GB2517948A - Adjustable light system with piezo actuator - Google Patents

Adjustable light system with piezo actuator Download PDF

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Publication number
GB2517948A
GB2517948A GB1315828.2A GB201315828A GB2517948A GB 2517948 A GB2517948 A GB 2517948A GB 201315828 A GB201315828 A GB 201315828A GB 2517948 A GB2517948 A GB 2517948A
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GB
United Kingdom
Prior art keywords
piezo actuator
light source
component
axis
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1315828.2A
Other versions
GB201315828D0 (en
Inventor
Austin Jesse Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Electric SA
Original Assignee
Johnson Electric SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Johnson Electric SA filed Critical Johnson Electric SA
Priority to GB1315828.2A priority Critical patent/GB2517948A/en
Publication of GB201315828D0 publication Critical patent/GB201315828D0/en
Priority to DE201420104106 priority patent/DE202014104106U1/en
Priority to CN201420508441.8U priority patent/CN204124033U/en
Publication of GB2517948A publication Critical patent/GB2517948A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/076—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electrical means including means to transmit the movements, e.g. shafts or joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources

Abstract

An adjustable light system includes a master control unit (MCU) and a plurality of adjustable light assemblies (10) controlled by the master control unit (MCU). Each adjustable light assembly (10) includes a light source (L1), a curved surface (S1) being a segment of a circle defining an axis (X1) at a center thereof, a piezo actuator (P1) configured to adjust a light cone (C) illuminated by the light source (L1), and a power supply (V1) configured to supply voltage to the light source (L1). The piezo actuator (P1) has a tip (T1) in sliding contacting with the curved surface (S1). The light source (L1) is fixed with respect to one of the piezo actuator (P1) and the curved surface (S1). The one of the piezo actuator (P1) and the component is pivotable relative to the other of the piezo actuator (P1) and the component in response to an electric signal sent from the master control unit (MCU) and applied to the piezo actuator (P1).

Description

TITLE
[0001] Adjustable Light System with Piezo Actuator
FIELD OF THE INVENTION
[0002] This invention generally relates to an automotive headlight adjustment (HLA) systems, and particularly to an HLA system using piezo actuators.
BACKGROUND OF THE INVENTION
[0003] HLA systems are common for modern Xenon iarnps for optimum illumination of the road while avoiding blinding out-coming traffic. For even higher levels of comfort and safety an adaptive front light system (AFS) attempts to dynamically adapt the light cone to the traffic situation and the surroundings, distinguishing between journeys in town, on country roads, on motorways, or depending on the weather. An continuous optimum illumination of the road, including improved view of corners, implies a highly reactive and flexible lighting system.
[0004] Accordingly, it would be desirable to provide a high flexible lighting system with flexible and highly dynamic response for headlights. such as LED modules.
SUMMARY OF THE INVENTION
[0005] Accordingly, in one aspect thereof, the present invention provides an adjustable light assembly which comprises a component having a curved surface being a segment of a cirde defining an axis at a center thereof, a piezo actuator, and a light source fixed to one of the piezo actuator and the component. The piezo actuator has a first end fixed to a point on the axis and a second end opposite to the first end, the second end having a tip in sliding contact with the curved surface of said component.
The one of the piezo actuator and the component is pivotable relative to the other of the piezo actuator and the component in response to an electric signal applied to the piezo actuator.
[0006] Preferably. the light source is fixed to the piezo actuator and the curved surface of the component is immobile relative to the axis.
[0007] Preferably. the piezo actuator comprises a first end and a second end opposite to the first end, the tip extending from one of the first and second ends of the piezo actuator.
[0008] Preferably. the piezo actuator further comprises a pair of main surfaces opposite to each other; a pair of side surfaces opposite to each other; two pairs of discrete electrodes disposed on one of the main surfaces; and a common electrode disposed on the other of the main surfaces. The main surfaces and side surfaces are extended between the first and second ends of the piezo actuator.
[0009] Preferably, the light source is fixed to one of the side sm-faces of the piezo actuator, the other of the first and second ends of the piezo actuator is fixed to a point on the axis, and the curved surface of the component is immobile relative to the axis.
[0010] Preferably. the light source is a gas filled light bulb.
[0011] Preferably. the light source is an LED.
[0012] Preferably, the adjustable light assembly further comprises another piezo actuator, one of the piezo actuators for adjusting light cone illuminated by the light source at one plane and the other for adjusting the light cone illuminated by hght source at another plane which is perpendicular to the one plane.
[0013] Alternatively, the light source is fixed to the curved surface which is pivotable about the rotation axis.
[0014] In another aspect thereof, the present invention provides an adjustable light system which cornpnses a master control unit and a plurality of adjustable light assemblies controlled by the master control unit. Each adjustable light assembly comprises a light source, a component having a curved surface being a segment of a circle defining an axis at a center thereof, a piezo actuator configured to adjust a light cone illuminated by the light source, and a power supply configured to supply voltage to the light source, The piezo actuator has a tip in sliding contacting with the curved surface. The light source is fixed with respect to one of the piezo actuator and the curved surface. The one of the piezo actuator and the component is pivotable about the axis relative to the other of the piezo actuator and the component in response to an electric signal sent from the master control unit and applied to the piezo actuator.
[0015] Preferably, the light source is fixed to the piezo actuator and the curved surface is immobile relative to the axis.
[0016] Preferably, the piezo actuator comprises a first end fixed to a point on the axis, and a second end opposite to the first end. The tip extends from the second end.
[0017] Preferably. the piezo actuator further comprises a pair of main surfaces opposite to each other, a pair of side surfaces opposite to each other, two pairs of discrete electrodes disposed on one of the main surface, and a common electrode disposed on the other of the main surface. The main surfaces and side surfaces are extended between the first and second ends of the piezo actuator and the light source is fixed to one of the side surfaces of the piezo actuator.
[0018] Alternatively, the light source is fixed to the curved surface which is pivotable about the rotation axis.
[0019] Preferably, the light source is an LED.
[0020] In another aspect thereof, the present invention provides a vehicle which comprises an adjustable light system. The adjustable light system compnses a master control unit and at east one adjustaNe fight assembly controlled by the master contr& unit. The adjustable light assembly comprises a light source; a component having a curved surface being a segment of a circle defining an axis at a center thereof; a piezo actuator configured to adjust a light cone illuminated by the light source, the piezo actuator having a tip in sfiding contact with the curved surface; and a power supply configured to supply voltage to the light source. The light source is fixed with respect to one of the piezo actuator and the component. The one of the piezo actuator and the component with respect to which the light source is fixed is pivotable about the axis relative to the other of the piezo actuator and the component in response to an dectric signal sent from the master control unit and applied to the piezo actuator.
[0021] Preferably, the adjustable light assembly further comprises another piezo actuator configured for driving the light source to rotate about another axis which is perpendicular to the axis.
[0022] Preferably, the adjustaNe light system comprises at least two adjustable light assemblies respectively controlled by the master control unit.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Various embodiments of the present invention are described, by way of example only. with reference to the drawings, in which identical or related structures.
elements, or parts may be labeled with the same reference numerals throughout the figures. Dimensions of components and features shown in the figures are generally chosen for convenience and clarity of presentation and are not necessarily to scale.
[0024] Figure 1 illustrates an adjustable light assembly according to a preferred embodiment of the present invention; [0025] Figure 2 illustrates a piezo actuator shown in Figure 1; [0026] Figure 3 illustrates a driver circuit of the piezo actuator shown in Figure 2; [0027] Figure 4 illustrates an adjustable light assembly according to a second embodiment of the present invention; [0028] Figure 5 is a plane view of the adjustable light assembly shown in Figure 4; [0029] Figure 6 illustrates a adjustable light system for vehicle in accordance with a third embodiment of the present invention; [0030] Figure 7 schematically illustrates a adjustable light system incorporating a plurality of actuator assemblies; and [0031] Figure 8 illustrates a vehicle with an adjustable light system in accordance with another embodiment of the present invention.
DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS
[0032] Referring to Fig. 1, an adjustable light assembly 10 according to a preferred embodiment of the present invention comprises a curved surface Si, a piezo actuator P1 having a tip Ti, and a light source Li.
[0033] In this embodiment, curved surface Si which is immobile, is a segment of a circle defining an axis XI at a center thereof. Curved surface SI may be a surface of any components.
[0034] Preferably, piezo actuator P1 is a hi-directional piezoelectric motor as illustrated in US 6,747,391, the disclosure of which is incorporated herein by reference.
Referring to Figs. 2 and 3, piezoelectric motor P1 comprises a piezoelectric crystal or ceramic element 12 that operates responsive to electric voltage there across to provide mechanical displacement. Element 12 preferably has a rectangular parallelepiped shape and comprises a first end 14, a second end 16 opposite to first end 14, a pair of main surfaces 18 extended between first and second ends 14, 16, and a pair of side surfaces 20 extended between the first and second ends 14, 16. Four discrete electrodes spaced from each other are plated or otherwise attached onto one of main surfaces iS.
Two diagonally located discrete electrodes are electrically connected by a wire to form a first pair of discrete electrodes 22. Another two diagonally located electrodes are electrically connected by another wire to form a second pair of discrete electrodes 24.
A conmion electrode 26 is attached to the other of main surfaces 18. Common electrode 26 is grounded. A first AC voltage is connected between electrodes 22 and 26 via a switch SWI and a second AC voltage is connected between electrodes 24 and 26 via a switch SW2.
[0035] Light source Li is fixed to one of side surfaces 20 of element 12. Tip TI extends from first end 14 of dement 12. In this embodiment, second end 16 is fixed to a point on axis Xl. Tip TI is in sliding contact with curved surface SI. AC Voltage is applied between electrodes 22 and 26 or between electrodes 24 and 26 in responsive to a control signal sent from a master control unit MCU (see Fig. 6). which resulis in piezo actuator P1 and light source Li being pivoted about axis Xl in one of two opposite directions to thereby adjust light cone C illuminated by light source Ll and illustrated by dotted line in Fig. 1.
[0036] Figs. 4 and 5 illustrate an adjustable light assembly 10 according to a second embodiment of the present invention. hi the second embodiment, light source LI is fixed with respect to curved surface Si which is pivotable about axis Xi. Piezo actuator P1 is immobile relative to axis Xl. Piezo actuator Pi may be fixed to any immobile components of the adjustable light assembly 10. When a control signal is applied to piezo actuator P1, tip Tl dnves curved surface Si which results in curved surface Si and light source Li being pivoted about axis Xl in one of two opposite directions to thereby adjust the light cone C illuminated by light source Li.
[0037] Fig. 6 illustrates an adjustable light system for vehicle in accordance with a third embodiment of the present invention. In this embodiment, adjustable light assembly 10 comprises two piezoelectric motors Pi one for adjusting light cone C illuminated by light source Li at one plane, e.g., pan, and the other for adjusting the light cone illuminated by light source LI at another plane, e.g., tilt, perpendicular to the first plane. Preferably, adjustable light assembly 10 further comprises a mounting plate 30 with a mounting hole 32. a first platform 40, and a second platform 50 fixed to first platform 40. First platform 40 is fixed to a shaft 42 which is pivotably mounted in mounting hole 32 of mounting plate 30. First piezoelectric motor P1 is mounted on mounting plate 30 and tip TI of first piezoelectric motor P1 is in sliding contact with the outer surface of shaft 42. When first piezoelectric motor P1 is electrified, tip TI of first piezoelectric motor P1 will drive shaft 42 together with first and second platforms 40, 50 to rotate about axis X2. Second platform 50 define an aperture 52.
Second piezoelectric motor P1 is mounted iii aperture 52 via a mounting member 54.
Tip Ti of first piezoelectric motor Pi slidably contacts with the inner surface of second platform 50 surrounding aperture 52. When second piezoelectric motor P1 is electrified, second piezoelectric motor P1 generates vibrations in its tip TI and applies force to the inner surface of second platform 50 to thereby generate torque to selectively rotate mounting member 54 clockwise or counter clockwise about axis Xi.
Light source LI is fixed to and rotatable with mounting member 54 about axis Xi.
Light source Ll and mounting member 54 mounted on second platform 50 are rotatable with first and second platforms 40, 50 about axis X2 which is perpendicular to axis Xl.
Thus, the light cone C illuminated by light source LI is adjustable in a 3-dimensional space.
[0038] Fig. 7 illustrates an adjustable light system for vehicle in accordance with a fourth embodiment of the present invention. Open circles indicate connections on electrical lines and full dots represent mechanical connection. The adjustable light system comprises a master control unit MCU, a plurality of actuator assemblies controlled by MCU. Each adjustable light assembly which may be any one of the actuator assemblies described before, comprises a light source Li, L2. a piezo actuator P1. P2 configured to adjust the light cone illuminated by light source LI, L2, and apower supply VI, V2 configured to supply voltage to light source LI, L2. Piezo actuators P1, P2 and power supplies Vl, V2 of actuator assemblies are respectively coupled to master control unit MCU which can control individual adjustable light assembly, such as dim or switch on and off individual light source L 1, L2, and control movement of piezo actuator P1, P2 to thereby adjust the light cone illuminated by light source Li, L2. Thus, it is possible to illuminate different, independent objects on demand. In this embodiment, each adjustable light assembly may be assemNed into a module, which enable cheaper replacement of individual module when it needs to be replaced and avoids expensive replacement of the whole adjustable light system. in this embodiment, curved surface S1 may be a surface of any components of a vehicle.
[0039] Alternatively, master control unit N'ICU can control some or all of the actuator assemblies at the same time.
[0040] In this embodiment, the adjustable light system comprises two actuator assemblies. Alternatively, the number of the actuator assembfles may be three, four, five and so on.
[0041] Preferably, the Ught source of the instant invention is a light emitting diode.
Alternatively, light source maybe any gas filled light bulbs, laser diodes and so on.
[0042] Fig. 8 illustrates a vehicle with an adjustable light system in accordance with another embodiment of the present invention. The area C' surrounded by dashed line indicate the light cone C' before adjusted. The area C surrounded by dashed line indicate the light cone C after adjusted.
[0043] Although the invention is described with reference to one or more preferred embodiments, it should be appreciated by those skilled in the art that various modifications are possible. Therefore, the scope of the invention is to be determined by reference to the claims that follow.
[0044] In the description and claims of the present application, each of the verbs "comprise", "include", "contain" and "have", and variations thereof, are used in an inclusive sense, to specify the presence of the stated item but not to exclude the presence of additional items.

Claims (18)

  1. CLAiMS: 1. An adjustable light assembly, comprising: a component having a curved surface being a segment of a circle defining an axis at a center of the circle; a piezo actuator having a tip in sliding contacting with the curved sm-face of the component; and a light source fixed with respect to one of the piezo actuator and the component; wherein said one of the piezo actuator and the component with respect to which the light source is fixed is pivotable about the axis relative to the other of the piezo actuator and the component in response to an electric signal applied to the piezo actuator.
  2. 2. The adjustable light assembly of claim 1, wherein: the piezo actuator compnses a first end and a second end opposite to each other; and the tip extends from the first end.
  3. 3. The adjustable light assembly of claim 2, wherein the piezo actuator further comprises: first and second main surfaces opposite to each other and extending between the first and second ends of the piezo actuator; first and second side surfaces opposite to each other and extending between the first and second ends of the piezo actuator; two pairs of discrete electrodes disposed on the first main surface; and a common electrode disposed on the second main surface.
  4. 4. The adjustable light assembly of claim 3, wherein: the light source is fixed to the first side surface of the piezo actuator; the second end of the piezo actuator is fixed to a point on the axis; and the curved surface of the component is immobile relative to the axis.
  5. 5. The adjustable light assembly of claim I, wherein: the light source is fixed to the piezo actuator; and the curved surface of the component is immobile relative to the axis.S
  6. 6. The adjustable light assembly of claim 1, wherein the light source is fixed with respect to the curved surface of said component which is pivotable about the axis.
  7. 7. The adjustable light assembly of claim 1, wherein the light source is a gas filled light bulb.
  8. 8. The adjustable light assembly of claim 1, wherein the light source is an LED.
  9. 9. The adjustable light assembly of claim 1, further comprising another piezo actuator, wherein: one of the piezo actuators is configured for adjusting light cone illuminated by the light source at one plane; and the other is configured for adjusting the light cone illuminated by light source at another plane which is perpendicular to the one plane.
  10. 10. An adjustable Ught system, comprising: a master control unit; and a plurality of adjustable light assemblies controlled by the master control unit.each adjustable light assembly comprising: a light source; a component having a curved surface being a segment of a circle defining an axis at a center of the circle; a piezo actuator having a tip in sliding contact with the curved surface; and a power supply configured to supply voltage to the light source, wherein: the light source is fixed with respect to one of the piezo actuator and the component; and said one of the piezo actuator and the component with respect to which the light source is fixed is pivotable about the axis relative to the other of the piezo actuator and the component in response to an electric signal sent from the master control unit and applied to the piezo actuator.
  11. ii. The adjustable light system of claim 10, wherein: the light source is fixed to the piezo actuator; and the curved surface of said component is immobile relative to the axis.
  12. 12. The adjustable light system of claim 10, wherein: the piezo actuator comprises a first end fixed to a point on the axis; a second end opposite to the first end; and the tip extends from the second end of the piezo actuator.
  13. 13. The adjustable light system of claim 12, wherein the piezo actuator further comprises: first and second main surfaces opposite to each other and extending between the first and second ends of the piezo actuator; first and second side surfaces opposite to each other and extending between the first and second ends of the piezo actuator; two pairs of discrete electrodes disposed on the first main surface; and a common electrode disposed on the second main surface.
  14. 14. The adjustable light system of claim 10, wherein the light source is fixed to the curved surface of the component which is pivotable about the axis.
  15. 15. The adjustable light system of claim 10, wherein the light source is a gas filled light bulb.
  16. 16. A vehicle comprising an adjustable light system. wherein the adjustable light system comprises: a master control unit; and at least one adjustable light assembly controlled by the master control unit, the adjustable light assembly comprising: a light source; a component having a curved surface being a segment of a circle defining an axis at a center thereof; a piezo actuator having a tip in sflding contact with the curved surface; and a power supply configured to supply voltage to the light source, wherein: the Ught source is fixed with respect to one of the piezo actuator and the component; and said one of the piezo actuator and the component with respect to which the light source is fixed is pivotable about the axis relative to the other of the piezo actuator and the component in response to an electric signal sent from the master control unit and applied to the piezo actuator.
  17. 17. The vehicle of claim 16. wherein the adjustable light assembly further compnses: a mounting plate fixed to the vehicle; a shaft pivotably mounted to the mounting plate and defining another axis perpendicular to the axis, the other of the piezo actuator and the component being fixed to the shaft; and another piezo actuator fixed to the mounting plate and having a tip in sliding contact with the shaft for driving the shaft together with the other of the piezo actuator and the component to rotate about the another axis.
  18. 18. The vehicle of claim 16, wherein the adjustable light system comprises at least two adjustable light assemblies respectively controlled by the master control unit.
GB1315828.2A 2013-09-05 2013-09-05 Adjustable light system with piezo actuator Withdrawn GB2517948A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1315828.2A GB2517948A (en) 2013-09-05 2013-09-05 Adjustable light system with piezo actuator
DE201420104106 DE202014104106U1 (en) 2013-09-05 2014-09-02 Adjustable lighting system with piezoelectric actuator
CN201420508441.8U CN204124033U (en) 2013-09-05 2014-09-04 Car light control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1315828.2A GB2517948A (en) 2013-09-05 2013-09-05 Adjustable light system with piezo actuator

Publications (2)

Publication Number Publication Date
GB201315828D0 GB201315828D0 (en) 2013-10-23
GB2517948A true GB2517948A (en) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB1315828.2A Withdrawn GB2517948A (en) 2013-09-05 2013-09-05 Adjustable light system with piezo actuator

Country Status (3)

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CN (1) CN204124033U (en)
DE (1) DE202014104106U1 (en)
GB (1) GB2517948A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544772A (en) * 2015-11-26 2017-05-31 Johnson Electric Sa Headlight shutter assembly for vehicular adaptive lighting system
WO2018024506A1 (en) * 2016-08-01 2018-02-08 Philips Lighting Holding B.V. Adjustable luminaire and method using harvested nfc signals
WO2021005143A1 (en) * 2019-07-09 2021-01-14 Aml Systems Drive system for rotating a first device relative to a second device about an axis of motion

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0790148A1 (en) * 1996-02-16 1997-08-20 MAGNETI MARELLI S.p.A. Corrector device for the trim of a headlight especially for automobiles, actuated by a piezoelectric motor
FR2845330A1 (en) * 2002-10-04 2004-04-09 Valeo Vision Headlamp for motor vehicle, uses piezoelectric motor to displace inside reflector to alter position of screens to control beam spread from lamp
DE10321564A1 (en) * 2003-05-14 2004-12-16 Audi Ag Vehicle headlamp having a piezo-optical element which affects the optical properties of the light emitting surface
CN1657338B (en) * 2004-02-19 2011-05-04 德昌电机股份有限公司 Adjustable headlight
DE102010001206A1 (en) * 2010-01-26 2011-07-28 Robert Bosch GmbH, 70469 Adjusting device for adjusting components e.g. outer mirror and headlight, of motor car, has piezoelectric element divided into segments in plane that runs perpendicular to direction of actuator, where segments are controlled individually
EP2354647A2 (en) * 2010-02-02 2011-08-10 Valeo Vision Device for moving an element of a lighting and/or signalling device of an automobile and operating method for such a device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9642498A (en) 1998-10-25 2000-05-15 Nanomotion Ltd. Driver for piezoelectric motors

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0790148A1 (en) * 1996-02-16 1997-08-20 MAGNETI MARELLI S.p.A. Corrector device for the trim of a headlight especially for automobiles, actuated by a piezoelectric motor
FR2845330A1 (en) * 2002-10-04 2004-04-09 Valeo Vision Headlamp for motor vehicle, uses piezoelectric motor to displace inside reflector to alter position of screens to control beam spread from lamp
DE10321564A1 (en) * 2003-05-14 2004-12-16 Audi Ag Vehicle headlamp having a piezo-optical element which affects the optical properties of the light emitting surface
CN1657338B (en) * 2004-02-19 2011-05-04 德昌电机股份有限公司 Adjustable headlight
DE102010001206A1 (en) * 2010-01-26 2011-07-28 Robert Bosch GmbH, 70469 Adjusting device for adjusting components e.g. outer mirror and headlight, of motor car, has piezoelectric element divided into segments in plane that runs perpendicular to direction of actuator, where segments are controlled individually
EP2354647A2 (en) * 2010-02-02 2011-08-10 Valeo Vision Device for moving an element of a lighting and/or signalling device of an automobile and operating method for such a device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544772A (en) * 2015-11-26 2017-05-31 Johnson Electric Sa Headlight shutter assembly for vehicular adaptive lighting system
WO2018024506A1 (en) * 2016-08-01 2018-02-08 Philips Lighting Holding B.V. Adjustable luminaire and method using harvested nfc signals
WO2021005143A1 (en) * 2019-07-09 2021-01-14 Aml Systems Drive system for rotating a first device relative to a second device about an axis of motion
FR3098633A1 (en) * 2019-07-09 2021-01-15 Aml Systems Drive system for rotating a first device relative to a second device about an axis of rotation.

Also Published As

Publication number Publication date
DE202014104106U1 (en) 2015-04-07
GB201315828D0 (en) 2013-10-23
CN204124033U (en) 2015-01-28

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