WO2014162683A1 - 車両用灯具 - Google Patents

車両用灯具 Download PDF

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Publication number
WO2014162683A1
WO2014162683A1 PCT/JP2014/001640 JP2014001640W WO2014162683A1 WO 2014162683 A1 WO2014162683 A1 WO 2014162683A1 JP 2014001640 W JP2014001640 W JP 2014001640W WO 2014162683 A1 WO2014162683 A1 WO 2014162683A1
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WO
WIPO (PCT)
Prior art keywords
light source
laser beam
light
laser
peak wavelength
Prior art date
Application number
PCT/JP2014/001640
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
津田　俊明
増田　剛
Original Assignee
株式会社小糸製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to EP14780115.3A priority Critical patent/EP2985519B1/de
Priority to JP2015509891A priority patent/JPWO2014162683A1/ja
Priority to CN201480017475.XA priority patent/CN105074328B/zh
Priority to EP17182349.5A priority patent/EP3279553B1/de
Publication of WO2014162683A1 publication Critical patent/WO2014162683A1/ja

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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
    • 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
    • F21S41/125—Coloured light
    • 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
    • F21S41/16—Laser light sources
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the present invention relates to a vehicular lamp, and more particularly to a vehicular lamp used in a vehicle such as an automobile.
  • Patent Document 1 discloses a vehicular lamp including a semiconductor light source, a mirror that reflects light emitted from the semiconductor light source to the periphery of the vehicle, and a scanning actuator that reciprocally rotates the mirror.
  • a scanning actuator drives a mirror at a high speed, and scans the reflected light of the mirror in a predetermined irradiation range around the vehicle, thereby forming a predetermined light distribution pattern in front of the vehicle (hereinafter referred to as “lighting pattern”). Then, as appropriate, such an optical system is referred to as a scanning optical system).
  • red LED, green LED, and blue LED are combined and used as a light source.
  • the laser light source can emit light having excellent directivity and convergence compared to LEDs. Therefore, the laser light source can improve the light utilization rate in the vehicular lamp as compared with the LED. Further, since the light utilization rate of the vehicular lamp can be improved, the laser light source can be suitably used in a vehicular lamp including the above-described scanning optical system in which the light utilization rate is likely to be reduced. Thus, as a result of intensive studies on a vehicular lamp using a laser light source, the present inventors have found that there is room for improving the performance of a conventional vehicular lamp when a laser light source is used.
  • the present invention has been made in view of such circumstances, and one of its purposes is to provide a technique for improving the performance of a vehicular lamp provided with a laser light source.
  • Another object of the present invention is to provide a technique for improving the color rendering properties of a vehicular lamp provided with a laser light source.
  • an aspect of the present invention is a vehicle lamp.
  • the vehicular lamp includes a first light source that emits a first laser beam having a peak wavelength in a wavelength range of 450 nm to 475 nm, a peak wavelength in a wavelength range of 525 nm to 555 nm, and a peak of the first laser beam.
  • a second light source that emits a second laser beam having an interval between the wavelength and the peak wavelength of 65 nm or more and 95 nm or less; a peak wavelength in a wavelength region of 605 nm or more and 620 nm or less;
  • a third light source that emits a third laser beam that has an interval with its own peak wavelength of 60 nm or more and less than 80 nm, and an interval between the peak wavelength of the first laser beam and its own peak wavelength is less than 170 nm;
  • a condensing unit that collects the third laser light to generate white laser light. According to this aspect, it is possible to improve the performance of the vehicular lamp including the laser light source.
  • the third laser light may have a peak wavelength in a wavelength range of 610 nm or more and 620 nm or less.
  • the first laser beam may have a peak wavelength in a wavelength range of 450 nm or more and 470 nm or less. According to these aspects, the performance of the vehicular lamp including the laser light source can be further improved. Note that any combination of the above-described constituent elements, and those obtained by replacing the constituent elements and expressions of the present invention with each other among methods, apparatuses, systems, etc. are also effective as an aspect of the present invention.
  • the vehicular lamp includes a first light source that emits blue first laser light, a second light source that emits green second laser light, a third light source that emits yellow or orange third laser light, A fourth light source that emits a red fourth laser beam; and a condensing unit that collects the laser beams to generate a white laser beam. According to this aspect, it is possible to improve the color rendering properties in the vehicular lamp including the laser light source.
  • the first laser beam has a peak wavelength in a wavelength range of 450 nm to 470 nm
  • the second laser beam has a peak wavelength in a wavelength range of 510 nm to 550 nm
  • the third laser beam is
  • the fourth laser beam may have a peak wavelength in a wavelength range of 630 nm to 650 nm
  • the fourth wavelength may have a peak wavelength in a wavelength range of 570 nm to 612 nm.
  • the third laser beam may have a peak wavelength in a wavelength range of 580 nm to 600 nm. According to this aspect, it is possible to easily improve the performance of the vehicular lamp. Note that any combination of the above-described constituent elements, and those obtained by replacing the constituent elements and expressions of the present invention with each other among methods, apparatuses, systems, etc. are also effective as an aspect of the present invention.
  • FIG. 5A is a diagram showing the spectral distribution of a conventional white LED.
  • FIG. 5B is a diagram showing the spectral distribution of the RGB laser light source.
  • FIG. 5C is a table showing the color rendering index Ra and R9 and the theoretical efficiency of the RGB laser light source and the white LED. It is a table
  • FIG. 15A is a diagram showing the spectral distribution of a conventional white LED.
  • FIG. 15A is a diagram showing the spectral distribution of a conventional white LED.
  • FIG. 15B is a diagram showing the spectral distribution of the RGB laser light source.
  • FIG. 15C is a table showing the color rendering index Ra and R9 and the theoretical efficiency of the RGB laser light source and the white LED.
  • FIG. 16A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 16B is a diagram illustrating the relationship between the chromaticity calculation result and the white region.
  • FIG. 17A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 17B is a diagram illustrating the relationship between the chromaticity calculation result and the white region.
  • FIG. 18A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 18B is a diagram showing the relationship between the calculation result of chromaticity and the white area.
  • FIG. 19A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 19B is a diagram showing the relationship between the chromaticity calculation result and the white region.
  • FIG. 20A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 20B is a diagram illustrating the relationship between the chromaticity calculation result and the white region.
  • FIG. 21A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 21B is a diagram showing the relationship between the chromaticity calculation result and the white region.
  • FIG. 1 is a vertical sectional view showing a schematic structure of a vehicular lamp according to a first embodiment.
  • FIG. 1 illustrates a state where the inside of the light source unit 100 is seen through. Further, illustration of the permanent magnets 312 and 314 of the scanning unit 300 is omitted.
  • the vehicular lamp according to the present embodiment is, for example, a vehicular headlamp apparatus that includes a pair of headlamp units disposed on the left and right sides in front of the vehicle. Since the pair of headlamp units have substantially the same configuration, FIG. 1 shows the configuration of one of the left and right headlamp units as the vehicular lamp 1.
  • the structure of the vehicle lamp 1 demonstrated below is an illustration, Comprising: It is not limited to the following structures.
  • the vehicle lamp 1 includes a lamp body 2 having an opening on the front side of the vehicle, and a translucent cover 4 that covers the opening of the lamp body 2.
  • the translucent cover 4 is made of translucent resin or glass.
  • a support plate 6, a light source unit 100, a scanning unit 300, and a control unit 400 are accommodated in the lamp chamber 3 formed by the lamp body 2 and the translucent cover 4.
  • the light source unit 100 and the scanning unit 300 are supported at predetermined positions in the lamp chamber 3 by the support plate 6.
  • the support plate 6 is connected to the lamp body 2 at the corners by aiming screws 8.
  • the light source unit 100 includes a first light source 102, a second light source 104, a third light source 106, a heat sink 110, a condensing unit 200, and the like.
  • the light source unit 100 is fixed to the front surface of the support plate 6 so that the heat sink 110 is in contact with the support plate 6.
  • the internal structure of the light source unit 100 will be described in detail later.
  • the scanning unit 300 includes a reflecting mirror 318.
  • the structure of the scanning unit 300 will be described in detail later.
  • the scanning unit 300 has a positional relationship with the light source unit 100 so as to reflect the laser light emitted from the light source unit 100 to the front of the lamp, and the projection 300 projects from the front surface of the support plate 6 to the front of the lamp.
  • the protrusion 10 includes a pivot mechanism 10a, and the scanning unit 300 is supported by the protrusion 10 via the pivot mechanism 10a.
  • the protrusion part 10 is provided with the actuator 10b for support which has a rod and the motor which expands / contracts this rod to the lamp front-back direction. The tip of the rod is connected to the scanning unit 300.
  • the projecting portion 10 can swing the scanning portion 300 around the pivot mechanism 10a by expanding and contracting the rod, thereby adjusting the vertical inclination angle (pitch angle) of the scanning portion 300 (initial aiming adjustment). Etc.).
  • the support actuator 10 b is connected to the control unit 400.
  • the control unit 400 includes a lamp ECU that selectively executes a control program and generates various control signals, a ROM that stores various control programs, a RAM that is used as a work area for data storage and program execution by the lamp ECU, and the like.
  • the control unit 400 controls driving of the supporting actuator 10b and a scanning actuator described later, turning on / off of the first light source 102 to the third light source 106, and the like.
  • the control unit 400 is fixed to the lamp body 2 on the rear side of the lamp with respect to the support plate 6.
  • the position where the control unit 400 is provided is not particularly limited to this.
  • the vehicular lamp 1 can adjust the optical axis in the horizontal direction and the vertical direction by rotating the aiming screw 8 and adjusting the posture of the support plate 6.
  • An extension member 12 having an opening that allows the light reflected by the scanning unit 300 to travel forward of the lamp is provided on the lamp front side of the light source unit 100 and the scanning unit 300 in the lamp chamber 3. Then, the structure of the light source unit and scanning part which comprise the vehicle lamp 1 is demonstrated in detail.
  • FIG. 2 is a side view showing a schematic structure of the light source unit.
  • FIG. 2 shows a state where the inside of the light source unit 100 is seen through.
  • the light source unit 100 includes a first light source 102, a second light source 104, a third light source 106, a heat sink 110, a first lens 112, a second lens 114, a third lens 116, a light transmission unit 120, a condensing unit 200, and the like. .
  • the first light source 102 emits a first laser beam B having a peak wavelength in a wavelength range of approximately blue light.
  • the second light source 104 emits a second laser beam G having a peak wavelength in the wavelength range of green light.
  • the third light source 106 emits a third laser light O having a peak wavelength in the wavelength range of approximately orange light. Details of the peak wavelengths of the first laser beam B to the third laser beam O will be described later.
  • the first light source 102 to the third light source 106 are constituted by, for example, laser diodes and are mounted on a common substrate 109. Each light source may be configured by a laser device other than the laser diode.
  • the first light source 102, the second light source 104, and the third light source 106 are disposed such that the respective laser light emission surfaces face the front side of the lamp and the substrate 109 faces the rear side of the lamp, and the front surface of the heat sink 110 Attached to.
  • the heat sink 110 is formed of a material having high thermal conductivity such as aluminum so that heat generated by each light source can be efficiently recovered.
  • the surface of the heat sink 110 on the rear side of the lamp is in contact with the support plate 6 (see FIG. 1).
  • Each light source radiates heat through the substrate 109, the heat sink 110, and the support plate 6.
  • the first lens 112, the second lens 114, and the third lens 116 are constituted by, for example, collimating lenses.
  • the first lens 112 is provided on the optical path of the first laser beam B between the first light source 102 and the condensing unit 200, and the first laser beam B traveling from the first light source 102 toward the condensing unit 200 is parallel light.
  • the second lens 114 is provided on the optical path of the second laser light G between the second light source 104 and the condensing unit 200, and converts the second laser light G traveling from the second light source 104 toward the condensing unit 200 into parallel light.
  • the third lens 116 is provided on the optical path of the third laser light O between the third light source 106 and the condensing unit 200, and the third laser light O traveling from the third light source 106 toward the condensing unit 200 is parallel light. Convert to
  • the light transmission part 120 is fitted in the opening 101 provided in the housing of the light source unit 100.
  • White laser light W which will be described later, passes from the condensing unit 200 through the light transmitting unit 120 toward the scanning unit 300.
  • the condensing unit 200 (polarization unit) aggregates the first laser beam B, the second laser beam G, and the third laser beam O to generate the white laser beam W.
  • the condenser 200 includes a first dichroic mirror 202, a second dichroic mirror 204, and a third dichroic mirror 206.
  • the first dichroic mirror 202 is a mirror that reflects at least the first laser beam B, and is arranged so as to reflect the first laser beam B that has passed through the first lens 112 toward the light transmission unit 120.
  • the second dichroic mirror 204 is a mirror that reflects at least the second laser light G and transmits the first laser light B, and reflects the second laser light G that has passed through the second lens 114 toward the light transmission unit 120.
  • the third dichroic mirror 206 is a mirror that reflects at least the third laser light O and transmits the first laser light B and the second laser light G, and transmits the third laser light O that has passed through the third lens 116 to a light transmitting portion. It arrange
  • the dichroic mirrors are positioned so that the optical paths of the reflected laser beams are parallel to each other, and the laser beams are gathered and transmitted through the light transmission unit 120.
  • the first dichroic mirror 202 to the third dichroic mirror 206 are arranged so that regions (laser light reflection points) where the laser light strikes in each dichroic mirror are aligned.
  • the first laser beam B emitted from the first light source 102 is reflected by the first dichroic mirror 202 to the second dichroic mirror 204 side.
  • the second laser light G emitted from the second light source 104 is reflected by the second dichroic mirror 204 to the third dichroic mirror 206 side and is superimposed on the first laser light B transmitted through the second dichroic mirror 204.
  • the third laser light O emitted from the third light source 106 is reflected by the third dichroic mirror 206 to the light transmission unit 120 side, and the first laser light B and the second laser light transmitted through the third dichroic mirror 206. It is superimposed on the collective light of G. As a result, white laser light W is formed.
  • the white laser light W travels toward the scanning unit 300 through the light transmission unit 120.
  • FIG. 3 is a schematic perspective view of the scanning unit when observed from the front side of the lamp.
  • the scanning unit 300 is a mechanism for scanning a laser beam emitted from the first light source 102 to the third light source 106 to form a predetermined light distribution pattern (see FIG. 4).
  • the scanning unit 300 includes a base 302, a first rotating body 304, a second rotating body 306, a first torsion bar 308, a second torsion bar 310, permanent magnets 312 and 314, a terminal unit 316, a reflecting mirror 318, and the like.
  • the base 302 is a frame having an opening 302a at the center, and is fixed to the tip of the protruding portion 10 (see FIG.
  • the base 302 is provided with a terminal portion 316 at a predetermined position.
  • a first rotating body 304 is disposed in the opening 302a.
  • the first rotating body 304 is a frame having an opening 304a at the center, and is rotated left and right (vehicle width direction) with respect to the base 302 by a first torsion bar 308 extending from the lower rear side of the lamp to the upper front side of the lamp. It is supported movably.
  • the second rotating body 306 is disposed in the opening 304 a of the first rotating body 304.
  • the second rotating body 306 is a rectangular flat plate, and is supported by a second torsion bar 310 extending in the vehicle width direction so as to be rotatable up and down (vertical direction) with respect to the first rotating body 304.
  • the second rotating body 306 rotates left and right together with the first rotating body 304 when the first rotating body 304 rotates left and right with the first torsion bar 308 as a rotation axis.
  • a reflecting mirror 318 is provided on the surface of the second rotating body 306 by a method such as plating or vapor deposition.
  • the base 302 is provided with a pair of permanent magnets 312 at positions orthogonal to the extending direction of the first torsion bar 308.
  • the permanent magnet 312 forms a magnetic field orthogonal to the first torsion bar 308.
  • a first coil (not shown) is wired to the first rotating body 304, and the first coil is connected to the control unit 400 (see FIG. 1) via a terminal portion 316.
  • the base 302 is provided with a pair of permanent magnets 314 at positions orthogonal to the extending direction of the second torsion bar 310.
  • the permanent magnet 314 forms a magnetic field orthogonal to the second torsion bar 310.
  • a second coil (not shown) is wired to the second rotating body 306, and the second coil is connected to the control unit 400 via the terminal portion 316.
  • the first coil and permanent magnet 312 and the second coil and permanent magnet 314 constitute a scanning actuator.
  • the driving of the scanning actuator is controlled by the control unit 400.
  • the control unit 400 controls the magnitude and direction of the drive voltage flowing through the first coil and the second coil.
  • the 1st rotation body 304 and the 2nd rotation body 306 reciprocate to the left and right, and the 2nd rotation body 306 independently reciprocates up and down.
  • the reflecting mirror 318 reciprocates vertically and horizontally.
  • the white laser light W emitted from the light source unit 100 is reflected by the reflecting mirror 318 in front of the lamp.
  • the scanning unit 300 scans the front of the vehicle with the white laser light W by the reciprocating rotation of the reflecting mirror 318. For example, the scanning unit 300 rotates the reflecting mirror 318 in a scanning range wider than the light distribution pattern formation region.
  • the control unit 400 turns on the first light source 102 to the third light source 106 when the turning position of the reflecting mirror 318 is at a position corresponding to the light distribution pattern formation region.
  • the white laser light W is distributed to the region where the light distribution pattern is formed, and a predetermined light distribution pattern is formed in front of the vehicle.
  • FIG. 4 is a diagram showing an example of a light distribution pattern formed by the vehicular lamp according to the present embodiment.
  • FIG. 4 shows a light distribution pattern formed on a virtual vertical screen placed at a predetermined position in front of the lamp, for example, at a position 25 m ahead of the lamp. Further, the scanning trajectory of the laser beam is schematically shown by a broken line and a solid line.
  • the scanning unit 300 can scan a rectangular scanning area SA extending in the vehicle width direction with a laser beam.
  • the control unit 400 emits the laser light from the first light source 102 to the third light source 106, and the scanning position is the low beam distribution pattern.
  • the emission of the laser light from each light source is stopped.
  • the low beam light distribution pattern Lo having the oncoming lane side cutoff line CL1, the own lane side cutoff line CL2, and the oblique cutoff line CL3 is formed.
  • the vehicular lamp 1 can also form other light distribution patterns such as a high beam light distribution pattern.
  • FIG. 5A is a diagram showing the spectral distribution of a conventional white LED.
  • FIG. 5B is a diagram showing the spectral distribution of the RGB laser light source.
  • FIG. 5C is a table showing the color rendering index Ra and R9 and the theoretical efficiency of the RGB laser light source and the white LED.
  • 5A and 5B show graphs in which the horizontal axis represents wavelength (nm) and the vertical axis represents relative irradiance.
  • the RGB laser light source is a light source that emits white laser light by combining red laser light having a peak wavelength of 639 nm, green laser light having a peak wavelength of 532 nm, and blue laser light having a peak wavelength of 465 nm.
  • the white light emitted from the white LED exhibits high irradiance in a wider wavelength range than the RGB laser light source.
  • the white light emitted from the RGB laser light source has a bandwidth (half-value width) in each of the blue light wavelength range, the green light wavelength range, and the red light wavelength range. ) Having a very narrow peak wavelength.
  • the average color rendering index Ra, special color rendering index R9, and theoretical efficiency (lm / W) of the light emitted by the white LED and the RGB laser light source having such spectral distribution characteristics are as shown in FIG. .
  • the numerical values shown in FIG. 5C are values when the chromaticity (x, y) and the color temperature (K) of each irradiation light are adjusted to the chromaticity and color temperature generally required for a vehicle lamp. is there.
  • the “theoretical efficiency” means the light emission efficiency when all the energy input to the light source is output as visible light.
  • the RGB laser light source shows lower values for Ra, R9 and theoretical efficiency than the white LED.
  • the first laser beam B to the third laser beam O have the following characteristics for each peak wavelength. That is, the first laser beam B emitted from the first light source 102 has a peak wavelength in a wavelength range of 450 nm to 475 nm.
  • the second laser light G emitted from the second light source 104 has a peak wavelength in a wavelength range of 525 nm or more and 555 nm or less.
  • the third laser light O emitted from the third light source 106 has a peak wavelength in a wavelength range of 605 nm or more and 620 nm or less.
  • the interval between the peak wavelength of the first laser beam B and the peak wavelength of the second laser beam G is 65 nm or more and 95 nm or less.
  • the interval between the peak wavelength of the second laser beam G and the peak wavelength of the third laser beam O is not less than 60 nm and less than 80 nm. Further, the interval between the peak wavelength of the first laser beam B and the peak wavelength of the third laser beam O is less than 170 nm.
  • fills can be irradiated. Therefore, a laser light source suitable as a light source for a vehicle lamp can be provided.
  • the third laser light O has a peak wavelength in a wavelength range of 610 nm to 620 nm.
  • R9 is an evaluation of the color rendering properties of red.
  • the vehicular lamp is required to more accurately represent the red color of the tail lamps of other vehicles. Therefore, R9 is an important characteristic with Ra for a vehicle lamp. Therefore, the performance of the vehicular lamp can be further improved by improving the R9 of the irradiation light.
  • the first laser beam B preferably has a peak wavelength in a wavelength range of 450 nm or more and 470 nm or less.
  • the peak wavelength of the first laser beam B By setting the peak wavelength of the first laser beam B to 450 nm or more and 470 nm or less, it is possible to more reliably impart a good theoretical efficiency to the vehicular lamp. Thereby, the improvement of the brightness
  • Ra Average color rendering index
  • FIG. 6, FIG. 7 and FIG. 8 are tables showing calculation results of the average color rendering index Ra.
  • “second-first” indicates the interval between the peak wavelengths of the second laser beam G and the first laser beam B
  • “third-second” indicates the third laser beam O.
  • the interval between the peak wavelengths of the second laser beam G and “third-first” means the interval between the peak wavelengths of the third laser beam O and the first laser beam B, respectively.
  • “Ra 2nd”, “3rd 2nd” and “3rd 1st” indicate that the respective intervals do not satisfy the above-mentioned conditions.
  • "" Indicates that the average color rendering index Ra is less than 60, and "determination" indicates that the determination is B.
  • the irradiation light of the vehicular lamp is such that the peak wavelength of the first laser beam B is 450 nm to 475 nm, the peak wavelength of the second laser beam G is 525 nm to 555 nm, and the third laser beam.
  • the peak wavelength of O is 605 nm or more and 620 nm or less, the peak wavelength interval between the first laser beam B and the second laser beam G is 65 nm or more and 95 nm or less, and the peak wavelength interval between the second laser beam G and the third laser beam O is 60 nm.
  • Ra is 60 or more and shows good Ra.
  • R9 (Calculation of special color rendering index R9) was calculated for the irradiation light of the vehicular lamp whose determination was “A” in the Ra calculation described above.
  • the chromaticity and color temperature were set in the same manner as the calculation of Ra.
  • R9 can be calculated according to the method defined in Japanese Industrial Standard JIS Z 8726.
  • R9 ⁇ 37.4 (see FIG. 5C) of the white LED is set as a threshold value, and the case where R9 is ⁇ 37.4 or more is evaluated as “AA”. Was less than ⁇ 37.4 and was evaluated as “A”.
  • FIGS. 9 and 10 are tables showing calculation results of the special color rendering index R9.
  • “second-first”, “third-second”, and “third-first” are the same as those in FIGS.
  • the “third light source”, “R9”, and “determination” cells are hatched with respect to the irradiation light whose R9 evaluation is A.
  • FIGS. 11 and 12 are tables showing calculation results of theoretical efficiency.
  • “second-first”, “third-second”, and “third-first” are the same as those in FIGS.
  • the cells of “first light source”, “theoretical efficiency”, and “determination” are hatched with respect to irradiation light whose theoretical efficiency is AA.
  • the irradiation light of the vehicular lamp has a theoretical efficiency of 330 or more when the peak wavelength of the first laser beam B is 450 nm to 470 nm, and exhibits a good theoretical efficiency. Was confirmed.
  • the vehicular lamp 1 includes the first light source 102 that emits the first laser beam B having a peak wavelength in the wavelength range of 450 nm to 475 nm, and the wavelength range of 525 nm to 555 nm.
  • a second light source 104 that emits a second laser beam G having a peak wavelength at which the interval between the peak wavelength of the first laser beam B and its own peak wavelength is 65 nm to 95 nm, and a wavelength of 605 nm to 620 nm
  • the peak wavelength in the region, the interval between the peak wavelength of the second laser beam G and its own peak wavelength is not less than 60 nm and less than 80 nm, and the interval between the peak wavelength of the first laser beam B and its own peak wavelength is
  • a third light source 106 that emits a third laser beam O that is less than 170 nm, and a condensing unit 20 that collects the first to third laser beams to generate a white laser beam W. Provided with a door.
  • the color rendering property of the vehicle lamp provided with a laser light source can be improved. Therefore, the performance of the vehicular lamp 1 can be improved.
  • the light utilization rate of the vehicular lamp is improved while suppressing a decrease in the visibility of the driver or improving the visibility. Can be made.
  • FIG. 13 is a vertical sectional view showing a schematic structure of the vehicular lamp according to the second embodiment.
  • FIG. 13 illustrates a state in which the inside of the light source unit 1100 is seen through. Further, illustration of the permanent magnets 312 and 314 of the scanning unit 300 is omitted.
  • the vehicular lamp according to the present embodiment is, for example, a vehicular headlamp apparatus that includes a pair of headlamp units disposed on the left and right sides in front of the vehicle. Since the pair of headlamp units have substantially the same configuration, FIG. 13 shows the configuration of either the left or right headlamp unit as the vehicular lamp 1.
  • the structure of the vehicle lamp 1 demonstrated below is an illustration, Comprising: It is not limited to the following structures.
  • the vehicle lamp 1 includes a lamp body 2 having an opening on the front side of the vehicle, and a translucent cover 4 that covers the opening of the lamp body 2.
  • the translucent cover 4 is made of translucent resin or glass.
  • a support plate 6 In the lamp chamber 3 formed by the lamp body 2 and the translucent cover 4, a support plate 6, a light source unit 1100, a scanning unit 300, and a control unit 400 are accommodated.
  • the light source unit 1100 and the scanning unit 300 are supported at predetermined positions in the lamp chamber 3 by the support plate 6.
  • the support plate 6 is connected to the lamp body 2 at the corners by aiming screws 8.
  • the light source unit 1100 includes a first light source 1102, a second light source 1104, a third light source 1106, a fourth light source 1108, a heat sink 1110, a condensing unit 1200, and the like.
  • the light source unit 1100 is fixed to the front surface of the support plate 6 so that the heat sink 1110 contacts the support plate 6.
  • the internal structure of the light source unit 1100 will be described in detail later.
  • the scanning unit 300 has the same structure as that of the first embodiment.
  • the control unit 400 has the same structure as that of the first embodiment.
  • the control unit 400 controls driving of the supporting actuator 10b and a scanning actuator described later, turning on / off of the first light source 1102 to the fourth light source 1108, and the like.
  • the control unit 400 is fixed to the lamp body 2 on the rear side of the lamp with respect to the support plate 6.
  • the position where the control unit 400 is provided is not particularly limited to this.
  • the vehicular lamp 1 can adjust the optical axis in the same manner as in the first embodiment.
  • An extension member 12 having an opening that allows the light reflected by the scanning unit 300 to travel forward of the lamp is provided on the front side of the light source unit 1100 and the scanning unit 300 in the lamp chamber 3. Then, the structure of the light source unit which comprises the vehicle lamp 1 is demonstrated in detail.
  • FIG. 14 is a side view showing a schematic structure of the light source unit.
  • FIG. 14 shows a state where the inside of the light source unit 1100 is seen through.
  • the light source unit 1100 includes a first light source 1102, a second light source 1104, a third light source 1106, a fourth light source 1108, a heat sink 1110, a first lens 1112, a second lens 1114, a third lens 1116, a fourth lens 1118, and light transmission.
  • the first light source 1102 emits a blue first laser beam B2.
  • the second light source 1104 emits the green second laser light G2.
  • the third light source 1106 emits yellow or orange third laser light O2.
  • the fourth light source 1108 emits a red fourth laser beam R2. Details of the peak wavelengths of the first laser beam B2 to the fourth laser beam R2 will be described later.
  • the first light source 1102 to the fourth light source 1108 are composed of, for example, laser diodes and are mounted on a common substrate 1109. Each light source may be configured by a laser device other than the laser diode.
  • the first light source 1102, the second light source 1104, the third light source 1106, and the fourth light source 1108 are arranged so that the respective laser light emission surfaces face the front side of the lamp, and the substrate 1109 faces the rear side of the lamp. It is attached to the front side of the lamp.
  • the heat sink 1110 is formed of a material having high thermal conductivity such as aluminum so that heat generated by each light source can be efficiently recovered.
  • the surface of the heat sink 1110 on the rear side of the lamp is in contact with the support plate 6 (see FIG. 13). Each light source radiates heat through the substrate 1109, the heat sink 1110, and the support plate 6.
  • the first lens 1112, the second lens 1114, the third lens 1116, and the fourth lens 1118 are configured by, for example, collimating lenses.
  • the first lens 1112 is provided on the optical path of the first laser beam B2 between the first light source 1102 and the condensing unit 1200, and the first laser beam B2 traveling from the first light source 1102 toward the condensing unit 1200 is parallel light.
  • the second lens 1114 is provided on the optical path of the second laser light G2 between the second light source 1104 and the condensing unit 1200, and the second laser light G2 traveling from the second light source 1104 to the condensing unit 1200 is parallel light.
  • the third lens 1116 is provided on the optical path of the third laser light O2 between the third light source 1106 and the condensing unit 1200, and the third laser light O2 traveling from the third light source 1106 toward the condensing unit 1200 is parallel light.
  • Convert to The fourth lens 1118 is provided on the optical path of the fourth laser light R2 between the fourth light source 1108 and the condensing unit 1200, and the fourth laser light R2 traveling from the fourth light source 1108 toward the condensing unit 1200 is parallel light.
  • the light transmitting portion 1120 is fitted into an opening 1101 provided in the housing of the light source unit 1100.
  • White laser light W2 which will be described later, passes from the light condensing unit 1200 through the light transmitting unit 1120 toward the scanning unit 300.
  • the condensing unit 1200 (polarization unit) aggregates the first laser beam B2, the second laser beam G2, the third laser beam O2, and the fourth laser beam R2 to generate the white laser beam W2.
  • the condensing unit 1200 includes a first dichroic mirror 1202, a second dichroic mirror 1204, a third dichroic mirror 1206, and a fourth dichroic mirror 1208.
  • the first dichroic mirror 1202 is a mirror that reflects at least the first laser beam B2 and transmits the second laser beam G2, the third laser beam O2, and the fourth laser beam R2, and the first laser that has passed through the first lens 1112. It arrange
  • the second dichroic mirror 1204 is a mirror that reflects at least the second laser light G2 and transmits the third laser light O2 and the fourth laser light R2, and transmits the second laser light G2 that has passed through the second lens 1114 as a light transmission unit. It arrange
  • the third dichroic mirror 1206 is a mirror that reflects at least the third laser light O2 and transmits the fourth laser light R2, and reflects the third laser light O2 that has passed through the third lens 1116 toward the light transmission portion 1120.
  • the fourth dichroic mirror 1208 is a mirror that reflects at least the fourth laser light R 2, and is disposed so as to reflect the fourth laser light R 2 that has passed through the fourth lens 1118 toward the light transmission unit 1120.
  • the dichroic mirrors are positioned so that the optical paths of the reflected laser beams are parallel, and the laser beams are gathered and transmitted through the light transmitting portion 1120.
  • the first dichroic mirror 1202 to the fourth dichroic mirror 1208 are arranged such that regions (laser light reflection points) where the laser light strikes in each dichroic mirror are aligned.
  • the fourth laser light R2 emitted from the fourth light source 1108 is reflected by the fourth dichroic mirror 1208 to the third dichroic mirror 1206 side.
  • the third laser light O2 emitted from the third light source 1106 is reflected by the third dichroic mirror 1206 to the second dichroic mirror 1204 side and is superimposed on the fourth laser light R2 transmitted through the third dichroic mirror 1206.
  • the second laser light G2 emitted from the second light source 1104 is reflected by the second dichroic mirror 1204 to the first dichroic mirror 1202 side and transmitted through the second dichroic mirror 1204 and the third laser light.
  • the light O2 is superimposed on the collective light.
  • the first laser light B2 emitted from the first light source 1102 is reflected by the first dichroic mirror 1202 to the light transmitting portion 1120 side, and transmitted through the first dichroic mirror 1202, the fourth laser light R2 and the third laser light. O2 and the collective light of the second laser light G2 are superimposed. As a result, white laser light W2 is formed.
  • the white laser light W2 travels toward the scanning unit 300 through the light transmission unit 1120.
  • the scanning unit 300 is a mechanism for scanning a laser beam emitted from the first light source 1102 to the fourth light source 1108 to form a predetermined light distribution pattern (see FIG. 4). . Since the scanning unit 300 has the same structure as that of the first embodiment, detailed description thereof is omitted.
  • the white laser light W2 emitted from the light source unit 1100 is reflected forward of the lamp by the reflecting mirror 318.
  • the scanning unit 300 scans the front of the vehicle with the white laser light W2 by the reciprocating rotation of the reflecting mirror 318. For example, the scanning unit 300 rotates the reflecting mirror 318 in a scanning range wider than the light distribution pattern formation region.
  • the control unit 400 turns on the first light source 1102 to the fourth light source 1108 when the rotational position of the reflecting mirror 318 is at a position corresponding to the light distribution pattern formation region.
  • the white laser light W2 is distributed to the light distribution pattern formation region, and a predetermined light distribution pattern is formed in front of the vehicle.
  • the light distribution pattern formed by the vehicular lamp according to the present embodiment is the same as that of the first embodiment.
  • the scanning unit 300 can scan a rectangular scanning area SA extending in the vehicle width direction with laser light.
  • the control unit 400 emits the laser light from the first light source 1102 to the fourth light source 1108, and the scanning position is the low beam distribution pattern.
  • the emission of the laser light from each light source is stopped.
  • the low beam light distribution pattern Lo having the opposite lane side cut-off line CL1, the own lane side cut-off line CL2, and the oblique cut-off line CL3 is formed.
  • the vehicular lamp 1 can also form other light distribution patterns such as a high beam light distribution pattern.
  • FIG. 15A is a diagram showing the spectral distribution of a conventional white LED.
  • FIG. 15B is a diagram showing the spectral distribution of the RGB laser light source.
  • FIG. 15C is a table showing the color rendering index Ra and R9 and the theoretical efficiency of the RGB laser light source and the white LED.
  • 15A and 15B show graphs in which the horizontal axis represents wavelength (nm) and the vertical axis represents relative irradiance.
  • the RGB laser light source is a light source that emits white laser light by combining red laser light having a peak wavelength of 639 nm, green laser light having a peak wavelength of 532 nm, and blue laser light having a peak wavelength of 465 nm.
  • the white light emitted from the white LED exhibits high irradiance in a wider wavelength range than the RGB laser light source.
  • the white light emitted from the RGB laser light source has a bandwidth (half-value width) in each of the blue light wavelength range, the green light wavelength range, and the red light wavelength range. ) Having a very narrow peak wavelength.
  • the average color rendering index Ra, special color rendering index R9, and theoretical efficiency (lm / W) of the light emitted by the white LED and RGB laser light source having such spectral distribution characteristics are as shown in FIG. .
  • the numerical values shown in FIG. 15C are values when the chromaticity (x, y) and the color temperature (K) of each irradiation light are adjusted to the chromaticity and color temperature generally required for a vehicle lamp. is there.
  • the “theoretical efficiency” means the light emission efficiency when all the energy input to the light source is output as visible light.
  • the RGB laser light source shows lower values for Ra, R9, and theoretical efficiency than the white LED.
  • the vehicular lamp 1 includes a blue first laser beam B2, a green second laser beam G2, a yellow or orange third laser beam O2, and a red fourth laser beam R2.
  • a blue first laser beam B2 a green second laser beam G2, a yellow or orange third laser beam O2
  • a red fourth laser beam R2 are combined to form white laser light W2.
  • the average color rendering index Ra can be increased as compared with the case where white laser light is formed by combining blue laser light, green laser light, and red laser light.
  • the design of a vehicular lamp having an excellent color rendering property with an average color rendering index Ra of 60 or more is achieved. It becomes possible. Therefore, the performance improvement of the vehicle lamp provided with a laser light source can be aimed at.
  • Ra it is possible to impart a high theoretical efficiency to the vehicle lamp as compared with the RGB laser light source. Thereby, the brightness
  • the first laser beam B2 has a peak wavelength in a wavelength range of 450 nm to 470 nm
  • the second laser beam G2 has a peak wavelength in a wavelength range of 510 nm to 550 nm
  • the third laser beam O2 is It is preferable that the peak wavelength is in a wavelength range of 570 nm to 612 nm
  • the fourth laser light R2 has a peak wavelength in a wavelength range of 630 nm to 650 nm.
  • the third laser light O2 has a peak wavelength in a wavelength region of 610 nm or less.
  • the improvement of Ra the improvement of the special color rendering index R9 of irradiation light can be achieved more reliably.
  • the third laser light O2 has a peak wavelength in the wavelength range of 580 nm to 600 nm, more preferably 590 nm to 600 nm.
  • the peak wavelength of the 3rd laser beam O2 was set to 570 nm, 580 nm, 585 nm, 590 nm, 600 nm, and 610 nm, and chromaticity (x, y), Ra, R9 and theoretical efficiency in each peak wavelength were calculated.
  • X, Y, and Z in Formula (1) and Formula (2) are tristimulus values X, Y, and Z in the XYZ color system.
  • the tristimulus values X, Y, and Z can be obtained using, for example, a known spectrophotometer or colorimeter.
  • the evaluation of chromaticity is the European standard ECE No. 98 (region A in FIGS.
  • Ra and R9 can be calculated according to the method defined in Japanese Industrial Standard JIS Z 8726.
  • the theoretical efficiency ⁇ theo (lm / W) can be calculated based on the above formula used in the first embodiment.
  • FIG. 16A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 16B is a diagram illustrating the relationship between the chromaticity calculation result and the white region.
  • the hatched cells are not included in the white area for “chromaticity (x)” and “chromaticity (y)”, and the average color rendering index for “Ra”. It indicates that Ra is less than 60, “R9” indicates that R9 is less than ⁇ 37.4, and “theoretical efficiency” indicates that the theoretical efficiency is less than 295.
  • FIGS. 17 (A) and 17 (B) are a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 17B is a diagram illustrating the relationship between the chromaticity calculation result and the white region. In FIG. 17A, the hatched cell is the same as in the evaluation test I.
  • FIGS. 18 (A) and 18 (B) are tables showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 18B is a diagram showing the relationship between the calculation result of chromaticity and the white area. In FIG. 18A, the hatched cell is the same as in the evaluation test I.
  • FIGS. 19 (A) and 19 (B) are tables showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 19B is a diagram showing the relationship between the chromaticity calculation result and the white region. In FIG. 19A, the hatched cell is the same as in the evaluation test I.
  • FIGS. 20 (A) and 20 (B) Evaluation is performed except that the peak wavelength of the second laser beam G2 is 545 nm, the output intensity ratio of the third laser beam O2 is 0.80, and 612 nm and 613 nm are added to the setting of the peak wavelength of the third laser beam O2.
  • Calculation and evaluation of chromaticity, Ra, R9 and theoretical efficiency were carried out in the same manner as in Test II. The results are shown in FIGS. 20 (A) and 20 (B).
  • FIG. 20A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 20B is a diagram illustrating the relationship between the chromaticity calculation result and the white region. In FIG. 20A, the hatched cell is the same as in the evaluation test I.
  • FIGS. 21 (A) and 21 (B) The chromaticity, Ra, R9 and theoretical efficiency were calculated and evaluated in the same manner as in Test III.
  • the results are shown in FIGS. 21 (A) and 21 (B).
  • FIG. 21A is a table showing calculation results of chromaticity, average color rendering index Ra, special color rendering index R9, and theoretical efficiency.
  • FIG. 21B is a diagram showing the relationship between the chromaticity calculation result and the white region. In FIG. 21A, the hatched cell is the same as in the evaluation test I.
  • the first laser beam B2 to the fourth laser beam R2 are combined, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. It was also confirmed that good chromaticity and Ra can be obtained when the peak wavelength of the third laser light O2 is 585 nm to 600 nm. It was also confirmed that good R9 and theoretical efficiency can be obtained simultaneously. It was also confirmed that higher theoretical efficiency of 300 lm / w or higher can be obtained when the peak wavelength of the third laser light O2 is less than 600 nm.
  • the first laser beam B2 to the fourth laser beam R2 are combined, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. It was also confirmed that when the peak wavelength of the third laser beam O2 is 590 nm to 600 nm, good chromaticity and Ra can be obtained, and at the same time, good R9 and theoretical efficiency can be obtained.
  • the first laser beam B2 to the fourth laser beam R2 are synthesized, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. Further, it was confirmed that when the peak wavelength of the third laser light O2 is 570 nm to 580 nm, good chromaticity and Ra can be obtained, and at the same time, good R9 and theoretical efficiency can be obtained.
  • the first laser beam B2 to the fourth laser beam R2 are synthesized, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. Further, it was confirmed that when the peak wavelength of the third laser light O2 is 580 nm to 600 nm, good chromaticity and Ra can be obtained, and at the same time, good R9 and theoretical efficiency can be obtained.
  • the first laser beam B2 to the fourth laser beam R2 are combined, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. It was also confirmed that good chromaticity and Ra can be obtained when the peak wavelength of the third laser light O2 is 590 nm to 612 nm. At the same time, it was confirmed that good theoretical efficiency was obtained. Further, it was confirmed that when the peak wavelength of the third laser light O2 is 590 nm to 610 nm, good R9 can be obtained with good chromaticity, Ra, and theoretical efficiency.
  • the first laser beam B2 to the fourth laser beam R2 are synthesized, compared with the case where the third laser beam O2 is not included. It was confirmed that Ra can be improved. Further, it was confirmed that when the peak wavelength of the third laser light O2 is 573 nm to 580 nm, good chromaticity and Ra can be obtained, and at the same time, good R9 and theoretical efficiency can be obtained.
  • Ra can be improved by synthesizing four colors of laser light including the third laser light O2 as compared with the case where the third laser light O2 is not included.
  • the peak wavelength of the 3rd laser beam O2 was 570 nm or more and 612 nm or less, while having desired chromaticity, it was confirmed that the white laser beam W2 which has 60 or more Ra can be formed. Therefore, it was confirmed that the chromaticity required for the vehicular lamp and the improvement of the color rendering property of the vehicular lamp can be achieved.
  • the peak wavelength of the third laser beam O2 is 590 nm to 600 nm, good chromaticity and Ra can be obtained under wider conditions. Therefore, it was confirmed that the performance of the vehicular lamp can be easily improved by setting the peak wavelength of the third laser light O2 to 580 nm to 600 nm, further 590 nm to 600 nm.
  • the vehicular lamp 1 includes the first light source 1102 that emits the blue first laser light B2, the second light source 1104 that emits the green second laser light G2, and A third light source 1106 that emits yellow or orange third laser light O2, a fourth light source 1108 that emits red fourth laser light R2, and a condensing light that collects each laser light to generate white laser light W2. Part 1200.
  • the color rendering properties of the vehicular lamp can be improved as compared with the RGB laser light source.
  • the light utilization rate of the vehicular lamp is improved while suppressing a decrease in the visibility of the driver or improving the visibility. Can be made.
  • the present invention is not limited to the above-described embodiment, and the present invention also includes those in which the configurations of the embodiment are appropriately combined or replaced.
  • Various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art, and the embodiments to which such modifications are added can be included in the scope of the present invention. .
  • the scanning unit 300 can be configured by a galvanometer mirror, a MEMS mirror, a polygon mirror, or the like.
  • the vehicular lamp 1 may be a projector-type lamp that includes a projection lens.
  • the present invention can be used for a vehicular lamp.
PCT/JP2014/001640 2013-04-04 2014-03-20 車両用灯具 WO2014162683A1 (ja)

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EP14780115.3A EP2985519B1 (de) 2013-04-04 2014-03-20 Fahrzeuglampenarmatur
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CN201480017475.XA CN105074328B (zh) 2013-04-04 2014-03-20 车辆用灯具
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190056808A (ko) * 2017-11-17 2019-05-27 에스엘 주식회사 차량용 램프

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6654560B2 (ja) * 2014-05-07 2020-02-26 株式会社小糸製作所 光源モジュールおよび車両用灯具
CN105570822A (zh) * 2016-03-02 2016-05-11 成都恒坤光电科技有限公司 一种色温可调的光源及采用该光源的光源组件和前照灯
CN114502879A (zh) * 2019-10-01 2022-05-13 昕诺飞控股有限公司 使用绿色磷光体的高强度彩色可调谐白色激光器光源
WO2021219442A1 (en) * 2020-04-30 2021-11-04 Signify Holding B.V. High intensity light source with high cri for low ctt using green laser pumped phosphor
EP4298374A1 (de) * 2021-02-23 2024-01-03 Signify Holding B.V. Abstimmbares schmalbandlichtsystem mit hohem cri über einen breiten ctt-bereich
CN116917659A (zh) * 2021-02-23 2023-10-20 昕诺飞控股有限公司 在观察者与测试样本之间具有最大颜色一致性的窄带光系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10125106A (ja) * 1996-10-21 1998-05-15 Mitsubishi Heavy Ind Ltd 照明装置
JPH11237631A (ja) * 1998-02-23 1999-08-31 Sanyo Electric Co Ltd カラー表示装置
JP2010036835A (ja) 2008-08-08 2010-02-18 Koito Mfg Co Ltd 車両用灯具
JP2011065979A (ja) * 2009-08-18 2011-03-31 Sharp Corp 光源装置
JP2012169375A (ja) * 2011-02-10 2012-09-06 Sharp Corp 光源装置、照明装置および車両用前照灯
JP2013125693A (ja) * 2011-12-15 2013-06-24 Koito Mfg Co Ltd 車両用灯具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2596709B2 (ja) * 1994-04-06 1997-04-02 都築 省吾 半導体レーザ素子を用いた照明用光源装置
US7530710B2 (en) * 2006-05-24 2009-05-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Color-tunable illumination system for imaging illumination
DE102008022795B4 (de) * 2008-05-08 2020-01-09 Osram Opto Semiconductors Gmbh Kfz-Scheinwerfer
US8564205B2 (en) * 2011-05-23 2013-10-22 General Electric Company Configurable vehicle solid state lighting
KR101322458B1 (ko) * 2012-01-16 2013-10-28 서울반도체 주식회사 다색 발광장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10125106A (ja) * 1996-10-21 1998-05-15 Mitsubishi Heavy Ind Ltd 照明装置
JPH11237631A (ja) * 1998-02-23 1999-08-31 Sanyo Electric Co Ltd カラー表示装置
JP2010036835A (ja) 2008-08-08 2010-02-18 Koito Mfg Co Ltd 車両用灯具
JP2011065979A (ja) * 2009-08-18 2011-03-31 Sharp Corp 光源装置
JP2012169375A (ja) * 2011-02-10 2012-09-06 Sharp Corp 光源装置、照明装置および車両用前照灯
JP2013125693A (ja) * 2011-12-15 2013-06-24 Koito Mfg Co Ltd 車両用灯具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190056808A (ko) * 2017-11-17 2019-05-27 에스엘 주식회사 차량용 램프
KR102421072B1 (ko) 2017-11-17 2022-07-14 에스엘 주식회사 차량용 램프

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EP2985519B1 (de) 2018-06-13
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EP2985519A1 (de) 2016-02-17
EP3279553A1 (de) 2018-02-07

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