WO2020189289A1 - 車両用灯具および車両用灯具システム - Google Patents
車両用灯具および車両用灯具システム Download PDFInfo
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- WO2020189289A1 WO2020189289A1 PCT/JP2020/009212 JP2020009212W WO2020189289A1 WO 2020189289 A1 WO2020189289 A1 WO 2020189289A1 JP 2020009212 W JP2020009212 W JP 2020009212W WO 2020189289 A1 WO2020189289 A1 WO 2020189289A1
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- WIPO (PCT)
- Prior art keywords
- light
- infrared light
- light source
- vehicle
- emitted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
Definitions
- the present disclosure relates to vehicle lighting equipment and vehicle lighting equipment systems used for vehicles such as automobiles.
- a vehicle lighting device in which visible light from a visible light source and infrared light from an infrared light source are reflected by separate optical members to irradiate visible light and infrared light to the front of the vehicle (Patent Documents). 1).
- One of the purposes of the present disclosure is to provide a vehicle lamp and a vehicle lamp system having an improved sensing function using infrared light.
- One of the purposes of the present disclosure is to provide a vehicle lighting fixture and a vehicle lighting fixture system capable of high-definition light distribution for lighting that varies depending on the surrounding conditions of the vehicle with a simple configuration.
- the vehicle lighting equipment is The first light source for irradiating the surroundings of the vehicle with visible light, A second light source that emits infrared light to acquire information on the surroundings of the vehicle, Rotating while reflecting the visible light emitted from the first light source and the infrared light emitted from the second light source, in the horizontal direction on a virtual vertical screen arranged at a predetermined distance from the vehicle.
- a rotating reflector that scans the visible light and the infrared light
- a light receiving unit that receives infrared light emitted from the second light source and reflected by an object
- a control unit that controls the first light source, the second light source, and the rotation reflector.
- the second light source has a first light emitting element and a second optical element.
- the control unit emits infrared light of the first light emitting element and infrared light of the second light emitting element so that the first light emitting element and the second light emitting element do not emit infrared light at the same time. Make the timing different.
- the control unit may be configured to perform one scan in the horizontal direction of the second scan range each time one scan in the horizontal direction of the first scan range is completed.
- the control unit may be configured to switch between emitting infrared light from the first light emitting element and emitting infrared light from the second light emitting element at predetermined time intervals.
- the vehicle lighting system is A first light source for irradiating the periphery of the vehicle with visible light, a second light source for emitting infrared light for acquiring information around the vehicle, the visible light emitted from the first light source, and the like.
- the visible light and the infrared light are scanned in the horizontal direction on a virtual vertical screen arranged at a predetermined distance from the vehicle by rotating while reflecting the infrared light emitted from the second light source.
- a third light source for irradiating the periphery of the vehicle with visible light a fourth light source for emitting infrared light for acquiring information on the periphery of the vehicle, and the visible light emitted from the third light source.
- the visible light and the infrared light are scanned in the horizontal direction on a virtual vertical screen arranged at a predetermined distance from the vehicle by rotating while reflecting the infrared light emitted from the fourth light source.
- a second vehicle lighting device with a second rotation reflector and A light receiving unit that receives infrared light emitted from the second light source and reflected by the object and infrared light emitted from the fourth light source and reflected by the object.
- a control unit that controls the second light source and the fourth light source With The control unit is different from the infrared light emission timing of the second light source and the infrared light emission timing of the fourth light source so that the second light source and the fourth light source do not emit infrared light at the same time. Let me.
- the control unit may be configured to perform one scan in the horizontal direction of the second scan range each time one scan in the horizontal direction of the first scan range is completed.
- the control unit may be configured to switch between emitting infrared light from the second light source and emitting infrared light from the fourth light source at predetermined time intervals.
- the light receiving unit is arranged in the first vehicle lamp, and has a first light receiving unit that receives infrared light emitted from the second light source and reflected by the object, and the second vehicle lamp. It may be provided with a second light receiving unit which is arranged inside and receives infrared light emitted from the fourth light source and reflected by the object.
- the reflected light of the infrared light reflected by the object can be received in the vicinity of the position where the infrared light is emitted, so that the angle of the return light with respect to the emitted light becomes small. This makes it possible to improve the accuracy of detecting the direction (angle coordinates) and distance of the object.
- first vehicle lighting equipment may be a left side headlamp
- second vehicle lighting equipment may be a right side headlamp
- the sensing function using infrared light is improved in front of the vehicle.
- the vehicle lighting equipment is The first light source for irradiating the surroundings of the vehicle with visible light, A second light source that emits infrared light to acquire information on the surroundings of the vehicle, Rotating while reflecting the visible light emitted from the first light source and the infrared light emitted from the second light source, in the horizontal direction on a virtual vertical screen arranged at a predetermined distance from the vehicle.
- a rotating reflector that scans the visible light and the infrared light
- a light receiving unit that receives infrared light emitted from the second light source and reflected by an object is provided.
- the second light source includes a first light emitting element that emits infrared light having a first wavelength, and a second light emitting element that emits infrared light having a second wavelength different from the first wavelength.
- the first scanning range in which the infrared light emitted from the first light emitting element is scanned and the second scanning range in which the infrared light emitted from the second light emitting element is scanned are partially. It may be duplicated.
- the light distribution for lighting which varies depending on the surrounding conditions of the vehicle, can be made higher in definition with a simple configuration.
- the vehicle lighting system is A first light source for irradiating the periphery of the vehicle with visible light, a second light source for emitting infrared light of the first wavelength for acquiring information on the periphery of the vehicle, and the first light source.
- the visible light and the infrared light rotate while reflecting the visible light and the infrared light emitted from the second light source, and the visible light and the infrared light are horizontally arranged on a virtual vertical screen arranged at a predetermined distance from the vehicle.
- the first rotating reflector which scans the light source for the first vehicle, and A third light source for irradiating the periphery of the vehicle with visible light, and a fourth light source for emitting infrared light having a second wavelength different from the first wavelength for acquiring information on the periphery of the vehicle. Rotate while reflecting the visible light emitted from the third light source and the infrared light emitted from the fourth light source, and scan the visible light and the infrared light in the horizontal direction on the virtual vertical screen.
- a second vehicle lighting device with a second rotation reflector includes a light receiving unit that receives infrared light emitted from the second light source and reflected by the object and infrared light emitted from the fourth light source and reflected by the object.
- first vehicle lamp may be a left headlamp
- second vehicle lamp may be a right headlamp
- the sensing function using infrared light is improved in front of the vehicle.
- At least a part of the first scanning range in which the infrared light emitted from the second light source is scanned and the second scanning range in which the infrared light emitted from the fourth light source is scanned overlap. You may.
- the light distribution for lighting which varies depending on the surrounding conditions of the vehicle, can be made higher in definition with a simple configuration.
- the light receiving unit is arranged in the first vehicle lamp, and has a first light receiving unit that receives infrared light emitted from the second light source and reflected by the object, and the second vehicle lamp. It may be provided with a second light receiving unit which is arranged inside and receives infrared light emitted from the fourth light source and reflected by the object.
- the reflected light of the infrared light reflected by the object can be received in the vicinity of the position where the infrared light is emitted, so that the angle of the return light with respect to the emitted light becomes small. This makes it possible to improve the accuracy of detecting the direction (angle coordinates) and distance of the object.
- the sensing function using infrared light can be improved.
- the light distribution for lighting which varies depending on the surrounding conditions of the vehicle, can be made high-definition with a simple configuration.
- FIG. 1 shows a block diagram of a vehicle system 2 (an example of a vehicle lighting system) mounted on a vehicle 1.
- the vehicle system 2 includes a vehicle control unit 3 (an example of a control unit), a headlamp 4, a sensor 5, a camera 6, a radar 7, and an HMI (Human Machine). It includes an interface) 8, a GPS (Global Positioning System) 9, a wireless communication unit 10, and a map information storage unit 11.
- the vehicle system 2 includes a steering actuator 12, a steering device 13, a brake actuator 14, a brake device 15, an accelerator actuator 16, and an accelerator device 17.
- the vehicle control unit 3 is configured to control the running of the vehicle 1.
- the vehicle control unit 3 is composed of, for example, an electronic control unit (ECU: Electronic Control Unit).
- the electronic control unit includes a microcontroller including a processor and a memory, and other electronic circuits (for example, a transistor).
- the processor is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), and / or a GPU (Graphics Processing Unit).
- the memory is a ROM (Read Only Memory) in which various vehicle control programs (for example, an artificial intelligence (AI) program for automatic driving) are stored, and a RAM (Random Access Memory) in which various vehicle control data are temporarily stored. )including.
- the processor is configured to expand a program designated from various vehicle control programs stored in the ROM on the RAM and execute various processes in cooperation with the RAM.
- the headlamp 4 is a lighting device mounted on the front portion of the vehicle 1, and includes a lamp unit 42 that irradiates light toward the road around the vehicle 1 and a lamp control unit 43 (an example of the control unit). ing.
- the detailed configuration of the lamp unit 42 and the lamp control unit 43 will be described later.
- the vehicle control unit 3 generates an instruction signal for controlling the lighting of the lamp unit 42 when a predetermined condition is satisfied, and transmits the instruction signal to the lamp control unit 43.
- the lamp control unit 43 controls turning on and off of the lamp unit 42 based on the received instruction signal.
- the sensor 5 includes an acceleration sensor, a speed sensor, a gyro sensor, and the like.
- the sensor 5 is configured to detect the traveling state of the vehicle 1 and output the traveling state information to the vehicle control unit 3.
- the sensor 5 includes a seating sensor that detects whether the driver is sitting in the driver's seat, a face orientation sensor that detects the direction of the driver's face, an external weather sensor that detects the external weather condition, and whether or not there is a person in the vehicle.
- a motion sensor or the like for detecting may be further provided.
- the sensor 5 may include an illuminance sensor that detects the illuminance of the surrounding environment of the vehicle 1.
- the camera 6 is, for example, a camera including an image sensor such as a CCD (Charge-Coupled Device) or a CMOS (Complementary MOS).
- the imaging of the camera 6 is controlled based on the signal transmitted from the vehicle control unit 3. For example, the camera 6 can capture an image at a frame rate matched to the on / off frequency of the lamp unit 42. As a result, the camera 6 can acquire both the image when the lamp unit 42 is lit and the image when the lamp unit 42 is turned off.
- the radar 7 is a millimeter wave radar, a microwave radar, a laser radar, or the like.
- the radar 7 may be provided with LiDAR (Light Detection and Ranking or Laser Imaging Detection and Ranking).
- LiDAR is a sensor that generally emits invisible light in front of it and acquires information such as the distance to an object, the shape of the object, and the material of the object based on the emitted light and the return light.
- the camera 6 and the radar 7 are configured to detect the surrounding environment of the vehicle 1 (other vehicles, pedestrians, road shapes, traffic signs, obstacles, etc.) and output the surrounding environment information to the vehicle control unit 3. ..
- the HMI 8 is composed of an input unit that receives an input operation from the driver and an output unit that outputs driving information and the like to the driver.
- the input unit includes a steering wheel, an accelerator pedal, a brake pedal, an operation mode changeover switch for switching the operation mode of the vehicle 1, and the like.
- the output unit is a display that displays various traveling information.
- the GPS 9 is configured to acquire the current position information of the vehicle 1 and output the acquired current position information to the vehicle control unit 3.
- the wireless communication unit 10 is configured to receive information about another vehicle (for example, traveling information) around the vehicle 1 from the other vehicle and transmit information about the vehicle 1 (for example, traveling information) to the other vehicle. (Vehicle-to-vehicle communication). Further, the wireless communication unit 10 is configured to receive infrastructure information from infrastructure equipment such as traffic lights and indicator lights and to transmit traveling information of vehicle 1 to the infrastructure equipment (road-to-vehicle communication).
- the map information storage unit 11 is an external storage device such as a hard disk drive in which map information is stored, and is configured to output map information to the vehicle control unit 3.
- the vehicle control unit 3 determines at least one of the steering control signal, the accelerator control signal, and the brake control signal based on the traveling state information, the surrounding environment information, the current position information, the map information, and the like. Generate one automatically.
- the steering actuator 12 is configured to receive a steering control signal from the vehicle control unit 3 and control the steering device 13 based on the received steering control signal.
- the brake actuator 14 is configured to receive a brake control signal from the vehicle control unit 3 and control the brake device 15 based on the received brake control signal.
- the accelerator actuator 16 is configured to receive an accelerator control signal from the vehicle control unit 3 and control the accelerator device 17 based on the received accelerator control signal. As described above, in the automatic driving mode, the traveling of the vehicle 1 is automatically controlled by the vehicle system 2.
- the vehicle control unit 3 when the vehicle 1 travels in the manual driving mode, the vehicle control unit 3 generates a steering control signal, an accelerator control signal, and a brake control signal according to the manual operation of the driver on the accelerator pedal, the brake pedal, and the steering wheel.
- the steering control signal, the accelerator control signal, and the brake control signal are generated by the manual operation of the driver, so that the driving of the vehicle 1 is controlled by the driver.
- the operation mode includes an automatic operation mode and a manual operation mode.
- the automatic driving mode includes a fully automatic driving mode, an advanced driving support mode, and a driving support mode.
- the vehicle system 2 automatically performs all driving controls such as steering control, brake control, and accelerator control, and the driver is not in a state where the vehicle 1 can be driven.
- the vehicle system 2 automatically performs all driving control of steering control, brake control, and accelerator control, and the driver does not drive the vehicle 1 although he / she is in a state where he / she can drive the vehicle 1.
- the vehicle system 2 In the driving support mode, the vehicle system 2 automatically performs some driving control of steering control, brake control, and accelerator control, and the driver drives the vehicle 1 under the driving support of the vehicle system 2.
- the vehicle system 2 In the manual driving mode, the vehicle system 2 does not automatically control the driving, and the driver drives the vehicle 1 without the driving support of the vehicle system 2.
- the driving mode of the vehicle 1 may be switched by operating the driving mode changeover switch.
- the vehicle control unit 3 sets the driving mode of the vehicle 1 into four driving modes (fully automatic driving mode, advanced driving support mode, driving support mode, manual driving mode) according to the driver's operation on the driving mode changeover switch. ).
- the driving mode of the vehicle 1 is automatically set based on the information on the travelable section in which the autonomous vehicle can travel, the travel prohibited section in which the autonomous vehicle is prohibited, or the information on the external weather condition. It may be switched.
- the vehicle control unit 3 switches the driving mode of the vehicle 1 based on this information.
- the driving mode of the vehicle 1 may be automatically switched by using a seating sensor, a face orientation sensor, or the like. In this case, the vehicle control unit 3 switches the driving mode of the vehicle 1 based on the output signals from the seating sensor and the face orientation sensor.
- FIG. 2 is a block diagram schematically showing a partial configuration of the vehicle system 2.
- the headlamps 4 mounted on the vehicle system 2 are provided on the left side and the right side of the front part of the vehicle, respectively. However, for simplification of the drawing, only the left side headlamp of the left and right headlamps is shown in FIG. ing.
- the vehicle system 2 has, as the camera 6, a visible light camera 6A capable of capturing the periphery of the vehicle 1 with visible light and an image capable of imaging the periphery of the vehicle 1 with infrared light. It is equipped with an infrared camera 6B. Instead of providing the visible light camera 6A and the infrared camera 6B, a single camera using an imaging element capable of simultaneously capturing a color image and an infrared image using both visible light and infrared light is provided. You may be. Further, the vehicle system 2 includes an image processing unit 18 and a monitor 19.
- the infrared camera 6B is a camera capable of photographing the surroundings of a vehicle even at night by detecting infrared rays (infrared light).
- the image processing unit 18 processes the video captured by the visible light camera 6A and the infrared camera 6B, and transmits the processed video signal to the vehicle control unit 3 and the monitor 19.
- the lamp unit 42 of the headlamp 4 includes a low beam lamp unit 42L that forms a low beam light distribution pattern and a high beam lamp unit 42H (an example of a vehicle lamp) that forms a high beam light distribution pattern.
- the low beam lighting unit 42L is a parabola type or projector type lighting unit.
- the low beam lamp unit 42L uses an incandescent lamp having a filament such as a halogen lamp, a HID (High Integrity Discovery) lamp such as a metal halide lamp, an LED (Light Emitting Node), or the like as a light source.
- the high beam lamp unit 42H includes a visible light source 44 (an example of a first light source and a third light source), an infrared light source 45 (an example of a second light source and a fourth light source), an optical member 46, and a photodiode 47 (light receiving light).
- a visible light source 44 an example of a first light source and a third light source
- an infrared light source 45 an example of a second light source and a fourth light source
- an optical member 46 an example of a second light source and a fourth light source
- a photodiode 47 light receiving light.
- the lamp control unit 43 of the headlamp 4 is composed of an electronic control unit (ECU), and sets the lighting state of the lamp unit 42 to a predetermined lighting state according to the information related to the automatic operation of the vehicle 1. It is configured.
- the illumination state referred to here includes the on-off and blinking cycles (ON / OFF cycles of pulse lighting) of each light emitting element constituting the lamp unit 42.
- the lamp control unit 43 is electrically connected to a power source (not shown), and includes a microcontroller 50 including a processor such as a CPU and MPU and a memory such as a ROM and a RAM, LED drivers 51 and 52, and a motor driver 53.
- the current-voltage conversion / amplification circuit 54 for the processor 47 and the measurement circuit 55 are included.
- the LED drivers 51 and 52 are drivers for driving each light emitting element (LED) constituting the visible light source 44 and the infrared light source 45, respectively.
- the motor driver 53 is a driver for driving the optical member 46 (specifically, the rotary reflector 65 described later).
- the current-voltage conversion / amplification circuit 54 is a circuit for converting a current signal (sensor signal) output from the photodiode 47 into a voltage signal and amplifying the voltage signal.
- the measurement circuit 55 receives the drive signal of the infrared light source 45 from the LED driver 52 that drives the infrared light source 45, and the current signal from the photodiode 47 is converted into a voltage signal by the current-voltage conversion / amplification circuit 54. Receive the signal.
- the measurement circuit 55 measures the difference between the emission timing of the infrared light from the infrared light source 45 and the reception timing of the reflected light of the infrared light by the photodiode 47 from these received signals, and the result is micron. It transmits to the controller 50.
- the microcontroller 50 controls these drivers 51 to 53 and the circuits 54 and 55, respectively.
- the emission timing of the infrared light source 45 is a timing at which each light emitting element constituting the infrared light source 45 emits infrared light.
- the light receiving timing of the photodiode 47 is a timing at which it is detected that the reflected light of infrared light is incident on the photodiode 47 (the photodiode 47 receives the reflected light of infrared light).
- the vehicle control unit 3 and the lamp control unit 43 are provided as separate configurations, but they may be integrally configured. That is, the lamp control unit 43 and the vehicle control unit 3 may be composed of a single electronic control unit.
- FIG. 3 is a top view of the high beam lamp unit 42H.
- FIG. 4 is a partially enlarged view of the high beam lamp unit 42H.
- the high beam lamp unit 42H includes a bracket 60 for mounting each component.
- the bracket 60 is attached to a housing (not shown) of the high beam lamp unit 42H.
- a first wiring board 61 provided with a part of the visible light source 44 and a part of the infrared light source 45 is attached to the bracket 60.
- a control box 63 in which the components of the lamp control unit 43 are housed is arranged on the right side of the first wiring board 61.
- a second wiring board 62 provided with another part of the visible light source 44 and another part of the infrared light source 45 at a place separated from the place where the first wiring board 61 of the bracket 60 is attached. Is installed. Further, a photodiode 47 is arranged in a part of the control box 63 (here, the front side of the lamp).
- a rotary reflector 65 which is a component of the optical member 46, is attached to a position of the bracket 60 facing the first wiring board 61 and the second wiring board 62.
- a lens 66 which is another component of the optical member 46, is attached to the bracket 60.
- the lens 66 is provided on the front side of the lamp with respect to the rotary reflector 65.
- the lens 66 includes a first lens portion 67 shown on the right side of FIGS. 3 and 4, and a second lens portion 68 formed continuously with the first lens portion 67 on the left side of the first lens portion 67. Has been done.
- Each of the first lens portion 67 and the second lens portion 68 is configured as a plano-convex aspherical lens having a convex front surface and a flat rear surface.
- the light emitted from the visible light source 44 and the infrared light source 45 is reflected by the rotary reflector 65, passes through the first lens portion 67 or the second lens portion 68, and is irradiated to the front of the lamp.
- the rotation reflector 65 is rotated in one direction around the rotation axis R by the motor driver 53 (see FIG. 2).
- the rotary reflector 65 is configured to rotate and reflect the visible light emitted from the visible light source 44 to form a desired light distribution pattern in front of the lamp. Further, the rotary reflector 65 is configured to reflect the infrared light emitted from the infrared light source 45 while rotating and irradiate the front of the lamp.
- the rotary reflector 65 is provided with two blades 65a having the same shape, which function as a reflecting surface, around the cylindrical rotating portion 65b.
- the rotation axis R of the rotation reflector 65 is oblique with respect to the optical axis Ax1 of the first lens unit 67 and the optical axis Ax2 of the second lens unit 68.
- the blade 65a of the rotary reflector 65 has a twisted shape so that the angle formed by the optical axes Ax1 and Ax2 and the reflection surface changes as the blade 65a of the rotary reflector 65 goes in the circumferential direction about the rotation axis R.
- the blade 65a rotates and reflects the light emitted from the visible light source 44 and the infrared light source 45, so that scanning using the light of each light source becomes possible.
- FIG. 5 is a front view of the first wiring board 61
- FIG. 6 is a front view of the second wiring board 62.
- the first wiring board 61 has a plurality of (nine in this example) light emitting elements (hereinafter referred to as visible light LEDs) 44-1 to capable of emitting visible light as a visible light source 44. 44-9 are arranged.
- the visible light LEDs 44-1 to 44-9 are arranged in an inverted U shape in order from the visible light LED 44-1 in the front view of the first wiring board 61.
- the light emitted from these visible light LEDs 44-1 to 44-9 forms a condensing portion in the high beam light distribution pattern.
- the IR-LED45-1 is arranged on the left side of the visible light LED 44-3 in the front view of the first wiring board 61.
- the IR-LED45-2 is arranged on the right side of the visible light LED 44-7 in the front view of the first wiring board 61.
- a plurality of (two in this example) visible light LEDs 44-10 and 44-11 capable of emitting visible light as a visible light source 44 are arranged in parallel on the second wiring board 62. There is. The light emitted from these visible light LEDs 44-10 and 44-11 forms a diffused portion in the high beam light distribution pattern. Further, an infrared light LED 45-3 capable of emitting infrared light as an infrared light source 45 is arranged on the second wiring board 62. The IR-LED45-3 is arranged on the left side and above the visible light LED 44-10 in the front view of the second wiring board 62.
- Each visible light LED 44-1 to 44-11 as a visible light source 44 is composed of, for example, a white LED capable of irradiating visible light.
- a white LED capable of irradiating visible light.
- the visible light source 44 and the infrared light source 45 it is also possible to use a semiconductor light emitting element such as an EL element or an LD element as a light source instead of the LED.
- a light source that can turn on and off the light accurately in a short time is preferable for the control for non-irradiating a part of the high beam light distribution pattern described later.
- the first lens portion 67 on the right side of the lens 66 is visible light emitted from visible light LEDs 44-1 to 44-9 arranged on the first wiring board 61 and reflected by the rotating reflector 65, and IR-LED 45. It is arranged at a position where infrared light emitted from -1, 45-2 and reflected by the rotary reflector 65 can be transmitted. That is, visible light and infrared light for forming a condensing portion of the high beam light distribution pattern are transmitted to the front of the lamp through the first lens portion 67.
- the second lens portion 68 on the left side of the lens 66 is visible light emitted from visible light LEDs 44-10 and 44-11 arranged on the second wiring board 62 and reflected by the rotary reflector 65, and IR. -It is arranged at a position where infrared light emitted from the LED 45-3 and reflected by the rotary reflector 65 can be transmitted. That is, visible light and infrared light for forming the diffused portion of the high beam light distribution pattern are transmitted to the front of the lamp through the second lens portion 68.
- the shape of the lens 66 may be appropriately selected according to the required light distribution pattern, illuminance distribution, and other light distribution characteristics, but a free-form surface lens may be used instead of the aspherical lens. ..
- FIG. 7 shows a spot formed on a virtual vertical screen arranged at a position 25 m in front of the vehicle by visible light emitted from the visible light LEDs 44-1 to 44-9 provided on the first wiring board 61, for example. It is a figure which shows the image of light.
- FIG. 8 is a diagram showing a light distribution pattern P1 on a virtual vertical screen in a state where the visible light emitted from each visible light LED 44-1 to 44-9 is scanned by the rotation of the rotation reflector 65.
- image S1 is an image of spot light emitted from visible light LED 44-1
- image S2 is an image of spot light emitted from visible light LED 44-2
- image S3 is an image of visible light LED 44-3
- the image S4 is an image of the spot light emitted from the visible light LED 44-4
- the image S5 is an image of the spot light emitted from the visible light LED 44-5.
- S6 is an image of spot light emitted from visible light LED 44-6
- image S7 is an image of spot light emitted from visible light LED 44-7
- image S8 is an image of spot light emitted from visible light LED 44-8. It is an image of light
- the image S9 is an image of spot light emitted from the visible light LED 44-9.
- the images S1 to S9 are arranged and irradiated in a U shape on a virtual vertical screen. Of these, the images S3, S4, S5, S6, and S7 are illuminated on the horizon HH on the virtual vertical screen.
- the light distribution pattern P1 As shown in FIG. Is formed.
- the light distribution pattern P1 is formed as a condensing portion of the high beam light distribution pattern described later.
- the illuminance is particularly high at a portion where visible light emitted from a plurality of visible light LEDs is repeatedly irradiated.
- the light distribution pattern P1 is formed so that the illuminance is highest at the intersection of the vertical line VV and the horizontal line HH on the virtual vertical screen.
- FIG. 9 is a diagram showing an image of spot light formed on a virtual vertical screen by visible light emitted from each visible light LED 44-10, 44-11 provided on the second wiring board 62.
- FIG. 10 is a diagram showing a light distribution pattern P2 on a virtual vertical screen in a state where visible light emitted from each visible light LED 44-10, 44-11 is scanned by the rotation of the rotary reflector 65.
- the visible light emitted from the visible light LED 44-10 and the visible light LED 44-11 is reflected by the rotating reflector 65 and is transmitted through the second lens unit 68 to be inverted vertically and horizontally, and is shown on the virtual vertical screen.
- An image of spot light as shown in 9 is formed.
- the image S10 is an image of the spot light emitted from the visible light LED 44-10
- the image S11 is an image of the spot light emitted from the visible light LED 44-11.
- the sizes of the images S10 and S11 are formed to be larger than the sizes of the visible light spotlight images S1 to S9 emitted from the visible light LEDs 44-1 to 44-9 shown in FIG. 7.
- the images S10 and S11 formed by the visible light LEDs 44-10 and 44-11 mounted on the left headlamp are arranged side by side along the horizontal line HH on the left side of the vertical line VV on the virtual vertical screen. Be irradiated.
- the images S10 and S11 formed by the visible light LEDs 44-10 and 44-11 mounted on the right headlamp are the horizontal line H on the right side of the vertical line VV on the virtual vertical screen. Irradiated in parallel along -H.
- the light distribution pattern P2 is formed as a part of the diffused portion of the high beam light distribution pattern described later.
- the images S10 and S11 formed by the visible light LEDs 44-10 and 44-11 mounted on the left headlamp are diffused because they are irradiated on the left side of the vertical line VV on the virtual vertical screen.
- the light distribution pattern P2 forming a part of the portion is formed on the left side portion of the irradiation region of the light distribution pattern P1 forming the condensing portion.
- the images S10 and S11 formed by the visible light LEDs 44-10 and 44-11 mounted on the right headlamp are illuminated on the right side of the vertical line VV on the virtual vertical screen. Therefore, the other part of the diffusing portion is formed on the right side portion of the irradiation region of the light distribution pattern P1 for the condensing portion. In this way, the light distribution of the visible light LEDs 44-10, 44-11 of the left headlamp (light distribution pattern P2) and the light distribution of the visible light LEDs 44-10, 44-11 of the right headlamp are combined. , A light distribution pattern for the diffuser is formed. Then, the light distribution pattern for the high beam shown in FIG. 11 is formed by synthesizing the light distribution pattern P1 for the condensing portion and the light distribution pattern for the diffusing portion.
- FIG. 11 shows a light distribution pattern P3 formed on a virtual vertical screen by visible light radiated forward from the low beam lamp unit 42L and the high beam lamp unit 42H.
- the visible light distribution pattern P3 shown in FIG. 11 is formed by combining visible light emitted from the low beam lamp unit 42L and the high beam lamp unit 42H. That is, the light distribution pattern P3 is a combination of the visible light low beam light distribution pattern P4 emitted from the low beam lamp unit 42L and the visible light high beam light distribution patterns P1 and P2 emitted from the high beam lamp unit 42H. Formed by synthesis.
- the visible light LEDs 44-1 to 44- are arranged so that the upper part of the oncoming vehicle 100 (the position of the driver of the oncoming vehicle 100) and the peripheral area thereof are not irradiated with light.
- the light distribution is controlled by turning off the light 11 at the timing corresponding to the area. As a result, glare light to the driver of the oncoming vehicle 100 can be suppressed.
- FIG. 12 shows a virtual vertical screen by infrared light emitted from each IR-LED 45-1, 45-2 provided on the first wiring board 61 and IR-LED 45-3 provided on the second wiring board 62. It is a figure which shows the image of the spot light of the infrared light formed above.
- FIG. 13 is a diagram showing a light distribution pattern P5 in a state where infrared light emitted from each IR-LED45-1, 45-2 and IR-LED45-3 is scanned by rotation of the rotation reflector 65. ..
- the infrared light emitted from each of the IR-LEDs 45-1 and 45-2 is reflected by the rotary reflector 65 and is transmitted through the first lens unit 67 to be inverted vertically and horizontally, and is shown on the virtual vertical screen.
- An image of spot light as shown in No. 12 is formed.
- the infrared light emitted from the IR-LED45-3 is reflected by the rotary reflector 65 and is transmitted through the second lens portion 68 to be inverted vertically and horizontally, and is shown in FIG. 12 on a virtual vertical screen. Form an image of spot light like this.
- the image S IR 1 is an image of the spot light of infrared light emitted from IR-LED45-1
- the image S IR 2 is an image of the spot light of infrared light emitted from IR-LED45-2. It is an image
- image S IR 3 is an image of spot light of infrared light emitted from IR-LED45-3.
- the images S IR 1 and S IR 2 are irradiated on the horizontal line HH on the virtual vertical screen at a certain distance.
- the image S IR 3 is illuminated between the image S IR 1 and the image S IR 2 on the horizontal line HH on the left side of the vertical line VV on the virtual vertical screen.
- the size of the image S IR 3 is formed to be larger than the size of the images S IR 1 and S IR 2.
- the image S IR 3 formed by the IR-LED 45-3 mounted on the right headlamp is along the horizontal line HH on the right side of the vertical line VV on the virtual vertical screen. Be irradiated.
- the light distribution pattern P5 is a high beam light distribution pattern P1 and P2 of visible light according to the images of the spot light of infrared light emitted from IR-LED45-1, 45-2 S IR 1 and S IR 2. Regardless of the control, the light distribution is such that the entire region of the horizon HH is irradiated substantially uniformly. Further, in the light distribution pattern P5, the region irradiated by the infrared light emitted from the IR-LED45-3 (an example of the second scanning range) is the infrared emitted from the IR-LED45-1, 45-2. The light distribution is such that at least a part of the area irradiated by light (an example of the first scanning range) overlaps.
- the IR-LED 45- The region irradiated by the infrared light emitted from No. 3 is located to the left in the irradiation region of the light distribution pattern P5.
- the image S IR 3 formed by the IR-LED 45-3 mounted on the right headlamp is illuminated on the right side of the vertical line VV on the virtual vertical screen, so that the IR-LED 45- The region irradiated by the infrared light emitted from No. 3 is located to the right in the irradiation region of the light distribution pattern P5.
- Infrared light emitted along the horizon HH like the light distribution pattern P5 is reflected by an object (object) existing in front of the vehicle.
- the photodiode 47 included in the high beam lamp unit 42H receives infrared light reflected by an object and outputs it as a current signal.
- the output infrared light current signal is converted into a voltage signal by the current-voltage conversion / amplification circuit 54, further amplified, and transmitted to the measurement circuit 55.
- the measurement circuit 55 determines the emission timing of infrared light and the reflection of the infrared light based on the drive signal of the infrared light source 45 received from the LED driver 52 and the voltage signal transmitted from the current-voltage conversion / amplification circuit 54.
- a signal relating to the light reception timing and the light intensity of the reflected light is transmitted to the micro controller 50.
- the microcontroller 50 acquires information such as the distance to the object, the shape of the object, and the material of the object based on the signals related to infrared light (signals related to emitted light and return light (reflected light)) received from the measurement circuit 55. To do.
- the microcontroller 50 can detect the presence of a pedestrian or an oncoming vehicle in front of the vehicle. Then, the microcontroller 50 turns on and off the visible light source 44 (visible light LEDs 44-1 to 44-11) so as not to give glare to pedestrians and oncoming vehicles in front of the vehicle detected based on the infrared light signal. To control.
- the microcontroller 50 transmits a signal related to information around the vehicle detected based on the infrared light signal to the vehicle control unit 3.
- the vehicle control unit 3 automatically outputs at least one of the steering control signal, the accelerator control signal, and the brake control signal based on the surrounding environment information acquired from the microcontroller 50. Can be generated.
- the lamp control unit 43 of the present embodiment emits infrared light of IR-LED45-1, 45-2 so that IR-LED45-1, 45-2 and IR-LED45-3 do not emit infrared light at the same time.
- the timing and the emission timing of infrared light of IR-LED45-3 are different.
- the microcontroller 50 of the lamp control unit 43 can be used.
- the period and time for emitting infrared light of IR-LED45-1, 45-2 do not overlap with the period and time for emitting infrared light of IR-LED45-3.
- a pulse signal is generated so that the emission of the infrared light of the IR-LEDs 45-1 and 45-2 and the emission of the infrared light of the IR-LED45-3 can be switched at predetermined time intervals.
- the LED driver 52 which receives the pulse signal from the microcontroller 50, controls the pulse lighting of the IR-LEDs 45-1, 45-2 and the IR-LED 45-3 based on the pulse signal.
- the lamp control unit 43 emits red light emitted from the IR-LED45-3 each time the scanning range in which the infrared light emitted from the IR-LEDs 45-1 and 45-2 is scanned is completed. It may be configured to perform a single scan of outside light. As a result, when one of the IR-LEDs 45-1, 45-2 and IR-LED45-3 is lit (infrared light is emitted), the other is not lit (infrared light is not emitted). Is controlled.
- the infrared light emitted from the IR-LED45-1 and 45-2 and the infrared light emitted from the IR-LED45-3 are reflected by an object (object) existing in front of the vehicle, and at different timings. It is incident on the photodiode 47.
- the measurement circuit 55 identifies the IR-LED (IR-LED45-1, 45-2 or IR-LED45-3) that emits infrared light based on the drive signal of the infrared light source 45 received from the LED driver 52. , Detects its emission timing.
- the measurement circuit 55 emits infrared light from the specified IR-LED (and infrared light is emitted from the other IR-LED) based on the voltage signal received from the current-voltage conversion / amplification circuit 54. (For example, before newly receiving the drive signal of the infrared light source 45 received from the LED driver 52), the reception timing of the reflected light of the infrared light incident on the photodiode 47 is detected. Then, the measurement circuit 55 measures the difference between the detected infrared light emission timing of the IR-LED and the reception timing of the reflected infrared light of the infrared light, and transmits the result to the microcontroller 50.
- the IR-LEDs 45-1, 45-2 and IR-LED 45-3 of the infrared light source 45 simultaneously emit infrared light.
- the infrared light emission timing of IR-LED45-1, 45-2 and the infrared light emission timing of IR-LED45-3 are different so as not to emit.
- the sensing function using infrared light is improved, and the position of an object such as an oncoming vehicle can be detected with high accuracy. Therefore, for example, the light distribution pattern in which the glare light shown in FIG. 11 is suppressed can be accurately formed.
- the visible light source 44, the infrared light source 45, and the photodiode 47 are mounted in a single high beam lamp unit 42H, the high beam lamp is equipped with both visible light irradiation and infrared light irradiation.
- the miniaturization of the unit 42H can be realized.
- the infrared light source 45 and the photodiode 47 are mounted in a single high beam lamp unit 42H, the reflection of the infrared light reflected by the object near the position where the infrared light is emitted is reflected. It can receive light. As a result, the angle of the return light with respect to the emitted light can be reduced, and the accuracy of detecting the direction (angle coordinates) and the distance of the object can be improved.
- the lamp control unit 43 is configured to scan the scanning range of the IR-LED45-3 once each time the scanning range of the IR-LEDs 45-1 and 45-2 is completed.
- the lamp control unit 43 is configured to switch between the emission of infrared light of IR-LED45-1, 45-2 and the emission of infrared light of IR-LED45-3 at predetermined time intervals. As a result, it is possible to focus on the area around the vehicle that requires the most sensing.
- IR-LED45-1 and IR-LED45-2 are controlled so that the emission timings of infrared light are the same has been described.
- the IR-LED45-1 and IR-LED45-2 may be controlled to emit infrared light at different emission timings.
- two IR-LED45-1 and IR-LED45-2 are arranged on the first wiring board 61.
- only one of R-LED45-1 and IR-LED45-2 may be arranged.
- the image S IR 3 which is an image of the spot light of infrared light emitted from the IR-LED45-3, is red emitted from the IR-LED45-1 and the IR-LED45-2. It is formed so as to be larger than the images S IR 1 and S IR 2, which are images of spot light of external light.
- images S IR 3 and images S IR 1 and S IR 2 may be formed to have similar sizes.
- IR-LED45-1 in order to improve the sensing function using infrared light, IR-LED45-1 so that IR-LED45-1, 45-2 and IR-LED45-3 do not emit infrared light at the same time.
- 45-2 infrared light emission timing and IR-LED45-3 infrared light emission timing are different.
- the infrared light emitted from the IR-LEDs 45-1, 45-2 and IR-LED45-3 and reflected by the object is received by one photodiode 47 at different timings.
- IR-LED45-1,45-2 and IR-LED45-3 are emitted from IR-LED45-1,45-2.
- the wavelength of the infrared light and the wavelength of the infrared light emitted from the IR-LED45-3 are configured to be different.
- the photodiode 47 has a photodiode 47-1 and a photodiode 47.2.
- the infrared light emitted from the IR-LEDs 45-1, 45-2 and reflected by the object is received by the photodiode 47-1.
- the infrared light emitted from the IR-LED45-3 and reflected by the object is received by the photodiode 47-2.
- the basic structure and function of the vehicle system of the second embodiment are the same as those of the vehicle system 2 of the first embodiment shown in FIGS. 2 to 6 except for the above-mentioned differences.
- the same structure and function as those in the first embodiment will be omitted from the description and illustration for convenience of explanation.
- IR-LED45-1,45-2 and IR-LED45-3 are the wavelength of infrared light emitted from IR-LED45-1,45-2 and IR-LED45. It is configured so that the wavelength of the infrared light emitted from -3 is different.
- IR-LED45-1,45-2 is configured to emit infrared light at 850 nm, 905 nm or 1500 nm
- IR-LED45-3 is IR-LED45-of wavelengths of 850 nm, 905 nm and 1500 nm.
- 1,45-2 is configured to emit infrared light of a wavelength not used.
- the photodiode 47-1 having a light receiving sensitivity corresponding to the wavelength of the infrared light emitted by the IR-LEDs 45-1 and 45-2 and the IR-LED45-3 emit the photodiode 47. It has a photodiode 47-2 having a light receiving sensitivity corresponding to the wavelength of infrared light.
- the infrared light emitted from the IR-LED45-1, 45-2 and the infrared light emitted from the IR-LED45-3 are each reflected by an object (object) existing in front of the vehicle, and the corresponding photo is taken. It is incident on the diodes 47-1 and 47.2.
- the measurement circuit 55 emits an IR-LED (IR-LED45-1, IR-LED45-2 or IR-LED45-3) that emits infrared light based on the drive signal of the infrared light source 45 received from the LED driver 52. Identify and detect the emission timing.
- the measurement circuit 55 is infrared from the specified IR-LED (IR-LED45-1, IR-LED45-2 or IR-LED45-3) based on the voltage signal received from the current-voltage conversion / amplification circuit 54. After the light is emitted, the reception timing of the reflected light of the infrared light of the same wavelength incident on the corresponding photodiode 47 (47-1 or 47-2) is detected. The measurement circuit 55 stores in advance the photodiode (47-1 or 47-2) information corresponding to each IR-LED (IR-LED45-1, IR-LED45-2 or IR-LED45-3). You may leave it. Then, the measurement circuit 55 measures the difference between the detected infrared light emission timing of the IR-LED and the reception timing of the reflected infrared light of the infrared light, and transmits the result to the microcontroller 50.
- the specified IR-LED IR-LED45-1, IR-LED45-2 or IR-LED45-3
- the IR-LEDs 45-1, 45-2 and IR-LED45-3 of the infrared light source 45 emit infrared light having different wavelengths. ..
- the sensing function using infrared light is improved, and the position of an object such as an oncoming vehicle can be detected with high accuracy. Therefore, it is possible to improve the definition of the light distribution for lighting, which is variable depending on the situation around the vehicle, with a simple configuration. For example, the light distribution pattern in which the glare light shown in FIG. 11 is suppressed can be accurately formed.
- the lamp control unit 43 can independently control the emission timing of IR-LED45-1, 45-2 and the emission timing of IR-LED45-3.
- IR-LED45-1, 45-2 and IR-LED45-3 may be configured to emit infrared light at the same (same period and same time) emission timing. Even in this case, since the reflected light of infrared light having different wavelengths is received by the corresponding photodiodes 47-1 and 47-2, it is possible to detect infrared light for each wavelength. Therefore, it is not necessary to perform control such as detecting the light reception timing based on the infrared light received between the light emission timing of the IR-LED45-1 and the light emission timing of the IR-LED45-3.
- the visible light source 44, the infrared light source 45, and the photodiode 47 are mounted in a single high beam lamp unit 42H, the high beam lamp is equipped with both visible light irradiation and infrared light irradiation.
- the miniaturization of the unit 42H can be realized.
- the infrared light source 45 and the photodiode 47 are mounted in a single high beam lamp unit 42H, the reflection of the infrared light reflected by the object near the position where the infrared light is emitted is reflected. It can receive light. As a result, the angle of the return light with respect to the emitted light can be reduced, and the accuracy of detecting the direction (angle coordinates) and the distance of the object can be improved.
- the IR-LED45-1 and the IR-LED45-2 emit infrared light having the same wavelength is described.
- the IR-LED45-1 and IR-LED45-2 may be controlled to emit infrared light of different wavelengths.
- two IR-LED45-1 and IR-LED45-2 are arranged on the first wiring board 61.
- only one of IR-LED45-1 and IR-LED45-2 may be arranged.
- the image S IR 3 which is an image of the spot light of infrared light emitted from the IR-LED45-3, is red emitted from the IR-LED45-1 and the IR-LED45-2. It is formed so as to be larger than the images S IR 1 and S IR 2, which are images of spot light of external light.
- images S IR 3 and images S IR 1 and S IR 2 may be formed to have similar sizes.
- FIG. 14 is a schematic view showing a range irradiated by infrared light emitted from the infrared light source 45L of the left headlamp 4L and the infrared light source 45R of the right headlamp 4R according to the third embodiment.
- FIG. 15 is a diagram showing the light receiving intensity of infrared light reflected by the object of FIG. 14 and received by the photodiodes 47L and 47R.
- infrared light emitted from a plurality of IR-LEDs IR-LED45-1, IR-LED45-2 and IR-LED45-3 of the infrared light source 45 arranged in the headlamp 4.
- IR-LED45-1, IR-LED45-2 and IR-LED45-3 IR-LED45-3 of the infrared light source 45 arranged in the headlamp 4.
- the irradiation areas of the infrared rays overlap is described.
- the irradiation region by the infrared light emitted from the IR-LED of the infrared light source 45L of the left headlamp 4L and the infrared light emitted from the IR-LED of the infrared light source 45R of the right headlamp 4R are used.
- the case where the irradiation area overlaps will be described.
- the configurations of the left headlamp 4L and the right headlamp 4R are the same as those of the headlamp 4 of the first embodiment, the description thereof will be omitted, and the components of the left headlamp 4L and the right headlamp 4R will be described. It will be described with an "L” or “R” indicating the left side or the right side.
- the left headlamp 4L is mounted on the left side of the front portion of the vehicle 1.
- the infrared light source 45L of the left headlamp 4L has infrared light in an irradiation range (an example of the first scanning range) from ⁇ L (minus ⁇ L ) to + ⁇ L (plus ⁇ L ) with reference to the vehicle front direction. Is emitted.
- the photodiode 47L of the left headlamp 4L receives infrared light emitted from the infrared light source 45L and reflected by an object (object) in front of the vehicle.
- the right headlamp 4R is mounted on the right side of the front portion of the vehicle 1.
- the infrared light source 45R of the right headlamp 4R has infrared light in the irradiation range (an example of the second scanning range) from ⁇ R (minus ⁇ R ) to + ⁇ R (plus ⁇ R ) with reference to the vehicle front direction. Is emitted.
- the photodiode 47R of the right headlamp 4R receives infrared light emitted from the infrared light source 45R and reflected by an object (object) in front of the vehicle.
- ⁇ L and ⁇ R have the same angle
- - ⁇ L to + ⁇ L and - ⁇ R to + ⁇ R have the same angle range.
- the irradiation region of the left headlamp 4L and the irradiation region of the right headlamp 4R are configured to overlap in the central region in front of the vehicle.
- the left headlamp 4L and the right headlamp 4R are arranged so as to be separated from each other by a predetermined distance d between the infrared light source 45L and the infrared light source 45R along the direction orthogonal to the vehicle front-rear direction.
- the photodiode 47L of the left headlamp 4L and the photodiode 47R of the right headlamp 4R are emitted from the infrared light source 45L and the infrared light source 45R at different angles.
- the reflected light of the infrared light reflected by the object is incident.
- the right head lamp 4R has a predetermined angle of ⁇ 1 from the infrared light source 45R (and a predetermined angle centered on ⁇ 1).
- the infrared light emitted in the angle range of is reflected by the object 100, and the reflected light of the infrared light is received by the photodiode 47R.
- infrared light emitted by the infrared light source 45L from theta 2 of angle is reflected by the object 100, the reflection of the infrared light Light is received by the photodiode 47L.
- the position of the object 100 is specified from the difference between the emission timing of the emission light and the reception timing of the return light detected by the left headlamp 4L and the right headlamp 4R, the angles ⁇ 1 and ⁇ 2 of the emission light, and the distance d. can do.
- the infrared light irradiation region by the infrared light source 45L of the left headlamp 4L and the infrared light irradiation region by the infrared light source 45R of the right headlamp 4R overlap. Therefore, the infrared light received by the photodiode 47L of the left head lamp 4L is either the infrared light emitted from the infrared light source 45L of the left head lamp 4L and reflected by the object, or the right head lamp 4R. It becomes difficult to recognize whether the infrared light is emitted from the infrared light source 45R and reflected by the object.
- the infrared light received by the photodiode 47R of the right headlamp 4R is the infrared light emitted from the infrared light source 45L of the left headlamp 4L and reflected by the object, or the red of the right headlamp 4R. It becomes difficult to recognize whether the infrared light is emitted from the external light source 45R and reflected by the object.
- the vehicle control unit 3 of the present embodiment emits infrared light from the infrared light source 45L so that the infrared light source 45L of the left headlamp 4L and the infrared light source 45R of the right headlamp 4R do not emit infrared light at the same time.
- the timing and the emission timing of the infrared light of the infrared light source 45R are different. For example, when the infrared light source 45L and the infrared light source 45R are pulse-lit controlled so as to emit infrared light at a predetermined period and time, the vehicle control unit 3 receives infrared light via HMI8 or the like.
- the left head lamp 4L and the right head lamp 4R are set so that the cycle and time for emitting infrared light from the infrared light source 45L do not overlap with the cycle and time for emitting infrared light from the infrared light source 45R.
- a pulse control instruction signal is generated for each. That is, a pulse control instruction signal is generated so that the emission of the infrared light of the infrared light source 45L and the emission of the infrared light of the infrared light source 45R can be switched at predetermined time intervals.
- the left headlamp 4L and the right headlamp 4R which have received the pulse control signal from the vehicle control unit 3, control the infrared light source 45L and the infrared light source 45R for pulse lighting at different cycles and times, respectively.
- the vehicle control unit 3 receives one infrared light emitted from the infrared light source 45R each time the scanning range in which the infrared light emitted from the infrared light source 45L is scanned is completed. It may be configured to perform scanning. As a result, the infrared light source 45L and the infrared light source 45R are controlled so that when one is lit (infrared light is emitted), the other is not lit (infrared light is not emitted).
- the measurement circuit 55L of the left head lamp 4L emits infrared light of the infrared light source 54L based on the drive signal of the infrared light source 45L received from the LED driver 52L and the voltage signal received from the current-voltage conversion / amplification circuit 54L. The difference between the timing and the reception timing of the reflected light of the infrared light incident on the photodiode 47L is measured. Then, the measurement circuit 55L transmits the result to the microcontroller 50L.
- the light receiving timing of the photodiode 47L is based on the reflected light of the infrared light incident on the photodiode 47L after the infrared light is emitted from the infrared light source 45L and before the infrared light is emitted from the infrared light source 45R. Is detected.
- the lighting control instruction signal transmitted from the vehicle control unit 3 to the left headlamp 4L includes lighting control information of the infrared light source 45R of the right headlamp 4R, and the measurement circuit 55L includes this lighting control information. Based on the above, the emission timing of the infrared light of the infrared light source 45R is grasped.
- the measurement circuit 55R of the right head lamp 4R is based on the drive signal of the infrared light source 45R received from the LED driver 52R and the voltage signal received from the current-voltage conversion / amplification circuit 54R, and the infrared light of the infrared light source 54R. The difference between the light emission timing and the light reception timing of the reflected infrared light incident on the photodiode 47R is measured. Then, the measurement circuit 55R transmits the result to the microcontroller 50R.
- the vehicle control unit 3 uses the infrared light of the infrared light source 45L so that the infrared light source 45L and the infrared light source 45R do not emit infrared light at the same time.
- the emission timing of the infrared light and the emission timing of the infrared light of the infrared light source 45R are made different.
- the sensing function using infrared light is improved, and the position of an object such as an oncoming vehicle can be detected with high accuracy. Therefore, for example, the light distribution pattern in which the glare light shown in FIG. 11 is suppressed can be accurately formed.
- the infrared light sources 45L and 45R and the photodiodes 47L and 47R are mounted in a single headlamp 4L and 4R, respectively, the infrared light is reflected by the object near the position where the infrared light is emitted. It can receive the reflected light of infrared light. As a result, the angle of the return light with respect to the emitted light can be reduced, and the accuracy of detecting the direction (angle coordinates) and the distance of the object can be improved.
- the lamp control unit 43 is configured to perform one scan of the scanning range of the infrared light source 45L each time the scanning range of the infrared light source 45R is completed.
- the lamp control unit 43 is configured to switch between emitting infrared light from the infrared light source 45R and emitting infrared light from the infrared light source 45L at predetermined time intervals. As a result, it is possible to focus on the area around the vehicle that requires the most sensing.
- the vehicle control unit 3 controls the emission timing of the infrared light of the infrared light source 45L and the emission timing of the infrared light of the infrared light source 45R.
- the lamp control units 43L and 43R of the left headlamp 4L and the right headlamp 4R send and receive signals including emission timing information to each other to adjust the emission timing of infrared light of the infrared light sources 45L and 45R. May be good.
- the configuration of the left headlamp 4L and the right headlamp 4R is the same as the configuration of the headlamp 4 of the first embodiment.
- the configuration of the left headlamp 4L and the right headlamp 4R is the first if the irradiation range of the infrared light source 45 of the left headlamp 4L and the irradiation range of the infrared light source 45 of the right headlamp 4R overlap. It may be different from the configuration of the headlamp 4 of the embodiment.
- the infrared light source 45L of the left head lamp 4L and the infrared light source 45R of the right head lamp 4R do not emit infrared light at the same time.
- the emission timing of the infrared light of the infrared light source 45L and the emission timing of the infrared light of the infrared light source 45R are different.
- the infrared light source 45L of the left head lamp 4L (all optical elements constituting the infrared light source 45L) and the infrared light of the right head lamp 4R are used.
- the light source 45R (all optical elements constituting the infrared light source 45R) is configured to emit infrared light having different wavelengths from each other.
- the basic structure and function of the vehicle system of the fourth embodiment are the same as the structure and function of the vehicle system 2 of the third embodiment shown in FIG. 14, except for the above-mentioned differences.
- the same structure and function as those in the third embodiment will be omitted from the description and illustration for convenience of explanation.
- the vehicle system 2 of the present embodiment includes an infrared light source 45L of the left headlamp 4L (all optical elements constituting the infrared light source 45L) and an infrared light source 45R of the right headlamp 4R (all constituting the infrared light source 45R).
- Optical elements are configured to emit infrared light of different wavelengths from each other.
- the infrared light source 45L is configured to emit infrared light of 850 nm, 905 nm or 1500 nm
- the infrared light source 45R has wavelengths of 850 nm, 905 nm and 1500 nm that are not used by the infrared light source 45L. It is configured to emit infrared light of.
- the photodiode 47L of the left headlamp 4L has a light receiving sensitivity corresponding to the wavelength of the infrared light source 45L
- the photodiode 47R of the right headlamp 4R has a light receiving sensitivity corresponding to the wavelength of the infrared light source 45R. It is configured.
- the measurement circuit 55L of the left head lamp 4L emits infrared light of the infrared light source 54L based on the drive signal of the infrared light source 45L received from the LED driver 52L and the voltage signal received from the current-voltage conversion / amplification circuit 54L. The difference between the timing and the reception timing of the reflected light of the infrared light having the same wavelength as the infrared light emitted from the infrared light source 54L incident on the photodiode 47L is measured. Then, the measurement circuit 55L transmits the result to the microcontroller 50L.
- the measurement circuit 55R of the right head lamp 4R is based on the drive signal of the infrared light source 45R received from the LED driver 52R and the voltage signal received from the current-voltage conversion / amplification circuit 54R, and the infrared light of the infrared light source 54R. The difference between the light emission timing and the reception timing of the reflected light of the infrared light having the same wavelength as the infrared light emitted from the infrared light source 54R incident on the photodiode 47R is measured. Then, the measurement circuit 55R transmits the result to the microcontroller 50R.
- the infrared light source 45L of the left headlamp 4L and the infrared light source 45R of the right headlamp 4R emit infrared light having different wavelengths from each other.
- the sensing function using infrared light is improved, and the position of an object such as an oncoming vehicle can be detected with high accuracy. Therefore, the light distribution for lighting, which varies depending on the surrounding conditions of the vehicle, can be made higher in definition with a simple configuration. For example, the light distribution pattern in which the glare light shown in FIG. 11 is suppressed can be accurately formed.
- the infrared light sources 45L and 45R and the photodiodes 47L and 47R are mounted in a single headlamp 4L and 4R, respectively, the infrared light is reflected by the object near the position where the infrared light is emitted. It can receive the reflected light of infrared light. As a result, the angle of the return light with respect to the emitted light can be reduced, and the accuracy of detecting the direction (angle coordinates) and the distance of the object can be improved.
- all the light emitting elements constituting the infrared light source 45L are configured to emit infrared light having the same wavelength.
- all the light emitting elements constituting the infrared light source 45L may be configured to emit infrared light having different wavelengths from each other.
- the configuration of the left headlamp 4L and the right headlamp 4R is the configuration of the IR-LEDs constituting the infrared light sources 45L and 45R (wavelength of the emitted infrared light) and the photodiode 47.
- the configuration is the same as that of the headlamp 4 of the first embodiment except for the configuration of.
- the configuration of the left headlamp 4L and the right headlamp 4R is the first if the irradiation range of the infrared light source 45 of the left headlamp 4L and the irradiation range of the infrared light source 45 of the right headlamp 4R overlap. It may be different from the configuration of the headlamp 4 of the embodiment.
- the present invention is not limited to the above-described embodiment, and can be freely modified, improved, and the like as appropriate.
- the material, shape, size, numerical value, form, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.
- an infrared light source 45 that irradiates infrared light as a light source for invisible light has been described as an example.
- a light source for invisible light a light source that irradiates invisible light other than infrared light such as ultraviolet rays or X-rays may be adopted.
- the high beam lamp unit 42H provided in the headlamp 4 has been described as an example of the lamp, but as an indicator lamp such as a stop lamp or a tail lamp provided at the rear of the vehicle. It may be configured. According to this configuration, the light distribution function as a stop lamp or a tail lamp and the detection function of an object behind the vehicle can be compatible with each other in a single lamp unit.
- a lens 66 that transmits visible light and infrared light reflected by the rotary reflector 65 is provided in the high beam lamp unit 42H, but the lens 66 is not necessarily provided. There is no need to provide. Visible light and infrared light reflected by the rotary reflector 65 may be directly irradiated in front of the high beam lamp unit 42H without passing through a lens.
- the photodiode mounted on the high beam lamp unit 42H receives the return light when the infrared light emitted to the front of the vehicle is reflected by an object existing in front of the vehicle.
- the light is received by 47.
- the return light of the infrared light is photographed by the infrared camera 6B provided at a place different from the headlamp 4, and the black-and-white image by the photographed infrared light is processed by the image processing unit 18 to obtain the vehicle.
- the control unit 3 may detect the presence of a pedestrian or an oncoming vehicle in front of the vehicle. Further, by displaying the image taken by the infrared camera 6B on the monitor 19 provided in the vehicle, the driver of the vehicle 1 can confirm the existence of a pedestrian or an oncoming vehicle in front of the vehicle.
- the positions of the LEDs constituting the visible light source 44 and the infrared light source 45 are not limited to those shown in FIGS. 3 to 6, and may be arranged at positions different from those shown in FIGS. 3 to 6. ..
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Abstract
Description
車両の周辺に可視光を照射するための第一光源と、
前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、
前記第一光源から照射された前記可視光と前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する回転リフレクタと、
前記第二光源から出射され、対象物により反射された赤外光を受光する受光部と、
前記第一光源、前記第二光源および前記回転リフレクタを制御する制御部と、
を備え、
前記第二光源は、第一発光素子と、第二光学素子とを有し、
前記制御部は、前記第一発光素子および前記第二発光素子が同時に赤外光を出射しないように前記第一発光素子の赤外光の出射タイミングと前記第二発光素子の赤外光の出射タイミングとを異ならせる。
前記制御部は、前記第一走査範囲の前記水平方向に一回の走査が完了する度に前記第二走査範囲の前記水平方向に一回の走査を行うように構成されていてもよい。
前記制御部は、所定の時間毎に前記第一発光素子の赤外光の出射と前記第二発光素子の赤外光の出射とを切り替えるように構成されていてもよい。
車両の周辺に可視光を照射するための第一光源と、前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第一回転リフレクタと、を有する第一車両用灯具と、
前記車両の周辺に可視光を照射するための第三光源と、前記車両の周辺の情報を取得するために赤外光を出射する第四光源と、前記第三光源から照射された前記可視光および前記第四光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第二回転リフレクタと、を有する第二車両用灯具と、
前記第二光源から出射され対象物により反射された赤外光および前記第四光源から出射され前記対象物により反射された赤外光を受光する受光部と、
前記第二光源および前記第四光源を制御する制御部と、
を備え、
前記制御部は、前記第二光源および前記第四光源が同時に赤外光を出射しないように前記第二光源の赤外光の出射タイミングと前記第四光源の赤外光の出射タイミングとを異ならせる。
前記制御部は、前記第一走査範囲の前記水平方向に一回の走査が完了する度に前記第二走査範囲の前記水平方向に一回の走査を行うように構成されていてもよい。
前記制御部は、所定の時間毎に前記第二光源の赤外光の出射と前記第四光源の赤外光の出射とを切り替えるように構成されていてもよい。
車両の周辺に可視光を照射するための第一光源と、
前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、
前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する回転リフレクタと、
前記第二光源から出射され、対象物により反射された赤外光を受光する受光部と、を備え、
前記第二光源は、第一波長の赤外光を出射する第一発光素子と、前記第一波長とは異なる第二波長の赤外光を出射する第二発光素子とを有する。
車両の周辺に可視光を照射するための第一光源と、前記車両の周辺の情報を取得するために第一波長の赤外光を出射する第二光源と、前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第一回転リフレクタと、を有する第一車両用灯具と、
前記車両の周辺に可視光を照射するための第三光源と、前記車両の周辺の情報を取得するために前記第一波長とは異なる第二波長の赤外光を出射する第四光源と、前記第三光源から照射された前記可視光および前記第四光源から照射された前記赤外光を反射しながら回転し、前記仮想鉛直スクリーン上における水平方向前記可視光および前記赤外光を走査する第二回転リフレクタと、を有する第二車両用灯具と、
前記第二光源から出射され対象物により反射された赤外光および前記第四光源から出射され前記対象物により反射された赤外光を受光する受光部と、を備える。
図1に示すように、本実施形態に係る車両システム2は、車両制御部3(制御部の一例)と、ヘッドランプ4と、センサ5と、カメラ6と、レーダ7と、HMI(Human Machine Interface)8と、GPS(Global Positioning System)9と、無線通信部10と、地図情報記憶部11とを備えている。さらに、車両システム2は、ステアリングアクチュエータ12と、ステアリング装置13と、ブレーキアクチュエータ14と、ブレーキ装置15と、アクセルアクチュエータ16と、アクセル装置17とを備えている。
次に、本開示の第一実施形態に係る車両システム2の具体的構成について図2等を参照して説明する。図2は、車両システム2の一部の構成を模式的に示したブロック図である。車両システム2に搭載されるヘッドランプ4は、車両前部の左側と右側にそれぞれ設けられるが、図面の簡略化のため、図2では、左右のヘッドランプのうち左側のヘッドランプのみを図示している。
図3に示すように、ハイビーム用灯具ユニット42Hは、各構成部品を取り付けるためのブラケット60を備えている。ブラケット60は、ハイビーム用灯具ユニット42Hの不図示のハウジングに取り付けられている。ブラケット60には、可視光源44の一部および赤外光源45の一部が設けられた第一配線基板61が取り付けられている。第一配線基板61の右方には、ランプ制御部43の構成部品が収容された制御ボックス63が配置されている。また、ブラケット60の第一配線基板61が取り付けられた箇所とは離隔した箇所には、可視光源44の他の一部および赤外光源45の他の一部が設けられた第二配線基板62が取り付けられている。また、制御ボックス63の一部(ここでは、灯具前方側)には、フォトダイオード47が配置されている。
図5に示すように、第一配線基板61には、可視光源44として可視光を出射可能な複数(本例では、9つ)の発光素子(以下、可視光LEDと称す)44-1~44-9が配置されている。可視光LED44-1~44-9は、第一配線基板61の正面視において、可視光LED44-1から順に逆U字状となるように配列されている。これらの可視光LED44-1~44-9から出射された光により、ハイビーム用配光パターンのうち集光部が形成される。
このように、左側ヘッドランプの可視光LED44-10,44-11の配光(配光パターンP2)と右側ヘッドランプの可視光LED44-10,44-11の配光とが合成されることで、拡散部用配光パターンが形成される。そして、集光部用配光パターンP1と拡散部用配光パターンとが合成されることで図11に示されるハイビーム用配光パターンが形成される。
次に、本開示の第二実施形態に係る車両システムの具体的構成について説明する。
次に、本開示の第三実施形態について、図14および図15を参照して説明する。図14は、第三実施形態に係る左側ヘッドランプ4Lの赤外光源45Lおよび右側ヘッドランプ4Rの赤外光源45Rから出射される赤外光により照射される範囲を示した模式図である。図15は、図14の対象物により反射されてフォトダイオード47L,47Rにより受光された赤外光の受光強度を示した図である。
次に、本開示の第四実施形態について、説明する。
Claims (12)
- 車両の周辺に可視光を照射するための第一光源と、
前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、
前記第一光源から照射された前記可視光と前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する回転リフレクタと、
前記第二光源から出射され、対象物により反射された赤外光を受光する受光部と、
前記第一光源、前記第二光源および前記回転リフレクタを制御する制御部と、
を備え、
前記第二光源は、第一発光素子と、第二光学素子とを有し、
前記制御部は、前記第一発光素子および前記第二発光素子が同時に赤外光を出射しないように前記第一発光素子の赤外光の出射タイミングと前記第二発光素子の赤外光の出射タイミングとを異ならせる、車両用灯具。 - 前記第一発光素子から出射された赤外光が走査される第一走査範囲と、前記第二発光素子から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複しており、
前記制御部は、前記第一走査範囲の前記水平方向に一回の走査が完了する度に前記第二走査範囲の前記水平方向に一回の走査を行うように構成されている、請求項1に記載の車両用灯具。 - 前記第一発光素子から出射された赤外光が走査される第一走査範囲と、前記第二発光素子から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複しており、
前記制御部は、所定の時間毎に前記第一発光素子の赤外光の出射と前記第二発光素子の赤外光の出射とを切り替えるように構成されている、請求項1に記載の車両用灯具。 - 車両の周辺に可視光を照射するための第一光源と、前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第一回転リフレクタと、を有する第一車両用灯具と、
前記車両の周辺に可視光を照射するための第三光源と、前記車両の周辺の情報を取得するために赤外光を出射する第四光源と、前記第三光源から照射された前記可視光および前記第四光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第二回転リフレクタと、を有する第二車両用灯具と、
前記第二光源から出射され対象物により反射された赤外光および前記第四光源から出射され前記対象物により反射された赤外光を受光する受光部と、
前記第二光源および前記第四光源を制御する制御部と、
を備え、
前記制御部は、前記第二光源および前記第四光源が同時に赤外光を出射しないように前記第二光源の赤外光の出射タイミングと前記第四光源の赤外光の出射タイミングとを異ならせる、車両用灯具システム。 - 前記第二光源から出射された赤外光が走査される第一走査範囲と、前記第四光源から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複しており、
前記制御部は、前記第一走査範囲の前記水平方向に一回の走査が完了する度に前記第二走査範囲の前記水平方向に一回の走査を行うように構成されている、請求項4に記載の車両用灯具システム。 - 前記第二光源から出射された赤外光が走査される第一走査範囲と、前記第四光源から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複しており、
前記制御部は、所定の時間毎に前記第二光源の赤外光の出射と前記第四光源の赤外光の出射とを切り替えるように構成されている、請求項4に記載の車両用灯具システム。 - 車両の周辺に可視光を照射するための第一光源と、
前記車両の周辺の情報を取得するために赤外光を出射する第二光源と、
前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する回転リフレクタと、
前記第二光源から出射され、対象物により反射された赤外光を受光する受光部と、を備え、
前記第二光源は、第一波長の赤外光を出射する第一発光素子と、前記第一波長とは異なる第二波長の赤外光を出射する第二発光素子とを有する、車両用灯具。 - 前記第一発光素子から出射された赤外光が走査される第一走査範囲と、前記第二発光素子から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複する、請求項7に記載の車両用灯具。
- 車両の周辺に可視光を照射するための第一光源と、前記車両の周辺の情報を取得するために第一波長の赤外光を出射する第二光源と、前記第一光源から照射された前記可視光および前記第二光源から照射された前記赤外光を反射しながら回転し、前記車両から所定距離の位置に配置される仮想鉛直スクリーン上における水平方向に前記可視光および前記赤外光を走査する第一回転リフレクタと、を有する第一車両用灯具と、
前記車両の周辺に可視光を照射するための第三光源と、前記車両の周辺の情報を取得するために前記第一波長とは異なる第二波長の赤外光を出射する第四光源と、前記第三光源から照射された前記可視光および前記第四光源から照射された前記赤外光を反射しながら回転し、前記仮想鉛直スクリーン上における水平方向前記可視光および前記赤外光を走査する第二回転リフレクタと、を有する第二車両用灯具と、
前記第二光源から出射され対象物により反射された赤外光および前記第四光源から出射され前記対象物により反射された赤外光を受光する受光部と、を備える、車両用灯具システム。 - 前記第二光源から出射された赤外光が走査される第一走査範囲と、前記第四光源から出射された赤外光が走査される第二走査範囲とは少なくとも一部が重複する、請求項9に記載の車両用灯具システム。
- 前記第一車両用灯具は、左側ヘッドランプであり、前記第二車両用灯具は、右側ヘッドランプである、請求項4から請求項6、請求項9および請求項10のいずれか一項に記載の車両用灯具システム。
- 前記受光部は、前記第一車両用灯具内に配置され、前記第二光源から出射され前記対象物により反射された赤外光を受光する第一受光部と、前記第二車両用灯具内に配置され、前記第四光源から出射され前記対象物により反射された赤外光を受光する第二受光部と、を備える、請求項4から請求項6および請求項9から請求項11の何れか一項に記載の車両用灯具システム。
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| WO2017073250A1 (ja) * | 2015-10-27 | 2017-05-04 | 株式会社小糸製作所 | 車両用灯具 |
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| US8581982B1 (en) * | 2007-07-30 | 2013-11-12 | Flir Systems, Inc. | Infrared camera vehicle integration systems and methods |
| JP2015182660A (ja) * | 2014-03-25 | 2015-10-22 | スタンレー電気株式会社 | 照射装置 |
| JP2016018668A (ja) * | 2014-07-08 | 2016-02-01 | パナソニックIpマネジメント株式会社 | 照明装置と、それを搭載した自動車 |
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