CN216955695U

CN216955695U - Optical transmission module and gas telemetering equipment

Info

Publication number: CN216955695U
Application number: CN202220551581.8U
Authority: CN
Inventors: 尚林乔; 董明; 向少卿
Original assignee: Hesai Technology Co Ltd
Current assignee: Hesai Technology Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-12
Anticipated expiration: 2032-03-14

Abstract

The utility model provides a light emitting module and gas telemetering equipment, wherein the gas telemetering equipment can emit detection light and comprises a main body, the light emitting module and a light receiving module, wherein the light emitting module is arranged on the main body and can emit reflected light, and the light receiving module is arranged on the main body and can receive the reflected light of the detection light. The light emitting module includes: light emission portion, heat dissipation part and adjustment portion, wherein the one end of light emission portion has the base, and the heat dissipation part encircles and sets up in the outside of light emission portion, and the adjustment portion is connected with the heat dissipation part to encircle and set up in the one end that light emission portion has the base, be used for adjusting light emission module's angle. The gas telemetering equipment utilizes the adjusting part and the radiating part in the light emitting module to respectively transmit heat to the outside of the light emitting module, and the heat is transmitted through the gas telemetering equipment body, so that the heat radiation of the gas telemetering equipment is finally realized, the overheating risk of the gas telemetering equipment is effectively reduced, and the emergent light power is improved.

Description

Optical transmission module and gas telemetering equipment

Technical Field

The utility model relates to the field of optical telemetry, in particular to an optical transmission module and gas telemetry equipment.

Background

The gas remote measuring device is a device for acquiring corresponding measurement data by using propagation characteristics of light, such as distance measurement, gas concentration measurement and the like, and is widely applied to multiple fields. The light emitting module in the gas telemetering equipment emits light beams for measurement, and in the working process, especially when the gas telemetering equipment works for a long time or emits high-energy light beams, the light emitting module can generate a large amount of heat, so that the service performance of the gas telemetering equipment is directly influenced. The working principle of the gas remote measuring equipment is that collimated light is utilized to irradiate a specific space, reflected light is received, and then the optical characteristics of the reflected light, such as receiving time, spectrum and the like, are processed in the background to obtain the physical indexes of gas to be detected in the gas space, such as gas concentration, type and the like.

Taking a currently common laser gas telemetering device as an example, a butterfly laser with a higher packaging degree is usually selected as an optical transmission module, as shown in fig. 1, the butterfly laser couples outgoing light into an optical fiber, and then emits a light beam from the other end of the optical fiber, but the butterfly laser causes a large amount of optical power loss due to optical fiber coupling, so that the outgoing optical power is seriously reduced, the butterfly laser has a larger volume, and a circuit board is also required for supporting, the whole device structure is more complex, so that the production cost is high, the miniaturization of the gas telemetering device cannot be further realized, and a heat dissipation structure is usually arranged at the bottom of the laser, so that the heat dissipation direction is single, the heat dissipation is not uniform, the rapid heat dissipation of the laser cannot be realized, and the heat dissipation requirement of the gas telemetering device for using a higher-power laser cannot be met.

The statements in the background section are merely prior art as they are known to the inventors and do not, of course, represent prior art in the field.

SUMMERY OF THE UTILITY MODEL

Aiming at one or more defects in the prior art, the utility model provides the light emitting module which can improve the emergent light power, ensure the heat dissipation efficiency, meet the technical index and reliability requirements applied to the gas remote measuring equipment and provide a foundation for the miniaturization of the gas remote measuring equipment.

The utility model also comprises gas telemetering equipment which utilizes the light emitting module to reduce the hidden danger of overheating and improve the power of emergent light.

It is an object of the present invention to provide a light emitting module that overcomes one or more of the deficiencies of the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an optical transmit module comprising:

a light emitting part having a base at one end thereof;

the heat dissipation part is arranged on the outer side of the light emitting part in a surrounding manner; and

the adjusting part is connected with the radiating part and arranged at one end of the light emitting part with the base in a surrounding mode, and the adjusting part is configured to adjust the angle of the light emitting module.

According to an aspect of the utility model, the light emitting module further comprises a shaping lens group, the heat dissipating part is provided with a circumferential outer wall, the shaping lens group is wholly or partially arranged in the outer wall of the heat dissipating part, and the shaping lens group is configured to collimate emergent light of the light emitting part.

According to an aspect of the present invention, the light emitting module further includes a fixing portion, the fixing portion is disposed at an end of the light emitting portion having the base and is fixedly connected to the adjusting portion, and the adjusting portion is aligned with a bottom surface of the base.

According to an aspect of the utility model, the light emitting module further comprises an adjusting part, the adjusting part is provided with a projection projecting out of the heat dissipation part, the projection is provided with an adjusting hole, and the adjusting hole is used for changing the emergent light direction of the light emitting module.

According to an aspect of the present invention, the adjustment portion is provided at an end of the heat dissipating portion close to the shaping lens group.

According to an aspect of the present invention, wherein the heat radiating portion and the adjusting portion are integrally formed of a metal material.

According to an aspect of the present invention, wherein the heat of the light emitting part is transferred to the outside and/or the heat dissipating part by the adjusting part.

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

a main body;

the light emitting module is arranged on the main body and can emit emergent light; and

a light receiving module disposed on the main body, the light receiving module configured to be capable of receiving reflected light of the detection light;

wherein the light emitting module includes:

a light emitting part having a base at one end thereof;

the adjusting part is connected with the radiating part and arranged at one end of the light emitting part with the base in a surrounding mode, the adjusting part is further connected with the main body, and the adjusting part is configured to be capable of adjusting the angle of the light emitting module.

According to an aspect of the present invention, wherein the main body has a mounting portion with which the adjusting portion is in interference fit, and heat of the light emitting portion is transferred to the mounting portion via the adjusting portion.

According to an aspect of the utility model, wherein the gas telemetry device further comprises an optical reference module disposed on the body, the optical reference module comprising:

the reference gas chamber is arranged on the main body, and reference gas is filled in the reference gas chamber;

a light splitting unit configured to split the outgoing light of the light emitting module into detection light and reference light and to irradiate the reference light toward the reference gas chamber;

a receiving unit configured to receive the reference light passing through the reference gas cell; and

a control unit configured to control outgoing light emitted by the light emitting module according to the reference light received by the receiving unit.

A receiving control device configured to be able to receive the reference light passing through the reference gas chamber and to control the light emitting module to emit the outgoing light.

According to an aspect of the utility model, wherein the reference air chamber is fixedly connected or integrally formed with the mounting portion.

According to an aspect of the present invention, wherein the gas telemetry device further includes an indication light emitting part provided on the main body, and an optical axis of light emitted by the indication light emitting part is parallel to an optical axis of the detection light.

According to an aspect of the present invention, wherein the light receiving module includes a receiving lens, a photodetector, and a data collecting unit, the receiving lens being disposed on the main body, the receiving lens being configured to be capable of receiving reflected light of the detection light; the photoelectric detector is arranged on the optical path downstream of the receiving lens to receive the reflected light, and the photoelectric detector is configured to convert an optical signal into an electrical signal; the data acquisition unit is configured to be capable of acquiring the electrical signal.

A method of fitting a gas telemetry unit as hereinbefore described, the method comprising:

the direction of the light emitting module is adjusted through the adjusting part and the adjusting part, so that the emergent light angle of the light emitting module is respectively matched with the receiving angles of the light receiving module and the receiving unit.

Compared with the prior art, the embodiment of the gas remote measuring equipment provided by the utility model has the advantages that the adjusting part and the radiating part in the light emitting module are utilized to respectively transfer heat to the outside of the light emitting module, and the heat is transferred through the main body of the gas remote measuring equipment, the radiating efficiency is improved, the heat radiation is more uniform, the overheating problem of the gas remote measuring equipment is effectively avoided, the emergent light power is improved, the normal use of the gas remote measuring equipment is ensured, the size of the light emitting module is smaller, the gas remote measuring equipment can be smaller and more convenient, the emergent light power of the light emitting module is improved, the arrangement form of the light emitting module is adjusted through the outside, the internal structure of the light emitting module is simplified, the production and processing process is simple, the cost is low, and the angle of the emergent light can be conveniently adjusted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a prior art laser gas telemetry device;

FIG. 2 is a schematic diagram of an optical transmit module in one embodiment of the utility model;

FIG. 3 is an axial cross-sectional view of a light emitting module in one embodiment of the utility model;

FIG. 4A is a first schematic diagram of the configuration of a gas telemetry device in accordance with an embodiment of the present invention;

FIG. 4B is a schematic diagram II of the structure of a gas telemetry device in accordance with an embodiment of the present invention;

FIG. 4C is an exploded view of a gas telemetry device in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of the optical path of a gas telemetry device in accordance with an embodiment of the present invention;

FIG. 6 is a block diagram of the optical path of a gas telemetry device in an embodiment of the present invention.

Reference numerals: 1. the gas remote sensing device comprises a light emitting module, 10, a light emitting part, 11, a base, 20, a heat dissipation part, 30, an adjusting part, 40, a shaping lens group, 50, a fixing part, 60, an adjusting part, 61, an adjusting hole, 100, a gas remote sensing device, 110, a main body, 111, a mounting part, 120, a light receiving module, 121, a receiving lens, 122, a photoelectric detector, 123, a receiving circuit board, 130, a light reference module, 131, a reference gas chamber, 132, a light splitting unit, 133, a receiving unit, 134, a control unit, 140 and an indicating light emitter, wherein L1, emergent light, L2, detection light, L3 and reference light.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or in communication with each other; 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 according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

According to a preferred embodiment of the present invention, the light emitting module 1 comprises a light emitting part 10, a heat dissipating part 20 and an adjusting part 30, wherein one end of the light emitting part 10 has a base 11, the heat dissipating part 20 is disposed around the outside of the light emitting part 10, the adjusting part 30 is connected to the heat dissipating part 20 and disposed around one end of the light emitting part 10 having the base 11, and the adjusting part 30 is configured to adjust the angle of the light emitting module 1. In specific embodiment, light emitting module 1 mainly outwards transmits the heat through adjustment portion 30, and heat dissipation portion 20 dispels the heat through the multipath as supplementary heat radiation structure, improves the radiating efficiency for it is more even to dispel the heat, has effectively avoided overheated problem, and light emitting module 1 can directly regard as the emergent light source, reduces the optical power loss.

Fig. 2 shows the structure of the optical transmission module 1 according to an embodiment of the present invention, and fig. 3 shows a cross-sectional view of the optical transmission module 1, and the optical transmission module 1 may be used for a gas telemetry device. As described in detail below in conjunction with fig. 2 and 3.

As shown in fig. 3, the optical transmitter module 1 includes an optical transmitter 10, a heat sink 20 and an adjuster 30, wherein one end of the optical transmitter 10 has a base 11, the optical transmitter 10 is a device for directly transmitting outgoing light, and different types or different packaging types of lasers, such as TO lasers, can be selected according TO different usage requirements and usage environments, and the TO lasers have simple structures, high power and small size. The base 11 is used to cooperate with the adjusting portion 30 and the fixing portion 50, the base 11 is disposed at one end of the light emitting portion 10, and can be made to protrude from other portions of the light emitting portion 10, for example, the base is disposed as a flange, the adjusting portion 30 has a groove cooperating with the base 11, and the base is attached and fixed to the side of the base 11, for example, by gluing, or is fixedly connected to the adjusting portion 30 by the cooperation of the flange and a bolt. The base 11 may also serve to seal the light emitting part 10 to protect components therein and to fix power supply leads of the light emitting part 10.

As shown in fig. 3, the heat dissipation part 20 is disposed around the outside of the light emitting part 10, and the heat dissipation part 20 may be directly attached to the outside of the light emitting part 10, or according to a preferred embodiment of the present invention, the heat dissipation part 20 is not completely attached to the outside of the light emitting part 10, but has a certain distance to prevent the thermal expansion coefficient of the heat dissipation part 20 and the light emitting part 10 from being different from each other, thereby preventing the internal structural stability from being affected. In a conventional light emitter, a heat sink is generally disposed at the bottom of the base to dissipate heat, and the position of the heat dissipation portion 20 in this embodiment does not need to be disposed on the base 11. According TO the analysis of the heat dissipation condition of the optical transmission module 1 in the embodiment of the present invention, for example, in the TO package laser, when the optical transmission module 1 starts TO operate, the heat generation position is mainly concentrated near the base 11 of the optical transmission unit 10 and is transmitted outward through the adjustment unit 30, most of the heat is directly transmitted TO the main body of the gas telemetry device, and a small part of the heat is transmitted TO the heat dissipation unit 20 through the adjustment unit 30, or is transmitted TO the heat dissipation unit 20 through another position of the optical transmission unit 10 and is dissipated TO the external environment through the heat dissipation unit 20.

In the embodiment of the present invention, the adjusting part 30 is disposed around the base 11 of the light emitting part 10, when the light emitting part 10 is in operation, the heat concentrated at the base 11 is mainly guided by the adjusting part 30, in order to improve the heat transfer efficiency and uniformly dissipate the heat, in some preferred embodiments of the present invention, the adjusting part 30 and the heat dissipating part 20 are made of metal materials and are integrally formed, the adjusting part 30 and the heat dissipating part 20 can also be made of different materials, for example, the heat dissipating part 20 is made of a material with good heat conductivity to improve the heat dissipation efficiency, the adjusting part 30 not only plays a role in heat dissipation, but also is used for adjusting the angle of the light emitting module 1, and can be made of a material with good heat conductivity and high hardness to enable the heat to be quickly transferred to the heat dissipating part 20, and the heat dissipating part 20 and the adjusting part 30 simultaneously dissipate the heat to the outside of the light emitting module 1, and ensures a stable structure when adjusting the light emitting module 1. In specific gas telemetry equipment, adjusting portion 30 may be brought close to or attached to a heat conducting structure or an outer wall of the gas telemetry equipment by structural design, so that heat is conducted to a main body of the gas telemetry equipment to accelerate heat dissipation.

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

The adjusting part 30 is connected with the heat dissipating part 20, and in some preferred embodiments of the present invention, the adjusting part 30 is integrally formed with the heat dissipating part 20. The adjusting part 30 may be used to adjust the installation angle of the light emitting module 1. Adjusting part 30 encircles the one end that has base 11 that sets up in light-emitting part 10, and adjusting part 30 and base 11 cooperate, after installing light-emitting module 1 in gaseous telemetering equipment, can adjust adjusting part 30 through the control to change light-emitting module 1's installation angle, and then the angle of the detection light that gaseous telemetering equipment sent is rectified.

According to a preferred embodiment of the present invention, as shown in fig. 3, the light emitting module 1 further includes a shaping lens group 40, the shaping lens group 40 is disposed downstream of the light emitting portion 10 in the optical path, and the shaping lens group 40 includes one or more lenses for collimating the emergent light from the light emitting portion 10. In order to fix the relative position of the shaping lens group 40 and the light emitting part 10 and ensure the collimation effect, in the present embodiment, all or part of the lenses in the shaping lens group 40 are disposed in the outer wall of the heat dissipating part 20, for example, in fig. 3, the schematic shaping lens group 40 includes two lenses, one of the lenses is disposed at a position close to the light emitting part 10, the other lens is disposed at an end opposite to the light emitting part 10 in the heat dissipating part 20, and the shaping lens group 40 is fixed by the heat dissipating part 20, even if the position and angle of the light emitting part 10 are changed, the collimation effect of the shaping lens group 40 is not affected. According to another embodiment of the present invention, the shaping lens group 40 may include a plurality of lenses, wherein some of the lenses may be disposed outside the heat dissipation part 20 and fixed by a structure in the gas telemetry device, and the collimating effect is achieved by adjusting the positional relationship between the light emitting part 10 and the gas telemetry device.

The traditional gas remote measuring equipment generally adopts a butterfly-shaped packaging laser as a light emitting part, the butterfly-shaped packaging laser is integrated with an optical fiber, and the butterfly-shaped packaging laser can be used as a light emitting module of the gas remote measuring equipment after a collimator is arranged at the light emitting position of the butterfly-shaped packaging laser. However, the optical efficiency is greatly reduced due to the butterfly-shaped packaging laser coupled with the optical fiber, and the butterfly-shaped packaging laser occupies a large space, which is not beneficial to reducing the volume of the optical telemetry equipment. In some embodiments of the present invention, the shaping lens group 40 is directly disposed in the heat dissipation portion 20, and optical fibers are not needed, so that the light extraction efficiency can be greatly improved, the occupied space is small, and the processing process is simple.

As shown in fig. 2 and 3, according to a preferred embodiment of the present invention, the light emitting module 1 further includes a fixing portion 50, the fixing portion 50 is disposed at one end of the light emitting portion 10 having the base 11, the adjusting portion 30 is flush with the bottom surface of the base 11, when the light emitting module 1 is adjusted, the light emitting portion 10 and the adjusting portion 30 move synchronously, so as to improve the accuracy of adjustment, and the fixing portion 50 is fixedly connected to the adjusting portion 30. In the conventional light emitting part 10, in order to reduce the size, the base 11 is generally small, so that the combining surface with the adjusting part 30 is small, and even if the base 11 is fixedly connected with the adjusting part 30, the light emitting part 10 may rotate or fall off relative to the adjusting part 30, therefore, the embodiment provides the fixing part 50 at one end of the base 11, and fixedly connects the fixing part 50 with the adjusting part 30, so as to ensure the overall structure stability of the light emitting module 1. Specifically, the fixing portion 50 and the adjusting portion 30 may be fixedly connected by bolts and pre-formed threaded holes, or may be fixed by interference fit, adhesive fixation, or snap fit.

As shown in fig. 3, according to a preferred embodiment of the present invention, the light emitting module 1 further includes an adjustment part 60, the adjustment part 60 is disposed outside the heat dissipating part 20 and has a protrusion protruding from the heat dissipating part 20, the protrusion is formed with an adjustment hole 61, and the adjustment hole 61 is used for adjusting the direction of light emitted from the light emitting module 1. The adjustment part 60 is disposed outside 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, and by adjusting the adjustment part 30 and the adjustment part 60, the position and direction of the emergent light of the light emitting module 1 can be adjusted from multiple directions and angles, so as to ensure the accuracy of the detection light transmission direction, and the specific adjustment mode is described in detail in the following embodiments. According to some preferred embodiments of the present invention, as shown in fig. 3, the adjustment part 60 is disposed at one end of the heat dissipating part 20 close to the shaping lens group 40, that is, the adjustment part 60 is far from the adjusting part 30, so that adjustment is performed from both ends of the light emitting module 1 in synchronization, thereby improving the adjustment accuracy of the light emitting module 1.

According to an embodiment of the present invention with respect to the gas telemetry device 100, 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 part of the outgoing light is used as the detection light of the gas telemetry device 100, and the light receiving module 120 is disposed on the main body 110 and is capable of receiving reflected light of the detection light. The light emitting module 1 includes a light emitting portion 10, a heat dissipating portion 20 and an adjusting portion 30, wherein one end of the light emitting portion 10 has a base 11, the heat dissipating portion 20 is disposed around the outer side of the light emitting portion 10, the adjusting portion 30 is connected to the heat dissipating portion 20 and disposed around the end of the light emitting portion 10 having the base 11, the adjusting portion 30 is further connected to the main body 110, and the adjusting portion 30 can adjust an angle of the light emitting module 1.

Fig. 4A-4C illustrate the detailed structure of the gas telemetry device 100 in one embodiment of the present invention, and the following structural diagrams 4A-4C are described in detail.

The gas telemetry device 100 includes a main body 110, an optical transmission module 1 and an optical reception module 120, and in the present embodiment, the optical transmission module 1 and the optical reception module 120 are independently provided, and adopt a paraxial transceiving optical system. The main body 110 includes a mounting structure for fixing components in the gas telemetry device 100, the optical transmitter module 1 and the optical receiver module 120 are both disposed on the main body 110, the optical transmitter module 1 is used for transmitting outgoing light, in this embodiment, a part of the outgoing light of the optical transmitter module 1 is used as detection light of the gas telemetry device 100, and the optical receiver module 120 is used for receiving reflected light of the detection light. As shown in fig. 4C, the light emitting module 1 may include a light emitting portion 10, a heat dissipating portion 20, and an adjusting portion 30 as described in the previous embodiments, wherein one end of the light emitting portion 10 has a base 11, the heat dissipating portion 20 is disposed around the outside of the light emitting portion 10, the adjusting portion 30 is connected to the heat dissipating portion 20 and disposed around the end of the light emitting portion 10 having the base 11, the adjusting portion 30 is further connected to the main body 110, and the adjusting portion 30 is configured to adjust an angle of the light emitting module 1 and to transfer heat generated when the light emitting module 1 operates to the main body 110 and/or the heat dissipating portion 20. Specifically, according to the embodiment of the present invention, the main body 110 has the mounting portion 111, the adjusting portion 30 is in interference fit with the mounting portion 111, most of the heat generated by the operation of the light emitting portion 10 is transferred to the mounting portion 111 through the adjusting portion 30 and then dissipated to the external environment through the mounting portion 111, and a small portion of the heat is transferred to the heat dissipating portion 20 through the adjusting portion 30 and finally dissipated to the external environment through the main body 110 of the gas remote sensing apparatus 100.

According to a preferred embodiment of the present invention, as shown in fig. 4C, the light receiving module 120 includes a receiving lens 121, a photodetector 122, and a data collecting unit, and the receiving lens 121 is disposed on the main body 110 for receiving the reflected light of the detection light and performing convergence. The photodetector 122 is disposed downstream of the receiving lens 121 in the optical path to receive the reflected light, for example, is disposed on the focal plane of the receiving lens 121, and is configured to convert the optical signal of the reflected light into an electrical signal and collect the electrical signal generated by the photodetector 122 by a data collecting unit, specifically, the photodetector 122 and the data collecting unit (not shown in the figure) are mounted on a receiving circuit board 123, and the receiving circuit board 123 is disposed in the main body 110 of the gas telemetry device 100. When the gas telemetry device 100 is used, emergent light is emitted by the light emitting module 1, a part of the emergent light is used as detection light of the gas telemetry device 100 and is used for detecting gas, reflected light is obtained by the receiving lens 121 after the detection light is reflected, in order to improve the capture efficiency of the reflected light, the receiving lens 121 can be set to be a large-size lens, then information of the reflected light is converted into an electric signal by the photoelectric detector 122, the electric signal is collected by the data collecting unit and is used for data analysis, and characteristic values of the gas to be detected, such as gas concentration, gas type and the like, are obtained through parameters of the reflected light (such as time and light intensity of the received reflected light and the like).

In some embodiments of the present invention, as shown in fig. 4C, the light emitting module 1 further integrates a shaping lens group 40 for collimating the emergent light of the light emitting portion 10, wherein the heat dissipating portion 20 has a circumferential outer wall, and the shaping lens group 40 is wholly or partially disposed in the outer wall of the heat dissipating portion 20. The detection light for gas remote measurement is usually collimated light, after the existing gas remote measurement equipment is started, laser extends forwards to a collimator along an optical fiber in a butterfly-shaped packaging laser, the laser and the collimator are arranged separately, and the light efficiency is further reduced when emergent light enters the collimator from the optical fiber, in the embodiment of the utility model, the shaping lens group 40 is integrated in the light emitting module 1, and the distance between the light emitting part 10 and the shaping lens group 40 is short, so that the angle deviation and the optical power loss can be reduced.

According to a preferred embodiment of the present invention, the light emitting module 1 further includes an adjusting portion 60 (as shown in fig. 3), wherein the adjusting portion 60 has a protrusion protruding out of the heat dissipating portion 20, the protrusion is provided with an adjusting hole 61, the adjusting hole 61 may be a through hole or a counter hole, and the adjusting hole 61 is used to cooperate with the adjusting portion 30 to change the direction of the light emitted from the light emitting module 1. Specifically, the adjustment unit 60 is provided on one side of the heat dissipation unit 20, and when the adjustment unit 30 is fixed to the mounting unit 111 of the main body 110, the direction of the light exit axis can be adjusted by an external adjustment unit in a plane perpendicular to the light exit axis of the light emission unit 10. The light emitting module 1 can be driven to rotate by taking the direction of the light emitting axis as an axis through the adjusting hole 61, so that the light emitting module is suitable for the condition that the same light emitting module 1 has a multi-point light source and an eccentric light source, and only the position of the light emitting point is adjusted under the condition that the direction of the light emitting axis is not changed.

In accordance with a preferred embodiment of the present invention, as shown in fig. 4A-4C, gas telemetry device 100 further includes an optical reference module 130, optical reference module 130 being disposed on body 110 for correcting the wavelength of light emitted from optical transmit module 1. The optical reference module 130 includes a reference gas chamber 131, a light splitting unit 132 and a receiving unit 133, wherein the reference gas chamber 131 is disposed on the main body 110, and the reference gas chamber 131 is filled with a reference gas, for example, the reference gas chamber 131 is filled with the same gas as the detected gas.

The light splitting unit 132 is disposed downstream of the optical path of the light emitting module 1, and the light splitting unit 132 functions to split the outgoing light L1 of the light emitting module into the detection light L2 and the reference light L3. Referring to fig. 5 and 6, in which the detection light L2 is irradiated to the gas to be detected for completing the gas detection, the reference light L3 is irradiated to the reference gas cell 131. The light splitting unit 132 may include a half mirror or a beam splitter.

The receiving unit 133 is disposed downstream of the optical path of the reference light L3, and receives the reference light L3 passing through the reference cell 131. The gas has an absorption effect on the optical signal, the optical signal after gas absorption and the optical signal without gas absorption have obvious difference, and the gas absorption peak signal can be obtained by comparing the optical signal without gas absorption and the optical signal with gas absorption. Meanwhile, different gas absorption peaks are different, the reference gas chamber 131 in this embodiment is filled with the same gas as the detected gas, 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, and then the control unit 134 can control the emergent light L1 of the light emitting module, so as to adjust the wavelength of the emergent light L1 according to the absorption peak of the detected gas, and further improve the utilization rate of the emergent light L1. In addition, after the reference light L3 passes through the reference air chamber 131, other optical parameters may also be affected, and according to some embodiments of the present invention, as shown in fig. 6, when a parameter error occurs, or a parameter of the outgoing light L1 needs to be adjusted, for example, the receiving unit 133 cannot receive the reference light L3, or a large value deviation occurs, the control unit 134 controls the light emitting module 1 to adjust and re-emit the outgoing light L1, so as to perform reference verification. Further, according to some preferred embodiments of the present invention, the reference gas chamber 131 is fixedly connected to or integrally formed with the mounting portion 111 to ensure that the relative positional relationship between the reference gas chamber 131 and the light emitting module 1 is fixed, and the receiving unit 133 can accurately receive the reference light L3.

As shown in fig. 4A-4C, according to a preferred embodiment of the present invention, gas telemetry device 100 further includes an indication light emitter 140, indication light emitter 140 being fixedly disposed on body 110, and an optical axis of light emitted by indication light emitter 140 being parallel to an optical axis of detection light L2. The indicating light emitter 140 is used to indicate the emitting direction and position of the detection light L2, and laser light capable of emitting visible light color may be selected as the indicating light to indicate the position of the detection light L2.

The present invention also includes an embodiment of a tuning method of gas telemetry device 100, in which light emitting module 1 is adjusted by adjusting part 30 and tuning part 60 to change the angle of outgoing light L1 of the light emitting module so that the angle of outgoing light L1 of the light emitting module matches the receiving angles of light receiving module 120 and receiving unit 133, respectively. Further, the directions of detection light L2 and reference light L3 are adjusted to ensure that light receiving module 120 and light reference module 130 can receive reflected light, and in gas telemetry device 100 with indication light emitter 140, detection light L2 is adjusted to be parallel to the indication light.

Specifically, after installing optical transmission module 1 on main part 110, adjustment portion 30 in optical transmission module 1 cooperatees with installation department 111, the installation and adjustment portion 60 that sets up the other end at optical transmission module 1 can drive optical transmission module 1 for main part 110, do slight rotation as the centre of a circle with the cooperation position of adjustment portion 30 and installation department 111, also can drive optical transmission module 1 for main part 110, use the light-emitting shaft to rotate as the axle, can also drive optical transmission module 1 along the direction translation of light-emitting shaft, realize the regulation of optical transmission module 1 multi-direction and multi-angle, in order to improve gas telemetry device 100's detection accuracy. Further, in the gas telemetry device 100 having the optical reference module 130, the angle of the light emitting module 1 may be adjusted using feedback of the optical reference module 130.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical transmit module, comprising:

a light emitting part having a base at one end thereof;

the heat dissipation part is arranged at the outer side of the light emitting part in a surrounding way; and

2. The light emitting module of claim 1, further comprising a shaping lens set, wherein the heat dissipating portion has a circumferential outer wall, the shaping lens set is disposed wholly or partially within the outer wall of the heat dissipating portion, and the shaping lens set is configured to collimate outgoing light from the light emitting portion.

3. The optical transmit module of claim 1, further comprising a fixing portion disposed at an end of the optical transmit portion having a base and fixedly connected to the adjusting portion, wherein the adjusting portion is aligned with a bottom surface of the base.

4. The optical transmit module of claim 2, further comprising an adjustment portion having a protrusion protruding from the heat dissipation portion, the protrusion having an adjustment hole for changing the direction of the emitted light from the optical transmit module.

5. The optical transmit module of claim 4, wherein the adjustment portion is disposed at an end of the heat dissipation portion near the shaping lens set.

6. The optical transmit module of claim 1, wherein the heat sink portion and the adjustment portion are integrally formed of a metal material.

7. The light emitting module according to any one of claims 1 to 6, wherein heat of the light emitting part is transferred to an outside and/or a heat dissipating part by the adjusting part.

8. A gas telemetry device capable of emitting detection light, the gas telemetry device comprising:

a main body;

wherein the light emitting module includes:

a light emitting part having a base at one end thereof;

9. The gas telemetry device of claim 8, wherein the light emitting module further comprises a shaping lens assembly, the heat sink portion having a circumferential outer wall, the shaping lens assembly being disposed wholly or partially within the outer wall of the heat sink portion, the shaping lens assembly being configured to collimate outgoing light from the light emitting portion.

10. The gas telemetry device of claim 9, wherein the light emitting module further comprises an adjustment portion having a protrusion protruding out of the heat sink portion, the protrusion having an adjustment hole therein for changing an exit light direction of the light emitting module.

11. The gas telemetry device of claim 8, wherein the body has a mounting portion, the adjustment portion is in interference fit with the mounting portion, and heat of the light emitting portion is transferred to the mounting portion via the adjustment portion.

12. The gas telemetry device of claim 11, further comprising an optical reference module disposed on the body, the optical reference module comprising:

13. The gas telemetry device of claim 12, wherein the reference gas chamber is fixedly attached to or integrally formed with the mounting portion.

14. The gas telemetry device of any of claims 8-13, further comprising an indicator light emitting portion disposed on the body, wherein an optical axis of light emitted by the indicator light emitting portion is parallel to an optical axis of the detection light.

15. The gas telemetry device of any one of claims 8-13, wherein the light receiving module includes a receiving lens, a photodetector, and a data acquisition unit, the receiving lens disposed on the body, the receiving lens configured to receive reflected light of the detected light; the photoelectric detector is arranged on the optical path downstream of the receiving lens to receive the reflected light, and the photoelectric detector is configured to convert an optical signal into an electrical signal; the data acquisition unit is configured to be capable of acquiring the electrical signal.