Packaging structure of optoelectronic device and optical module

Abstract

The embodiment of the utility model provides a packaging structure of a photoelectronic device and an optical module, relates to the technical field of photoelectronic devices, and aims at solving the problems that in the packaging structure, the coupling difficulty of the photoelectronic device and a coupling lens is large, and the coupling process is tedious. The packaging structure comprises a packaging tube shell, an acting assembly and a coupling lens. Wherein the packaging tube shell is of a square shell structure and is provided with an accommodating cavity and an optical window hole communicated with the accommodating cavity; the acting assembly is arranged in the containing cavity and comprises a photoelectronic device, and the photoelectronic device is used for transmitting or receiving the laser beam passing through the light window hole. The coupling lens is arranged on the packaging tube shell and is opposite to the light window hole; the coupling lens is used to adjust a spot of the laser beam passing through the light aperture. The packaging structure can be applied to the optical module.

Description

Technical Field

[0001] The present application relates to the technical field of optoelectronic devices, and in particular to a packaging structure of an optoelectronic device and an optical module. Background Art

[0002] Transmitter Optical Subassembly (TOSA) is one of the key components in an optical module and is used to convert electrical signals into optical signals.

[0003] In a light emitting component using butterfly packaging provided in the related art, a packaging tube shell, a laser and a coupling lens are included. The packaging tube shell is a square shell structure with a receiving cavity, and a light window hole is arranged on the side wall of the square shell structure, and the receiving cavity is connected to the outside through the light window hole. A transparent light window plate for blocking the light window hole is also arranged on the packaging tube shell. The laser and the coupling lens are arranged in the receiving cavity and fixedly mounted on the bottom plate in the packaging tube shell. When the light emitting component is working, the laser is used to generate a laser beam projected to the coupling lens, and the coupling lens is used to adjust the pattern spot of the laser beam, and the laser beam after the pattern spot adjustment is projected to the light window hole, and is emitted through the transparent light window plate in the light window hole.

[0004] In the above-mentioned light emitting components provided by the related art, the coupling between the laser and the coupling lens needs to adopt an active coupling method, which is difficult to couple and the coupling process is complicated. Utility Model Content

[0005] The embodiments of the present application provide a packaging structure of an optoelectronic device and an optical module, which are used to improve the problem that the coupling between the optoelectronic device and the coupling lens in the packaging structure is difficult and the coupling process is complicated.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a packaging structure of an optoelectronic device, the packaging structure comprising a packaging tube shell, an active component and a coupling lens. The packaging tube shell is a square shell structure having a receiving cavity and an optical window hole penetrating the receiving cavity. The active component is arranged in the receiving cavity, and comprises an optoelectronic device, and the optoelectronic device is used to emit or receive a laser beam passing through the optical window hole. The coupling lens is mounted on the packaging tube shell and is opposite to the optical window hole; the coupling lens is used to adjust the pattern spot of the laser beam passing through the optical window hole.

[0008] In the packaging structure of the optoelectronic device provided in the embodiment of the present application, the coupling lens is installed on the packaging tube shell. With such a design, when coupling the coupling lens and the optoelectronic device (such as a laser and a detector), optical alignment is sufficient without the need for active coupling, thereby simplifying the coupling process and reducing the difficulty of coupling.

[0009] In some embodiments, the packaging structure further includes a mounting lens barrel mounted on the packaging tube shell, at least a portion of the mounting lens barrel is located in the light window hole, and has a lens barrel cavity connected to the accommodating cavity; the coupling lens is mounted in the lens barrel cavity. Such a design facilitates the installation of the coupling lens and the packaging tube shell, and is conducive to adjusting the position of the coupling lens relative to the light window hole and the accommodating cavity, thereby facilitating the coupling lens and the optoelectronic device.

[0010] In some embodiments, the mounting lens barrel extends into the accommodating cavity through the optical window hole, and the coupling lens is disposed at the portion of the mounting lens barrel located in the accommodating cavity. Such a design can make the coupling lens closer to the optoelectronic device, which can improve the coupling quality of the coupling lens to the optoelectronic device on the one hand, and on the other hand, can help reduce the optical performance requirements for the coupling lens, thereby helping to reduce the size of the coupling lens, and further helping to reduce the overall size of the packaging structure.

[0011] In some embodiments, the mounting lens barrel has an outer peripheral surface, and a portion of the outer peripheral surface contacts the hole wall of the light window hole; the hole wall of the light window hole and the outer peripheral surface of the mounting lens barrel are connected by welding, threaded structure, connecting glue or interference fit. Such a design can facilitate the connection between the mounting lens barrel and the light window hole, and can be connected in a variety of different ways to adapt to different packaging processes.

[0012] In some embodiments, the mounting lens barrel has an outer peripheral surface, and the mounting lens barrel also includes an outer peripheral protrusion disposed on the outer peripheral surface, the outer peripheral protrusion contacts the outer side surface of the packaging tube shell; the outer peripheral protrusion and the packaging tube shell are connected by welding or connecting glue. Such a design is conducive to achieving airtight packaging of the packaging structure when the mounting lens barrel is connected to the light window hole; and is conducive to adjusting the relative position of the mounting lens barrel with respect to the light window hole, that is, the position of the coupling lens with respect to the light window hole.

[0013] In some embodiments, the peripheral protrusion is an annular structure surrounding the lens barrel cavity on the outer peripheral surface, and the connection position between the peripheral protrusion and the packaging tube shell surrounds the outer periphery of the light window. Such a design can achieve airtight packaging of the packaging structure when the lens barrel is installed and connected to the light window.

[0014] In some embodiments, there is a gap between the optical window and the mounting lens barrel. Such a design reserves space for adjusting the position of the mounting lens barrel relative to the optical window, which is beneficial for adjusting the relative position of the coupling lens and the optoelectronic device when they are coupled, thereby improving the coupling accuracy.

[0015] In some embodiments, the coupling lens is installed in the optical window hole. Such a design can simplify the structure on the one hand, and reduce the overall size of the packaging structure on the other hand.

[0016] In some embodiments, the packaging structure is a light emitting component or a light receiving component; in the light emitting component, the optoelectronic device in the active component includes a laser; in the light receiving component, the optoelectronic device in the active component includes a detector.

[0017] The packaging structure of the optoelectronic device provided in the embodiment of the present application can be either a light emitting component or a light receiving component, and the same technical effect can be achieved when the packaging structure is a light emitting component or a light receiving component.

[0018] In some embodiments, the active component includes a plurality of optoelectronic devices arranged in an array.

[0019] The active component also includes a wave splitting and combining device and a lens array. The wave splitting and combining device includes multiple first coupling ends and one second coupling end, and the lens array includes multiple sub-lenses. The optoelectronic device, the sub-lenses and the first coupling end are arranged in a one-to-one correspondence, and the sub-lenses are used to adjust the laser beam mode spot between the optoelectronic device and the first coupling end; the second coupling end is coupled to the coupling lens.

[0020] The packaging structure of the optoelectronic device provided in the embodiment of the present application can be applicable to a multi-channel architecture, and the same technical effect can be achieved in the multi-channel architecture solution.

[0021] In some embodiments, the package shell further includes an external component, which is disposed in a portion of the package shell opposite to the light window hole; the external component includes a plurality of conductive pins, which extend from the outside of the accommodating cavity through the package shell into the accommodating cavity; the portion of the conductive pin located in the accommodating cavity is electrically connected to the active component. Such a design is conducive to miniaturization of the package structure.

[0022] In the second aspect, an embodiment of the present application also provides an optical module, which includes an optical fiber interface, a signal processing circuit and a packaging structure as described in the embodiment of the first aspect; the packaging structure is connected to the optical signal of the optical fiber interface and is electrically connected to the signal processing circuit.

[0023] The technical effect that can be achieved by the optical module provided in the embodiment of the present application is the same as the technical effect that can be achieved by the packaging structure in any of the above embodiments, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a light emitting component provided for related technology;

[0025] Figure 2A schematic diagram of the structure of a light emitting assembly (excluding a tube shell cover) provided in an embodiment of the present application;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure of the optical transmission component after the lens barrel and coupling lens are hidden and installed;

[0027] Figure 4 for Figure 2 Schematic diagram of the structure of the components in action;

[0028] Figure 5 for Figure 2 A cross-sectional view of the light emitting assembly in the AA' direction;

[0029] Figure 6 for Figure 5 Schematic diagram of the structure in which the lens barrel and coupling lens are installed;

[0030] Figure 7 A schematic diagram of the structure of another optical transmission component provided in an embodiment of the present application;

[0031] Figure 8 A schematic diagram of the structure of another optical transmission component provided in an embodiment of the present application;

[0032] Fig. 9 A schematic diagram of the structure of another optical transmission component provided in an embodiment of the present application;

[0033] Fig.10 A schematic diagram of the structure of an optical module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] Transmitter Optical Subassembly (TOSA) is one of the key components in an optical module and is used to convert electrical signals into optical signals.

[0035] Figure 1 A schematic diagram of the structure of a light emitting component 1 provided for related technology, such as Figure 1As shown, the optical emission component 1 adopts a butterfly package, including a package tube shell 2, a laser 6 and a coupling lens 5. The package tube shell 2 is a square shell structure with a receiving cavity 7, and a light window hole 3 is arranged on the side wall of the square shell structure, and the light window hole 3 is connected with the receiving cavity 7. The package tube shell 2 is also provided with a transparent light window plate 4 for blocking the light window hole 3, such as a sapphire glass light window plate. The laser 6 and the coupling lens 5 are arranged in the receiving cavity 7 and fixedly mounted on the bottom plate 81 in the package tube shell 2. When the optical emission component 1 is working, the laser 6 is used to generate a laser beam projected to the coupling lens 5, and the coupling lens 5 is used to adjust the pattern spot of the laser beam, and project the laser beam after the pattern spot is adjusted to the light window hole 3, and emit through the transparent light window plate 4 in the light window hole 3.

[0036] In the above-mentioned optical transmission component 1 provided by the relevant technology, the coupling between the laser 6 and the coupling lens 5 needs to adopt an active coupling method. The active coupling process includes: connecting a pigtail coupled to the optical window hole 3 on the outside of the packaging tube shell 2, and the pigtail is connected to the optical power meter; then controlling the laser 6 to power on to generate a laser beam, and the laser beam emitted by the laser 6 enters the optical power meter after passing through the coupling lens 5 and the pigtail; by observing the optical power value detected by the optical power meter, the relative position relationship between the laser 6 and the coupling lens 5 is adjusted. During the adjustment process, the position with larger optical power is generally selected to fix the laser 6 and the coupling lens 5, thereby realizing the coupling of the laser 6 and the coupling lens 5.

[0037] It can be seen from the above description that in the process of coupling the laser 6 and the coupling lens 5 in the optical emitting component 1 by active coupling, it is necessary to connect an optical power meter to monitor the optical power; and because the adjustment space and tolerance range between the laser 6 and the coupling lens 5 are small (both are at the micron level), slight movements will affect the optical power; thus, the coupling of the laser 6 and the coupling lens 5 is more difficult and the coupling process is more complicated.

[0038] In addition, the coupling lens 5 is disposed in the accommodating cavity 7, which will occupy the space of the accommodating cavity 7, resulting in a larger space of the accommodating cavity 7. In particular, when the coupling lens 5 adopts a double-lens solution, the occupied space of the accommodating cavity 7 will be further increased, thereby making the overall size of the optical emitting component 1 larger, affecting the miniaturization of the device.

[0039] Based on this, an embodiment of the present application provides a packaging structure of an optoelectronic device to improve the above-mentioned problem.

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0041] In the following, in the embodiments of the present application, the terms "first", "second", etc. are only used for convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0042] In the embodiments of the present application, "up", "down", "left" and "right" are not limited to being defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms may be relative concepts. They are used for relative description and clarification, and may change accordingly according to changes in the orientation of the components placed in the drawings.

[0043] In the embodiments of the present application, unless the context requires otherwise, throughout the specification and claims, the term "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "exemplarily" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present application. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0044] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0045] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0046] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0047] In the embodiments of the present application, exemplary embodiments are described with reference to cross-sectional views and / or plan views and / or equivalent circuit diagrams as idealized exemplary drawings. In the drawings, the thickness of the layers and regions is magnified for clarity. Therefore, it is conceivable that the shape changes relative to the drawings are caused by, for example, manufacturing technology and / or tolerances. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations caused by, for example, manufacturing. For example, an etched region shown as a rectangle will generally have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0048] The embodiment of the present application provides a packaging structure of an optoelectronic device (hereinafter referred to as a packaging structure), which can be either an optical transmitter assembly or an optical receiver assembly (Receiver Optical Subassembly, abbreviated as ROSA). This article first takes the optical transmitter assembly 1 as an example to exemplify the packaging structure.

[0049] The present application embodiment provides a light emitting component, such as Figures 2 to 5 As shown, the optical emitting component 1 includes a packaging tube shell 2, an active component 10, an external component 11, a mounting lens barrel 9 and a coupling lens 5, wherein the packaging tube shell 2 can be made of metal material and is a square shell structure with an accommodating cavity 7, such as a cube or rectangular shell structure.

[0050] Exemplarily, the package tube shell 2 includes a tube shell body 8 and a tube shell cover (not shown in the figure), such as Figure 2 and Figure 3 As shown, the tube shell body 8 surrounds the accommodating cavity 7 with a top opening at the top, and includes a bottom plate 81, a first side plate 82, a second side plate 83, a third side plate 84 and a fourth side plate 85. The bottom plate 81 is a square plate-like structure parallel to the first direction X and the second direction Y, and the side edges of the square plate-like structure are respectively parallel to the first direction X and the second direction Y. The first side plate 82, the second side plate 83, the third side plate 84 and the fourth side plate 85 are all erected on one side of the bottom plate 81 along the third direction Z; the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0051] Please continue to refer to Figure 3, the first side plate 82 and the third side plate 84 are arranged opposite to each other in the first direction X, and the second side plate 83 and the fourth side plate 85 are arranged opposite to each other in the second direction Y; that is, the first side plate 82 and the third side plate 84 are parallel to the second direction Y and the third direction Z, and the second side plate 83 and the fourth side plate 85 are parallel to the first direction X and the third direction Z. The first side plate 82, the third side plate 84, the second side plate 83 and the fourth side plate 85 are respectively arranged on the four side edges of the bottom plate 81, and extend on the bottom plate 81 around the edge of the bottom plate 81 to form a square closed structure around the bottom plate 81.

[0052] Through the above description of the tube shell body 8 and combined with Figure 2 and Figure 3 It can be seen that in the tube shell body 8, the bottom plate 81, the first side plate 82, the second side plate 83, the third side plate 84 and the fourth side plate 85 surround a accommodating cavity 7, and the top end of the first side plate 82, the second side plate 83, the third side plate 84 and the fourth side plate 85 away from the bottom plate 81 surrounds a top opening to form, and the accommodating cavity 7 is connected to the outside through the top opening.

[0053] When the tube shell cover is assembled with the tube shell body 8, the edge of the tube shell cover contacts the top ends of the first side plate 82, the second side plate 83, the third side plate 84 and the fourth side plate 85 away from the bottom plate 81, respectively, thereby blocking the top opening of the accommodating cavity 7, so that the tube shell cover and the tube shell body 8 are combined to form a closed accommodating cavity 7.

[0054] Please continue to refer to Figure 3 The package tube shell 2 is also provided with a light window hole 3, which is provided on the first side plate 82 and penetrates the first side plate 82 along the first direction X, and the accommodating cavity 7 is connected to the outside through the light window hole 3. The shape of the light window hole 3, that is, the shape in the cross section perpendicular to the first direction X, can be circular, square, triangular or polygonal. The shape and size of the light window hole 3 can be adaptively designed according to the shape and size of the mounting lens barrel 9 and the coupling lens 5. In this embodiment, the light window hole 3 is a circular hole with a diameter equal to the first size.

[0055] like Figure 2 and Figure 3 As shown, the active component 10 is disposed in the accommodating cavity 7 and includes an optoelectronic device. Figure 4 As shown, for the light emitting component 1, the optoelectronic device is a laser 6, and the laser 6 can be a device capable of generating a laser beam, such as a laser diode (Laser Diode, abbreviated as LD), a vertical-cavity surface-emitting laser (Vertical-Cavity Surface-Emitting Laser, abbreviated as VCSEL) or an edge-emitting laser (Edge-Emitting Laser, abbreviated as EEL).

[0056] Please continue to refer to Figure 4 In the light emitting assembly 1, the active assembly 10 may further include a refrigerator 101, a ceramic substrate 102, a backlight detector 104 and a thermistor 103. The refrigerator 101 is fixedly arranged on the bottom plate 81, the ceramic substrate 102 is mounted on the top of the refrigerator 101 away from the bottom plate 81, and the laser 6, the backlight detector 104 and the thermistor 103 are all arranged on the top side of the ceramic substrate 102 away from the refrigerator 101. The laser 6 located in the accommodating cavity 7 is arranged opposite to the light window hole 3, and is used to generate a laser beam irradiated toward the light window hole 3.

[0057] In some embodiments, Figure 5 As shown, the bottom plate 81 in the tube shell body 8 is provided with a groove at a position close to the light window hole 3, that is, the bottom plate 81 includes a first part 811 and a second part 812 along the first direction X, the first part 811 is close to the first side plate 82 where the light window hole 3 is located relative to the second part 812, and the second part 812 is far away from the first side plate 82 relative to the first part 811. In the third direction Z, the height of the second part 812 is higher than the height of the first part 811; that is, the bottom plate 81 is designed with different heights and is divided into two parts with different heights. Relative to the light window hole 3, the first part 811 is lower than the bottom edge of the light window hole 3, and the second part 812 is lower than the top edge of the light window hole 3. The action component 10 is arranged on the second part 812. With such a design, the setting height of the light window hole 3 can be reduced, which is conducive to reducing the height of the tube shell body 8, and further conducive to reducing the overall size of the packaging structure.

[0058] Please continue to refer to Figure 2 and Figure 3 The optical emission component 1 also includes an external component 11, which includes a plurality of conductive pins 12. The plurality of conductive pins 12 in the external component 11 are all arranged on the tube shell body 8 opposite to the light window hole 3, that is, arranged on the third side plate 84. The conductive pins 12 penetrate the third side plate 84 along the first direction X and extend into the interior of the accommodating cavity 7. In the case where the package tube shell 2 is made of metal material, an insulating sleeve is also arranged between the conductive pins 12 and the third side plate 84. The insulating sleeve can be made of insulating materials such as glass or ceramics. When in use, it is sleeved on the outer periphery of the conductive pins 12 to achieve insulation matching between the conductive pins 12 and the third side plate 84. The portion of the conductive pins 12 located inside the accommodating cavity 7 is electrically connected to the active component 10, and the portion located outside the accommodating cavity 7 is electrically connected to an external device that the optical emission component 1 needs to be electrically connected to, so as to achieve external connection of the optical emission component 1.

[0059] In some embodiments, the plurality of conductive pins 12 in the external component 11 may be disposed on the housing body 8 located on one side or both sides of the light window 3 , that is, disposed on at least one of the second side plate 83 and the fourth side plate 85 .

[0060] In some embodiments, the conductive pin 12 may be formed with a pad on the outside of the tube shell body 8, and the external device that the optical emission component 1 needs to be electrically connected to is electrically connected to the pad through a metal connecting wire or a flexible printed circuit board (Flexible Printed Circuit Board, abbreviated as FPC).

[0061] like Figure 2 and Figure 5 As shown, the optical transmission assembly 1 provided in the embodiment of the present application also includes a mounting lens barrel 9 and a coupling lens 5. Figure 6 The mounting lens barrel 9 can be made of metal material, including a lens barrel body 92 and a peripheral protrusion 93. The lens barrel body 92 is a cylindrical structure with the lens barrel axis L1 as the central axis, and the diameter is the second length, and the second length is less than the first length. The lens barrel body 92 has a lens barrel cavity 91 with the lens barrel axis L1 as the central axis, and the lens barrel cavity 91 penetrates the mounting lens barrel 9 along the direction where the lens barrel axis L1 is located. The lens barrel body 92 includes an outer peripheral surface 94 extending around the lens barrel axis L1. The peripheral protrusion 93 is arranged on the outer peripheral surface 94 and extends from the outer peripheral surface 94 in a direction perpendicular to the lens barrel axis L1.

[0062] In this embodiment, the peripheral protrusion 93 is an annular protrusion extending around the lens barrel axis L1. In some other embodiments, the peripheral protrusion 93 may include at least two sub-protrusions spaced apart around the lens barrel axis L1 on the peripheral surface 94, and the sub-protrusions extend from the peripheral surface 94 in a direction perpendicular to the lens barrel axis L1.

[0063] The coupling lens 5 is installed in the lens barrel cavity 91 of the mounting lens barrel 9, and the coupling lens 5 and the mounting lens barrel 9 can be connected by welding, bonding with a connecting glue, or card slot engagement. In this embodiment, the optical emission assembly 1 adopts a single-lens light converging solution, and the coupling lens 5 only includes a converging lens, and the outer peripheral edge of the converging lens has a metal ring, and the converging lens is fixed to the mounting lens barrel 9 by welding the metal ring and the mounting lens barrel 9.

[0064] When the lens barrel 9 and the package shell 2 are assembled, the lens barrel body 92 in the lens barrel 9 extends into the light window hole 3, and partially extends into the accommodating cavity 7 through the light window hole 3. The lens barrel axis L1 is parallel to the first direction X, and the peripheral protrusion 93 in the lens barrel 9 is located outside the light window hole 3 and contacts the package shell 2 (first side plate 82) on the periphery of the light window hole 3. The lens barrel 9 is connected to the package shell 2 by the peripheral protrusion 93, so as to achieve installation and fixation with the package shell 2. The peripheral protrusion 93 and the package shell 2 can be connected by welding or bonding with a connecting glue, etc., and the airtightness of the packaging structure can be ensured by adopting a method in which the connection position surrounds the light window hole 3.

[0065] In this embodiment, the peripheral protrusion 93 and the first side plate 82 are connected by resistance welding, and the connection position extends around the outer periphery of the light window hole 3 .

[0066] It can be seen from the above description that the first length is greater than the second length, that is, the size of the lens barrel body 92 in the mounting lens barrel 9 is smaller than the size of the light window 3. Therefore, when the mounting lens barrel 9 and the packaging tube shell 2 are assembled, Figure 5 As shown, there is a certain distance of gap between the lens barrel body 92 extending into the light window hole 3 and the light window hole 3, thereby reserving space for adjusting the position of the lens barrel 9, which is beneficial for adjusting the relative positions of the lens barrel 9 and the packaging tube shell 2 when they are assembled together, thereby facilitating the coupling alignment of the laser 6 and the coupling lens 5.

[0067] After the mounting barrel 9 and the package tube shell 2 are assembled, the coupling lens 5 in the mounting barrel 9 is located at a position opposite to the light window hole 3, and the laser beam emitted by the laser 6 can be emitted through the coupling lens 5. In the direction aligned with the light window hole 3, that is, in the first direction X, the coupling lens 5 can be located in the light window hole 3, in the accommodating cavity 7, or outside the accommodating cavity 7. The position of the coupling lens 5 in the direction aligned with the light window hole 3 can be achieved by controlling the mounting position in the mounting barrel 9.

[0068] In this embodiment, if Figure 5 As shown, the coupling lens 5 is located in the accommodating cavity 7. Such a design can make the coupling lens 5 closer to the laser 6. On the one hand, it can improve the coupling quality of the coupling lens 5 to the laser 6. On the other hand, it is beneficial to reduce the optical performance requirements for the coupling lens 5, thereby helping to reduce the size of the coupling lens 5, and further helping to reduce the overall size of the packaging structure.

[0069] In the optical transmission component 1 provided in the embodiment of the present application, the coupling lens 5 is installed on the packaging tube shell 2 through the mounting tube 9. With such a design, when coupling the coupling lens 5 and the laser 6, optical alignment is sufficient without the need for active coupling, thereby reducing the difficulty of coupling and simplifying the coupling process.

[0070] In the above embodiment, the light emitting assembly 1 adopts a single-lens light converging solution, but the light emitting assembly 1 provided in the embodiment of the present application is not limited thereto. For example, in some embodiments, the light emitting assembly 1 may adopt a double-lens parallel light solution, and the coupling lens 5 includes a collimating lens and a converging lens; in this case, the collimating lens and the converging lens are both disposed in the lens barrel cavity 91 where the lens barrel 9 is mounted. The coupling lens 5 may also include an isolator between the collimating lens and the converging lens, and in this case, the isolator is also disposed in the lens barrel cavity 91 where the lens barrel 9 is mounted.

[0071] In the above embodiment, the coupling lens 5 is mounted on the package tube shell 2 through the mounting lens barrel 9, the mounting lens barrel 9 is mounted on the package tube shell 2 through the peripheral protrusion 93, and there is a certain distance between the lens barrel body 92 and the light window hole 3. However, the optical transmission component 1 provided in the embodiment of the present application is not limited to this.

[0072] For example, in some embodiments, the first length is equal to the second length, and the outer peripheral surface 94 of the mounting lens barrel 9 is in contact with the wall of the light window hole 3 .

[0073] For example, in other embodiments, Figure 7 As shown, the first length is equal to the second length, and the outer peripheral surface 94 of the mounting lens barrel 9 contacts the hole wall of the light window hole 3. The mounting lens barrel 9 and the packaging tube shell 2 are fixed to each other through the connection between the outer peripheral surface 94 and the hole wall of the light window hole 3, and the outer peripheral surface 94 and the hole wall of the light window hole 3 can be connected by welding, interference fit, connection glue bonding, slot clamping or threaded connection. In this case, the peripheral protrusion 93 can play a positioning function, and the peripheral protrusion 93 may not be set.

[0074] For example, in some other embodiments, Figure 8 As shown, the coupling lens 5 can be directly installed in the light window hole 3, and the coupling lens 5 and the wall of the light window hole 3 can be connected by bonding with a connecting glue or welding.

[0075] In some embodiments, the optical transmission component 1 may be a multi-channel architecture, such as Fig. 9As shown, the action component 10 includes a plurality of lasers 6 arranged in an array, for example, a plurality of lasers 6 arranged in a one-dimensional array along the second direction Y. The action component 10 also includes a wave splitting and combining device 13 and a lens array 14, wherein the wave splitting and combining device 13 can be an array waveguide grating combiner, an adiabatic coupler or a directional coupler, etc., including a plurality of first coupling ends 131 and a second coupling end 132, the plurality of first coupling ends 131 are arranged in a one-to-one correspondence with the plurality of lasers 6, and a second coupling end 132 is coupled with the coupling lens 5. The lens array 14 includes a plurality of sub-lenses 141, the plurality of sub-lenses 141 are arranged in a one-to-one correspondence with the plurality of lasers 6, and are located between the corresponding lasers 6 and the first coupling end 131, and are used to achieve coupling between the laser 6 and the corresponding first coupling end 131.

[0076] In the case where the optical emitting component 1 adopts a multi-channel architecture, the wave splitter / combiner 13 can be omitted in the active component 10, and coupling lenses 5 corresponding to the multiple lasers 6 are provided. Accordingly, the package tube shell 2 is provided with light windows 3 corresponding to the coupling lenses 5. When working, the laser beam emitted by the laser 6 passes through the corresponding sub-lens 141 and the coupling lens 5 and then emits. The assembly relationship between the coupling lens 5, the package tube shell 2, and the light window 3 can be referred to the above description, and will not be repeated here.

[0077] The embodiment of the present application also provides a light receiving component, in which the optoelectronic device in the active component is a detector. The light receiving component can adopt a single-channel architecture or a multi-channel architecture. For other contents of the light receiving component, please refer to the above description, which will not be repeated here.

[0078] When the above-mentioned light receiving component is working, the laser beam enters the interior of the accommodating cavity through the coupling lens and is then received by the detector to realize the conversion between the optical signal and the electrical signal.

[0079] The embodiment of the present application also provides an optical module, which is a signal transmission device that can realize photoelectric and electro-optical conversion. It can convert electrical signals into optical signals at the transmitting end and then output them, and can convert input optical signals into electrical signals at the receiving end. The optical module can be used in optical communication scenarios and can also be used in vehicle-mounted equipment.

[0080] like Fig.10 As shown, the optical module includes an optical transmitting component 1, an optical receiving component 110, an optical fiber interface 130 and a signal processing circuit 120; wherein the optical transmitting component 1 is used to convert an electrical signal into an optical signal, and the optical receiving component 110 is used to convert an optical signal into an electrical signal. At least one of the optical transmitting component 1 and the optical receiving component 110 adopts the solution in the above embodiment.

[0081] The optical transmitting component 1 and the optical receiving component 110 are both connected to the optical fiber interface 130 through an optical fiber adapter, and the optical fiber interface 130 is used to connect to an external optical fiber. The optical transmitting component 1 can transmit the generated optical signal to the external optical fiber through the optical fiber interface 130, and the optical receiving component 110 can receive the optical signal input from the external optical fiber through the optical fiber interface 130.

[0082] The optical emitting component 1 and the optical receiving component 110 are also electrically connected to the signal processing circuit 120. The signal processing circuit 120 can output a driving signal to the optical emitting component 1 based on the electrical signal during the signal transmission stage, and the optical emitting component 1 generates an optical signal corresponding to the electrical signal under the control of the driving signal. The signal processing circuit 120 can also convert the optical detection signal generated by the optical receiving component 110 according to the optical signal into an electrical signal during the signal receiving stage and then output it.

[0083] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A packaging structure of an optoelectronic device, characterized in that: The packaging structure comprises: A packaging tube shell, wherein the packaging tube shell is a square shell structure, having a containing cavity and a light window hole penetrating the containing cavity; an active component, the active component is disposed in the accommodating cavity and comprises an optoelectronic device, the optoelectronic device is used to emit or receive a laser beam passing through the optical window hole; and A coupling lens is mounted on the package tube shell and is opposite to the light window hole; the coupling lens is used to adjust the pattern spot of the laser beam passing through the light window hole.

2. The packaging structure according to claim 1, characterized in that: The packaging structure also includes a mounting lens barrel mounted on the packaging shell; At least a portion of the mounting lens barrel is located in the light window hole and has a lens barrel cavity communicating with the accommodating cavity; The coupling lens is installed in the lens barrel cavity.

3. The packaging structure according to claim 2, characterized in that: The mounting lens barrel extends into the accommodating cavity through the light window hole, and the coupling lens is arranged at the portion of the mounting lens barrel located in the accommodating cavity.

4. The packaging structure according to claim 2 or 3, characterized in that: The mounting lens barrel has an outer peripheral surface, and a portion of the outer peripheral surface is in contact with the hole wall of the light window hole; The hole wall of the light window hole and the outer peripheral surface of the mounting lens barrel are connected by welding, thread structure, connecting glue or interference fit.

5. The packaging structure according to claim 2 or 3, characterized in that: The mounting lens barrel has an outer peripheral surface, and the mounting lens barrel further comprises an outer peripheral protrusion arranged on the outer peripheral surface, and the outer peripheral protrusion contacts the outer side surface of the packaging tube shell; The peripheral protrusion and the packaging tube shell are connected by welding or connecting glue.

6. The packaging structure according to claim 5, characterized in that: The peripheral protrusion is an annular structure surrounding the lens barrel cavity on the peripheral surface, and the connection position between the peripheral protrusion and the packaging tube shell surrounds the periphery of the light window hole.

7. The packaging structure according to claim 5 or 6, characterized in that: There is a gap between the light window and the mounting lens barrel.

8. The packaging structure according to claim 1, characterized in that: The coupling lens is installed in the light window.

9. The packaging structure according to any one of claims 1 to 8, characterized in that: The packaging structure is a light emitting component or a light receiving component; In the light emitting assembly, the optoelectronic device in the active assembly includes a laser; In the light receiving component, the optoelectronic device in the active component includes a detector.

10. The packaging structure according to any one of claims 1 to 9, characterized in that: The active component includes a plurality of the optoelectronic devices arranged in an array; The functional component further comprises a wave splitting and combining device and a lens array, wherein the wave splitting and combining device comprises a plurality of first coupling ends and a second coupling end, and the lens array comprises a plurality of sub-lenses; The optoelectronic device, the sub-lens and the first coupling end are arranged in a one-to-one correspondence, and the sub-lens is used to adjust the laser beam pattern between the optoelectronic device and the first coupling end; The second coupling end is coupled to the coupling lens.

11. The packaging structure according to any one of claims 1 to 10, characterized in that: The package tube shell further comprises an external component, and the external component is arranged at a portion of the package tube shell opposite to the light window hole; The external connection component includes a plurality of conductive pins, and the conductive pins extend from the outside of the accommodating cavity through the packaging tube shell and into the accommodating cavity; The portion of the conductive pin located in the accommodating cavity is electrically connected to the active component.

12. An optical module, characterized in that: The optical module includes an optical fiber interface, a signal processing circuit, and a packaging structure according to any one of claims 1 to 11; the packaging structure is optically connected to the optical fiber interface and electrically connected to the signal processing circuit.

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