• 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 driving assistance system (1) comprising a protection device (2) for an optical sensor (11) for a motor vehicle comprising a protective housing (13) in which a housing (26) is formed. ) configured to house an optical sensor (11), said device (2) further comprising: a support (15) movably mounted on the protective housing (13) and carrying a membrane (19) fixed at its periphery to the support (15); ) and intended to be arranged facing the optical sensor (11), the membrane (19) comprising an optically transparent material and elastically deformable; and - at least one actuator (21) carried by the protective housing (13) and configured for moving the support (15) carrying the membrane (19). The support (15), under the effect of the movement of the support (15) by the actuator (21), is configured to deform the membrane (19) between a rest position in which the membrane (19) is in a first voltage state and an active position in which the diaphragm (19) is in a second voltage state.
    公开号:FR3054680A1
    申请号:FR1657326
    申请日:2016-07-28
    公开日:2018-02-02
    发明作者:Marcel Trebouet；Frederic Bretagnol
    申请人:Valeo Systemes dEssuyage SAS；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,054,680 (to be used only for reproduction orders) © National registration number: 16 57326
    COURBEVOIE © Int Cl 8 : G 02 B 27/00 (2017.01), B 08 B 7/02, B 60 R 1/00, 11/04
    A1 PATENT APPLICATION
    ©) Date of filing: 07.28.16. © Applicant (s): VALEO WIPING SYSTEMS (© Priority: Simplified joint stock company - FR. @ Inventor (s): TREBOUET MARCEL and BRETAGNOL FREDERIC. (43) Date of public availability of the request: 02.02.18 Bulletin 18/05. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO WIPING SYSTEMS related: Joint stock company. ©) Extension request (s): © Agent (s): VALEO WIPING SYSTEMS INDUSTRIAL PROPERTY SERVICE.
    VX) DEVICE FOR PROTECTING AN OPTICAL SENSOR AND DRIVING ASSISTANCE SYSTEM INCLUDING AN OPTICAL SENSOR.
    FR 3 054 680 - A1
    The invention relates to a driving assistance system (1) comprising a protection device (2) for an optical sensor (11) for a motor vehicle comprising a protection housing (13) in which a housing (26) is provided. ) configured to house an optical sensor (11), said device (2) further comprising:
    - A support (15) movably mounted on the protective housing (13) and carrying a membrane (19) fixed by its periphery to the support (15) and intended to be arranged opposite the optical sensor (11), the membrane (19 ) comprising an optically transparent and resiliently deformable material; and
    - At least one actuator (21) carried by the protective housing (13) and configured for setting in motion the support (15) carrying the membrane (19).
    The support (15), under the effect of the movement of the support (15) by the actuator (21), is configured to deform the membrane (19) between a rest position in which the membrane (19) is in a first tension state and an active position in which the membrane (19) is in a second tension state.

    OPTICAL SENSOR PROTECTION DEVICE AND DRIVING ASSISTANCE SYSTEM INCLUDING AN OPTICAL SENSOR
    The present invention relates to the field of driving assistance and in particular to driving assistance systems, installed on certain vehicles, the assistance system possibly comprising an optical sensor such as for example a camera comprising a lens. More particularly, the invention relates to a device for protecting such a driving assistance system comprising means for cleaning the optics thereof.
    Currently, front, rear and even side vision cameras are fitted to a large number of motor vehicles. They are notably part of driving assistance systems, such as parking assistance systems, or even line crossing detection systems.
    There are cameras installed inside the passenger compartment of a vehicle for parking assistance. These cameras are well protected from climatic hazards as well as dirt linked to organic or mineral pollutants. However, the angle of view for such cameras, installed inside the passenger compartment, is not optimal, in particular for a parking aid because they do not make it possible to see the obstacles being close to the rear of the vehicle for example.
    It is therefore preferable to install these driving assistance systems, and in particular their cameras, outside the vehicles in different places according to the desired use. In such a case, the driving assistance system, and in particular the camera of such a system, is therefore highly exposed to the vagaries of the weather as well as to projections of dirt which can reduce its effectiveness, or even render it inoperative.
    To counter the deposit of dirt on the driving assistance system, it is known to arrange a device for cleaning the optics of the camera, generally a nozzle of cleaning liquid near the latter in order to remove pollutants that have settled over time.
    On the other hand, the optics of the camera, generally formed by a lens, is a relatively fragile device. It is therefore necessary to protect it from projections which could damage it. It is therefore common to find such cameras housed inside protective casings comprising a protective window arranged opposite the lens. However, cleaning the lens or the window of the housing protecting it is an important criterion for ensuring the optimal functioning of the camera.
    Document US2014 / 0036084 discloses a camera assembly inside a protective housing in which there is a piezoelectric vibrator which allows the vaporization of drops of water present on the camera lens and thus their cleaning when the vehicle is in operation.
    However, such a system does not make it possible to clean organic or mineral dirt, or even traces of water loaded with various pollutants which would have deposited on the lens and would have had time to dry due, for example, to prolonged parking of the vehicle.
    Document US2012 / 0243093 also discloses a housing comprising a camera and equipped with a piezoelectric device and with a cover protecting the camera lens. The piezoelectric device makes it possible to vibrate the assembly made up by the housing and the camera, and thus to prevent organic or mineral dirt from adhering to a cover protecting the lens.
    However, such a vibration of the assembly greatly increases the risk of breakage and / or cracking of the material making up the lens or the cover covering the latter so as to close a housing in which the optical sensor is disposed. To form the lens, it is therefore necessary to use glasses or plastics which are very resistant to vibrations and shocks which are generally expensive. On the other hand, such vibrations can damage the internal system of the camera, in particular its electronic components.
    In order to be able to clean the lenses of cameras comprising organic or mineral dirt, without risking damage to the lens or the optical sensor, document FR2841488 discloses a housing containing a camera with housing cleaning means composed of a nozzle. and means for vibrating the window facing the camera. This housing also includes means for defrosting and demisting. In addition, to limit traces of water, this window is made of a hydrophobic material which has undergone a catalytic treatment in order to reduce the adhesion of water and organic pollutants on it.
    However, this device can in certain cases be too bulky, in particular when it is intended to be installed at the level of the registration plate of the vehicle, at the level of the front or rear bumpers, or even at the level of the mirrors. Furthermore, this device only allows the cleaning liquid to trickle onto the glass, its effectiveness for stubborn and encrusted soiling may be limited despite the vibration of the glass and the catalytic treatment which it has undergone. On the other hand, the presence of a nozzle requires fitting pipes for supplying the cleaning liquid to the level of the housing. These pipes must generally be fitted by the manufacturer and require an initial design within the more complex vehicle.
    The present invention proposes to remedy at least partially the drawbacks of the prior art mentioned above by presenting a device for protecting an optical sensor which ensures good protection thereof and the cleaning of which optical is fast, effective, and without necessarily requiring a cleaning liquid, as well for traces of water as for organic or mineral stains which would have had time to strongly adhere to the optics of the optical sensor included in the system driving assistance.
    To this end, the subject of the invention is a device for protecting an optical sensor for a motor vehicle comprising a protective box in which is housed a housing configured to house an optical sensor, characterized in that said device further comprises:
    - A support mounted movable on the protective housing and carrying a membrane fixed by its periphery to the support and intended to be arranged opposite the optical sensor, the membrane comprising an optically transparent material and elastically deformable; and
    - at least one actuator carried by the protective housing and configured for setting in motion the support carrying the membrane;
    and in that the support, under the effect of the setting in motion of the support by the actuator, is configured to deform the membrane between a rest position in which the membrane is in a first state of tension and at least one position active in which the membrane is in a second state of tension. In the second state of tension the membrane being more tense than in the first state of tension.
    Thus, if the dirt is deposited on the membrane located in front of the optical sensor housed in the protective housing, the movable support carrying the membrane will be able to allow the elastic deformation of the latter during the setting in motion of said support.
    When the membrane is in its second state of tension, the dirt will be able to fall from the membrane because the contact surface of the dirt on the membrane is reduced. The membrane has greater elasticity than the dirt adhering to the membrane. As a result, the bond of adhesion between the dirt and the membrane will break when the membrane is in its second state of tension and thus allow the fall of the dirt.
    The optical sensor protection device according to the invention can also include one or more of the following characteristics taken alone or in combination:
    The optically transparent and resiliently deformable material of the membrane is an elastomer.
    The protective housing has a substantially central opening allowing the passage of an optic from the optical sensor and at least one first guide member configured to cooperate with a second complementary guide member carried by the support.
    The support comprises a plate integral with at least a second guide member and comprising an opening in which the membrane is placed, the plate being intended to be oriented substantially perpendicular to the optical axis of the optical sensor.
    The support comprises a membrane fixing ring surrounding the opening in which the membrane is placed.
    The complementary guide members are oriented so as to allow a translational movement of the support along an axis substantially perpendicular to the plate of the support.
    The opening of the plate is configured to accommodate the optic so that it projects from the opening and is in contact with the elastic membrane.
    The complementary guide members are formed by a rod / barrel system.
    The support actuator comprises at least one of the elements chosen from the following list: a piezoelectric transducer, an electromagnet, a mechanical system comprising a toothed wheel and a rack.
    Alternatively, the actuator is arranged inside the protective housing.
    According to another variant, the actuator is arranged outside the protective housing.
    The actuator is configured to set the support in motion at a frequency included in the field of ultrasound.
    The formulation of the elastomer making up the membrane has properties of resistance to ultraviolet and / or non-stick radiation.
    The invention also relates to a driving assistance system comprising an optical sensor and comprising a protection device as described above.
    Thus, the driver assistance system can be directly installed on any type of vehicle. The optical sensor comprising at least one camera which will thus be protected from external aggressions, thus preventing the field of vision of the camera from being altered by traces of water or dirt linked to organic or mineral pollutants. The optical sensor will therefore have an optimized operation.
    The driver assistance system may further include one or more of the following characteristics taken alone or in combination:
    The actuator is configured to set the support in motion along the optical axis of the optical sensor.
    The optics of the optical sensor protrudes through an opening in the support plate and is in contact with the elastic membrane disposed on the plate.
    Other advantages and characteristics will appear on reading the description of the invention, as well as the appended drawings in which:
    FIG. 1 is a schematic view of the driving assistance system according to the invention,
    FIG. 2 is an exploded view of the driving assistance system of FIG. 1,
    FIG. 3 is a schematic view of the driving assistance system when the membrane is in a rest position,
    FIG. 4 is a view in longitudinal section of the driving assistance system when the membrane is in the rest position,
    FIG. 5 is a schematic view of the driving assistance system when the membrane is in an active position,
    - Figure 6 is a longitudinal sectional view of the driving assistance system when the membrane is in the active position.
    In these figures, identical elements have the same numerical references.
    The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the characteristics apply only to a single embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.
    In the following description, reference is made to first guide members and to second guide members. It is a simple indexing to differentiate and name similar but not identical elements. This indexing does not imply a priority of one element over another and one can easily interchange such names without departing from the scope of this description. This indexing also does not imply an order in time for example to assess the setting in motion of the support.
    With reference to FIGS. 1 and 2, the invention relates to a driving assistance system 1 comprising an optical sensor 11 for a motor vehicle and a protection device 2 for the optical sensor 11.
    The protective device 2 comprises on the one hand a protective box 13 in which is formed a housing 26 configured to house the optical sensor 11, such as a camera, and on the other hand a membrane support 15 mounted movably on the protective housing 13.
    The protective housing 13 has a substantially central opening 25 configured to allow the passage of an optic 4 of the optical sensor 11. In addition, the protective housing 13 carries at least one first guide member 22 configured to cooperate with a second member complementary guide 23 carried by the support 15.
    According to the embodiment described here, the protective housing 13 comprises two guide members 22 of barrel type and the second guide members 23 carried by the support 15 are of rod type.
    The protective housing 13 also comprises at least one actuator 21 configured for setting the support 15 in motion along the optical axis 50 of the optical sensor 11. According to the embodiment described here, the protective housing comprises two actuators 21 located on either side of the substantially central opening 25 of the protective housing 13. These actuators 21 are located inside the barrel-type guide members 22 for coming into contact with the second guide members 23.
    Furthermore, according to this nonlimiting exemplary embodiment, the actuators 21 are linear piezoelectric transducers. Thus, the actuator 21 has a small footprint and is protected from external aggressions which can be linked to climatic vagaries or to organic or mineral pollutants, which could prevent its proper functioning.
    The support 15 carries the membrane 19 which is fixed by its periphery thereon. According to the embodiment described here, the support 15 comprises a plate 16 integral with the second guide members 23. On this plate 16 is fixed a ring 17 for fixing the membrane 19 and in which is placed an elastically deformable membrane 19 intended to be arranged opposite the optical sensor 11.
    The plate 16 is intended to be oriented substantially perpendicular to the optical axis 50 of the optical sensor 11 and has an opening 18 configured to accommodate the optics 4 of the optical sensor 11 so that the latter projects from the opening and is in contact with the membrane 19. The substantially central opening 25 of the protective housing 13 and the opening 18 of the plate 16 of the support 15 are therefore centered relative to the optical axis 50 of the optical sensor 11 and concentric.
    The support 15, under the effect of its movement by the actuator 21, is configured to move between a rest position in which the membrane 19 is in a first state of tension (shown in Figures 3 and 4) , and an active position in which the membrane 19 is in a second state of tension (shown in FIGS. 5 and 6), in the second state of tension, the membrane 19 is more tensioned than in the first state of tension.
    The membrane 19 is resiliently deformable and comprises an optically transparent material. The use of an elastomer in the formulation of the membrane 19 allows the latter to have the desired elastic deformation. According to the embodiment described here, the membrane 19 is an elastomer having properties of resistance to ultraviolet radiation and non-adherent. Due to its possible installation on the exterior of a motor vehicle, it is advantageous that the properties of the membrane 19, in particular of elasticity and transparency, are not altered by ultraviolet radiation. It is better to avoid, for example, that it tarnishes or becomes cloudy, or that it weakens because of exposure to the sun, in particular because of UV radiation, which it will undergo intrinsically during its use.
    According to this particular embodiment, silicon is introduced into the formulation of the elastomer. This gives the elastomer good resistance to ultraviolet radiation. The use of silicon in the formulation of the elastomer making up the membrane 19 also makes it possible to give the latter a hydrophobic character. The drops of water can therefore only with difficulty adhere to the membrane 19 and the traces which they would be likely to leave due to their runoff will be almost invisible. On the other hand, to limit the possibilities of adhesion of traces of water or pollutants, the membrane 19, preferably, has non-stick properties. In addition, according to this embodiment, the membrane 19 is fixed in the ring 17 by its periphery.
    The complementary guide members 22, and 23 are oriented so as to allow a translational movement of the support 15 along an axis substantially perpendicular to the plane defined by the plate 16 and more particularly along the optical axis 50 of the optical sensor 11.
    Referring to Figures 3 and 4, the membrane 19 is in a rest position, that is to say, it is in a first state of tension.
    The arrows 32 directed towards the center illustrate the movement of the guide members 23 under the effect of the actuator 21 when the support 15 moves so that the membrane 19 reaches its rest position. “Movement of the guide members 23” is understood to mean the movement of the mobile support 15 relative to the protective housing 13.
    The arrows 34 show the direction of deformation of the membrane 19 in response to the setting in motion of the support 15. According to this representation, the direction of deformation of the membrane 19 is towards the interior thereof. This deformation of the membrane 19 takes place in response to the movement of the support 15. In this rest position, the membrane 19 is in its first state of tension. In this position, dirt 30, such as organic or mineral pollutants as well as traces of water, can be deposited on the membrane 19 and thus harm the good operability of the driving assistance system 1.
    According to FIG. 4, the actuator 21 is configured to set the support 15 in motion along the optical axis 50 of the optical sensor 11. This type of translation allows the membrane 19 to undergo similar tensile forces over the assembly of its surface when it goes into active position.
    The movement of the support 15 is possible thanks to clearances 40, 42, and 43 present between the support 15 and the protective housing 13. These clearances 40, 42, and 43 each define a spacing between the support 15 and the protective housing 13 which is maximum (Figure 4) when the membrane 19 is in the rest position and minimum (Figure 6) when the membrane 19 is in its active position.
    According to the representation in FIG. 4, the clearance 40 corresponds to the space present between the protective housing 13 and the support 15 at the level of the guide members 22. The clearance 42 corresponds to the space between the ring 17 and the rim of the objective 6 carrying the lens 4 of the camera 11. The clearance 43 as for it corresponds to the space between the support 15 and the surface of the protective housing 13 having the substantially central opening 25 intended to receive the lens 4 of the camera 11. According to this embodiment, it is noted that the lens 4 projects through the opening 18 of the support plate 15. According to this representation, it can be seen that the lens 4 is partially in contact with the membrane 19 disposed on the plate 16 when the membrane 19 is in the rest position. It is also noted, according to this representation, that the elastic membrane 19 is arranged coaxially with the optical axis 50 of the optical sensor 11.
    The contact between the membrane 19 and the lens 4 of the camera 11 will make it possible to tension the membrane 19 when the latter passes from its rest position, that is to say its first state of tension, to its active position, that is to say its second state of tension, under the effect of the setting in motion of the support 15. In order for this change of position to be able to take place, it is necessary for the membrane 19 to be opposite the lens 4 of the optical sensor 11.
    Figures 5 and 6 show the membrane 19 in its active position, that is to say that it is in the second tension state. When the membrane 19 is in this second state of tension, it is more tense than when it is in its first state of tension.
    The arrows 33 directed outwards from the center illustrate the movement of the guide members 23 under the effect of the actuator 21 when the support 15 moves so that the membrane 19 reaches its active position. These arrows 33 are opposite to the arrows 32 shown in FIGS. 3 and 4.
    The arrows 35 illustrate the direction of deformation of the membrane 19. According to this representation, the deformation of the membrane 19 corresponds to an extension of the latter when the membrane 19 passes into its second state of tension. This deformation therefore takes place towards the outside of the membrane 19. These arrows 35 are opposite to the arrows 34 shown in FIGS. 3 and 4. This tension will allow the dirt 30 to fall from the surface of the membrane 19.
    According to Figure 6, the clearance 41 between the support 15 and the protective housing 13 corresponds to the minimum possible space between these two elements. This clearance 41 corresponds to the clearance 40 shown in FIG. 4 when the membrane 19 is in its rest position. Note that the clearances 42 and 43 initially present in FIG. 4 between the support 15 and the base of the objective 6 of the optical sensor 11 have disappeared due to the setting in motion of the support 15 relative to the protective housing 13 under the effect of the actuator 21.
    In this active position, the elastic membrane 19 is, according to this embodiment, completely in contact with the lens 4 of the optical sensor 11 which projects through the opening of the plate 16 of the support 15 which carries the ring 17. The contact between the membrane 19 and the lens 4 will act as a fulcrum. Furthermore, as the membrane 19 is fixedly mounted in the ring 17 carried by the support 15, the membrane 19 will be able to stretch to reach its active position when the support 15 approaches the protective housing 13 or retract to reach its resting position when the support 15 moves away from the protective housing 13. Thus, the membrane 19 will be able to tighten and move into the active position when the support 15 approaches the protective housing 13 under the effect of the actuator 21.
    During the operation of the protection device 2 according to the invention, the support 15 will make several round trips at a predefined frequency. According to this embodiment, the frequency of movement of the support 15 relative to the protective housing 13 is included in the field of ultrasound.
    When the membrane 19 is in the active position, the contact surface between the membrane 19 and the dirt 30 is reduced. Thus, connections between the soiling 30 and the membrane 19 will break thus allowing the fall thereof. On the other hand, the membrane 19 has greater elasticity than the dirt 30 which adheres thereto. Therefore, by stretching the membrane 19, there is also a tendency to stretch the soiling 30, which is not possible due to their lower elasticity. These two combined actions linked to the tension of the membrane 19 will allow the soil to fall off. Furthermore, when the membrane 19 is in its second state of tension, this will allow the breaking of connections inside the soiling 30 and thus facilitate their disintegration.
    According to this particular embodiment, by using piezoelectric transducers as actuator 21, a deformation of the membrane 19 of between 0.5% and 5% makes it possible to obtain an effective fall in dirt 30.
    According to this particular embodiment, the setting in motion of the support 15 by the actuators 21 is automatically controlled by the vehicle after a predefined duration of use thereof.
    Alternatively, the actuators 21 of the support 15 can be replaced by electromagnets. In this case, the second guide members 23 of rod type carried by the support 15 are made of a ferromagnetic material.
    According to another embodiment, the actuators 21 can be mechanical systems comprising a toothed wheel and a rack for example.
    The use of a piezoelectric transducer as an actuator 21 makes it possible to have a fairly small and very rapid movement of the support 15 carrying the membrane 19 relative to the protective housing 13. The use of an electromagnet or a mechanical system as an actuator 21 will require a longer stroke of the support 15 carrying the membrane 19 relative to the protective housing 13. The use of these second systems will allow a greater elongation of the membrane 19. For such actuators 21, an elongation of the membrane 19 of between 5% and 15% makes it possible to obtain an effective fall in dirt 30.
    According to another embodiment, the actuator 21 can be placed outside the protective housing 13. In this case, the actuator 21 can be located at the rear of the protective housing 13, at the front of this one, or above or below it.
    According to another embodiment, the first and second complementary guide members 22, 23 carried by the protective housing 13 and by the movable support 15 can be systems with complementary shape structure.
    According to an alternative embodiment, the guide members 23 carried by the support 15 can be of the barrel type. In this case, the complementary guide members 22 carried by the support 15 will be of the rod type. In this particular embodiment, the actuator 21 will be carried by the support 15.
    According to another embodiment, it is possible to modify the activation times for setting the support 15 in motion. It is for example possible to set the support 15 in motion when the vehicle is started.
    Alternatively, it is possible to control the setting in motion of the support 15 when a detector measures a fouling state which may affect the proper functioning of the optical sensor 11.
    According to another embodiment, the setting in motion of the support 15 can be controlled by the user. This is particularly advantageous when the protection device 2 is used to protect optical sensors 11 used in parking assistance systems. The user can therefore activate the actuator 21, and thus allow the setting in motion of the support 15, when he finds that the membrane 19 is dirty, for example when using the driving assistance system 1 in as a parking aid. Furthermore, in this configuration, the presence of the detector is not necessary.
    According to another embodiment, the membrane 19 can be directly fixed by its periphery to the plate 16 of the support 15 without requiring the use of the ring 17.
    Optionally, it is possible to place a nozzle of cleaning product near the membrane 19 so as to spray cleaning product thereon. The nozzle may or may not be integrated into the protective housing
    13.
    These exemplary embodiments are provided by way of illustration and not limitation. Indeed, it is entirely possible for a person skilled in the art, without departing from the scope of the invention, to replace the actuators 21 here described by any other actuator making it possible to set the support 15 in movement in a substantially translational translation. perpendicular to the plate 16 of said support 15. On the other hand, those skilled in the art can use any other compound having UV resistance and / or having hydrophobic properties and whose physical and mechanical properties are compatible with use described above in the formulation of the elastomer composing the membrane 19 without departing from the scope of the invention. Finally, it can replace the guide members 22 and 23 described here by any other type of complementary guide members without departing from the scope of the invention.
    Thus, rapid, efficient cleaning, and without necessarily requiring a cleaning product, of the optics 4 of an optical sensor 11, which can for example be a camera, intended to equip a motor vehicle is possible thanks to the object of the present invention which comprises an optically transparent and elastically deformable membrane 19 mounted on a mobile support 15. The support 15 cooperates with a protective housing 13 which receives the camera. The setting in motion of the support 15 is carried out using first and second complementary guide members 22 and 23 carried respectively by the protective housing 13 and by the support 15. The support 15 is set in motion using of one or more actuators 21 for example carried by the protective housing 13. The setting in motion of the support 15 allows the membrane 19 to pass from its rest position to its active position in order to allow the fall of dirt 30.
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    1. Protection device (2) of an optical sensor (11) for a motor vehicle comprising a protective housing (13) in which is housed a housing (26) configured to accommodate an optical sensor (11) characterized in that said device (2) further comprises:
    a support (15) mounted movably on the protective housing (13) and carrying a membrane (19) fixed by its periphery to the support (15) and intended to be arranged opposite the optical sensor (11), the membrane (19) comprising an optically transparent and resiliently deformable material; and at least one actuator (21) carried by the protective housing (13) and configured for setting in motion the support (15) carrying the membrane (19);
    and in that the support (15), under the effect of the movement of the support (15) by the actuator (21), is configured to deform the membrane (19) between a rest position in which the membrane (19) is in a first tension state and an active position in which the membrane (19) is in a second tension state.
    [2" id="c-fr-0002]
    2. Protective device (2) of an optical sensor (11) according to the preceding claim characterized in that the optically transparent and elastically deformable material of the membrane is an elastomer.
    [3" id="c-fr-0003]
    3. Protection device (2) of an optical sensor (11) according to the preceding claims, characterized in that the protective housing (13) has:
    a substantially central opening (25) configured to allow the passage of an optic (4) of the optical sensor (11); and at least a first guide member (22) configured to cooperate with a second complementary guide member (23) carried by the support (15).
    [4" id="c-fr-0004]
    4. Protection device (2) of an optical sensor (11) according to the preceding claims, characterized in that the support (15) comprises a plate (16) integral with at least a second guide member (23) and comprising an opening (18) in which the membrane (19) is placed, the plate (16) being intended to be oriented substantially perpendicular to the optical axis (50) of the optical sensor (11).
    [5" id="c-fr-0005]
    5. Protection device (2) of an optical sensor (11) according to claim 4 characterized in that the support (15) comprises a ring (17) for fixing the membrane (19) surrounding the opening (18) and in which the membrane (19) is placed.
    [6" id="c-fr-0006]
    6. Protection device (2) of an optical sensor (11) according to claims
    3 and 4 characterized in that the complementary guide members (22, 23) are oriented so as to allow a translational movement of the support (15) along an axis substantially perpendicular to the plate (16) of the support (15).
    [7" id="c-fr-0007]
    7. Protection device (2) of an optical sensor (11) according to the claims
    4 to 6 characterized in that the opening (18) of the plate (16) is configured to receive the optics (4) so that it projects from the opening and is in contact with the elastic membrane (19 ).
    [8" id="c-fr-0008]
    8. Protection device (2) of an optical sensor (11) according to any one of claims 3 to 7 characterized in that the complementary guide members (22, 23) are formed by a rod / barrel system.
    [9" id="c-fr-0009]
    9. Protection device (2) of an optical sensor (11) according to any one of claims 1 to 8 characterized in that the at least one actuator (21) of the support (15) comprises at least one of the elements chosen from the following list: a piezoelectric transducer, an electromagnet, a mechanical system comprising a toothed wheel and a rack.
    [10" id="c-fr-0010]
    10. Protective device (2) of an optical sensor (11) according to any one of claims 1 to 9 characterized in that the actuator (21) is disposed inside the protective housing (13).
    [11" id="c-fr-0011]
    11. Protection device (2) of an optical sensor (11) according to any one of claims 1 to 9 characterized in that the actuator (21) is arranged outside the protective housing (13).
    [12" id="c-fr-0012]
    12. Protection device (2) of an optical sensor (11) according to any one of claims 1 to 11 characterized in that the actuator (21) is configured for setting in motion of the support (15) at a frequency included in the field of ultrasound.
    [13" id="c-fr-0013]
    13. Protection device (2) of an optical sensor (11) according to any one of claims 1 to 12 characterized in that the formulation of the elastomer making up the membrane (19) has properties of resistance to ultra radiation - violets and / or non-stick.
    [14" id="c-fr-0014]
    14. Driving assistance system (1) comprising an optical sensor (11), characterized in that it comprises a protection device (2) according to any one of the preceding claims.
    [15" id="c-fr-0015]
    15. Driving assistance system (1) according to claim 14 characterized in that the actuator (21) is configured to set in motion the support (15) along the optical axis (50) of the optical sensor (11 ).
    [16" id="c-fr-0016]
    16. Driving assistance system (1) according to claims 14 and 15 comprising the protection device (2) according to claim 4 characterized in that the optics (4) of the optical sensor (11) protrudes through an opening (18) of the plate (16) of the support (15) and is in contact with the elastic membrane (19) disposed on the plate (16).
    1/3
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    EP3404481B1|2021-07-21|Device for protecting an optical sensor and associated driving-assistance system
    FR3047458A1|2017-08-11|DEVICE FOR CLEANING AN OPTICAL DETECTION SYSTEM OF A MOTOR VEHICLE
    EP3434538B1|2020-12-02|Protection device for an optical sensor and driving-assistance system with such a protection device
    EP3350032A1|2018-07-25|Optical detection system for motor vehicle and method for cleaning the lens of the optical detection system
    WO2016116568A1|2016-07-28|Rear view system and method for operating the system
    FR3052416B1|2019-07-05|OPTICAL SENSOR PROTECTION DEVICE AND OPTICAL SENSING SYSTEM FOR AUTOMOTIVE VEHICLE
    EP3404480A1|2018-11-21|Device for protecting an optical sensor, associated driving-assistance system and assembly method
    FR3048659A1|2017-09-15|OPTICAL DETECTION SYSTEM FOR MOTOR VEHICLE
    FR3054022A1|2018-01-19|LUMINOUS MODULE FOR MOTOR VEHICLE
    FR3066622B1|2019-07-12|OPTICAL SENSOR PROTECTION DEVICE AND ASSOCIATED DRIVING ASSISTANCE SYSTEM
    EP3436318A1|2019-02-06|Viewing device for a motor vehicle
    FR3095628A1|2020-11-06|Cleaning module for a protective device for an optical element, driving assistance system, and associated cleaning process
    FR3053011B1|2019-08-02|VEHICLE MIRROR ASSEMBLY COMPRISING A DEVICE FOR FASTENING A CAMERA
    FR3056522A1|2018-03-30|CLEANING DEVICE FOR PROJECTING AT LEAST ONE FLUID TO A SURFACE FOR CLEANING A DETECTION SYSTEM OF A MOTOR VEHICLE
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    FR3056524A1|2018-03-30|DETECTION SYSTEM FOR MOTOR VEHICLE
    FR3082478A1|2019-12-20|MODULE FOR CLEANING AN OPTICAL ELEMENT OR A DEVICE FOR PROTECTING AN OPTICAL ELEMENT AND ASSOCIATED DRIVING ASSISTANCE SYSTEM
    FR3112325A1|2022-01-14|Camera device for a motor vehicle
    FR3048665A1|2017-09-15|DEVICE FOR CLEANING AN OPTICAL SENSOR AND OPTICAL SENSING SYSTEM FOR AN ASSOCIATED MOTOR VEHICLE
    FR3064561A1|2018-10-05|CLOSING DEVICE FOR VEHICLE INTERIOR MIRROR.
    EP0511887A1|1992-11-04|Display device for automotive vehicles
    同族专利:
    公开号 | 公开日
    WO2018019459A1|2018-02-01|
    EP3491448A1|2019-06-05|
    US20190171004A1|2019-06-06|
    CN109564346A|2019-04-02|
    FR3054680B1|2019-07-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2003338962A|2002-05-20|2003-11-28|Olympus Optical Co Ltd|Camera and imaging element unit used therefor|
    FR2841488A1|2002-06-27|2004-01-02|Valeo Systemes Dessuyage|Detector, especially of obstacles to parking behind motor vehicle, has transparent window with liquid spray and vibrator to clean it|
    DE102013202300A1|2012-02-15|2013-08-22|Dynalloy, Inc.|Camera system used for vehicles e.g. automobile, has shape memory alloy which is transitioned between two states to actuate wiper so that wiper is contacted and translated across lens to wipe debris from lens|
    US20140185140A1|2012-12-27|2014-07-03|Olympus Imaging Corp.|Vibration apparatus and imaging appliance|
    US8899761B2|2011-03-23|2014-12-02|Gentex Corporation|Lens cleaning apparatus|
    US9376066B2|2011-04-18|2016-06-28|Magna Electronics, Inc.|Vehicular camera with variable focus capability|
    FR3027008B1|2014-10-10|2017-12-08|Valeo Systemes Dessuyage|DEVICE FOR CLEANING A DRIVING CAMERA FOR DRIVING A MOTOR VEHICLE|US10668627B2|2017-09-26|2020-06-02|Toyota Research Institute, Inc.|Deformable sensors and methods for detecting pose and force against an object|
    DE102018203257B4|2018-03-05|2021-12-09|Volkswagen Aktiengesellschaft|Camera arrangement, method, device and computer-readable storage medium with instructions for controlling an assistance system|
    US20200230663A1|2019-01-18|2020-07-23|Tyco Safety Products Canada Ltd.|Sensor system having transparent window contaminant removal using vibration|
    CN112526803B|2019-08-28|2021-12-10|杭州海康威视数字技术股份有限公司|Video camera|
    US11102383B2|2020-01-07|2021-08-24|Chicony Electronics Co., Ltd.|Image capturing device with a clear status of operation|
    法律状态:
    2017-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2018-02-02| PLSC| Search report ready|Effective date: 20180202 |
    2018-07-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2021-04-09| ST| Notification of lapse|Effective date: 20210305 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657326A|FR3054680B1|2016-07-28|2016-07-28|OPTICAL SENSOR PROTECTION DEVICE AND DRIVING ASSISTANCE SYSTEM COMPRISING AN OPTICAL SENSOR|
    FR1657326|2016-07-28|FR1657326A| FR3054680B1|2016-07-28|2016-07-28|OPTICAL SENSOR PROTECTION DEVICE AND DRIVING ASSISTANCE SYSTEM COMPRISING AN OPTICAL SENSOR|
    US16/321,241| US20190171004A1|2016-07-28|2017-06-09|Device for protecting an optical sensor and driver assistance system comprising an optical sensor|
    PCT/EP2017/064159| WO2018019459A1|2016-07-28|2017-06-09|Device for protecting an optical sensor and driver assistance system comprising an optical sensor|
    CN201780046808.5A| CN109564346A|2016-07-28|2017-06-09|For protecting the device of optical sensor and including the driver assistance system of optical sensor|
    EP17727934.6A| EP3491448A1|2016-07-28|2017-06-09|Device for protecting an optical sensor and driver assistance system comprising an optical sensor|
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