CN221019128U - Optical module and double-facula laser system - Google Patents

Abstract

The application discloses an optical module and a double-spot laser system, wherein the optical module is applied to the double-spot laser system, a collimating lens of the double-spot laser system is used for carrying out collimation treatment on an initial laser beam to form a collimated laser beam irradiated along a first direction, and the collimated laser beam is divided into a first beam and a second beam along a second direction perpendicular to the first direction; the optical module comprises a lens assembly, wherein the lens assembly comprises a first lens and a second lens which are sequentially arranged in a first direction, the first lens and the second lens are arranged in a staggered manner in a second direction, and the first lens and the second lens are mutually complementary lenses; the lens assembly is partially positioned in the optical path of the first light beam, so that the first light beam passes through the optical module to form a third light beam deviating from the second light beam in the second direction. The technical scheme can enable the laser light spots to be positioned at two ends of electronic components such as chips, thereby avoiding the problems of damage to the electronic components, repair or poor welding caused by laser radiation.

Description

Optical module and double-facula laser system

Technical Field

The application relates to the technical field of laser repair or welding, in particular to an optical module and a double-facula laser system.

Background

At present, a laser technology is adopted to repair or weld electronic components such as chips, which is generally implemented by a single-spot laser system, that is, a laser light source forms a laser spot to heat welding spots at two ends of the electronic components such as chips at the same time, so that after the welding spots at two ends of the electronic components are melted, the electronic components are removed for repair treatment, or cooling and solidifying are implemented to weld the electronic components. However, in the practical use process, it is found that in the process of heating the welding spots at two ends of electronic components such as a chip, the single-spot laser of the single-spot laser system covers the surfaces of the electronic components, so that the laser radiation can damage the electronic components, and the problems of repair or poor welding are caused.

Disclosure of Invention

The embodiment of the application provides an optical module and a double-spot laser system, which aim to solve the technical problem that the existing single-spot laser system damages electronic components, such as chips, in the laser repair or welding process of the electronic components, so that the repair or welding defects of the electronic components are caused.

To this end, a first aspect of the embodiment of the present application provides an optical module, which is applied to a dual-spot laser system, where the dual-spot laser system includes a collimating lens and a focusing lens, the collimating lens is configured to collimate an initial laser beam to form a collimated laser beam irradiated along a first direction, the focusing lens is configured to focus the collimated laser beam to form a corresponding laser spot, and the collimated laser beam is divided into a first beam and a second beam along a second direction perpendicular to the first direction;

The optical module comprises a lens assembly, wherein the lens assembly comprises a first lens and a second lens which are sequentially arranged in the first direction, the first lens and the second lens are arranged in a staggered manner in the second direction, and the first lens and the second lens are mutually complementary lenses;

The lens assembly is partially positioned in the optical path of the first light beam such that the first light beam, after passing through the lens assembly, forms a third light beam that is offset from the second light beam in the second direction.

Optionally, in some embodiments, the first lens is a first cylindrical lens and the second lens is a second cylindrical lens;

The first cylindrical lens is provided with a first surface with a planar structure and a second surface with a curved surface structure, and the second cylindrical lens is provided with a third surface with a planar structure and a fourth surface with a curved surface structure;

The first surface faces one side where the collimating lens is located, the fourth surface faces one side where the second surface is located, the sum of the focal length of the fourth surface and the focal length of the second surface is 0, and the distance between the center of the fourth surface and the center of the second surface in the first direction is 3-5 mm.

Optionally, in some embodiments, the second surface is a convex structure, and the fourth surface is a concave structure adapted to the convex structure; or alternatively, the first and second heat exchangers may be,

The second surface is a concave structure, and the fourth surface is a convex structure matched with the concave structure.

Optionally, in some embodiments, the optical module further comprises a first adjustment mechanism for driving the lens assembly to move back and forth in the second direction.

Optionally, in some embodiments, the optical module further includes a second adjustment mechanism for separately driving the first lens to move relative to the second lens in the second direction or separately driving the second lens to move relative to the first lens in the second direction.

In addition, a second aspect of the embodiment of the present application provides a dual-spot laser system, which includes a laser light source assembly, a collimating lens, a focusing lens, and the optical module described above,

The laser source assembly is used for providing an initial laser beam;

The collimating lens is used for carrying out collimation treatment on the initial laser beam to form a collimated laser beam irradiated along a first direction, and the collimated laser beam is divided into a first beam and a second beam along a second direction perpendicular to the first direction;

The optical module is partially positioned in the optical path of the first light beam and is used for forming a third light beam deviating from the second light beam in the second direction after the first light beam passes through the lens assembly;

and the focusing lens is used for respectively focusing the third light beam and the second light beam so as to correspondingly form a first laser spot and a second laser spot.

Optionally, in some embodiments, a first mirror and a first dichroic mirror are also included, wherein,

The first reflecting mirror is obliquely arranged in the light paths of the third light beam and the second light beam at an angle of 45 degrees and is used for enabling the light paths of the third light beam and the second light beam to be changed at an angle of 90 degrees;

the first dichroic mirror is obliquely arranged in the light path of the third light beam and the second light beam after 90 degrees change at an angle of 45 degrees, and is used for enabling the light paths of the third light beam and the second light beam to be changed again at 90 degrees;

The focusing lens is arranged in the light path of the third light beam and the second light beam after the 90-degree change again, and focuses the third light beam and the second light beam respectively to form a first laser spot and a second laser spot correspondingly.

Optionally, in some embodiments, an infrared thermometry component or a machine vision component is also included, wherein,

The first dichroic mirror is further used for transmitting high-temperature infrared light and visible light on one side where the focusing lens is located;

The infrared temperature measuring component or the machine vision component is positioned at one side of the first dichroic mirror away from the focusing lens in the first direction and is used for receiving the high-temperature infrared light for temperature monitoring or receiving the visible light for visual monitoring.

Optionally, in some embodiments, a second dichroic mirror, an infrared thermometry component, and a machine vision component are also included, wherein,

The first dichroic mirror is further used for transmitting high-temperature infrared light and visible light on one side where the focusing lens is located;

The second dichroic mirror is obliquely arranged at 45 degrees on one side of the first dichroic mirror away from the focusing lens in the first direction, and is used for transmitting the high-temperature infrared light and enabling the optical path of the visible light to be changed by 90 degrees;

The infrared temperature measuring component is arranged on one side of the second dichroic mirror far away from the first dichroic mirror in the first direction and is used for receiving the high-temperature infrared light for temperature monitoring;

The machine vision assembly is positioned in the light path after the visible light is changed by 90 degrees and is used for receiving the visible light for visual monitoring.

Optionally, in some embodiments, a second mirror is also included, wherein,

The second reflecting mirror is obliquely arranged in the light path of the visible light after 90 degrees of change, and is used for enabling the light path of the visible light to be changed again by 90 degrees;

The machine vision assembly is positioned in the light path after the visible light is changed by 90 degrees again and is used for receiving the visible light for visual monitoring.

The optical module comprises a lens assembly, wherein the lens assembly comprises a first lens and a second lens which are sequentially arranged in a first direction, the first lens and the second lens are arranged in a staggered mode in a second direction, and the first lens and the second lens are mutually complementary lenses. When the lens assembly is partially positioned in the optical path of the first light beam, the first light beam can be made to pass through the lens assembly to form a third light beam which is deviated from the second light beam in the second direction. In this way, the arrangement of the optical module of the dual-facula laser system of the application enables the collimated laser beams from the collimating lens to be converted into the third and the second beams which are mutually independent in the second direction from the first and the second beams which are mutually integrated in the second direction, so that the focusing lens can focus the third and the second beams respectively to correspondingly form the first and the second laser spots when focusing the collimated laser beams. Therefore, the optical module can lead the dual-facula laser system to finally form the first laser facula and the second laser facula which can respectively heat welding spots at two ends of electronic components such as chips and the like at the same time, and the first laser facula and the second laser facula only cover the welding spots at the corresponding ends of the electronic components and can not cover the surfaces of the electronic components, thereby avoiding the problems of damage to the electronic components caused by laser radiation and repair or poor welding of the electronic components.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating a use state of an optical module according to an embodiment of the application;

fig. 2 is a schematic structural diagram of a dual-spot laser system according to an embodiment of the present application.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present application.

In one embodiment, as shown in fig. 1, an embodiment of the present application provides an optical module 100, where the optical module 100 is specifically applied to a dual-spot laser system, and the dual-spot laser system may specifically include a collimating lens 200 and a focusing lens 300, where the collimating lens 200 is mainly used to collimate an initial laser beam to form a collimated laser beam irradiated along a first direction, the focusing lens 300 is mainly used to focus the collimated laser beam to form a corresponding laser spot, and the collimated laser beam is divided into a first beam 11 and a second beam 12 along a second direction perpendicular to the first direction; the optical module 100 may specifically include a lens assembly 110, where the lens assembly 110 includes a first lens 111 and a second lens 112 sequentially disposed in a first direction, the first lens 111 and the second lens 112 are disposed in a dislocation manner in a second direction, and the first lens 111 and the second lens 112 are complementary lenses; the lens assembly 110 is partially positioned in the optical path of the first light beam 11 such that the first light beam, after passing through the lens assembly 110, forms a third light beam 13 that is offset from the second light beam 12 in the second direction.

It is understood that the dual-spot laser system according to the embodiments of the present application may be any laser system that heats, welds, and cuts by using laser spots. The first direction may be a vertical direction shown in the drawings, and the second direction may be a horizontal direction shown in the drawings, so that the two directions are perpendicular to each other. The fact that the first lens 111 and the second lens 112 are complementary to each other means that the shape and refractive index of the second lens 112 correspond to those of the first lens 111, but have opposite effects to cancel aberration caused by the first lens 111. Meanwhile, the first lens 111 and the second lens 112 are arranged in a staggered manner in the second direction, so that the first light beam 11 passes through the lens assembly 110 to form the third light beam 13, and the direction of the light path of the third light beam 13 is kept in the first direction while the second direction is deviated from the second light beam 12 (i.e. the third light beam 13 has a certain interval distance from the second light beam 12 in the second direction).

In addition, the collimated laser beam is divided into a first beam 11 and a second beam 12 along a second direction perpendicular to the first direction, and the lens assembly 110 is partially located in the optical path of the first beam 11, which may also be understood as dividing the collimated laser beam into the first beam 11 and the second beam 12 along the second direction when the portion of the lens assembly 110 is disposed in the partial optical path of the collimated laser beam, that is, the portion of the optical path of the collimated laser beam passing through the lens assembly 110 is divided into the first beam 11, and the portion of the optical path of the collimated laser beam not passing through the lens assembly 110 is divided into the second beam 12.

In this way, through the optical module 100 provided by the embodiment of the present application, the collimated laser beams from the collimating lens 200 of the dual-spot laser system are converted from the first beam 11 and the second beam 12, which are originally integrated with each other in the second direction, into the third beam 13 and the second beam 12, which are mutually independent in the second direction, so that when the focusing lens 300 of the dual-spot laser system focuses the collimated laser beams, the third beam and the second beam can be focused respectively to correspondingly form the first laser spot and the second laser spot. Thus, the optical module 100 provided in the embodiment of the present application can enable the dual-spot laser system to finally form the first laser spot and the second laser spot which can respectively perform simultaneous heating treatment on the welding spots at two ends of the electronic components, such as the chip, and the first laser spot and the second laser spot only cover the welding spots at the corresponding ends of the electronic components, but not cover the surfaces of the electronic components, thereby avoiding the problems of damage to the electronic components caused by laser radiation and repair or poor welding of the electronic components.

In some examples, as shown in fig. 1, the first lens 111 may be specifically a first cylindrical lens and the second lens 112 may be specifically a second cylindrical lens. The first cylindrical lens has a first surface of a planar structure (i.e., an upper surface of the first lens 111 shown in fig. 1) and a second surface of a curved structure (i.e., a lower surface of the first lens 111 shown in fig. 1), and the second cylindrical lens has a third surface of a planar structure (i.e., an upper surface of the second lens 112 shown in fig. 1) and a fourth surface of a curved structure (i.e., a lower surface of the second lens 112 shown in fig. 1). The first surface is disposed facing the side where the collimating lens 200 is disposed, the fourth surface is disposed facing the side where the second surface is disposed, and the sum of the focal length of the fourth surface and the focal length of the second surface is 0, that is, when the focal length of the fourth surface is F, the focal length of the second surface is-F, so as to ensure that the first lens 111 and the second lens 112 are complementary lenses. Meanwhile, the distance between the center of the fourth surface and the center of the second surface in the first direction is 3-5 mm, so that the center of the fourth surface and the center of the second surface are ensured to be close to each other as much as possible, and the center of the fourth surface and the center of the second surface cannot touch each other in the process of relative displacement within a preset range. In this way, the first cylindrical lens and the second cylindrical lens are configured to better form the third light beam 13, which is offset from the second light beam 12 in the second direction, after the first light beam passes through the lens assembly 110.

In some examples, as shown in fig. 1, the second surface is a convex structure, and the fourth surface is a concave structure adapted to the convex structure, so that the first lens 111 may be a convex cylindrical lens, and the second lens 112 may be a concave cylindrical lens, so that one focal length of the first lens and the second lens 112 is positive, and the other focal length of the second lens is negative, thereby better ensuring that the first lens 111 and the second lens 112 are complementary lenses, and simultaneously effectively reducing the assembly difficulty of the lens assembly 110 through the shape complementary design of the convex cylindrical lens and the concave cylindrical lens. It is also possible for those skilled in the art to provide the first lens 111 as a concave cylindrical lens and the second lens 112 as a convex cylindrical lens according to actual needs, and in this case, the second surface is a concave structure and the fourth surface is a convex structure adapted to the concave structure.

In addition, as can be seen from the description of the above embodiments, when the relative position of the lens assembly 110 and the collimated laser beam in the second direction is changed, the dividing boundary between the first beam and the second beam is changed, and the energy ratio between the first laser spot and the second laser spot is changed. Specifically, as shown in fig. 1, when the lens assembly 110 moves leftwards, the energy ratio of the first laser spot gradually increases, and when the lens assembly 110 moves rightwards, the energy ratio of the first laser spot gradually decreases. Thus, the optical module 100 may further include a first adjusting mechanism (not shown) for driving the lens assembly 110 to move back and forth in the second direction. Therefore, the energy ratio between the first laser light spot and the second laser light spot can be adjusted through the arrangement of the first adjusting mechanism, so that the actual laser processing requirement can be better met. It will be appreciated that the lens assembly 110 may be integrally mounted on a mounting base, that is, the first lens 111 and the second lens 112 are both mounted on the mounting base, and the first adjusting mechanism may be used to drive the mounting base to move back and forth in the second direction by manual (e.g. screw driving) or automatic (e.g. motor driving or cylinder driving) means, so as to further realize the back and forth movement of the lens assembly 110 in the second direction.

In addition, when the first lens 111 and the second lens 112 are relatively displaced in the second direction, the distance between the first laser spot and the second laser spot is changed, so the optical module 100 may further include a second adjusting mechanism (not shown) for separately driving the first lens 111 to relatively move with respect to the second lens 112 in the second direction or separately driving the second lens 112 to relatively move with respect to the first lens 111 in the second direction. Therefore, the distance between the first laser light spot and the second laser light spot can be adjusted through the arrangement of the second adjusting mechanism, so that the actual laser processing requirement can be better met. It can be understood that the mounting base is further provided with a sliding base in the second direction, the sliding base can be used for mounting the first lens 111 or the second lens 112, and the second adjusting mechanism can specifically drive the sliding base to slide back and forth in the second direction relative to the mounting base in a manual manner (such as screwing driving) or an automatic manner (such as motor driving or air cylinder driving), so as to further realize the relative movement between the first lens 111 and the second lens 112 in the second direction.

In one embodiment, as shown in fig. 2, an embodiment of the present application provides a dual-spot laser system 1, where the dual-spot laser system 1 may specifically include a laser light source assembly 400, a collimator lens 200, a focusing lens 300, and the optical module 100 in the foregoing embodiment, where the laser light source assembly 400 is mainly used to provide an initial laser beam. The collimator lens 200 is mainly used for performing a collimation treatment on the initial laser beam to form a collimated laser beam irradiated along a first direction, and the collimated laser beam is divided into a first beam 11 and a second beam 12 along a second direction perpendicular to the first direction. The optical module 100 is partially located in the optical path of the first light beam 11, so that the first light beam 11 passes through the optical module 100 to form a third light beam 13 that is offset from the second light beam 12 in the second direction. The focusing lens 300 is mainly used for focusing the third light beam 13 and the second light beam 12 respectively to form a first laser spot and a second laser spot correspondingly.

It should be understood that, the above-mentioned use of the laser light source assembly 400 to provide the initial laser beam may refer to that the laser light source assembly 400 itself may emit the initial laser beam, where the laser light source assembly 400 may include a laser and a transmission fiber, where the laser may emit the initial laser beam with different wavelengths and powers according to specific applications, and the transmission fiber is used to directly transmit the initial laser beam emitted by the laser to the collimating lens 200, where the transmission fiber may be a special fiber with a special shape such as square, round, rectangular, hexagonal, or octagonal, so as to meet the actual installation needs of different dual-spot laser systems 1. The above-mentioned use of the laser light source assembly 400 to provide the initial laser beam may also refer to that the laser light source assembly 100 accesses the initial laser beam, where the laser light source assembly 100 does not include a laser, but includes only a transmission fiber to access the initial laser beam emitted by the laser. The collimating lens 200 can be coated with different films according to different wavelengths of the laser, and the focal length and caliber thereof can be determined according to the required focused laser spot size. The functions and structures of the optical module 100 are described in detail in the above embodiments, and are not described herein. In this way, in the dual-spot laser system 1 provided in the embodiment of the present application, by the arrangement of the optical module 100, the collimated laser beam coming out of the collimating lens 200 is converted from the first beam 11 and the second beam 12, which are originally integrated with each other in the second direction, into the third beam 13 and the second beam 12, which are mutually independent in the second direction, so that when the focusing lens 300 focuses the collimated laser beam, the third beam and the second beam can be focused respectively to correspondingly form the first laser spot and the second laser spot. In this way, the dual-spot laser system 1 provided in the embodiment of the application finally forms the first laser spot and the second laser spot which can respectively heat the welding spots at two ends of the electronic components, such as the chip, and the first laser spot and the second laser spot only cover the welding spots at the corresponding ends of the electronic components, but not cover the surfaces of the electronic components, thereby avoiding the problems of damage to the electronic components caused by laser radiation and repair or poor welding of the electronic components.

In some examples, as shown in fig. 2, the present dual-spot laser system 1 further includes a first mirror 510 and a first dichroic mirror 520, where the first mirror 510 may be specifically disposed in the optical paths of the third light beam 13 and the second light beam 12 at a 45 degree angle in an inclined manner, so as to change the optical paths of the third light beam 13 and the second light beam 12 by 90 degrees (i.e., change from the vertical direction up and down shown in fig. 2 to the horizontal direction right and left shown in fig. 2). The first dichroic mirror 520 may be disposed at an angle of 45 degrees in the optical paths of the third light beam 13 and the second light beam 12 after 90 degrees of change, for making the optical paths 13 of the third light beam 13 and the second light beam 12 change again by 90 degrees (i.e., change from the right-left horizontal direction shown in fig. 2 to the up-down direction shown in fig. 2 again). At this time, the focusing lens 300 may be specifically disposed in the optical path of the third light beam 13 and the second light beam 12 after the 90 degree change again, and perform focusing processing on the third light beam 13 and the second light beam 12, respectively, to form the first laser spot and the second laser spot correspondingly. In this way, the structural design of the first reflecting mirror 510 and the first dichroic mirror 520 can not affect the first laser spot and the second laser spot, and simultaneously make the dual-spot laser system 1 have various structural changes, so that other functions of the dual-spot laser system 1 can be better added later.

In some examples, as shown in fig. 2, the dual-spot laser system 1 further includes an infrared temperature measurement component 600 or a machine vision component 700, where the first dichroic mirror 520 is specifically further configured to transmit high-temperature infrared light and visible light on a side of the focusing lens 300, and thus, the infrared temperature measurement component 600 or the machine vision component 700 may be disposed on a side of the first dichroic mirror 520 away from the focusing lens in the first direction, so as to receive the high-temperature infrared light through the infrared temperature measurement component 600 for temperature monitoring, or receive the visible light through the machine vision component 700 for visual monitoring. In this way, the real-time monitoring of the current laser processing temperature can be realized through the setting of the infrared temperature measuring component 600, and meanwhile, the output power of the laser light source component 400 can be adjusted in real time according to the current laser processing temperature, so that the current laser processing temperature is always kept in the preset temperature interval, namely, the constant temperature mode of the laser processing point is realized. Or the visual monitoring of the laser processing process can be realized through the setting of the machine vision component 700, so that when the processing effects of the first laser light spot and the second laser light spot on the processing object are inconsistent, the energy of the first laser light spot and the energy of the second laser light spot are paired and redistributed, and the processing effects of the first laser light spot and the second laser light spot are ensured to be consistent. It will be appreciated that the infrared temperature measurement assembly 600 may specifically include an infrared collecting lens 610 and a high-speed closed-loop pyrometer 620, where the infrared collecting lens 610 may be configured to receive a signal of high-temperature infrared light and collect the signal into a sensor detection surface of the high-speed closed-loop pyrometer 620, and the high-speed closed-loop pyrometer 620 is configured to adjust the output power of the laser light source assembly 400 in real time by acquiring a real-time temperature, using a closed-loop algorithm, so as to implement a constant temperature control on a laser processing point. The machine vision assembly 700 may specifically include a visible light imaging lens 710 and a CCD image sensor 720, wherein the visible light imaging lens 710 is primarily configured to receive the visible light to image a working area on the CCD image sensor 720. The CCD image sensor 720 is mainly used to recognize and detect the processing state of the processing object in the working surface.

In some examples, as shown in fig. 2, the present dual-spot laser system 1 further includes a second dichroic mirror 530, an infrared thermometry component 600, and a machine vision component 700, where the first dichroic mirror 530 is specifically further configured to transmit high-temperature infrared light and visible light on the side of the focusing lens 300. The second dichroic mirror 530 is disposed at a 45 degree incline to a side of the first dichroic mirror 520 away from the focusing lens 300 in the first direction for transmitting the high temperature infrared light, and causes a 90 degree change in the optical path of the visible light (i.e., a change from the lower-upper vertical direction shown in fig. 2 to the right-left horizontal direction shown in fig. 2). The infrared temperature measuring assembly 600 is disposed on a side of the second dichroic mirror 530 away from the first dichroic mirror 520 in the first direction, for receiving the high temperature infrared light for temperature monitoring. The machine vision assembly 700 is positioned in the light path after the visible light is changed by 90 degrees for receiving the visible light for visual monitoring. In this way, the second dichroic mirror 530 may be set, so that the dual-spot laser system 1 may be additionally provided with the infrared temperature measuring component 600 and the machine vision component 700 at the same time, so as to realize real-time monitoring of the current laser processing temperature through the setting of the infrared temperature measuring component 600, and simultaneously, may also adjust the output power of the laser light source component 400 in real time according to the current laser processing temperature, so as to ensure that the current laser processing temperature is always kept in the preset temperature interval, that is, realize the constant temperature mode of the laser processing point. And through the setting of the machine vision component 700, the visual monitoring of the laser processing process is realized, so that when the processing effects of the first laser light spot and the second laser light spot on the processing object are inconsistent, the energy of the first laser light spot and the energy of the second laser light spot are paired and redistributed, and the processing effects of the first laser light spot and the second laser light spot are ensured to be consistent.

In some examples, as shown in fig. 2, the dual-spot laser system 1 further includes a second mirror 540, where the second mirror 540 may be disposed at a 45 degree angle in the optical path of the visible light after the 90 degree change, so as to make the optical path of the visible light change again by 90 degrees. The machine vision assembly 700 may be specifically located in the optical path after the visible light is changed by 90 degrees again, and is used for receiving the visible light for visual monitoring. In this way, the machine vision component 700, the infrared temperature measurement component 600 and the laser light source component 700 can be sequentially arranged side by the arrangement of the second reflecting mirror 540, so that the structural design of the dual-spot laser system 1 becomes more compact.

In some examples, during the heating process of the dual-spot laser system 1 on the welding spots on two sides of the electronic component, the machine vision component 700 is used to monitor the heights of the welding spots on two sides of the electronic component, so that when the heights of the welding spots on any side are greater than those of the welding spots on the other side, the relative positions of the lens component 110 and the collimated laser beam in the second direction are adjusted, so that the energy of the first laser spot and the energy of the second laser spot are paired and redistributed, and the heights of the welding spots on two sides of the electronic component are ensured to be consistent. Before the dual-spot laser system 1 heats welding spots on two sides of an electronic component, the size of the welding spots on two sides of the electronic component can be monitored through the machine vision component 700, so that when the size of the welding spot on any side is larger than that of the welding spot on the other side, the energy of the first laser spot and the energy of the second laser spot are paired and redistributed through adjusting the relative position of the lens component 110 and the collimated laser beam in the second direction, and the processing effect of the dual-spot laser system 1 on the welding spots on two sides of the electronic component is ensured to be consistent.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structural changes made by the description of the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the application.

Claims (10)

1. The optical module is characterized by being applied to a double-spot laser system, wherein the double-spot laser system comprises a collimating lens and a focusing lens, the collimating lens is used for collimating an initial laser beam to form a collimated laser beam irradiated along a first direction, the focusing lens is used for focusing the collimated laser beam to form a corresponding laser spot, and the collimated laser beam is divided into a first beam and a second beam along a second direction perpendicular to the first direction;

The optical module comprises a lens assembly, wherein the lens assembly comprises a first lens and a second lens which are sequentially arranged in the first direction, the first lens and the second lens are arranged in a staggered manner in the second direction, and the first lens and the second lens are mutually complementary lenses;

The lens assembly is partially positioned in the optical path of the first light beam such that the first light beam, after passing through the lens assembly, forms a third light beam that is offset from the second light beam in the second direction.

2. The optical module of claim 1, wherein the first lens is a first cylindrical lens and the second lens is a second cylindrical lens;

The first cylindrical lens is provided with a first surface with a planar structure and a second surface with a curved surface structure, and the second cylindrical lens is provided with a third surface with a planar structure and a fourth surface with a curved surface structure;

The first surface faces one side where the collimating lens is located, the fourth surface faces one side where the second surface is located, the sum of the focal length of the fourth surface and the focal length of the second surface is 0, and the distance between the center of the fourth surface and the center of the second surface in the first direction is 3-5 mm.

3. The optical module of claim 2, wherein the second surface is a convex structure and the fourth surface is a concave structure that mates with the convex structure; or alternatively, the first and second heat exchangers may be,

The second surface is a concave structure, and the fourth surface is a convex structure matched with the concave structure.

4. An optical module as claimed in claim 2 or 3, wherein the optical module further comprises a first adjustment mechanism for urging the lens assembly back and forth in the second direction.

5. An optical module as claimed in claim 2 or 3, further comprising a second adjustment mechanism for separately actuating the first lens to move relative to the second lens in the second direction or for separately actuating the second lens to move relative to the first lens in the second direction.

6. A dual-spot laser system comprising a laser source assembly, a collimating lens, a focusing lens, and an optical module as claimed in any one of claims 1-5, wherein,

The laser source assembly is used for providing an initial laser beam;

The collimating lens is used for carrying out collimation treatment on the initial laser beam to form a collimated laser beam irradiated along a first direction, and the collimated laser beam is divided into a first beam and a second beam along a second direction perpendicular to the first direction;

The optical module is partially positioned in the optical path of the first light beam and is used for forming a third light beam deviating from the second light beam in the second direction after the first light beam passes through the lens assembly;

and the focusing lens is used for respectively focusing the third light beam and the second light beam so as to correspondingly form a first laser spot and a second laser spot.

7. The dual spot laser system of claim 6, further comprising a first mirror and a first dichroic mirror, wherein,

The first reflecting mirror is obliquely arranged in the light paths of the third light beam and the second light beam at an angle of 45 degrees and is used for enabling the light paths of the third light beam and the second light beam to be changed at an angle of 90 degrees;

the first dichroic mirror is obliquely arranged in the light path of the third light beam and the second light beam after 90 degrees change at an angle of 45 degrees, and is used for enabling the light paths of the third light beam and the second light beam to be changed again at 90 degrees;

The focusing lens is arranged in the light path of the third light beam and the second light beam after the 90-degree change again, and focuses the third light beam and the second light beam respectively to form a first laser spot and a second laser spot correspondingly.

8. The dual spot laser system of claim 7, further comprising an infrared thermometry component or a machine vision component, wherein,

The first dichroic mirror is further used for transmitting high-temperature infrared light and visible light on one side where the focusing lens is located;

The infrared temperature measuring component or the machine vision component is positioned at one side of the first dichroic mirror away from the focusing lens in the first direction and is used for receiving the high-temperature infrared light for temperature monitoring or receiving the visible light for visual monitoring.

9. The dual spot laser system of claim 7, further comprising a second dichroic mirror, an infrared thermometry component, and a machine vision component, wherein,

The first dichroic mirror is further used for transmitting high-temperature infrared light and visible light on one side where the focusing lens is located;

The second dichroic mirror is obliquely arranged at 45 degrees on one side of the first dichroic mirror away from the focusing lens in the first direction, and is used for transmitting the high-temperature infrared light and enabling the optical path of the visible light to be changed by 90 degrees;

The infrared temperature measuring component is arranged on one side of the second dichroic mirror far away from the first dichroic mirror in the first direction and is used for receiving the high-temperature infrared light for temperature monitoring;

The machine vision assembly is positioned in the light path after the visible light is changed by 90 degrees and is used for receiving the visible light for visual monitoring.

10. The dual spot laser system of claim 9, further comprising a second mirror, wherein,

The second reflecting mirror is obliquely arranged in the light path of the visible light after 90 degrees of change, and is used for enabling the light path of the visible light to be changed again by 90 degrees;

The machine vision assembly is positioned in the light path after the visible light is changed by 90 degrees again and is used for receiving the visible light for visual monitoring.