WO2021135865A1 - 一种灯具 - Google Patents

一种灯具 Download PDF

Info

Publication number
WO2021135865A1
WO2021135865A1 PCT/CN2020/134704 CN2020134704W WO2021135865A1 WO 2021135865 A1 WO2021135865 A1 WO 2021135865A1 CN 2020134704 W CN2020134704 W CN 2020134704W WO 2021135865 A1 WO2021135865 A1 WO 2021135865A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
laser source
excitation
sheet
reflector
Prior art date
Application number
PCT/CN2020/134704
Other languages
English (en)
French (fr)
Inventor
何刚
张志超
邢美正
Original Assignee
深圳市聚飞光电股份有限公司
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
Publication date
Application filed by 深圳市聚飞光电股份有限公司 filed Critical 深圳市聚飞光电股份有限公司
Publication of WO2021135865A1 publication Critical patent/WO2021135865A1/zh

Links

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
    • F21S41/10—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
    • 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 - F21S41/2805
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the embodiment of the present invention relates to the field of lighting technology, and more specifically, to the field of LED technology.
  • the headlights of motor vehicles can increase the field of vision, which is a necessary facility at night and foggy weather.
  • the lighting effect of the car headlamp is not ideal, which is mainly reflected in the problems of uneven light spots and different light colors of the light, so the actual lighting effect is not ideal.
  • the technical problem to be solved by the embodiment of the present invention is that the light spot of the lighting lamp is uneven and the light color is different.
  • a lamp which includes a laser source, an excitation member, and a reflector, the reflector covers the excitation member;
  • the excitation member includes a fluorescent sheet, and surrounds the fluorescent sheet and is arranged at The light-shielding sheet around the fluorescent sheet; in the working state, the light emitted by the laser source enters the excitation member, and after being excited by the fluorescent sheet, a uniform tone of scattered light is formed, and the light at the edge is covered by the light-shielding sheet Absorb; The scattered light is then reflected by the reflector and then exits in a designated direction.
  • the laser source is arranged above the excitation member, and the excitation member excites the light emitted by the laser source by reflection.
  • the reflector cup is shrouded above the excitation member, and the light exit angle of the reflector cup is lateral light exit.
  • the laser source is arranged on the reflector cup, and the included angle between the laser beam emitted by the laser source and the final light beam after reflection by the reflector cup is fixed.
  • the laser source is arranged below the excitation member, and the excitation member excites the light emitted by the laser source by means of refraction.
  • At least one condenser lens is further provided between the laser source and the excitation member.
  • the reflector cup is enveloped around the excitation member, the excitation member is located at the bottom of the reflector cup, and the light exit angle of the reflector cup is the light from the mouth of the cup.
  • the laser source is a blue laser diode.
  • the light-shielding sheet is made of dark-colored material.
  • the thermal conductivity of the shading sheet is greater than or equal to a preset thermal conductivity threshold.
  • the embodiment of the present invention provides a lamp, which includes a laser source, an excitation part, and a reflector.
  • the reflector covers the excitation part;
  • the excitation part includes a fluorescent sheet, and a light-shielding sheet surrounding the fluorescent sheet and arranged around the fluorescent sheet;
  • the light emitted by the laser source is directed toward the excitation member, and after being excited by the fluorescent sheet, scattered light of uniform color is formed.
  • the light at the edge is absorbed by the shading sheet; the scattered light is reflected by the reflector and then exits in a designated direction. Therefore, by arranging a light-shielding sheet around the fluorescent sheet, the absorption of the excess light emitted by the laser source is realized, the problems of uneven light spot and light color in the excitation of the fluorescent sheet are avoided, and the lighting effect is improved.
  • Figure 1 is a structural diagram of the lamp in the first embodiment
  • FIG. 2 is a schematic diagram of the structure of the vehicle-mounted laser light circuit in the first embodiment
  • Fig. 3 is a structural diagram of the lamp in the second embodiment.
  • this embodiment provides a lamp, including a laser source 1, an excitation element 2 and a reflector 3, the reflector 3 envelops the excitation element 2;
  • the excitation element 2 includes a fluorescent sheet 21 and a surrounding fluorescent sheet 21 and a light-shielding sheet 22 arranged around the fluorescent sheet 21; in the working state, the light emitted by the laser source 1 is directed toward the excitation member 2, and after being excited by the fluorescent sheet 21, a uniform tone of scattered light is formed, and the light at the edge is shielded by the light-shielding sheet 22 Absorption; The scattered light is reflected by the reflector 3 and then exits in a designated direction.
  • the lamp in this embodiment adopts the laser source 1 as the light source, and is excited by the excitation member 2 to obtain the corresponding colored light emission.
  • the lamp has at least a light source and light path processing components, among which the light path processing components are the excitation element 2 and the reflector 3 in this embodiment.
  • the excitation member 2 is used to excite the laser light emitted by the laser source 1.
  • the light color can be changed by excitation to obtain the desired colored light, and on the other hand, the light path can be changed, thereby making the setting of the laser source 1 more flexible.
  • the laser has the characteristics of high concentration and high intensity, the illumination range of the laser source 1 itself is very small, and the optical path of the laser source 1 is adjusted through the excitation member 2 and the reflector 3 to obtain the desired optical path.
  • the laser source 1 may be a blue laser diode.
  • the excitation member 2 includes a fluorescent sheet 21 and a light-shielding sheet 22, wherein the fluorescent sheet 21 is used for laser excitation, and the light-shielding sheet 22 is used for absorbing excess light.
  • the light-shielding sheet 22 is disposed around the fluorescent sheet 21, and may be integrally molded with the fluorescent sheet 21, or may be provided separately, and then the light-shielding sheet 22 is wrapped around the fluorescent sheet 21.
  • the light-shielding sheet 22 is made of a dark-colored material.
  • the light-shielding sheet 22 may be black or dark brown, so that the light absorption effect is better.
  • the light-shielding sheet 22 only absorbs the light at the edge, and the central part of the laser light emitted by the laser source 1 is received by the fluorescent sheet 21, and is excited and scattered to form scattered light.
  • the size of the fluorescent sheet 21 is less than or equal to the beam size of the light emitted by the laser source 1, so as to ensure that the light irradiated by the laser source 1 on the fluorescent sheet 21 is uniform, and the light excited by the fluorescent sheet 21 is also uniform;
  • the part of the light beam emitted by the laser source 1 that is larger than the fluorescent sheet 21 is absorbed by the light shielding sheet 22.
  • the laser source 1 is characterized by high energy, and a high-energy light source will cause a significant heating effect on the target it irradiates, that is, the excitation element 2 will increase significantly. If the temperature is too high, it may affect the effect of the excitation element 2. .
  • the thermal conductivity of the light-shielding sheet 22 can be set to be greater than or equal to the preset thermal conductivity threshold, that is, the light-shielding sheet 22 is set to a material with high thermal conductivity, so that the light-shielding sheet 22 can conduct heat, so that the fluorescent sheet
  • the heat of 21 can be quickly dissipated through the light-shielding sheet 22; optionally, the light-shielding sheet 22 may be a material with high thermal conductivity such as metal.
  • the excitation element 2 in this embodiment can be divided into reflective excitation and refraction excitation according to the principle of the excitation light path, that is, the laser light emitted by the laser source 1 is scattered on the fluorescent sheet 21 on the excitation element 2. If the light is scattered in the form of reflected light, it is a reflective excitation; if the scattered light after being emitted to the fluorescent sheet 21 on the laser device is scattered in the form of refracted light, it is a refraction excitation.
  • the reflective excitation is as follows:
  • the laser source 1 is arranged above the excitation member 2, and the excitation member 2 excites the light emitted by the laser source 1 in a reflective manner.
  • Reflective excitation in which the laser source 1 should be located on the same side of the excitation element 2 as the final emitted light; please refer to Figure 1, which is a schematic diagram of the reflective excitation structure, in which the light emitted by the laser source 1 is emitted from above The fluorescent sheet 21 on the excitation member 2, and then the fluorescent sheet 21 reflects the scattered light, and the scattered light passes through the reflector 3 to emit the light through a prescribed direction.
  • the reflector cup 3 is shrouded above the excitation element 2, and the light exit angle of the reflector cup 3 is lateral light exit.
  • the reflector cup 3 in FIG. 1 is shrouded above to reflect the scattered light reflected by the excitation member 2.
  • the laser source 1 is arranged on the reflector 3, and the included angle between the laser beam emitted by the laser source 1 and the final light beam reflected by the reflector 3 is fixed.
  • the light emitted by the laser source 1 can be approximately regarded as parallel light.
  • the light finally emitted through the reflector 3 is also parallel light. Therefore, the laser beam emitted by the laser source 1 is reflected by the reflector 3
  • the angle between the final light beams is fixed, and please refer to Figure 2.
  • the angle of the light beam finally emitted by the reflector 3 is preferably light parallel to the ground.
  • the laser source 1 is disposed on the reflector cup 3, and the exit angle of the laser source 1 and the exit angle of the reflector cup 3 have angular components in the same direction.
  • the laser source 1 and the initial emitted light are located on the same side of the excitation element 2, and the output angle of the laser source 1 has the same direction as the angle of the reflector 3, which represents the output of the laser source 1.
  • the emitted light is biased towards the direction of the final emitted light.
  • the emitted light of the laser source 1 is A
  • the emitted light of the reflector is given to B, where A and B both have a horizontal rightward angle component in the figure.
  • the angle component can be divided from the horizontal and vertical directions.
  • the angle between the exit angle of the laser light source 1 and the normal direction can be 45°.
  • This embodiment provides a lamp, which includes a laser source 1, an excitation element 2, and a reflector 3, the reflector 3 envelops the excitation element 2;
  • the excitation element 2 includes a fluorescent sheet 21, and surrounds the fluorescent sheet 21 and is arranged on the fluorescent sheet 21 around the shading sheet 22; in the working state, the light emitted by the laser source 1 is directed toward the excitation member 2, and after being excited by the fluorescent sheet 21, a uniform color of scattered light is formed, and the light at the edge is absorbed by the shading sheet 22; the scattered light is then After being reflected by the reflector 3, it exits in a designated direction. Therefore, the light-shielding sheet 22 is arranged around the fluorescent sheet 21 to realize the absorption of the excess light emitted by the laser source 1, avoiding the problems of uneven light spot and light color when the fluorescent sheet 21 is excited, and improving the lighting effect.
  • this embodiment provides a lamp, including a laser source 1, an excitation element 2 and a reflector 3, the reflector 3 envelops the excitation element 2;
  • the excitation element 2 includes a fluorescent sheet 21 and a surrounding fluorescent sheet 21 and a light-shielding sheet 22 arranged around the fluorescent sheet 21; in the working state, the light emitted by the laser source 1 is directed toward the excitation member 2, and after being excited by the fluorescent sheet 21, a uniform tone of scattered light is formed, and the light at the edge is shielded by the light-shielding sheet 22 Absorption; The scattered light is reflected by the reflector 3 and then exits in a designated direction.
  • the lamp in this embodiment adopts the laser source 1 as the light source, and is excited by the excitation member 2 to obtain the corresponding colored light emission.
  • the lamp has at least a light source and light path processing components, among which the light path processing components are the excitation element 2 and the reflector 3 in this embodiment.
  • the excitation member 2 is used to excite the laser light emitted by the laser source 1.
  • the light color can be changed by excitation to obtain the desired colored light, and on the other hand, the light path can be changed, thereby making the setting of the laser source 1 more flexible.
  • the laser has the characteristics of high concentration and high intensity, the illumination range of the laser source 1 itself is very small, and the optical path of the laser source 1 is adjusted through the excitation member 2 and the reflector 3 to obtain the desired optical path.
  • the laser source 1 may be a blue laser diode.
  • the excitation member 2 includes a fluorescent sheet 21 and a light-shielding sheet 22, wherein the fluorescent sheet 21 is used for laser excitation, and the light-shielding sheet 22 is used for absorbing excess light.
  • the light-shielding sheet 22 is disposed around the fluorescent sheet 21, and may be integrally molded with the fluorescent sheet 21, or may be provided separately, and then the light-shielding sheet 22 is wrapped around the fluorescent sheet 21.
  • the light-shielding sheet 22 is made of a dark-colored material.
  • the light-shielding sheet 22 may be black or dark brown, so that the light absorption effect is better.
  • the light-shielding sheet 22 only absorbs the light at the edge, and the central part of the laser light emitted by the laser source 1 is received by the fluorescent sheet 21, and is excited and scattered to form scattered light.
  • the size of the fluorescent sheet 21 is less than or equal to the beam size of the light emitted by the laser source 1, so as to ensure that the light irradiated by the laser source 1 on the fluorescent sheet 21 is uniform, and the light excited by the fluorescent sheet 21 is also uniform;
  • the part of the light beam emitted by the laser source 1 that is larger than the fluorescent sheet 21 is absorbed by the light shielding sheet 22.
  • the laser source 1 is characterized by high energy, and a high-energy light source will cause a significant heating effect on the target it irradiates, that is, the excitation element 2 will increase significantly. If the temperature is too high, it may affect the effect of the excitation element 2. .
  • the thermal conductivity of the light-shielding sheet 22 can be set to be greater than or equal to the preset thermal conductivity threshold, that is, the light-shielding sheet 22 is set to a material with high thermal conductivity, so that the light-shielding sheet 22 can conduct heat, so that the fluorescent sheet
  • the heat of 21 can be quickly dissipated through the light-shielding sheet 22; optionally, the light-shielding sheet 22 may be a material with high thermal conductivity such as metal.
  • the excitation member 2 in this embodiment can be divided into reflective excitation and refraction excitation.
  • the refraction excitation is as follows:
  • the laser source 1 is arranged under the excitation member 2, and the excitation member 2 excites the laser source 1 through refraction.
  • Figure 3 shows a structure diagram of a refraction excitation.
  • the principle of refraction excitation results in that the laser source 1 and the final emitted light should be located on the opposite side of the excitation element 2, that is, separate on both sides of the excitation element 2. .
  • the fluorescent sheet 21 in the excitation member 2 is light-transmissive.
  • At least one condenser lens may be provided between the laser source 1 and the excitation member 2.
  • the arrangement of the condensing lens can further improve the condensing effect of the laser source 1 and increase the directivity and intensity of the light emitted from the laser source 1 to the excitation member 2.
  • the condenser lens is a convex lens.
  • the reflector cup 3 is shrouded around the excitation member 2, the excitation member is located at the bottom of the reflector cup, and the light exit angle of the reflector cup is the light from the cup mouth, that is, the direction of the final light exit is Directly outward along the direction of the excitation member 2.
  • This embodiment provides a lamp, which includes a laser source 1, an excitation element 2, and a reflector 3, the reflector 3 envelops the excitation element 2;
  • the excitation element 2 includes a fluorescent sheet 21, and surrounds the fluorescent sheet 21 and is arranged on the fluorescent sheet 21 around the shading sheet 22; in the working state, the light emitted by the laser source 1 is directed toward the excitation member 2, and after being excited by the fluorescent sheet 21, a uniform color of scattered light is formed, and the light at the edge is absorbed by the shading sheet 22; the scattered light is then After being reflected by the reflector 3, it exits in a designated direction. Therefore, the light-shielding sheet 22 is arranged around the fluorescent sheet 21 to realize the absorption of the excess light emitted by the laser source 1, avoiding the problems of uneven light spot and light color when the fluorescent sheet 21 is excited, and improving the lighting effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Semiconductor Lasers (AREA)

Abstract

一种灯具，包括激光源（1）、激发件（2）和反光杯（3），反光杯（3）将激发件（2）笼罩于其中；激发件（2）包括荧光片（21），和环绕荧光片（21）且设置于荧光片（21）周围的遮光片（22）；在工作状态下，激光源（1）出射的光射入激发件（2），且在经过荧光片（21）激发后形成均匀色调的散射光线，边缘的光被遮光片（22）吸收；散射光线再经由反光杯（3）反射后向指定方向出射。从而通过在荧光片（21）周围设置遮光片（22），来实现对激光源（1）发出的多余的光的吸收，避免了荧光片（21）激发时光斑不均，光色不一的问题，提升了照明效果。

Description

一种灯具 技术领域
本发明实施例涉及照明技术领域，更具体地说，涉及一种LED技术领域。
 背景技术
对于照明技术而言，大多追求一种高亮度均匀的照明环境，比如说机动车的车灯，其前照灯可以提高视野范围，在夜晚和大雾天气是必要的设施。但是相关技术中，汽车前照灯的照明效果并不理想，主要体现在光斑不均，出光的光色不一的问题，所以实际的照明效果并不理想。
 技术问题
本发明实施例要解决的技术问题在于照明用灯具光斑不均，光色不一。
 技术解决方案
针对该技术问题，提供一种灯具，包括激光源、激发件和反光杯，所述反光杯将所述激发件笼罩于其中；所述激发件包括荧光片，和环绕所述荧光片且设置于荧光片周围的遮光片；在工作状态下，所述激光源出射的光射入所述激发件，且在经过所述荧光片激发后形成均匀色调的散射光线，边缘的光被所述遮光片吸收；所述散射光线再经由所述反光杯反射后向指定方向出射。
可选的，所述激光源设置于所述激发件的上方，所述激发件通过反射的方式对所述激光源出射的光进行激发。
可选的，所述反光杯笼罩于所述激发件的上方，且所述反光杯的出光角度为侧向出光。
可选的，所述激光源设置于所述反光杯上，所述激光源出射的激光光束，与所述反光杯反射之后的最终出光光束之间的夹角固定。
可选的，所述激光源设置于所述激发件的下方，所述激发件通过折射的方式对所述激光源出射的光进行激发。
可选的，在所述激光源与所述激发件之间，还设有至少一个聚光透镜。
可选的，所述反光杯笼罩于所述激发件的周围，所述激发件位于所述反光杯的杯底，且所述反光杯的出光角度为杯口出光。
可选的，所述激光源为蓝色激光二极管。
可选的，所述遮光片由深色材料制成。
可选的，所述遮光片的导热率大于等于预设导热阈值。
 有益效果
本发明实施例提供一种灯具，包括激光源、激发件和反光杯，反光杯将激发件笼罩于其中；激发件包括荧光片，和环绕荧光片且设置于荧光片周围的遮光片；在工作状态下，激光源出射的光朝向激发件，且在经过荧光片激发后形成均匀色调的散射光线，边缘的光被遮光片吸收；散射光线再经由反光杯反射后向指定方向出射。从而通过在荧光片周围设置遮光片，来实现对激光源发出的多余的光的吸收，避免了荧光片激发时光斑不均，光色不一的问题，提升了照明效果。
 附图说明
下面将结合附图及实施例对本发明实施例作进一步说明，附图中：
图1为第一实施例中的灯具结构图；
图2为第一实施例中的车载激光灯光路结构示意图；
图3为第二实施例中的灯具结构图。
 本发明的实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明实施例，并不用于限定本发明实施例。
第一实施例
请参考图1，本实施例提供了一种灯具，包括激光源1、激发件2和反光杯3，反光杯3将激发件2笼罩于其中；激发件2包括荧光片21，和环绕荧光片21且设置于荧光片21周围的遮光片22；在工作状态下，激光源1出射的光朝向激发件2，且在经过荧光片21激发后形成均匀色调的散射光线，边缘的光被遮光片22吸收；散射光线再经由反光杯3反射后向指定方向出射。
本实施例中的灯具，采用激光源1作为光源，然后通过激发件2激发后，得到相应的色光出射。对于灯具而言，其至少具有光源以及光路处理的部件，其中光路处理的部件，也就是本实施例中的激发件2和反光杯3。激发件2用于对激光源1发出的激光进行激发，一方面可以通过激发改变光色，得到想要的色光，一方面可以改变光路，从而使得激光源1的设置更加灵活。因为激光具有高集中度高强度的特性，激光源1本身的照明范围是很小的，通过激发件2和反光杯3，来实现对激光源1的光路的调整，得到所要的光路。在本实施例中，激光源1可以为蓝色激光二极管。
具体的，在本实施例中，激发件2包括荧光片21和遮光片22，其中荧光片21用于激光的激发，遮光片22则用于吸收多余的光。遮光片22设置于荧光片21的周围，可以是与荧光片21一体成型，也可以是分开设置，然后将遮光片22包覆于荧光片21的周围。为了遮光片22能有更好的吸收光线的效果，在一些实施例中，遮光片22由深色材料制成。比如说，遮光片22可以是黑色的，或者是深褐色的，这样对于光线的吸收效果更好。当然，遮光片22仅仅是吸收边缘的光，对于激光源1所发出的激光的中心部位则是被荧光片21接收，经激发散射形成散射光线。
荧光片21的大小小于等于激光源1所发出的光的光束大小，这样可以保证激光源1所照射在荧光片21上的光是均匀的，那么荧光片21所激发出的光也是均匀的；而激光源1所发出的光的光束大于荧光片21的部分，则被遮光片22所吸收。
激光源1的特点是能量高，而能量高的光源会给其照射的目标造成显著的升温效果，也就是激发件2会有显著的升温，如果温度过高，可能会影响激发件2的效果。因此，在一些实施例中，可以设置遮光片22的导热率大于等于预设导热阈值，也就是将遮光片22设置为高导热率的材料，让遮光片22来实现热量的传导，使得荧光片21的热量，可以通过遮光片22快速散发；可选的，遮光片22可以是金属等高导热材料。
本实施例中的激发件2，按照激发光路的原理，可以分为反射式激发和折射式激发，也就是激光源1发出的激光，在出射到激发件2上的荧光片21上之后的散射光线是以反射光的形式散射的话，则是反射式激发；在出射到激光件上的荧光片21上之后的散射光线是以折射光的形式散射的话，则是折射式激发。其中，反射式激发如下：
在反射式激发中，激光源1设置于激发件2的上方，激发件2通过反射的方式对激光源1出射的光进行激发。反射式激发，其中激光源1应当和最终出射的光位于激发件2的同侧；请参考图1，图1即为反射式激发的结构示意图，其中激光源1发出的光，从上方出射到激发件2上的荧光片21，然后荧光片21反射出散射光线，散射光线再经过反光杯3，将光线通过制定的方向出射。
其中，反光杯3笼罩于激发件2的上方，且反光杯3的出光角度为侧向出光。继续参考图1，图1中的反光杯3笼罩在上方，来反射激发件2所反射出的散射光线。
在一些实施例中，激光源1设置于反光杯3上，激光源1出射的激光光束，与反光杯3反射之后的最终出光光束之间的夹角固定。激光源1出射的光可以近似认为是平行光，而在本实施例中，经过反光杯3所最终出射的光也是平行光，因此，激光源1出射的激光光束，与反光杯3反射之后的最终出光光束之间的夹角是固定的，而且请参考图2。而且，对于本实施例中的灯具而言，反光杯3所最终出射的出光光束的角度，优选为平行于地面的光。
在一些实施例中，激光源1设置于反光杯3上，激光源1的出射角度与反光杯3的出光角度具有相同方向的角度分量。请参考图2，激光源1与最初出射光位于激发件2的同侧，而激光源1的出射角度，与反光杯3的出光角度具有相同方向的角度分量，表示的是激光源1的出射光即有偏向最终出射光的方向。图2中，激光源1的出射光为A，反光杯的出射光给B，其中A和B均有图中水平向右角度的分量。角度分量可以从横纵方向进行划分，优选的，激光源1的出射光的出射角度，与法线方向上的夹角可以为45°。
本实施例提供一种灯具，包括激光源1、激发件2和反光杯3，反光杯3将激发件2笼罩于其中；激发件2包括荧光片21，和环绕荧光片21且设置于荧光片21周围的遮光片22；在工作状态下，激光源1出射的光朝向激发件2，且在经过荧光片21激发后形成均匀色调的散射光线，边缘的光被遮光片22吸收；散射光线再经由反光杯3反射后向指定方向出射。从而通过在荧光片21周围设置遮光片22，来实现对激光源1发出的多余的光的吸收，避免了荧光片21激发时光斑不均，光色不一的问题，提升了照明效果。 
第二实施例
请参考图3，本实施例提供了一种灯具，包括激光源1、激发件2和反光杯3，反光杯3将激发件2笼罩于其中；激发件2包括荧光片21，和环绕荧光片21且设置于荧光片21周围的遮光片22；在工作状态下，激光源1出射的光朝向激发件2，且在经过荧光片21激发后形成均匀色调的散射光线，边缘的光被遮光片22吸收；散射光线再经由反光杯3反射后向指定方向出射。
本实施例中的灯具，采用激光源1作为光源，然后通过激发件2激发后，得到相应的色光出射。对于灯具而言，其至少具有光源以及光路处理的部件，其中光路处理的部件，也就是本实施例中的激发件2和反光杯3。激发件2用于对激光源1发出的激光进行激发，一方面可以通过激发改变光色，得到想要的色光，一方面可以改变光路，从而使得激光源1的设置更加灵活。因为激光具有高集中度高强度的特性，激光源1本身的照明范围是很小的，通过激发件2和反光杯3，来实现对激光源1的光路的调整，得到所要的光路。在本实施例中，激光源1可以为蓝色激光二极管。
具体的，在本实施例中，激发件2包括荧光片21和遮光片22，其中荧光片21用于激光的激发，遮光片22则用于吸收多余的光。遮光片22设置于荧光片21的周围，可以是与荧光片21一体成型，也可以是分开设置，然后将遮光片22包覆于荧光片21的周围。为了遮光片22能有更好的吸收光线的效果，在一些实施例中，遮光片22由深色材料制成。比如说，遮光片22可以是黑色的，或者是深褐色的，这样对于光线的吸收效果更好。当然，遮光片22仅仅是吸收边缘的光，对于激光源1所发出的激光的中心部位则是被荧光片21接收，经激发散射形成散射光线。
荧光片21的大小小于等于激光源1所发出的光的光束大小，这样可以保证激光源1所照射在荧光片21上的光是均匀的，那么荧光片21所激发出的光也是均匀的；而激光源1所发出的光的光束大于荧光片21的部分，则被遮光片22所吸收。
激光源1的特点是能量高，而能量高的光源会给其照射的目标造成显著的升温效果，也就是激发件2会有显著的升温，如果温度过高，可能会影响激发件2的效果。因此，在一些实施例中，可以设置遮光片22的导热率大于等于预设导热阈值，也就是将遮光片22设置为高导热率的材料，让遮光片22来实现热量的传导，使得荧光片21的热量，可以通过遮光片22快速散发；可选的，遮光片22可以是金属等高导热材料。
本实施例中的激发件2，按照激发光路的原理，可以分为反射式激发和折射式激发。其中，折射式激发如下：
激光源1设置于激发件2的下方，激发件2通过折射的方式对激光源1出射的进行激发。请参考图3，示出了一种折射式激发的结构图，折射式激发原理，导致了激光源1和最终出射的光应当位于激发件2的异侧，也就是分立于激发件2的两边。这种情况下，激发件2中的荧光片21是透光的。
在一些实施例中，在激光源1与激发件2之间，还可以设有至少一个聚光透镜。聚光透镜的设置可以进一步提升激光源1的聚光效果，提升激光源1出射光射到激发件2上的方向性和强度。一般而言，聚光透镜即是凸透镜。
在一些实施例中，反光杯3笼罩于激发件2的周围，激发件位于所述反光杯的杯底，且所述反光杯的出光角度为杯口出光，即从而其最终出射光的方向是沿激发件2方向直接向外。
本实施例提供一种灯具，包括激光源1、激发件2和反光杯3，反光杯3将激发件2笼罩于其中；激发件2包括荧光片21，和环绕荧光片21且设置于荧光片21周围的遮光片22；在工作状态下，激光源1出射的光朝向激发件2，且在经过荧光片21激发后形成均匀色调的散射光线，边缘的光被遮光片22吸收；散射光线再经由反光杯3反射后向指定方向出射。从而通过在荧光片21周围设置遮光片22，来实现对激光源1发出的多余的光的吸收，避免了荧光片21激发时光斑不均，光色不一的问题，提升了照明效果。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
上面结合附图对本发明的实施例进行了描述，但是本发明实施例并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明实施例的启示下，在不脱离本发明实施例宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明实施例的保护之内。

Claims (10)

  1. 一种灯具，其特征在于，包括激光源、激发件和反光杯，所述反光杯将所述激发件笼罩于其中；所述激发件包括荧光片，和环绕所述荧光片且设置于荧光片周围的遮光片；在工作状态下，所述激光源出射的光射入所述激发件，且在经过所述荧光片激发后形成均匀色调的散射光线，边缘的光被所述遮光片吸收；所述散射光线再经由所述反光杯反射后向指定方向出射。
  2. 如权利要求1所述的灯具，其特征在于，所述激光源设置于所述激发件的上方，所述激发件通过反射的方式对所述激光源出射的光进行激发。
  3. 如权利要求2所述的灯具，其特征在于，所述反光杯笼罩于所述激发件的上方，且所述反光杯的出光角度为侧向出光。
  4. 如权利要求2所述的灯具，其特征在于，所述激光源设置于所述反光杯上，所述激光源出射的激光光束，与所述反光杯反射之后的最终出光光束之间的夹角固定。
  5. 如权利要求1所述的灯具，其特征在于，所述激光源设置于所述激发件的下方，所述激发件通过折射的方式对所述激光源出射的光进行激发。
  6. 如权利要求5所述的灯具，其特征在于，在所述激光源与所述激发件之间，还设有至少一个聚光透镜。
  7. 如权利要求5所述的灯具，其特征在于，所述反光杯笼罩于所述激发件的周围，所述激发件位于所述反光杯的杯底，且所述反光杯的出光角度为杯口出光。
  8. 如权利要求1-7任一项所述的灯具，其特征在于，所述激光源为蓝色激光二极管。
  9. 如权利要求1-7任一项所述的灯具，其特征在于，所述遮光片由深色材料制成。
  10. 如权利要求9所述的灯具，其特征在于，所述遮光片的导热率大于等于预设导热阈值。
PCT/CN2020/134704 2019-12-31 2020-12-09 一种灯具 WO2021135865A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911420763.0 2019-12-31
CN201911420763.0A CN113048442A (zh) 2019-12-31 2019-12-31 一种灯具

Publications (1)

Publication Number Publication Date
WO2021135865A1 true WO2021135865A1 (zh) 2021-07-08

Family

ID=76507532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/134704 WO2021135865A1 (zh) 2019-12-31 2020-12-09 一种灯具

Country Status (2)

Country Link
CN (1) CN113048442A (zh)
WO (1) WO2021135865A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016134377A (ja) * 2015-01-22 2016-07-25 スタンレー電気株式会社 灯具
CN106838754A (zh) * 2015-12-03 2017-06-13 深圳市光峰光电技术有限公司 车灯照明***及其驱动方法
CN107166180A (zh) * 2017-06-14 2017-09-15 杨毅 灯具
CN207006050U (zh) * 2017-05-25 2018-02-13 杭州有人光电技术有限公司 一种用于激光诱导荧光的准直照明反光杯及准直照明***
CN109899694A (zh) * 2017-12-11 2019-06-18 上海航空电器有限公司 采用光学透镜和反光杯的激光照明单元及光学***
CN211694705U (zh) * 2019-12-31 2020-10-16 深圳市聚飞光电股份有限公司 一种车载激光灯

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012169050A (ja) * 2011-02-10 2012-09-06 Stanley Electric Co Ltd 車両用灯具
CN102425751A (zh) * 2011-11-17 2012-04-25 郑伟 Led汽车前照灯以及制作方法
DE102012205438A1 (de) * 2012-04-03 2013-10-10 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug
CN106678668A (zh) * 2015-10-29 2017-05-17 长城汽车股份有限公司 激光照明用光色转换器
CN107314324B (zh) * 2017-08-10 2024-03-26 广州市超亮电子科技有限公司 一种激光led双光源远光车灯

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016134377A (ja) * 2015-01-22 2016-07-25 スタンレー電気株式会社 灯具
CN106838754A (zh) * 2015-12-03 2017-06-13 深圳市光峰光电技术有限公司 车灯照明***及其驱动方法
CN207006050U (zh) * 2017-05-25 2018-02-13 杭州有人光电技术有限公司 一种用于激光诱导荧光的准直照明反光杯及准直照明***
CN107166180A (zh) * 2017-06-14 2017-09-15 杨毅 灯具
CN109899694A (zh) * 2017-12-11 2019-06-18 上海航空电器有限公司 采用光学透镜和反光杯的激光照明单元及光学***
CN211694705U (zh) * 2019-12-31 2020-10-16 深圳市聚飞光电股份有限公司 一种车载激光灯

Also Published As

Publication number Publication date
CN113048442A (zh) 2021-06-29

Similar Documents

Publication Publication Date Title
JP6164518B2 (ja) 車両用前照灯
JP6342279B2 (ja) 発光装置
JP5445923B2 (ja) 車両用灯具
JP6289700B2 (ja) 前照灯モジュール
JP5657357B2 (ja) 車両用灯具
US20030202359A1 (en) Screenless elliptical illumination module producing an illumination beam with cutoff and lamp comprising such a module
JP5883623B2 (ja) レーザ光源装置
US10436408B2 (en) Lighting device, corresponding lamp and method
JP5397186B2 (ja) 車両用灯具
JP5722068B2 (ja) 光源装置、照明装置および車両用前照灯
US10253941B2 (en) Lighting device, corresponding lamp and method
US20120051027A1 (en) Light projection structure and lighting apparatus
JP5043597B2 (ja) ダイレクトプロジェクション型照明用灯具
JP2015005439A (ja) 車両用前照灯及び車両用前照灯に用いられる光ファイババンドル
JP5829478B2 (ja) 車両用灯具
JP5445049B2 (ja) 車両用灯具
CN215216044U (zh) 车灯照明结构及车灯
JP5446757B2 (ja) 車両用灯具
CN211694705U (zh) 一种车载激光灯
WO2021135865A1 (zh) 一种灯具
JP6052599B2 (ja) 車両用前照灯
WO2019227938A1 (zh) 光源模组
JP5397174B2 (ja) 車両用灯具
CN219606856U (zh) 一种反射式激光照明装置
JP6509570B2 (ja) 灯具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20908853

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20908853

Country of ref document: EP

Kind code of ref document: A1