WO2020019396A1 - 一种汽车大灯及其激光辅助远光模组和激光安全检测装置 - Google Patents

一种汽车大灯及其激光辅助远光模组和激光安全检测装置 Download PDF

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WO2020019396A1
WO2020019396A1 PCT/CN2018/102724 CN2018102724W WO2020019396A1 WO 2020019396 A1 WO2020019396 A1 WO 2020019396A1 CN 2018102724 W CN2018102724 W CN 2018102724W WO 2020019396 A1 WO2020019396 A1 WO 2020019396A1
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laser
light
conversion device
fluorescence conversion
leakage port
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PCT/CN2018/102724
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English (en)
French (fr)
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张韬
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华域视觉科技(上海)有限公司
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Priority claimed from CN201810842729.1A external-priority patent/CN109027950A/zh
Priority claimed from CN201821204683.2U external-priority patent/CN209341136U/zh
Application filed by 华域视觉科技(上海)有限公司 filed Critical 华域视觉科技(上海)有限公司
Publication of WO2020019396A1 publication Critical patent/WO2020019396A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/70—Prevention of harmful light leakage
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material

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  • the invention relates to a car headlight using a laser as a light source, in particular a laser safety detection of a car light, and particularly relates to a car headlight, a laser-assisted high beam module and a laser safety detection device thereof.
  • the laser white light source and the LED light source do not have much difference in the nature of generating white light.
  • the basic principle of light emission is to generate yellow light by exciting the phosphor with blue light, and the blue light and yellow light excited through the phosphor are mixed to form white light.
  • the biggest difference between the two light sources is that the blue light emitted by the semiconductor in the LED light source has a large angle, and the fluorescence conversion device is relatively close to the semiconductor.
  • the laser semiconductor has a relatively small light emitting angle.
  • a laser shaping lens is used to converge the light spots or emit in parallel. The distance between the fluorescence conversion device and the laser semiconductor is relatively long.
  • Fig. 1 and Fig. 2 when the light emitting principle is basically similar, the biggest difference between the white LED and the white laser source is reflected in the white light emitting area, of which the single chip white LED light emitting area is about 1 mm 2 and the single chip white light
  • the core area of the laser source is 0.05 mm 2 .
  • the main reason for this difference is that the light emitting properties of the LED semiconductor and the laser semiconductor are different, and the ways of using the light emitted by the two light emitting semiconductors are different.
  • the small light emitting area makes the laser light source particularly suitable for making high-brightness products.
  • the object of the present invention is to provide a car headlight, its auxiliary high beam module and a laser safety detection device.
  • the invention can realize real-time safety detection and passive safety protection when a laser leak is detected, and is a white light laser source.
  • the use in the lighting industry provides safety protection to avoid laser leakage causing harm to human eyes. It is used to solve the technical problem that when laser light is used as the light source for current vehicle lights, the eyes of pedestrians and drivers across the road will be injured due to laser leakage.
  • a technical solution of the present invention is: a vehicle lamp auxiliary high beam module, the laser module includes a laser light source, a shaping lens, a first fluorescence conversion device, and a reflector, and the laser light source is used for In order to irradiate the emitted blue laser light to the shaping lens, the first fluorescence conversion device is used to convert the blue laser light passing through the shaping lens into white light and irradiate the reflecting lens.
  • the vehicle-light-assisted high beam module includes laser safety A detection device, the laser safety detection device includes a second fluorescence conversion device and a light leakage opening, the light leakage opening is opened on a reflector, and the second fluorescence conversion device is disposed at the light leakage opening;
  • the leaked blue light irradiates the second fluorescence conversion device, and the second fluorescence conversion device converts the leaked blue light into mixed white light; the second fluorescence conversion device occurs When the fault occurs, the unconverted blue light falls within the range of the light leakage port, thereby preventing the blue light from irradiating the pedestrian and causing passive safety protection.
  • the specific size of the light leakage port is determined by the blue light emission boundary emitted by the laser light source.
  • the second fluorescence conversion device is a silica gel mixed with phosphor powder or a ceramic mixed with phosphor powder and sintered.
  • silica gel mixed with fluorescent powder is filled at the light leakage port.
  • silica gel mixed with fluorescent powder is injection-molded into a silica gel plug, and the silica gel plug is installed at the light leakage port.
  • the laser safety detection device includes a detector disposed in a confined space, the detector is located above the light leakage port and directly faces the laser light source, passes through the light leakage port and the blue light of the second fluorescence conversion device or The mixed light directly reaches the detector, and the detector determines whether a blue light leak occurs based on the detected light intensity. If an increase in light intensity is detected, a feedback signal is sent to turn off the laser light source to achieve active safety protection.
  • a filter is arranged at the front end of the detector, and the filter is used to reduce the intensity of the light reaching the detector so that the detector works within an effective range.
  • Another technical solution of the present invention is: a laser safety detection device used in the above-mentioned lamp auxiliary high beam module.
  • the third technical solution of the present invention is: a car headlight using the above-mentioned headlight auxiliary high beam module.
  • the present invention provides two fluorescent conversion devices to perform a second conversion of blue light, which provides further security for the use of white light laser sources in the lighting industry and further prevents laser leakage from causing harm to human eyes.
  • the second fluorescence conversion device can convert the blue light leaking from the crack or hole into mixed white light again, and can also reduce the energy detected by the detector , And improve the design difficulty of the filter in front of the detector.
  • FIG. 1 is a working principle diagram of a white light LED
  • FIG. 3 is a schematic diagram of a state of laser leakage
  • FIG. 4 is a schematic structural diagram of a laser module according to the present invention.
  • FIG. 5 is a schematic diagram of the opening of a reflector of the present invention, and a silica gel mixed with phosphor powder is filled at a light leakage port.
  • 1 is a laser light source
  • 2 is a shaping lens
  • 3 is a first fluorescence conversion device
  • 4 is a second fluorescence conversion device
  • 5 is a filter
  • 6 is a detector
  • 7 is blue light collected after the shaping lens.
  • the auxiliary high beam module of the present invention uses a reflective light distribution method, and uses two laser modules.
  • the laser module according to the present invention includes a laser light source, a shaping lens, a first fluorescence conversion device, and a reflecting mirror.
  • the blue laser light emitted by the laser light source passes through the shaping lens and then passes through the first fluorescence conversion device to reach the reflecting mirror.
  • the laser module according to the present invention further includes a laser safety detection device, which can perform active safety detection and passive safety protection.
  • the active safety detection is performed by a detector in real time, and the passive safety protection opens a light leakage port on the reflector, and the light leakage
  • a second fluorescence conversion device is set at the mouth, and the detector is set in a closed space, and is located above the light leakage port, and is directly opposite to the laser light source.
  • a filter is set at the front end of the detector.
  • the purpose of setting a second fluorescence conversion device at the light leakage port is to convert blue light leaking from cracks or holes into mixed white light in the event that the first fluorescence conversion device is cracked or penetrated by laser light, to further prevent blue light leakage .
  • the energy detected by the detector can be reduced, and the design difficulty of the filter in front of the detector can be improved.
  • the fluorescence conversion device has a sensitive response to blue light
  • the placement of the second fluorescence conversion device will not affect the detection accuracy of the detector, and because the laser in the present invention is a four-level laser, its higher energy is very likely to cause biological damage. Harm. Therefore, in order to prevent the leaked blue light from reflecting inside the lamp body after passing through the light leak port, the present invention adds a secondary fluorescence conversion device at the light leak port to convert the leaked harmful blue light into harmless mixed white light.
  • the purpose of opening a light leakage port on the reflector is to keep the unconverted blue light inside the light leakage port when the second fluorescence conversion device fails at the same time, to prevent the blue light from being projected out through the reflecting surface to cause pedestrian injury, and to achieve passive safety protection.
  • the purpose of setting the detector above the light leakage port is to make the mixed light passing through the light leakage port and the second fluorescence conversion device directly reach the detector, and the detector detects the intensity of the detected mixed light in real time, and judges based on the intensity of the mixed light Whether there is blue light leakage. If the detector recognizes that the energy of the mixed light increases during the monitoring process, you can confirm that more blue light leaks out, then feedback the signal and turn off the laser light source to achieve active safety protection.
  • the purpose of setting the filter Since the car-level photoelectric sensors are more sensitive, setting the filter can reduce the intensity of the light reaching the detector, so that the detector works within a valid range.
  • the present invention can reduce the difficulty of designing the filter by providing a second fluorescence conversion device. Due to the large energy of the laser module, the filter group needs to be strictly designed without the second fluorescence conversion device to ensure that The energy emitted by the normally-emitting laser light source on the detector is within the detection range of the detector. However, due to the addition of a second fluorescence conversion device, which can effectively reduce the energy intensity of the laser light source detected on the detector, it can reduce the difficulty of designing and processing the filter set, thereby reducing the cost.
  • the second fluorescence conversion device is silica gel mixed with phosphor powder, and the silica gel mixed with phosphor powder can be filled at the light leakage port as the second fluorescence conversion device.
  • the material of the second fluorescence conversion device is not limited to silica gel As long as other materials mixed with phosphor powder can achieve the filling effect, for example: PC mixed with phosphor powder, PMMA mixed with phosphor powder.
  • Phosphor is a material that converts blue light in the 440-460nm wavelength band.
  • the general material is yttrium aluminum garnet, commonly known as YAG.
  • the specific size of the light leakage port is determined by the blue light emission boundary of the laser light source after the shaping lens.
  • the light leakage port needs to ensure that the leaked blue light that may be generated in the laser light source completely passes through the mirror, or when the first fluorescence conversion device or the second fluorescence device completely falls off, the leaked blue light can be completely maintained within the range of the light leakage port without being irradiated On the reflector, this light leakage port is used to achieve passive protection, as shown in Figure 5.
  • the laser beam emitted by the laser light source is converged on the first fluorescence conversion device after passing through the shaping lens, and the divergence angle thereof is: a long axis divergence angle of 10 degrees on a horizontal plane and a short axis divergence angle of 5 degrees. Then, the size of the light leakage port on the reflector needs to ensure that all the blue light can enter the light leakage port when the divergence angle is 10 degrees and 5 degrees.
  • the detectors corresponding to the laser light sources of the two laser modules are placed in a closed space, and the light can reach the detector only through the light leakage port. .
  • the second fluorescent conversion device is a silicone plug made of injection-molded silicone mixed with fluorescent powder.
  • the silicone plug is installed at the light leakage port to form a second fluorescent conversion device.
  • the material of the second fluorescence conversion device is not limited to silica gel, other materials mixed with phosphors can be used as long as they can achieve the injection molding effect, for example: PC mixed with phosphors, PMMA mixed with phosphors, but these two are used
  • the injection-molded parts of the material need to be installed by means of fixing, such as screwing.
  • the vehicle lamp auxiliary high beam module of the present invention provides a safety guarantee for the use of a white light laser source in the lighting industry and prevents laser leakage from causing harm to human eyes.
  • the laser safety detection device of this embodiment uses the above-mentioned laser safety detection device of the auxiliary high beam module.
  • the automobile headlight of this embodiment includes the auxiliary high beam module of the above embodiment.

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

Abstract

一种汽车大灯及其车灯辅助远光模组和激光安全检测装置。该车灯辅助远光模组包括激光模组，激光模组包括激光光源（1）、整形透镜（2）、第一荧光转换器件（3）和反射镜。激光光源（1）用于将发出的蓝光激光照射到整形透镜（2），第一荧光转换器件（3）用于将穿过整形透镜（2）的蓝光激光（7）转换为白光，并照射到反射镜上。车灯辅助远光模组还包括激光安全检测装置，该激光安全检测装置包括第二荧光转换器件（4）和漏光口，漏光口开设于反射镜上，第二荧光转换器件（4）设置于漏光口处；第二荧光转换器件（4）用于在第一荧光转换器件（3）产生破裂或被激光击穿发生蓝光泄漏时，将泄漏的蓝光转换为混合的白光。基于上述装置，可以实现车灯的安全防护，为白光激光源使用在照明行业提供了安全保障，避免激光泄漏对人眼造成伤害，解决目前的车灯采用激光做光源时，由于激光泄漏对行人及对面驾驶者的眼睛造成伤害的技术问题。

Description

一种汽车大灯及其激光辅助远光模组和激光安全检测装置 技术领域
本发明涉及采用激光做光源的汽车大灯，特别是车灯的激光安全检测，具体涉及一种汽车大灯及其激光辅助远光模组和激光安全检测装置。
背景技术
伴随着光源技术的发展，激光作为一种崭新的光源逐步进入汽车市场，由于激光的高亮度和激光光源本身的良好准直性能而被市场热捧。目前已经有激光做光源制作远光和辅助远光的灯具在市场上出现。但是激光作为特殊光源在使用中需要额外的注意，根据国家法规的描述，Class 3 B级以及class 4级激光都可能对人眼造成永久损伤,使用不当将会对行人和对面行车的驾驶者造成伤害。
激光白光光源与LED光源在产生白光的本质上没有太大的差别，其发光的基本原理都是通过蓝光激发荧光粉产生黄光，透过荧光粉的蓝光和激发的黄光混合形成了白光。两种光源的最大区别在于LED光源中的半导体发出的蓝光角度较大，荧光转换器件距离半导体的距离也相对较近。而激光半导体的发光角度较小，一般会搭配一个激光整形透镜将光斑汇聚或平行发射，荧光转换器件距离激光半导体的距离也相对较远。
从图1和图2中可以得知，在发光原理基本类似的情况下，白光LED和白光激光源最大的差别体现在白光发光面积上，其中单芯片白光LED发光面积约1mm 2，单芯片白光激光源核心发光面积为0.05mm 2。而造成此区别的主要原因在于LED半导体和激光半导体的发光性质有所区别，且对两个发光半导体发出的光线的利用方式不同。较小的发光面积使得激光光源特别适合用于制作高亮度的产品。
如图3，当由于外力或激光所产生的高能光束击碎、击穿荧光转换器件时，会有部分蓝光激光穿过裂隙直接到达外侧。根据配光形式的不同，此蓝光会最终被投射到路面 上。目前为了实现较高的光通量，激光模组中所使用的半导体激光的功率一般都会达到1W以上。根据安全组织对激光的定义1W的激光被归类于Class 4激光器。此级别的激光器意味着短暂的直视也会对人眼造成永久伤害。这意味着当荧光器件完整时，其输出的连续白光就是无害的，但是当其内部的class 4蓝色激光产生泄漏时，就有可能对人眼造成伤害。
发明内容
本发明的目的是提供一种汽车大灯及其辅助远光模组和激光安全检测装置，本发明能够在检测到激光发生泄漏时，实现实时的安全检测和被动的安全防护，为白光激光源使用在照明行业提供了安全保障，避免激光泄漏对人眼造成伤害。用以解决目前的车灯采用激光做光源时，由于激光泄漏对行人及对面驾驶者的眼睛造成伤害的技术问题。
为实现上述目的，本发明的一个技术方案是：一种车灯辅助远光模组，所述的激光模组包括激光光源、整形透镜、第一荧光转换器件和反射镜，所述激光光源用于将发出的蓝光激光照射到整形透镜，第一荧光转换器件用于将穿过整形透镜的蓝光激光转换为白光，并照射到反射镜上，所述的车灯辅助远光模组包括激光安全检测装置，所述的激光安全检测装置包括第二荧光转换器件和漏光口，所述漏光口开设于反射镜上，所述第二荧光转换器件设置于漏光口处；
当第一荧光转换器件产生破裂或被激光击穿发生蓝光泄漏时，泄漏的蓝光照射到第二荧光转换器件，第二荧光转换器件将泄漏的蓝光转换为混合的白光；第二荧光转换器件发生故障时，未被转换的蓝光落在漏光口的范围内，从而避免蓝光照射出去对行人造成伤害，实现被动安全防护。
进一步地，所述漏光口的具体尺寸由激光光源发出的蓝光发光边界来确定，在第二荧光转换器件完全破碎的情况下，经过整形透镜后的所有蓝光能够全部进入漏光口。
进一步地，所述的第二荧光转换器件为混有荧光粉的硅胶或者混有荧光粉烧结而成的陶瓷。
进一步地，所述的混有荧光粉的硅胶填充于漏光口处。
进一步地，混有荧光粉的硅胶被注塑成硅胶孔塞，所述的硅胶孔塞安装在漏光口处。
进一步地，所述的激光安全检测装置包括设置于密闭空间中的探测器，所述探测器位于漏光口的上方，且正对激光光源的位置，经过漏光口和第二荧光转换器件的蓝光或者混合光直接到达探测器，探测器根据检测到的光强来判定是否发生蓝光泄漏，如果检测到光强增加，则发出反馈信号关闭激光光源，实现主动安全防护。
进一步地，所述探测器的前端设置滤光片，所述滤光片用于减弱到达探测器的光强，以使探测器工作在有效的范围内。
本发明的另一个技术方案是：用于上述车灯辅助远光模组中的激光安全检测装置。
本发明的第三个技术方案是：采用上述车灯辅助远光模组的汽车大灯。
本发明达到的有益效果：本发明通过设置两个荧光转换器件，对蓝光进行了二次转换，为白光激光源使用在照明行业提供了进一步地安全保障，进一步避免激光泄漏对人眼造成伤害。
在第一荧光转换器件产生破裂或被激光击穿的情况下，第二荧光转换器件可以将从裂痕或者孔洞中漏出的蓝光再次转换为混合的白光，同时也可以减小探测器检测到的能量，并改善探测器前滤光片的设计难度。
附图说明
图1是白光LED工作原理图；
图2是白光激光源工作原理图；
图3是激光泄漏的状态示意图；
图4是本发明激光模组的结构示意图；
图5是本发明反射镜开口示意图,混有荧光粉的硅胶填充在漏光口处。
图中，1为激光光源,2为整形透镜，3为第一荧光转换器件，4为第二荧光转换器件，5为滤光片，6为探测器，7为经过整形透镜后汇聚的蓝光。
具体实施方式
下面结合附图和具体的实施例对本发明作进一步详细的说明。
辅助远光模组实施例：
实施例一：
本发明的辅助远光模组采用的是反射式配光方法，并且采用了两颗激光模组。如图4，本发明所述的激光模组包括激光光源、整形透镜、第一荧光转换器件和反射镜，激光光源发出的蓝光激光穿过整形透镜，再经过第一荧光转换器件到达反射镜。
本发明所述的激光模组还包括激光安全检测装置，可进行主动安全检测和被动安全保护，其中，主动安全检测通过探测器进行实时检测，被动安全保护在反射镜上开设漏光口，且漏光口处设置第二荧光转换器件，而探测器设置于密闭的空间中，且位于漏光口的上方，且正对激光光源的位置，在探测器的前端设置滤光片。
在漏光口处设置第二荧光转换器件的目的是：在第一荧光转换器件产生破裂或被激光击穿的情况下，将从裂痕或者孔洞中漏出的蓝光转换为混合的白光，进一步避免蓝光泄漏。与此同时也可以减小探测器检测到的能量，并改善探测器前滤光片的设计难度。
由于荧光转换器件对蓝光有敏感的响应能力,因此放置第二荧光转换器件不会影响探测器的检测精度，而且由于本发明中的激光属于四级激光,其较高的能量非常容易对生物造成伤害，因此，为了避免泄漏的蓝光经过漏光口后在灯体内部反射,本发明在漏光口处增加二次荧光转换器件,将泄漏的有害蓝光转换成无害的混合白光。
反射镜上开设漏光口的目的是：当第二荧光转换器件同时发生故障时，使得未被转换的蓝光保持在漏光口内，避免蓝光经过反射面投射出去对行人造成伤害，实现被动安全防护。
在漏光口上方设置探测器的目的是：使得经过漏光口和第二荧光转换器件的混合光直接到达探测器，探测器则实时检测探测到的混合光的强度，并根据混合光的强度来判定是否发生蓝光泄漏，若探测器在监控过程中，识别到混合光的能量增加，则可以确认有更多的蓝光泄漏出来，则反馈信号，关闭激光光源，实现主动安全防护。
设置滤光片的目的：由于车载级光电传感器都比较灵敏，设置滤光片可以减弱到达探测器的光强，以使探测器工作在有效的范围内。
本发明通过设置第二荧光转换器件可以降低对于滤光片的设计难度.由于激光模组能量较大,在没有第二荧光转换器件的情况下，滤光片组需要经过严格的设计，才能保证正常发光的激光光源照射在探测器上的能量在探测器的检测范围内。但是目前由于 增加了第二荧光转换器件.其能够有效的减弱探测器上检测到的激光光源的能量强度,因此能够降低滤光片组的设计和加工难度,从而起到降低成本的目的。
本实施例中，第二荧光转换器件为混有荧光粉的硅胶，可将混有荧光粉的硅胶填充于漏光口处作为第二荧光转换器件，当然，第二荧光转换器件的材料不限于硅胶，其他混有荧光粉的材料只要能实现填充效果的都可以，例如：混有荧光粉的PC,混有荧光粉的PMMA。荧光粉为对440-460nm波长波段内的蓝光起波长转换作用的材料.一般材质为钇铝石榴石,俗称YAG。
漏光口的具体尺寸由激光光源中经过整形透镜后的蓝光发光边界来确定。漏光口需要保证激光光源中可能产生的泄漏蓝光完全通过反射镜，或者说当第一荧光转换器件或第二荧光器件完全脱落时，泄漏的蓝光能够完全保持在漏光口范围内，而不会照射在反射镜上，此漏光口用以实现被动防护的作用，如图5所示。
在本实施例中，由激光光源发出的激光束在经过整形透镜后汇聚在第一荧光转换器件上，其发散角为：水平面上长轴发散角10度，短轴发散角5度。那么反射镜上的漏光口大小需要保证在发散角为10度和5度的情况下所有蓝光能够全部进入漏光口。
为了保证探测器在探测过程中不受其他外部光线的干扰，本实施例将两个激光模组的激光光源各自对应的探测器都放置在密闭的空间中，光线只有经过漏光口才能到达探测器。
实施例二：
本实施例二与实施例一的区别在于：第二荧光转换器件为混有荧光粉的硅胶注塑成的硅胶孔塞，将所述的硅胶孔塞安装在漏光口处形成第二荧光转换器件。当然，第二荧光转换器件的材料不限于硅胶，其他混有荧光粉的材料只要能实现注塑效果的都可以，例如：混有荧光粉的PC,混有荧光粉的PMMA,但是采用这两种材料的注塑件需要通过固定的形式进行安装,例如打螺钉。
本发明的一种车灯辅助远光模组为白光激光源使用在照明行业提供了安全保障，避免激光泄漏对人眼造成伤害。
激光安全检测装置实施例：
本实施例的激光安全检测装置采用上述辅助远光模组的激光安全检测装置。
汽车大灯实施例：
本实施例的汽车大灯包括上述实施例的辅助远光模组。

Claims (10)

  1. 一种车灯辅助远光模组，所述的车灯辅助远光模组包括激光模组，所述的激光模组包括激光光源、整形透镜、第一荧光转换器件和反射镜，所述激光光源用于将发出的蓝光激光照射到整形透镜，第一荧光转换器件用于将穿过整形透镜的蓝光激光转换为白光，并照射到反射镜上，其特征在于：
    所述的车灯辅助远光模组包括激光安全检测装置，所述的激光安全检测装置包括第二荧光转换器件和漏光口，所述漏光口开设于反射镜上，所述第二荧光转换器件设置于漏光口处；
    当第一荧光转换器件产生破裂或被激光击穿发生蓝光泄漏时，泄漏的蓝光照射到第二荧光转换器件，第二荧光转换器件将泄漏的蓝光转换为混合的白光；第二荧光转换器件发生故障时，未被转换的蓝光落在漏光口的范围内，从而避免蓝光照射出去对行人造成伤害，实现被动安全防护。
  2. 根据权利要求1所述的车灯辅助远光模组，其特征在于，所述漏光口的具体尺寸由激光光源发出的蓝光发光边界来确定，在第二荧光转换器件完全破碎的情况下，经过整形透镜后的所有蓝光能够全部进入漏光口。
  3. 根据权利要求1所述的车灯辅助远光模组，其特征在于，所述的第二荧光转换器件为混有荧光粉的硅胶或者混有荧光粉烧结而成的陶瓷。
  4. 根据权利要求3所述的车灯辅助远光模组，其特征在于，所述的混有荧光粉的硅胶填充于漏光口处。
  5. 根据权利要求3所述的车灯辅助远光模组，其特征在于，混有荧光粉的硅胶被注塑成硅胶孔塞，所述的硅胶孔塞安装在漏光口处。
  6. 根据权利要求1所述的车灯辅助远光模组，其特征在于，所述的激光安全检测装置包括设置于密闭空间中的探测器，所述探测器位于漏光口的上方，且正对激光光源的位置，经过漏光口和第二荧光转换器件的混合光或者蓝光直接到达探测器，探测器根据检测到的光强来判定是否发生蓝光泄漏，如果检测到光强增加，则发出反馈信号关闭激光光源，实现主动安全防护。
  7. 根据权利要求6所述的车灯辅助远光模组，其特征在于，所述探测器的前端设置滤光片，所述滤光片用于减弱到达探测器的光强，以使探测器工作在有效的范围内。
  8. 根据权利要求1所述的车灯辅助远光模组，其特征在于，所述的车灯辅助远光模组包括至少一颗激光模组。
  9. 一种如权利要求1所述的激光安全检测装置。
  10. 一种采用如权利要求1所述车灯辅助远光模组的汽车大灯。
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