Optical module and communication interface device

Abstract

The utility model provides an optical module which comprises a fixed seat, a top cover, a circuit board assembly and an optical assembly. The top cover and the fixing seat form a module cavity, and the circuit board assembly and the optical assembly are arranged in the module cavity. The fixing base comprises a bottom, a sealing side wall, an optical port side wall and an opening. The utility model also provides a communication interface device. The communication interface device comprises the optical module, a communication connector which is plugged with the optical module, and a communication circuit board which is connected with the communication connector. The optical module and the communication interface device thereof are compact in structural layout, space-saving, easy to integrate and maintain, and capable of improving the efficiency of the whole system and reducing the material cost through lower power consumption.

Description

Technical Field

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

[0002] With the continuous development of modern communication technology, optical communication technology has become the mainstream in building modern communication networks. Optical communication not only dominates professional fields such as communication networks and data centers, but also begins to extend to consumer electronics, medical equipment, smart equipment and other fields. Optical modules are used to realize the conversion and transmission of photoelectric signals, and are the basis for high-speed transmission of optical communication data. Compared with traditional data transmission forms such as HDMI and USB, their transmission rate has obvious advantages.

[0003] However, currently all kinds of optical modules comply with the corresponding multi-source agreement regulations, with a relatively fixed size range and a large size, but too long. In addition, the optical module needs to be equipped with a corresponding module socket when used, which further increases its size. For new application areas such as projection display equipment and artificial intelligence robots, the large size makes it difficult to integrate and cannot meet application requirements. Therefore, in new application scenarios, optical modules need to be miniaturized. Utility Model Content

[0004] In view of this, the utility model provides an optical module and a communication interface device that can solve the above problems.

[0005] An optical module includes a fixing seat, a top cover coupled to the fixing seat, a circuit board assembly arranged on the fixing seat, and an optical assembly arranged on the circuit board assembly. The fixing seat and the top cover form a module cavity. The circuit board assembly and the optical assembly are arranged in the module cavity. The fixing seat includes a bottom, two sealing side walls arranged on opposite sides of the bottom, an optical port side wall connecting the bottom and the sealing side walls, an opening located at the bottom and arranged opposite to the optical port side wall, and a mounting portion arranged at the bottom facing outside the opening. The mounting portion extends away from the optical port side wall.

[0006] Furthermore, the fixing seat also includes a plurality of abutment grooves arranged on the fixing seat, a plurality of limiting parts arranged in the fixing seat, the abutment grooves are arranged on the light port side wall and the sealing side wall, and the abutment grooves are arranged where the fixing seat and the top cover are in contact.

[0007] Furthermore, the limiting portion includes a plurality of height limiting portions and a plurality of horizontal limiting portions arranged above the height limiting portions.

[0008] Furthermore, the top cover includes a cover plate, an electrical port side cover arranged on the cover plate, and an optical port side cover located on the cover plate and arranged opposite to the electrical port side cover, the arrangement direction of the electrical port side cover and the optical port side cover is parallel to the arrangement direction of the opening and the optical port side wall, and the electrical port side cover is provided with an electrical port on the side opposite to the cover plate.

[0009] Furthermore, the optical port side wall includes at least one photoelectric notch arranged on the optical port side wall, and the photoelectric notch is arranged on the edge of the optical port side wall facing away from the bottom. The optical port side cover is provided with an electrical notch and two optical notches at the edge close to the cover plate. The electrical notch and the optical port side wall form a cable passage, and the optical notch and the optical port side cover form a fiber optic passage.

[0010] Further, the circuit board assembly includes a circuit board, a plurality of limiting notches arranged on the circuit board, a communication connection portion arranged at one end of the circuit board, and a cable electrically connected to the circuit board, the limiting notch is arranged at the edge of the circuit board, the limiting notch is engaged with the horizontal limiting portion, the communication connection portion is arranged close to the open side, the communication connection portion passes through the electrical connection port and is arranged on the outside of the module cavity, the communication connection portion is provided with a communication terminal, the cable is arranged below the optical fiber adapter, the cable is electrically connected to the circuit board, and the cable extends outward along the electrical connection port.

[0011] Furthermore, the circuit board assembly also includes a plurality of electronic devices arranged on the circuit board, and the electronic devices include at least one laser chip and at least one receiver chip.

[0012] Furthermore, the optical component includes at least one optical lens arranged on the circuit board, and at least one optical fiber adapter overlapping the optical lens, the optical lens cover is arranged above one of the laser chips and one of the receiver chips, an optical fiber is arranged in the optical fiber adapter, and the optical fiber extends outward through the module cavity.

[0013] A communication interface device comprises at least one communication interface component and at least one optical module as described above arranged on the communication interface component.

[0014] Furthermore, the communication interface component is also provided with a communication connector and a communication circuit board receiving the communication connector, the communication circuit board is fixedly connected to the mounting portion via fasteners, the communication connector includes an interface seat mounted on the communication circuit board, and an interface terminal arranged in the interface seat, one end of the interface terminal is electrically connected to the communication terminal of the optical module, and the other end is electrically connected to the communication circuit board.

[0015] Compared with the prior art, the optical module and communication interface device provided by the utility model are provided with the fixing seat and the top cover to facilitate the miniaturized integrated use of the optical module. The top cover and the fixing seat form the module cavity, which ensures the heat dissipation capacity of the optical module. The cable, the optical lens and the optical fiber adapter are all arranged in the module cavity and attached to the circuit board, making the overall structure more compact. The photoelectric notch on the fixing seat and the electrical notch and the optical notch arranged on the top cover form the optical fiber opening and the cable opening, which facilitates the optical fiber to leave the module cavity through the optical fiber opening, and the cable to leave the module cavity through the cable opening, thereby reducing the use space. The setting of the mounting portion enables the optical module to be installed on the communication circuit board through a simple fixing part, replacing the module socket used by the existing optical module, simplifying the overall installation and disassembly of the optical module, and facilitating the integrated use in miniaturized scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention provides a schematic diagram of the structure of an optical module and a communication interface device.

[0017] Figure 2 for Figure 1 A schematic structural diagram of a top cover.

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of a fixing seat.

[0019] Figure 4 for Figure 1 Rear view of the optical module. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0021] See also Figures 1 to 4 , which is a structural schematic diagram of an optical module and a communication interface device provided by the utility model.

[0022] The optical module includes a fixing base 10, a top cover 20 coupled to the fixing base 10, a circuit board assembly 30 disposed on the fixing base 10, and an optical assembly 40 disposed on the circuit board assembly 30. It is conceivable that the optical module also includes other functional modules, such as a connection assembly and a mounting assembly, etc., which are well known to those skilled in the art and will not be described in detail herein.

[0023] The fixing base 10 and the top cover 20 form a module cavity, and the circuit board assembly 30 and the optical assembly 40 are arranged in the module cavity. The module cavity is hollow inside to form a cavity, which is convenient for heat dissipation. The fixing base 10 includes a bottom 11, two sealing side walls 12 arranged on opposite sides of the bottom 11, an optical port side wall 13 connecting the bottom 11 and the sealing side wall 12, an opening 14 located at the bottom 11 and arranged opposite to the optical port side wall 13, a mounting portion 15 arranged on the bottom 11 facing the outside of the opening 14, a plurality of abutment grooves 16 arranged on the fixing base 10, and a plurality of limiting portions 17 arranged in the fixing base 10. The fixing base 10 can be made of metal material for heat dissipation.

[0024] The optical port side wall 13 includes a photoelectric notch 131 disposed on the optical port side wall 13. The photoelectric notch 131 is disposed at the edge of the optical port side wall 13 facing away from the bottom 11. The arrangement of the photoelectric notch 131 is related to the arrangement of the top cover 20 described below, and will be described in detail at the top cover 20 described below.

[0025] The mounting portion 15 is disposed on a side of the bottom 11 close to the opening 14. The mounting portion 15 extends away from the optical port side wall 13. The mounting portion 15 is used to set a fixing member to fix the optical module on the communication interface device.

[0026] The abutment groove 16 is disposed on the optical port side wall 13 and the sealing side wall 12. The abutment groove 16 is disposed at the place where the fixing seat 10 and the top cover 20 are attached, so that the top cover 20 can be covered on the fixing seat 10.

[0027] The limiting portion 17 is located above the bottom 11 and is arranged along the sealing side wall 12. The limiting portion 17 includes a plurality of height limiting portions 171 and a plurality of horizontal limiting portions 172 arranged above the height limiting portions 171. In this embodiment, the horizontal limiting portions 172 attached to different sealing side walls 12 are relatively arranged on two height limiting portions 171 adjacent to the opening 14. The arrangement of the height limiting portion 171 and the horizontal limiting portion 172 is related to the circuit board assembly 30 described below, and will be specifically described in conjunction with the circuit board assembly 30 described below.

[0028] The top cover 20 includes a cover plate 21, an electrical port side cover 22 disposed on the cover plate 21, and an optical port side cover 23 located on the cover plate 21 and disposed opposite to the electrical port side cover 22. The electrical port side cover 22 is provided with an electrical port 221 on the side away from the cover plate 21. The arrangement direction of the electrical port side cover 22 and the optical port side cover 23 is parallel to the arrangement direction of the opening 14 and the optical port side wall 13. The electrical port 221 and the bottom 11 form a passage for the circuit board assembly 30 to pass through, so the minimum distance between the electrical port 221 and the bottom 11 is greater than the thickness of the circuit board assembly 30, so that part of the circuit board assembly 30 can pass through the module cavity and be disposed outside the module cavity, which is convenient for heat dissipation and connection with the communication interface device. The optical port side cover 23 is provided with an electrical notch 231 and two optical notches 232 at the edge close to the cover plate 21. The electrical notch 231 and the optical port side wall 13 form a cable port 200. The optical notch 232 and the optical port side cover 23 form the optical fiber opening 100. In this embodiment, the optoelectronic notch 131 located on the optical port side wall 13 on the side opposite to the bottom 11 is arranged in an inverted convex shape. The inverted convex shape includes a first step and a second step arranged under the first step. The optical notch 232 and the first step form the optical fiber opening 100, and the optoelectronic notch 231 and the second step form the cable opening 200.

[0029] When the top cover 20 is buckled with the fixing seat 10, the top cover 20 is clamped between the sealing side walls 12, the electrical port side cover 22 covers the opening 14, and the optical port side cover 23 covers the optical port side wall 13. The electrical through hole 221 covers the bottom 11 to form a through hole for the circuit board assembly 30 to extend out. The photoelectric notch 131 covers the electrical notch 231 and the optical notch 232 to form the cable through hole 200 and the optical fiber through hole 100.

[0030] The circuit board assembly 30 includes a circuit board 31, a plurality of limiting notches 32 arranged on the circuit board 31, a plurality of electronic devices 33 arranged on the circuit board 31, a communication connection part 34 arranged at one end of the circuit board 31, and a cable 35 electrically connected to the circuit board 31.

[0031] The circuit board 31 is provided with circuit traces, and the electronic device 33 is electrically connected through the circuit traces, so as to realize functions such as power supply, photoelectric signal conversion, and electrical signal transmission. The plurality of height limit portions 171 are arranged at the same height so that the circuit board 31 is parallel to the bottom 11 to maintain horizontality. The plurality of height limit portions 171 close to the side of the opening 14 are connected to the mounting portion 15 to provide support for the connection between the circuit board 31 and the communication interface device. The height limit portion 171 supports the circuit board 31 to prevent the circuit board 31 from being directly attached to the bottom 11, so that the electronic device 33 arranged on the circuit board 31 facing the bottom 11 does not conflict with the bottom 11, thereby preventing the electronic device 33 from being damaged.

[0032] The limiting notch 32 is arranged at the edge of the circuit board 31. The limiting notch 32 is engaged with the horizontal limiting portion 172, so that the circuit board 131 is blocked by the horizontal limiting portion 172 and does not move horizontally. In this embodiment, the horizontal limiting portion 172 and the limiting notch 32 are both semicircular. The shape and size of the limiting notch 32 are the same as those of the horizontal limiting portion 172, so that the horizontal limiting portion 172 and the limiting notch 32 are engaged without a gap. The lowest height of the horizontal limiting portion 172 on the sealing side wall 12 is less than or equal to the lowest height of the circuit board 31 on the sealing side wall 12, and the highest height of the horizontal limiting portion 172 on the sealing side wall 12 is greater than or equal to the highest height of the circuit board 31 on the sealing side wall 12, so that the engaging surface of the limiting notch 32 is completely arranged on the horizontal limiting portion 172.

[0033] The electronic device 33 includes at least one laser chip and at least one receiver chip. The laser chip is used to generate a module optical signal, and the receiver chip is used to convert an external optical signal into an electrical signal.

[0034] The communication connection part 34 is disposed outside the module cavity through the electrical port 211. The communication connection part 34 is provided with a communication terminal 341.

[0035] The cable 35 is disposed below the optical assembly 40 , and the cable 35 extends outward along the cable opening 200 to provide power for the optical module.

[0036] The optical component 40 includes at least one optical lens 41 disposed on the circuit board 31, and at least one optical fiber adapter 42 overlapping the optical lens 41. The optical lens 41 is covered on one of the laser chips and the receiver chip. The optical lens 41 is used to transmit and deflect optical signals. The optical fiber adapter 42 is used to receive optical signals input from the outside and output optical signals generated from the laser chip. The optical fiber adapter 42 is provided with an optical fiber, and the optical fiber extends outward through the module cavity. The method of installing the optical fiber adapter 42 on the optical lens 41 is a general technology and is not repeated here. During electro-optical conversion, the laser chip generates an optical signal, and the optical lens 41 couples the optical signal generated by the laser chip into the optical fiber adapter 42; during photoelectric conversion, the external input optical signal is emitted from the optical fiber to the receiver chip, and the external optical signal of the receiver chip is converted into an electrical signal.

[0037] The present application also provides a communication interface device, which includes at least one communication interface component 50 and at least one optical module arranged on the communication interface component 50. It is conceivable that the communication interface device also includes some other functional modules, such as a connection component and an installation component, etc., which are well known to those skilled in the art and will not be described in detail here.

[0038] The communication interface assembly 50 is also provided with a communication connector 51 and a communication circuit board 52 receiving the communication connector 51. The communication connector 51 includes an interface seat 511 mounted on the communication circuit board 52, and an interface terminal 512 arranged in the interface seat 511. The interface seat 511 is plugged into the communication connection portion 34 of the optical module. One end of the interface terminal 512 is electrically connected to the communication terminal 341 of the optical module, and the other end is electrically connected to the communication circuit board 52. The communication circuit board 52 is fixedly connected to the mounting portion 15 by a fastener.

[0039] Compared with the prior art, the optical module and communication interface device provided by the utility model are provided with the fixing seat 10 and the top cover 20 to facilitate the miniaturized integrated use of the optical module. The top cover 20 and the fixing seat 10 form the module cavity, which ensures the heat dissipation capacity of the optical module. The cable 35, the optical lens 41 and the optical fiber adapter 42 are all arranged in the module cavity and attached to the circuit board 31, making the overall structure more compact. The photoelectric notch 131 on the fixing seat 10 and the electrical notch 231 and the optical notch 232 arranged on the top cover 20 form the optical fiber opening 100 and the cable opening 200, which facilitates the optical fiber to leave the module cavity through the optical fiber opening 100, and the cable 35 to leave the module cavity through the cable opening 200, thereby reducing the use space. The setting of the mounting portion 15 enables the optical module to be mounted on the communication circuit board 52 by simple fixings, replacing the module socket used in the existing optical module, thereby simplifying the overall installation and disassembly of the optical module and facilitating integrated use in miniaturized scenarios.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. An optical module, characterized in that: The optical module includes a fixing seat, a top cover coupled to the fixing seat, a circuit board assembly arranged on the fixing seat, and an optical assembly arranged on the circuit board assembly, the fixing seat and the top cover form a module cavity, the circuit board assembly and the optical assembly are arranged in the module cavity, the fixing seat includes a bottom, two sealing side walls arranged on opposite sides of the bottom, an optical port side wall connecting the bottom and the sealing side wall, an opening located at the bottom and arranged opposite to the optical port side wall, and a mounting portion arranged at the bottom facing outside the opening, the mounting portion extending away from the optical port side wall.

2. The optical module according to claim 1, wherein: The fixing seat also includes a plurality of abutment grooves arranged on the fixing seat, a plurality of limiting parts arranged in the fixing seat, the abutment grooves are arranged on the light port side wall and the sealing side wall, and the abutment grooves are arranged where the fixing seat and the top cover are in contact.

3. The optical module according to claim 2, wherein: The limiting portion includes a plurality of height limiting portions and a plurality of horizontal limiting portions arranged above the height limiting portions.

4. The optical module according to claim 3, wherein: The top cover includes a cover plate, an electrical port side cover arranged on the cover plate, and an optical port side cover located on the cover plate and arranged opposite to the electrical port side cover. The arrangement direction of the electrical port side cover and the optical port side cover is parallel to the arrangement direction of the opening and the optical port side wall. The electrical port side cover is provided with an electrical port on the side opposite to the cover plate.

5. The optical module according to claim 4, wherein: The optical port side wall includes at least one photoelectric notch arranged on the optical port side wall, and the photoelectric notch is arranged on the edge of the optical port side wall facing away from the bottom. The optical port side cover is provided with an electrical notch and two optical notches at the edge close to the cover plate. The electrical notch and the optical port side wall form a cable passage, and the optical notch and the optical port side cover form an optical fiber passage.

6. The optical module according to claim 4, wherein: The circuit board assembly includes a circuit board, a plurality of limiting notches arranged on the circuit board, a communication connection portion arranged at one end of the circuit board, and a cable electrically connected to the circuit board, the limiting notch is arranged at the edge of the circuit board, the limiting notch is engaged with the horizontal limiting portion, the communication connection portion is arranged close to the open side, the communication connection portion passes through the electrical connection port and is arranged outside the module cavity, the communication connection portion is provided with a communication terminal, the cable is arranged below the optical component, and the cable extends outward along the electrical connection port.

7. The optical module according to claim 6, wherein: The circuit board assembly further includes a plurality of electronic devices disposed on the circuit board, the electronic devices including at least one laser chip and at least one receiver chip.

8. The optical module according to claim 7, wherein: The optical component includes at least one optical lens arranged on the circuit board, and at least one optical fiber adapter overlapping the optical lens, the optical lens cover is arranged above one of the laser chips and one of the receiver chips, an optical fiber is arranged in the optical fiber adapter, and the optical fiber extends outward through the module cavity.

9. A communication interface device, characterized in that: The communication interface device comprises at least one communication interface component, and at least one optical module as described in any one of claims 1 to 8 arranged on the communication interface component.

10. The communication interface device according to claim 9, characterized in that: The communication interface component also includes a communication connector and a communication circuit board receiving the communication connector, wherein the communication circuit board is fixedly connected to the mounting portion via fasteners, and the communication connector includes an interface seat mounted on the communication circuit board, and an interface terminal disposed in the interface seat, wherein one end of the interface terminal is electrically connected to the communication terminal of the optical module, and the other end is electrically connected to the communication circuit board.

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