JP2008041385A - Vehicular headlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that conventional vehicular headlight has a large-sized and complicated structure for a drive mechanism. <P>SOLUTION: The vehicular headlight has a drive unit 11 which moves the predetermined light distribution pattern LP in almost horizontal direction by rotating a projector lens 4 and a shade 5 around the vertical axis V-V (rotational axis 16). The projector lens 4 and the shade 5 are set up such that the predetermined light distribution pattern LP is irradiated mainly in the direction of the front side of the vehicle, when an axis Z2-Z2 for the projector lens 4 is faced to the inside of the vehicle as its initial state. By rotating the projector lens 4 and the shade 5 in the direction opposite to the orientation of the axis Z2-Z2 for the projector lens 4 in initial state, the predetermined light distribution pattern LP moves to the direction of the outside of the vehicle. As a result, the drive unit 11 can be of small-sized and simple structure, accordingly reducing the manufacturing cost. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a projector-type vehicle headlamp that is a headlamp, a fog lamp, or the like and that can obtain a predetermined light distribution pattern having a cut-off line. In particular, when traveling on a curved road, so-called AFS (Adaptive Front Lighting System), that is, a projector type vehicle headlight of a variable light distribution type, which deflects the irradiation light from the headlamp toward the side on which the vehicle is about to turn. It is about a light.

  This type of projector-type vehicle headlamp has been conventionally used (see, for example, Patent Document 1). Hereinafter, a conventional vehicle headlamp will be described. A conventional vehicle headlamp has a bulb, a reflector that reflects light from the bulb, a shade that cuts off part of the reflected light from the reflector, and a cut-off line that transmits the remaining reflected light. A collimator lens that projects forward as a predetermined light distribution pattern, and a drive mechanism that deflects the reflector with respect to the collimator lens.

  Hereinafter, the operation of the conventional vehicle headlamp will be described. When the bulb is lit, the light from the bulb is reflected by the reflector to the collimator lens side, a portion of the reflected light is shielded by the shade, and the remaining reflected light has a predetermined arrangement with a cutoff line in front of the vehicle from the collimator lens. Irradiated with a light pattern. Here, when the optical axis of the reflector is deflected with respect to the collimator lens via the drive mechanism, a predetermined light distribution pattern having a cut-off line is deflected left and right toward the turning side of the vehicle.

  However, since the conventional vehicle headlamp needs to deflect the entire reflector and the bulb, the drive mechanism has a large and complicated structure.

JP-A-6-251605

  The problem to be solved by the present invention is that in the conventional vehicle headlamp, the drive mechanism has a large and complicated structure.

  The present invention (invention according to claim 1) includes a driving device that rotates a projection lens and a shade so as to be rotatable about a substantially vertical axis to move a predetermined light distribution pattern in a substantially horizontal direction. The projection lens in the initial state is set so that a predetermined light distribution pattern is mainly irradiated in the vehicle front direction when the axis of the projection lens is in the initial state facing the inside of the vehicle. A predetermined light distribution pattern is moved in the vehicle outer side direction by rotating in the direction opposite to the direction of the axis.

  In the present invention (the invention according to claim 2), the rotation axes of the projection lens and the shade are located inside the vehicle with respect to the optical axis of the reflecting surface of the reflector, and the axis of the projection lens is the optical axis of the reflecting surface of the reflector. The axis of the projection lens is located outside the vehicle with respect to the optical axis of the reflecting surface of the reflector.

  Further, according to the present invention (the invention according to claim 3), an arc portion having a substantially circular shape centering on the rotation axis of the projection lens and the shade is provided in the shade, and the arc portion of the shade is In the rotation range of the projection lens and the shade, the projection lens and the shade are always located at or near the focal point of the projection lens or the second focal point of the reflecting surface of the reflector.

  The vehicle headlamp according to the present invention (the invention according to claim 1) rotates a projection lens and a shade that are smaller and lighter than the reflector body and the bulb. Therefore, a mechanism for rotating the projection lens and the shade is provided. Can be made into a small and simple structure. As a result, the vehicle headlamp according to the present invention (the invention according to claim 1) can be manufactured at low cost.

  Moreover, the vehicle headlamp according to the present invention (the invention according to claim 1) is configured such that the projection lens and the shade are directed from the state in which the axis of the projection lens is directed toward the inside of the vehicle to the front of the vehicle (reflector). From a state where a predetermined light distribution pattern having a cut-off line is mainly irradiated in the front direction of the vehicle by being rotated to a state facing the outside of the vehicle through a state substantially parallel to the optical axis of the reflection surface of The vehicle can be moved to a state where it is irradiated to the outside of the vehicle through a state where it is irradiated to the outside of the vehicle. As a result, the vehicle headlamp of this invention (the invention according to claim 1) rotates the axis of the projection lens from the inside of the vehicle to the outside of the vehicle through the front of the vehicle with respect to the optical axis of the reflecting surface of the reflector. Therefore, the projection lens axis and the reflecting surface of the reflector are compared with those in which the axis of the projection lens is rotated in one direction from the front of the vehicle to the optical axis of the reflecting surface of the reflector. The angle formed with the optical axis can be reduced. Thereby, the vehicle headlamp according to the present invention (the invention according to claim 1) can largely move the predetermined light distribution pattern having the cut-off line in the horizontal direction without being distorted (disintegrated).

  Moreover, the vehicle headlamp according to the present invention (the invention according to claim 2) greatly moves a predetermined light distribution pattern having a cut-off line toward the outside of the vehicle by means for solving the above-described problems. Suitable for driving on curved roads.

  Further, in the vehicle headlamp according to the present invention (the invention according to claim 3), even when the projection lens and the shade are rotated around the rotation axis, the arc portion of the shade is the focal point of the projection lens or the vicinity thereof or the reflection of the reflector. Always located at or near the second focal point of the surface. For this reason, the vehicular headlamp according to the present invention (the invention according to claim 3) can always obtain a clear and accurate cut-off line even when a predetermined light distribution pattern moves in the horizontal direction.

  Embodiments of a vehicle headlamp according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments. In the drawing, reference sign “VU-VD” indicates vertical lines on the upper and lower sides of the screen. Reference sign “HL-HR” indicates horizontal lines on the left and right of the screen. Further, in this specification and claims, “upper”, “lower”, “front”, “rear”, “left”, “right” are used when the vehicle lamp according to the present invention is mounted on a vehicle. "Up", "Down", "Front", "Back", "Left", "Right".

  Hereinafter, the configuration of the vehicle headlamp according to this embodiment will be described. The vehicle headlamps according to this embodiment are respectively provided on the left and right of the front portion of the automobile (vehicle). Hereinafter, the vehicle headlamp equipped on the right side of the front portion of the automobile will be described. In addition, the structure of the vehicle headlamp mounted on the left side of the front portion of the automobile is almost symmetrical.

  In FIG. 1, reference numeral 1 denotes a vehicle headlamp according to this embodiment, which is provided on the right side of the front portion of the automobile. The vehicle headlamp 1 is, for example, a projector-type headlamp. As shown in FIG. 1, the vehicle headlamp 1 includes a discharge lamp 2 as a light source, a reflector 3, a projection lens (an optical lens, a condenser lens, and a convex lens) 4, a shade 5, and a frame member 8. And a driving device 11, a lamp housing 12, and a lamp lens (for example, a transparent outer lens or an outer cover) 13.

  The discharge lamp 2, the reflector 3, the projection lens 4, the shade 5, the frame member 8, and the driving device 11 constitute a lamp unit. The lamp unit is disposed in a lamp chamber 14 defined by the lamp housing 12 and the lamp lens 13 via, for example, an optical axis adjusting mechanism 15.

  The discharge lamp 2 is a so-called high pressure metal vapor discharge lamp such as a metal halide lamp, a high intensity discharge lamp (HID), or the like. The discharge lamp 2 is detachably attached to the reflector 3 via a socket mechanism 6. The discharge lamp 2 has a light emitting unit 7. In addition to the discharge lamp 2, the light source may be a halogen bulb or an incandescent bulb. The discharge lamp 2 is turned on / off manually by a driver turning on / off a lamp switch (not shown), or automatically turned on / off by a control device via an illuminance sensor.

  The reflector 3 is attached to the lamp housing 12 via the optical axis adjusting mechanism 15. The reflector 3 has a hollow concave shape that is open on the front side (light irradiation direction side of the main lamp unit 1) and closed on the rear side. A circular through hole 9 for inserting the discharge lamp 2 is provided in the center of the closing portion on the rear side of the reflector 3.

  A reflective surface 10 is formed on the inner concave surface of the reflector 3 by vapor deposition of aluminum or silver coating. The reflecting surface 10 reflects light from the light emitting part 7 of the discharge lamp 2 toward the shade 5 and the projection lens 4 side. The reflective surface 10 is a reflective surface such as an ellipse (spheroid) or a free-form surface (NURBS surface) based on an ellipse (spheroid), and the vertical cross section of FIG. The horizontal cross section consists of a parabolic surface or a reflective surface having a deformed parabolic surface. For this purpose, the reflecting surface 10 has a first focal point F1, a second focal point (a focal line on the horizontal section) F2, and a rotation axis, that is, an optical axis Z1-Z1. The free-form surface (NURBS surface) of the reflecting surface 10 is a NURBS free-form surface (Non-Uniform Rational B-Spline Surface) described in “Mathematical Elemennts for Computer Graphics” (Devid F. Rogers, J Alan Adams). is there.

  The projection lens 4 is an aspherical convex lens. The front side of the projection lens 4 forms a convex aspheric surface, while the rear side of the projection lens 4 forms a flat aspheric surface. The projection lens 4 is fixedly held on the frame member 8. The projection lens 4 has a lens focal point (a meridional image plane that is a focal plane on the object space side) F3 and an axis (optical axis) Z2-Z2. The focal point F3 of the projection lens 4 and the second focal point F2 of the reflecting surface 10 are substantially coincident with each other or are located close to each other. As shown in FIG. 3B, the axis Z2-Z2 of the projection lens 4 and the optical axis Z1-Z1 of the reflecting surface 10 are shifted to the left and right when positioned in parallel. That is, the axis Z2-Z2 of the projection lens 4 is arranged outside the vehicle (the right side of the front part of the automobile) with respect to the optical axis Z1-Z1 of the reflecting surface 10 according to this embodiment. In the right). The axis Z2-Z2 of the projection lens 4 and the optical axis Z1-Z1 of the reflecting surface 10 may substantially coincide. The projection lens 4 transmits the remaining reflected light that is not shielded by the shade 5 out of the reflected light from the reflecting surface 10 and projects it in front of the vehicle as a predetermined light distribution pattern.

  The shade 5 has a plate structure (in this example, a flat thin steel plate structure) that is inexpensive to manufacture. The shade 5 shields a part of the reflected light from the reflecting surface 10 toward the projection lens 4 and has a predetermined light distribution pattern LP having a cut-off line CL, for example, FIGS. 4 (A), (B), ( The light distribution pattern for passing and the light distribution pattern for expressways shown in C) and (D) are formed. The upper edge of the shade 5 forms a cut-off line CL of the light distribution pattern LP, and the lens focal point F3 of the projection lens 4 or the vicinity thereof, or the second focal point F2 of the reflecting surface 10 or Located along its vicinity. The shade 5 is fixedly held on the frame member 8.

  The projection lens 4 and the shade 5 are disposed so as to be rotatable about a vertical axis VV. That is, the upper and lower rotating shafts (swivel shafts) 16 are respectively fixed in the vertical direction above and below the frame member 8. The upper and lower rotary shafts 16 are attached to the top and bottom of the front end portion of the reflector 3 so as to be rotatable about the vertical axis VV. The rotation axis 16 (the vertical axis VV) of the projection lens 4 and the shade 5 is closer to the inside of the vehicle (on the right side of the front part of the automobile) than the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3. In the vehicle headlamp 1 according to this embodiment, which is equipped, it is located on the left side). Note that the rotation axis 16 (the vertical axis VV) of the projection lens 4 and the shade 5 is the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3 or its vicinity, or the axis Z2- of the projection lens 4. It may be located at or near Z2.

  The driving device 11 is connected to the lower rotating shaft 16. The driving device 11 is attached to the lamp housing 12. The driving device 11 rotates the lower rotating shaft 16 to rotate the projection lens 4 and the shade 5 left and right around the vertical axis VV as shown in FIG. As shown in FIG. 4, the light distribution pattern LP is moved to the left and right to be changed.

  As shown in FIGS. 2 and 3A, the state where the axis Z2-Z2 of the projection lens 4 faces the inside of the vehicle is defined as an initial state. In the initial state, as shown in FIG. 4A, the light distribution pattern LP is mainly irradiated in the front direction of the vehicle (that is, the elbow point (the lower horizontal cutoff line and the diagonal cutoff line). (Intersection point) P is set so as to be at the vertical line VU-VD on the top and bottom of the screen or in the vicinity thereof. As shown in FIGS. 3B and 3C, the projection lens 4 and the shade 5 are rotated in the direction opposite to the direction of the axis Z2-Z2 of the projection lens 4 in the initial state (rightward direction). 4B and 4C, the light distribution pattern LP moves in the vehicle outer direction (right direction). On the contrary, as shown in FIG. 3D, the projection lens 4 and the shade 5 are rotated in the direction (left direction) of the axis Z2-Z2 of the projection lens 4 in the initial state. As shown to (D), the said light distribution pattern LP moves to a vehicle inner side direction (left side direction).

  The shade 5 has a part (center angle) of a substantially circle (circle indicated by a two-dot chain line in FIG. 2) centered on the projection lens 4 and the rotation axis 16 (vertical axis V-V) of the shade 5. A circular arc portion 17 having a shape of θ) is provided (see FIG. 2). The arc portion 17 of the shade 5 has a focal point F3 of the projection lens 4 or the vicinity thereof or a second focal point F2 of the reflecting surface 10 of the reflector 3 or the range thereof in the range in which the projection lens 4 and the shade 5 rotate. Always located in the vicinity.

  The driving device 11 is driven in accordance with the rotation of a steering handle (not shown). The driving device 11 starts driving when the curve radius of the road becomes a predetermined value, for example, 500R or less, and when it becomes 500R or more. The drive is stopped. The driving device 11 is connected to a steering angle sensor (not shown) via a control device (not shown). The steering angle sensor detects a rotation angle and a rotation speed of a steering handle and outputs a detection signal to the control device. The control device calculates a curve radius of a road on which the vehicle travels based on a detection signal from the steering angle sensor, and determines whether the calculated curve radius of the road is 500R or less. When it is determined that the curve radius of the road is 500 R or less, a driving signal is output to the driving device 11. As a result, the driving device 11 starts driving when the curve radius of the road becomes 500R or less. Further, when the control device determines that the curve radius of the road is 500R or more, it outputs a drive stop signal to the drive device 11. As a result, the driving device 11 stops driving when the curve radius of the road becomes 500R or more. In addition, a vehicle speed sensor may be connected to the control device together with the steering angle sensor, and the vehicle speed may be added to the rotation angle or the rotation speed of the steering handle as an element for determining the drive start of the drive device 11. Further, the driving device 11 may be directly linked to the steering handle without passing through the control device and the steering angle sensor.

  The vehicle headlamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below.

  First, the discharge lamp 2 is turned on. Then, light is emitted from the light emitting portion 7 of the discharge lamp 2. This light is reflected by the reflecting surface 10 of the reflector 3 toward the shade 5 and the projection lens 4. A part of this reflected light is shielded by the shade 5, and the remaining reflected light has a predetermined light distribution pattern LP having the cut-off line CL and the elbow point P shown in FIG. 4, for example, a light distribution pattern for passing or a highway. A light distribution pattern is formed. The remaining reflected light travels toward the projection lens 4, passes through the projection lens 4, and is projected (radiated and irradiated) in front of the automobile as a predetermined light distribution pattern LP.

  Here, when the automobile is traveling straight or substantially straight, the vehicular headlamp 1 is in the initial state, that is, the axis Z2-Z2 of the projection lens 4 is in the vehicle as shown in FIG. 2 and FIG. It is in the state facing inward. When the vehicular headlamp 1 is in the initial state, as shown in FIG. 4A, the elbow point P is positioned at or near the vertical line VU-VD above and below the screen, that is, the light distribution pattern. The LP is in a state of being irradiated mainly in the front direction of the vehicle.

  Then, the steering handle is rotated. Then, the steering angle sensor detects the rotation of the steering handle and outputs a detection signal to the control device. The control device outputs a drive signal to the drive device 11 based on the detection signal of the steering angle sensor. Since the driving device 11 starts driving, the projection lens 4 and the shade 5 rotate around the rotation axis 16 (vertical axis VV) as shown in FIGS. 3B, 3C, and 3D. To do. As a result, as shown in FIGS. 4B, 4C, and 4D, the light distribution pattern LP moves and changes from side to side.

  For example, when the automobile is traveling on a gentle right curve, the vehicular headlamp 1 has a projection lens 4 and a shade 5 as shown in FIGS. 2 and 3A, as shown in FIG. From the initial state, the projection lens 4 rotates about the rotation axis 16 (vertical axis VV) in the direction opposite to the direction of the axis Z2-Z2 (rightward direction). At this time, the axis Z2-Z2 of the projection lens 4 is located on the outer side (right side) of the vehicle with respect to the optical axis Z1-Z1 of the reflecting surface 10. As a result, as shown in FIG. 4B, the light distribution pattern LP moves in the vehicle outer direction (right direction).

  Further, when the vehicle is traveling on a steep right curve, the vehicular headlamp 1 has a projection lens 4 and a shade 5 as shown in FIGS. 2 and 3A, as shown in FIG. From the initial state or the state shown in FIG. 3B, the projection lens 4 rotates about the rotation axis 16 (vertical axis VV) in the direction opposite to the direction of the axis Z2-Z2 (rightward direction). As a result, as shown in FIG. 4C, the light distribution pattern LP moves in the vehicle outer direction (right direction).

  Conversely, when the vehicle is traveling on the left curve, as shown in FIG. 3D, the vehicle headlamp 1 has the projection lens 4 and the shade 5 in the initial state shown in FIG. 2 and FIG. From the state, the projection lens 4 rotates about the rotation axis 16 (vertical axis VV) in the direction of the axis Z2-Z2 (leftward direction). As a result, as shown in FIG. 4D, the light distribution pattern LP moves in the vehicle inner side direction (left side direction).

  In the vehicle headlamp 1 according to this embodiment that is mounted on the right side of the front portion of the automobile when the automobile is traveling on the left curve, the projection lens 4 and the shade 5 are shown in FIGS. From the initial state shown in A), it is not necessary to rotate around the rotation axis 16 (vertical axis VV) in the direction of the axis Z2-Z2 (leftward direction) of the projection lens 4. In this case, a light distribution pattern substantially similar to the light distribution pattern LP shown in FIG. 4D can be obtained by the vehicle headlamp mounted on the left side of the front portion of the automobile.

  The vehicle headlamp 1 according to this embodiment has the above-described configuration and action, and the effects thereof will be described below.

  Since the vehicle headlamp 1 according to this embodiment rotates the projection lens 4 and the shade 5 that are smaller and lighter than the reflector body and the bulb, a mechanism for rotating the projection lens 4 and the shade 5 is provided. A small and simple structure can be achieved. As a result, the vehicle headlamp 1 according to this embodiment can be manufactured at low cost.

  Moreover, in the vehicle headlamp 1 according to this embodiment, the projection lens 4 and the shade 5 are directed from the state in which the axis Z2-Z2 of the projection lens 4 is directed to the inside of the vehicle to the front of the vehicle ( The predetermined light distribution pattern LP having the cut-off line CL and the elbow point P is rotated by rotating the reflector 3 to a state facing the outside of the vehicle via a state substantially parallel to the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3. It is possible to move from a state of being mainly irradiated in the vehicle front direction to a state of being irradiated to the outside of the vehicle through a state of being slightly irradiated to the outside of the vehicle. As a result, in the vehicle headlamp 1 according to this embodiment, the axis Z2-Z2 of the projection lens 4 is set to the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3 from the inside of the vehicle through the front of the vehicle. Compared with the case where the axis Z2-Z2 of the projection lens 4 is rotated in one direction from the front of the vehicle to the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3, for example, the outside of the vehicle. Thus, the angle formed by the axis Z2-Z2 of the projection lens 4 and the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3 can be reduced. Thereby, the vehicle headlamp 1 according to this embodiment can move the predetermined light distribution pattern LP having the cut-off line CL and the elbow point P to the left and right in the horizontal direction without being distorted (disintegrated).

  Further, in the vehicle headlamp 1 according to this embodiment, the rotation axis 16 (vertical axis V-V) of the projection lens 4 and the shade 5 is inside the vehicle with respect to the optical axis Z1-Z1 of the reflecting surface 10 of the reflector 3. When the axis Z2-Z2 of the projection lens 4 is substantially parallel to the optical axis Z1-Z1 of the reflection surface 10 of the reflector 3, the axis Z2-Z2 of the projection lens 4 is of the reflection surface 10 of the reflector 3. It is located outside the vehicle with respect to the optical axis Z1-Z1. As a result, the vehicle headlamp 1 according to this embodiment can move the predetermined light distribution pattern LP having the cut-off line CL greatly in the vehicle outer direction, and is suitable for traveling on a curved road.

  Further, in the vehicular headlamp 1 according to this embodiment, even when the projection lens 4 and the shade 5 are rotated about the rotation axis, the arc portion 17 of the shade 5 is at or near the focal point F3 of the projection lens 4 or the reflector 3. It is always located at or near the second focal point F2 of the reflective surface 10. For this reason, the vehicle headlamp 1 according to this embodiment can always obtain a clear and accurate cut-off line CL even if the predetermined light distribution pattern LP moves in the horizontal direction.

  Hereinafter, examples other than the above embodiment will be described. In the above embodiment, a projector type headlamp will be described. However, in the present invention, a lamp other than the headlamp, such as a fog lamp, may be used.

It is a longitudinal cross-sectional view (vertical cross-sectional view) which shows the Example of the vehicle headlamp concerning this invention. Similarly, it is the II-II sectional view (horizontal sectional view) in Drawing 1 of a reflector, a projection lens, and a shade except a discharge lamp. Similarly, it is explanatory drawing which shows the rotation state of a projection lens and a shade with respect to the reflector except a discharge lamp. Similarly, it is explanatory drawing which shows the light distribution pattern which changes with rotation of a projection lens and a shade.

Explanation of symbols

1 Vehicle headlamp 2 Discharge lamp (light source)
DESCRIPTION OF SYMBOLS 3 Reflector 4 Projection lens 5 Shade 6 Socket mechanism 7 Light emission part 8 Frame member 9 Through-hole 10 Reflecting surface 11 Drive apparatus 12 Lamp housing 13 Lamp lens 14 Lamp chamber 15 Optical axis adjustment mechanism 16 Rotating shaft 17 Arc part LP Predetermined light distribution Pattern CL Cut-off line P Elbow point HL-HR Horizontal horizontal line VU-VD Vertical vertical line Z1-Z1 Optical axis of reflector reflecting surface Z2-Z2 Axis of projection lens (optical axis)
F1 First focal point of reflecting surface of reflector F2 Second focal point of reflecting surface of reflector F3 Focal point of projection lens VV Vertical axis

Claims (3)

In a projector type vehicle headlamp with variable light distribution,
A light source;
A first focal point has an ellipse located in the vicinity of the light source or a reflection surface based on the ellipse, and a reflector that reflects the light from the light source;
A shade that is located at or near the second focal point of the reflecting surface of the reflector, shields part of the reflected light from the reflecting surface of the reflector, and forms a predetermined light distribution pattern having a cutoff line;
The focal point is located at or near the second focal point of the reflecting surface of the reflector, and transmits the remaining reflected light that has not been shielded by the shade out of the reflected light from the reflecting surface of the reflector. A projection lens that projects the front of the vehicle as a light pattern;
A driving device that rotates the projection lens and the shade so as to be rotatable about a substantially vertical rotation axis to move the predetermined light distribution pattern in a substantially horizontal direction;
With
The projection lens and the shade are in a state in which the predetermined light distribution pattern is mainly irradiated in the vehicle front direction when the projection lens and the shade are in an initial state where the axis of the projection lens faces the inside of the vehicle. The predetermined light distribution pattern is moved in the vehicle outer direction by rotating in the direction opposite to the direction of the axis of the projection lens in the initial state.
A vehicular headlamp characterized by that. The rotation axis of the projection lens and the shade is located on the inner side of the vehicle than the optical axis of the reflection surface of the reflector,
When the axis of the projection lens is substantially parallel to the optical axis of the reflecting surface of the reflector, the axis of the projection lens is positioned outside the vehicle with respect to the optical axis of the reflecting surface of the reflector.
The vehicle headlamp according to claim 1. The shade is provided with an arc portion having a substantially circular shape centering on the rotation axis of the projection lens and the shade,
The arc portion of the shade is always located at or near the focal point of the projection lens or the second focal point of the reflecting surface of the reflector, or in the vicinity thereof, in a range in which the projection lens and the shade rotate.
The vehicle headlamp according to claim 1 or 2, characterized in that

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