• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a display (1) comprising - a housing (10), - an image generation unit (20), and - a light sensor (30) disposed inside (INT) of said housing ( 10), adapted to deliver a signal representative of a light intensity that it receives, the display (1) being adapted so that the brightness of an image generated by the image generation unit (20) is controlled according to said signal. According to the invention, the display (1) further comprises a light guide (50) located inside (INT) of the housing (10) of the display (1), having an input face (51). ) and shaped to collect at its input face (51) light radiation from outside the housing (10) of the display, and to guide said light radiation to said sensor (30).
    公开号:FR3050542A1
    申请号:FR1653673
    申请日:2016-04-26
    公开日:2017-10-27
    发明作者:Francois Grandclerc；Pierre Mermillod
    申请人:Valeo Comfort and Driving Assistance SAS；
    IPC主号:
    专利说明:

    Display comprising a light sensor
    Technical field to which the invention relates
    The present invention relates to a display, in particular a head-up display.
    It relates more particularly to a display comprising: - a housing, - an image generation unit, and - a light sensor, disposed inside said housing, adapted to deliver a signal representative of a light intensity that it receives, the display being adapted so that the brightness of an image generated by the image generation unit is controlled according to said signal.
    It applies particularly interestingly in a motor vehicle.
    Technological background
    For the driver of a motor vehicle, it is particularly comfortable to be able to view information relating to the operation of the vehicle, the traffic status, or the like, without having to look away from the road facing the vehicle.
    It is known for this purpose to equip a motor vehicle with a so-called head-up display. In such a display, an image comprising the information to be displayed is generated by an image generation unit. This image is then superimposed visually on the environment facing the vehicle, by means of a partial reflection on a semitransparent blade in front of the driver, such as a combiner disposed between the windshield of the vehicle and the eyes of the driver.
    In order for the information thus displayed to be sufficiently bright to be correctly visualized, without risk of dazzling the driver, it is necessary to adapt the brightness of the image thus superimposed on the external environment of the vehicle to the brightness of this light. environment itself, which varies greatly between daytime driving and driving at night or in a tunnel.
    It is known for this purpose to provide the head-up display with a light sensor, a control unit then controlling the brightness of the image generated as a function of a signal acquired by the light sensor, so as to adapt the brightness of this image at ambient brightness.
    More particularly, it is known to arrange the light sensor inside a display housing. An opening is then made in the display housing so that a portion of the external light radiation enters the housing, to the light sensor. But the interior of the display housing is then visible to a user, thus degrading the external appearance of the display.
    Object of the invention
    In this context, the present invention provides a display as defined in the introduction, further comprising a light guide located inside the display housing, having an input face and shaped to collect at its face. inputting light radiation from outside the display housing, and for guiding said light radiation to said sensor.
    It is interesting to have the light sensor inside the housing, especially to meet the electrical and mechanical connection constraints of this sensor.
    The light guide advantageously allows to deport the light sensor inside the housing of the display, without this making the inside of the housing visible to a user, which is particularly interesting in terms of exterior appearance of the display.
    The light guide also ensures efficient collection of light radiation from outside the display housing and whose light intensity is measured by the light sensor.
    The display housing has an opening through which said light radiation passes to reach the light sensor.
    According to an optional feature of the display, the entrance face of the light guide is located at this opening. The display then has an exterior appearance advantageously smooth and homogeneous.
    In addition, the light guide then prevents the entry of foreign bodies, such as dust particles, inside the display housing, and optimally hides, with respect to a user, the interior. of said housing.
    According to another optional feature, the display also comprises a projection optical assembly adapted to project the image generated by the image generation unit, towards a semi-transparent plate for, with the semi-transparent plate , forming a virtual image in the field of view of the user.
    We can then predict that the light guide is distinct from the semi-transparent plate. It can further be provided that the light guide is disjoint from the semi-transparent plate.
    It is preferable to avoid that a part of the light emitted by the image generation unit, and then reflected partly on the semi-transparent plate, does not reach said sensor, because this light would disturb the brightness measurement. ambient using this sensor.
    The fact that the light guide is separate or even disjoint from the semi-transparent plate advantageously prevents the light emitted by the image generation unit from reaching the light sensor.
    The Applicant has also found that when the display equips a vehicle, a secondary light radiation: - with abrupt and repeated variations in intensity, and - coming from outside the vehicle without coming from a region located in the driver's field of vision may be incident on the display.
    Such a situation is encountered especially during a journey of the vehicle in a tunnel provided with lighting devices arranged at regular intervals along the tunnel, or during the passage of the vehicle along suspension cables of a bridge or other construction elements arranged alternately along the path of the vehicle.
    The variations in light intensity of this secondary light radiation are then likely to be picked up by the light sensor, thus causing a parasitic variation, in this case a flickering, of the brightness of the image generated by the light unit. image generation.
    To remedy this drawback in particular, it can be provided that the light guide is shaped so that the light radiation that it is adapted to collect comes from an area located approximately in the direction in which said virtual image is formed.
    The light radiation, that is to say the light, from this area is perceived by the user when looking in the direction of said virtual image. It is therefore interesting that, thanks to this light guide, the sensor receives at least a portion of the light radiation from this area, in order to adapt the brightness of the virtual image to the brightness of its visual environment.
    The shaped light guide of this kind further selectively collects light from this area, removing light from other regions of the external environment of the display. Thanks to this selective nature of the light guide, the aforementioned flashing of the image generated by the display is then advantageously limited. Other nonlimiting and advantageous features of the display according to the invention are the following: said zone surrounds said virtual image; the entrance face of the light guide has an orientation adapted to deflect the light radiation coming from said zone by refraction so as to couple this light radiation in the light guide; the input face of the light guide is curved to selectively collect the light radiation coming from said zone; the entry face of the light guide is convex; the input face of the light guide is located, relative to the semi-transparent plate, on a side opposite to said virtual image; the housing has an external face; the housing has a recess at said outer face, the entrance face of the light guide being located at this recess; - The housing comprises a wall extending from this outer face towards the inside of the housing; the entrance face of the light guide is situated at the level of said wall; said wall extends in overhang with respect to said external face; the housing comprises a duct extending from said outer face towards the inside of the housing, the entrance face of the light guide being located at this duct; said duct is provided for the passage to the outside of the casing of a light radiation emitted by the image generation unit; said external face is located, with respect to the interior of the housing, on the same side of the housing as the semi-transparent blade in the use position; the light guide is disjoint from said sensor; - The display is adapted so that the brightness of the generated image is even greater than the luminous intensity received by said sensor is large; and the display constitutes a head-up display intended to equip a vehicle.
    Detailed description of an example of realization
    The following description with reference to the accompanying drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be achieved.
    In the accompanying drawings: - Figure 1 is a schematic sectional side view of a display embodying the teachings of the invention; and FIG. 2 is a schematic view of detail of zone II of FIG.
    Figure 1 shows schematically the main elements of a display 1, here a head-up display, intended to equip a vehicle, for example a motor vehicle, a train, a boat such as a barge, a tram or a bus. The display 1 comprises an image generation unit 20, comprising, for example, a backlighting device illuminating a liquid crystal display (or LCD) for thin-film transistors (or TFT for Thin-Film). Transistor").
    Here, the display 1 also comprises a projection optical assembly adapted to project an image generated by the image generation unit 20, towards a semi-transparent plate for, with the semi-transparent plate, forming a IMV virtual image in the field of view of a user. The IMV virtual image reproduces the image generated at the image generation unit 20.
    It is thus possible to display information in the user's field of vision without the latter having to look away. In practice, this user corresponds here to the driver of the vehicle. The optical projection assembly here comprises a folding mirror 60. Alternatively, it could comprise a plurality of mirrors and / or other optical elements.
    The semi-transparent plate is here implemented in the form of a combiner 70, that is to say a semi-transparent plate, disposed here between the windshield 2 of the vehicle and the eyes 3 of the driver .
    It can be alternatively provided that the projection optical assembly directly projects the image generated by the image generation unit towards the windshield of the vehicle, the aforementioned combiner then being omitted. In this case, the semi-transparent plate is thus implemented in the form of the windshield of the vehicle. The expression "semi-transparent blade" here designates a blade at least partially transparent, having a level of transparency between that of a completely transparent blade, and that of a completely opaque blade.
    In addition to being semi-transparent, this blade is semi-reflective, thus making it possible to send back to the user at least a portion of the light produced by the image generation unit 20, as shown schematically. in FIG. 1. The IMV virtual image, formed in the user's field of vision by the projection optical assembly and the semi-transparent plate, is located opposite the user with respect to the blade. semi-transparent, for example a few meters from the semi-transparent blade.
    Here, for the driver of the vehicle, the IMV virtual image is formed within the road environment facing the vehicle, thus superimposing visually to this environment.
    The direction in which the virtual image IMV is formed, that is to say the direction in which the virtual image IMV is located with respect to the display 1, is schematically indicated in FIG. 1 by the arrow F1. The display 1 also comprises a light sensor 30, such as a photodiode or a phototransistor, adapted to deliver a signal representative of a light intensity that it receives, and arranged to receive light radiation from the light source. Outside the display 1. The display 1 is adapted so that the brightness of the image generated by the image generation unit 20 is controlled according to the signal delivered by the light sensor 30.
    The brightness of the generated image can thus be adapted to an ambient brightness, measured by means of the sensor 30, which makes it possible to ensure the visibility of the IMV virtual image, even when the ambient luminosity varies.
    More precisely, the display 1 is adapted here so that the brightness of the image generated is even greater than the luminous intensity received by said sensor (30) is large.
    For this, the display 1 here comprises a control unit 40, programmed to control the brightness of the image generated by the image generation unit 20, as a function of the signal delivered by this sensor 30. , the control unit 40 is programmed to control the brightness of the generated image so that it is larger as the light intensity received by said sensor 30 is large.
    To thereby adapt the brightness of the generated image, it is intended here to control the average amplitude of an electric current, or of a voltage, of power supply of the backlighting device of the image generation unit. 20.
    Here, more precisely, the control unit 40 is programmed to modulate the pulse width of an electric supply current of the backlighting device of the image generation unit 20, so that the average intensity (Over time) this electric current is greater than the light intensity measured by the sensor 30 is large.
    The link between the light intensity measured by the sensor 30 and the corresponding average intensity, of the electric current applied to the backlighting device, is for example stored in the form of a correspondence table, in a memory of the lightning unit. order 40.
    As a variant, the control unit can be omitted, the control of the image generation unit then being carried out, in a manner comparable to that described above, by means of an electronic module external to the control unit. display. The display 1 also comprises a housing 10 in which are housed the image generation unit 20 and the deflection mirror 60.
    This casing 10, partially shown in FIG. 1, conceals from the user's eyes the elements of the display 1 housed in the casing 10, whereby the display externally presents a unified and homogeneous appearance. The housing 10 also protects these elements of the display 1 from foreign bodies such as dust.
    The housing 10 is formed of a plurality of optically opaque walls 11, 13, 14 separating the inside INT from the housing 10 from the outside thereof.
    The housing 10 comprises in particular an upper main wall 11 located on the side of the semi-transparent blade in the use position. In the position of use, the semitransparent plate, here the combiner 70, extends outside the housing 10, projecting from the upper main wall 11. This upper main wall 11 is here generally flat.
    The term "upper" designates elements, or parts of elements of the display, located, with respect to the housing 10 (more precisely with respect to the inside INT of the housing 10), of the same side of the housing as the semi-transparent blade in use position. Such elements, in particular the upper main wall 11, can thus be visible to the user. In the particular case where the display 1 is installed in the vehicle near a dashboard of the latter (on one side of the windshield 2 opposite to a roof of the vehicle), the term "upper" designates elements, or parts of elements of the display, located towards the top of the display 1, relative to an upward vertical direction.
    Optionally, the combiner 70 is movably mounted relative to the housing 10 between its use position and a retracted position, the combiner 70 in its retracted position being housed in the housing 10.
    The light sensor 30 is also housed in the housing 10 of the display. Here, more specifically, the light sensor 30 is located inside the housing INT, in the vicinity of the upper main wall 11 of the housing mentioned above.
    The light sensor 30 is fixedly mounted on a printed circuit board (not shown). To allow a greater freedom of positioning of the light sensor within the display, this printed circuit support plate is here distinct from another main printed circuit support plate of the display, to which it is connected by an electric cable. The main circuit board support plate of the display is for example used to mount the control unit 40 and / or the electronic components necessary for generating the electric current (here pulse width modulated) of the power supply. Image generation unit 20. The signal delivered by the light sensor 30 is transmitted to the main printed circuit support plate by means of the electrical connection mentioned above.
    The housing 10 has an opening 16 (visible in FIG. 2) permitting the passage, from the outside to the inside INT of the housing 10, of the light radiation received by the sensor 30.
    According to a particularly remarkable characteristic, the display 1 also comprises a light guide 50 situated inside the housing 10 of the display, having an input face 51 and shaped to collect at its input face. 51 a light radiation from the outside of the housing 10 of the display, and to guide said light radiation to 30 light sensor.
    This light guide 50 advantageously allows the light sensor 30 to be moved inside INT of the housing of the display 1, without rendering the inside INT of this housing visible to the user, which is particularly interesting. in terms of the external appearance of the display 1.
    Light guide 50 also provides an efficient collection of light radiation from outside the display housing 10, the light intensity of which is measured by the light sensor 30.
    The light guide 50 is here separate and disjoint from the semi-transparent plate. This prevents the light emitted by the image generation unit 20, which passes through or is reflected by the semi-transparent plate, to reach the light sensor 30. This arrangement is particularly interesting because if a portion of the light emitted by the image generation unit reaches the light sensor 30, it would disturb the ambient light measurement made by means of this sensor 30.
    The entrance face 51 of the light guide 50 is located here at the opening 16 in the housing 10 for the passage of the light radiation reaching the light sensor 30. More precisely, as can be seen in FIG. 2, the entrance face 51 of the light guide 50 is flush with the outside face 17 of the wall 15 of the housing in which this opening 16 is formed.
    The light guide 50 is shaped here so that the light radiation that it is adapted to collect comes from a zone Z1 located approximately in the direction in which the IMV virtual image is formed.
    The direction in which the zone Z1 is located, relative to the display 1, is indicated by the arrow F2 in FIG. 1. This direction is close to the direction in which said virtual image IMV is formed.
    The zone Z1 may, however, be slightly angularly offset from the IMV virtual image, for example by an angle of between 0 degrees and 45 degrees.
    Since the direction in which the zone Z1 is located is close to the direction in which the virtual image IMV is formed, the zone Z1 is located for the user, in the visual neighborhood of the virtual image IMV. Here, for example, from a visual point of view, the zone Z1 is situated slightly above the virtual IMV image, in the user's field of vision (as schematically illustrated in FIG. 1).
    The light coming from this zone Z1 is thus perceived by the user when he looks towards said IMV virtual image.
    With the light guide 50, at least a portion of the light radiation from this zone Z1 reaches the light sensor 30. The light guide 50 also prevents light from other regions of the external environment of the display 1 from reaching the light sensor 30.
    With this arrangement, the brightness of the virtual image IMV is adjusted according to the brightness of the zone Z1, which is located visually in the vicinity of this IMV image. This arrangement is therefore particularly interesting, since it ensures optimal visibility of the IMV virtual image for the user.
    Optionally, it can also be provided that the zone Z1 is not only located in a direction close to that in which the virtual image IMV is formed, but that this zone Z1 also surrounds said virtual image IMV. Otherwise formulated, it can be expected that the zone Z1 is located, in the environment facing the user, around the IMV virtual image.
    The fact that the light guide 50 selectively collects the light radiation from the zone Z1 is achieved in particular by appropriate positioning of the light guide 50, described in more detail below.
    For this purpose, it is possible here, for example, for the housing 10 to have an external face 12, and at this external face 12 a recess 100, the entry face 51 of the light guide 50 being situated at the level of This recess 100. Otherwise formulated, it can be provided that the housing 10 has, at this outer face 12, a portion extending recessed (said recess) relative to this outer face, forming a cavity or a duct. The entrance face 51 of the light guide 50, located at this recess 100 (set back from the outer face 12 of the housing 10 of the display 1), is then sheltered at least in part from a radiation illuminated, other than that from zone Z1, surrounding the display.
    To further enhance this effect, it can be provided as here that the wall 15, at which the input face 51 of the light guide is located, extends inward INT of the housing 10 in overhang relative to said outer face 12 of the housing, that is to say forming with the outer face 12 an acute angle less than 90 degrees. The outer face 12 of the housing then extends, relative to the inside INT of the housing 10, above the entry face 51 of the light guide, and thus partially houses the aforementioned light radiation.
    The entrance face 51 of the light guide 50 is located here more precisely on said wall 15, near the outer face 12 of the display housing, as illustrated in FIG. 2.
    Here, the display 1 also comprises a conduit 19 (Figure 1), extending from the outer face 12 of the housing towards the inside INT of the housing 10. This conduit 19 opens at the outer face 12 of the housing 10. This conduit 19 channels a light radiation emitted by the image generation unit 20 and returned to the combiner 70 by the projection optical assembly to form the IMV virtual image.
    The conduit 19 is formed of several walls 15, 15 ', 18, optically opaque. In particular, it avoids that a parasitic light radiation, other than that intended to form the IMV virtual image, leaves the display housing.
    The aforementioned wall 15, at which the inlet face 51 of the light guide 50 is located, corresponds here to one of the walls 15, 15 ', 18 forming this duct 19.
    Moreover, the outer face 12 above is located here, relative to the inside INT of the housing 10, on the same side of the housing 10 as the semi-transparent blade 70 in the use position. More precisely, this outer face 12 is presented here by the upper main wall 11 of the housing 10.
    The input face 51 of the light guide 50 is then positioned in a particularly well adapted manner, from an optical point of view, for collecting the light coming from a direction close to the direction of formation of the IMV virtual image, while being sheltered at best from other luminous radiations.
    In this configuration, the input face 51 of the light guide 50 is then, relative to the semi-transparent plate, a side opposite to the IMV virtual image.
    The light guide 50, positioned as described above, can now be described in more detail.
    The light radiation coming from the zone Z1 follows, in the light guide 50, an average propagation path c which connects the input face 51 of the light guide to an exit face 53 located opposite the sensor. 30 of light.
    The entry face 51 of the light guide 50 here has an orientation adapted to deflect this light radiation by refraction, so as to couple it in the light guide 50. Otherwise formulated, the light guide 50 here has a suitable orientation for modify by refraction the direction of average propagation of this radiation so that it coincides in the light guide with that defined the propagation path c.
    This refractive deviation is obtained by means of an inclination adapted to the input face 51, with respect to the direction in which zone Z1 is located.
    To enable this refractive deviation, the input face 51 is oriented obliquely, also with respect to the direction defined by the propagation path c (at the input face 51 of the light guide). The light guide 50 thus having a bevel shape at its inlet face 51.
    The propagation path c is here approximately rectilinear. Thus, the orientation of the input face 51 of the light guide is more precisely adapted, here, to deflect by refraction the light radiation from said zone Z1 towards the light sensor 30.
    In a variant not shown, it can be provided that the input face of the light guide is approximately perpendicular to the direction in which the zone Z1 is located as seen from the entry face 51, instead of being oriented obliquely. relative to this direction as in the embodiments described above. According to this variant, during its entry into the light guide, the light from this zone Z1 would then be, on average, not deviated. In the context of this variant, the propagation path then extends, from the input face of the light guide, in a direction substantially parallel to that in which zone Z1 is located, seen from the entrance face. 51.
    Optionally, provision can be made for the entrance face 51 to be convex, in order to increase the efficiency and the collection selectivity of the light guide 50. The input face 51 can in particular be convex, in order to fulfill the function optics of a converging lens.
    The output face 53 is approximately flat and orthogonal to the propagation path c.
    The light sensor 30 is here arranged close to the upper main wall 11 of the housing (on the inside of the housing), as is the entrance face 51 of the light guide, so that the propagation path c mentioned above is approximately parallel to this upper main wall 11 of the housing.
    The sensitive surface of the sensor 30 extends here approximately perpendicularly to this upper main wall 11.
    The light guide 50 also has, here, an upper face 52 connecting its inlet face 51 and its outlet face 53, and extending approximately parallel to the propagation path c. This upper face 52 fulfills a function of guiding, by total internal reflection, the light radiation collected by the light guide 50. For this purpose, the upper face 52 is polished.
    The input faces 52 and output 53, and here that the other faces of the light guide 50 are also polished.
    The light guide 50 is for example made by injection into a mold of a transparent plastic material such as transparent polycarbonate or polymethyl methacrylate (or PMMA) transparent.
    The exit face 53 of the light guide 50 is here disjoint from the light sensor 30, a thin gap being provided between the sensor 30 and the exit face 53. This arrangement advantageously prevents the transmission of vibrations or mechanical stresses between the guide light 50 and the sensor 30.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    1. Display (1) comprising - a housing (10), - an image generating unit (20), - a light sensor (30) disposed inside (INT) of said housing (10), adapted for delivering a signal representative of a light intensity that it receives, the display (1) being adapted so that the brightness of an image generated by the image generation unit (20) is controlled according to said signal, characterized in that the display (1) further comprises a light guide (50) located inside (INT) of the housing (10) of the display (1), having an input face ( 51) and shaped to collect at its input face (51) light radiation from outside the housing (10) of the display, and to guide said light radiation to said sensor (30).
    [2" id="c-fr-0002]
    2. Display (1) according to claim 1, wherein said housing (10) has an opening (16) traversed by said light radiation, the input face (51) of the light guide (50) being located at the level of this opening (16).
    [3" id="c-fr-0003]
    3. Display (1) according to one of claims 1 and 2, comprising a projection optical assembly (60) adapted to project the image generated by the image generation unit (20), in the direction of a semi-transparent plate (70) for forming, with the semi-transparent plate (70), a virtual image (IMV) in the field of view of a user, and in which the light guide (50) is distinct from the semi-transparent blade (70).
    [4" id="c-fr-0004]
    4. Display (1) according to claim 3, wherein the light guide (50) is shaped so that the light radiation that it is adapted to collect comes from a zone (Z1) located approximately in the direction in which is formed said virtual image (IMV).
    [5" id="c-fr-0005]
    5. Display (1) according to one of claims 3 and 4, wherein said zone (Z1) surrounds said virtual image (IMV).
    [6" id="c-fr-0006]
    6. Display (1) according to one of claims 4 and 5, wherein the input face (51) of the light guide (50) has an orientation adapted to deflect by refraction light radiation from said zone (Z1 ) so as to couple this light radiation into the light guide (50).
    [7" id="c-fr-0007]
    7. Display (1) according to one of claims 4 to 6, wherein the input face (51) of the light guide (50) is curved to selectively collect the light radiation from said zone (Z1).
    [8" id="c-fr-0008]
    8. Display (1) according to one of claims 3 to 7, wherein the entrance face (51) of the light guide (50) is located, relative to the semi-transparent plate (70), a side opposite to said virtual image (IMV).
    [9" id="c-fr-0009]
    9. Display (1) according to one of claims 1 to 8, wherein the housing (10) has an outer face (12) and has a recess (100) at the outer face (12), the face d the entrance (51) of the light guide (50) being located at this recess (100).
    [10" id="c-fr-0010]
    10. Display (1) according to one of claims 1 to 9 wherein, the housing (10) having an outer face (12), the housing (10) comprises a wall (15) extending from this face. external (12) towards the inside (INT) of the housing (10) and overhanging with respect to said outer face (12), the entry face (51) of the light guide (50) being located at the said wall (15).
    [11" id="c-fr-0011]
    11. Display (1) according to one of claims 1 to 10 wherein, the housing (10) having an outer face (12), the housing (10) comprises a conduit (19) extending from said outer face ( 12) towards the inside (INT) of the housing (10) for the passage to the outside of the housing (10) of light radiation emitted by the image generating unit (20), the input face (51) of the light guide (50) being located at this conduit (19).
    [12" id="c-fr-0012]
    12. Display (1) according to one of claims 9 to 11, taken in accordance with one of claims 3 to 8, wherein said outer face (12) is located relative to the inside (INT). housing (10), on the same side of the housing (10) as the semi-transparent blade (70) in the use position.
    [13" id="c-fr-0013]
    13. Display (1) according to one of claims 1 to 12, wherein the light guide (50) is disjoint said sensor (30).
    [14" id="c-fr-0014]
    14. Display (1) according to one of claims 1 to 13, adapted so that the brightness of the generated image is even larger than the light intensity received by said sensor (30) is large.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH06144081A|1992-10-30|1994-05-24|Kansei Corp|Head-up display unit equipped with automatic dimming function for vehicle|
    JPH0647027U|1992-12-04|1994-06-28|株式会社カンセイ|Head-up display device with automatic light control function for vehicle|
    JP2004314860A|2003-04-18|2004-11-11|Nippon Seiki Co Ltd|Indicating device|
    JP2011223238A|2010-04-08|2011-11-04|Hitachi Consumer Electronics Co Ltd|Image display device|
    EP2849175A1|2012-05-11|2015-03-18|Nippon Seiki Co., Ltd.|Display device and control method for same|WO2021078905A1|2019-10-23|2021-04-29|Valeo Comfort And Driving Assistance|Motor vehicle head-up display and motor vehicle comprising such a display|JP5683690B2|2010-05-26|2015-03-11|ジョンソン・コントロールズ・ゲー・エム・ベー・ハー|Displays, especially vehicle head-up displays|CN107945661B|2017-11-22|2019-11-15|维沃移动通信有限公司|A kind of terminal device|
    FR3084476A1|2018-07-30|2020-01-31|Valeo Comfort And Driving Assistance|LIGHT SENSOR DISPLAY|
    DE102020116070A1|2020-06-18|2021-12-23|Valeo Schalter Und Sensoren Gmbh|Head-up display with light sensor outside an optical path, as well as procedures|
    法律状态:
    2017-04-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-10-27| PLSC| Search report ready|Effective date: 20171027 |
    2018-04-26| PLFP| Fee payment|Year of fee payment: 3 |
    2019-04-29| PLFP| Fee payment|Year of fee payment: 4 |
    2020-04-30| PLFP| Fee payment|Year of fee payment: 5 |
    2021-04-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1653673A|FR3050542B1|2016-04-26|2016-04-26|DISPLAY COMPRISING A LIGHT SENSOR|
    FR1653673|2016-04-26|FR1653673A| FR3050542B1|2016-04-26|2016-04-26|DISPLAY COMPRISING A LIGHT SENSOR|
    EP17719583.1A| EP3449305A1|2016-04-26|2017-04-25|Display comprising a light sensor|
    US16/096,867| US20200413516A1|2016-04-26|2017-04-25|Display comprising a light sensor|
    CN201780034610.5A| CN109791285A|2016-04-26|2017-04-25|Display including optical sensor|
    PCT/EP2017/059837| WO2017186745A1|2016-04-26|2017-04-25|Display comprising a light sensor|
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