WO2019029067A1 - Dispositif d'éclairage, phare d'automobile et système d'éclairage - Google Patents

Dispositif d'éclairage, phare d'automobile et système d'éclairage Download PDF

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Publication number
WO2019029067A1
WO2019029067A1 PCT/CN2017/114730 CN2017114730W WO2019029067A1 WO 2019029067 A1 WO2019029067 A1 WO 2019029067A1 CN 2017114730 W CN2017114730 W CN 2017114730W WO 2019029067 A1 WO2019029067 A1 WO 2019029067A1
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WO
WIPO (PCT)
Prior art keywords
excitation light
light
wavelength conversion
illumination
conversion device
Prior art date
Application number
PCT/CN2017/114730
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English (en)
Chinese (zh)
Inventor
郭祖强
杨炳柯
李屹
Original Assignee
深圳市绎立锐光科技开发有限公司
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
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Application filed by 深圳市绎立锐光科技开发有限公司 filed Critical 深圳市绎立锐光科技开发有限公司
Publication of WO2019029067A1 publication Critical patent/WO2019029067A1/fr

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Classifications

    • 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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • 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
    • 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

Definitions

  • Lighting car headlights and lighting systems
  • the present invention relates to the field of optical technologies, and in particular, to a lighting device, a headlight and a lighting system using the lighting device.
  • lighting lamps usually have LED headlights, xenon headlights and halogen headlights.
  • laser headlights are also applied. Laser lighting is an important development direction of future lighting technology. . technical problem
  • the direction of the beam, the divergence angle, and the color (color coordinates) are usually not changeable.
  • a blue laser is used as an excitation light source, and the light emitted by the blue laser is focused on the fluorescent substrate through a lens, and the excited fluorescence is mixed with blue light to form white light, and is collimated and output through the reflector.
  • This structure is relatively simple, but the direction of the emitted light, the divergence angle, and the color cannot be adjusted.
  • the present invention provides a lighting device and a lighting system, which can simplify the design of the lamp, reduce the cost of the lamp, and can effectively expand the visual range, reduce the probability of accidents, and is suitable for the steam illumination device of different scenes.
  • an illumination device comprising: an excitation light source, a first concentrating element, a beam deflecting device, and a wavelength conversion device;
  • the excitation light source is configured to transmit excitation light to the first concentrating element, the first concentrating element converges the received excitation light, and transmits the concentrated excitation light to the light beam a deflection device, the beam deflecting device deflects the excitation light by a certain angle and transmits to the beam splitter, the beam splitter is configured to transmit the deflected excitation light to the wavelength conversion device, the wavelength conversion
  • the apparatus is configured to absorb a portion of the excitation light to form a laser beam, and the laser light and the excitation light that is not absorbed by the wavelength conversion device form illumination light to be emitted.
  • another technical solution adopted by the present invention is: providing a large automobile A lamp, the car headlight comprising the illumination device of any of the above.
  • another technical solution adopted by the present invention is to provide an illumination system, which includes the illumination device according to any one of the above.
  • the utility model has the beneficial effects of providing a lighting device, a car headlight and an illumination system, and the brightness of the output beam can be increased by adding a beam deflecting device, a beam splitter and a movable wavelength converting device in the lighting system.
  • the direction, energy distribution, divergence angle and color coordinates are adjusted, and the lamp design can be simplified, the cost of the lamp can be reduced, the visual range can be effectively expanded, the probability of accidents can be reduced, and the illumination source of the vehicle can be applied to different scenes.
  • FIG. 1 is a schematic structural view of a first embodiment of a lighting device of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of the lighting device of the present invention.
  • FIG. 3 is a schematic view showing a comparison of deflection and non-deflection ⁇ excitation light spots of the beam conversion device of the present invention
  • FIG. 4 is a schematic view showing the energy comparison of the output beam of the illumination device of the present invention.
  • FIG. 5 is a schematic structural view of a third embodiment of the lighting device of the present invention.
  • FIG. 6 is a schematic diagram of an embodiment of the astigmatism device adjusting the divergence angle of the output light according to the present invention
  • FIG. 7 is a schematic structural view of a fourth embodiment of a lighting device of the present invention.
  • FIG. 8 is a schematic diagram of an embodiment of a translational wavelength conversion device of a driving device of the present invention.
  • FIG. 9 is a schematic structural view of an embodiment of an illumination system of the present invention.
  • FIG. 10 is a schematic structural view of an embodiment of a laser projector according to the present invention.
  • the illumination device 10 includes an excitation light source 11, a first concentrating element 12, a beam deflecting device 13, a beam splitter 14, and a wavelength converting device 15 and a second concentrating element 16.
  • the excitation light source 11 is used to transmit the excitation light beam to the first concentrating element 12.
  • the excitation light source 11 may be a blue laser or an ultraviolet laser.
  • the laser is used as the illumination method, which has high brightness and long service life, and the beam emitted by the collimating angle of the laser beam can be compared. Concentrated emission in one direction can greatly increase the distance of illumination. At the same time, if the direction of the laser beam is properly adjusted, the rut beam can be avoided to hit the opposite car, which improves the safety of driving.
  • a blue laser is used as the excitation light source.
  • the first concentrating element 12 is configured to converge the received excitation light, and transmit the concentrated excitation light to the beam deflecting device 13.
  • the first concentrating element 12 used in this embodiment is a positive lens.
  • a wedge-shaped microlens, a spherical microlens or a conical microlens may be used, and all of the excitation light source 11 is emitted.
  • the excitation beam is concentrated.
  • the illumination device 10 may further include a first collimating device A disposed between the excitation light source 11 and the first concentrating element 12 for performing the excitation light emitted by the excitation light source 11 first. The collimation process is performed to obtain parallel light, and the parallel light is further transmitted to the first concentrating element 12.
  • the beam deflecting device 13 used in the present embodiment is used for deflecting the focused excitation beam by a certain angle and transmitting it to the beam splitter 14. Further, the beam deflecting means 13 adjusts the direction in which the concentrated light is deflected. In the present embodiment, the beam deflecting device 13 can be driven to rotate by a certain angle by electro-optical, acousto-optic, magneto-optical, etc., so that the excitation light is deflected by the beam deflecting device 13 and then deflected by a certain angle.
  • the beam splitter 14 is configured to reflect the deflected blue excitation beam to the wavelength conversion device 15.
  • the beam splitter used in the present application has a very small area and is capable of reflecting the excitation beam emitted by the excitation source and transmitting the light of other wavelength bands.
  • the deflection angle of the beam splitter 14 is adjustable to be compatible with the angle of the excitation light passing through the beam deflecting device 13.
  • the beam splitter 14 is capable of adjusting excitation light incidence to wavelength conversion
  • the angle of the device 15 facilitates the incidence of excitation light to a particular location of the wavelength conversion device 15.
  • the deflection angle adjustment of the beam splitter 14 used in this embodiment can also be realized by electro-optical, acousto-optic or magneto-optical.
  • the illumination device 10 further includes a second concentrating element 16 disposed between the beam splitter 14 and the wavelength conversion device 15 for transmitting the deflected excitation light to the wavelength conversion
  • the device 15 and the illumination light output by the wavelength conversion device 15 are concentrated.
  • the wavelength conversion device 15 is for absorbing a part of the excitation light to form a laser light, and the laser light and the excitation light not absorbed by the wavelength conversion device 15 form an illumination light to be emitted.
  • the side of the wavelength conversion device 15 facing away from the second concentrating element 16 is plated with a reflective film B, and the reflectance distribution of the reflective film B is not uniform, and the reflective film B is used for receiving the laser light and not being wavelength.
  • the excitation light absorbed by the conversion device 15 is reflected to the second concentrating element 16, and the second condensing element 16 collects and collects the laser light and the excitation light to be emitted.
  • the reflective film B coated by one side of the wavelength conversion device 15 facing away from the second concentrating element 16 may be a material having a non-uniform reflectance.
  • a plurality of reflective films having different reflectances may be formed. Specifically, a plurality of regions may be disposed on a surface of the wavelength conversion device 15 facing away from the second light collecting member 16, and different regions are reflected. The reflectivity of the film is different, that is, the material of the reflective film in different regions can be set to be different, so that the reflectances of different regions are different.
  • a partial region of the reflective film B is a material having a high reflectance
  • a partial region is a material having a low reflectance.
  • the excitation light illuminates the phosphor segment corresponding to the portion with the higher reflectance, so that the laser light and the unabsorbed excitation light are incident on the region of the high reflectance material, so that the reflected film B reflects the laser light and
  • the absorbed excitation light forms an illumination light to exit; when the nighttime car or rainy weather needs to adjust the illumination light color temperature, the deflection angle of the excitation light can be adjusted, so that the excitation light is irradiated to the phosphor corresponding to the portion with a lower reflectance.
  • the reflective film B may also be formed by splicing and combining reflective films of different reflectivity.
  • the low reflection area of the reflective film B may also be disposed on a side of the wavelength conversion device 15 facing the second light collecting element 16, thereby weakening the excitation light to be irradiated on the wavelength conversion material.
  • the intensity of light is used to achieve the purpose of adjusting the intensity of the emitted light and the color temperature.
  • the phosphor on the wavelength conversion device 15 may specifically be a yellow phosphor, and the yellow light is excited by the excitation light source to emit blue light, and the blue excitation light beam is mixed with the unexcited phosphor to obtain white illumination light.
  • the phosphor on the wavelength conversion device is at least two colors, specifically, a red, green, and blue primary color phosphor, which is in the excitation light source.
  • the phosphor is excited by the ultraviolet light, and is mixed with the ultraviolet excitation beam of the unexcited phosphor to obtain white illumination.
  • it can also be two complementary color phosphors, such as yellow + blue phosphor, magenta + green phosphor, red + cyan phosphor, excited by ultraviolet light, and ultraviolet excitation with unexcited phosphor.
  • the beam is mixed to obtain white light illumination.
  • the beam deflecting device does not change the direction of its transmitted beam
  • the excitation light source 11 used in the present application is a blue laser. Of course, in other embodiments, an ultraviolet laser may also be used.
  • the blue excitation beam emitted by it is concentrated by the first concentrating element 12 and transmitted to the beam deflecting device 13, and the first concentrating element 12 can be a positive lens. Thereafter, the beam deflecting device 13 does not deflect, and the excitation beam condensed by the beam deflecting device 13 is irradiated onto the beam splitter 14.
  • the area of the beam splitter 14 is very small, and the blue light can be reflected and transmitted through other wavelength bands.
  • the blue excitation light After the blue excitation light is reflected, it is concentrated on the wavelength conversion device 15 through the second concentrating element 16 to excite the yellow fluorescence, and the side of the wavelength conversion device 15 facing away from the second concentrating element 16 is plated with uneven reflectivity.
  • the distributed film is such that both the stimulated fluorescence and the unabsorbed blue excitation light are reflected toward the second concentrating element 16, collected by the second concentrating element 16 and directed toward the beam splitter 14, and transmitted to form illumination light.
  • FIG. 2 is a schematic structural view of a second embodiment of the illumination device of the present invention
  • FIG. 3 is a schematic view showing a comparison of the deflected and undeflected excitation light spots of the beam conversion device of the present invention.
  • the beam deflecting device changes the direction of its transmitted beam
  • the beam deflecting device 13 changes the direction of its transmitted beam to be adjustable, and can deflect a plurality of angles as needed. Further, the blue excitation beam emitted from the excitation source 11 is concentrated by the first concentrating element 12 and transmitted to the beam deflecting device 13, and the beam deflecting device 13 deflects the transmitted blue excitation beam by a small angle as shown in FIG. The deflected blue excitation beam is reflected by the beam splitter 14 and is incident on the other position of the wavelength conversion device 15 after passing through the second concentrating element 16 due to the deflection angle. The position-excited fluorescence is also deflected by the second concentrating element 16 and is deflected by a certain angle.
  • the outgoing beam After being transmitted by the beam splitter 14, the outgoing beam is angled with respect to the output beam of the beam deflecting device 15 without changing the direction of the transmitted beam.
  • the deflection therefore, by controlling the angle at which the beam splitter 14 is deflected, the direction of the output beam can be adjusted.
  • the spot position of the blue light on the wavelength converting device 15 also changes. If the wavelength conversion device 15 is designed to control the energy distribution and color coordinates of the final output light.
  • FIG. 4 is a schematic diagram of energy comparison of the output beam of the illumination device of the present invention.
  • the reflective film on the lower surface of the wavelength conversion device 15 is a low reflectivity film layer and its reflectance is distributed on the side of the wavelength conversion device 15 facing away from the second light collecting element 16. Not uniform.
  • a blue spot is irradiated on the reflective film, a part of the blue light is transmitted, a part of the light is reflected and the white light is synthesized with the excited fluorescence, so the energy of the output beam is also unevenly distributed, the energy in a certain direction is low, and the energy in a certain direction Relatively high.
  • the brightness of the output light can be further adjusted by adjusting the output power of the excitation light source.
  • the brightness of the high beam and the low beam is adjusted as needed, and the illumination of the high beam is generally higher than that of the low beam. Therefore, the power of the excitation source is adjusted so that the output power is greater than the use of low beam.
  • the output power of the lamp can be further adjusted by adjusting the output power of the excitation light source.
  • FIG. 5 is a schematic structural view of a third embodiment of the lighting device of the present invention.
  • the third embodiment of the illuminating device of the present invention is based on the first embodiment, and is a further extension of the first embodiment of the present invention, and is the same as the first embodiment of the present invention, and details are not described herein again.
  • the illumination device 20 includes: an excitation light source 21, a first concentrating element 22, a beam deflecting device 23, and a beam splitter 24. Wavelength conversion device 25, second concentrating element 26, and astigmatism device 27.
  • the astigmatism device 27 is disposed between the beam deflecting device 23 and the beam splitter 24 for adjusting the divergence angle of the output illumination light.
  • the astigmatism device 27 may be a fly-eye lens, and the beam splitting device 23 can adjust the divergence angle of the excitation light to switch between the near and far light.
  • the size of the spot irradiated on the wavelength converting means 25 can be changed, and the direction of the output beam can be changed by the beam deflecting means 23, whereby different divergence angles can be obtained (i.e., the output beam angle can be made as poor as possible).
  • Another IJ outgoing illumination in different directions of transmission.
  • FIG. 6 is a schematic diagram of an embodiment of the astigmatism device adjusting the divergence angle of the output light.
  • the astigmatism device 27 when the astigmatism device 27 is adjusted to increase the spot on the wavelength conversion device 25, the fluorescence divergence angle generated by the excitation is also increased, and the beam deflecting device 23 is used to illuminate the light beam toward the automobile. The ground in front forms a low beam.
  • the astigmatism device 27 is adjusted to make the spot on the wavelength conversion device 25 smaller, and the control beam is illuminated in parallel to the front to form a high beam.
  • the brightness of the output light can be further adjusted by adjusting the output power of the excitation light source.
  • the brightness of the far-off light and the low beam light is adjusted as needed, and the illumination brightness of the high beam light is generally higher than that of the low beam light. Therefore, the power of the excitation light source is adjusted so that the output power is greater than the use of the low beam.
  • the output power of the lamp can be further adjusted by adjusting the output power of the excitation light source.
  • the brightness, direction, energy distribution, divergence angle, color coordinate, and the like of the output beam can be adjusted, and the like can be obtained. Suitable for automotive lighting sources in different scenarios.
  • FIG. 7 is a schematic structural view of a fourth embodiment of the lighting device of the present invention.
  • the fourth embodiment of the illuminating device of the present invention is based on the first embodiment, and is a further extension of the first embodiment of the present invention, and is the same as the first embodiment of the present invention, No longer.
  • the illumination device 30 includes: an excitation light source 31, a first concentrating element 32, a beam deflecting device 33, a beam splitter 34, a wavelength conversion device 35, a second concentrating element 36, an astigmatism device 37, and a driving device (not shown) Show)
  • FIG. 8 is a schematic diagram of an embodiment of a translational wavelength conversion device of a driving device of the present invention.
  • the phosphors of different wavelengths of the substrate of the wavelength conversion device 35 are coated with phosphors of different colors, specifically yellow phosphors or phosphors of at least two colors, which may be yellow + blue phosphors, magenta + green fluorescent Powder, red + cyan phosphor, etc., and the color of the phosphor is further determined according to the characteristics of the excitation source.
  • the driving device is disposed on the wavelength conversion device 35 for driving the wavelength conversion device 35 to translate or rotate, so that different regions of the wavelength conversion device 35 are exposed on the optical path of the excitation light, thereby obtaining different colors.
  • the coordinates of the laser is in other embodiments, the wavelength conversion device is in the form of a color wheel or a color wheel cylinder, and the color wheel or the color wheel barrel is provided with a driving motor to drive the color wheel or the color wheel to rotate Areas having different wavelength converting materials are exposed on the optical path of the excitation light, thereby obtaining laser light of different color coordinates.
  • the present invention is not further limited herein.
  • the excitation light source used in this embodiment is a blue laser. Further, the substrate of the wavelength conversion device 35 is accurately shifted by the driving device, and the color of the output light can be changed to obtain the output light of different color coordinates in the case where the position, size, and the like of the blue light spot are unchanged. In the weather such as fog, in this way, the component of the yellow light excitation light in the output light can be increased, the illumination distance can be increased, and the driving safety can be further improved.
  • the brightness of the output light can be further adjusted by adjusting the output power of the excitation light source.
  • the brightness of the high beam and the low beam is adjusted as needed, and the illumination of the high beam is generally higher than that of the low beam. Therefore, the power of the excitation source is adjusted so that the output power is greater than the use of low beam.
  • the output power of the lamp can be further adjusted by adjusting the output power of the excitation light source.
  • the astigmatism device and the driving device can adjust the brightness, direction, energy distribution, divergence angle and color coordinates of the output beam, and can obtain an automotive illumination source that can be applied to different scenes.
  • FIG. 9 is a schematic structural view of an embodiment of the illumination system of the present invention.
  • the illumination system 40 includes the illumination device D according to any of the above embodiments, and the principle and specific implementation manner of the illumination device D are described in detail in the foregoing embodiments, and details are not described herein again.
  • the lighting system referred to in the present application may include, but is not limited to, indoor lighting systems (indoor ambience lights, spotlights, etc.), outdoor lighting systems (street lights), and lighting systems used in various types of vehicles (automobiles, motorcycles, Aircraft and ships, etc.).
  • the laser projector includes: a optomechanical module 51, a control module 52, a power source driving module 53, and the illuminating device E mentioned in any of the above embodiments.
  • the optomechanical module 51 is composed of a uniform light illumination component 511, a display chip 512, and a projection lens 513.
  • the illuminating device E provides a usable light source for the illuminating system, and the specific embodiment of the illuminating device E is described in detail above, and details are not described herein again.
  • the optomechanical module 51 receives the light source provided by the illumination system, wherein the uniform light illumination component 511 further multiplexes the light source, and the display chip 512 generates a picture under the actual control of the control module 52, and the generated image is projected through the projection lens 513. The screen to be displayed.
  • the present invention provides a lighting device, a car headlight, and an illumination system by incorporating a beam deflecting device, a beam splitter, a wavelength conversion device, and an astigmatism device in the illumination system.
  • the driving device can adjust the brightness, direction, energy distribution, divergence angle and color coordinate of the output beam, and can obtain an illumination source suitable for different scenes.

Abstract

L'invention concerne un dispositif d'éclairage (10), un phare d'automobile et un système d'éclairage. Le dispositif d'éclairage (10) comprend une source de lumière d'excitation (11), un premier élément de concentration de lumière (12), un dispositif de déviation de faisceau (13), et un dispositif de conversion de longueur d'onde (15). La source de lumière d'excitation (11) sert à émettre une lumière d'excitation sur le premier élément de concentration de lumière (12). Le premier élément de concentration de lumière (12) concentre la lumière d'excitation reçue, et émet la lumière d'excitation concentrée sur le dispositif de déviation de faisceau (13). Le dispositif de déviation de faisceau (13) dévie la lumière d'excitation d'un certain angle et émet cette dernière sur le dispositif de conversion de longueur d'onde (15). Le dispositif de conversion de longueur d'onde (15) sert à absorber une partie de la lumière d'excitation afin de former une lumière excitée, et la lumière excitée et la lumière d'excitation qui n'est pas absorbée par le dispositif de conversion de longueur d'onde (15) forment une lumière d'éclairage à émettre. De cette manière, la conception du phare peut être simplifiée, le coût du phare peut être réduit, et la plage visible peut être efficacement étendue afin de réduire la probabilité d'accidents.
PCT/CN2017/114730 2017-08-11 2017-12-06 Dispositif d'éclairage, phare d'automobile et système d'éclairage WO2019029067A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710691021.6A CN109539170A (zh) 2017-08-11 2017-08-11 照明装置、汽车大灯及照明系统
CN201710691021.6 2017-08-11

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US20150252974A1 (en) * 2014-03-06 2015-09-10 Darwin Hu Enhanced Illumination Efficacy of White Color from Green Laser and Magenta Phosphor
CN204201727U (zh) * 2014-09-26 2015-03-11 深圳大学 一种照明装置、汽车激光大灯及汽车
CN204740418U (zh) * 2015-07-14 2015-11-04 中国科学院重庆绿色智能技术研究院 一种基于dmd的蓝光激发荧光粉式激光车灯
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