• 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:
    An optical unit (18) comprises a light source (20) and a rotatable reflector (22) configured to reflect light (L1) emitted from the light source (20) and to rotate about an axis of rotation (R). ) in one direction. The rotatable reflector (22) is provided with a reflective surface (22a) so that a desired light distribution pattern is formed by scanning a light from a light source reflected by the rotatable reflector while the rotatable reflector rotates. . The light source includes a first light emitting portion configured to be illuminated upon forming a first light distribution pattern that primarily illuminates an area below a horizontal line, and a second light emitting portion. configured to be lit when forming a second light distribution pattern that illuminates an area at least greater than the horizontal line.
    公开号:FR3066449A1
    申请号:FR1854085
    申请日:2018-05-16
    公开日:2018-11-23
    发明作者:Hidetada Tanaka；Kazutoshi Sakurai
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is based on and has priority over Japanese patent application n ° 2017-098227, filed on May 17, 2017 with the Japanese Patent Office, the description of which is incorporated here in its entirety for reference.
    TECHNICAL FIELD The present description relates to an optical unit and, more particularly, an optical unit used for a vehicle headlight.
    BACKGROUND [0003] A device has recently been proposed which forms a predetermined light distribution diagram by reflecting the light emitted by a light source towards the front part of a vehicle and by scanning the area which is in front of the vehicle. with reflected light. For example, an optical unit has been proposed which includes a rotary reflector which rotates in a direction about an axis of rotation while reflecting the light emitted by a light source, and a plurality of light sources which include elements light emission. The rotary reflector is provided with a reflecting surface so that a desired light distribution diagram is formed by the light from the light source reflected by the rotary reflector while the rotary reflector is rotating (see, for example, the request published Japanese patent No. 2015026628).
    SUMMARY A headlight unit which includes the optical unit described above is intended to form a light distribution diagram for a driving beam, and a separate headlight unit is required to form a light distribution diagram for beam crossing.
    The present description has been made in view of this situation. For this, the present description provides a new optical unit capable of forming a plurality of light distribution diagrams with a simple structure.
    In order to solve the problem described above, an optical unit according to one aspect of the present description comprises: a light source; and a rotary reflector which rotates in a direction about an axis of rotation while reflecting light emitted from the light source. The rotary reflector is provided with a reflecting surface so that a desired light distribution diagram is formed by scanning light from a light source reflected by the rotary reflector while the rotary reflector is rotating, and the light source comprises: a first light emitting portion configured to be turned on when forming a first light distribution diagram which mainly illuminates an area less than a horizontal line; and a second light emitting portion configured to be turned on when forming a second light distribution diagram which illuminates an area at least greater than the horizontal line.
    According to the aspect, a plurality of light distribution diagrams having different lighting zones can be formed by using a rotary reflector which rotates in a direction around the axis of rotation while reflecting the light emitted by the light source. In addition, the first light emitting part and the second light emitting part may have one or more light emitting elements.
    The light source may further include a third light emitting portion configured to emit light constituting a cut-off line on the vehicle side near the horizontal line during the formation of the first light distribution diagram. The third light emitting part can be arranged in an area between the first light emitting part and the second light emitting part. Thus, it is possible to change the position of the cut-off line on the vehicle side by scanning the light emitted by the third light emitting part and by controlling the switching on / off of the third light emitting part.
    The first light emitting part has a plurality of first light emitting elements which are arranged in a zigzag along a predetermined direction, and the first light emitting elements each have a surface of rectangular light emitting, and a side of the rectangular light emitting surface is provided along the predetermined direction. The second light emitting portion has a plurality of second light emitting elements which are zigzag along the predetermined direction, and the second light emitting elements each have a rectangular light emitting surface , and a side of the rectangular light emitting surface is provided along the predetermined direction. The third light emitting part has third light emitting elements disposed between the first light emitting elements and the second light emitting elements, and one side of the rectangular light emitting surface of the third light emitting element is disposed along the predetermined direction. Thus, the dark areas due to the spaces between the elements are less likely to occur in the light distribution diagram.
    The optical unit may further comprise a controller configured to control the ignition state of the light source so that the duration of ignition of the third part of light emission when the first distribution diagram of light is formed becomes shorter than the duration of ignition of the first part of light emission. Thus, it becomes possible, for example, to lift only the upper end of the cut-off line on the vehicle side.
    The first light emission part can be turned on when the second light distribution diagram is formed. Thus, a new light distribution diagram other than the first light distribution diagram and the second light distribution diagram can be implemented.
    The optical unit may further comprise a projection lens configured to project the light reflected by the rotary reflector in a lighting direction of the optical unit. Thus, a light source image can be clearly projected in front of the optical unit.
    In addition, any combination of the components described above and a conversion of the expressions of this description from, for example, a method, a device, and a system are also effective as an aspect of this description.
    According to the present description, a plurality of light distribution diagrams can be formed with a simple structure.
    The previous summary is illustrative only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, other aspects, embodiments and features will become apparent with reference to the following drawings and detailed description.
    BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a horizontal sectional view of a vehicle headlight according to one embodiment.
    Figure 2 is a front view of the vehicle headlight according to the present embodiment.
    Figure 3 is a side view which schematically illustrates a configuration of a rotary reflector according to the present embodiment.
    Figure 4 is a top view which schematically illustrates a configuration of the rotary reflector according to the present embodiment.
    Figure 5 is a schematic view of a first light source according to the present embodiment, on which the first light source is viewed from the front.
    Figure 6A is a schematic view which illustrates a state in which a first light-emitting part and a third light-emitting part in an on state are reflected by a stationary rotary reflector and projected forward in the form of a light source image. Figure 6B is a view which illustrates a first light distribution diagram formed when the light source image illustrated in Figure 6A is scanned due to the rotation of the rotary reflector.
    Figure 7A is a schematic view illustrating a state in which a second light-emitting portion in an on state is reflected by a stationary rotary reflector and is projected forward as a light source image. Figure 7B is a view which illustrates a second light distribution diagram formed when the light source image illustrated in Figure 7A is scanned due to the rotation of the rotary reflector.
    Figure 8A is a schematic view illustrating a state in which a fourth light-emitting portion in an on state is reflected by a stationary rotary reflector and is projected forward as a light source image. Figure 8B is a view which illustrates a third light distribution diagram formed when the light source image illustrated in Figure 8A is scanned due to the rotation of the rotary reflector.
    FIG. 9 is a view which illustrates a light distribution diagram PH ′ for a driving beam formed when all the light emitting elements of the first light source and a second light source are switched on and scanned .
    Figure 10 is a view illustrating a device for controlling a vehicle headlight according to the present embodiment.
    Figure 11 is a horizontal sectional view of a vehicle headlight according to a second embodiment.
    DETAILED DESCRIPTION In the following detailed description, reference is made to the accompanying drawings, which form part of it. The illustrative embodiments described in the detailed description, in the drawings, and in the claims are not intended to be limiting. Other embodiments can be used, and other modifications can be made, without departing from the scope of the claims.
    Hereinafter, embodiments of the present description will be described with reference to the accompanying drawings. Identical or equivalent components, elements, and processes illustrated in each of the drawings will be indicated by the same symbols, and redundant descriptions thereof will be omitted. In addition, the embodiment is not intended to limit the present description, but is illustrative of the present description. All the characteristics described in the embodiment or the combinations thereof are not necessarily essential to the present description.
    The optical unit of this description can be used for different types of vehicle headlights. Hereinafter, a description will be made of a case in which the optical unit of the present description is applied to the headlights of vehicles among the headlights of vehicles.
    [First embodiment] (vehicle headlight) [0030] Figure 1 is a horizontal sectional view of a vehicle headlight according to the present embodiment. Figure 2 is a front view of the vehicle headlight according to the present embodiment. In addition, in Figure 2, some of the components are omitted.
    A vehicle headlight 10 according to the present embodiment is a right-hand front headlight mounted on the right side of the front end of an automobile and has the same structure as the front headlight mounted on the left side, except that it is bilaterally symmetrical. Therefore, in the following, the right side vehicle headlight 10 will be described in detail, and a description of the left side vehicle headlight will be omitted.
    As illustrated in Figure 1, the vehicle headlight 10 includes a headlight body 12 having a concave portion which opens forward. The front opening of the headlight body 12 is covered by a transparent front cover 14 so as to form a headlight chamber 16. The headlight chamber 16 functions as a space in which an optical unit 18 is contained. The optical unit 18 is a headlight unit configured to irradiate the variable driving beam and the passing beam. The variable driving beam is controlled to change the shape of the light distribution diagram for the driving beam. For example, an unlit area (light protection part) can be generated in part of the light distribution diagram.
    An optical unit 18 according to the present embodiment comprises: a first light source 20; a condensing lens 23 as the main optical system (optical element), configured to change an optical path of a first light L1 emitted by a first light source 20 and to orient the modified optical path towards a vane 22a of a rotary reflector 22; the rotary reflector 22 configured to reflect the first light L1 while rotating about an axis of rotation R; a projection lens 24; a second light source 26 disposed between the first light source 20 and the projection lens 24; a diffusion lens 28 as the main optical system (optical element), and configured to direct a second light L2 emitted by the second light source 26 towards the vane 22a; and a controller 29.
    In the first light source 20, sixteen elements are arranged in the form of a matrix. In the second light source 26, four elements are arranged in a row.
    The projection lens 24 comprises: a condensing part 24a configured to condense and project the first light L1 reflected by the rotary reflector 22 in the lighting direction of the optical unit (to the left in FIG. 1) ; and a diffusion unit 24b configured to diffuse and project the second light L2 reflected by the rotary reflector 22 in the lighting direction of the optical unit. Thus, a light source image can be clearly projected in front of the optical unit 18.
    Figure 3 is a side view which schematically illustrates a configuration of a rotary reflector according to the present embodiment. Figure 4 is a top view which schematically illustrates a configuration of the rotary reflector according to the present embodiment.
    The rotary reflector 22 rotates in a direction around the axis of rotation R using a drive source such as a motor 34. In addition, the rotary reflector 22 is provided with a blade 22a which serves as a reflecting surface so as to form a desired light distribution pattern by scanning the light from each light source reflected by the rotary reflector while the rotary reflector is rotated. Thus, the rotary reflector emits visible light from a light emitting part as a light beam by its rotation operation, and forms the desired light distribution diagram by scanning the light beam.
    The rotary reflector 22 is provided with two blades 22a of the same shape which function as a reflecting surface around 20 of a cylindrical rotary part 22b. The axis of rotation R of the rotary reflector 22 is inclined relative to an optical axis Ax and is provided on a plane comprising the optical axis Ax and each light source. Thus, the axis of rotation R is provided substantially in parallel with a light scanning plane (light beam) of each light source which is scanned in the lateral direction by the rotation. Thus, the thickness of the optical unit can be reduced. Here, the scanning plane can be understood as a fan-shaped plane formed by continuously connecting the paths of the lights of the respective light sources, which are, for example, scanning lights.
    In addition, the shape of the blade 22a of the rotary reflector 22 is twisted so that an angle formed by the optical axis Ax and the reflecting surface changes in a circumferential direction centered on the axis of rotation R. Thus, as illustrated in FIG. 4, it is possible to carry out a scan using the light from the first light source 20 or the second light source 26.
    For each light source, semiconductor light emitting elements such as LEDs, EL elements and 40 LD elements are used. The shape of the convex projection lens 24 having a condensing part 24a and a diffusing part 24b can be appropriately selected according to light distribution characteristics such as the light distribution diagram and the intensity distribution. lighting required, but an aspherical lens 45 or a free curved face lens can also be used.
    The controller 29 controls the on / off control of the first light source 20 and the second light source 26 and the rotation control of the motor 34 on the basis of an external control signal. The first light source 20 is mounted on a heat sink 30 and the second light source 26 is mounted on a heat sink 32.
    Figure 5 is a schematic view of a first light source according to the present embodiment on which the first light source is seen from the front. In Figure 5, the illustration of the condensing lens 23 is omitted. In addition, the light source image of FIG. 5 is reversed up and down by the projection lens 24.
    As illustrated in FIG. 5, the first light source 20 comprises: a first light-emitting part 36 which is turned on during the formation of a first light distribution diagram which mainly illuminates an area less than the horizontal line; a second light emitting portion 38 which is turned on when forming a second light distribution diagram which illuminates at least one area above the horizontal line; and a third light emitting part 40 which emits light which constitutes a vehicle-side cut-off line close to the horizontal line when the first light distribution diagram is formed. The third light-emitting part 40 is arranged in an area located between the first light-emitting part 36 and the second light-emitting part 38.
    The first light emitting part 36 is configured so that the first five light emitting elements SU to S15 are arranged along a horizontal direction (line HH) in the form of a zigzag (that is, that is, a vertical position of a certain element is shifted up or down relative to an adjacent element). Each of the first light emitting elements S11 to S15 has a rectangular light emitting surface, and one side of the rectangular light emitting surface is provided parallel to the horizontal direction.
    In the second light emitting part 38, nine second light emitting elements S21 to S29 are arranged in a zigzag along the horizontal direction. Each of the second light emitting elements S21 to S29 has a rectangular light emitting surface, and one side of the rectangular light emitting surface is provided parallel to the horizontal direction.
    The third light-emitting part 40 has two third light-emitting elements S31 and S32 arranged between the first light-emitting elements S11 to S15 and the second light-emitting elements S21 to S29, and one side of the rectangular light emitting surface is provided parallel to the horizontal direction. Thus, the dark areas due to the spaces between the elements are less likely to occur in the light distribution diagram.
    In addition, for each light emitting element, a semiconductor light emitting element which can easily control the switching on / off in a short time is suitable. Examples of these light emitting elements include a light emitting device (LED), a laser diode (LD), and a light emitting element.
    Figure 6A is a schematic view which illustrates a state in which a first light-emitting part and a third light-emitting part in an on state are reflected by a stationary rotary reflector and projected forward as a light source image. Figure 6B is a view which illustrates a first light distribution diagram formed when the light source image illustrated in Figure 6A is scanned due to the rotation of the rotary reflector.
    The light source images LU to L15 illustrated in FIG. 6A correspond to the respective light emission surfaces of the first light emission elements S11 to S15. In addition, the light source images L31 and L32 correspond to the respective light emitting surfaces of the third light emitting elements S31 and S32. In addition, the scanning patterns P11 to P15, P31 and P32 illustrated in Figure 6B are formed when the images of light sources LU to L15, L31 and L32 are scanned, and a light distribution diagram PL for the beam of crossover is formed as the first light distribution diagram which mainly illuminates an area below a horizontal line when respective scanning patterns overlap.
    In addition, when the third light emitting elements S31 and S32 are lit continuously in the same manner as the first light emitting elements S11 to S15, as illustrated in FIG. 6B, not only the vehicle side cut-off line
    CL1 but also the cutoff line on the opposite track side CL2 of the light distribution diagram PL for the passing beam are formed above the horizontal line. In this case, the passenger of the opposite vehicle may be dazzled.
    Therefore, the control unit 29 controls the ignition state of the first light source 20 so that the duration of ignition of the third light emitting elements S31 and S32 during the formation of the light distribution diagram PL for the passing beam becomes shorter than the duration of ignition of the first light-emitting elements S11 to S15. More specifically, the controller 29 switches on the elements corresponding to the moment at which the images of light sources L31 and L32 of the third light emitting elements S31 and S32 pass through a zone on the left of the line VV illustrated in FIG. 6B, and turns off the corresponding elements when passing through the right area of the VV line. Thus, it becomes possible, for example, to lift only the upper end of the cut-off line on the vehicle side CL1. In addition, the position (length) of the cut-off line on the vehicle side CL1 can be changed by controlling the switching on / off of the third light-emitting elements S31 and S32 while scanning the light emitted by the third light elements d light emission S31 and S32.
    Figure 7A is a schematic view illustrating a state in which a second light-emitting portion in a lit state is reflected by a stationary rotary reflector and is projected forward as a light source image. Figure 7B is a view which illustrates a second light distribution diagram formed when the light source image illustrated in Figure 7A is scanned due to the rotation of the rotary reflector.
    The images of light sources L21 to L29 illustrated in FIG. 7A correspond to the respective light emission surfaces of the second light emission elements S21 to S29. In addition, the scanning patterns P21 to P29 illustrated in Fig. 7B are formed when the light source images L21 to L29 are scanned, and a light distribution diagram PH for the passing beam as the second distribution diagram light that illuminates an area at least greater than a horizontal line is formed when respective scanning patterns overlap. In addition, the first light emitting portion 36 can be turned on when forming the light distribution diagram PH for the driving beam. Thus, it is possible to implement a new light distribution diagram in which the light distribution diagram PL for the passing beam and the light distribution diagram PH for the driving beam overlap.
    Next, the second light source 26 will also be described. The second light L2 emitted by the second light source 26 is reflected in the vane of the rotary reflector 22 at a location closer to the projection lens 24 than a location at which the first light L1 emitted by the first light source 20 is reflected in the blade of the rotary reflector 22. For this reason, the light emitted by the second light source 26 can be widened in order to illuminate a large area. Thus, the diffusion lens 28 is disposed near the light emitting surface of the second light source 26. Therefore, the light source image can be magnified by the second light L2 which is reflected in the reflector rotary 22 and passes through the diffusing part 24b of the projection lens 24. In addition, the second light source 26 has a fourth light emitting part 42 in which four fourth light emitting elements S41 to S44 are arranged in a row (see, for example, Figure 1).
    Figure 8A is a schematic view which illustrates a state in which a fourth light-emitting part in a lit state is reflected by a stationary rotary reflector and is projected forward as a light source image. Figure 8B is a view which illustrates a third light distribution diagram formed when the light source image illustrated in Figure 8A is scanned due to the rotation of the rotary reflector.
    The images of light sources L41 to L44 illustrated in FIG. 8A correspond to the respective light emitting surfaces of the fourth light emitting elements S41 to S44. In addition, the scanning patterns P41 to P44 illustrated in Figure 8B are formed when the light source images L41 to L44 are scanned, and a light distribution diagram PL 'for scattering the passing beam is formed as a third light distribution diagram which mainly illuminates an area having a lower part wider than a horizontal line when the respective scanning patterns overlap.
    FIG. 9 is a view which illustrates a light distribution diagram PH ′ for the driving beam formed when all the light emitting elements of the first light source and of the second light source are switched on and scanned. As illustrated in Figure 9, it is possible to implement a new light distribution diagram other than the first light distribution diagram and the second light distribution diagram.
    As described above, the optical unit 18 according to the present embodiment can form a plurality of light distribution diagrams PL, PL ', PH and PH' having different lighting zones at the using the rotary reflector 22 which rotates in a direction around the axis of rotation while reflecting the light emitted by the first light source 20 and the second light source 26.
    In addition, although the first light emitting part 36 and the second light emitting part 38 may be provided as completely different areas as the first light source 20 of this embodiment, some of the elements light-emitting or light-emitting areas may overlap. Thus, there may be a light emitting element or a light emitting area used for the first light distribution diagram or the second light distribution diagram.
    Figure 10 is a view illustrating a device for controlling a vehicle headlight according to the present embodiment. As illustrated in FIG. 10, the control device 10 of the vehicle headlight 10 according to the present embodiment comprises: a camera 44 configured to photograph the front side of a vehicle and an environment thereof; a radar 46 configured to detect the distance and the presence of another vehicle or a pedestrian in front of the vehicle; a switch 48 configured to control the ignition state of the vehicle headlight and the lighting mode thereof (selection of a light distribution diagram for the high beam and a distribution diagram of light for the passing beam, automatic control mode, or the like) by a driver; a detection unit 50 configured to detect a steering state; a sensor 52 such as a vehicle speed sensor and an acceleration sensor; a controller 29; a motor 34; a first light source 20; and a second light source 26.
    The controller 29 controls the rotation of the motor 34 and the switching on / off of each light-emitting element in the first light-emitting part 36 until the fourth light-emitting part 42 from the first light source 20 and from the second light source 26 on the basis of the information acquired by the camera 44, the radar 46, the switch 48, the detection unit 50, and the sensor 52. Thus, a new optical unit 18 capable of forming a plurality of light distribution diagrams with simple configuration can be implemented.
    [Second embodiment] In the vehicle headlight 10 according to the first embodiment, the shape of the blade 22a of the rotary reflector 22 is twisted so that an angle formed by the optical axis Ax and the reflecting surface changes when the shape of the blade 22a is oriented in the circumferential direction centered on the axis of rotation R. At the same time, in the vehicle headlight 10 according to a third embodiment, a polygonal mirror is used as a rotary reflector, and there is no substantial difference from the first embodiment. Therefore, in the following explanations, the rotary reflector will be described in detail. The same components as in the first embodiment will be indicated by the same reference numbers, and a description of these will be omitted.
    Figure 11 is a horizontal sectional view of a vehicle headlight according to the second embodiment. The vehicle headlight 110 according to the third embodiment has a headlight body 12 having a concave portion which opens forward. The front opening of the headlight body 12 is covered by a transparent front cover 14 so as to form a headlight chamber 16 in the headlight body. The headlight chamber 16 functions as a space in which an optical unit 118 is contained. The optical unit 118 is a headlight unit configured to irradiate the variable driving beam and the passing beam.
    The optical unit 118 according to the present embodiment comprises: a light source 220; a condensation lens 23 as the main optical system (optical element) and configured to change the optical path of the first light L1 emitted by the light source 220 and to direct the first light L1 towards the reflecting surface 122a of a mirror polygonal 122; the polygonal mirror 122 configured to rotate around the axis of rotation R while reflecting the first light L1; a projection lens 124; and a controller 29.
    In the light source 220, several elements are arranged in the form of a matrix. The projection lens 124 condenses and projects the first light L1 reflected in the polygonal mirror 122 in the lighting direction (to the left in FIG. 1) of the optical unit. Thus, the light source image can be clearly projected in front of the optical unit 118.
    The polygonal mirror 122 rotates in a direction around the axis of rotation R using a drive source such as a motor.
    In addition, the polygon mirror 122 is provided with a reflecting surface 122a so as to form a desired light distribution diagram by scanning the light from each light source reflected by the polygon mirror while the polygon mirror is rotating. Thus, the polygon mirror 122 emits visible light from the light emitting part as a light beam by its rotation operation, and forms the desired light distribution diagram by scanning the light beam.
    The axis of rotation R of the polygonal mirror 122 is substantially perpendicular to the optical axis Ax and is provided so as to cross a plane which includes the optical axis Ax and the light source 220. In other words , the axis of rotation R is provided so as to be substantially orthogonal with respect to the light scanning plane (lighting beam) of the light source scanned in the lateral direction by the rotation. It is also possible to form the various light distribution diagrams described above in the vehicle headlight 110 using the polygonal mirror 122.
    From the above, it will be appreciated that various embodiments of the present description have been described here by way of illustration, and that various modifications can be made without departing from the scope of the present. description. Consequently, the various embodiments described here are not intended to be limiting, the real extent being indicated by the following claims.
    权利要求:
    Claims (6)
    [1" id="c-fr-0001]
    1. Optical unit (18) comprising:
    a light source (20); and a rotary reflector (22) configured to reflect light (L1) emitted by the light source (20) and to rotate about an axis of rotation (R) in a direction, in which the rotary reflector (22) is provided with a reflecting surface (22a) so that a desired light distribution pattern is formed by scanning light from a light source which is reflected by the rotary reflector (22), while the rotary reflector (22 ) rotates, and the light source (20) comprises:
    a first light emitting portion (36) configured to be turned on when forming a first light distribution (PL) diagram which mainly illuminates an area below a horizontal line;
    and a second light emitting portion (38) configured to be turned on when forming a second light distribution (PH) diagram which illuminates an area at least greater than the horizontal line.
    [2" id="c-fr-0002]
    The optical unit (18) according to claim 1, wherein the light source (20) further comprises a third light emitting part (40) configured to emit light which forms a cut line on the vehicle side (CL1 ) near the horizontal line when the first light distribution diagram (PL) is formed, and the third light emitting part (40) is arranged in an area between the first light emitting part (36) and the second light emitting part (38).
    [3" id="c-fr-0003]
    3. The optical unit (18) according to claim 2, wherein the first light emitting part (36) has a plurality of first light emitting elements (S11 to S15) which are arranged in a zigzag along a predetermined direction, in which the first light emitting elements (S11 to S15) each have a rectangular light emitting surface, and one side of the rectangular light emitting surface is provided along the predetermined direction , the second light emitting part (38) has a plurality of second light emitting elements (S21 to S29) which are arranged in a zigzag along the predetermined direction, in which the second light emitting elements (S21 to S29) each have a rectangular light emitting surface, and one side of the rectangular light emitting surface is provided along the predetermined direction, and the tr third light emitting part (40) has a third light emitting element (S31, S32) disposed between the first light emitting elements (SU to S15) and the second light emitting elements (S21 to S29), wherein one side of the rectangular light emitting surface of the third light emitting element is provided along the predetermined direction.
    [4" id="c-fr-0004]
    4. Optical unit (18) according to one of claims 2 or 3, further comprising:
    a controller (29) configured to control an ignition state of the light source (20) so that an ignition duration of the third light-emitting part (40) when the first light pattern is formed light distribution (PL) becomes less than an ignition duration of the first light-emitting part (36).
    [5" id="c-fr-0005]
    5. Optical unit (18) according to one of the preceding claims, wherein the first light emitting part (36) is turned on when the second light distribution diagram (PH) is formed.
    [6" id="c-fr-0006]
    6. Optical unit (18) according to one of the preceding claims, further comprising:
    a projection lens (24) configured to project light reflected from the rotary reflector (22) in a lighting direction of the optical unit (18).
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    同族专利:
    公开号 | 公开日
    FR3066449B1|2021-09-17|
    US10670216B2|2020-06-02|
    CN208735535U|2019-04-12|
    JP2018195447A|2018-12-06|
    US20180335192A1|2018-11-22|
    CN108954206B|2021-08-10|
    DE102018207482A1|2018-11-22|
    JP6905862B2|2021-07-21|
    CN108954206A|2018-12-07|
    引用文献:
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    JP6517008B2|2014-12-03|2019-05-22|株式会社小糸製作所|Lighting unit|
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    JP6905862B2|2017-05-17|2021-07-21|株式会社小糸製作所|Optical unit|JP6905862B2|2017-05-17|2021-07-21|株式会社小糸製作所|Optical unit|
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    法律状态:
    2019-04-10| PLFP| Fee payment|Year of fee payment: 2 |
    2019-11-15| PLSC| Search report ready|Effective date: 20191115 |
    2020-04-14| PLFP| Fee payment|Year of fee payment: 3 |
    2021-04-12| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017098227|2017-05-17|
    JP2017098227A|JP6905862B2|2017-05-17|2017-05-17|Optical unit|
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