Patent Publication Number: US-10760761-B2

Title: Vehicle lamp

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a national stage application of PCT/JP2017/035962 filed on Oct. 3, 2017, and claims priority to Japanese Patent Application No. JP-A-2016-198762 filed on Oct. 7, 2016, and JP-A-2016-198763 filed on Oct. 7, 2016, the contents of which are incorporated herein by reference in their entirety. 
     BACKGROUND 
     Technical Field 
     The disclosure relates to a projector type vehicle lamp. 
     Related Art 
     Conventionally, there is known a projector type vehicle lamp configured to irradiate light emitted from a light source disposed behind a projection lens toward the front through the projection lens. 
     Patent document 1 describes a configuration in which an auxiliary lens for controlling light emitted from the light source is disposed between the projection lens and the light source in such a vehicle lamp. 
     Further, Patent document 2 describes a configuration in which a movable shade configured to be able to adopt a light-shielding position in which a part of light emitted from the light source and directed to the projection lens is shielded and a light-shielding release position in which the shielding is released is disposed between the projection lens and the light source in such a vehicle lamp. 
     [Patent document 1] JP-A-2016-39021 
     [Patent document 2] JP-A-2015-82339 
     SUMMARY OF INVENTION 
     When the auxiliary lens is disposed between the projection lens and the light source as in the vehicle lamp described in the Patent document 1 it is possible to increase the degree of freedom in a shape of a light distribution pattern formed by light irradiated from the projection lens. 
     However, in the vehicle lamp described in the Patent document 1, the position of the auxiliary lens is fixed, and it is not possible to perform a fine light distribution control according to a vehicle travelling situation. 
     Further, in the vehicle lamp described in the Patent document 2, a light distribution pattern formed when the movable shade is in the light-shielding position is formed as a light distribution pattern whose lateral width is smaller than that of a light distribution pattern formed when the movable shade is in the light-shielding release position. At this time, it is possible to perform a road surface drawing (that is, to intentionally form a pattern of light on the road surface) by light irradiated on the road surface in front of the vehicle. 
     However, in the vehicle lamp described in the Patent document 2, the shape of the light distribution pattern is changed by the movement of the movable shade, but the formation position thereof is not changed. Therefore, it is not possible to efficiently perform light irradiation on the road surface in front of the vehicle. 
     One or more embodiments in the present disclosure provides a projector type vehicle lamp capable of performing a fine light distribution control according to a vehicle travelling situation. 
     One or more embodiments in the present disclosure provides a projector type vehicle lamp capable of forming light distribution patterns of different shapes and efficiently performing light irradiation on the road surface in front of the vehicle. 
     One or more embodiments in the present disclosure adopts a configuration having a predetermined movable lens. 
     A vehicle lamp of the present disclosure comprises: a projection lens; and a light source disposed behind the projection lens, wherein the vehicle lamp is configured to form a required light distribution pattern by irradiating light emitted from the light source forward through the projection lens, wherein a movable lens configured to be movable in a required direction intersecting with an optical axis of the projection lens is disposed between the projection lens and the light source, and wherein a maximum luminous intensity position of the light distribution pattern is changed by moving the movable lens in the required direction. 
     The specific configuration of the “required light distribution pattern” is not particularly limited. 
     The type of the “light source” is not particularly limited. For example, a light emitting element such as a light emitting diode or a laser diode, or a light source bulb, or the like can be adopted. 
     A specific mode of the movement of the “movable lens” is not particularly limited, as long as it is configured to be movable in a required direction intersecting with the optical axis of the projection lens. For example, the movement by linear reciprocating motion or the movement by pivotal motion or the like can be adopted. 
     A specific direction of the “required direction” is not particularly limited, as long as it intersects with the optical axis of the projection lens. 
     One or more embodiments of the present disclosure adopts a configuration including a predetermined light control unit. 
     A vehicle lamp of the present disclosure comprises: a projection lens; and a light source disposed behind the projection lens, wherein the vehicle lamp is configured to form a first light distribution pattern by irradiating light emitted from the light source forward through the projection lens, wherein a first light control unit configured to be able to shield a part of light which is emitted from the light source and which is directed to the projection lens is disposed between the projection lens and the light source, wherein a second light distribution pattern having a lateral width smaller than a lateral width of the first light distribution pattern is formed by a light-shielding action of the first light control unit, and wherein the vehicle lamp comprises a second light control unit configured to displace a formation position of the second light distribution pattern downward when a light-shielding by the first light control unit is performed. 
     The specific shape of the “first light distribution pattern” is not particularly limited. 
     The type of the “light source” is not particularly limited. For example, a light emitting element such as a light emitting diode or a laser diode, or a light source bulb, or the like can be adopted. 
     A specific configuration of the “first light control unit” is not particularly limited, as long as it can shield a part of light emitted from the light source and directed to the projection lens. For example, a movable shade or a liquid crystal shutter or the like can be adopted. 
     A specific configuration of the “second light control unit” is not particularly limited, as long it can displace the formation position of the second light distribution pattern toward the lower side when the shielding by the first light control unit is performed. For example, a deflection lens or a leveling device or the like can be adopted. 
     The vehicle lamp according to the disclosure is configured as a projector type vehicle lamp configured to form a required light distribution pattern. Further, as the movable lens disposed between the projection lens and the light source moves in a required direction, the maximum luminous intensity position of the light distribution pattern is changed. In this way, the following operational effects can be obtained. 
     That is, the maximum luminous intensity position of the light distribution pattern can be changed according to the movement position of the movable lens, and accordingly, the formation position and light distribution of the light distribution pattern can be changed. Therefore, it is possible to perform a fine light distribution control according to a vehicle travelling situation. 
     In this manner, according to the disclosure, it is possible to perform a fine light distribution control according to a vehicle travelling situation in the projector type vehicle lamp. 
     In the above configuration, by adopting a configuration in which a spot-like light distribution pattern is formed as the required light distribution pattern, it is possible to perform a fine light distribution control according to a vehicle travelling situation while improving the distant visibility by this light distribution pattern. 
     In the above configuration, by adopting a configuration in which the maximum luminous intensity position is changed in the right and left direction by the movement of the movable lens, the formation position of the light distribution pattern at the time of straight travelling and curved travelling can be changed in the right and left direction. In this way, light irradiation adapted to the road shape or the like can be performed. 
     In the above configuration, by adopting a configuration in which a shade for shielding a part of light emitted from the light source and directed to the movable lens is fixed to the movable lens, the shape of the light distribution pattern can be also changed according to a vehicle travelling situation. 
     Further, the presence of the shade makes it possible to reduce the possibility of giving a glare to a driver of a preceding vehicle, a driver of an oncoming vehicle, or a crossing pedestrian or the like. 
     At that time, by adopting a configuration in which a longitudinally elongated slit is formed in this shade, a band of light linearly extending forward can be formed on the road surface in front of the vehicle, thereby enhancing the calling attention function for a crossing pedestrian or the like. 
     In the above configuration, by adopting a configuration in which a reflector for reflecting light emitted from the light source toward the projection lens is provided and the reflector is configured to reflect light emitted from the light source toward the vicinity of a rear focus point of the projection lens, it is possible to easily form a spot-like light distribution pattern as a required light distribution pattern. 
     Further, the vehicle lamp according to the disclosure is configured as a projector type lamp so as to form the first light distribution pattern. In addition, the second light distribution pattern having a lateral width smaller than that of the first light distribution pattern can be formed by the light-shielding action of the first light control unit disposed between the projection lens and the light source, and the formation position of the second light distribution pattern can be displaced downward by the second light control unit when the light-shielding is performed. In this way, the following operational effects can be obtained. 
     That is, since the second light distribution pattern having a lateral width smaller than that of the first light distribution pattern is formed by the light-shielding action of the first light control unit and the formation position thereof is displaced downward by the second light control unit, it is possible to efficiently perform the light irradiation on the road surface in front of the vehicle, as compared with the light distribution pattern in which only a part of the first light distribution pattern is cut off. 
     In this manner, according to the disclosure, it is possible to form light distribution patterns of different shapes and efficiently perform light irradiation on the road surface in front of the vehicle in the projector type vehicle lamp. 
     Further, since the formation position of the second light distribution pattern is displaced downward in this manner, it is possible to easily perform the road surface drawing by light irradiation on the road surface in front of the vehicle, and it is possible to reduce the possibility of giving a glare to a driver of a preceding vehicle, a driver of an oncoming vehicle, or a crossing pedestrian or the like. 
     In the above configuration, by adopting a configuration in which a spot-like light distribution pattern is formed as the first light distribution pattern, the distant visibility can be improved by the first light distribution pattern, and the road surface in front of the vehicle can be locally brightly irradiated by the second light distribution pattern. 
     In the above configuration, by adopting a configuration in which a longitudinally elongated band-like light distribution pattern in which both right and left side portions of the first light distribution pattern are cut off is formed as the second light distribution pattern, a band of light linearly extending forward can be formed as the road surface drawing on the road surface in front of the vehicle by the second light distribution pattern, thereby enhancing the calling attention function to the surroundings. 
     At that time, by adopting a configuration in which a light distribution pattern in which the lateral width of the upper region is larger than the lateral width of the lower region is formed as the longitudinally elongated band-like light distribution pattern, it is possible to enhance the calling attention function for a pedestrian or the like crossing the front of the vehicle by the light in the upper region. 
     In the above configuration, by adopting a configuration in which the first light control unit is configured by the movable shade configured to be able to adopt the light-shielding position and the light-shielding release position, it is possible to selectively form the first light distribution pattern and the second light distribution pattern with a simple configuration. 
     In this case, by adopting a configuration in which the second light control unit is configured by the deflection lens fixed to the movable shade, the formation position of the second light distribution pattern can be displaced downward with a simple configuration. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a side sectional view showing a vehicle lamp according to a first embodiment of the disclosure; 
         FIG. 2  is a sectional view taken along the line II-II in  FIG. 1 ; 
         FIG. 3  is a detailed view of a main part of  FIG. 1 , showing main components of the vehicle lamp according to the first embodiment; 
         FIG. 4  is a perspective view showing the main components in a disassembled state, as seen diagonally from the upper front side; 
         FIG. 5  is a perspective view showing the main components in a disassembled state, as seen diagonally from the upper rear side; 
         FIG. 6A  is a view showing a light distribution pattern formed by irradiation light from the vehicle lamp and showing a light distribution pattern formed when a movable lens is in a retracted position; 
         FIG. 6B  is a view showing a light distribution pattern formed by irradiation light from the vehicle lamp and showing a light distribution pattern formed when the movable lens is in a light control position; 
         FIG. 7  is a view similar to  FIG. 5 , showing a main part of a vehicle lamp according to a first modification of the first embodiment; 
         FIG. 8A  is a view similar to  FIG. 6A , showing an operation of the first modification; 
         FIG. 8B  is a view similar to  FIG. 6B , showing an operation of the first modification; 
         FIG. 9  is a view similar to  FIG. 3 , showing a main part of a vehicle lamp according to a second modification of the first embodiment; 
         FIG. 10  is a view similar to  FIG. 5 , showing a main part of the vehicle lamp according to the second modification; 
         FIG. 11A  is a view similar to  FIG. 6A , showing an operation of the second modification; 
         FIG. 11B  is a view similar to  FIG. 6B , showing an operation of the second modification; 
         FIG. 12  is a side sectional view showing a vehicle lamp according to a second embodiment of the disclosure; 
         FIG. 13  is a sectional view taken along the line II-II in  FIG. 12 ; 
         FIG. 14  is a detailed view of a main part of  FIG. 12 , showing main components of the vehicle lamp according to the second embodiment; 
         FIG. 15  is a perspective view showing the main components in a disassembled state, as seen diagonally from the upper front side; 
         FIG. 16  is a perspective view showing the main components in a disassembled state, as seen diagonally from the upper rear side; 
         FIG. 17A  is a view showing a light distribution pattern formed by irradiation light from the vehicle lamp and showing a first light distribution pattern; 
         FIG. 17B  is a view showing a light distribution pattern formed by irradiation light from the vehicle lamp and showing a second light distribution pattern; 
         FIG. 18  is a view similar to  FIG. 14 , showing a main part of a vehicle lamp according to a first modification of the second embodiment; 
         FIG. 19A  is a perspective view showing a shade body of the first modification as a single item; 
         FIG. 19B  is a perspective view showing a shade body of the second modification of the second embodiment as a single item; 
         FIG. 20A  is a view similar to  FIG. 17B , showing an operation of the first modification; 
         FIG. 20B  is a view similar to  FIG. 17B , showing an operation of the second modification; and 
         FIG. 21  is a view similar to the main part of  FIG. 13 , showing a movable shade of a third modification of the second embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments of the disclosure will be described with reference to the drawings. In embodiments in the present disclosure, numerous specific details are set forth in order to provide a more thorough understanding of the disclosure. However, it will be apparent to one of ordinary skill in the art that these specific details are not required. In other instances, well-known features have not been described in detail. 
       FIG. 1  is a side sectional view showing a vehicle lamp  10  according to a first embodiment of the disclosure, and  FIG. 2  is a sectional view taken along the line II-II in  FIG. 1 . Meanwhile, in  FIGS. 1 and 2 , the direction indicated by X is the “front” of the lamp (also the “front” of the vehicle), the direction indicated by Y is the “right direction,” and the direction indicated by Z is the “upper direction.” The same is applied to other figures. 
     As shown in  FIGS. 1 and 2 , the vehicle lamp  10  according to the present embodiment is a projector type lamp unit used in a state of being incorporated as a part of a headlamp. The vehicle lamp  10  includes a projection lens  12 , a light source unit  14  disposed on the rear side of a rear focus point F of the projection lens  12 , a reflector  16  configured to reflect light emitted from the light source unit  14  toward the projection lens  12 , and a movable lens  20  disposed between the light source unit  14  and the projection lens  12 . 
     The projection lens  12  is a plano-convex aspheric lens having a front convex surface and a rear flat surface. The projection lens  12  is configured to project a light source image formed on a rear focal plane that is a focal plane including a rear focus point F thereof, as an inverted image, on a virtual vertical screen in front of the lamp. The projection lens  12  is supported by a lens holder  32  at its outer peripheral flange portion. The lens holder  32  is supported by a base member  34  via a pair of right and left brackets  36 . 
     The light source unit  14  is configured so that light emitted from a laser diode  14   a  as a light source is focused on a light emitting portion  14   c  made of a phosphor by a condenser lens  14   b  and is emitted as white diffused light from the light emitting portion  14   c . At that time, the emission light from the light source unit  14  is set such that the emitted light from the center position of the light emitting portion  14   c  has the highest luminous intensity. The light emitting portion  14   c  of the light source unit  14  has a circular surface shape. The light source unit  14  is supported on the base member  34  in a state where the surface thereof is oriented in a direction inclined rearward with respect to the vertical upper side. 
     The reflector  16  is supported by a pair of right and left brackets  36  in a state of being disposed so as to cover the light source unit  14  from the upper side. A reflecting surface  16   a  of the reflector  16  is configured by a spheroidal surface in which the light emission center of the light emitting portion  14   c  of the light source unit  14  is a first focus and the rear focus point F of the projection lens  12  is a second focus. In this way, the reflector  16  condenses light emitted from the light source unit  14  in the vicinity of the rear focus point F of the projection lens  12 . 
     The movable lens  20  includes a deflection lens  28  for changing the direction of light reflected from the reflector  16  and a lens holder  22  for supporting the deflection lens  28  via a metal holder  24 . 
     The lens holder  22  is pivotably supported by an actuator (e.g., solenoid, etc.)  30  via a pivot pin  26 . At that time, the pivot pin  26  is disposed to extend in a right and left direction below an optical axis Ax and in front of the rear focus point F, and both ends of thereof are supported by the actuator  30  and a support bracket (not shown). The actuator  30  and the support bracket are supported on the base member  34 . 
     The movable lens  20  can adopt a light control position (position indicated by a solid line in  FIG. 1 ) and a retracted position (position indicated by a two-dot chain line in  FIG. 1 ) pivoted rearward by a predetermined angle from the light control position by the driving of the actuator  30 . The actuator  30  is driven when an operation of a beam selector switch (not shown) is performed. 
       FIG. 3  is a detailed view of a main part of  FIG. 1 , showing main components of the vehicle lamp  10  according to the first embodiment. 
     Further,  FIGS. 4 and 5  are perspective views showing a state in which the main components of the vehicle lamp  10  are disassembled into respective elements.  FIG. 4  is a perspective view showing the deflection lens  28 , the lens holder  22  and the metal holder  24  constituting the movable lens  20  as seen diagonally from the upper front side, and  FIG. 5  is a perspective view showing these elements as seen diagonally from the upper rear side. 
     As shown in  FIGS. 3 to 5 , the lens holder  22  is a die-cast molded product and has a pivot pin supporting portion  22 A for supporting the pivot pin  26 , an inclination portion  22 B extending obliquely upward and rearward from the pivot pin supporting portion  22 A, an upright wall portion  22 C extending vertically upward from a rear end edge of the inclination portion  22 B, and a counterweight portion  22 D extending downward from the pivot pin supporting portion  22 A. The inclination portion  22 B is extended to both right and left sides and curved forward from the position below the optical axis Ax, in a plan view. Further, the upright wall portion  22 C and the counterweight portion  22 D are formed to have a lateral width narrower than the pivot pin supporting portion  22 A and the inclination portion  22 B. 
     Further, an opening portion  22 Ba penetrating the inclination portion  22 B in the front and rear direction is formed in the inclination portion  22 B, and an opening portion  22 Ca penetrating the upright wall portion  22 C in the front and rear direction is also formed in the upright wall portion  22 C. The opening portion  22 Ba has a substantially rectangular opening shape which is laterally elongated. On the other hand, the opening portion  22 Ca has a substantially rectangular opening shape slightly laterally elongated and is formed to surround the optical axis Ax. 
     A horizontal portion  22 C 1  extending forward along a horizontal plane is formed at a lower end portion of the upright wall portion  22 C. A protrusion  22 C 1   a  protruding downward so as to face the opening portion  22 Ba is formed at the center portion in the right and left direction on the lower surface of the horizontal portion  22 C 1 . 
     A rectangular concave portion  22 Cb spreading from the opening portion  22 Ca toward the right and left sides is formed on the rear surface of the upright wall portion  22 C. Beads  22 Cb 1  extending in the front and rear direction are formed on the right and left wall surfaces and upper surface of the rectangular concave portion  22 Cb. 
     An upper end surface of the upright wall portion  22 C extends along the horizontal plane. A protrusion  22 Cc is formed at the central portion of the upper end surface in the right and left direction, and protrusions  22 Cd are formed at portions near both ends thereof in the right and left direction. 
     A columnar pin  22 Ce protruding rearward is formed at a portion in the vicinity below the opening portion  22 Ca in the center portion of the rear surface of the upright wall portion  22 C in the right and left direction. 
     The metal holder  24  is a member formed by processing a metal plate having a spring property and has a bilaterally-symmetrical shape with respect to the optical axis Ax. 
     The metal holder  24  has a vertical surface portion  24 A extending along the vertical plane orthogonal to the optical axis Ax, an upper surface portion  24 B extending forward from an upper end edge of the vertical surface portion  24 A, leaf spring portions  24 C extending downward from a rear end edge of the upper surface portion  24 B on both right and left sides of the vertical surface portion  24 A, and a lower surface portion  24 D extending forward from a lower end edge of the vertical surface portion  24 A. 
     The vertical surface portion  24 A is formed to have substantially the same vertical width as the upright wall portion  22 C of the lens holder  22  and formed to have substantially the same lateral width as the opening portion  22 Ca of the upright wall portion  22 C. 
     An opening portion  24 Aa with a shape close to a square is formed in the center portion of the vertical surface portion  24 A in the right and left direction. The opening portion  24 Aa is formed to have substantially the same height as the vertical width of the deflection lens  28 . 
     An elongated hole  24 Ab slightly longer in the upper and lower direction is formed in the vicinity below the opening portion  24 Aa of the vertical surface portion  24 A. 
     The upper surface portion  24 B extends along the horizontal plane. A rectangular notch portion  24 Ba is formed at the center portion of the upper surface portion in the right and left direction, and rectangular opening portions  24 Bb are formed at portions near both ends thereof in the right and left direction. 
     Each leaf spring portion  24 C is extended downward and curved rearward. A semi-cylindrical portion  24 Ca, which has a semi-cylindrical shape extending in the right and left direction and protrudes forward, is formed at a portion in the vicinity of a lower end of each leaf spring portion  24 C. 
     The lower surface portion  24 D extends along the horizontal plane, and a rectangular opening portion  24 Da is formed at a portion in the vicinity of a front end thereof. 
     The deflection lens  28  is a lens made of resin, and has a lens body portion  28 A and a pair of flange portions  28 B extending to both right and left sides from the lens body portion  28 A. The deflection lens  28  has a bilaterally-symmetrical shape with respect to the optical axis Ax. 
     The pair of right and left flange portions  28 B is formed to extend in a flat plate along the vertical plane orthogonal to the optical axis Ax. The lens body portion  28 A is formed to protrude forward from both flange portions  28 B. 
     The lens body portion  28 A has a front surface  28 Aa formed in a convex curved surface shape and a rear surface  28 Ab formed in a concave curved surface shape. The rear surface  28 Ab of the lens body portion  28 A is configured by a curved surface substantially along a longitudinally elongated elliptical surface centered on a point positioned slightly above the optical axis Ax. The front surface  28 Aa of the lens body portion  28 A is configured by a curved surface in which a region on the right side of the optical axis Ax bulges forward. 
     That is, the lens body portion  28 A is formed so that its thickness is constant in the vertical cross-section but its thickness gradually increases from a left end edge to a right end edge in the horizontal cross-section. 
     In this manner, the deflection lens  28  deflects light reflected from the reflector  16  to the right side by a certain angle. The rightward deflection amount at that time is set to about 2 to 4° (e.g., about 3°). 
     The metal holder  24  and the deflection lens  28  are attached to the upright wall portion  22 C of the lens holder  22 . This attachment is carried out as follows. 
     That is, first, the deflection lens  28  is inserted into the opening portion  22 Ca of the upright wall portion  22 C of the lens holder  22  from the rear side, and both flange portions  28 B are abutted against the rectangular concave portion  22 Cb. In this manner, the lens body portion  28 A protrudes forward from the opening portion  22 Ca of the upright wall portion  22 C. 
     Subsequently, the notch portion  24 Ba formed in the upper surface portion  24 B of the metal holder  24  is engaged with the protrusion  22 Cc formed in the upper end surface of the upright wall portion  22 C to perform the positioning in the right and direction, and the pair of right and left opening portions  24 Bb formed in the upper surface portion  24 B is engaged with the pair of right and left protrusions  22 Cd formed in the upper end surface of the upright wall portion  22 C. 
     Subsequently, the semi-cylindrical portions  24 Ca of the pair of right and left leaf spring portion  24 C are pressed against the flange portions  28 B of the deflection lens  28 , thereby elastically deforming each of the leaf spring portions  24 C. 
     Then, the opening portion  24 Da formed in the lower surface portion  24 D of the metal holder  24  is engaged with the protrusion  22 C 1   a  formed in the lower surface of the horizontal portion  22 C 1  of the upright wall portion  22 C to fix the metal holder  24  to the lens holder  22 . In this way, the deflection lens  28  is positioned by being clamped by the metal holder  24  and the lens holder  22  from both front and rear sides. 
     When the movable lens  20  is in the light control position, the vertical surface portion  24 A of the metal holder  24  is arranged to extend along the vertical plane orthogonal to the optical axis Ax and, at this time, the center position of the opening portion  24 Aa is positioned slightly below the rear focus point F of the projection lens  12 . 
     Further, when the movable lens  20  is in the light control position, light reflected from the reflector  16  is deflected to the right side by the deflection lens  28 , and then, reaches the projection lens  12 . On the other hand, when the movable lens  20  is in the retracted position, light reflected from the reflector  16  directly reaches the projection lens  12 . 
       FIGS. 6A and 6B  are views perspectively showing a light distribution pattern formed on a virtual vertical screen disposed at a position of 25 m in front of the lamp by light irradiated forward from the vehicle lamp  10 . 
     A light distribution pattern PA 1  shown in  FIG. 6A  is a first light distribution pattern formed as a part of a high-beam light distribution pattern PH when the movable lens  20  is in the retracted position. A light distribution pattern PA 2  shown in  FIG. 6B  is a second light distribution pattern formed as a part of the high-beam light distribution pattern PH when the movable lens  20  is in the light control position. 
     The high-beam light distribution pattern PH shown in  FIG. 6A  is formed as a combined light distribution pattern of a basic light distribution pattern PH 0  formed by light irradiated from another vehicle lamp (not shown) and the light distribution pattern PA 1 . 
     The basic light distribution pattern PH 0  is formed as a laterally elongated light distribution pattern widely spreading in the right and left direction around H-V (vanishing point in the front direction of the lamp). 
     On the other hand, the light distribution pattern PA 1  is formed as a spot-like light distribution pattern which is slightly laterally elongated around the H-V, thereby forming a high luminous intensity area at the center of the high-beam light distribution pattern PH. The luminous intensity of the center portion of the light distribution pattern PA 1  is considerably high, but the luminous intensity of the peripheral portion thereof is relatively low. 
     The high-beam light distribution pattern PH shown in  FIG. 6B  is formed as a combined light distribution pattern of the basic light distribution pattern PH 0  and the light distribution pattern PA 2 . 
     The light distribution pattern PA 2  is formed as a light distribution pattern obtained by displacing the light distribution pattern PA 1  to the rightward direction. At that time, the rightward displacement amount of the light distribution pattern PA 2  with respect to the light distribution pattern PA 1  is about 2 to 4° (e.g., about 3°). That is, the maximum luminous intensity position of the light distribution pattern PA 2  is changed to the rightward direction with respect to the light distribution pattern PA 1 . 
     When such a light distribution pattern PA 2  is formed in the high-beam light distribution pattern PH, it is possible to enhance the distant visibility in the case where the travelling road in front of the vehicle is curved in the right side. 
     Next, an operational effect of the first embodiment will be described. 
     The vehicle lamp  10  according to the first embodiment is configured as a projector type vehicle lamp which is configured to form the light distribution pattern PA 1  irradiating the front direction of the lamp as a required light distribution pattern. Further, as the movable lens  20  disposed between the projection lens  12  and the light source unit  14  is pivoted from the light control position to the retracted position, the light distribution pattern PA 2  displaced to the rightward direction with respect to the light distribution pattern PA 1  is formed (that is, the maximum luminous intensity position of the light distribution pattern is changed). Therefore, the following operational effects can be obtained. 
     That is, the maximum luminous intensity position of the light distribution patterns PA 1 , PA 2  can be changed according to the movement position of the movable lens  20 , and accordingly, the formation positions and light distribution of the light distribution patterns PA 1 , PA 2  can be changed. Therefore, it is possible to perform a fine light distribution control according to a vehicle travelling situation. 
     In this manner, according to the present embodiment, it is possible to perform a fine light distribution control according to a vehicle travelling situation in the projector type vehicle lamp  10 . 
     At that time, in the present embodiment, the light distribution pattern PA 1  can be set as a light distribution pattern suitable for straight travelling, and the light distribution pattern PA 2  can be set as a light distribution pattern suitable for rightward turning travelling. 
     Moreover, in the present embodiment, each of the light distribution patterns PA 1 , PA 2  is formed as the spot-like light distribution pattern. Therefore, it is possible to perform a fine light distribution control according to a vehicle travelling situation while improving the distant visibility by each of the light distribution patterns PA 1 , PA 2 . 
     Further, the vehicle lamp  10  according to the present embodiment includes the reflector  16  for reflecting light emitted from the light source unit  14  toward the projection lens  12 , and the reflector  16  is configured to reflect light emitted from the light source unit  14  toward the vicinity of the rear focus point F of the projection lens  12 . Therefore, it is possible to easily form the spot-like light distribution pattern as each of the light distribution patterns PA 1 , PA 2 . 
     Meanwhile, in general, a pair of right and left vehicle lamps is attached to a vehicle. Therefore, for example, the light distribution pattern PA 2  may be formed by the right vehicle lamp, whereas a light distribution pattern bilaterally symmetrical with the light distribution pattern PA 2  with respect to the line V-V may be formed by the left vehicle lamp bilaterally symmetrical with the right vehicle lamp. Further, since the pair of right and left light distribution patterns can be selectively formed, it is possible to improve the distant visibility even when the travelling road in front of the vehicle is curved in either the left or right direction. 
     In the first embodiment, the deflection lens  28  is supported by the lens holder  22  via the metal holder  24 . However, the deflection lens  28  may be directly supported by the lens holder  22  by adhesion or the like. 
     In the first embodiment, the movable lens  20  is configured to be able to adopt the light control position and the retracted position by the pivotal movement in the front and rear direction. However, the pivotal movement in the right and left direction may be adopted, or linear reciprocating movement in the upper and lower direction or in the right and left direction may be adopted, instead of the pivotal movement. 
     In the first embodiment, as the movable lens  20  moves from the retracted position to the light control position, the light distribution pattern PA 2  displaced to the rightward direction with respect to the light distribution pattern PA 1  is formed. However, by appropriately changing the curved surface shape of the front surface  28 Aa of the lens body portion  28 A, the light distribution pattern PA 2  may be formed as a light distribution pattern obtained by changing the size and shape of the light distribution pattern PA 1 , instead of the light distribution pattern obtained by displacing the light distribution pattern PA 1  to the rightward direction. 
     In the first embodiment, light emitted from the light source unit  14  is reflected by the reflector  16  and is incident on the projection lens  12 . However, direct light from the light source unit  14  may be incident on the projection lens  12 . 
     Next, modifications of the first embodiment will be described. 
     First, a first modification of the first embodiment will be described. 
       FIG. 7  is a view similar to  FIG. 5 , showing a main part of a vehicle lamp according to the present modification. 
     As shown in  FIG. 7 , a basic configuration of the present modification is similar to that of the first embodiment, but the configurations of a metal holder  124  and a deflection lens  128  of a movable lens  120  are different from those of the first embodiment. 
     A basic configuration of the metal holder  124  of the present modification is also similar to that of the metal holder  24  of the first embodiment, but the shape of an opening portion  124 Aa formed in a vertical surface portion  124 A thereof is different from that of the first embodiment. 
     That is, in the metal holder  24  of the first embodiment, the opening portion  24 Aa has a shape close to a square. On the contrary, the shape of the opening portion  124 Aa in the metal holder  124  of the present modification is formed in a substantially trapezoidal shape in which approximately the left half region of the opening portion  124 Aa of the metal holder  124  is closed. At that time, a side end surface  124 Aa 1  located on the left side of the opening portion  124 Aa in the vertical surface portion  124 A is formed to be inclined slightly to the left side with respect to the vertical direction. 
     Further, a basic configuration of the deflection lens  128  of the present modification is similar to that of the deflection lens  28  of the first embodiment, but the horizontal cross-sectional shape of a lens body portion  128 A thereof is different from that of the first embodiment. 
     That is, the lens body portion  128 A of the present modification also has a front surface  128 Aa formed in a convex curved surface shape and a rear surface  128 Ab formed in a concave curved surface shape. At that time, the rear surface  128 Ab is configured by a curved surface substantially along a longitudinally elongated elliptical surface centered on a point positioned slightly above the optical axis Ax, and the front surface  128 Aa is configured by a curved surface in which a region on the left side of the optical axis Ax largely bulges forward. 
     In this manner, the lens body portion  128 A of the present modification is formed so that its thickness gradually increases from a right end edge to a left end edge, contrary to the lens body portion  28 A of the first embodiment. However, the uneven degree of the thickness is smaller in the lens body portion  128 A of the present modification than in the lens body portion  28 A of the first embodiment. 
     Further, in the present modification, when the movable lens  120  is in the light control position, a part of light reflected from the reflector  16  is shield by the metal holder  124 , and only the light passing through the opening portion  124 Aa is deflected to the left side by about 1 to 3° (e.g., about 2°) by the deflection lens  128 , and then, reaches the projection lens  12 . 
     That is, the metal holder  124  is adapted to function as a shade for shielding a part of light emitted from the light source unit  14  and directed to the movable lens  120 . 
       FIG. 8B  is a view perspectively showing a light distribution pattern PA 3  formed when the movable lens  120  is in the light control position, in the present modification. 
     Meanwhile,  FIG. 8A  is a view similar to  FIG. 6A  (that is, a view showing the light distribution pattern PA 1  formed when the movable lens  120  is in the retracted position). 
     As shown in  FIG. 8B , the light distribution pattern PA 3  is formed as a part of a low-beam light distribution pattern PL. 
     That is, the low-beam light distribution pattern PL is formed as a combined light distribution pattern of a basic light distribution pattern PLO formed by light irradiated from another vehicle lamp (not shown) and the light distribution pattern PA 3 . 
     The basic light distribution pattern PLO is a low-beam light distribution pattern of left light distribution. The basic light distribution pattern PLO is formed as a laterally elongated light distribution pattern widely spreading in the right and left direction around H-V and has right and left stepped cutoff lines CL 1 , CL 2  on the upper end edge thereof. The cutoff lines CL 1 , CL 2  horizontally extend to have a right and left step with the line V-V passing through H-V in the vertical direction as a boundary. The oncoming vehicle lane side portion on the right side of the line V-V is formed as the lower stage cutoff line CL 1 , and the own lane side portion on the left side of the line V-V is formed as the upper stage cutoff line CL 2  which is stepped upward from the lower stage cutoff line CL 1  via an inclination portion. 
     On the other hand, the light distribution pattern PA 3  is formed as a light distribution pattern in which the right region of the light distribution pattern PA 1  is cut away by nearly half in a state of being displaced to the leftward direction by about 1 to 3° (e.g., about 2°) with respect to the light distribution pattern PA 1 . That is, the maximum luminous intensity position of the light distribution pattern PA 3  is changed to the leftward direction with respect to the light distribution pattern PA 1 . 
     In the light distribution pattern PA 3 , a cutoff line CL 3  extending to be inclined slightly to the left side with respect to the vertical direction is formed at the position of about 1 to 2° (e.g., about 1.5°) on the left side of the line V-V. 
     When such a light distribution pattern PA 3  is formed in the low-beam light distribution pattern PL, it is possible to brightly irradiate the road surface and road shoulder and the like in front of the vehicle on the own lane side without giving a glare to a driver of a preceding vehicle  2 . 
     Also in the case of adopting the configuration of the present modification, it is possible to perform a fine light distribution control according to a vehicle travelling situation. 
     Meanwhile, in general, a pair of right and left vehicle lamps is attached to a vehicle. Therefore, for example, the light distribution pattern PA 3  may be formed by the left vehicle lamp, whereas a light distribution pattern bilaterally symmetrical with the light distribution pattern PA 3  with respect to the line V-V may be formed by the right vehicle lamp bilaterally symmetrical with the left vehicle lamp. Further, since the pair of right and left light distribution patterns can be selectively formed, it is possible to improve the visibility in front of a vehicle without giving a glare to a driver of a preceding vehicle  2  and a driver of an oncoming vehicle. 
     Next, a second modification of the first embodiment will be described. 
       FIGS. 9 and 10  are views similar to  FIGS. 3 and 5 , showing a main part of a vehicle lamp according to the present modification. Further, as shown in  FIGS. 9 and 10 , a basic configuration of the present modification is similar to that of the first embodiment, but the configurations of a metal holder  224  and a deflection lens  228  of a movable lens  220  are different from those of the first embodiment. 
     A basic configuration of the metal holder  224  of the present modification is also similar to that of the metal holder  24  of the first embodiment, but the present modification is different from the first embodiment in that, instead of the opening portion  24 Aa of the first embodiment, a slit  224 Aa is formed in a vertical surface portion  224 A of the metal holder  224 . 
     The slit  224 Aa is formed to extend in the upper and lower direction at the center portion of the vertical surface portion  224 A in the right and left direction and has a rectangular opening shape which is longitudinally elongated. 
     The slit  224 Aa is formed to have substantially the same height as the vertical width of the deflection lens  228  and is slightly longer in the lower side region than in the upper side region with respect to the optical axis Ax. The lateral width of the slit  224 Aa is set to about 1 to 3 mm (e.g., about 2 mm). 
     Further, a basic configuration of the deflection lens  228  of the present modification is similar to that of the deflection lens  28  of the first embodiment, but the shape of a lens body portion  228 A thereof is different from that of the first embodiment. 
     That is, the lens body portion  228 A of the present modification also has a front surface  228 Aa formed in a convex curved surface shape and a rear surface  228 Ab formed in a concave curved surface shape. At that time, the rear surface  228 Ab is configured by a curved surface substantially along a longitudinally elongated elliptical surface centered on a point positioned slightly above the optical axis Ax, and the front surface  228 Aa is configured by a curved surface in which a region on the lower side of the optical axis Ax bulges forward. 
     However, the lens body portion  228 A is formed so that its thickness is constant in the horizontal cross-section but its thickness gradually increases from an upper end edge to a lower end edge in the vertical cross-section. 
     In this manner, the deflection lens  228  deflects light reflected from the reflector  16  to the lower side by a certain angle. The downward deflection amount at that time is set to about 1 to 3° (e.g., about 2°). 
     In the present modification, when the movable lens  220  is in the light control position, most of light reflected from the reflector  16  is shielded by the metal holder  224 , and only the light passing through the slit  224 Aa is deflected downward by the deflection lens  28 , and then, reaches the projection lens  12 . 
     That is, the metal holder  224  functions as a shade for shielding a part of light emitted from the light source unit  14  and directed toward the movable lens  220 . 
       FIG. 11B  is a view perspectively showing a light distribution pattern PA 4  formed when the movable lens  220  is in the light control position, in the present modification. 
     Meanwhile,  FIG. 11A  is a view similar to  FIG. 6A  (that is, a view showing the light distribution pattern PA 1  formed when the movable lens  220  is in the retracted position). 
     As shown in  FIG. 11B , the light distribution pattern PA 4  is formed as a part of the low-beam light distribution pattern PL. 
     The low-beam light distribution pattern PL is formed as a combined light distribution pattern of the basic light distribution pattern PLO and the light distribution pattern PA 4 . 
     The second light distribution pattern PA 2  is formed as a light distribution pattern obtained by cutting both right and left side portions of the light distribution pattern PA 1  to form a longitudinally elongated band-like light distribution pattern and then displacing this light distribution pattern downward. At that time, the downward displacement amount of the light distribution pattern PA 2  with respect to the light distribution pattern PA 1  is about 1 to 3° (e.g., about 2°), and the lateral width of the light distribution pattern PA 2  is about 1 to 3° (e.g., about) 2°. That is, the maximum luminous intensity position of the light distribution pattern PA 4  is changed downward with respect to the light distribution pattern PA 1 . 
     When such a light distribution pattern PA 2  is formed in the low-beam light distribution pattern PL, a band of light linearly extending forward can be generated as a road surface drawing (that is, as a pattern of light intentionally formed on the road surface) on the road surface in front of the vehicle, thereby enhancing the calling attention function to the surroundings. 
     The light distribution pattern PA 4  is formed such that its upper end portion extends beyond the cutoff lines CL 1 , CL 2  to a position slightly above the H-V. However, since the luminous intensity of the peripheral edge portion of the light distribution pattern PA 1  is relatively low as described above and the luminous intensity of both upper and lower end portions of the light distribution pattern PA 4  is also relatively low, a harmful glare will not be given to a driver of a preceding vehicle or the like. 
     Also in the case of adopting the configuration of the present modification, it is possible to perform a fine light distribution control according to a vehicle travelling situation. 
     Hereinafter, a second embodiment will be described. 
       FIG. 12  is a side sectional view showing a vehicle lamp  1010  according to a second embodiment of the disclosure, and  FIG. 13  is a sectional view taken along the line II-II in  FIG. 12 . Meanwhile, in  FIGS. 12 and 13 , the direction indicated by X is the “front” of the lamp (also the “front” of the vehicle), the direction indicated by Y is the “right direction,” and the direction indicated by Z is the “upper direction.” The same is applied to other figures. 
     As shown in  FIGS. 12 and 13 , the vehicle lamp  1010  according to the present embodiment is a projector type lamp unit used in a state of being incorporated as a part of a headlamp. The vehicle lamp  1010  includes a projection lens  1012 , a light source unit  1014  disposed on the rear side of a rear focus point F of the projection lens  1012 , a reflector  1016  configured to reflect light emitted from the light source unit  1014  toward the projection lens  1012 , and a movable shade  1020  disposed between the light source unit  1014  and the projection lens  1012 . 
     The projection lens  1012  is a plano-convex aspheric lens having a front convex surface and a rear flat surface. The projection lens  1012  is configured to project a light source image formed on a rear focal plane that is a focal plane including the rear focus point F thereof, as an inverted image, on a virtual vertical screen in front of the lamp. The projection lens  1012  is supported by a lens holder  1032  at its outer peripheral flange portion. The lens holder  1032  is supported by a base member  1034  via a pair of right and left brackets  1036 . 
     The light source unit  1014  is configured so that light emitted from a laser diode  1014   a  as a light source is focused on a light emitting portion  1014   c  made of a phosphor by a condenser lens  1014   b  and is emitted as white diffused light from the light emitting portion  1014   c . The emission light from the light source unit  1014  is set such that the emitted light from the center position of the light emitting portion  1014   c  has the highest luminous intensity. The light emitting portion  1014   c  of the light source unit  1014  has a circular surface shape. The light source unit  1014  is supported on the base member  1034  in a state where the surface thereof is oriented in a direction inclined rearward with respect to the vertical upper side. 
     The reflector  1016  is supported by a pair of right and left brackets  1036  in a state of being disposed so as to cover the light source unit  1014  from the upper side. A reflecting surface  1016   a  of the reflector  1016  is configured by a spheroidal surface in which the light emission center of the light emitting portion  1014   c  of the light source unit  1014  is a first focus and the rear focus point F of the projection lens  1012  is a second focus. In this way, the reflector  1016  condenses light emitted from the light source unit  1014  in the vicinity of the rear focus point F of the projection lens  1012 . 
     The movable shade  1020  includes a shade holder  1022  pivotably supported by an actuator (e.g., solenoid, etc.)  1030  via a pivot pin  1026 , and a shade body  1024  supported by the shade holder  1022 . The pivot pin  1026  is disposed to extend in a right and left direction below the optical axis Ax and in front of the rear focus point F, and both ends of thereof are supported by the actuator  1030  and a support bracket (not shown). The actuator  1030  and the support bracket are supported on the base member  1034 . 
     The movable shade  1020  can adopt a light-shielding position (position indicated by a solid line in  FIG. 12 ) and a light-shielding release position (position indicated by a two-dot chain line in  FIG. 12 ) pivoted rearward by a predetermined angle from the light-shielding position by the driving of the actuator  1030 . The actuator  1030  is driven when an operation of a beam selector switch (not shown) is performed. 
     A deflection lens  1028  for changing the direction of light reflected from the reflector  1016  is attached to the movable shade  1020 . The deflection lens  1028  is fixed to the shade holder  1022  by the shade body  1024 . 
       FIG. 14  is a detailed view of a main part of  FIG. 12 , showing main components of the vehicle lamp  1010 . 
     Further,  FIGS. 15 and 16  are perspective views showing a state in which the main components of the vehicle lamp  1010  are disassembled into respective elements.  FIG. 15  is a perspective view showing the shade holder  1022 , the shade body  1024  and the deflection lens  1028  constituting the movable shade  1020  as seen diagonally from the upper front side, and  FIG. 16  is a perspective view showing these elements as seen diagonally from the upper rear side. 
     As shown in  FIGS. 14 to 16 , the shade holder  1022  is a die-cast molded product and has a pivot pin supporting portion  1022 A for supporting the pivot pin  1026 , an inclination portion  1022 B extending obliquely upward and rearward from the pivot pin supporting portion  1022 A, an upright wall portion  1022 C extending vertically upward from a rear end edge of the inclination portion  1022 B, and a counterweight portion  1022 D extending downward from the pivot pin supporting portion  1022 A. The inclination portion  1022 B is extended to both right and left sides and curved forward from the position below the optical axis Ax, in a plan view. Further, the upright wall portion  1022 C and the counterweight portion  1022 D are formed to have a lateral width narrower than the pivot pin supporting portion  1022 A and the inclination portion  1022 B. 
     An opening portion  1022 Ba penetrating the inclination portion  1022 B in the front and rear direction is formed in the inclination portion  1022 B. Further, an opening portion  1022 Ca penetrating the upright wall portion  1022 C in the front and rear direction is also formed in the upright wall portion  1022 C. The opening portion  1022 Ba has a substantially rectangular opening shape which is laterally elongated. On the other hand, the opening portion  1022 Ca has a substantially rectangular opening shape slightly laterally elongated and is formed to surround the optical axis Ax. 
     A horizontal portion  1022 C 1  extending forward along a horizontal plane is formed at a lower end portion of the upright wall portion  1022 C. A protrusion  1022 C 1   a  protruding downward so as to face the opening portion  1022 Ba is formed at the center portion in the right and left direction on the lower surface of the horizontal portion  1022 C 1 . 
     A rectangular concave portion  1022 Cb spreading from the opening portion  1022 Ca toward the right and left sides is formed on the rear surface of the upright wall portion  1022 C. Beads  1022 Cb 1  extending in the front and rear direction are formed on the right and left wall surfaces and upper surface of the rectangular concave portion  1022 Cb. 
     An upper end surface of the upright wall portion  1022 C extends along the horizontal plane. A protrusion  1022 Cc is formed at the central portion of the upper end surface in the right and left direction, and protrusions  1022 Cd are formed at portions near both ends thereof in the right and left direction. 
     A columnar pin  1022 Ce protruding rearward is formed at a portion in the vicinity below the opening portion  1022 Ca in the center portion of the rear surface of the upright wall portion  1022 C in the right and left direction. 
     The shade body  1024  is a member formed by processing a metal plate having a spring property and has a bilaterally-symmetrical shape with respect to the optical axis Ax. 
     The shade body  1024  has a vertical surface portion  1024 A extending along the vertical plane orthogonal to the optical axis Ax, an upper surface portion  1024 B extending forward from an upper end edge of the vertical surface portion  1024 A, leaf spring portions  1024 C extending downward from a rear end edge of the upper surface portion  1024 B on both right and left sides of the vertical surface portion  1024 A, and a lower surface portion  1024 D extending forward from a lower end edge of the vertical surface portion  1024 A. 
     The vertical surface portion  1024 A is formed to have substantially the same vertical width as the upright wall portion  1022 C of the shade holder  1022  and formed to have substantially the same lateral width as the opening portion  1022 Ca of the upright wall portion  1022 C. 
     A longitudinally elongated rectangular slit  1024 Aa extending in the upper and lower direction is formed at the center portion of the vertical surface portion  1024 A in the right and left direction. The slit  1024 Aa is formed to have substantially the same height as the vertical width of the deflection lens  1028  and is slightly longer in the lower side region than in the upper side region with respect to the optical axis Ax. Further, the lateral width of the slit  1024 Aa is set to about 1 to 3 mm (e.g., about 2 mm). 
     An elongated hole  1024 Ab slightly longer in the upper and lower direction is formed in the vicinity below the slit  1024 Aa of the vertical surface portion  1024 A. 
     The upper surface portion  1024 B extends along the horizontal plane. A rectangular notch portion  1024 Ba is formed at the center portion of the upper surface portion in the right and left direction, and rectangular opening portions  1024 Bb are formed at portions near both ends thereof in the right and left direction. 
     Each leaf spring portion  1024 C is extended downward and curved rearward. A semi-cylindrical portion  1024 Ca, which has a semi-cylindrical shape extending in the right and left direction and protrudes forward, is formed at a portion in the vicinity of a lower end of each leaf spring portion  24 C. 
     The lower surface portion  1024 D extends along the horizontal plane, and a rectangular opening portion  1024 Da is formed at a portion in the vicinity of a front end thereof. 
     The deflection lens  1028  is a lens made of resin, and has a lens body portion  1028 A and a pair of flange portions  1028 B extending to both right and left sides from the lens body portion  1028 A. The deflection lens  1028  has a bilaterally-symmetrical shape with respect to the optical axis Ax. 
     The pair of right and left flange portions  1028 B is formed to extend in a flat plate along the vertical plane orthogonal to the optical axis Ax. The lens body portion  1028 A is formed to protrude forward from both flange portions  1028 B. 
     The lens body portion  1028 A has a front surface  1028 Aa formed in a convex curved surface shape and a rear surface  1028 Ab formed in a concave curved surface shape. The rear surface  1028 Ab is configured by a curved surface substantially along a longitudinally elongated elliptical surface centered on a point positioned slightly above the optical axis Ax. The front surface  1028 Aa is configured by a curved surface in which a region on the lower side of the optical axis Ax largely bulges forward. 
     That is, the lens body portion  1028 A is formed so that its thickness is constant in the horizontal cross-section but its thickness gradually increases from an upper end edge to a lower end edge in the vertical cross-section. 
     In this manner, the deflection lens  1028  is adapted to deflect light reflected from the reflector  1016  to the lower side by a certain angle. The downward deflection amount at that time is set to about 1 to 3° (e.g., about 2°). 
     The shade body  1024  and the deflection lens  1028  are attached to the upright wall portion  1022 C of the shade holder  1022 . This attachment is carried out as follows. 
     That is, first, the deflection lens  1028  is inserted into the opening portion  1022 Ca of the upright wall portion  1022 C of the shade holder  1022  from the rear side, and both flange portions  1028 B are abutted against the rectangular concave portion  1022 Cb. In this manner, the lens body portion  1028 A protrudes forward from the opening portion  1022 Ca of the upright wall portion  1022 C. 
     Subsequently, the notch portion  1024 Ba formed in the upper surface portion  1024 B of the shade body  1024  is engaged with the protrusion  1022 Cc formed in the upper end surface of the upright wall portion  1022 C to perform the positioning in the right and direction, and the pair of right and left opening portions  1024 Bb formed in the upper surface portion  1024 B is engaged with the pair of right and left protrusions  1022 Cd formed in the upper end surface of the upright wall portion  1022 C. 
     Subsequently, the semi-cylindrical portions  1024 Ca of the pair of right and left leaf spring portion  1024 C are pressed against the flange portions  1028 B of the deflection lens  1028 , thereby elastically deforming each of the leaf spring portions  1024 C. 
     Then, the opening portion  1024 Da formed in the lower surface portion  1024 D of the shade body  1024  is engaged with the protrusion  1022 C 1   a  formed in the lower surface of the horizontal portion  1022 C 1  of the upright wall portion  1022 C to fix the shade body  1024  to the shade holder  1022 . In this way, the deflection lens  1028  is positioned by being clamped by the shade body  1024  and the shade holder  1022  from both front and rear sides. 
     When the movable shade  1020  is in the light-shielding position, the vertical surface portion  1024 A of the shade body  1024  thereof is arranged to extend along the vertical plane orthogonal to the optical axis Ax and, at this time, the center position of the slit  1024 Aa is positioned slightly below the rear focus point F of the projection lens  1012 . 
     Further, when the movable shade  1020  is in the light-shielding position, most of light reflected from the reflector  1016  is shielded by the shade body  1024 , and only the light passing through the slit  1024 Aa is deflected downward by the deflection lens  1028  and then reaches the projection lens  1012 . On the other hand, when the movable shade  1020  is in the light-shielding release position, light reflected from the reflector  1016  is not shielded by the shade body  1024  and reaches the projection lens  1012 . 
       FIGS. 17A and 17B  are views perspectively showing a light distribution pattern formed on a virtual vertical screen disposed at a position of 25 m in front of the lamp by light irradiated forward from the vehicle lamp  1010 . 
     A light distribution pattern PA 1 A shown in  FIG. 17A  is a first light distribution pattern formed as a part of a high-beam light distribution pattern PHA when the movable shade  1020  is in the light-shielding release position, and a light distribution pattern PA 2 A shown in  FIG. 17B  is a second light distribution pattern formed as a part of a low-beam light distribution pattern PLA when the movable shade  1020  is in the light-shielding position. 
     The high-beam light distribution pattern PHA shown in  FIG. 17A  is formed as a combined light distribution pattern of a basic light distribution pattern PH 0 A formed by light irradiated from another vehicle lamp (not shown) and the first light distribution pattern PA 1 A. 
     The basic light distribution pattern PH 0 A is formed as a laterally elongated light distribution pattern widely spreading in the right and left direction around H-V (vanishing point in the front direction of the lamp). 
     On the other hand, the first light distribution pattern PA 1 A is formed as a spot-like light distribution pattern which is slightly laterally elongated around the H-V, thereby forming a high luminous intensity area at the center of the high-beam light distribution pattern PHA. The luminous intensity of the center portion of the first light distribution pattern PA 1 A is considerably high, but the luminous intensity of the peripheral portion thereof is relatively low. 
     The low-beam light distribution pattern PLA shown in  FIG. 17B  is formed as a combined light distribution pattern of the basic light distribution pattern PL 0 A formed by light irradiated from another vehicle lamp (not shown) and the second light distribution pattern PA 2 A. 
     The basic light distribution pattern PL 0 A is a low-beam light distribution pattern of left light distribution. The basic light distribution pattern PL 0 A is formed as a laterally elongated light distribution pattern widely spreading in the right and left direction around H-V and has right and left stepped cutoff lines CL 1 , CL 2  on the upper end edge thereof. The cutoff lines CL 1 , CL 2  horizontally extend to have a right and left step with the line V-V passing through the H-V in the vertical direction as a boundary. The oncoming vehicle lane side portion on the right side of the line V-V is formed as the lower stage cutoff line CL 1 , and the own lane side portion on the left side of the line V-V is formed as the upper stage cutoff line CL 2  which is stepped upward from the lower stage cutoff line CL 1  via an inclination portion. 
     On the other hand, the second light distribution pattern PA 2 A is formed as a light distribution pattern obtained by cutting both right and left side portions of the first light distribution pattern PA 1 A to form a longitudinally elongated band-like light distribution pattern and then displacing this light distribution pattern downward. At that time, the downward displacement amount of the second light distribution pattern PA 2 A with respect to the first light distribution pattern PA 1 A is about 1 to 3° (e.g., about 2°), and the lateral width of the second light distribution pattern PA 2  is about 1 to 3° (e.g., about 2°). 
     When such a second light distribution pattern PA 2 A is formed in the low-beam light distribution pattern PLA, a band of light linearly extending forward can be generated as a road surface drawing on the road surface in front of the vehicle, thereby enhancing the calling attention function to the surroundings. 
     The second light distribution pattern PA 2 A is formed such that its upper end portion extends beyond the cutoff lines CL 1 , CL 2  to a position slightly above the H-V. However, since the luminous intensity of the peripheral edge portion of the first light distribution pattern PA 1 A is relatively low as described above and the luminous intensity of both upper and lower end portions of the second light distribution pattern PA 2 A is also relatively low, a harmful glare will not be given to a driver of a preceding vehicle or the like. 
     Next, an operational effect of the second embodiment will be described. 
     The vehicle lamp  1010  according to the present embodiment is a projector type lamp unit and configured to form the first light distribution pattern PA 1 A. However, the second light distribution pattern PA 2 A having a lateral width smaller than that of the first light distribution pattern PA 1 A can be formed by the light-shielding action of the movable shade  1020  serving as a first light control unit disposed between the projection lens  1012  and the light source unit  1014 . Further, when the light-shielding is performed, the formation position of the second light distribution pattern PA 2 A can be displaced downward by the deflection lens  1028  serving as a second light control unit. Therefore, the following operational effects can be obtained. 
     That is, since the second light distribution pattern PA 2 A having a lateral width smaller than that of the first light distribution pattern PA 1 A is formed by the light-shielding action of the movable shade  1020  and the formation position thereof is displaced downward by the deflection lens  1028 , it is possible to efficiently perform the light irradiation on the road surface in front of the vehicle, as compared with the light distribution pattern in which only a part of the first light distribution pattern PA 1 A is cut off. 
     In this manner, according to the projector type vehicle lamp  1010  of the present embodiment, the light distribution patterns PA 1 A, PA 2 A having different shapes can be formed, and the light irradiation on the road surface in front of the vehicle can be efficiently performed. 
     Further, since the formation position of the second light distribution pattern PA 2 A is displaced downward as described above, it is possible to easily perform the road surface drawing by the light irradiation on the road surface in front of the vehicle. Further, it is possible to reduce the possibility of giving a glare to a driver of a preceding vehicle, a driver of an oncoming vehicle, or a crossing pedestrian or the like. 
     Moreover, in the present embodiment, a spot-like light distribution pattern is formed as the first light distribution pattern PA 1 A. Therefore, the distant visibility can be improved by the first light distribution pattern PA 1 A, and the road surface in front of the vehicle can be locally brightly irradiated by the second light distribution pattern PA 2 A. 
     In the present embodiment, a longitudinally elongated band-like light distribution pattern in which both right and left side portions of the first light distribution pattern PA 1 A are cut off is formed as the second light distribution pattern PA 2 A. Therefore, a band of light linearly extending forward can be formed as the road surface drawing on the road surface in front of the vehicle by the second light distribution pattern PA 2 A, thereby enhancing the calling attention function to the surroundings. 
     Further, in the present embodiment, the first light control unit is configured by the movable shade  1020  configured to be able to adopt the light-shielding position and the light-shielding release position. Therefore, it is possible to selectively form the first light distribution pattern PA 1 A and the second light distribution pattern PA 2 A with a simple configuration. 
     Furthermore, in the present embodiment, the second light control unit is configured by the deflection lens  1028  fixed to the movable shade  1020 . Therefore, the formation position of the second light distribution pattern PA 2 A can be displaced downward with a simple configuration. 
     In the second embodiment, the movable shade  1020  is configured to be able to adopt the light control position and the retracted position by the pivotal movement in the front and rear direction. However, the pivotal movement in the right and left direction may be adopted, or linear reciprocating movement in the upper and lower direction or in the right and left direction may be adopted, instead of the pivotal movement. 
     In the second embodiment, the vehicle lamp  1010  is configured to form the low-beam light distribution pattern PL of left light distribution. However, also when the vehicle lamp  1010  is configured to form a low-beam light distribution pattern of right light distribution or is configured to form a light distribution pattern having only a horizontal cutoff line at its upper end portion, the same operational effects can be obtained by adopting the same configurations as those of the second embodiment. 
     Next, modifications of the second embodiment will be described. 
     First, a first modification of the second embodiment will be described. 
       FIG. 18  is a view similar to  FIG. 14 , showing a main part of a vehicle lamp according to the present modification. 
     As shown in  FIG. 18 , a basic configuration of the present modification is similar to that of the second embodiment, but the configurations of a shade body  1124  and a deflection lens  1128  of a movable shade  1120  are different from those of the second embodiment. 
       FIG. 19A  is a perspective view showing the shade body  1124  of the present modification as a single item. 
     As shown in  FIGS. 18 and 19A , a basic configuration of the shade body  1124  of the present modification is also similar to that of the shade body  1024  of the second embodiment, and a slit  1124 Aa extending in the upper and lower direction is formed at the center portion of a vertical surface portion  1124 A thereof in the right and left direction. The shape of the slit  1124 Aa is different from that of the second embodiment. 
     That is, in the shade body  1024  of the second embodiment, the slit  1024 Aa is formed in a longitudinally elongated rectangular shape with a constant lateral width. However, in the shade body  1124  of the present modification, a lower region  1124 Aa 1  of the slit  1124 Aa is formed wider than the slit  1024 Aa of the second embodiment. 
     Specifically, the slit  1124 Aa of the shade body  1124  is formed to have substantially the same height as the vertical width of the deflection lens  1128  and is slightly longer in the lower side region than in the upper side region with respect to the optical axis Ax. Further, the lateral width of the slit  1124 Aa is set to about 1 to 3 mm (e.g., about 2 mm) in a general region other than the lower region  1124 Aa 1 , but is set to about 4 to 6 mm (e.g., about 5 mm) in the lower region  1124 Aa 1 . The position of an upper end edge of the lower region  1124 Aa 1  is set to a position slightly below the optical axis Ax. 
     Further, as shown in  FIG. 18 , a basic configuration of the deflection lens  1128  of the present modification is similar to that of the deflection lens  1028  of the second embodiment, but the vertical cross-sectional shape of a lens body portion  1128 A thereof is different from that of the second embodiment. 
     That is, the deflection lens  1128  of the present modification is also configured to deflect light reflected from the reflector  1016  to the lower side by a certain angle, but the downward deflection amount at that time is set to a value slightly smaller than that of the above embodiment. Specifically, the downward deflection amount is set to about 1 to 2° (e.g., about 1.5°). 
     In order to realize this, the lens body portion  1128 A has a front surface  1128 Aa formed in a convex curved surface shape, and a region below the optical axis Ax is configured by a curved surface greatly bulging forward. However, the degree of bulging is smaller than that of the lens body portion  1028 A of the second embodiment. 
       FIG. 20A  is a view perspectively showing a second light distribution pattern PA 3 A formed on the virtual vertical screen when the movable shade  1120  is in the light-shielding position. 
     The second light distribution pattern PA 3 A is formed such that its upper region PA 3   a  bulges to both right and left sides at a position displaced slightly upward from the second light distribution pattern PA 2 A of the second embodiment. The downward displacement amount of the second light distribution pattern PA 3 A with respect to the first light distribution pattern PA 1 A shown in  FIG. 17A  is about 1 to 2° (e.g., about 1.5°). The lateral width of the second light distribution pattern PA 3 A is about 1 to 3° (e.g., about 2°) in a region other than the upper region PA 3   a , and is about 4 to 6° (e.g., about 5°) in the upper region PA 3   a.    
     When such a second light distribution pattern PA 3 A is formed in the low-beam light distribution pattern PLA, similar to the second light distribution pattern PA 2 A of the second embodiment, a band of light linearly extending forward can be generated as a road surface drawing on the road surface in front of the vehicle, thereby enhancing the calling attention function to the surroundings. 
     Moreover, the second light distribution pattern PA 3 A is displaced slightly upward from the second light distribution pattern PA 2 A of the second embodiment and the upper region PA 3   a  thereof is formed to protrude to both right and left sides. Therefore, the distant visibility can be improved as compared with the case of the second embodiment. 
     For example, as shown in  FIG. 17A , when there is a pedestrian  1004  crossing the road surface in front of the vehicle behind an oncoming vehicle  1002 , it is difficult to find the pedestrian  1004  due to light irradiated from a headlamp of the oncoming vehicle  1002 . However, since the upper region PA 3   a  of the second light distribution pattern PA 3 A is irradiated to the pedestrian  4 , it is easy to find the pedestrian  1004 . Further, since light is irradiated to the body of the pedestrian  1004 , the pedestrian  1004  can easily recognize that a vehicle is approaching. 
     Next, a second modification of the second embodiment will be described. 
       FIG. 19B  is a perspective view showing a shade body  1224  of the present modification as a single item. 
     As shown in  FIG. 19B , a basic configuration of the present modification is similar to that of the first modification of the second embodiment. However, in the shade body  1224  of the present modification, a lower region  1224 Aa 1  of a slit  1224 Aa formed at the center of a vertical surface portion  1224 A in the right and left direction is formed wider than the lower region  1124 Aa 1  of the slit  1124 Aa in the shade body  1124  of the first modification of the second embodiment. Specifically, the lateral width of the lower region  1224 Aa 1  is set to about 7 to 9 mm (e.g., about 8 mm). 
     In this way, as shown in  FIG. 20B , a second light distribution pattern PA 4 A formed on the virtual vertical screen when a movable shade (not shown) is in the light-shielding position is formed such that its upper region PA 4   a  bulges further to both right and left sides than the upper region PA 3   a  of the second light distribution pattern PA 3 A in the first modification of the second embodiment. The lateral width of the upper region PA 4   a  of the second light distribution pattern PA 4 A is about 7 to 9° (e.g., about 8°). 
     When such a second light distribution pattern PA 4 A is formed in the low-beam light distribution pattern PLA, the distant visibility can be further improved as compared with the case of the first modification of the second embodiment. 
     Next, a third modification of the second embodiment will be described. 
       FIG. 21  is a view similar to the main part of  FIG. 13 , showing a movable shade  320  of the present modification. 
     As shown in  FIG. 21 , a basic configuration of the present modification is similar to that of the second embodiment, but a shade holder  322  of the movable shade  320  of the present modification has the function of the shade holder  1022  and the function of the shade body  1024  in the second embodiment. 
     That is, in the movable shade  320 , a slit  322 Ca is formed in an upright wall portion  322 C of the die-cast shade holder  322 . 
     The slit  322 Ca is formed in the same opening shape and at the same position as the slit  1024 Aa of the shade body  1024  of the second embodiment. 
     In the movable shade  320  of the present modification, a rear surface of the deflection lens  1028  is fixed to a front surface of the upright wall portion  322 C of the shade holder  322  by adhesion or the like. 
     A protrusion  322 Cb for positioning the deflection lens  1028  is formed on an outer peripheral edge portion of the upright wall portion  322 C so as to protrude toward the front. Further, both right and left regions of the slit  322 Ca on the rear surface of the upright wall portion  322 C are formed as inclination surfaces  322 Cc inclined to the front side toward the slit  322 Ca. In this way, the thickness of the upright wall portion  322 C at the position of the side end edge facing the slit  322 Ca is reduced to the same thickness as the plate thickness of the shade body  24  of the above embodiment, thereby preventing light reflected from a reflector (not shown) from being inadvertently shielded. 
     Also in the case of adopting the configuration of the present modification, the same operational effects as those of the second embodiment can be obtained. 
     Further, it is possible to reduce the number of parts by adopting the configuration of the present modification. 
     Meanwhile, the numerical values described as the specifications in the above embodiments and modifications thereof are merely examples, and it goes without saying that these numerical values may be set to different values as appropriate. 
     Further, the disclosure is not limited to the configurations described in the above embodiments and modifications thereof, and it is possible to adopt a configuration added with various other modifications. 
     While the disclosure includes a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised. Accordingly, the scope of the invention should be limited only by the attached claims.