阅读说明：本技术 一种安全的激光灯具 (Safe laser lamp ) 是由 唐燕 吴杰 邓亮 丰建芬 薛蔚平 于 2020-04-03 设计创作，主要内容包括：本发明涉及汽车前照灯技术,具体为一种安全的激光灯具,可对激光光源是否有蓝光泄露进行实时检测,一旦检测到因荧光粉损坏或失效引起的照明异常,避免对人眼睛造成伤害,保证用光安全,包括激光光源、光源驱动模块、光源散热器、MCU控制模块、罩壳、光电传感器、弱透反射镜和投影透镜,所述激光光源和光源驱动模块均安装在光源散热器上,所述罩壳也安装在光源散热器上,所述光源散热器上还设有弱透反射镜,所述投影透镜通过透镜支架安装在光源散热器上,罩壳和投影透镜分别位于弱透反射镜两侧,所述光电传感器设在罩壳的顶部,MCU控制模块也安装在光源散热器,所述光电传感器驱动模块设在光源散热器上,光电传感器驱动模块与光电传感器电连接。(The invention relates to an automobile headlamp technology, in particular to a safe laser lamp which can detect whether a laser light source has blue light leakage in real time, and once the abnormal illumination caused by the damage or failure of fluorescent powder is detected, the damage to human eyes is avoided, and the light safety is ensured, the safe laser lamp comprises the laser light source, a light source driving module, a light source radiator, an MCU control module, a housing, a photoelectric sensor, a weak transmitting reflector and a projection lens, wherein the laser light source and the light source driving module are both arranged on the light source radiator, the housing is also arranged on the light source radiator, the weak transmitting reflector is also arranged on the light source radiator, the projection lens is arranged on the light source radiator through a lens bracket, the housing and the projection lens are respectively positioned at two sides of the weak transmitting reflector, the photoelectric sensor is arranged at the top of the housing, and the MCU control module is also arranged on the light source radiator, the photoelectric sensor driving module is arranged on the light source radiator and is electrically connected with the photoelectric sensor.)

1. A safe laser lamp, characterized in that: the device comprises a laser light source (1), a light source driving module (7), a light source radiator (2), an MCU control module (9), a cover shell (5), a photoelectric sensor (6), a weak transparent reflector (3) and a projection lens (4), wherein the laser light source (1) and the light source driving module (7) are both arranged on the light source radiator (2), the cover shell (5) is also arranged on the light source radiator (2), the light source radiator (2) is also provided with the weak transparent reflector (3), the projection lens (4) is arranged on the light source radiator (2) through a lens support, the cover shell (5) and the projection lens (4) are respectively positioned at two sides of the weak transparent reflector (3), the photoelectric sensor (6) is arranged at the top of the cover shell (5), the MCU control module (9) is also arranged on the light source radiator (2), the photoelectric sensor driving module (8) is arranged on the light source radiator (2), the photoelectric sensor driving module (8) is electrically connected with the photoelectric sensor (6), and the MCU control module (9) is electrically connected with the photoelectric sensor driving module (8) and the laser light source (1) respectively.

2. The safe laser lamp of claim 1, wherein: the weak transparent reflector (3) is made of transparent plastic materials.

3. The safe laser lamp of claim 1, wherein: an aluminum plating layer (31) is further arranged on the weak transmission reflector (3).

4. The safe laser lamp of claim 1, wherein: the transmittance of the weak transmission reflector (3) is 0.1% -5%.

5. The safe laser lamp of claim 1, wherein: the photoelectric sensors (6) are multiple and form a photoelectric sensor array.

6. The safe laser lamp of claim 1, wherein: the laser light source (1) and the light source driving module (7) are respectively in threaded connection with the light source radiator (2).

7. The safe laser lamp of claim 1, wherein: and a heat dissipation silicone layer is arranged between the laser light source (1) and the light source radiator (2).

8. The safe laser lamp of claim 1, wherein: the weak transmitting reflector (3) is a semi-transmitting semi-reflecting mirror.

Technical Field

The invention relates to the technology of automobile headlamps, in particular to a safe laser lamp.

Background

In recent years, with the increasing maturity of laser manufacturing technology, laser light sources are increasingly applied to the field of automobile lamps. Compared with an LED light source, the laser light source is small in light emitting size and high in central brightness, the size of a lamp can be reduced when the LED light source is applied to a headlamp, the illumination distance is increased, the danger degree is relatively increased, especially, a fluorescent powder layer on the light emitting surface of the light source falls off or is damaged, more blue light is directly irradiated to the front, the light energy of the short wavelength is high, irreparable damage is easily caused to human eyes, and the safety of laser illumination is affected.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a safe laser lamp, which can detect whether a laser light source has blue light leakage in real time, and once the abnormal lighting caused by the damage or the failure of fluorescent powder is detected, the damage to the eyes of people is avoided, and the light use safety is ensured.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a safe laser lamp comprises a laser light source, a light source driving module, a light source radiator, an MCU control module, a housing, a photoelectric sensor, a weak transmitting reflector and a projection lens, the laser light source and the light source driving module are both arranged on the light source radiator, the housing is also arranged on the light source radiator, the light source radiator is also provided with a weak-transmission reflector, the projection lens is arranged on the light source radiator through a lens bracket, the cover shell and the projection lens are respectively positioned at two sides of the weak transparent reflector, the photoelectric sensor is arranged at the top of the cover shell, the MCU control module is also arranged on the light source radiator, the photoelectric sensor driving module is arranged on the light source radiator, the photoelectric sensor driving module is electrically connected with the photoelectric sensor, and the MCU control module is respectively electrically connected with the photoelectric sensor driving module and the laser light source.

Preferably, the weak mirror is made of a transparent plastic material.

Preferably, an aluminum plating layer is further provided on the weak transmission reflector.

Preferably, the weak transparent reflector has a transmittance of 0.1% to 5%.

Preferably, the plurality of photosensors is a photosensor array.

Preferably, the laser light source and the light source driving module are respectively screwed with the light source radiator.

Preferably, a heat dissipation silicone layer is arranged between the laser light source and the light source heat sink.

Preferably, the weak transmission reflector is a half transmission and half reflection reflector.

The invention achieves the following beneficial effects: the safe laser lamp can monitor the laser blue light leakage state in real time, and can timely turn off a laser light source or perform other safe processing when detecting that the laser generates the blue light leakage, so that the real-time safe detection is realized, and the harm to human eyes caused by the laser leakage is avoided.

Drawings

FIG. 1 is a schematic structural view of a safety laser lamp of the present invention;

fig. 2 is a control logic diagram of the method for monitoring the blue light leakage state of the safe laser lamp according to the present invention.

Description of the drawings: the device comprises a laser light source 1, a light source radiator 2, a weak transmission reflector 3, an aluminum plated layer 31, a projection lens 4, a housing 5, a left chamber 51, a right chamber 52, a photoelectric sensor 6, a light source driving module 7, a photoelectric sensor driving module 8 and an MCU control module 9.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

A safe laser lamp comprises a laser light source 1, a light source driving module 7, a light source radiator 2, an MCU control module 9, a housing 5, a photoelectric sensor 6, a weak transmitting reflector 3 and a projection lens 4, the laser light source 1 and the light source driving module 7 are both arranged on the light source radiator 2, the housing 5 is also arranged on the light source radiator 2, the light source radiator 2 is also provided with a weak-transmission reflector 3, the projection lens 4 is arranged on the light source radiator 2 through a lens bracket, the housing 5 and the projection lens 4 are respectively positioned at two sides of the weak transparent reflector 3, the photoelectric sensor 6 is arranged at the top of the housing 5, the MCU control module 9 is also arranged on the light source radiator 2, the photoelectric sensor driving module 8 is arranged on the light source radiator 2, the photoelectric sensor driving module 8 is electrically connected with the photoelectric sensor 6, and the MCU control module 9 is respectively electrically connected with the photoelectric sensor driving module 8 and the laser light source 1; the weak transmission reflector 3 is made of transparent plastic materials; an aluminum coating layer 31 is also arranged on the weak transmission reflector 3; the transmittance of the weak transmission reflector 3 is 0.1% -5%; the photoelectric sensors 6 are multiple and form a photoelectric sensor array; the laser light source 1 and the light source driving module 7 are respectively in threaded connection with the light source radiator 2; and a heat dissipation silicone grease layer is arranged between the laser light source 1 and the light source radiator 2.

Fig. 1 shows an embodiment of a structural schematic diagram of a laser lamp device according to the present invention, where the photosensor 6 receives optical information and converts the optical information into an electrical signal, the light source driving module 7 is configured to drive and light the laser light source 1, the photosensor driving module 8 is configured to drive the photosensor 6 to operate, the MCU control module 9 may receive a feedback value of the photosensor 6 and set a normal value range, and when the feedback value exceeds the normal value range, it is determined that there is blue light leakage in the laser light source 1. The laser light source 1 is arranged on the upper part of the light source radiator 2, the light source driving module 7 is also arranged on the light source radiator 2 and is positioned beside the laser light source 1 and is electrically connected with the laser light source 1, the weak-transmission reflector 3 is arranged on the light source radiator 2, the light of the laser light source 1 can pass through the weak-transmission reflector 3, the photoelectric sensor 6 and the photoelectric sensor driving module 8 are both arranged on the cover 5 positioned above the weak reflecting mirror 3, the weak reflecting mirror 3 is connected with the casing 5 and encloses a closed space to form a left chamber 51 and a right chamber 52, the photoelectric sensor 6 is electrically connected with the photoelectric sensor driving module 8, the MCU control module 9 is arranged on the laser light source radiator 2 and is positioned beside the weak transmitting reflector 3, the MCU control module 9 is respectively and electrically connected with the photoelectric sensor driving module 8 and the laser light source driving module 7; the weak transmission reflector 3 is made of transparent plastic materials; the aluminum coating layer arranged on the weak transmission reflector 3 can divide a beam of light into two beams, part of the light passes through the weak transmission reflector 3, and the other part of the light is reflected to the projection lens 4 and projected to a far place to achieve the purpose of illumination; the projection lens 4 is clamped with the two brackets of the weak transparent reflector 3, and the transmissivity of the weak transparent reflector 3 is 0.1-5%; the photoelectric sensors 6 are multiple and form a photoelectric sensor array, the photoelectric sensors are uniformly arranged behind the weak-transmission reflecting mirror 3, and according to output values of the photoelectric sensors, whether the abnormal state of the laser light source is caused by fluorescent powder breakage or light attenuation along with use time can be distinguished.

In specific implementation, the laser light source 1 and the light source driving module 7 are electrically connected and are connected with the laser light source radiator 2 in a screw locking mode, heat dissipation silicone grease is coated between the laser light source 1 and the light source radiator 2, the weak transparent reflector 3 is also plated with aluminum on the surface of one side close to the laser light source, the transmittance is about 1%, the transmitted light energy can be ensured within the range of the photoelectric sensor 6, the photoelectric sensor 6 is arranged on the other side of the weak transparent reflector 3, namely the housing 5, and the connection mode is screw locking.

FIG. 2 is a logic diagram of the method for monitoring the operation status of the vehicular lamp according to the present invention, wherein the light source driver 7 is a constant current driving device, which drives the laser light source 1 to light up, and projects light to the weak reflecting mirror 3, and then the light is divided into two beams by the weak reflecting mirror 3, one beam of reflected light is projected to the projecting lens 4 to achieve the illumination effect, and the other beam of light is projected to the photoelectric sensor 6 on the housing 5 after passing through the weak reflecting mirror 3, and the photoelectric sensor 6 has two or more than two, and is attached to different positions on the back side of the housing 5 to obtain a plurality of feedback voltage values, which are transmitted to the MCU control module 9 to compare with the respective normal voltage threshold value ranges and compare the respective voltage value variation trends, if the feedback voltage values are within the normal range, it is indicated that the laser light source 1 is operating normally, and if the voltage values are not within the normal range, the feedback voltage variation trends and amplitudes of the sensors are irregular, the blue light leakage of the laser light source 1 is indicated, the MCU control module 9 is used for controlling the on-off of the laser light source, and the photoelectric sensor driving module 8 is driven by the photoelectric sensor 6 to work.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.