阅读说明：本技术 防激光泄露的发光器件 (Light emitting device for preventing laser leakage ) 是由 陈威 樊嘉杰 祁高进 杨卫桥 阮军 于 2020-07-23 设计创作，主要内容包括：本发明提供了一种防激光泄露的发光器件,包括：壳体以及设置在壳体内的半导体激光管、透镜、荧光材料、位移传感器和控制模块,荧光材料设置在半导体激光管的激光发射方向上；透镜位于荧光材料和半导体激光管的之间,透镜用于对半导体激光管发射的蓝光进行整形,荧光材料用于将整形后的蓝光转换为黄绿光；位移传感器设置在荧光材料上,用于采集荧光材料的位移信息,并生成位移信号；控制模块的一端与半导体激光管的第一和第二引脚相连,另一端与壳体上设置的第一和第二电源引脚相连,其中,控制模块用于根据位移信号判断荧光材料是否发生断裂,在未发生断裂时,控制对半导体激光管供电,在发生断裂时,控制停止对半导体激光管供电。(The invention provides a laser leakage prevention light emitting device, which comprises: the displacement sensor comprises a shell, a semiconductor laser tube, a lens, a fluorescent material, a displacement sensor and a control module, wherein the semiconductor laser tube, the lens, the fluorescent material, the displacement sensor and the control module are arranged in the shell; the lens is positioned between the fluorescent material and the semiconductor laser tube, the lens is used for shaping the blue light emitted by the semiconductor laser tube, and the fluorescent material is used for converting the shaped blue light into yellow-green light; the displacement sensor is arranged on the fluorescent material and used for collecting displacement information of the fluorescent material and generating a displacement signal; one end of the control module is connected with the first pin and the second pin of the semiconductor laser tube, the other end of the control module is connected with the first power pin and the second power pin which are arranged on the shell, wherein the control module is used for judging whether the fluorescent material is fractured or not according to the displacement signal, controlling the power supply to the semiconductor laser tube when the fluorescent material is not fractured, and controlling the power supply to the semiconductor laser tube to stop when the fluorescent material is fractured.)

1. A light emitting device that prevents laser leakage, comprising: a shell, a semiconductor laser tube, a lens, a fluorescent material, a displacement sensor and a control module which are arranged in the shell, wherein,

the semiconductor laser tube is used for emitting blue light;

the fluorescent material is arranged in the laser emission direction of the semiconductor laser tube;

the lens is positioned between the fluorescent material and the semiconductor laser tube, wherein the lens is used for shaping the blue light, the fluorescent material is used for converting the shaped blue light into yellow-green light, and the yellow-green light and the blue light are mixed to form white light which is radiated outwards;

the displacement sensor is arranged on the fluorescent material and used for collecting displacement information of the fluorescent material and generating a displacement signal;

one end of the control module is connected with the first pin and the second pin of the semiconductor laser tube, the other end of the control module is respectively connected with the first power pin and the second power pin which are arranged on the shell through the anode power lead and the cathode power lead, wherein the control module is used for judging whether the fluorescent material is fractured or not according to the displacement signal, controlling the power supply to supply power to the semiconductor laser tube when judging that the fluorescent material is not fractured, and controlling the power supply to stop supplying power to the semiconductor laser tube when judging that the fluorescent material is fractured.

2. The light emitting device of claim 1, wherein the displacement sensor is connected to the control module by a wire.

3. The light-emitting device according to claim 1, wherein the displacement sensor is a precision displacement sensor.

4. The light-emitting device according to claim 3, wherein the control module is specifically configured to amplify the displacement signal and determine whether the fluorescent material is broken according to the amplified displacement signal.

5. The light-emitting device according to claim 4, wherein the control module is specifically configured to compare the amplified displacement signal with a displacement signal of the fluorescent material when the fluorescent material is not broken, and determine whether the fluorescent material is broken according to a comparison result.

6. A light emitting device according to any of claims 1-5, characterized in that the light emitting device is a semiconductor laser.

Technical Field

The invention relates to the technical field of light-emitting devices, in particular to a light-emitting device capable of preventing laser leakage.

Background

At present, laser light sources are widely applied in various fields of industrial and agricultural production and science and technology, wherein a lot of lasers are synthesized by exciting fluorescent materials through blue light. However, in the actual use process, the leakage of blue light is inevitable, and the blue light can cause permanent damage to human eyes. Therefore, how to detect whether the laser leaks is very important.

Disclosure of Invention

The invention aims to solve the technical problems and provides a laser leakage prevention light emitting device, which can accurately judge whether a fluorescent material is broken or not in real time through a displacement sensor, so that whether laser leakage occurs or not can be accurately judged in real time, and meanwhile, an optical sensor is not required for judgment, so that the situation of laser energy loss can be effectively avoided.

The technical scheme adopted by the invention is as follows:

the light emitting device for preventing laser leakage includes: the device comprises a shell, a semiconductor laser tube, a lens, a fluorescent material, a displacement sensor and a control module, wherein the semiconductor laser tube, the lens, the fluorescent material, the displacement sensor and the control module are arranged in the shell; the fluorescent material is arranged in the laser emission direction of the semiconductor laser tube; the lens is positioned between the fluorescent material and the semiconductor laser tube, wherein the lens is used for shaping the blue light, the fluorescent material is used for converting the shaped blue light into yellow-green light, and the yellow-green light and the blue light are mixed to form white light which is radiated outwards; the displacement sensor is arranged on the fluorescent material and used for collecting displacement information of the fluorescent material and generating a displacement signal; one end of the control module is connected with the first pin and the second pin of the semiconductor laser tube, the other end of the control module is respectively connected with the first power pin and the second power pin which are arranged on the shell through the anode power lead and the cathode power lead, wherein the control module is used for judging whether the fluorescent material is fractured or not according to the displacement signal, controlling the power supply to supply power to the semiconductor laser tube when judging that the fluorescent material is not fractured, and controlling the power supply to stop supplying power to the semiconductor laser tube when judging that the fluorescent material is fractured.

And the displacement sensor is connected with the control module through a lead.

The displacement sensor is a precision displacement sensor.

The control module is specifically configured to amplify the displacement signal and determine whether the fluorescent material is fractured according to the amplified displacement signal.

The control module is specifically configured to compare the amplified displacement signal with a displacement signal of the fluorescent material when the fluorescent material is not fractured, and determine whether the fluorescent material is fractured according to a comparison result.

The light emitting device is a semiconductor laser.

The invention has the beneficial effects that:

according to the invention, whether the fluorescent material is broken can be accurately judged in real time through the displacement sensor, so that whether laser leakage occurs can be accurately judged in real time, and meanwhile, an optical sensor is not required for judgment, so that the laser energy loss can be effectively avoided.

Drawings

Fig. 1 is a schematic structural view of a laser leakage prevention light emitting device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a laser leakage prevention light emitting device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural view of a laser leakage prevention light emitting device according to an embodiment of the present invention. Among them, the light emitting device may be a semiconductor laser.

As shown in fig. 1, the light emitting device for preventing laser leakage according to an embodiment of the present invention may include: a housing 100, and a semiconductor laser tube 200, a lens 300, a fluorescent material 400, a displacement sensor 500, and a control module 600 disposed within the housing 100.

The housing 100 is used for protecting and fixing internal components; the semiconductor laser tube 200 is used for emitting blue light; the fluorescent material 400 is disposed in the laser emission direction of the semiconductor laser tube 200; the lens 300 is located between the fluorescent material 400 and the semiconductor laser tube 200, wherein the lens 300 is used for shaping the blue light, the fluorescent material 400 is used for converting the shaped blue light into yellow-green light, and the yellow-green light and the blue light are mixed to form white light which is radiated outwards; the displacement sensor 500 is arranged on the fluorescent material 400 and used for collecting displacement information of the fluorescent material 400 and generating a displacement signal; one end of the control module 600 is connected to the first pin a and the second pin b of the semiconductor laser tube 200, and the other end of the control module 600 is connected to the first power pin c and the second power pin d provided on the housing 100 through the positive power lead 610 and the negative power lead 620, respectively, wherein the control module 600 is configured to determine whether the fluorescent material 400 is broken according to the displacement signal, and control the power supply to supply power to the semiconductor laser tube 200 when it is determined that the fluorescent material 400 is not broken, and control the power supply to stop supplying power to the semiconductor laser tube when it is determined that the fluorescent material 400 is broken.

According to one embodiment of the present invention, the displacement sensor 500 may be a precision displacement sensor.

Specifically, when the semiconductor laser tube 200 emits laser blue light, the light beam emitted from the semiconductor laser tube 200 may be shaped by the lens 300, and then the shaped blue light may be converted into yellow-green light by the fluorescent material 400, wherein the yellow-green light converted by the fluorescent material 400 may be mixed with the remaining blue light to form white light and be radiated to the outside, so that the light emitting device may emit white light to the outside.

In the practical application process, after the laser blue light with high energy density is dispersed by the fluorescent material, the energy density is reduced, and no dangerous condition is caused. However, when the fluorescent material is broken, the laser blue light cannot be dispersed any more, and the laser blue light with high energy density is directly emitted, which causes great damage to people or animals.

For this reason, in the embodiment of the present invention, the displacement sensor 500 is disposed on the fluorescent material 400 to collect displacement information of the fluorescent material 400 in real time, generate a displacement signal, and determine whether the fluorescent material 400 is broken according to the displacement signal through the control module 600.

It can be understood that, at the moment of fracture, the brittle material has its internal structure changed accordingly, which causes the internal stress of the material to be redistributed suddenly, so that the mechanical energy is converted into acoustic energy, and an elastic wave is generated.

Therefore, the control module 600 can compare the received displacement signal with the displacement signal of the fluorescent material 400 that is not broken to determine whether the fluorescent material 400 is broken. Specifically, when the displacement signal received by the control module 600 matches the displacement signal when the fluorescent material 400 is not fractured, for example, the frequency and amplitude of the displacement signal received by the control module 600 and the frequency and amplitude of the displacement signal when the fluorescent material 400 is not fractured are less at each moment, it can be determined that the fluorescent material 400 is not fractured, and at this time, it can be determined that laser leakage is not occurring, and therefore, the power supply can be controlled to normally supply power to the semiconductor laser tube 200; when the displacement signal received by the control module 600 is not matched with the displacement signal when the fluorescent material 400 is not broken, for example, in a certain time period, the frequency or amplitude of the displacement signal received by the control module 600 is significantly large, it can be determined that the fluorescent material 400 is broken, and at this time, it can be determined that laser leakage occurs, so that the power supply can be controlled to stop supplying power to the semiconductor laser tube 200.

Therefore, whether the fluorescent material is broken or not can be accurately judged in real time through the displacement sensor, whether laser leakage occurs or not can be accurately judged in real time, meanwhile, an optical sensor is not needed to be adopted for judging, and therefore the situation of laser energy loss can be effectively avoided.

According to one embodiment of the present invention, as shown in FIG. 2, the displacement sensor 500 may be connected to the control module 600 via a wire 700.

As a possible implementation, the displacement sensor 500 may transmit the displacement signal to the control module 600 through a wire when generating the displacement signal; as another possible implementation, the displacement sensor 500 may also wirelessly transmit the displacement signal directly to the control module 600 when generating the displacement signal.

Based on the above embodiment, in order to determine whether the fluorescent material is broken or not more accurately according to the displacement signal, the displacement signal may be processed accordingly, so as to determine according to the processed displacement signal.

Correspondingly, according to an embodiment of the present invention, the control module 600 is specifically configured to amplify the displacement signal and determine whether the fluorescent material is broken according to the amplified displacement signal.

According to an embodiment of the present invention, the control module 600 is specifically configured to compare the amplified displacement signal with a displacement signal of the fluorescent material when the fluorescent material is not broken, and determine whether the fluorescent material is broken according to a comparison result.

Specifically, after receiving the displacement signal generated by the displacement sensor 500, the control module 600 may amplify the displacement signal, and then compare the amplified displacement signal with the displacement signal when the fluorescent material is not broken, so as to determine whether the fluorescent material 400 is broken. Specifically, when the amplified displacement signal matches the displacement signal when the fluorescent material 400 is not fractured, for example, the frequency deviation between the amplified displacement signal and the displacement signal when the fluorescent material 400 is not fractured is small at each time, it can be determined that the fluorescent material 400 is not fractured, and at this time, it can be determined that laser leakage is not occurring, and therefore, the power supply can be controlled to normally supply power to the semiconductor laser tube 200; when the amplified displacement signal is not matched with the displacement signal when the fluorescent material 400 is not broken, for example, the frequency or amplitude of the amplified displacement signal is significantly large in a certain period of time, it can be determined that the fluorescent material 400 is broken, and at this time, it can be determined that laser leakage has occurred, and thus, the power supply can be controlled to stop supplying power to the semiconductor laser tube 200.

In summary, according to the light emitting device for preventing laser leakage of the embodiment of the present invention, a semiconductor laser tube emits blue light, a lens shapes the blue light, and a fluorescent material converts the shaped blue light into yellow-green light, wherein the yellow-green light and the blue light are mixed to form white light that radiates outward, displacement information of the fluorescent material is collected by a displacement sensor disposed on the fluorescent material, and a displacement signal is generated, and a control module determines whether the fluorescent material is broken according to the displacement signal, controls a power supply to supply power to the semiconductor laser tube when it is determined that the fluorescent material is not broken, and controls the power supply to stop supplying power to the semiconductor laser tube when it is determined that the fluorescent material is broken.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The meaning of "plurality" is two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.