.
• Said display 1 is more precisely configured to protect said semi-reflecting plate 5 after retraction. It comprises for this purpose a cover, a cap or a housing 9, as shown, defining a housing for said reflecting plate 5 and protecting it from external shocks and / or dust, after retraction.
• Said housing 9 is advantageously an insulating enclosure configured to protect said semi-reflecting plate 5 from climatic variations, in particular condensation, after retraction,
• the housing 9 further houses the said projection optical element or elements 3, 7, which are thus also protected,
• Said semi-reflecting plate 5 and the or at least one of said optical elements, the image generator 3 here, are mounted on one or more kinematic displacement devices not shown, allowing, when the display is off , their displacement for said retraction of the semi-reflecting plate 5, as shown in particular in FIG. 3, this from a commissioning position, FIG. 1, to a retracted position of the semi-reflecting plate, FIG. 4, and / or vice versa.
• the one or more kinematic devices are configured to allow a combined movement of the semi-reflecting plate 5 and the or at least one of said optical elements, here of said image generator 3, from the commissioning position to the retracted position of the semi-reflective blade 5 and / or vice versa. They can be in the form of a kinematic device common, for example, a triangulated assembly or pantograph or other device supporting the reflecting plate 5 and / or the optical element or 3 of the display.
• the one or more kinematic devices can successively and / or simultaneously drive said semi-reflective plate 5 and the optical element (s) 3, in particular from the operating position of the display to the retracted position of the semi-reflective blade and / or vice versa,
• said image generation device 3 is rotatable about an axis passing through said image generation device 3.
• This axis d is in the plane of the vehicle, c that is substantially horizontal under normal vehicle running conditions.
• the optical transmission component or components, namely the mirror 7 here, are fixed.
• the optical mirror of the display could be movable to allow to retract said semi-reflective plate when the display is stopped. This possibility is to consider depending on the shape of the reflective blade and the volume available to house the latter under the dashboard of the vehicle.
• Said semi-reflecting blade 5 is hinged in the example, in a rotational movement about an axis distant from itself, for example parallel to the axis of rotation d of said image generation device and located at above it. More specifically, it is secured to a support device 11, lower, adjacent laterally to the image generation device 3.
• This support device 11 is itself integral with the kinematic device for moving the semi-reflecting blade 5 of the commissioning position, substantially vertical, at the stop of the display, at said retracted position 4. In the latter position, the semireflecting blade 5 is here just above the image generation device 3, or even against the latter, while being protected in the housing 9 of the display.
• This kinematic and / or support device 11 of the semi-reflecting blade positioned here laterally to the image generating device, can take the form of a linkage or a pantograph driven by an electric motor.
• Said display may further comprise a control unit adapted to control the drive of said kinematic device or devices, here the drive of the image generation device 3, via their electric motor.
• the semi-reflecting plate could be mounted on an optical component of the display, in practice on a support of one of the optical elements, for example a support of a reflecting mirror of the light beam the output device of the image generation device, this optical element then being movable to drive the semi-reflecting plate 5, at the display stop, from a commissioning position to a retracted position of the semi blade. -reflective 5 and vice versa.
• the movements of the optical element (s) will preferably be made by one or more electric motors controlled by the control unit.
• the invention thus provides a vehicle display which makes it possible in particular to simplify the retraction kinematics of the semi-reflecting blade or to combine.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Instrument Panels (AREA)
• Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2013
  • 2013-06-28 FR FR1301527A patent/FR3007852B1/fr active Active
• 2014
  • 2014-06-27 JP JP2016522690A patent/JP2016525701A/ja active Pending
  • 2014-06-27 EP EP14747060.3A patent/EP3014354A1/de not_active Withdrawn
  • 2014-06-27 US US14/898,528 patent/US10203500B2/en active Active
  • 2014-06-27 WO PCT/FR2014/000151 patent/WO2014207329A1/fr active Application Filing
  • 2014-06-27 CN CN201480042763.0A patent/CN105849634B/zh active Active
• 2019
  • 2019-06-05 JP JP2019105547A patent/JP6780061B2/ja active Active

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