Coaxial packaging device and optical communication module

Abstract

The utility model provides a coaxial packaging device and an optical communication module, and relates to the technical field of optical communication modules. The coaxial packaging device comprises a tube socket, a lens transition ring and a lens. The tube base is provided with a first stand column and a photoelectric chip for photoelectric conversion. The first column has a bearing surface away from the tube socket. The lens transition ring is mounted on the bearing surface. The lens is installed on the lens transition ring. And the lens realizes optical path coupling of the photoelectric chip and an external element. The coaxial packaging device is suitable for a high-coupling-efficiency occasion where the distance between the lens and the laser is close, facilitates the installation and fixation of the lens, and facilitates the adjustment of the coupling position of the lens in the three-axis direction.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication modules, in particular to a coaxial packaging device and an optical communication module. Background Art

[0002] In situations where higher coupling efficiency is required, the lens often needs to be actively coupled, and the optical path itself has a large magnification. In this case, the lens is close to the laser, the installation space of the lens is limited, and it is difficult to place the lens outside the tube cap. At present, the tube seat structure inside the coaxial packaging device cannot effectively support the lens, and the lens cannot be actively coupled in the X, Y, and Z axes on the tube seat, which is easy to cause displacement. Utility Model Content

[0003] The utility model aims to provide a coaxial packaging device and an optical communication module, which can effectively fix a lens on a tube seat, realize active coupling of the lens in three-axis directions, and improve the lens coupling accuracy.

[0004] The embodiment of the utility model is achieved as follows:

[0005] In a first aspect, the utility model provides a coaxial packaging device, comprising:

[0006] A tube base, on which a first column and a photoelectric chip for photoelectric conversion are provided, and the first column has a bearing surface away from the tube base;

[0007] A lens transition ring, wherein the lens transition ring is mounted on the bearing surface;

[0008] A lens is mounted on the lens transition ring, and the lens realizes optical path coupling between the optoelectronic chip and external elements.

[0009] In an optional embodiment, the pipe seat has a mounting surface for mounting the first column; the first column is extended in a direction perpendicular to the mounting surface;

[0010] The mounting surface is circular, and the first columns are continuously arranged along the circumferential direction on the mounting surface.

[0011] In an optional embodiment, a plurality of the first columns are disposed on the mounting surface, and the plurality of the first columns are spaced apart and distributed along a circumferential direction on the mounting surface.

[0012] In an optional embodiment, the first column also includes an outer peripheral surface and an inner side surface respectively connected to the bearing surface, and the outer peripheral surface and the inner side surface are arranged opposite to each other; the outer peripheral surface and the inner side surface are both arc-shaped surfaces; the arc length of the arc formed by the projection of the outer peripheral surface on the mounting surface is greater than half of the circumference of the circle where the projection is located; the optoelectronic chip is arranged inside the arc formed by the inner side surface.

[0013] In an optional embodiment, a second column is provided on the mounting surface, and the second column is used to mount the optoelectronic chip; the second column is located in the middle of the mounting surface relative to the first column.

[0014] In an optional embodiment, the optoelectronic chip includes a laser, and the coaxial packaging device further includes a laser carrier board, the laser carrier board is mounted on the second column, and the laser is mounted on the laser carrier board.

[0015] In an optional embodiment, the lens transition ring has a through hole extending through the lens transition ring along its axial direction, and the lens is installed in the through hole.

[0016] In an optional embodiment, a tube cap is further included, wherein the tube cap is disposed on the tube base, and the lens and the first column are disposed in the tube cap.

[0017] In an optional embodiment, the first column and the tube seat are integrally formed.

[0018] In an optional embodiment, the first column and the lens transition ring are welded or bonded.

[0019] In a second aspect, the utility model provides an optical communication module, comprising a pigtail upper component and a coaxial packaging device as described in any one of the aforementioned embodiments, wherein the pigtail upper component and the coaxial packaging device are connected.

[0020] The beneficial effects of the embodiments of the utility model include:

[0021] The coaxial packaging device provided in the embodiment of the utility model has a first column on the tube seat, which is used to support and fix the lens, and facilitates the installation of the lens. In addition, the setting of the first column provides a platform support for the coupling adjustment of the lens in the X and Y directions, and the setting of the lens transition ring can realize the coupling adjustment of the lens in the Z direction. In this way, the active coupling of the lens in the three-axis direction on the tube seat can be realized, and the lens coupling accuracy can be improved.

[0022] The optical communication module provided by the embodiment of the utility model comprises a pigtail upper part and the above-mentioned coaxial packaging device, and the lens can perform active coupling in three-axis directions on the tube seat, which is suitable for occasions where the distance between the laser and the lens is relatively close. The optical communication module has a compact structure and high coupling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the overall structure of a coaxial packaging device provided by an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the disassembled structure of the coaxial packaging device provided in an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the installation structure of a lens in a coaxial packaging device provided by an embodiment of the utility model;

[0027] Figure 4 A structural schematic diagram of a first type of first column structure and a tube seat from a first viewing angle in a coaxial packaging device provided by an embodiment of the utility model;

[0028] Figure 5 A structural schematic diagram of a first type of first column structure and a tube seat from a second perspective in a coaxial packaging device provided by an embodiment of the utility model;

[0029] Figure 6 A schematic diagram of the structure of a second type of first column in a coaxial packaging device provided by an embodiment of the utility model;

[0030] Figure 7 A schematic structural diagram of a third type of first column in a coaxial packaging device provided by an embodiment of the utility model;

[0031] Figure 8 A schematic structural diagram of an optical communication module including a coaxial packaging device provided in an embodiment of the utility model.

[0032] Icons: 100-coaxial packaging device; 110-tube socket; 111-mounting surface; 121-first column; 1211-bearing surface; 1213-outer peripheral surface; 1215-inner side surface; 123-second column; 125-notch; 130-lens transition ring; 140-lens; 151-laser; 153-laser carrier board; 155-photodetector; 160-tube cap; 171-pin; 173-glass insulator; 200-optical communication module; 210-pigtail upper part. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In some special occasions that require higher coupling efficiency, the lens often needs to be actively coupled, and the optical path itself has a large magnification. In this case, the distance between the lens and the laser is relatively close, and the lens needs to be installed inside the tube cap. However, in most existing optical communication modules, the lens is installed outside the tube cap. The tube seat structure inside the commonly used coaxial packaging device cannot effectively support the lens, and it is impossible to make the lens perform X, Y, and Z three-axis active coupling inside the tube cap.

[0040] In order to overcome at least one defect in the prior art, this embodiment proposes a coaxial packaging device, which facilitates the installation of a lens on a tube holder, so that the lens can be actively coupled in three axes, X, Y, and Z, on the tube holder, and meets the installation requirement of a close distance between the lens and the laser. In addition, the coaxial packaging device 100 has a compact structure and high coupling efficiency.

[0041] Please refer to Figures 1 to 4 A coaxial packaging device 100 provided in this embodiment includes a tube seat 110, a lens transition ring 130 and a lens 140. A first column 121 and an optoelectronic chip for photoelectric conversion are provided on the tube seat 110. The first column 121 has a bearing surface 1211 away from the tube seat 110. The lens transition ring 130 is mounted on the bearing surface 1211. The lens 140 is mounted on the lens transition ring 130. The lens 140 realizes the optical path coupling between the optoelectronic chip and the external element. The coaxial packaging device 100 is suitable for high coupling efficiency occasions where the lens 140 is close to the laser 151, which is conducive to the installation and fixation of the lens 140 on the tube seat, and facilitates the adjustment of the active coupling position of the lens 140 in the three-axis directions of X, Y and Z.

[0042] The tube base 110 has a mounting surface 111 for mounting the first column 121. The first column 121 is extended in a direction perpendicular to the mounting surface 111. The lens transition ring 130 is mounted on the bearing surface 1211 of the first column 121. The mounting surface 111 is circular. The first columns 121 are arranged continuously or at intervals along the circumferential direction on the mounting surface 111. Figure 4 , Figure 5 As shown, the first columns 121 are continuously arranged along the circumferential direction on the mounting surface 111. Figure 6 As shown, a plurality of first columns 121 are disposed on the mounting surface 111. The plurality of first columns 121 are spaced apart and distributed along the circumferential direction on the mounting surface 111.

[0043] In this embodiment, the first column 121 is arranged in a C-shape or a U-shape. The first column 121 is formed with a notch 125 in the circumferential direction. The notch 125 provides sufficient operating space for processes such as mounting and gold wire welding of the laser 151 and the laser carrier 153, facilitates the mounting of the laser 151 and the laser carrier 153, and facilitates the electrical connection between the laser carrier 153 and the external pin 171. The notch 125 may be one or more, and the shape, position, number, etc. of the notch 125 are not specifically limited.

[0044] The first column 121 also includes an outer peripheral surface 1213 and an inner side surface 1215 connected to the bearing surface 1211 respectively. The outer peripheral surface 1213 and the inner side surface 1215 are arranged opposite to each other. The outer peripheral surface 1213 and the inner side surface 1215 are both arc-shaped surfaces. The arc length of the arc formed by the projection of the outer peripheral surface 1213 on the mounting surface 111 is greater than half of the circumference of the circle where the projection is located. For example, the arc formed by the projection of the outer peripheral surface 1213 of the first column 121 on the mounting surface 111 is a 2 / 3 circle, a 3 / 4 circle, a 4 / 5 circle, etc. In this way, the contact area between the lens transition ring 130 and the first column 121 can be increased, and there can be enough connection space when laser welding or other fixing methods are used in the later stage, and the support and fixation of the lens transition ring 130 and the lens 140 are more reliable. In addition, the fixed position of the lens transition ring 130 can be designed symmetrically, the structure is more stable, and it is not easy to offset or run out of position. The optoelectronic chip is arranged inside the arc formed by the inner side surface 1215.

[0045] Of course, in some embodiments, the projection of the outer peripheral surface 1213 of the first column 121 on the mounting surface 111 may also be V-shaped, L-shaped or other shapes.

[0046] Combination Figure 6 A second column 123 is also provided on the mounting surface 111. The second column 123 is used to mount the optoelectronic chip. The second column 123 is located in the middle of the mounting surface 111 relative to the first column 121. Figure 6 In the structure shown, the first column 121 adopts a three-stage design with intervals. The first column 121 is located at the edge of the mounting surface 111. The first column 121 is used to support and fix the lens transition ring 130. A second column 123 is provided at the center of the mounting surface 111. The second column 123 is used to install the optoelectronic chip. The second column 123 and the first column 121 can be arranged at intervals and are independent of each other. The second column 123 and the first column 121 can also be connected together and arranged continuously, which is not specifically limited here.

[0047] Optionally, the coaxial package device 100 further includes a laser carrier board 153. The optoelectronic chip includes a laser 151. The laser carrier board 153 is mounted on the second column 123. The laser 151 is mounted on the laser carrier board 153. The laser 151 and the laser carrier board 153 are electrically connected.

[0048] In this embodiment, the light source is located at the side. Figure 4 In the structure shown, the laser 151 and the laser carrier 153 are arranged on the inner side wall of the ring structure formed by the first column 121. The laser carrier 153 can be fixed on the inner side 1215 of the first column 121 by gold soldering or silver glue bonding. This structure is suitable for the transmitting end of optical transmission.

[0049] It is easy to understand that the positions of the laser 151 and the laser carrier 153 on the tube base 110 depend on the position of the light source. If the light source is located on the top surface, a carrier parallel to the tube base 110 can be extended on the inner side surface 1215 of the first column 121 (not shown). The laser carrier 153 is arranged on the carrier. The laser 151 is mounted on the laser carrier 153. Alternatively, the laser carrier 153 can also be directly mounted on the mounting surface 111 of the tube base 110, which is not specifically limited here.

[0050] Combination Figure 7 The optoelectronic chip includes a photodetector 155, which is fixed on the mounting surface 111 of the tube base 110 and is approximately located in the middle area of ​​the tube base 110. The first column 121 includes a plurality of first columns 121 arranged at intervals, and the plurality of first columns 121 are arranged on the periphery of the photodetector 155, and the plurality of first columns 121 jointly support and fix the lens transition ring 130. This structure is suitable for the receiving end of optical transmission.

[0051] It is understandable that the shapes of the bearing surfaces 1211 of the plurality of first columns 121 may be the same or different, as long as the bearing surfaces 1211 of the plurality of first columns 121 are located in the same plane and can provide stable support for the lens transition ring 130 .

[0052] Optionally, the first column 121 and the tube base 110 are integrally formed. This facilitates processing and manufacturing, and eliminates assembly steps. Of course, the first column 121 and the tube base 110 can also be manufactured independently and connected separately, such as by bonding, welding, etc.

[0053] Optionally, the first column 121 and the lens transition ring 130 are welded or bonded. In this embodiment, the lens 140 and the lens transition ring 130 are welded by laser penetration welding. The lens transition ring 130 and the first column 121 are welded by laser lap welding.

[0054] The lens transition ring 130 has a through hole extending through the axial direction thereof, and the lens 140 is installed in the through hole. The lens 140 can be fixed on the hole wall of the through hole by bonding or welding.

[0055] Combination Figure 2The coaxial packaging device 100 also includes a tube cap 160, which is covered on the tube base 110. The tube cap 160 and the tube base 110 are welded. The lens 140 and the first column 121 are both arranged in the tube cap 160. The tube cap 160 protects the lens 140, the first column 121, the laser 151 and the laser carrier 153. In occasions where air tightness is required, the tube cap 160 can be a flat window tube cap 160. The flat window glass in the flat window tube cap 160 is sintered with the tubular metal part through glass solder to improve the air tightness of the structure. If there is no special requirement for air tightness, the tube cap 160 can also omit the flat window glass and use a metal tube with a light-transmitting hole on the top instead.

[0056] The tube base 110 is also provided with a pin 171 and a glass insulator 173. The pin 171 is sintered on the tube base 110 at high temperature through the glass insulator 173 to ensure the airtightness of the connection between the pin 171 and the tube base 110. The pin 171 is electrically connected to the laser carrier 153 through a lead wire.

[0057] In the coaxial packaging device 100, the position of the lens 140 can be moved in three axes, X, Y, and Z, according to the coupling situation, and is fixed to the first column 121 of the tube seat 110 through the lens transition ring 130, thereby realizing effective fixation and support of the lens 140 in the tube cap 160. It can be understood that the outer diameter of the lens 140 is adapted to the aperture size of the through hole of the lens transition ring 130, so as to facilitate axial movement along the lens transition ring 130 to realize active coupling of the Z axis. Since the lens 140 is installed in the tube cap 160, the structure is more compact, which is suitable for occasions with high coupling efficiency where the distance between the laser 151 and the lens 140 is close. Secondly, the coaxial packaging device 100 can be applied to both the receiving end and the transmitting end of optical transmission, and has a wide range of application scenarios.

[0058] Combination Figure 8 The embodiment of the utility model further provides an optical communication module 200, including a pigtail upper component 210 and the coaxial packaging device 100 as described above, wherein the pigtail upper component 210 and the coaxial packaging device 100 are connected.

[0059] In summary, the coaxial packaging device 100 and the optical communication module 200 provided by the embodiment of the utility model have the following beneficial effects:

[0060] The coaxial packaging device 100 provided by the embodiment of the utility model is provided with a first column 121 on the tube seat 110, which is used to support and fix the lens 140, so as to facilitate the installation of the lens 140 in the tube cap 160. In addition, the setting of the first column 121 provides a platform support for the coupling adjustment of the lens 140 in the X and Y directions. In addition, the setting of the lens transition ring 130 can realize the coupling adjustment of the lens 140 in the Z direction. When the lens 140 is adjusted to a suitable position, the hole wall of the through hole of the lens 140 and the lens transition ring 130 can be fixed together by dispensing glue or laser welding, and the lens transition ring 130 and the first column 121 are also fixed together. In this way, the active coupling of the lens 140 in three-axis directions inside the tube cap 160 can be realized, and the coupling accuracy of the lens 140 can be improved. In addition, the structure of the coaxial packaging device 100 is more compact and the coupling efficiency is high.

[0061] The optical communication module 200 provided by the embodiment of the utility model comprises a pigtail upper part 210 and the above-mentioned coaxial packaging device 100. The lens 140 can perform active coupling in three-axis directions in the tube cap 160, which is suitable for occasions where the laser 151 and the lens 140 are close to each other. The optical communication module 200 has a compact structure and high coupling efficiency.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A coaxial packaging device, It is characterized in that include: A tube base (110), wherein a first column (121) and a photoelectric chip for performing photoelectric conversion are provided on the tube base (110), and the first column (121) has a bearing surface (1211) away from the tube base (110); A lens transition ring (130), wherein the lens transition ring (130) is mounted on the bearing surface (1211); A lens (140) is mounted on the lens transition ring (130), and the lens (140) realizes optical path coupling between the optoelectronic chip and external elements.

2. The coaxial packaging device according to claim 1, It is characterized in that The pipe seat (110) has a mounting surface (111) for mounting the first column (121); the first column (121) is extended in a direction perpendicular to the mounting surface (111); The mounting surface (111) is circular, and the first upright columns (121) are continuously arranged along a circumferential direction on the mounting surface (111).

3. The coaxial packaging device according to claim 2, It is characterized in that A plurality of first columns (121) are provided on the installation surface (111), and the plurality of first columns (121) are distributed at intervals along a circumferential direction on the installation surface (111).

4. The coaxial packaging device according to claim 2, It is characterized in that The first column (121) also includes an outer peripheral surface (1213) and an inner side surface (1215) respectively connected to the bearing surface (1211); the outer peripheral surface (1213) and the inner side surface (1215) are arranged opposite to each other, and both the outer peripheral surface (1213) and the inner side surface (1215) are arc-shaped surfaces; the arc length formed by the projection of the outer peripheral surface (1213) on the mounting surface (111) is greater than half of the circumference of the circle where the projection is located; and the optoelectronic chip is arranged inside the arc formed by the inner side surface (1215).

5. The coaxial packaging device according to claim 2, It is characterized in that A second column (123) is provided on the mounting surface (111), and the second column (123) is used to mount the optoelectronic chip; the second column (123) is located in the middle of the mounting surface (111) relative to the first column (121).

6. The coaxial packaging device according to claim 5, It is characterized in that The optoelectronic chip comprises a laser (151), and the coaxial packaging device further comprises a laser carrier board (153). The laser carrier board (153) is mounted on the second column (123), and the laser (151) is mounted on the laser carrier board (153).

7. The coaxial packaging device according to claim 1, It is characterized in that The lens transition ring (130) has a through hole penetrating along its axial direction, and the lens (140) is installed in the through hole.

8. The coaxial packaging device according to claim 1, It is characterized in that It also includes a tube cap (160), the tube cap (160) is covered on the tube base (110), and the lens (140) and the first column (121) are arranged in the tube cap (160).

9. The coaxial packaging device according to claim 1, It is characterized in that The first upright column (121) and the tube seat (110) are integrally formed.

10. The coaxial packaging device according to any one of claims 1 to 9, It is characterized in that The first upright column (121) and the lens transition ring (130) are welded or bonded.

11. An optical communication module, It is characterized in that It comprises a pigtail upper component (210) and a coaxial packaging device according to any one of claims 1 to 10, wherein the pigtail upper component (210) is connected to the coaxial packaging device.

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