Patent Publication Number: US-10317033-B2

Title: Lamp for vehicle and method for controlling the same

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     Pursuant to 35 U.S.C. § 119(a), this application claims an earlier filing date of and right of priority to Korean Application No. 10-2016-0180425, filed on Dec. 27, 2016, the contents of which are incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     This present disclosure relates to a vehicle lamp and a method of controlling the same. 
     BACKGROUND 
     A vehicle is an apparatus configured to move a user in the user&#39;s desired direction. A representative example of a vehicle may be an automobile. 
     A vehicle may be provided with various types of lamps. In general, the vehicle includes various vehicle lamps to provide illumination of object near the vehicle, and to notify a driving state of the vehicle to other vehicles or pedestrians. 
     Example of the various types of lamp include a head lamp outputting light to a front side to facilitate outward visibility of a driver, a brake lamp for indicating application of a brake, and turn indicator lamps for indicating direction of a turn. 
     Various types of sensors and electronic devices may be provided in the vehicle to enhance user convenience. For example, an Advanced Driver Assistance System (ADAS) is being actively developed for enhancing the user&#39;s driving convenience and safety. In addition, autonomous vehicles are being actively developed. As part of this effort, lamps for vehicle configured to output light in various ways reflecting as part of the ADAS are being actively developed. 
     SUMMARY 
     In one aspect, a vehicle lamp includes: a light source unit including at least one light source configured to generate light; a shield portion located closer to a front of the vehicle lamp as compared to the light source unit, and configured to receive the light generated by the light source and to transmit at least a portion of the received light to form a beam pattern, the shield portion including: a first shield configured to form at least part of the beam pattern; and a second shield having a light transmittance that is configured to be controlled to modify the beam pattern; a drive unit configured to drive the shield portion; and at least one processor configured to control at least one of the shield portion or the drive unit to modify the beam pattern. 
     Implementations may include one or more of the following features. For example, the first shield is provided at a first side of a rotatable body, and the second shield is provided at a second side opposite to the first side. 
     In some implementations, the second shield includes a plurality of pixels having respective light transmittances that are configured to be controlled, wherein each of the plurality of pixels is configured to allow independent control of respective light transmittances. In some implementations, the plurality of pixels are arranged on the second shield in a matrix form. In some implementations, each of the plurality of pixels is configured to provide a variably controlled amount of light transmittance therethrough. In some implementations, for each pixel, a light transmittance of a first sub portion of the pixel is controllable to be different from a second sub portion of the pixel. 
     In some implementations, the light source unit includes: a first light source configured to output a first light in an upward direction; a second light source configured to output a second light in a downward direction; and a reflector configured to reflect the first light and the second light toward the front of the vehicle lamp. 
     In some implementations, the first light is reflected by the reflector and propagates through the shield portion to form a low-beam pattern, and the second light is reflected by the reflector and propagates through the shield portion to form a high-beam pattern. 
     In some implementations, the at least one processor is configured to: determine that a low-beam output request is received; and based on a determination that a low-beam output request is received, control the drive unit to position the first shield at a lower side with respect to a rotatable body, and position the second shield at an upper side with respect to the rotatable body. 
     In some implementations, the second shield includes a plurality of pixels having respective light transmittances that are configured to be controlled, wherein each of the plurality of pixels is configured to allow independent control of respective light transmittances, and the at least one processor is configured to: control a light transmittance of at least a portion of the plurality of pixels of the second shield to form a low-beam pattern. 
     In some implementations, the at least one processor is configured to: turn off the second light source in a state in which the vehicle lamp outputs a low-beam pattern. 
     In some implementations, the at least one processor is configured to: determine that a high-beam output request is received; and based on a determination that a high-beam output request is received, control the drive unit to position the first shield at an upper side with respect to a rotatable body, and position the second shield at a lower side with respect to the rotatable body. 
     In some implementations, the second shield includes a plurality of pixels having respective light transmittances that are configured to be controlled, wherein each of the plurality of pixels is configured to allow independent control of respective light transmittances, and the at least one processor is configured to: control a light transmittance of at least a portion of the plurality of pixels of the second shield to form a high-beam pattern. 
     In some implementations, the shield portion is configured to provide independent rotation of the first shield and the second shield with respect to a rotatable body. In some implementations, the at least one processor is configured to: determine that a low-beam output request is received; and based on a determination that a low-beam output request is received, control the drive unit to position the first shield and the second shield at an upper side with respect to the rotatable body and orient the first shield and the second shield in an upward direction, with the first shield and the second shield overlapping along a path of the light generated by the light source, to form a low-beam pattern. 
     In some implementations, wherein in a state in which the low-beam pattern is generated: the first shield forms a cut-off line in the beam pattern, and the second shield is controlled to variably change the light transmittance therethrough that forms at least a portion of the beam pattern. 
     In another aspect, a vehicle includes: a plurality of wheels; a power source configured to drive at least one of the plurality of wheels; and the vehicle lamp. 
     In some scenarios, according to some implementations of the present disclosure, one or more of the following effects may be achieved. 
     First, according to the present disclosure, it may be possible to output various beam patterns using a shield including a plurality of pixels and configured to independently control light transmittance for each pixel. 
     Second, according to the present disclosure, it may be possible to form a more detailed beam pattern using a shield configured to control light transmittance and a fixed shield together. 
     Third, according to the present disclosure, it may be possible to provide an optimized vehicle lamp configured to enhance low-beam patterned light and high-beam patterned light using a rotatable second reflector and/or an auxiliary light source. 
     The details of one or more implementations are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims. The description and specific examples below are given by way of illustration only, and various changes and modifications will be apparent. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram illustrating an example of an exterior of a vehicle; 
         FIG. 2  is a diagram illustrating an example of a vehicle at various angles; 
         FIGS. 3 and 4  are views illustrating an interior portion of an example of a vehicle; 
         FIGS. 5 and 6  are reference views illustrating examples of objects that are relevant to driving; 
         FIG. 7  is a block diagram illustrating subsystems of an example of a vehicle; 
         FIG. 8  is an exploded view illustrating an example of a vehicle lamp according to some implementations disclosed herein; 
         FIG. 9A  is a front view illustrating the vehicle lamp illustrated in  FIG. 8 ; 
         FIGS. 9B-9C  are side views illustrating the vehicle lamp illustrated in  FIG. 8 ; 
         FIG. 10A  is a front view illustrating the vehicle lamp illustrated in  FIG. 8 ; 
         FIGS. 10B-10D  are cross-sectional views illustrating various examples of a light source unit applicable to the present disclosure; 
         FIGS. 11-16B  are diagrams illustrating various methods of controlling the vehicle lamp illustrated in  FIG. 8 ; 
         FIG. 17  is an exploded view illustrating another example of a vehicle lamp according to some implementations disclosed herein; 
         FIGS. 18A-19B  are diagrams illustrating the high-beam and low-beam operations of the vehicle lamp illustrated in  FIG. 17 ; 
         FIGS. 20A-21B  are diagrams illustrating various implementations of the vehicle lamp illustrated in  FIG. 17 ; 
         FIG. 22  is an exploded view illustrating an example of a vehicle lamp according to some implementations disclosed herein; 
         FIGS. 23A-24B  are diagrams illustrating the high-beam and low-beam operations of the vehicle lamp illustrated in  FIG. 22 ; 
         FIGS. 25A-25B  are diagrams illustrating another implementation of the vehicle lamp illustrated in  FIG. 22 ; 
         FIGS. 26A-27B  are diagrams illustrating yet another implementation of the vehicle lamp illustrated in  FIG. 22 ; and 
         FIG. 28  is a diagram illustrating an example of an adaptive illumination provided by the vehicle lamp according to some implementations disclosed herein. 
     
    
    
     DETAILED DESCRIPTION 
     A vehicle lamp is described herein that adaptively provided various beam patterns for various driving situations. 
     In some implementations, the vehicle lamp may output a beam pattern in an optimized manner. 
     In some implementations, the vehicle lamp may output an optimized low-beam pattern during a low-beam operation, and output an optimized high-beam pattern during a high-beam operation. 
     In some implementations, the vehicle lamp may adaptively control a beam pattern in a region around a cut-off line. 
     In some implementations, the vehicle lamp may enhance a low-beam patterned light or a high-beam patterned light in an optimized manner using a rotatable second reflector and/or an auxiliary light source. 
     In some implementations, various beam patterns may be output using a shield including a plurality of pixels and configured to independently control light transmittance of each pixel. 
     In some implementations, a more detailed beam pattern may be formed, or the beam pattern may be more precisely controlled by arranging a shield configured to control light transmittance and a fixed shield such that the two shields overlap along a path of light generated by a light source unit. 
     In accordance with an implementation of the present disclosure, a vehicle lamp may include at least one light source, a first reflector configured to reflect light generated by the light source, a shield configured to block part of light reflected from the first reflector to form a beam pattern, a lens configured to project light that has passes through the shield to an outside thereof, and a second reflector configured to reflect light reflected from the first reflector back to the first reflector or reflect light generated by the light source to be incident on the lens, wherein the second reflector is formed to be rotatable with respect to one axis and disposed at a different position when outputting a low-beam and when outputting a high-beam, respectively. 
     A vehicle according to an implementation of the present disclosure may include, for example, a car or a motorcycles or any suitable motorized vehicle. Hereinafter, the vehicle will be described based on a car. 
     The vehicle according to the implementation of the present disclosure may be powered by any suitable power source, and may be an internal combustion engine car having an engine as a power source, a hybrid vehicle having an engine and an electric motor as power sources, or an electric vehicle having an electric motor as a power source. 
     In the following description, a left side of a vehicle refers to a left side in a driving direction of the vehicle, and a right side of the vehicle refers to a right side in the driving direction. 
       FIG. 1  illustrates an example of an exterior of a vehicle;  FIG. 2  illustrates an example of a vehicle at various angles; and  FIGS. 3 and 4  illustrate an interior portion of an example of a vehicle. 
       FIGS. 5 and 6  illustrate examples of objects that are relevant to driving; and  FIG. 7  illustrate subsystems of an example of a vehicle. 
     As illustrated in  FIGS. 1 to 7 , a vehicle  100  may include wheels turning by a driving force, and a steering apparatus  510  for adjusting a driving (ongoing, moving) direction of the vehicle  100 . 
     The vehicle  100  may be an autonomous vehicle. 
     The vehicle  100  may be switched into an autonomous mode or a manual mode based on a user input. 
     For example, the vehicle may be converted from the manual mode into the autonomous mode or from the autonomous mode into the manual mode based on a user input received through a user interface apparatus  200 . 
     The vehicle  100  may be switched into the autonomous mode or the manual mode based on driving environment information. The driving environment information may be generated based on object information provided by an object detecting apparatus  300 . 
     For example, the vehicle  100  may be switched from the manual mode into the autonomous mode or from the autonomous module into the manual mode based on driving environment information generated in the object detecting apparatus  300 . 
     In an example, the vehicle  100  may be switched from the manual mode into the autonomous mode or from the autonomous module into the manual mode based on driving environment information received through a communication apparatus  400 . 
     The vehicle  100  may be switched from the manual mode into the autonomous mode or from the autonomous module into the manual mode based on information, data or signal provided from an external device. 
     When the vehicle  100  is driven in the autonomous mode, the autonomous vehicle  100  may be driven based on an operation system  700 . 
     For example, the autonomous vehicle  100  may be driven based on information, data or signal generated in a driving system  710 , a parking exit system  740  and a parking system  750 . 
     When the vehicle  100  is driven in the manual mode, the autonomous vehicle  100  may receive a user input for driving through a driving control apparatus  500 . The vehicle  100  may be driven based on the user input received through the driving control apparatus  500 . 
     An overall length refers to a length from a front end to a rear end of the vehicle  100 , a width refers to a width of the vehicle  100 , and a height refers to a length from a bottom of a wheel to a roof. In the following description, an overall-length direction L may refer to a direction which is a criterion for measuring the overall length of the vehicle  100 , a width direction W may refer to a direction that is a criterion for measuring a width of the vehicle  100 , and a height direction H may refer to a direction that is a criterion for measuring a height of the vehicle  100 . 
     As illustrated in  FIG. 7 , the vehicle  100  may include a user interface apparatus  200 , an object detecting apparatus  300 , a communication apparatus  400 , a driving control apparatus  500 , a vehicle operating apparatus  600 , an operation system  700 , a navigation system  770 , a sensing unit  120 , an interface unit  130 , a memory  140 , at least one processor such as controller  170  and a power supply unit  190 . 
     In some implementations, the vehicle  100  may include more components in addition to components to be explained in this specification or may not include some of those components to be explained in this specification. 
     The user interface apparatus  200  is an apparatus for communication between the vehicle  100  and a user. The user interface apparatus  200  may receive a user input and provide information generated in the vehicle  100  to the user. The vehicle  200  may implement user interfaces (UIs) or user experiences (UXs) through the user interface apparatus  200 . 
     The user interface apparatus  200  may include an input unit  210 , an internal camera  220 , a biometric sensing unit  230 , an output unit  250  and at least one processor, such as processor  270 . 
     In some implementations, the user interface apparatus  200  may include more components in addition to components to be explained in this specification or may not include some of those components to be explained in this specification. 
     The input unit  200  may allow the user to input information. Data collected in the input unit  120  may be analyzed by the processor  270  and processed as a user&#39;s control command. 
     The input unit  210  may be disposed within the vehicle. For example, the input unit  200  may be disposed on one area of a steering wheel, one area of an instrument panel, one area of a seat, one area of each pillar, one area of a door, one area of a center console, one area of a headlining, one area of a sun visor, one area of a wind shield, one area of a window or the like. 
     The input unit  210  may include a voice input module  211 , a gesture input module  212 , a touch input module  213 , and a mechanical input module  214 . 
     The audio input module  211  may convert a user&#39;s voice input into an electric signal. The converted electric signal may be provided to the processor  270  or the controller  170 . 
     The voice input module  211  may include at least one microphone. 
     The gesture input module  212  may convert a user&#39;s gesture input into an electric signal. The converted electric signal may be provided to the processor  270  or the controller  170 . 
     The gesture input module  212  may include at least one of an infrared sensor and an image sensor for detecting the user&#39;s gesture input. 
     In some implementations, the gesture input module  212  may detect a user&#39;s three-dimensional (3D) gesture input. To this end, the gesture input module  212  may include a light emitting diode outputting a plurality of infrared rays or a plurality of image sensors. 
     The gesture input module  212  may detect the user&#39;s 3D gesture input by a time of flight (TOF) method, a structured light method or a disparity method. 
     The touch input module  213  may convert the user&#39;s touch input into an electric signal. The converted electric signal may be provided to the processor  270  or the controller  170 . 
     The touch input module  213  may include a touch sensor for detecting the user&#39;s touch input. 
     In some implementations, the touch input module  213  may be integrated with the display unit  251  so as to implement a touch screen. The touch screen may provide an input interface and an output interface between the vehicle  100  and the user. 
     The mechanical input module  214  may include at least one of a button, a dome switch, a jog wheel and a jog switch. An electric signal generated by the mechanical input module  214  may be provided to the processor  270  or the controller  170 . 
     The mechanical input module  214  may be arranged on a steering wheel, a center fascia, a center console, a cockpit module, a door and the like. 
     The internal camera  220  may acquire an internal image of the vehicle. The processor  270  may detect a user&#39;s state based on the internal image of the vehicle. The processor  270  may acquire information related to the user&#39;s gaze from the internal image of the vehicle. The processor  270  may detect a user gesture from the internal image of the vehicle. 
     The biometric sensing unit  230  may acquire the user&#39;s biometric information. The biometric sensing module  230  may include a sensor for detecting the user&#39;s biometric information and acquire fingerprint information and heart rate information regarding the user using the sensor. The biometric information may be used for user authentication. 
     The output unit  250  may generate an output related to a visual, audible or tactile signal. 
     The output unit  250  may include at least one of a display module  251 , an audio output module  252  and a haptic output module  253 . 
     The display module  251  may output graphic objects corresponding to various types of information. 
     The display module  251  may include at least one of a liquid crystal display (LCD), a thin film transistor-LCD (TFT LCD), an organic light-emitting diode (OLED), a flexible display, a three-dimensional (3D) display and an e-ink display. 
     The display module  251  may be inter-layered or integrated with a touch input module  213  to implement a touch screen. 
     The display module  251  may be implemented as a head up display (HUD). When the display module  251  is implemented as the HUD, the display module  251  may be provided with a projecting module so as to output information through an image which is projected on a windshield or a window. 
     The display module  251  may include a transparent display. The transparent display may be attached to the windshield or the window. 
     The transparent display may have a predetermined degree of transparency and output a predetermined screen thereon. The transparent display may include at least one of a thin film electroluminescent (TFEL), a transparent OLED, a transparent LCD, a transmissive transparent display and a transparent LED display. The transparent display may have adjustable transparency. 
     In some implementations, the user interface apparatus  200  may include a plurality of display modules  251   a  to  251   g.    
     The display module  251  may be disposed on one area of a steering wheel, one area  521   a ,  251   b ,  251   e  of an instrument panel, one area  251   d  of a seat, one area  251   f  of each pillar, one area  251   g  of a door, one area of a center console, one area of a headlining or one area of a sun visor, or implemented on one area  251   c  of a windshield or one area  251   h  of a window. 
     The audio output module  252  converts an electric signal provided from the processor  270  or the controller  170  into an audio signal for output. To this end, the audio output module  252  may include at least one speaker. 
     The haptic output module  253  generates a tactile output. For example, the haptic output module  253  may vibrate the steering wheel, a safety belt, a seat  110 FL,  110 FR,  11 ORL,  110 RR such that the user can recognize such output. 
     The processor  270  may control an overall operation of each unit of the user interface apparatus  200 . 
     According to an implementation, the user interface apparatus  200  may include a plurality of processors  270  or may not include any processor  270 . 
     When the processor  270  is not included in the user interface apparatus  200 , the user interface apparatus  200  may operate according to a control of a processor of another apparatus within the vehicle  100  or the controller  170 . 
     In some implementations, the user interface apparatus  200  may be called as a display apparatus for vehicle. 
     The user interface apparatus  200  may operate according to the control of the controller  170 . 
     The object detecting apparatus  300  is an apparatus for detecting an object located at outside of the vehicle  100 . 
     The object may be a variety of objects associated with driving (operation) of the vehicle  100 . 
     Referring to  FIGS. 5 and 6 , an object O may include a traffic lane OB 10 , another vehicle OB 11 , a pedestrian OB 12 , a two-wheeled vehicle OB 13 , traffic signals OB 14  and OB 15 , light, a road, a structure, a speed hump, a geographical feature, an animal and the like. 
     The lane OB 01  may be a driving lane, a lane next to the driving lane or a lane on which another vehicle comes in an opposite direction to the vehicle  100 . The lanes OB 10  may include, for example, left and right lines forming a lane. 
     The another vehicle OB 11  may be a vehicle which is moving around the vehicle  100 . The another vehicle OB 11  may be a vehicle located within a predetermined distance from the vehicle  100 . For example, the another vehicle OB 11  may be a vehicle which moves before or after the vehicle  100 . 
     The pedestrian OB 12  may be a person located near the vehicle  100 . The pedestrian OB 12  may be a person located within a predetermined distance from the vehicle  100 . For example, the pedestrian OB 12  may be a person located on a sidewalk or roadway. 
     The two-wheeled vehicle OB 13  may refer to a vehicle (transportation facility) that is located near the vehicle  100  and moves using two wheels. The two-wheeled vehicle OB 13  may be a vehicle that is located within a predetermined distance from the vehicle  100  and has two wheels. For example, the two-wheeled vehicle OB 13  may be a motorcycle or a bicycle that is located on a sidewalk or roadway. 
     The traffic signals may include a traffic light OB 15 , a traffic sign OB 14  and a pattern or text drawn on a road surface. 
     The light may be light emitted from a lamp provided on another vehicle. The light may be light generated by a streetlamp. The light may be solar light. 
     The road may include a road surface, a curve, an upward slope, a downward slope and the like. 
     The structure may be an object that is located near a road and fixed on the ground. For example, the structure may include a streetlamp, a roadside tree, a building, an electric pole, a traffic light, a bridge and the like. 
     The geographical feature may include a mountain, a hill and the like. 
     In some implementations, objects may be classified into a moving object and a fixed object. For example, the moving object may include another vehicle and a pedestrian. The fixed object may be, for example, a traffic signal, a road and a structure. 
     The object detecting apparatus  300  may include a camera  310 , a radar  320 , a LiDAR  330 , an ultrasonic sensor  340 , an infrared sensor  350  and at least one processor, such as a processor  370 . 
     According to an implementation, the object detecting apparatus  300  may further include other components in addition to the components described, or may not include some of the components described. 
     The camera  310  may be located on an appropriate portion outside the vehicle to acquire an external image of the vehicle. The camera  310  may be a mono camera, a stereo camera  310   a , an around view monitoring (AVM) camera  310   b  or a 360-degree camera. 
     For example, the camera  310  may be disposed adjacent to a front windshield within the vehicle to acquire a front image of the vehicle. Or, the camera  310  may be disposed adjacent to a front bumper or a radiator grill. 
     For example, the camera  310  may be disposed adjacent to a rear glass within the vehicle to acquire a rear image of the vehicle. Or, the camera  310  may be disposed adjacent to a rear bumper, a trunk or a tail gate. 
     For example, the camera  310  may be disposed adjacent to at least one of side windows within the vehicle to acquire a side image of the vehicle. Or, the camera  310  may be disposed adjacent to a side mirror, a fender or a door. 
     The camera  310  may provide an acquired image to the processor  370 . 
     The radar  320  may include electric wave transmitting and receiving portions. The radar  320  may be implemented as a pulse radar or a continuous wave radar according to a principle of emitting electric waves. The radar  320  may be implemented in a frequency modulated continuous wave (FMCW) manner or a frequency shift Keying (FSK) manner according to a signal waveform, among the continuous wave radar methods. 
     The radar  320  may detect an object in a time of flight (TOF) manner or a phase-shift manner through the medium of the electric wave, and detect a position of the detected object, a distance from the detected object and a relative speed with the detected object. 
     The radar  320  may be disposed on an appropriate position outside the vehicle for detecting an object which is located at a front, rear or side of the vehicle. 
     The LiDAR  330  may include laser transmitting and receiving portions. The LiDAR  330  may be implemented in a time of flight (TOF) manner or a phase-shift manner. 
     The LiDAR  330  may be implemented as a drive type or a non-drive type. 
     For the drive type, the LiDAR  330  may be rotated by a motor and detect object near the vehicle  100 . 
     For the non-drive type, the LiDAR  330  may detect, through light steering, objects which are located within a predetermined range based on the vehicle  100 . The vehicle  100  may include a plurality of non-drive type LiDARs  330 . 
     The LiDAR  330  may detect an object in a TOP manner or a phase-shift manner through the medium of a laser beam, and detect a position of the detected object, a distance from the detected object and a relative speed with the detected object. 
     The LiDAR  330  may be disposed on an appropriate position outside the vehicle for detecting an object located at the front, rear or side of the vehicle. 
     The ultrasonic sensor  340  may include ultrasonic wave transmitting and receiving portions. The ultrasonic sensor  340  may detect an object based on an ultrasonic wave, and detect a position of the detected object, a distance from the detected object and a relative speed with the detected object. 
     The ultrasonic sensor  340  may be disposed on an appropriate position outside the vehicle for detecting an object located at the front, rear or side of the vehicle. 
     The infrared sensor  350  may include infrared light transmitting and receiving portions. The infrared sensor  340  may detect an object based on infrared light, and detect a position of the detected object, a distance from the detected object and a relative speed with the detected object. 
     The infrared sensor  350  may be disposed on an appropriate position outside the vehicle for detecting an object located at the front, rear or side of the vehicle. 
     The processor  370  may control an overall operation of each unit of the object detecting apparatus  300 . 
     The processor  370  may detect an object based on an acquired image, and track the object. The processor  370  may execute operations, such as a calculation of a distance from the object, a calculation of a relative speed with the object and the like, through an image processing algorithm. 
     The processor  370  may detect an object based on a reflected electromagnetic wave which an emitted electromagnetic wave is reflected from the object, and track the object. The processor  370  may execute operations, such as a calculation of a distance from the object, a calculation of a relative speed with the object and the like, based on the electromagnetic wave. 
     The processor  370  may detect an object based on a reflected laser beam which an emitted laser beam is reflected from the object, and track the object. The processor  370  may execute operations, such as a calculation of a distance from the object, a calculation of a relative speed with the object and the like, based on the laser beam. 
     The processor  370  may detect an object based on a reflected ultrasonic wave which an emitted ultrasonic wave is reflected from the object, and track the object. The processor  370  may execute operations, such as a calculation of a distance from the object, a calculation of a relative speed with the object and the like, based on the ultrasonic wave. 
     The processor may detect an object based on reflected infrared light which emitted infrared light is reflected from the object, and track the object. The processor  370  may execute operations, such as a calculation of a distance from the object, a calculation of a relative speed with the object and the like, based on the infrared light. 
     According to an implementation, the object detecting apparatus  300  may include a plurality of processors  370  or may not include any processor  370 . For example, each of the camera  310 , the radar  320 , the LiDAR  330 , the ultrasonic sensor  340  and the infrared sensor  350  may include the processor in an individual manner. 
     When the processor  370  is not included in the object detecting apparatus  300 , the object detecting apparatus  300  may operate according to the control of a processor of an apparatus within the vehicle  100  or the controller  170 . 
     The object detecting apparatus  300  may operate according to the control of the controller  170 . 
     The communication apparatus  400  is an apparatus for performing communication with an external device. Here, the external device may be another vehicle, a mobile terminal or a server. 
     The communication apparatus  400  may perform the communication by including at least one of a transmitting antenna, a receiving antenna, and radio frequency (RF) circuit and RF device for implementing various communication protocols. 
     The communication apparatus  400  may include a short-range communication unit  410 , a location information unit  420 , a V2X communication unit  430 , an optical communication unit  440 , a broadcast transceiver  450  and at least one processor, such as a processor  470 . 
     According to an implementation, the communication apparatus  400  may further include other components in addition to the components described, or may not include some of the components described. 
     The short-range communication unit  410  is a unit for facilitating short-range communications. Suitable technologies for implementing such short-range communications include BLUETOOTH™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra-WideBand (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus), and the like. 
     The short-range communication unit  410  may construct short-range area networks to perform short-range communication between the vehicle  100  and at least one external device. 
     The location information unit  420  is a unit for acquiring position information. For example, the location information unit  420  may include a Global Positioning System (GPS) module or a Differential Global Positioning System (DGPS) module. 
     The V2X communication unit  430  is a unit for performing wireless communications with a server (Vehicle to Infra; V2I), another vehicle (Vehicle to Vehicle; V2V), or a pedestrian (Vehicle to Pedestrian; V2P). The V2X communication unit  430  may include an RF circuit implementing a communication protocol with the infra (V2I), a communication protocol between the vehicles (V2V) and a communication protocol with a pedestrian (V2P). 
     The optical communication unit  440  is a unit for performing communication with an external device through the medium of light. The optical communication unit  440  may include a light-emitting diode for converting an electric signal into an optical signal and sending the optical signal to the exterior, and a photodiode for converting the received optical signal into an electric signal. 
     According to an implementation, the light-emitting diode may be integrated with lamps provided on the vehicle  100 . 
     The broadcast transceiver  450  is a unit for receiving a broadcast signal from an external broadcast managing entity or transmitting a broadcast signal to the broadcast managing entity via a broadcast channel. The broadcast channel may include a satellite channel, a terrestrial channel, or both. The broadcast signal may include a TV broadcast signal, a radio broadcast signal and a data broadcast signal. 
     The processor  470  may control an overall operation of each unit of the communication apparatus  400 . 
     According to an implementation, the communication apparatus  400  may include a plurality of processors  470  or may not include any processor  470 . 
     When the processor  470  is not included in the communication apparatus  400 , the communication apparatus  400  may operate according to the control of a processor of another device within the vehicle  100  or the controller  170 . 
     In some implementations, the communication apparatus  400  may implement a display apparatus for a vehicle together with the user interface apparatus  200 . In this instance, the display apparatus for the vehicle may be referred to as a telematics apparatus or an Audio Video Navigation (AVN) apparatus. 
     The communication apparatus  400  may operate according to the control of the controller  170 . 
     The driving control apparatus  500  is an apparatus for receiving a user input for driving. 
     In a manual mode, the vehicle  100  may be operated based on a signal provided by the driving control apparatus  500 . 
     The driving control apparatus  500  may include a steering input device  510 , an acceleration input device  530  and a brake input device  570 . 
     The steering input device  510  may receive an input regarding a driving direction of the vehicle  100  from the user. The steering input device  510  is preferably configured in the form of a wheel allowing a steering input in a rotating manner. According to some implementations, the steering input device may also be configured in a shape of a touch screen, a touchpad or a button. 
     The acceleration input device  530  may receive an input for accelerating the vehicle  100  from the user. The brake input device  570  may receive an input for braking the vehicle  100  from the user. Each of the acceleration input device  530  and the brake input device  570  is preferably configured in the form of a pedal. According to some implementations, the acceleration input device or the brake input device may also be configured in a shape of a touch screen, a touchpad or a button. 
     The driving control apparatus  500  may operate according to the control of the controller  170 . 
     The vehicle operating apparatus  600  is an apparatus for electrically controlling operations of various devices within the vehicle  100 . 
     The vehicle operating apparatus  600  may include a power train operating unit  610 , a chassis operating unit  620 , a door/window operating unit  630 , a safety apparatus operating unit  640 , a lamp operating unit  650 , and an air-conditioner operating unit  660 . 
     According to some implementations, the vehicle operating apparatus  600  may further include other components in addition to the components described, or may not include some of the components described. 
     In some implementations, the vehicle operating apparatus  600  may include at least one processor. Each unit of the vehicle operating apparatus  600  may individually include a processor. 
     The power train operating unit  610  may control an operation of a power train device. 
     The power train operating unit  610  may include a power source operating portion  611  and a gearbox operating portion  612 . 
     The power source operating portion  611  may perform a control for a power source of the vehicle  100 . 
     For example, when a fossil fuel-based engine is used as the power source, the power source operating portion  611  may perform an electronic control for the engine. Accordingly, an output torque and the like of the engine can be controlled. The power source operating portion  611  may adjust the engine output torque according to the control of the controller  170 . 
     For example, when an electric energy-based motor is used as the power source, the power source operating portion  611  may perform a control for the motor. The power source operating portion  611  may adjust a rotating speed, a torque and the like of the motor according to the control of the controller  170 . 
     The gearbox operating portion  612  may perform a control for a gearbox. 
     The gearbox operating portion  612  may adjust a state of the gearbox. The gearbox operating portion  612  may change the state of the gearbox into drive (forward) (D), reverse (R), neutral (N) or parking (P). 
     In some implementations, when an engine is the power source, the gearbox operating portion  612  may adjust a locked state of a gear in the drive (D) state. 
     The chassis operating unit  620  may control an operation of a chassis device. 
     The chassis operating unit  620  may include a steering operating portion  621 , a brake operating portion  622  and a suspension operating portion  623 . 
     The steering operating portion  621  may perform an electronic control for a steering apparatus within the vehicle  100 . The steering operating portion  621  may change a driving direction of the vehicle. 
     The brake operating portion  622  may perform an electronic control for a brake apparatus within the vehicle  100 . For example, the brake operating portion  622  may control an operation of brakes provided at wheels to reduce speed of the vehicle  100 . 
     In some implementations, the brake operating portion  622  may individually control each of a plurality of brakes. The brake operating portion  622  may differently control braking force applied to each of a plurality of wheels. 
     The suspension operating portion  623  may perform an electronic control for a suspension apparatus within the vehicle  100 . For example, the suspension operating portion  623  may control the suspension apparatus to reduce vibration of the vehicle  100  when a bump is present on a road. 
     In some implementations, the suspension operating portion  623  may individually control each of a plurality of suspensions. 
     The door/window operating unit  630  may perform an electronic control for a door apparatus or a window apparatus within the vehicle  100 . 
     The door/window operating unit  630  may include a door operating portion  631  and a window operating portion  632 . 
     The door operating portion  631  may perform the control for the door apparatus. The door operating portion  631  may control opening or closing of a plurality of doors of the vehicle  100 . The door operating portion  631  may control opening or closing of a trunk or a tail gate. The door operating portion  631  may control opening or closing of a sunroof. 
     The window operating portion  632  may perform the electronic control for the window apparatus. The window operating portion  632  may control opening or closing of a plurality of windows of the vehicle  100 . 
     The safety apparatus operating unit  640  may perform an electronic control for various safety apparatuses within the vehicle  100 . 
     The safety apparatus operating unit  640  may include an airbag operating portion  641 , a seatbelt operating portion  642  and a pedestrian protecting apparatus operating portion  643 . 
     The airbag operating portion  641  may perform an electronic control for an airbag apparatus within the vehicle  100 . For example, the airbag operating portion  641  may control the airbag to be deployed upon a detection of a risk. 
     The seatbelt operating portion  642  may perform an electronic control for a seatbelt apparatus within the vehicle  100 . For example, the seatbelt operating portion  642  may control passengers to be motionlessly seated in seats  110 FL,  110 FR,  110 RL, and  110 RR using seatbelts upon a detection of a risk. 
     The pedestrian protecting apparatus operating portion  643  may perform an electronic control for a hood lift and a pedestrian airbag. For example, the pedestrian protecting apparatus operating portion  643  may control the hood lift and the pedestrian airbag to be open up upon detecting pedestrian collision. 
     The lamp operating unit  650  may perform an electronic control for various lamp apparatuses within the vehicle  100 . 
     The air-conditioner operating unit  660  may perform an electronic control for an air conditioner within the vehicle  100 . For example, the air-conditioner operating unit  660  may control the air conditioner to supply cold air into the vehicle when internal temperature of the vehicle is high. 
     The vehicle operating apparatus  600  may include at least one processor. Each unit of the vehicle operating apparatus  600  may individually include a processor. 
     The vehicle operating apparatus  600  may operate according to the control of the controller  170 . 
     The operation system  700  is a system that controls various driving modes of the vehicle  100 . The operation system  700  may include a driving system  710 , a parking exit system  740  and a parking system  750 . 
     In some implementations, the operation system  700  may further include other components in addition to components to be described, or may not include some of the components to be described. 
     In some implementations, the operation system  700  may include at least one processor. For example, each unit of the operation system  700  may individually include a processor. 
     In some implementations, the operation system may be implemented by the controller  170  in a software configuration. 
     According to some implementations, the operation system  700  may include at least one of the user interface apparatus  200 , the object detecting apparatus  300 , the communication apparatus  400 , the vehicle operating apparatus  600  and the controller  170 . 
     The driving system  710  may perform driving of the vehicle  100 . 
     The driving system  710  may receive navigation information from a navigation system  770 , transmit a control signal to the vehicle operating apparatus  600 , and perform driving of the vehicle  100 . 
     The driving system  710  may receive object information from the object detecting apparatus  300 , transmit a control signal to the vehicle operating apparatus  600  and perform driving of the vehicle  100 . 
     The driving system  710  may receive a signal from an external device through the communication apparatus  400 , transmit a control signal to the vehicle operating apparatus  600 , and perform driving of the vehicle  100 . 
     The parking exit system  740  may perform an exit of the vehicle  100  from a parking lot. 
     The parking exit system  740  may receive navigation information from the navigation system  770 , transmit a control signal to the vehicle operating apparatus  600 , and perform the exit of the vehicle  100  from the parking lot. 
     The parking exit system  740  may receive object information from the object detecting apparatus  300 , transmit a control signal to the vehicle operating apparatus  600  and perform the exit of the vehicle  100  from the parking lot. 
     The parking exit system  740  may receive a signal from an external device through the communication apparatus  400 , transmit a control signal to the vehicle operating apparatus  600 , and perform the exit of the vehicle  100  from the parking lot. 
     The parking system  750  may perform parking of the vehicle  100 . 
     The parking system  750  may receive navigation information from the navigation system  770 , transmit a control signal to the vehicle operating apparatus  600 , and park the vehicle  100 . 
     The parking system  750  may receive object information from the object detecting apparatus  300 , transmit a control signal to the vehicle operating apparatus  600  and park the vehicle  100 . 
     The parking system  750  may receive a signal from an external device through the communication apparatus  400 , transmit a control signal to the vehicle operating apparatus  600 , and park the vehicle  100 . 
     The navigation system  770  may provide navigation information. The navigation information may include at least one of map information, information regarding a set destination, path information according to the set destination, information regarding various objects on a path, lane information and current location information of the vehicle. 
     The navigation system  770  may include a memory and at least one processor. The memory may store the navigation information. The processor may control an operation of the navigation system  770 . 
     In some implementations, the navigation system  770  may update prestored information by receiving information from an external device through the communication apparatus  400 . 
     In some implementations, the navigation system  770  may be classified as a sub component of the user interface apparatus  200 . 
     The sensing unit  120  may sense a status of the vehicle. The sensing unit  120  may include a posture sensor (e.g., a yaw sensor, a roll sensor, a pitch sensor, etc.), a collision sensor, a wheel sensor, a speed sensor, a tilt sensor, a weight-detecting sensor, a heading sensor, a gyro sensor, a position module, a vehicle forward/backward movement sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor by a turn of a handle, a vehicle internal temperature sensor, a vehicle internal humidity sensor, an ultrasonic sensor, an illumination sensor, an accelerator position sensor, a brake pedal position sensor, and the like. 
     The sensing unit  120  may acquire sensing signals with respect to vehicle-related information, such as a posture, a collision, an orientation, a position (GPS information), an angle, a speed, an acceleration, a tilt, a forward/backward movement, a battery, a fuel, tires, lamps, internal temperature, internal humidity, a rotated angle of a steering wheel, external illumination, pressure applied to an accelerator, pressure applied to a brake pedal and the like. 
     The sensing unit  120  may further include an accelerator sensor, a pressure sensor, an engine speed sensor, an air flow sensor (AFS), an air temperature sensor (ATS), a water temperature sensor (WTS), a throttle position sensor (TPS), a TDC sensor, a crank angle sensor (CAS), and the like. 
     The interface unit  130  may serve as a path allowing the vehicle  100  to interface with various types of external devices connected thereto. For example, the interface unit  130  may be provided with a port connectable with a mobile terminal, and connected to the mobile terminal through the port. In this instance, the interface unit  130  may exchange data with the mobile terminal. 
     In some implementations, the interface unit  130  may serve as a path for supplying electric energy to the connected mobile terminal. When the mobile terminal is electrically connected to the interface unit  130 , the interface unit  130  supplies electric energy supplied from a power supply unit  190  to the mobile terminal according to the control of the controller  170 . 
     The memory  140  is electrically connected to the controller  170 . The memory  140  may store basic data for units, control data for controlling operations of units and input/output data. The memory  140  may be a variety of storage devices, such as ROM, RAM, EPROM, a flash drive, a hard drive and the like in a hardware configuration. The memory  140  may store various data for overall operations of the vehicle  100 , such as programs for processing or controlling the controller  170 . 
     In some implementations, the memory  140  may be integrated with the controller  170  or implemented as a sub component of the controller  170 . 
     The controller  170  may control an overall operation of each unit of the vehicle  100 . The controller  170  may be referred to as an Electronic Control Unit (ECU). 
     The power supply unit  190  may supply power required for an operation of each component according to the control of the controller  170 . Specifically, the power supply unit  190  may receive power supplied from an internal battery of the vehicle, and the like. 
     At least one processor and the controller  170  included in the vehicle  100  may be implemented using at least one of application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro controllers, microprocessors, and electric units performing other functions. 
     The vehicle  100  according to the present disclosure may include a vehicle lamp  800 . Specifically, the vehicle lamp  800  may include all lamps provided in the vehicle  100 . 
     The vehicle lamp  800  may include a head lamp provided in front of the vehicle  100 . The head lamp may be provided on at least one of a front left side and a front right side of the vehicle  100 . The head lamp may be configured to output, project, irradiate, discharge, emit, or generate light to at least one of a front side, a front left side, and a front right side of the vehicle  100 . 
     The head lamp may include at least one of a low-beam output module, a high-beam output module, a turn signal light, an emergency light, a fog light, and a corner light. 
     Furthermore, the vehicle lamp  800  may also include a rear lamp (or a rear combination lamp) provided at a rear side of the vehicle  100 . The rear lamp may be provided on at least one of a rear left side of the vehicle  100  and a rear right side of the vehicle or provided integrally on a rear surface of the vehicle  100 . The rear lamp may be formed to output light to at least one of a rear side, a rear left side, and a rear right side of the vehicle  100 . 
     The rear lamp may include at least one of a brake lamp, a reverse lamp, a turn signal lamp, and a tail lamp. 
     In addition, the vehicle lamp  800  may include a side lamp provided on a side surface of the vehicle. For example, the side lamp may include a turn signal lamp or an emergency lamp provided in a side mirror of the vehicle. 
     Furthermore, the vehicle lamp  800  of the present disclosure may include a lamp module that forms a high or low-beam pattern, a positioning lamp, a daytime running lamp (DRL), and an adaptive front lighting system (AFLS) or the like, or may be separately provided in a separate form. 
     As described above, the vehicle lamp  800  described in this specification may be applied to all types of lamps that can be provided in a vehicle. 
     In some implementations, at least one processor configured to control the vehicle lamp  800  may be provided. For example, the processor may be the lamp operating unit  650  or the controller  170  illustrated in  FIG. 7 . In some implementations, the processor may be an additional processor provided in the vehicle lamp  800 . 
     In this specification, an example configuration is described in which a processor  870  for controlling the vehicle lamp  800  is included in the vehicle lamp  800 . However, the present disclosure will not be limited thereto, and all contents/functions/features related to the processor  870  described herein may be carried out by, for example, the lamp operating unit  650  or the controller  170 . 
     The processor  870  may receive a control signal for controlling the vehicle lamp  800  and generate a control signal for controlling the vehicle lamp  800  based on an ADAS (Advanced Driver Assistance Systems) function. 
     The processor  870  may control the power supply unit  190  such that the power of the power supply unit  190  is supplied to the vehicle lamp  800  based on the control signal. 
     Furthermore, the processor  870  may control the operation of a light source unit  810  and a shield  840  (or shield unit) included in the vehicle lamp  800  based on the control signal. 
     Various implementations in which the light source unit  810  and the shield  840  are operated under the control of the processor  870  will be described later in detail with reference to the accompanying drawings. 
       FIG. 8  illustrates an exploded view of an example of a vehicle lamp according to some implementations disclosed herein;  FIG. 9A  illustrates a front view of the vehicle lamp illustrated in  FIG. 8 ;  FIGS. 9B-9C  illustrate side views of the vehicle lamp illustrated in  FIG. 8 . 
       FIG. 10A  illustrates a front view of the vehicle lamp illustrated in  FIG. 8  and  FIGS. 10B-10D  illustrate cross-sectional views of various examples of a light source unit applicable to the present disclosure. 
       FIGS. 11-16B  illustrate diagrams of various methods of controlling the vehicle lamp illustrated in  FIG. 8 . 
     The vehicle lamp  800  related to the present disclosure may include a lens  850 , a first case  802 , a second case  803 , a shield  840 , a light source unit  810 , and at least one processor, such as a processor  870 . 
     In this specification, a direction in which light is output from the vehicle lamp  800  is defined as being the front. Specifically, the front (F) may denote a direction of light output from a light source of the vehicle lamp  800  through the lens  850 . For example, the light generated by the light source  822  travels in the front direction along an optical axis (e.g., an axis perpendicular to a front surface of the lamp  800 ) to a front surface of the vehicle lamp (“lens side”). For example, the front (F) may denote a direction from the light source unit  810  to the lens  850 . 
     The light source unit  810  may include at least one of an optical module  820  including at least one light source  822  and a reflector  830 . 
     The optical module  820  may be disposed within the reflector  830 . The light source  822  of the optical module  820  disposed within the reflector  830  emits light to reflectors  830   a  and  830   b  provided within the reflector  830 . 
     For an example, the optical module  820  may be mounted with a light source  822  on a substrate (e.g., a printed circuit board (PCB substrate)) as illustrated in  FIG. 8 . Furthermore, the reflector  830  may be provided with a groove  832  formed to allow insertion of the optical module  820  therein. A first reflector  830   a  (“an upper reflector”) may be provided at an upper side of the groove  832  and a second reflector  830   b  (“a lower reflector”) may be provided at a lower side of the groove  832 . 
     The optical module  820  may be inserted into the groove  832  to allow positioning of the light source  822  within the reflector  830 . However, the present disclosure is not limited thereto, and the optical module  820  or the light source  822  may be disposed within the reflector  830  in various ways. 
     The reflectors  830   a ,  830   b  of the reflector  830  may be formed to reflect light generated by the light source  822  in a forward direction. For example, the reflectors  830   a ,  830   b  of the reflector  830  may have a hemispherical shape to reflect light generated by the light source  822  toward the lens  850 . 
     In addition, the reflectors  830   a ,  830   b  may have reflective surfaces with various shapes in order to modify an output beam pattern in various ways. 
     Various types of light sources  822   a ,  822   b  may be implemented to generate light. For example, the light sources  822   a ,  822   b  may be a halogen light source, a light emitting diode (LED), a micro LED, a matrix LED, a laser diode (LD), and the like. In general, light sources  822   a  and  822   b  may include any suitable type of light sources configured to generate light. 
     A second case  803  may be mounted forward of the reflector  830 . The shield  840  of the present disclosure may be mounted on the second case  803 . 
     The first case  802  is mounted on the front of the second case  802  and the lens  850  of the present disclosure can be mounted on the first case  802 . 
     As such, in some implementations, the vehicle lamp  800  includes a light source unit  810  including at least one light source  822 , a lens  850  located forward of the light source unit to transmit light generated by the light source unit, a shield  840  located between the light source unit  810  and the lens  850 , and formed to allow at least part of the light generated by the light source unit  810  (e.g., by the light source  822 ) to pass through. 
     The second case  803  may be coupled to a front side of the reflector  830 . The shield  840  formed to allow at least part of light generated by the light source unit  810  to pass through may be coupled to the second case  802 . 
     The second case  803  may include an inner space configured for mounting of the shield  840 . Furthermore, the second case  802  may include a groove for fixing a body (e.g., a cylindrical rod) for supporting the shield  840 . The shield  840  may be positioned within the second case  802  by inserting (or fixing) the body into the groove. 
     Furthermore, the vehicle lamp  800  of the present disclosure may include an operating unit for operating (e.g., rotating) the shield  840 . The operating unit may be provided at an inner or outer portion of the second case  802 . 
     The second case  803  may be referred to as, for example, a static module. 
     In some implementations, the first case  802  may be coupled to a front side of the second case  803 . 
     One surface (e.g., a rear surface) of the first case  802  is coupled to the second case  803  and another surface (e.g., a front surface) of the first case  802  is coupled to the lens  850 . 
     The first case  802  may form an internal space to facilitate the operation of the shield  840  provided in the second case  803 . Furthermore, the first case  802  may also form an internal space for correcting an optical path of the light transmitted by the shield  840  provided in the second case  803 . 
     The first case  802  may be referred to as, for example, a holder. 
     Although the example of  FIG. 8  describes the first case  802  and the second case  803  as being separate components, implementations of the present disclosure are not limited thereto. For example, in some implementations, the first case  802  and the second case  803  may be integrally formed. 
     Hereinafter, the shield  840  included in the vehicle lamp of the present disclosure will be described in more detail. 
     Referring to  FIG. 11 , the shield  840  may include a plurality of pixels, and may be formed to independently control light transmittance (or optical transmittance) of each pixel. 
     Through this, the vehicle lamp of the present disclosure may control the light transmittance of at least part of the plurality of pixels included in the shield  840  to block at least part of light generated by the light source unit  810 . 
     The present disclosure may include a plurality of pixels and control the light transmittance of at least part of the plurality of pixels, thereby providing a vehicle lamp configured to project light with various beam patterns. 
     The shield  840  of the present disclosure may include a plurality of pixels  840   a,    840   b  as illustrated in  FIG. 11 . Each of the plurality of pixels  840   a ,  840   b  included in the shield  840  (or each pixel) may be formed to independently control the light transmittance. 
     In some implementations, the plurality of pixels  840   a ,  840   b  may be arranged in a matrix form as illustrated in  FIG. 11 . Each of the plurality of pixels may be connected with a wiring for receiving a control signal. As another example, a plurality of pixels may be grouped into at least one group, and a wiring for receiving a control signal for each group may be connected to control light transmittance for each group. 
     For example, each of the plurality of pixels may be grouped into at least one row or at least one column. 
     In this specification, an example is described in which a wiring is connected to receive control signals for each of a plurality of pixels to independently control each pixel. 
     In some implementations, each pixel  844  may be formed to partially change the light transmittance. For example, one pixel may fall under a first region  844   a  and a second region  844   b , and the first region  844   a  and the second region  844   b  may be configured to have different light transmittance characteristics. 
     As such, each pixel included in the shield  840  of the present disclosure may be configured to have variable light transmittance, and in some implementations, a light transmittance of a first sub portion of a pixel is controllable to be different from a second sub portion of the pixel. 
     Each pixel included in the shield  840  may be provided by various configurations (e.g., materials, techniques) configured to change the light transmittance. For example, each pixel may be an LC (Liquid Crystal) film, an LCD (Liquid Crystal Display), a stretch film, an ITO film, or the like having a variable light transmittance according to the strength of an applied electric signal (e.g., a current, a voltage, or electric power). 
     The shield  840  of the present disclosure may be referred to as, for example, a matrix shield, a display shield, or a variable shield. 
     In some implementations, the vehicle lamp  800  of the present disclosure may include a processor  870  for controlling the light transmittance of the shield  840 . 
     The processor  870  may control constituent elements included in the vehicle lamp  800 . In some implementations, as previously described, the processor  870  may be the lamp operating unit  650  or the controller  170 . 
     The vehicle lamp  800  of the present disclosure may control the light transmittance of a plurality of pixels included in the shield  840  to form various types of beam patterns. 
     For example, processor  870  may control a portion of the plurality of pixels to block light from passing through such that a beam pattern generated by the light transmitted by the shield  840  has a cut-off line  841 . 
     In some implementations, the cut-off line  841  may be configured such that when the vehicle lamp  800  outputs a low-beam (“downward light”), a predetermined cut-off line is generated in accordance with the regulation. 
     For example, a cut-off line may be defined as a boundary or a line in an illuminated region that forms when the light emitted by the vehicle lamp  800  is projected onto a planar surface (e.g., a wall surface) spaced by a predetermined distance from the vehicle lamp  800  (or the vehicle  100 ). 
     The cut-off line may denote a boundary line, at one side of which the brightness of light is greater than a reference brightness value when the light is projected on the plane. 
     Referring to  FIGS. 12A and 12B , a shape of the cut-off line may be defined differently according to the regulation. In general, the regulation may vary depending on the operating location of the vehicle lamp or the vehicle including the vehicle lamp. For example, the regulation may vary depending on the country, region, state, or city in which the vehicle including the vehicle lamp is operated. 
     For an example, in regions implementing a right-hand traffic regulation (in which drivers sit on the left side of the vehicle, or “left-hand drive”) in which vehicles travel on respective right side of the road, a low-beam pattern (or cut-off line) with the left side lower than the right side should be projected as illustrated in  FIG. 12A . As another example, in regions implementing a left-hand traffic regulation (“right-hand drive”), a low-beam pattern (or cut-off line) with the right side lower than the left side should be projected as illustrated in  FIG. 12B . 
     Such low-beam patterns can help mitigate light from being projected onto the other vehicle traveling on the opposite side (or in the opposite direction), thereby preventing glare from affecting the driver of the other vehicle. 
     The processor  870  may determine a current location of the vehicle  100  provided with the vehicle lamp  800  based on information received from the location information unit  420 . Furthermore, the processor  870  may control the light transmittance of a plurality of pixels included in the shield  840  to irradiate a low-beam pattern corresponding to a regulation applicable to the relevant country (or region, state) based on the current location. 
     The processor  870  may control a portion of the plurality of pixels of the shield  840  to block light from passing through (e.g., by controlling the light transmittance thereof to be zero) as illustrated in  FIGS. 11 and 12 , thereby projecting a light in a low-beam pattern. 
     Referring back to  FIG. 11 , when the light transmittance of a portion (e.g.,  842   a ,  842   b ,  842   c ) of the plurality of pixels is controlled (e.g., the light transmittance is controlled to be zero), light directed to the portion where the light transmittance is set to 0 is blocked by the shield  840  (specifically, a portion of pixels in which the light transmittance is controlled to block transmission of the light) is blocked and does not reach the lens  850 . 
     Accordingly, only a part of light generated by the light source unit  810  directed to the pixels not having a light transmittance of zero is transmitted to the lens  850  through the shield  840 . The light received by to the lens  850  is then projected to the outside by the lens  850  to generate a predetermined beam pattern (e.g., a low-beam pattern or a cut-off line). 
     On the other hand, the shield  840  of the vehicle lamp  800  related to the present disclosure may be formed or controlled to allow each of the plurality of pixels to transmit only a portion of light received from the light source unit  810 . 
     For example, the light transmittance of each pixel may be controlled to transmit only a portion of the received light. For example, if it is assumed that light having an intensity corresponding to 100 is received at a specific pixel and the light transmittance of the specific pixel is set (controlled) to 50%, the specific pixel may transmit light having an intensity corresponding to 50 from the initial intensity of the received light corresponding to 100. Accordingly, the brightness of light that has passed through respective pixels may be reduced (for example, the brightness of a portion of a beam pattern generated by light that has passed through the relevant pixel may be reduced). 
     In this manner, the processor  870  may independently control the light transmittance of a plurality of pixels included in the shield  840  to generate various patterns of light. 
     For example, as illustrated in  FIG. 11 , the light transmittance of pixels included in a first portion  842   a  of a plurality of pixels is set to 50%, and the light transmittance of pixels included in a second portion  842   b  other than the first portion is set to 20%, and the light transmittance of pixels included in a third portion  842   c  other than the first and second portions is set to 0% to generate a varying beam pattern, which may have a gradation effect. 
     As an example, in case of  FIG. 11 , the light transmittance of a plurality of pixels included in the shield  840  may be set to gradually increase along one direction (e.g., upward direction), thereby implementing a gradation effect (an effect of gradually increasing or decreasing brightness along a predetermined direction) on a beam pattern projected, for example, in a forward direction of the vehicle lamp  800 , such as the optical axis direction of the vehicle lamp. 
     On the other hand, the processor  870  may control a portion of the plurality of pixels blocking the light from passing through in a different manner based on whether the incident light is directly received (“direct light”) from the light source unit  810  or is reflected (“reflected light”) before being received. 
     Referring to  FIGS. 10A-10D , the light source unit  810  of the present disclosure may be configured to direct light generated by the light source  822  toward the reflector  830  such that the reflected light is incident on the shield  840 . In this case, the light source unit  810  includes at least one light source  822  and a reflector  830  formed to reflect light generated by the light source  822  toward the shield  840 . 
       FIGS. 10B-10D  are cross-sectional views taken along line A-A of the vehicle lamp  800  shown in  FIG. 10A . 
     Referring to  FIG. 10B , the vehicle lamp  800  of the present disclosure may include a first light source  822   a  and a second light source  822   b.    
     The first light source  822   a  may be formed to output light in an upward direction. The second light source  822   b  may be formed to output light in a downward direction. 
     The reflector  830  may include a first reflector  830   a  and a second reflector  830   b . The first reflector  830   a  may be an upper reflector disposed at an upper side with respect to an axis horizontally crossing the center of the reflector  830 . 
     The second reflector  830   b  may be a lower reflector disposed at a lower side with respect to the axis horizontally crossing the center of the reflector  830 . 
     Referring to  FIG. 10B , light (l) generated by the first light source  822   a  may be reflected by the first reflector  830   a  and directed to the shield  840  (e.g., an upper end of the shield  840 ). 
     The light (l) generated by the first light source  822   a  and reflected by the first reflector  830   a  may form a low-beam pattern. For example, the light (l) generated upward from the first light source  822   a  is reflected by the first reflector  830   a  and projected in a downward direction. As such, the first reflector  830   a  may be a reflector configured to form a low-beam pattern. 
     Still referring to  FIG. 10B , light (h) generated by the second light source  822   b  may be reflected by the second reflector  830   b  and directed to the shield  840  (e.g., a lower end of the shield  840 ). 
     The light (h) generated by the second light source  822   b  and reflected by the second reflector  830   b  may form a high-beam pattern. For example, light generated downward from the second light source  822   b  may be reflected by the second reflector  830   b  and irradiated in an upward direction. As such, the second reflector  830   b  may be configured to form a high-beam pattern. 
     During operation, the processor  870  may turn on only the first light source  822   a  and turn off the second light source  822   b  when outputting a low-beam. On the other hand, when outputting a high-beam, the processor  870  may turn on the first light source  822   a  and the second light source  822   b  together or turn on only the second light source  822   b.    
     On the other hand,  FIG. 10C  illustrates a case where the vehicle lamp  800  for a vehicle includes one light source  822   c . In this case, the light source  822   c  may be formed to generate light toward the rear side opposite to the front side. 
     The reflector  830  may be provided at a rear side of the light source  822   c.  Here, the reflector  830  includes a first region (corresponding to the first reflector  830   a ) disposed at an upper side with respect to an axis horizontally crossing the center thereof, and a second region (corresponding to the second reflector  830   b ) at a lower side thereof. 
     The light reflected by the first region  830   a  of the reflector among light generated toward the reflector by the light source  822   c  may form a low-beam pattern and the light reflected by the second region  830   b  of the reflector may form a high-beam pattern. 
     Such formation of beam patterns is a result of light emitted toward the first region  830   a  of the reflector among light generated by the light source  822   c  being reflected downward by the first region  830   a  to transmit through the lens  850 , and the light emitted toward the second region  830   b  of the reflector is reflected upward by the second region  830   b  to transmit through the lens  850 . 
     Examples of the vehicle lamp  800  illustrated in  FIGS. 10B and 10C  differ in the number of light, but are similar in an aspect that the light forming a low-beam pattern and a high-beam pattern undergoes a reflection. In the examples of  FIGS. 10B and 10C , light incident on the shield  840  corresponds to reflections of the light generated by the light source unit  810 . 
     In some implementations, referring to  FIG. 10D , when the light source  822   d  is a laser light source (LD), the light source  822   d  may be formed to emit light in a forward direction. In this case, the light source unit  810  may not include the reflector  830 . 
     In such configurations, the light emitted by the light source  822   d  is directly incident on the shield  840 . As such, in case of  FIG. 10D , the light generated by the light source unit  810  and emitted to the shield  840  corresponds to direct light. 
     Light directly emitted toward an upper end of the shield  840  among the light generated by the light source  822   d  may form a high-beam pattern, and light directly emitted toward a lower end of the shield  840  may form a low-beam pattern. 
     Here, an upper end of the shield  840  may include at least one of a plurality of pixels arranged above the center of the shield, and a lower end of the shield  840  may include at least one of a plurality of pixels arranged below the center of the shield. 
     In some implementations, the processor  870  may control the pixels of a first portion of the plurality of pixels of the shield  840  to block light from passing through when light incident from the light source unit  810  is reflected light. In addition, the processor  870  may control the pixels of a second portion different from the first portion of the plurality of pixels of the shield  840  to block light from passing through when light incident from the light source unit  810  is direct light. 
     For example, when outputting a low-beam, the processor  870  may control the pixels of a first portion (e.g., a lower end portion  1210   a ,  1210   b ) of the plurality of pixels of the shield  840  to block light from passing through when light incident from the light source unit  810  is reflected light as illustrated in  FIGS. 11 and 12 . In this case, the pixels of a second portion (e.g., an upper end portion  1210   c ) of the plurality of pixels of shield  840  may be controlled by processor  870  to allow light to pass through. 
     In case of reflected light, a beam pattern  1200   c  generated through the shield  840  may be vertically inverted or vertically and horizontally inverted with respect to a portion  1210   c  in which a light transmittance (e.g., a light transmittance of 100%) is controlled (set) to allow light to pass through. 
     For example, when light generated by the light source is reflected by an upper reflector (or an upper region of the reflector), the light is projected in a downward direction, and when the light is reflected by a lower reflector (or a lower region of the reflector), the light is projected in an upward direction. 
     Similar principles may be also applied to a case of being horizontally inverted. In the case where the reflector has a hemispherical shape, light generated by the light source is reflected by a left reflector (or a left region of the reflector) and projected in the right direction, and light reflected by a right reflector (or a right region of the reflector) is projected in the left direction. 
     In this specification, as illustrated in  FIG. 12 , an example case is described where a shape of a beam pattern  1200   c  resulting from passing of reflected light through the shield  840  is vertically inverted with respect to a shape of a portion  1210   c  in which the light transmittance (e.g., light transmittance of 100%) is controlled (set) to pass light through the shield  840 . 
     However, depending on a shape of the reflector  830  (or  830   a ,  830   b ), the shape of the beam pattern  1200   c  may be a vertically and horizontally inverted shape with respect to the shape of the portion  1210   c  in which the light transmittance is controlled (set) to pass light through the shield  840 . 
     In case of direct light, the processor  870  may control a second portion (e.g., an upper end portion  1210   c  of the shield  840 ) different from a first portion of a plurality of pixels of the shield  840  to block light from passing through when outputting a low-beam. For example, the pixels of a first portion (e.g., a lower end  1210   a,    1210   b ) of the plurality of pixels of the shield  840  may be controlled by processor  870  to pass light through. 
     In case of direct light, a beam pattern  1200   c  generated through the shield  840  may correspond to a shape of a portion  1210   a ,  1210   b  in which the light transmittance (e.g., light transmittance of 100%) is controlled to allow light to pass through. It is generated by allowing light to directly pass through the shield  840  and then projected by the lens  850  without first reflecting the light using the reflector. Accordingly, the beam pattern  1200   c  is not vertically inverted or vertically and horizontally inverted in case of direct light. 
     To account for the inversion of resulting beam-pattern depending on the presence of a reflector, the processor  870  changes a portion of the plurality of pixels to block light from passing through depending on the type of light incident on the shield  840  from the light source unit  810 . As such, the processor  870  controls the plurality of pixels based on a presence or absence of a reflector. 
     For an example, when light incident on the shield  840  from the light source unit  810  is reflected light (i.e., a reflector is present), the processor  870  may control the light transmittance of pixels included in a first portion of the plurality of pixels to block light from passing through the first portion (e.g., a lower end portion). The first portion may be formed to include a cut-off line of a low-beam pattern. 
     As another example, when light incident on the shield  840  from the light source unit  810  is direct light (i.e., reflector is not present), the processor  870  may control the light transmittance of pixels included in a second portion different from the first portion of the plurality of pixels to block light from passing through the second portion (e.g., an upper end portion). The second portion may also be formed to include a cut-off line of a low-beam pattern. 
     When a high-beam output request is received, the processor  870  may modify at least a part of a portion blocking light from passing through to allow light to pass through. 
     For example, when light incident on the shield  840  from the light source unit  810  is reflected light, the processor  870  may control at least part of a first portion (e.g., lower end portion) of a plurality of pixels of the shield  840  previously set to block light from passing through to allow light to pass through when a high-beam output request is received. 
     As another example, when light incident on the shield  840  from the light source unit  810  is direct light, the processor  870  may control at least a part of a second portion (e.g., upper end portion) of a plurality of pixels of the shield  840  previously set to to block light from passing through to allow light to pass through when a high-beam output request is received. 
     In general, the processor  870  of the present disclosure may independently control the light transmittance of a plurality of pixels included in the shield  840 , thereby controlling the shield  840  to output various beam patterns of light according to circumstance. 
     In some implementations, the processor  870  senses information related to a vehicle using the sensing unit  120  provided in the vehicle. The information related to the vehicle may be at least one of vehicle information, a driving state of the vehicle, or the surrounding information of the vehicle. 
     For example, the vehicle information may include a driving speed of the vehicle, a weight of the vehicle, a number of passengers in the vehicle, a braking force of the vehicle, a maximum braking force of the vehicle, a driving mode of the vehicle (e.g., autonomous driving mode or manual driving mode), a parking mode of the vehicle (e.g., autonomous parting mode, automatic parking mode, manual parking mode), whether or not a user is present on the vehicle, and information associated with the user (e.g., whether or not the user is an authenticated user), and the like. 
     The surrounding information of the vehicle may be a state of road surface on which the vehicle is travelling, weather, a distance from a front-side or a rear-side vehicle, a relative speed of a front-side or a rear-side vehicle, a curvature of a curved driving lane, an ambient brightness of the vehicle, information associated with an object present in a reference region (e.g., predetermined region) based on the vehicle, whether or not an object enters or leaves the predetermined region, whether or not a user is present around the vehicle, and information associated with the user (e.g., whether or not the user is an authenticated user), and the like. 
     Furthermore, the surrounding information, including the surrounding environment information, of the vehicle may include external information of the vehicle (e.g., ambient brightness, a temperature, a position of the sun), nearby subject (e.g., a person, another vehicle, a sign, etc.) information, a type of driving road surface, a landmark, line information, driving lane information, and information required for operation of the vehicle in autonomous driving/autonomous parking/automatic parking/manual parking mode. 
     Furthermore, the surrounding information of the vehicle may further include a distance from an object existing around the vehicle to the vehicle  100 , a type of the object, a parking space for the vehicle, an object for identifying the parking space (e.g., a parking line, a string, another vehicle, a wall, etc.), and the like. 
     Furthermore, information associated with the vehicle may include various modes of operation set by a user input. 
     For example, as illustrated in  FIG. 13A , when a first preset condition is satisfied (e.g., when it is sensed through the sensing unit  120  that the vehicle is traveling on a lane adjacent to a sidewalk, or the vehicle is set to a user attention mode by the user), the processor  870  may control the pixels of a portion associated with the first condition among a plurality of pixels of the shield  840  to block light from passing through to output light corresponding to a first beam pattern corresponding to the first condition. 
     For another example, as illustrated in  FIG. 13B , when a second preset condition different from the first condition is satisfied (e.g., when it is sensed that a current location of the vehicle is a town), the processor  870  may control the pixels of a portion associated with the second condition among a plurality of pixels of the shield  840  to block light from passing through to output light corresponding to a second beam pattern corresponding to the second condition, the second beam different from the first beam pattern. 
       FIGS. 13A, 13B, 13C, 13D, 13E and 13F  illustrate respective beam pattern and light transmittance of a shield when the vehicle is set to a user attention mode, when the vehicle is set to a town mode, when the vehicle is set to a country mode, when the vehicle is set to a light output mode in a specific weather (e.g., snow, rain, etc.), when the vehicle is set to a highway mode, and when the vehicle is set to an object tracking mode in which light is irradiated to a specific object, respectively. The processor  870  may control the shield  840  to vary a portion blocking light from passing through the shield  840  to form a different beam pattern depending on each mode (or preset condition) as illustrated in  FIGS. 13A through 13F . 
     In addition, when it is sensed that another vehicle (i.e., an opposite vehicle) is traveling in a direction opposite to a direction in which the vehicle  100  is traveling, the processor  870  of the vehicle lamp of the present disclosure may control a light transmittance of at least a portion of the shield  840  to block light from passing through. 
     For example, referring to  FIG. 14A , when the light transmittance of the shield  840  is set to output a first beam pattern, another vehicle traveling in an opposite direction may be sensed through the sensing unit  120 . In this case, as illustrated in  FIG. 14B , the processor  870  may control the light transmittance of at least portions  1410   a ,  1410   b  of a plurality of pixels of the shield  840  to block light from being transmitted to regions (space)  1400   a ,  1400   b  where light is projected to the other vehicle. 
     For example, the processor  870  may set the light transmittance of a portion  1410   b  corresponding to a first space to 0% to block light from being projected to the first space at which the driver of the another vehicle is located. 
     As another example, the processor  870  may set the light transmittance of a portion  1410   a  corresponding to a second space to a preset light transmittance of 20% to reduce an intensity, or brightness, of light being projected to the second space corresponding to the region surrounding the other vehicle. 
     Through such a configuration, the vehicle lamp of the present disclosure may implement an antiglare high-beam assist function for preventing light from being projected to an opposite vehicle. 
     In various situations, another vehicle may be travelling in the same direction as the vehicle  100 .  FIG. 14C  illustrates an example of such a situation. Referring to  FIG. 14C , the processor  870  may set the light transmittance of a portion  1410   c  corresponding to a space  1400   c  having a predetermined height to a preset light transmittance (e.g., 20%) to project light to both sides of the vehicle  100  and a space including the predetermined height, and not project light to the other space  1400   d.  For example, the processor  870  may set the light transmittance of the other portion  1410   d  corresponding to the other space  1400   d  to 0% to block light from projecting onto the other space  1400   d.    
     As another example, as illustrated in  FIG. 15A , the processor  870  controls the light transmittance of a first and a second portions  1510 ,  1520  of the shield  840  to block at least part of light incident from the light source unit  810  in an example of a typical driving situation. For example, the light transmittance of pixels belonging to the first portion  1510  may be set to 40%, and the light transmittance of pixels belonging to the second portion  1520  may be set to 0%. 
     In this state, when a specific object (e.g., a person) is sensed within a predetermined distance from the vehicle  100  through the sensing unit  120 , the processor  870  may control the light transmittance of the shield  840  to project light to a first region  1514  and a second region  1524  in space corresponding to the location of the specific object. 
     For example, the processor  870  may change the light transmittance of a sub portion  1512  allowing light projected to the first region  1514  to pass through based on the sensing of the specific object. For example, the light transmittance of the sub portion  1512  may be changed from 40% to 100% to project a large amount of light to the first region  1514 . Here, the first region  1514  may be a space directly containing the sensed object. 
     Furthermore, the processor  870  may change the light transmittance of a sub portion  1522  allowing light projected to the second region  1524  to pass through among pixels belonging to the second portion  1520  based on the sensing of the specific object. For example, the light transmittance of the sub portion  1522  may be changed from 0% to 60% to project to the second region  1524  light of reduced intensity relative to the light projected to the first region  1514 . Here, the first region  1514  in space may be a region surrounding the sensed object. 
     Through such a configuration, the vehicle lamp  800  of the present disclosure may not only output a beam pattern corresponding to an object sensing mode in an optimized manner, but also control an amount of light projected to a surrounding region as well as a space in which the sensed object is directly present, thereby implementing a precise beam pattern. 
     In some implementations, referring back to  FIG. 11 , the processor  870  of the present disclosure may set the light transmittance of an adjacent region (e.g., the first region  842   a ) adjacent both to a region of high light transmittance (e.g., 100%) and a region of low light transmittance (e.g., 0%, 20%) to a preset light transmittance. 
     For example, when the light transmittance of pixels included in a region adjacent to the first region  842   a  is set to 0% to block light from passing through, the processor  870  may set the light transmittance of pixels included in the first region  842   a  to a preset light transmittance (e.g., 50%). 
     Such control of the adjacent region (e.g., first region  842   a ) may provide a vehicle lamp configured to dim or smooth a cut-off line boundary when outputting a low-beam pattern. The described dimming when outputting a low-beam pattern may improve light coverage at an upper end portion of the cut-off line and improve visibility near the cut-off line. 
     In some situations, when a road surface is uneven and an excessive amount of light is projected to a lower end portion of the cut-off line, even a low-beam light may cause glare to the other vehicle traveling in an opposite direction. The dimming of a cut-off line boundary and reduction of an intensity of light around the cut-off line may thereby significantly reduce glare and potentially reduce accident rate. 
     In some implementations, the vehicle lamp  800  of the present disclosure may include a sensing unit  120  that senses information related to the vehicle. 
     The processor  870  may set the light transmittance of the adjacent region to the preset transmittance based on whether the sensed information related to the vehicle satisfies a preset condition. 
     Specifically, when the sensed information related to the vehicle corresponds to a first preset condition, the processor  870  may set the transmittance of the adjacent region to a first light transmittance (e.g., 80%). In addition, when the sensed information related to the vehicle corresponds to a second preset condition different from the first condition, the processor  870  may set the light transmittance of the adjacent region to a second light transmittance (e.g., 60%) different from the first light transmittance. 
     For example, the first preset condition may include a situation that requires or may benefit from a slight dimming of a boundary of the cut-off line of the low-beam pattern. Examples of the first preset condition may include a case where the surrounding brightness of the vehicle lamp  800  (or the vehicle  100 ) is higher than a reference brightness, a case where the vehicle  100  travels a specific road (e.g., a highway), a case where another vehicle traveling in an opposite direction is present within a predetermined distance from the vehicle  100 , a case where the vehicle  100  is traveling on a downhill road, and the like. 
     For another example, the second preset condition may include a situation that requires or may benefit from a further dimming of the boundary of the cut-off line of the low-beam pattern. Examples of the second preset condition may include a case where the surrounding brightness of the vehicle lamp  800  (or the vehicle  100 ) is lower than a reference brightness, a case where the vehicle  100  travels a specific road (e.g., a dirt road, one-way road, etc.), a case where another vehicle traveling in an opposite direction is not present within a predetermined distance from the vehicle  100 , a case where the vehicle  100  is traveling on a uphill road, and the like. 
     In addition to the foregoing examples, the first and second preset conditions may include various other conditions. Furthermore, the first and second conditions may be determined, added, or modified by user input. 
     In some implementations, when information related to the vehicle satisfying the preset conditions (e.g., first and second preset conditions) is not sensed through the sensing unit  120 , the processor  870  may restore the light transmittance of the adjacent region to an original state (e.g., initial light transmittance). 
     For example, the light transmittance of a pixel included in a region (e.g.,  842   a  in  FIG. 11, 1200   b  in  FIG. 12 , or a region adjacent to a line  841  corresponding to a cut-off line) adjacent to a high light transmittance region and a low light transmittance region prior to satisfying a preset condition may be a first value (e.g., 0%). In this state, the light transmittance of the adjacent region  842   a  may be changed to a second value (e.g., 50%) different from the first value under the control of the processor  870  based on the sensing of information related to the vehicle satisfying a preset condition. 
     Then, when information related to the vehicle satisfying the preset condition is no longer sensed (e.g., information or a state related to the vehicle satisfying the preset condition is removed), the processor  870  may restore, or change, the light transmittance of the adjacent region  842   a  from the second value to the first value. 
     In some implementations, the processor  870  of the vehicle lamp  800  may set a portion disallowing light to pass through among a plurality of pixels of the shield  840  to generate a cut-off line at a different position with respect to the vehicle based on information related to the vehicle sensed through the sensing unit  120 . 
     Specifically, when the sensed information related to the vehicle satisfies a first preset condition, the processor  870  may change the light transmittance of a first portion of the plurality of pixels to block light from passing through. In addition, when the sensed information related to the vehicle satisfies a second preset condition different from the first condition, the processor  870  may change the light transmittance of a second portion different from the first portion to allow light to pass through. 
     For example, referring to  FIG. 16A , the first preset condition may include a case where the vehicle has entered an uphill road (or a case where a front surface of the vehicle body is inclined toward an upper side). In this case, the vehicle lamp  800  of the present disclosure may change the light transmittance of a first portion  1600   a  of a plurality of pixels of the shield  840  to block light from passing through so as to project a beam pattern toward the front of the vehicle in a downward direction with respect to the vehicle (i.e., a cut-off line of the beam pattern is lowered). As such, the processor  870  may change the light transmittance of a first portion  1600   a  of the plurality of pixels formed to allow light to pass through to block light from passing through based on the sensing of the first preset condition. 
     For example, during operation of the vehicle on a flat, non-inclined road, the processor  870  may control the light transmittance of a plurality of pixels such that a line corresponding to the cut-off line is present at a first position  841 . 
     Then, when the processor  870  determines that the first preset condition is sensed through the sensing unit  120 , the processor  870  may lower the cut-off line of the beam pattern output in a forward direction. Such lowering of the cut-off line is intended to adjust a light projection direction to a downward direction on an uphill road, thereby providing the driver with a more optimized beam pattern. 
     To this end, the processor  870  may control the light transmittance of the first portion  1600   a  of the plurality of pixels of the shield  840  (specifically, a region adjacent to a region controlled to block light from passing through in a region of a plurality of pixels adjusted to allow light to pass through) to lower the cut-off line of the beam pattern. 
     In case of  FIGS. 16A-16B , a case is illustrated where reflected light is incident on the shield  840  from the light source unit  810 , and a shape of the low-beam pattern is vertically inverted with respect to a region allowing light to pass through. As a result, as a region blocking light from passing through is enlarged toward the top side (or as a region allowing light to pass through decreases toward the top side or a line  841  corresponding to the cut-off line moves upward to a line  841   a ), the cut-off line of the low-beam pattern projected from the vehicle moves downward. 
     The second preset condition may include a case where the vehicle enters a downhill (or a case where a front surface of the vehicle body is inclined downward) as illustrated in  FIG. 16B . In this case, the vehicle lamp  800  of the present disclosure may change the light transmittance of a second portion  1600   b  of the plurality of pixels of the shield  840  to project a beam pattern toward the front of the vehicle in an upward direction with respect to the vehicle  100 . As such, the processor  870  may control the light transmittance of the second portion  1600   b  initially set to block light from passing through to allow light to pass through the second portion  1600   b , based on a determination that the second preset condition is satisfied. 
     In some implementations, the processor  870  may control the light transmittance of a plurality of pixels to lower the line  841  corresponding to the cut-off line in a downward direction, to a line  841   b.    
     In this case, as illustrated in  FIGS. 16A-16B , a case is illustrated where reflected light is incident on the shield  840  from the light source unit  810 , and a shape of the low-beam pattern is vertically inverted with respect to a region allowing light to pass through. As a result, as a region blocking light from passing through is reduced toward the bottom side (or as a region allowing light to pass through increases toward the bottom side) or a line  841  corresponding to the cut-off line moves downward to the line  841   b , the cut-off line of the low-beam pattern moves upward. 
     Then, when the first preset condition or second condition is no longer sensed, the processor  870  may control the light transmittance of the plurality of pixels to restore the line  841  corresponding to the cut-off line to an original state. 
     Such control of the cut-off line may provide a vehicle lamp configured to change a position of the cut-off line in an optimized manner. 
     The present disclosure may form a low-beam pattern without having a separate shield for generating a cut-off line using the shield  840  in which a plurality of pixels are formed in a matrix shape to independently control the light transmittance in an individual manner. In addition, the present disclosure may control the light transmittance of a plurality of pixels included in the shield  840  to generate an optimized beam pattern according to the situation, thereby implementing a smart lamp. 
     Hereinafter, a vehicle lamp according to another implementation of the present disclosure will be described. 
       FIG. 17  illustrates an exploded view of another example of a vehicle lamp according to some implementations disclosed herein and  FIGS. 18A-19B  illustrate diagrams of the high-beam and low-beam operations of the vehicle lamp illustrated in  FIG. 17 . 
     Referring to  FIG. 17 , a vehicle lamp  800  according to some implementations of the present disclosure may include a light source unit  810  including at least one light source  822 , a shield portion including a first shield  845  located forward of the light source unit  810  to form a shield pattern and a second shield  840  configured to change a light transmittance thereof to vary a beam pattern, a drive unit  847  configured to drive the shield portion, and at least one processor, such as a processor  870  configured to control at least one of the shield portion and the driver unit  847  when changing a beam pattern. 
     The drive unit  847  may be configured to drive a first shield  845  configured to form a predetermined beam pattern on the shield portion. The second shield  840  may be configured to change the light transmittance so as to vary the beam pattern. 
     The description of the lens  850 , the first case  802 , and the second case  803  is similar to their foregoing description in reference to  FIG. 8 . 
     The shield portion including the first shield  845  and the second shield  840  may be disposed between the light source unit  810  and the lens  850 . For example, the shield portion  840  may be disposed between the light source unit  810  and the lens  850  to block at least a part of the light generated by the light source unit  810  and allow the remaining light to be pass through and reach the lens  850 . 
     The first shield  845  may be configured and used for generating a cut-off line of a low-beam pattern without varying the light transmittance of the second shield  840 . Here, the first shield  845  is a fixed-shape, fixed-transmittance type shield, and differs from the second shield  840  in that the light transmittance is not variable. The first shield  845  may be formed in various shapes. 
     When light output from the light source  822  is reflected by the reflector  830  and directed toward the first shield  845 , a part of the light is blocked by the first shield  845 . Then, the remaining light is received by the lens  850  and transmitted to the outside without being blocked by the first shield  845 . 
     Through this, the present disclosure shields part of light by the first shield  845  and projects the remaining light to the outside. Here, since the first shield  845  is a shield having a fixed, non-modifiable, shape, it may consistently block the light at the same portion, and thus the present disclosure may output a fixed beam pattern (i.e., a fixed low-beam pattern). 
     The second shield  840  may be provided by the shield  840  illustrated in  FIGS. 8 through 16 . For example, the second shield  840  may include a plurality of pixels, and may be formed to independently control the light transmittance of each pixel. 
     In addition, the plurality of pixels may be arranged in a matrix form. Furthermore, each of the pixels may be formed to partially vary the light transmittance (e.g., in some implementations, the light transmittance of a first portion of each pixel has a first value, and the light transmittance of a second portion different from the first portion has a second value different from the first value). 
     The processor  870  of the present disclosure may independently, or individually, control the plurality of pixels included in the second shield  840 . In addition, the processor  870  may individually control the plurality of pixels, to partially vary the light transmittance of each of the plurality of pixels (e.g., in some implementations, the light transmittance of a first portion of each pixel has a first value, and the light transmittance of a second portion different from the first portion has a second value different from the first value). 
     In some implementations, the shield portion may include a rotatable body  846 . The body  846  formed to be rotatable may be formed in a shape of a cylindrical rod. For example, the body  846  may be inserted into a groove provided in the second case  803  and rotated by driving the drive unit. 
     Grooves on which the body  846  can be mounted may be provided on the second case  803 . For example, a groove may be provided at a left or right side of the second case  803  relative to a reference plane that vertically crosses the center of the second case  803 . 
     The body  846  may be inserted into the groove, and thus the body  846  may be positioned to cross the center of an inner space of the second case  803  in a width direction. Here, the width direction may be a horizontal direction or the width direction of the vehicle. 
     The rotatable body  846  may be coupled to the drive unit  847  configured to rotate the body  846  with respect to an axis passing through the body  846  along a length direction of the body  846  (e.g., the width direction as illustrated in  FIG. 17 ). 
     The drive unit  847  may include a first gear  847   a  coupled to the body  846 , a second gear  847   b  formed to be engaged with the first gear  847   a , and an actuator  847   c  coupled to the second gear  847   b  and formed to rotate the second gear  847   b  as illustrated in  FIG. 17 . 
       FIG. 17  illustrates a structure in which the first gear  847   a  is rotated by the second gear  847   b , but the present disclosure is not limited thereto. In some implementations, the drive unit of the present disclosure may be formed such that the actuator  847   c  is directly coupled to the first gear  847   a  to rotate the first gear  847   a  (i.e., the second gear  847   b  can be omitted). 
     The drive unit  847  may be driven under the control of the processor  870 . Furthermore, as illustrated in  FIG. 17 , the drive unit  847  may be disposed in an inner space of the second case  803 , but may alternatively be disposed outside of the second case  803  or be integrally formed with the second case  803 . 
     In some implementations, the shield portion may include a first shield  845  provided at a first side of the rotatable body  846  and a second shield  840  provided at the other side opposite to the first side. 
     For example, referring to  FIG. 18A , the first shield  845  and the second shield  840  may be disposed opposite to each other with respect to the rotatable body  846 . In some implementations, the first shield  845  and the second shield  840  may be arranged at a 180 degree angle about the body  846 . One side herein may be a lower surface of the body  846 , and the other side may be an upper surface of the body  846 , for an example. 
     In some implementations, the first shield  845  and the second shield  840  may be coupled to the first body and the second body, respectively, which are independently rotatable. In some implementations, the first body and the second body may be integrally formed. In some implementations, the first body and the second body may be disposed on different axes. For example, the first body and the second body may be spaced apart and arranged to be parallel to each other to provide the different axes of the first body and the second body. Then, the first shield  845  may be coupled to the first body, and the second shield  840  may be coupled to the second body. 
     Referring to  FIG. 18B , the processor  870  may control the drive unit  847  to rotate the body  846  on which the first shield  845  and the second shield  840  are mounted. 
     By rotating the body  846 , the first shield  845  and the second shield  840  may be rotated with respect to the body  846 . 
     Accordingly, referring to  FIG. 18C , the positions of the first shield  845  and the second shield  840  may be changed. For example, the relative orientation of the first shield  845  and the second shield  840  may be vertically inverted with respect to the configuration illustrated in  FIG. 18A . 
     Referring to  FIG. 19A , the light source unit  810  included in the vehicle lamp  800  of the present disclosure may include a first light source  822   a  that emits light in an upward direction, a second light source  822   b  that emits light in a downward direction, and a reflector  830  that reflects light output from the first and second light sources  822   a ,  822   b  in a forward direction (toward the shield portion or toward the lens  850 ). 
     As described above, light output from the first light source  822   a  formed to output light in an upward direction is reflected by an upper reflector (or a first reflector or an upper region of the reflector)  830   a  to travel in a forward downward direction. As a result, the first light source  822   a  and the upper reflector  830   a  may form a low-beam pattern. 
     Similarly, light output from the second light source  822   b  formed to output light in a downward direction is reflected by a lower reflector (or a second reflector or a lower region of the reflector)  830   b  to travel in a forward upward direction. As a result, the second light source  822   b  and the lower reflector may form a high-beam pattern. 
     In summary, light output from the first light source  822   a  may be reflected by the reflector  830  (upper reflector  830   a ), and then passed through the shield portion to form a low-beam pattern. Similarly, light output from the second light source  822   b  may be reflected by the reflector  830  (lower reflector  830   b ), and then passed through the shield portion to form a high-beam pattern. 
     At this time, light (l) output by the first light source  822   a  and reflected by the upper reflector (or an upper region of the reflector) may be directed (incident) along a path located above the body  846 , or the center of the shield portion. In this configuration, the resulting projection direction of the light (l) may be a forward downward direction as illustrated in  FIG. 19A . 
     Furthermore, light (h) output from the second light source  822   b  and reflected by the lower reflector (or a lower region of the reflector) may be directed along a path located below the body  846 , or the center of the shield portion. At this time, the projection direction of the light (h) may be a forward upward direction as illustrated in  FIG. 19B . 
       FIG. 19A  illustrates a front view of the vehicle lamp  800  configured to output a low-beam and a cross-sectional view taken along line B-B when configured to output a low-beam, and  FIG. 19B  illustrates a front view illustrating the vehicle lamp  800  when configured to output a high-beam and a cross-sectional view taken along line B-B when configured to output a high-beam. 
     Referring to  FIG. 19A , the processor  870  may control the drive unit  847  such that the first shield  845  is disposed at a lower side with respect to the rotatable body  846  and the second shield  840  is disposed at an upper side with respect to the body  846  when outputting a low-beam. 
     Accordingly, the light (l) output by the first light source  822   a  and reflected by the upper reflector  830   a  (or an upper region of the reflector) is incident on the second shield  840  of the shield portion (e.g., a matrix shield configured to vary the light transmittance thereof). 
     In some implementations, the processor  870  may control the light transmittance of at least part of the plurality of pixels included in the second shield  840  when outputting a low-beam to form a low-beam pattern. 
     For example, the processor  870  may set the light transmittance of at least part of the plurality of pixels (e.g., part of pixels forming the line  841  corresponding to a cut-off line) to 0% (or some value less than 100%) as illustrated in  FIG. 11  to form a low-beam pattern having the cut-off line using the light (l) incident on the second shield  840 . 
     In general, the processor  870  may control the light transmittance of at least part of the plurality of pixels included in the second shield  840  to form various low-beam patterns based on information related to the vehicle sensed through the sensing unit  120  as described in relation to  FIGS. 8 through 17 . 
     Furthermore, as illustrated in  FIG. 19A , the second light source  822   b  is controlled by the processor  870  to not emit light when outputting a low-beam. In some implementations, since light generated by the second light source  822   b  forms a high-beam pattern, the processor  870  may turn off the second light source  822   b  when outputting a low-beam. 
     In some implementations, referring to  FIG. 19B , when outputting a high-beam, the processor  870  may control the drive unit  847  such that the first shield  845  is disposed at an upper side of the rotatable body  846 , and the second shield  840  is disposed at a lower side of the body  846 . 
     When outputting a high-beam, the processor  870  may turn on both the first light source  822   a  and the second light source  822   b  or turn on only the second light source  822   b.    
     When outputting a high-beam, the first shield  845  (e.g., fixed shield) may be disposed at an upper side with respect to the body  846 , or the center of the shield portion, such that light (l) output by the first light source  822   a  and reflected by the upper reflector forms a predetermined beam pattern (low-beam pattern) having a cut-off line. 
     In addition, when outputting a high-beam, the second shield  840  (matrix shield) may be disposed at a lower side with respect to the body  846 , or the center of the shield portion, such that light (h) output by the second light source  822   b  and reflected by the lower reflector forms various beam patterns (e.g., high-beam patterns). To this end, the processor  870  places the second shield  840  (matrix shield) below the body  846  to vary the high-beam pattern when outputting a high-beam. Furthermore, when outputting a high-beam, the processor  870  may control the light transmittance of at least a part of the plurality of pixels included in the second shield  840  to vary a high-beam pattern, as described in relation to  FIGS. 13A through 16B . 
     Through such a configuration, according to the present disclosure, the second shield  840  may be disposed in a path through which light (l) forming a low-beam pattern passes when outputting a low-beam, and the second shield  840  may be disposed in a path through which light (h) forming a high-beam pattern passes when outputting a high-beam, thereby providing a vehicle lamp configured to form various beam patterns. 
     Foregoing description of the vehicle lamp  800  described rotating or moving both the first shield  845  and the second shield  840 , for example as a single object. However, in general, the first shield  845  and the second shield  840  may be moved in an independent manner. 
       FIGS. 20A-21B  illustrate diagrams of various implementations of the vehicle lamp illustrated in  FIG. 17 . 
     In some implementations, the shield portion of the present disclosure may be formed in such a manner that the first shield  845  and the second shield  840  can rotate independently with respect to the rotatable body  846 . 
     For example, the body  846  may include a rotatable first body and a rotatable second body. Furthermore, the drive unit  847  may include a first drive unit for rotating the first body and a second drive unit for rotating the second body. 
     The first shield  845  may be coupled to the first body, and the second shield  840  may be coupled to the second body. 
     The processor  870  may control the first drive unit of the drive unit to rotate the first shield  845  and the second drive unit of the drive unit to rotate the second shield  840 . 
     As illustrated in  FIGS. 20A and 20B , the first shield  845  may be coupled to the first body  846  and disposed on an upper side thereof, and the second shield  840  may be coupled to the second body  846   a  and configured to be rotatable about the second body  846   a.    
     In such a configuration, the processor  870 , for example, may control the drive unit  847  to drive the shield portion such that the first shield  845  and the second shield  840  are positioned at an upper side with respect to the rotatable body  846  and oriented in an upward direction. 
       FIG. 21A  illustrates a front view of the vehicle lamp  800  when configured to output a low-beam and a cross-sectional view taken along line D-D.  FIG. 21B  illustrates a front view of the vehicle lamp  800  configured to output a high-beam and a cross-sectional view taken along line E-E. 
     Referring to  FIG. 21A , the processor  870  of the vehicle lamp may control the drive unit in such a manner that the first shield  845  (e.g., fixed shield) is disposed at an upper side with respect to the body  846   a , and the second shield  840  (e.g., matrix shield) is disposed at an upper side with respect to the body  846   a  to overlap with the first shield  845 . 
     In such a configuration, light (l) output by the first light source  822   a  and reflected by the upper reflector (or an upper region of the reflector) may be incident on the shield portion (i.e., an upper portion with respect to the body  846   a  or the center of the shield portion) in which the first shield  845  overlaps with the second shield  840 . 
     In this configuration, a low-beam pattern formed when outputting a low-beam may include a cut-off line formed by the first shield  845 , and an intensity of at least a part of the output light may be varied by the second shield  840  (e.g., matrix shield). 
     For example, the processor  870  may control the drive unit  847  such that the first shield  845  and the second shield  840  are disposed at an upper side with respect to the body  846   a  when outputting a low-beam. 
     Then, light (l) generated by the first light source  822   a  and reflected by the upper reflector may be partially blocked by the first shield  845  to form a cut-off line of the low-beam pattern. Furthermore, the processor  870  may control the light transmittance of at least part of the plurality of pixels of the second shield  840  to control an amount of light passing through the second shield  840  of the reflected light (l). 
     In this configuration, the processor  870  does not need to control the light transmittance (e.g., set to 0% or a low value) of a portion of the second shield  840  that overlaps with the first shield  845 . Such is the case, as instead of controlling the light transmittance of at least part of the plurality of pixels in order to form a cut-off line of the low-beam pattern as done in the related art, the first shield  845  overlapping with the second shield  840  generates a cut-off line of the low-beam pattern. By use of such a configuration, the vehicle lamp  800  may be controlled to modify the low-beam pattern beyond the predetermined beam pattern of the first shield  845  and implement various beam patterns such as those shown in  FIGS. 13A through 16B . 
     Accordingly, the first shield  845  (e.g., fixed shield) forming a predetermined beam pattern and the second shield  840  (e.g., matrix shield or display shield) varying a beam pattern may be disposed to overlap with each other along a path of light generated by the light source unit  810 , thereby enabling more precise control over a low-beam pattern. 
     Furthermore, when outputting a low-beam, controlling the light transmittance of the pixels of the second shield  840  overlapping with the first shield  845  may not be required, thereby saving power consumption. 
     On the other hand, as illustrated in  FIG. 21B , when outputting a high-beam, the processor  870  may control the shield portion such that the second shield disposed at an upper side to overlap with the first shield  845  as configured in  FIG. 21A  is now disposed at a lower side with respect to the body  846   a.    
     For example, the processor  870  may control the second drive unit to drive the second body coupled to the second shield  840  in such a manner that the second shield  840  is moved to be disposed at a lower side with respect to the body  846   a.  The first shield  845  may be maintained at the upper side with respect to the body  846   a  to maintain a low-beam pattern. In this configuration, the light output by the second light source  822   b  and reflected by the lower reflector (or a lower region of the reflector) may be incident on the second shield  840  disposed at a lower side with respect to the body  846   a  when outputting a high-beam. 
     Then, the processor  870  may control the light transmittance of the second shield  840  disposed at a lower side of the body  846   a  to vary a high-beam pattern in various manners, e.g., as described in relation to  FIGS. 13A through 16B . 
     On the other hand, a vehicle lamp according to some implementations of the present disclosure may provide a vehicle lamp configured to independently control light transmittances of pixels of a shield to change a beam pattern in various ways, and additionally provide a vehicle lamp configured to enhance an intensity of light projected in a low-beam pattern or enhancing an intensity of light projected in a high-beam pattern. 
       FIG. 22  illustrates an exploded view of an example of a vehicle lamp according to some implementations disclosed herein; and  FIGS. 23A-24B  illustrate high-beam and low-beam operations of the vehicle lamp illustrated in  FIG. 22 . 
     Referring to  FIG. 22 , a vehicle lamp  800  according to another implementation of the present disclosure may include an optical module  820  that includes at least one light source  822 , a first reflector  830  configured to reflect light generated by the optical module  820 , a shield  840  configured to block a part of the light reflected by the first reflector  830  to form a beam pattern, and a lens  850  configured to project the light transmitted by the shield (e.g., by not blocking) to the outside. Furthermore, the vehicle lamp  800  of the present disclosure may include a second reflector  848  configured to reflect the light reflected by the first reflector  830  back toward the first reflector  830  or reflect the light generated by the optical module  820  such that the light reaches the lens  850 . 
     The optical module  820  may be configured to emit light in an upward, downward, or backward direction. 
     The first reflector  830  may be formed to reflect light emitted in an upward, downward or backward direction by the optical module  820  and project the light toward the front of the vehicle lamp  800  (e.g., toward the shield  840 , toward the second reflector  848  or toward the lens  850 ). 
     For example, the optical module  820  may be centrally disposed at an interior space of the first reflector  830 . In some implementations, the light source  822  may be disposed forward (e.g., further toward the lens  850 ) with respect to a rear end of the first reflector  830 . 
     The shield  840  may be a matrix shield or display shield as described above. For example, the shield  840  may be the shield  840  as illustrated in  FIGS. 8 through 16B . In some implementations, the shield  840  may include a plurality of pixels, and configured to independently control the light transmittance of each pixel. 
     In addition, the plurality of pixels may be arranged in a matrix form. Furthermore, each of the pixels may be formed to partially vary the light transmittance (e.g., in some implementations, the light transmittance of a first portion of each pixel has a first value, and the light transmittance of a second portion different from the first portion has a second value different from the first value). 
     The processor  870  may independently, or individually, control a plurality of pixels included in the shield  840 . In addition, the processor  870  may control the plurality of pixels, respectively, to partially vary the light transmittance for each of the plurality of pixels (e.g., in some implementations, the light transmittance of a first portion of each pixel has a first value, and the light transmittance of a second portion different from the first portion has a second value different from the first value). 
     Referring back to  FIG. 22 , the light generated by the optical module  820 , reflected by the first reflector  830 , and then transmitted by the shield  840  (i.e., light not blocked by the shield  840 ) propagates through the lens  850  to form a predetermined beam pattern. For example, the shield  840  may be disposed forward of the optical module  820  and the first reflector  830  to form the predetermined beam pattern. 
     In some implementations, the vehicle lamp  800  may include a body  846  formed to be rotatable. For example, the body  846  may be an axial shaft that rotates around an axis passing lengthwise through the body  846 . A second reflector  848  configured to reflect the light reflected by the first reflector  830  back toward the first reflector  830  may be coupled to the body  846 . 
     As illustrated in  FIG. 22 , the body  846  formed to be rotatable may be formed in a shape of a cylindrical rod. 
     As illustrated in  FIG. 17 , the body  846  may be inserted into a groove provided in the second case  803  and rotated by driving the drive unit. 
     Grooves on which the body  846  can be mounted may be provided on the second case  803 . For example, a groove may be provided at a left or right side of the second case  803  relative to a reference plane that vertically crosses the center of the second case  803 . 
     The body  846  may be inserted into the groove, and thus the body  846  may be positioned to cross the center of an inner space of the second case  803  in a width direction. Here, the width direction may be a horizontal direction. 
     The rotatable body  846  may be coupled to the drive unit  847  configured to rotate the body  846  with respect to an axis passing through the body  846  along a length direction of the body  846  (e.g., the width direction as illustrated in  FIG. 22 ). 
     The drive unit  847  may include a first gear  847   a  coupled to the body  846 , a second gear  847   b  formed to be engaged with the first gear  847   a , and an actuator  847   c  coupled to the second gear  847   b  and formed to rotate the second gear  847   b  as illustrated in  FIG. 22 . 
       FIG. 22  illustrates a structure in which the first gear  847   a  is rotated by the second gear  847   b , but the present disclosure is not limited thereto. In some implementations, the drive unit of the present disclosure may be formed such that the actuator  847   c  is directly coupled to the first gear  847   a  to rotate the first gear  847   a  (i.e., the second gear  847   b  can be omitted). 
     The drive unit  847  may be driven under the control of the processor  870 . Furthermore, as illustrated in  FIG. 22 , the drive unit  847  may be disposed in an inner space of the second case  803 , but may alternatively be disposed outside of the second case  803  or be integrally formed with the second case  803 . 
     For example, the second reflector  848  may be coupled to the body  846 . Then, the second reflector  848  may be rotated with respect to an axis passing through the body  846  along a length direction of the body  846  (e.g., the width direction as illustrated in  FIG. 22 ). The processor  870  may control the drive unit  847  coupled to the body  846  to rotate the second reflector  848  with respect to the axis passing through the body  846 . 
     In some implementations, the shield  840  may be coupled to an upper portion of the second case  803 . For example, the shield  840  may be disposed to be in contact with an upward-facing surface or portion of the body  846 . 
     However, the shield  840  and the body  846  may not be coupled to each other. In such scenarios, the shield  840  does not rotate when the body  846  is rotated with respect to its axis by the driving of the drive unit  847 . 
     For example, the shield  840  and the second reflector  848  may be in contact with each other, but when the body  846  is rotated, the second reflector  848  rotates about an axis of the body  846 , or the body  846 , while the shield  840  remains stationary without rotating. 
     The description of the lens  850 , the first case  802 , and the second case  803  is similar to their foregoing description in reference to  FIG. 8 . 
     The lens  850  may be disposed forward of the shield  840  and the second reflector  848 . 
     In some implementations, the first reflector  830  is disposed behind the optical module  820  at a predetermined distance from the optical module  820  to reflect light generated by the optical module  820  in a forward direction, a shield  840  is disposed forward of the first reflector  830  and the optical module  820 , and a lens  850  is disposed forward of the shield  840 . 
     In addition, the second reflector  848  may be provided below the shield  840  and formed to be rotatable with respect to an axis in contact with the shield  840 . For example, the second reflector  848  may be formed to be rotatable about an axis (e.g., the body  846 ), and be disposed at different positions when outputting a low-beam and outputting a high-beam. To this end, the processor  870  may control the drive unit  847  for driving the body  846  coupled to the second reflector  848  such that the second reflector  848  is disposed at a different position when outputting a low-beam and outputting a high-beam, respectively. 
     In some implementations, the second reflector  848  may be disposed at a first position when outputting a low-beam and at a second position different from the first position when outputting a high-beam. 
     For example, referring to  FIG. 23A , the processor  870  may control the drive unit such that the second reflector  848  is disposed at a lower side with respect to an axis (e.g., the body  846 ). In this case, from a front viewpoint of the vehicle lamp, a part of the first reflector  830  located at the lower side of the axis may be hidden by the second reflector  848 . In this situation, when outputting a low-beam, the second reflector  848  may be visible below the one axis from the front viewpoint of the vehicle lamp. 
     Referring to  FIG. 23B , when outputting a high-beam, the processor  870  may control the drive unit  847  such that the second reflector  848  is oriented in a horizontal position with respect to the axis (e.g., the body  846 ). 
     Referring to  FIG. 23C , when the vehicle lamp is viewed from the front viewpoint of the vehicle lamp while configured as illustrated in  FIG. 23B , the first reflector  830  may be visible below the axis. In contrast, at least a part of the second reflector  848  may not be visible from the front viewpoint as it is disposed at the second position (e.g., horizontal position with respect to the axis) different from the first position when outputting a high-beam. 
       FIG. 24A  illustrates a front view of a vehicle lamp when outputting a low-beam and a cross-sectional view taken along a line F-F, and  FIG. 24B  illustrates a front view of a vehicle lamp when outputting a high-beam and a cross-sectional view taken along a line G-G. 
     Referring to  FIG. 24A , the second reflector  848  may be disposed at the first position (e.g., horizontal position with respect to the axis) when outputting a low-beam. The vehicle lamp of as illustrated in  FIG. 24A  may be provided with one light source  822 , and the light source  822  may be formed to emit light toward a backward direction. 
     The first reflector  830  may reflect light generated by the light source  822  toward the front side of the vehicle lamp. For example, the light reflected by an upper region  830   a  of the first reflector  830  may be projected in a downward forward direction to form a low-beam pattern. In addition, light reflected by the lower region  830   b  of the first reflector  830  may be projected in an upward forward direction to form a high-beam pattern as shown in  FIG. 24B . 
     The second reflector  848  may be disposed at a first position to reflect light reflected by the first reflector  830  (e.g., the lower region  830   b  of the first reflector  830 ) back toward the first reflector  830  when outputting a low-beam as illustrated in  FIG. 24A . 
     An example of a path taken by light (T 1 ) as it is reflected by the first reflector  830  and the second reflector  848  is shown. The light (T 1 ) is first emitted by the light source  822  in a downward backward direction, and is then reflected by the first reflector  830  (e.g., the lower region  830   b  of the first reflector). Then, the light (T 1 ) is directed in a downward forward direction toward the second reflector  848 , which then reflects the light (T 1 ) back toward the first reflector (e.g., the upper region  830   a  of the first reflector). 
     To this end, the processor  870  may control the drive unit  847  to move the second reflector  848  to the first position where light reflected from the lower region  830   b  of the first reflector is reflected back to the upper region  830   a  of the first reflector when outputting a low-beam. 
     Then, light reflected back to the first reflector (e.g., light reflected back to the upper region  830   a  of the first reflector) may pass through the shield  840  to enhance light with a low-beam pattern. 
     As such, the second reflector  848  is disposed at a lower side with respect to one axis (the body  846 ) to reflect light reflected from the lower region  830   b  of the first reflector back toward the upper region  830   a  of the first reflector, and accordingly, an intensity of light projected in a low-beam pattern may be enhanced. 
     In some implementations, the processor  870  may adjust the first position of the second reflector  848  to adjust a portion of the low-beam pattern where the intensity of light is enhanced. 
     In addition, the processor  870  may control the light transmittance of at least part of the plurality of pixels included in the shield  840  when outputting a low-beam, to form a low-beam pattern including a cut-off line and various low-beam patterns as illustrated in  FIGS. 13A through 16B . 
     In some implementations, the second reflector  848  may have a concave shape as illustrated in  FIGS. 24A and 24B  to concentrate light reflected from the lower region  830   b  of the first reflector and reflect it back to the upper region  830   a  of the first reflector. Other examples of the shape of the second reflector  848  include a bent shape, and a curved shape. 
     Referring to  FIG. 24B , when outputting a high-beam, the second reflector  848  may be disposed at a second position different from the first position such that the light reflected by the first reflector  830  does not see the second reflector  848 . 
     For example, when outputting a high-beam, the processor  870  may control the second reflector  848  to be disposed at a second position different from the first position in such a manner that light reflected from the lower region  830   b  of the first reflector to the lens  850  propagates directly to the lens  850  without being reflected back by the second reflector  848 . 
     For example, the second position may be a position at which the second reflector  848  does not fall on a path of the light generated by the light source  822  and reflected by the lower region  830   b  of the first reflector  830 . 
     Through such a configuration, a low-beam and a high-beam may be provided using one light source. 
     On the other hand, a vehicle lamp related to the present disclosure may include a structure configured to enhance a low-beam as well as a high-beam. 
       FIGS. 25A-25B  illustrate diagrams of another implementation of the vehicle lamp illustrated in  FIG. 22 . 
     Referring to  FIG. 25A , a light source included in the vehicle lamp may further include an auxiliary light source  824  disposed at a lower side of a shield  890 . The auxiliary light source  824  may be, for example, a halogen light source, an LED light source, an LD light source or the like. 
     The shield  890  may be provided by the shield  840  formed to change the light transmittance described above, or by a physically fixed shield  845 . 
     The light source  822  may be formed to emit light toward the first reflector  830  as described above. 
     Furthermore, the auxiliary light source  824  may be spaced apart from a lower side of the shield  890 , and the second reflector  848  may be disposed adjacent to the auxiliary light source  824 . 
     The second reflector  848  may be configured to rotate with respect to an axis (A 1 ) (or a separate body formed along the axis (A 1 )) or rotationally move at a predetermined distance from the axis. 
       FIG. 25A  is a cross-sectional view of the vehicle lamp when configured to output a low-beam, and  FIG. 25B  is a cross-sectional view of the vehicle lamp when configured to output a high-beam. 
     Light generated by the auxiliary light source  824  may be reflected toward the lens  850  by the second reflector  848  disposed at a first position as illustrated in  FIG. 25A . The light generated by the auxiliary light source  824  may enhance the low-beam pattern. 
     Specifically, the auxiliary light source  824  may be disposed at a lower side of the shield  890  (i.e., below the shield  890 ), and formed to emit light toward the shield  890 , (i.e., in an upward direction). 
     The second reflector  848  may be disposed at a first position to enhance an intensity of light of the low-beam pattern. At the first position, the light generated by the auxiliary light source  824  is directly directed toward a lower end portion of the lens  850 . For example, the first position may correspond to a position of the second reflector  848  such that it falls between the auxiliary light source  824  and the shield  890 . 
     In some implementations, the shield  890  may include a through hole  892  through which at least one of light reflected from the first reflector  830  (e.g., the lower portion  830   b  of the first reflector) or light generated by the auxiliary light source  824  is transmitted. Furthermore, light  2500   b  generated by the light source  822  and reflected by the first reflector  830  (e.g., the lower region  830   b  of the first reflector) may pass through the through hole  892  to form a high-beam pattern. Additionally, a reflective member  896  may be provided along at least a part of an interior region of the through hole  892 . 
     Referring to  FIG. 25B , when outputting a high-beam, the second reflector  848  may be disposed at a second position different from the first position such that light generated by the auxiliary light source  824  is incident on the reflective member  896 . Furthermore, light  2500   c ′ generated by the auxiliary light source  824  may be reflected by the reflective member  896  to enhance an intensity of light of the high-beam pattern. 
     For example, the second reflector  848  may be disposed at the second position when outputting a high-beam so that light  2500   b  reflected from the first reflector (specifically, the lower end region  830   b  of the first reflector) is not blocked by the second reflector  848 , and is directed toward the through hole  892 . 
     For example, the second position of the second reflector  848  for outputting a high-beam denotes a position where light generated by the light source  822 , reflected by the lower region  830   b  of the reflector, and directed toward the through hole  892  of the shield  890  is not blocked. As another example, the second position where the second reflector  848  is located when outputting a high-beam may denote a position where light generated by the auxiliary light source  824  is not reflected or blocked by the second reflector  848 , and directed toward the shield  890 . 
     To this end, the processor  870  may control the drive unit  847  to move the second reflector  848  from the first position for outputting a low-beam to the second position different from the first position for outputting a high-beam. 
     Here, the second reflector  848  may be coupled to a separate body along the axis (A 1 ) to rotate or rotationally move with respect to the axis (A 1 ) passing through a length direction of the separate body. 
     The auxiliary light source may be independently turned on or off when outputting a high-beam. For example, the processor  870  may turn on or off the auxiliary light source  824  when outputting a high-beam. 
     The drive unit  847  may be formed to drive the separate body. 
     In some implementations, the second reflector  848  may be configured to perform a dual role as a reflector and a shield. When configured to output a low-beam, the second reflector  848  may be disposed at the first position as illustrated in  FIG. 25A  to block light  2500   b  reflected by the first reflector  830  (e.g., the lower region  830   b  of the first reflector) from reaching the through hole  892 . The reflector  848  disposed at the first position reflects the light generated by the auxiliary light source  824  to enhance the low-beam pattern. 
     To this end, a reflective member may be formed on one surface (e.g., a surface facing the auxiliary light source  824 ) of the second reflector  848 , and a reflective member may not be formed on the other surface opposite to the one surface of the second reflector  848  (e.g., a surface facing the light source  822 ). 
     According to the structure of  FIGS. 25A and 25B , a cut-off line of the low-beam pattern may be formed by an end portion  894  of the shield  890 . For example, the end portion  894  of the shield  890  may denote a part opposite to a portion provided with the reflective member  896  of the through hole  892 . A portion of reflected light generated by the light source  822  and reflected by the upper region  830   a  of the first reflector is blocked by the end portion  894  of the shield  890  and the remaining portion is incident on the lens  850  through the shield  890 . Through such a configuration, the present disclosure may form a low-beam pattern. 
     In summary, according to the vehicle lamp of the present disclosure, when outputting a low-beam, as illustrated in  FIG. 25A , the second reflector  848  may be disposed at the first position to directly reflect light generated by the auxiliary light source  824  toward a lower end portion of the lens  850 . Through this, an intensity of light of the low-beam pattern may be enhanced using the light generated by the auxiliary light source. 
     Furthermore, when the second reflector  848  is disposed at the first position as illustrated in  FIG. 25A , light generated by the light source  822  and reflected by the lower region  830   b  of the first reflector is blocked by the second reflector  848  and thus not directed to the through hole  892  of the shield  890 . Through this, formation of a high-beam pattern may be prevented when outputting a low-beam. 
     Furthermore, when the second reflector  848  is disposed at the first position as illustrated in  FIG. 25A , light generated by the auxiliary light source  824  is not directed to the through hole  892  and reflective member  896  of the shield  890  located above the auxiliary light source  824 , and thus a high-beam pattern is not formed. 
     Furthermore, for the vehicle lamp of the present disclosure, as illustrated in  FIG. 25B , when outputting a high-beam, the second reflector  848  may be disposed at the second position to enable the light generated by the auxiliary light source  824  to be directly emitted toward the through hole  892  and reflective member  896  of the shield  890 . 
     Furthermore, when the second reflector  848  is disposed at the second position as illustrated in  FIG. 25B , the light generated by the light source  822  and reflected by the lower region  830   b  of the first reflector passes through the through hole  892  of the shield  890  without being blocked by the second reflector  848  to form a high-beam pattern. 
     Furthermore, when the second reflector  848  is disposed at the second position as illustrated in  FIG. 25B , light emitted from the auxiliary light source  824  is not directly reflected toward the lens  850  by the second reflector  848 , but reflected by the reflective member  896  formed on the through hole  892  of the shield  890  to enhance an intensity of light of the high-beam pattern. 
       FIGS. 26A-27B  illustrate diagrams of yet another implementation of the vehicle lamp illustrated in  FIG. 22 . 
       FIG. 26A  is a cross-sectional view of a vehicle lamp when outputting a low-beam, and  FIG. 26B  is a cross-sectional view of a vehicle lamp when outputting a high-beam. 
     Referring to  FIG. 26A , an optical module  820  of a vehicle lamp according to another implementation of the present disclosure may include a first light source  822   a  configured to output light in an upward direction, a second light source  822   b  configured to output light in a downward direction, and an auxiliary light source  824  disposed at a lower side of the shield  890 . The shield  890  may include a through hole  892  through which light generated by the second light source  822   b  and reflected by the first reflector (specifically, the lower region  830   b  of the first reflector) passes. 
     The second light source  822   b  is controlled by the processor  870  to not emit light when outputting a low-beam, and emit light when outputting a high-beam. For example, since light generated by the second light source  822   b  forms a high-beam pattern, the processor  870  may turn off the second light source  822   b  when outputting a low-beam. 
     On the contrary, the processor  870  may turn on the second light source  822   b  when outputting a high-beam. 
     The processor  870  may turn on the first light source  822   a  when outputting a low-beam or a high-beam. Alternatively, the processor  870  may turn off the first light source  822   a  when outputting a high-beam. 
     The second reflector  848  may be disposed in various positions to vary the beam pattern. 
     For example, the second reflector  848  may be disposed at the first position to reflect light generated by the auxiliary light source  824  to be directly incident on a lower end portion of the lens  850  when outputting a low-beam. 
     As another example, referring to  FIG. 26B , the second reflector  848  may be disposed at the second position to allow light generated by the auxiliary light source  824  and light  2600   c  generated by the second light source  822   b  and reflected by the first reflector (specifically, the lower region  830   b  of the first reflector) to pass toward the shield  890  when outputting a high-beam. 
     Furthermore, light  2600   c  generated by the second light source  822   b  and reflected by the first reflector (specifically, the lower region  830   b  of the first reflector  830 ) passes through the through hole  892  of the shield  890  to form a high-beam pattern. 
     As described above, a reflective member  896  may be provided along at least a part of an interior region of the through hole  892 . 
     Light generated by the auxiliary light source  824  may be reflected by the reflective member  896  to enhance an intensity of light of a high-beam pattern. 
     To this end, when outputting a high-beam, as illustrated in  FIG. 26B , the processor  870  may control the second reflector  848  to be disposed at the second position to allow light  2600   c  generated by the second light source  822   b  and reflected by the lower region  830   b  of the first reflector to pass through the through hole  892  of the shield  890 . The light generated by the auxiliary light source  824  is incident on a reflective member  896  of the through hole  892  of the shield  890 . 
     As an example, in  FIGS. 26A and 26B , the second reflector  848  may be coupled to a rotating body (e.g., an axial shaft) along axis A 1  to rotate about the axis A 1 . In such scenarios, the second reflector  848  may be coupled to, and rotated directly by, movement of the rotating body about axis A 1 . 
     In some implementations, as shown in  FIGS. 27A and 27B , the second reflector  848  may be spaced apart from an axis (e.g., axis A 2 ) by a predetermined distance to rotationally move with respect to the axis A 2 . In such scenarios, the second reflector  848  is not directly coupled to a rotational body along axis A 2 , but nonetheless is controlled to by processor  870  to be oriented at different positions to effectively rotate about the axis A 2 . 
     Specifically, referring to  FIGS. 27A and 27B , even when the second reflector  848  is spaced apart from an axis (A 2 ) by a predetermined distance and configured to rotate about the axis (A 2 ), the processor  870  may control the second reflector  848  to be disposed at a first position to directly reflect light generated by the auxiliary light source  824  to a lower end portion of the lens. The second reflector  848  disposed at the first position may also block the light generated by the second light source  822   b  and reflected by the lower region  830   b  of the first reflector from passing through the through hole  892  of the shield  890  when outputting a low-beam. 
     Furthermore, when outputting a high-beam, the processor  870  may control the second reflector  848  to be disposed at a second position different from the first position to direct light generated by the auxiliary light source  824  toward the through hole  892  and the reflective member  896  of the shield  890 . The second reflector  848  disposed at the second position may also allow light generated by the second light source  822   b  to be reflected by the lower region  830   b  of the first reflector and pass through the through hole  892  of the shield  890 . 
       FIG. 28  illustrates a diagram of an example of an adaptive illumination provided by the vehicle lamp according to some implementations disclosed herein. 
     A vehicle lamp described in the present disclosure may output or project light in a forward direction to form a predetermined beam pattern. At this time, when a preset object to which light should be projected is sensed through the sensing unit  120  of the vehicle, the processor  870  may control the shield  840  to project light to the sensed object using the vehicle lamp  800 . 
     The preset object denotes an object previously set to which light is adaptively projected based on the ADAS function of the vehicle. Examples of the preset object may include an object existing within a predetermined distance with respect to the present vehicle  100  (e.g., another vehicle, a person, an animal, a sign, a surrounding environment, a notice board, a traffic light, a line, etc.) or an object set to give attention to a driver. The preset object may be determined or varied based on control by the processor or user input. 
     The beam pattern of the light projected by the vehicle lamp  800  may be controlled in various ways based on the send object. 
     For example, the processor  870  may control the light transmittance of at least part of the plurality of pixels included in the shield  840  to project light to the sensed object based on the size and position of the sensed object. 
     As another example, when another vehicle traveling in a direction opposite to the direction in which the vehicle  100  is traveling is sensed, the processor  870  may control the light transmittance of the shield  840  not to project light to the another vehicle. To this end, when a vehicle traveling in an opposite direction is sensed, the processor  870  may reduce the light transmittance of a pixel corresponding to a region covering the sensed other vehicle such that light is not projected to the sensed other vehicle. 
     Through such a configuration, a vehicle lamp may implement an antiglare high-beam assist function that adaptively prevents light from being projected to an oncoming vehicle. 
     To this end, the vehicle  100  may include the vehicle lamp  800 . 
     Furthermore, the operation or control method of the foregoing vehicle lamp  800  may be analogously applied to the operation or control method of the vehicle  100  (or controller  170 ) in the same or similar manner. 
     In addition, one or more or all functions, configurations, or control methods carried out by the processor  870  included in the vehicle lamp  800  may be carried out by the controller  170  provided in the vehicle  100 . As such, one or more or all of the control methods described in this specification may be applied to a control method of a vehicle or a control method of a control apparatus. 
     The foregoing present disclosure may be implemented as codes readable by a computer on a medium written by the program. The computer-readable media may include all kinds of recording devices in which data readable by a computer system is stored. Examples of the computer-readable media may include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device, and the like, and also include a device implemented in the form of a carrier wave (e.g., transmission via the Internet). In addition, the computer may include a processor or controller. 
     It will be understood that various modifications may be made without departing from the spirit and scope of the claims. For example, advantageous results still could be achieved if steps of the disclosed techniques were performed in a different order and/or if components in the disclosed systems were combined in a different manner and/or replaced or supplemented by other components. Accordingly, other implementations are within the scope of the following claims.