Optical transmission module, gas telemetry device and method of assembling

Abstract

The application provides a light emitting module, a gas remote sensing device and an assembling method, the gas remote sensing device can emit detection light, comprising a main body, a light emitting module and a light receiving module, wherein the light emitting module is arranged on the main body and can emit outgoing light, and the light receiving module is arranged on the main body and can receive reflected light of the detection light. The light emitting module comprises a light emitting part, a heat dissipation part and an adjusting part, wherein one end of the light emitting part has a base, the heat dissipation part is arranged around the outside of the light emitting part, the adjusting part is connected with the heat dissipation part and is arranged around the one end of the light emitting part with the base, and is used for adjusting the angle of the light emitting module. The gas remote sensing device of the application utilizes the adjusting part and the heat dissipation part in the light emitting module to respectively transfer heat to the outside of the light emitting module, and conducts the heat through the main body of the gas remote sensing device, so as to finally realize heat dissipation of the gas remote sensing device, effectively reduce the overheating risk of the gas remote sensing device, and improve the outgoing light power.

Description

Technical Field

[0001] This invention relates to the field of optical telemetry, and in particular to a light emission module, a gas telemetry device, and a method for assembling and adjusting the gas telemetry device. Background Technology

[0002] Gas telemetry equipment refers to devices that utilize the propagation characteristics of light to acquire corresponding measurement data, such as distance measurement and gas concentration measurement, and has wide applications in many fields. The light emitting module in a gas telemetry device emits a light beam for measurement. During operation, especially during prolonged operation or when emitting high-energy beams, the light emitting module generates a large amount of heat, directly affecting the performance of the gas telemetry equipment. The working principle of a gas telemetry device is to use collimated light to illuminate a specific space and receive the reflected light. Then, through backend processing of the optical characteristics of the reflected light, such as reception time and spectrum, the physical indicators of the gas to be detected in the gas space are obtained, such as gas concentration and type.

[0003] Taking commonly used laser gas telemetry equipment as an example, butterfly lasers with higher encapsulation are typically chosen as the optical emission module, such as... Figure 1 As shown, a butterfly laser couples the emitted light into an optical fiber, from which the beam is emitted from the other end of the fiber. However, due to the fiber coupling, the butterfly laser suffers significant power loss, resulting in a severe reduction in emitted light power. Furthermore, the butterfly laser is relatively large and requires a circuit board for support, making the overall device structure more complex and leading to high production costs. This hinders the miniaturization of gas telemetry equipment. Additionally, the heat dissipation structure is typically placed at the bottom of the laser, resulting in a single and uneven heat dissipation direction, which prevents rapid heat dissipation and fails to meet the heat dissipation requirements of gas telemetry equipment using higher-power lasers.

[0004] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Summary of the Invention

[0005] To address one or more deficiencies in the prior art, this invention provides an optical emission module that can improve the output optical power while ensuring heat dissipation efficiency, and meets the technical specifications and reliability requirements for use in gas telemetry equipment. It also provides a foundation for the miniaturization of gas telemetry equipment.

[0006] The present invention also includes a gas telemetry device that utilizes the aforementioned light emission module to reduce the risk of overheating while increasing the emitted light power.

[0007] The purpose of this invention is to provide a light emitting module that can overcome one or more defects in the prior art.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] An optical emitting module, comprising:

[0010] A light emitting part, one end of which has a base;

[0011] A heat dissipation section is disposed around the outside of the light emitting section; and

[0012] An adjustment section is connected to the heat dissipation section and is disposed around one end of the light emitting section having a base. The adjustment section is configured to adjust the angle of the light emitting module.

[0013] According to one aspect of the present invention, the light emitting module further includes a shaping lens group, the heat dissipation part has a circumferential outer wall, the shaping lens group is wholly or partially disposed within the outer wall of the heat dissipation part, and the shaping lens group is configured to collimate the emitted light from the light emitting part.

[0014] According to one aspect of the present invention, the light emitting module further includes a fixing part disposed at one end of the light emitting part having a base and fixedly connected to the adjusting part, the adjusting part being aligned with the bottom surface of the base.

[0015] According to one aspect of the present invention, the light emitting module further includes an adjustment section having a protrusion protruding from the heat dissipation section, the protrusion having an adjustment hole for changing the direction of the emitted light from the light emitting module.

[0016] According to one aspect of the invention, the mounting and adjusting portion is located at one end of the heat dissipation portion near the shaping lens assembly.

[0017] According to one aspect of the invention, the heat dissipation part and the adjustment part are integrally formed from a metal material.

[0018] According to one aspect of the invention, the heat from the light emitting part is transferred to the outside and / or the heat dissipation part by the adjustment part.

[0019] A gas telemetry device capable of emitting detection light, the gas telemetry device comprising:

[0020] main body;

[0021] A light emitting module, which is disposed on the main body and is capable of emitting outgoing light; and

[0022] An optical receiving module is disposed on the main body and configured to receive reflected light from the detection light;

[0023] The light emitting module includes:

[0024] A light emitting part, one end of which has a base;

[0025] A heat dissipation section is disposed around the outside of the light emitting section; and

[0026] An adjustment section is connected to the heat dissipation section and is disposed around one end of the light emitting section having a base. The adjustment section is also connected to the main body and is configured to adjust the angle of the light emitting module.

[0027] According to one aspect of the present invention, the light emitting module further includes a shaping lens group, the heat dissipation part has a circumferential outer wall, the shaping lens group is wholly or partially disposed within the outer wall of the heat dissipation part, and the shaping lens group is configured to collimate the emitted light from the light emitting part.

[0028] According to one aspect of the present invention, the light emitting module further includes an adjustment section having a protrusion protruding from the heat dissipation section and an adjustment hole thereon for changing the direction of the emitted light from the light emitting module.

[0029] According to one aspect of the invention, the main body has a mounting portion, the adjusting portion is interference-fitted with the mounting portion, and the heat of the light emitting portion is transferred to the mounting portion via the adjusting portion.

[0030] According to one aspect of the present invention, the gas telemetry device further includes an optical reference module disposed on the main body, the optical reference module comprising:

[0031] A reference gas chamber is disposed on the main body and filled with a reference gas.

[0032] A beam splitting unit is configured to split the emitted light from the light emitting module into a detection light and a reference light, and to direct the reference light toward the reference gas cell.

[0033] A receiving unit configured to receive reference light passing through a reference gas cell; and

[0034] A control unit configured to control the emitted light emitted by the optical emitting module based on the reference light received by the receiving unit.

[0035] A receiving control device is configured to receive reference light passing through a reference gas cell and to control the light emitting module to emit outgoing light.

[0036] According to one aspect of the invention, the reference chamber is fixedly connected to or integrally formed with the mounting portion.

[0037] According to one aspect of the present invention, the gas telemetry device further includes an indicator light emitting unit disposed on the main body, wherein the optical axis of the light emitted by the indicator light emitting unit is parallel to the optical axis of the detection light.

[0038] According to one aspect of the present invention, the light receiving module includes a receiving lens, a photodetector, and a data acquisition unit. The receiving lens is disposed on the main body and configured to receive reflected light from the detection light. The photodetector is disposed downstream of the optical path of the receiving lens to receive the reflected light and is configured to convert the optical signal into an electrical signal. The data acquisition unit is configured to acquire the electrical signal.

[0039] A method for assembling and adjusting a gas telemetry device as described above, the method comprising:

[0040] The direction of the light emitting module is adjusted by the adjustment section and the mounting section so that the angle of the light emitted by the light emitting module matches the receiving angle of the light receiving module and the receiving unit, respectively.

[0041] Compared with the prior art, the present invention provides an embodiment of a gas telemetry device. It utilizes the adjustment section and heat dissipation section in the optical emitting module to transfer heat to the outside of the optical emitting module, and then conducts the heat through the main body of the gas telemetry device, improving heat dissipation efficiency and making heat dissipation more uniform. This effectively avoids overheating problems in the gas telemetry device, while also increasing the emitted light power, ensuring normal operation of the gas telemetry device. Furthermore, the optical emitting module is smaller, making the gas telemetry device more compact and convenient. It also improves the emitted light power of the optical emitting module, simplifies the internal structure of the optical emitting module by externally adjusting its arrangement, and simplifies the manufacturing process, reducing costs and facilitating adjustment of the emitted light angle. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0043] Figure 1 This is a schematic diagram of an existing laser gas telemetry device;

[0044] Figure 2 This is a schematic diagram of the structure of the optical emitting module in one embodiment of the present invention;

[0045] Figure 3 This is an axial cross-sectional view of the light emitting module in one embodiment of the present invention;

[0046] Figure 4AThis is a schematic diagram of the structure of a gas telemetry device in one embodiment of the present invention. Figure 1 ;

[0047] Figure 4B This is a schematic diagram of the structure of a gas telemetry device in one embodiment of the present invention. Figure 2 ;

[0048] Figure 4C This is an exploded view of a gas telemetry device in one embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the optical path of a gas telemetry device in one embodiment of the present invention;

[0050] Figure 6 This is an optical path block diagram of a gas telemetry device in one embodiment of the present invention.

[0051] Reference numerals: 1. Light emitting module; 10. Light emitting part; 11. Base; 20. Heat dissipation part; 30. Adjustment part; 40. Shaping lens group; 50. Fixing part; 60. Assembly and adjustment part; 61. Adjustment hole; 100. Gas telemetry device; 110. Main body; 111. Mounting part; 120. Light receiving module; 121. Receiving lens; 122. Photodetector; 123. Receiving circuit board; 130. Light reference module; 131. Reference gas chamber; 132. Beam splitting unit; 133. Receiving unit; 134. Control unit; 140. Indicator light emitter; L1. Outgoing light; L2. Detection light; L3. Reference light. Detailed Implementation

[0052] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0057] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0058] According to a preferred embodiment of the present invention, the light emitting module 1 includes a light emitting part 10, a heat dissipation part 20, and an adjustment part 30. One end of the light emitting part 10 has a base 11. The heat dissipation part 20 is disposed around the outside of the light emitting part 10. The adjustment part 30 is connected to the heat dissipation part 20 and is disposed around the end of the light emitting part 10 with the base 11. The adjustment part 30 is configured to adjust the angle of the light emitting module 1. In a specific embodiment, the light emitting module 1 mainly transfers heat outward through the adjustment part 30. The heat dissipation part 20, as an auxiliary heat dissipation structure, dissipates heat through multiple paths, improving heat dissipation efficiency and making heat dissipation more uniform, effectively avoiding overheating problems. Furthermore, the light emitting module 1 can directly serve as an emitted light source, reducing light power loss.

[0059] Figure 2 The structure of the light emitting module 1 according to one embodiment of the invention is shown. Figure 3 A cross-sectional view of the light-emitting module 1 is shown. The light-emitting module 1 can be used in gas telemetry equipment. The following section combines... Figure 2 and Figure 3 Detailed description.

[0060] like Figure 3As shown, the light emitting module 1 includes a light emitting section 10, a heat dissipation section 20, and an adjustment section 30. One end of the light emitting section 10 has a base 11. The light emitting section 10 is a device that directly emits light. Depending on different usage requirements and environments, different types or packaging methods of lasers can be selected, such as TO lasers. TO lasers have a simple structure and advantages such as high power and small size. The base 11 cooperates with the adjustment section 30 and the fixing section 50. The base 11 is located at one end of the light emitting section 10 and can be made to protrude from other parts of the light emitting section 10, for example, as a flange. The adjustment section 30 has a groove that mates with the base 11, fitting and fixing it to the side of the base 11, for example, by adhesive or by a flange and bolts. The base 11 can also be used to seal the light emitting section 10 to protect its components and fix the power leads of the light emitting section 10.

[0061] like Figure 3 As shown, the heat dissipation part 20 is arranged around the outside of the light emitting part 10. The heat dissipation part 20 can be directly attached to the outside of the light emitting part 10, or according to the preferred embodiment of the present invention, the heat dissipation part 20 and the outside of the light emitting part 10 are not completely attached, but have a certain distance, to prevent the difference in thermal expansion coefficients between the heat dissipation part 20 and the light emitting part 10 from affecting the stability of the internal structure. In conventional light emitters, a heat sink is usually set at the bottom of the base for heat dissipation. In this embodiment, the position of the heat dissipation part 20 does not need to be set on the base 11. According to the heat dissipation analysis of the light emitting module 1 in the embodiment of the present invention, taking a TO packaged laser as an example, when the light emitting module 1 starts to operate, the heat generation is mainly concentrated near the base 11 of the light emitting part 10, and is transferred outward through the adjustment part 30. Most of the heat is directly transferred to the main body of the gas telemetry device, and a small part of the heat is transferred to the heat dissipation part 20 through the adjustment part 30, or through other positions of the light emitting part 10, and then dissipated into the external environment through the heat dissipation part 20.

[0062] In embodiments of the present invention, the adjustment part 30 is arranged around the base 11 of the light emitting part 10. When the light emitting part 10 is working, the heat concentrated at the base 11 is mainly dissipated by the adjustment part 30. To improve heat transfer efficiency and uniform heat dissipation, in some preferred embodiments of the present invention, both the adjustment part 30 and the heat dissipation part 20 are made of metal and are integrally formed. The adjustment part 30 and the heat dissipation part 20 can also be made of different materials. For example, the heat dissipation part 20 can be made of a material with good thermal conductivity to improve heat dissipation efficiency. The adjustment part 30 not only undertakes the heat dissipation function, but is also used to adjust the angle of the light emitting module 1. It can be made of a material with good thermal conductivity and high hardness so that heat can be quickly transferred to the heat dissipation part 20. The heat dissipation part 20 and the adjustment part 30 simultaneously dissipate heat to the outside of the light emitting module 1, and ensure structural stability when adjusting the light emitting module 1. In specific gas telemetry devices, the adjustment part 30 can be designed to be close to or attached to the heat-conducting structure or outer wall of the gas telemetry device, thereby conducting heat to the main body of the gas telemetry device and accelerating heat dissipation.

[0063] According to some preferred embodiments of the present invention, in order to facilitate the adjustment of the angle of the emitted light from the light emitting module 1, the heat dissipation part 20 is not directly attached to the gas telemetry device. The specific arrangement and adjustment method are described in detail in the following embodiments.

[0064] The adjustment part 30 is connected to the heat dissipation part 20. In some preferred embodiments of the present invention, the adjustment part 30 and the heat dissipation part 20 are integrally formed. The adjustment part 30 can be used to adjust the installation angle of the light emitting module 1. The adjustment part 30 is arranged around the end of the light emitting part 10 that has a base 11. The adjustment part 30 cooperates with the base 11. After the light emitting module 1 is installed in the gas telemetry device, the installation angle of the light emitting module 1 can be changed by controlling and adjusting the adjustment part 30, thereby correcting the angle of the detection light emitted by the gas telemetry device.

[0065] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the light emitting module 1 also includes a shaping lens group 40, which is disposed downstream of the light emitting section 10. The shaping lens group 40 includes one or more lenses, whose function is to collimate the emitted light from the light emitting section 10. To fix the relative position of the shaping lens group 40 and the light emitting section 10 and ensure collimation, in this embodiment, all or part of the lenses in the shaping lens group 40 are disposed within the outer wall of the heat dissipation section 20, for example... Figure 3The diagram illustrates a shaping lens assembly 40 comprising two lenses. One lens is positioned near the light emitting section 10, and the other lens is located at the opposite end of the heat dissipation section 20 to the light emitting section 10. The shaping lens assembly 40 is fixed by the heat dissipation section 20, ensuring that the collimation effect of the shaping lens assembly 40 is not affected even if the position and angle of the light emitting section 10 are changed. According to another embodiment of the invention, the shaping lens assembly 40 may include multiple lenses, some of which may be positioned outside the heat dissipation section 20 and fixed by a structure within the gas telemetry device. Collimation is achieved by adjusting the positional relationship between the light emitting section 10 and the gas telemetry device.

[0066] Traditional gas telemetry equipment typically uses a butterfly-packaged laser as the light emitter. This butterfly-packaged laser integrates optical fibers, and after a collimator is placed at the laser's emission position, it can serve as the light emission module for the gas telemetry equipment. However, because the butterfly-packaged laser is coupled with optical fibers, the optical efficiency drops significantly, and the butterfly-packaged laser occupies a large space, which is not conducive to reducing the size of the optical telemetry equipment. In some embodiments of this invention, the shaping lens group 40 is directly disposed in the heat dissipation unit 20, eliminating the need for optical fibers. This significantly improves the light emission efficiency, reduces the space required, and simplifies the manufacturing process.

[0067] like Figure 2 and Figure 3 As shown, according to a preferred embodiment of the present invention, the light emitting module 1 further includes a fixing part 50, which is disposed at one end of the light emitting part 10 having a base 11. The adjusting part 30 is flush with the bottom surface of the base 11. When adjusting the light emitting module 1, the light emitting part 10 and the adjusting part 30 move synchronously, improving the accuracy of the adjustment. The fixing part 50 and the adjusting part 30 are fixedly connected. In order to reduce the size of conventional light emitting parts 10, the base 11 is usually small, resulting in a small mating surface with the adjusting part 30. Even if the base 11 and the adjusting part 30 are fixedly connected, the light emitting part 10 may still rotate or fall off relative to the adjusting part 30. Therefore, in this embodiment, a fixing part 50 is provided at one end of the base 11, and the fixing part 50 is fixedly connected to the adjusting part 30 to ensure the overall structural stability of the light emitting module 1. Specifically, the fixing part 50 and the adjusting part 30 can be fixedly connected by bolts and pre-drilled threaded holes, or by interference fit, adhesive fixation, or snap-fit.

[0068] like Figure 3As shown, according to a preferred embodiment of the present invention, the light emitting module 1 further includes an adjustment part 60, which is disposed on the outside of the heat dissipation part 20 and has a protrusion protruding from the heat dissipation part 20. An adjustment hole 61 is machined on the protrusion, and the function of the adjustment hole 61 is to adjust the direction of the emitted light from the light emitting module 1. The adjustment part 60 is disposed on the outside of the heat dissipation part 20. After the light emitting module 1 is installed in the gas telemetry device, the adjustment part 30 is fixed to the main body of the gas telemetry device. By adjusting the adjustment part 30 and the adjustment part 60, the position and direction of the emitted light from the light emitting module 1 can be adjusted from multiple directions and angles to ensure the accuracy of the detection light transmission direction. Specific adjustment methods are described in detail in subsequent embodiments. According to some preferred embodiments of the present invention, such as... Figure 3 As shown, the adjustment section 60 is located at one end of the heat dissipation section 20 near the shaping lens group 40, that is, the adjustment section 60 is far away from the adjustment section 30, so that the adjustment can be performed synchronously from both ends of the light emitting module 1, thereby improving the adjustment accuracy of the light emitting module 1.

[0069] According to an embodiment of the gas telemetry device 100 of the present invention, the gas telemetry device 100 is capable of emitting detection light. The gas telemetry device 100 includes a main body 110, a light emitting module 1, and a light receiving module 120. The light emitting module 1 is disposed on the main body 110 and is capable of emitting outgoing light. A portion of the outgoing light serves as the detection light of the gas telemetry device 100. The light receiving module 120 is disposed on the main body 110 and is capable of receiving reflected light from the detection light. The light emitting module 1 includes a light emitting part 10, a heat dissipation part 20, and an adjustment part 30. One end of the light emitting part 10 has a base 11. The heat dissipation part 20 is disposed around the outside of the light emitting part 10. The adjustment part 30 is connected to the heat dissipation part 20 and is disposed around the end of the light emitting part 10 with the base 11. The adjustment part 30 is also connected to the main body 110 and is capable of adjusting the angle of the light emitting module 1.

[0070] Figures 4A-4C The following diagram illustrates the specific structure of a gas telemetry device 100 in one embodiment of the present invention. Figures 4A-4C Detailed description.

[0071] The gas telemetry device 100 includes a main body 110, a light emitting module 1, and a light receiving module 120. In this embodiment, the light emitting module 1 and the light receiving module 120 are independently configured and employ a side-axis optical system. The main body 110 includes a mounting structure for fixing the components of the gas telemetry device 100. Both the light emitting module 1 and the light receiving module 120 are mounted on the main body 110. The light emitting module 1 emits outgoing light; in this embodiment, a portion of the outgoing light from the light emitting module 1 is used as the detection light of the gas telemetry device 100. The light receiving module 120 receives the reflected light from the detection light. Figure 4C As shown, the light emitting module 1 can be as described in the previous embodiment, including a light emitting part 10, a heat dissipation part 20, and an adjustment part 30. One end of the light emitting part 10 has a base 11. The heat dissipation part 20 is arranged around the outside of the light emitting part 10. The adjustment part 30 is connected to the heat dissipation part 20 and is arranged around the end of the light emitting part 10 with the base 11. The adjustment part 30 is also connected to the main body 110. The adjustment part 30 is configured to adjust the angle of the light emitting module 1 and to transfer the heat generated by the light emitting module 1 during operation to the main body 110 and / or the heat dissipation part 20. Specifically, according to an embodiment of the present invention, the main body 110 has a mounting part 111. The adjustment part 30 is interference-fitted with the mounting part 111. Most of the heat generated by the light emitting part 10 during operation is transferred to the mounting part 111 via the adjustment part 30 and then dissipated to the external environment by the mounting part 111. A small portion of the heat is transferred to the heat dissipation part 20 via the adjustment part 30 and finally dissipated to the external environment via the main body 110 of the gas telemetry device 100.

[0072] According to a preferred embodiment of the present invention, such as Figure 4C As shown, the light receiving module 120 includes a receiving lens 121, a photodetector 122, and a data acquisition unit. The receiving lens 121 is disposed on the main body 110 and is used to receive and converge the reflected light of the detection light. The photodetector 122 is disposed downstream of the optical path of the receiving lens 121 to receive the reflected light, for example, disposed on the focal plane of the receiving lens 121, and is used to convert the optical signal of the reflected light into an electrical signal. The data acquisition unit then acquires the electrical signal generated by the photodetector 122. Specifically, the photodetector 122 and the data acquisition unit (not shown in the figure) are mounted on a receiving circuit board 123, which is disposed within the main body 110 of the gas telemetry device 100. When the gas telemetry device 100 is in use, the light emitting module 1 emits outgoing light, and a portion of the outgoing light is used as the detection light of the gas telemetry device 100 to detect the gas. After the detection light is reflected, the receiving lens 121 acquires the reflected light. In order to improve the capture efficiency of the reflected light, the receiving lens 121 can be set to a large-size lens. Then, the photodetector 122 converts the information of the reflected light into an electrical signal, and the data acquisition unit acquires the electrical signal for data analysis. The characteristic values ​​of the gas to be detected, such as gas concentration and gas type, are obtained by means of the parameters of the reflected light (such as the time and intensity of the received reflected light).

[0073] like Figure 4CAs shown, in some embodiments of the present invention, the light emitting module 1 also integrates a shaping lens group 40 for collimating the emitted light from the light emitting unit 10. The heat dissipation unit 20 has a circumferential outer wall, and the shaping lens group 40 is wholly or partially disposed within the outer wall of the heat dissipation unit 20. The detection light used for gas telemetry is typically collimated light. In existing gas telemetry equipment, after startup, the laser extends forward along the optical fiber in the butterfly-shaped packaged laser to the collimator. The laser and collimator are arranged separately, and the process of the emitted light entering the collimator from the optical fiber further reduces optical efficiency. However, in the embodiments of the present invention, the shaping lens group 40 is integrated into the light emitting module 1, and the distance between the light emitting unit 10 and the shaping lens group 40 is relatively close, which can reduce angular deviation and optical power loss.

[0074] According to a preferred embodiment of the present invention, the optical emitting module 1 further includes an assembly / adjustment unit 60 (such as...). Figure 3 As shown in the diagram, the adjustment part 60 has a protrusion protruding from the heat dissipation part 20, and an adjustment hole 61 is machined on the protrusion. The adjustment hole 61 can be a through hole or a countersunk hole. The function of the adjustment hole 61 is to cooperate with the adjustment part 30 to change the direction of the emitted light from the light emitting module 1. Specifically, the adjustment part 60 is located on one side of the heat dissipation part 20. When the adjustment part 30 is fixed relative to the mounting part 111 on the main body 110, the direction of the emitted light axis can be adjusted in a plane perpendicular to the emitted light axis of the light emitting part 10 using an external adjustment device. The light emitting module 1 can also be rotated about the direction of the emitted light axis through the adjustment hole 61. This is suitable for situations where the same light emitting module 1 has multiple light sources or eccentric light sources, allowing adjustment of only the position of the emitted light point without changing the direction of the emitted light axis.

[0075] According to a preferred embodiment of the present invention, such as Figures 4A-4C As shown, the gas telemetry device 100 also includes an optical reference module 130, which is disposed on the main body 110 and used to correct the wavelength of the light emitted by the optical emitting module 1. The optical reference module 130 includes a reference gas chamber 131, a beam splitting unit 132, and a receiving unit 133. The reference gas chamber 131 is disposed on the main body 110 and is filled with a reference gas, for example, the same gas as the gas being detected.

[0076] The beam splitter 132 is located downstream of the optical path of the optical emitting module 1. The function of the beam splitter 132 is to separate the emitted light L1 from the optical emitting module into a detection light L2 and a reference light L3. Figure 5 and Figure 6 The detection light L2 illuminates the gas to be detected to complete the gas detection, and the reference light L3 illuminates the reference gas chamber 131. The beam splitting unit 132 may include a semi-transparent mirror or a beam splitter.

[0077] The receiving unit 133 is located downstream of the optical path of the reference light L3 and is used to receive the reference light L3 passing through the reference gas chamber 131. Gas has an absorption effect on optical signals, and the optical signal after gas absorption differs significantly from the optical signal without gas absorption. By comparing the optical signal without gas absorption and the optical signal with gas absorption, the gas absorption peak signal can be obtained. Simultaneously, different gases have different absorption peaks. In this embodiment, the reference gas chamber 131 is filled with the same gas as the gas being detected. When the reference light L3 passes through the reference gas chamber 131 and is received by the receiving unit 133, the absorption peak of the corresponding gas can be obtained. Then, the control unit 134 can control the emitted light L1 of the optical emission module to adjust the wavelength of the emitted light L1 according to the absorption peak of the gas being detected, thereby improving the utilization rate of the emitted light L1. Furthermore, the reference light L3, after passing through the reference gas chamber 131, will also affect other optical parameters. According to some embodiments of the present invention, such as... Figure 6 As shown, when parameter errors occur, or when adjustments to the parameters of the emitted light L1 are needed—for example, causing the receiving unit 133 to fail to receive the reference light L3, or resulting in a large numerical deviation—the control unit 134 controls the light emitting module 1 to adjust and re-emit the emitted light L1 for reference verification. Furthermore, according to some preferred embodiments of the present invention, the reference gas chamber 131 is fixedly connected to or integrally formed with the mounting part 111 to ensure a fixed relative position between the reference gas chamber 131 and the light emitting module 1, ensuring that the receiving unit 133 can accurately receive the reference light L3.

[0078] like Figures 4A-4C As shown, according to a preferred embodiment of the present invention, the gas telemetry device 100 further includes an indicator light emitter 140, which is fixedly mounted on the main body 110, and the optical axis of the light emitted by the indicator light emitter 140 is parallel to the optical axis of the detection light L2. The indicator light emitter 140 is used to indicate the emission direction and position of the detection light L2, and a laser capable of emitting visible light color can be selected as the indicator light to indicate the position of the detection light L2.

[0079] The present invention also includes an embodiment of an assembly and adjustment method for a gas telemetry device 100. The light emitting module 1 is adjusted by the adjustment unit 30 and the assembly and adjustment unit 60 to change the angle of the emitted light L1 of the light emitting module, so that the angle of the emitted light L1 matches the receiving angle of the light receiving module 120 and the receiving unit 133, respectively. Further, the directions of the detection light L2 and the reference light L3 are adjusted to ensure that the light receiving module 120 and the light reference module 130 can receive the reflected light. In the gas telemetry device 100 with the indicator light emitter 140, the detection light L2 is adjusted to be parallel to the indicator light.

[0080] Specifically, after the light emitting module 1 is installed on the main body 110, the adjustment part 30 in the light emitting module 1 cooperates with the mounting part 111. The mounting and adjusting part 60 located at the other end of the light emitting module 1 can drive the light emitting module 1 to rotate slightly relative to the main body 110 about the cooperation position of the adjustment part 30 and the mounting part 111. It can also drive the light emitting module 1 to rotate relative to the main body 110 about the light emission axis. Furthermore, it can drive the light emitting module 1 to translate along the direction of the light emission axis, realizing multi-directional and multi-angle adjustment of the light emitting module 1 to improve the detection accuracy of the gas telemetry device 100. Further, in the gas telemetry device 100 with an optical reference module 130, the angle of the light emitting module 1 can be adjusted using the feedback from the optical reference module 130.

[0081] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An optical emitting module, comprising: A light emitting part, one end of which has a base; A heat dissipation section is provided around the outside of the light emitting section; and An adjustment section is connected to the heat dissipation section and is disposed around one end of the light emitting section having a base. The adjustment section is configured to adjust the angle of the light emitting module. The adjustment section and the heat dissipation section dissipate heat from the light emitting section via multiple paths; the base is used to seal the light emitting section; the heat dissipation section and the adjustment section are integrally formed from metal material. The optical emission module is used in the gas telemetry device, and the adjustment part is close to or attached to the heat-conducting structure or outer wall of the gas telemetry device; the heat dissipation part is not directly attached to the gas telemetry device. The light emitting module also includes a fixing part, which is disposed at one end of the light emitting module having a base and is fixedly connected to the adjusting part. The adjusting part is aligned with the bottom surface of the base.

2. The light emitting module according to claim 1 further includes a shaping lens group, the heat dissipation part has a circumferential outer wall, all or part of the shaping lens group is disposed inside the outer wall of the heat dissipation part, and the shaping lens group is configured to collimate the emitted light from the light emitting part.

3. The light emitting module according to claim 2 further includes an adjustment part, the adjustment part having a protrusion protruding from the heat dissipation part, the protrusion having an adjustment hole, the adjustment hole being used to change the direction of the emitted light of the light emitting module.

4. The light emitting module according to claim 3, wherein the adjustment section is located at one end of the heat dissipation section near the shaping lens group.

5. The light emitting module according to any one of claims 1-4, wherein the heat of the light emitting part is transferred to the outside and / or the heat dissipation part by the adjustment part.

6. A gas telemetry device capable of emitting detection light, the gas telemetry device comprising: main body; A light emitting module is disposed on the main body and is capable of emitting outgoing light; and An optical receiving module is disposed on the main body and configured to receive reflected light from the detection light; The light emitting module includes: A light emitting part, one end of which has a base; A heat dissipation section is disposed around the outside of the light emitting section; and An adjustment section is provided, which is connected to the heat dissipation section and is disposed around one end of the light emitting section having a base. The adjustment section is also connected to the main body and is configured to adjust the angle of the light emitting module. The adjustment section and the heat dissipation section dissipate heat from the light emitting section via multiple paths; the base is used to seal the light emitting section; the heat dissipation section and the adjustment section are integrally formed from metal material. The adjustment part is close to or in contact with the heat-conducting structure or outer wall of the gas telemetry device; the heat dissipation part is not in direct contact with the gas telemetry device. The light emitting module also includes a fixing part, which is disposed at one end of the light emitting module having a base and is fixedly connected to the adjusting part. The adjusting part is aligned with the bottom surface of the base.

7. The gas telemetry device according to claim 6, wherein the light emitting module further includes a shaping lens group, the heat dissipation part has a circumferential outer wall, the shaping lens group is wholly or partially disposed within the outer wall of the heat dissipation part, and the shaping lens group is configured to collimate the emitted light from the light emitting part.

8. The gas telemetry device according to claim 7, wherein the light emitting module further includes an adjustment section, the adjustment section having a protrusion protruding from the heat dissipation section, the protrusion having an adjustment hole, the adjustment hole being used to change the direction of the emitted light of the light emitting module.

9. The gas telemetry device according to claim 6, wherein the main body has a mounting part, the adjusting part is interference-fitted with the mounting part, and the heat of the light emitting part is transferred to the mounting part via the adjusting part.

10. The gas telemetry device according to claim 9, further comprising an optical reference module, the optical reference module being disposed on the main body, the optical reference module comprising: A reference gas chamber is disposed on the main body and filled with a reference gas. A beam splitting unit is configured to split the emitted light from the light emitting module into a detection light and a reference light, and to direct the reference light toward the reference gas cell. A receiving unit configured to receive reference light passing through a reference gas cell; and A control unit configured to control the emitted light emitted by the optical emitting module based on the reference light received by the receiving unit.

11. The gas telemetry device according to claim 10, wherein the reference gas chamber is fixedly connected to or integrally formed with the mounting part.

12. The gas telemetry device according to any one of claims 6-11 further includes an indicator light emitting unit, the indicator light emitting unit being disposed on the main body, and the optical axis of the light emitted by the indicator light emitting unit being parallel to the optical axis of the detection light.

13. The gas telemetry device according to any one of claims 6-11, wherein the optical receiving module comprises a receiving lens, a photodetector, and a data acquisition unit; the receiving lens is disposed on the main body and configured to receive reflected light from the detection light; the photodetector is disposed downstream of the optical path of the receiving lens to receive the reflected light and is configured to convert the optical signal into an electrical signal; the data acquisition unit is configured to acquire the electrical signal.

14. A method for assembling and adjusting a gas telemetry device as described in any one of claims 6-11, the method comprising: The angle of the light emitting module is adjusted by the adjustment section and the mounting section so that the angle of the light emitted by the light emitting module matches the receiving angle of the light receiving module and the receiving unit, respectively.

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