CN213780441U

CN213780441U - COB optical module

Info

Publication number: CN213780441U
Application number: CN202022473013.4U
Authority: CN
Inventors: 舒坤; 田波; 许其建; 高云龙
Original assignee: Wuhan Huagong Genuine Optics Tech Co Ltd
Current assignee: Wuhan Huagong Genuine Optics Tech Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-23
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a COB optical module technical field provides a COB optical module, including base, COB subassembly, still include LC optical port, the COB subassembly includes TOSA adapter, light engine, PCBA board and mobilizable ROSA adapter, TOSA adapter with the ROSA adapter is all installed on the LC optical port, and LC optical port with the COB subassembly is all installed on the base; COB optical module still includes demountable installation in locking subassembly on the LC optical port, the ROSA adapter with the TOSA adapter passes through the locking subassembly locking is in on the LC optical port. The utility model discloses a in the course of making optical module, design LC optical port and base for the design of disconnect-type, conveniently adjust and match good size to guarantee that the optical port can satisfy the requirement of MSA agreement, can normally accomplish the assembly simultaneously; the independent locking assembly is adopted to be matched with the LC optical port to fix the ROSA adapter and the TOSA adapter, and the packaging problem caused by flexible connection of the ROSA adapter through optical fibers is solved.

Description

COB optical module

Technical Field

The utility model relates to a COB optical module technical field specifically is a COB optical module.

Background

With the development of communication technology, the transmission rate of an optical module is higher and higher, and meanwhile, the packaging scheme of a multi-channel product is more diversified. In the traditional coaxial packaging module, the optical device is connected with the PCB through the flexible board, so that the device and the PCB can have relative displacement, the assembly of the device is not restricted by the positioning characteristics of the PCB, and the scheme generally designs the LC optical port and the base of the optical module together, and one part is directly molded. Similar to the CWDM4 and FR4 optical modules, if the COB scheme is adopted, the optical device and the PCB are directly bonded together, and the LC optical port is limited by the optical port positioning size, the PCB positioning size, and the coupling deviation. If the LC optical port and the base location are still integral at this point, the device and PCB assembly tolerances may exceed the tolerance requirements for the base location, resulting in an inability to assemble. In addition, because the ROSA adapter is flexibly connected through the optical fiber, the ROSA adapter is movable, and the conventional LC optical port is of an integrated structure, the flange of the ROSA adapter cannot be installed in the LC optical port, which causes a great difficulty in the process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a COB optical module can solve the partial defect among the prior art at least.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a COB optical module comprises a base, a COB assembly and an LC optical port, wherein the COB assembly comprises a TOSA adapter, an optical engine, a PCBA board and a movable ROSA adapter, the TOSA adapter and the ROSA adapter are both installed on the LC optical port, and the LC optical port and the COB assembly are both installed on the base; COB optical module still includes demountable installation in locking subassembly on the LC optical port, the ROSA adapter with the TOSA adapter passes through the locking subassembly locking is in on the LC optical port.

Further, the locking assembly includes a press block that can be capped onto the ROSA adapter, the press block being locked onto the LC optical port by a screw.

Further, be equipped with the confession on the LC light mouthful first draw-in groove that the ring flange card of ROSA adapter goes into, the briquetting orientation one side of ROSA adapter is equipped with the confession the second draw-in groove that the ring flange card of ROSA adapter goes into, first draw-in groove with the second draw-in groove encloses to close and forms and to block the cell body structure of ROSA adapter.

Furthermore, one sides of the first card slot and the second card slot, which are close to the electric port of the optical module, are provided with limiting surfaces for limiting the ROSA adapter to be pulled out.

Further, first draw-in groove with the second draw-in groove all has two, and two first draw-in groove and two the second draw-in groove all is a style of calligraphy side by side and arranges, TOSA adapter card is gone into another first draw-in groove and another second draw-in groove.

Furthermore, one side of the pressing block, which faces the ROSA adapter, is also provided with a convex rib which can be clamped into a groove on the LC optical port.

Furthermore, the pressing block is provided with a first cambered surface for embedding a part of the cambered surface of the ROSA adapter, the LC light port is provided with a second cambered surface for embedding a part of the cambered surface of the ROSA adapter, and the first cambered surface and the second cambered surface enclose to form a ring body structure capable of fixing the cylinder structure of the ROSA adapter.

Further, first cambered surface with the second cambered surface all has two, and two first cambered surface with two the second cambered surface all is a style of calligraphy and arranges side by side, the partial cambered surface of TOSA adapter imbeds in another one first cambered surface and another second cambered surface.

Further, the ROSA adapter is connected to the PCBA board by a flexible optical fiber.

Further, the LC optical port and the COB assembly are both adhered to the base.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the process of manufacturing the optical module, the LC optical port and the base are designed to be separated, so that the size is conveniently adjusted and matched, the optical port can meet the requirement of an MSA protocol, and meanwhile, the assembly can be normally completed.

2. The independent locking assembly is adopted to be matched with the LC optical port to fix the ROSA adapter and the TOSA adapter, and the packaging problem caused by flexible connection of the ROSA adapter through optical fibers is solved.

Drawings

Fig. 1 is a schematic view illustrating a conventional COB optical module according to an embodiment of the present invention when a COB assembly is fixed to a base;

fig. 2 is a schematic diagram of a COB assembly of a COB optical module according to an embodiment of the present invention;

fig. 3a is a schematic view (before assembly) of a COB optical module according to an embodiment of the present invention, illustrating that a COB assembly is mated with a locking assembly;

fig. 3b is a schematic diagram of the COB assembly and the locking assembly of the COB optical module according to the embodiment of the present invention (after assembly)

Fig. 4 is an exploded view of a COB optical module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a COB optical module according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an LC optical port of a COB optical module according to an embodiment of the present invention;

fig. 7a is a schematic view of a first viewing angle of a pressing block of a COB optical module according to an embodiment of the present invention;

fig. 7b is a second schematic view of a pressing block of a COB optical module according to an embodiment of the present invention;

in the reference symbols: 1-a COB assembly; 10-a ROSA adapter; 11-TOSA adapter; 111-flange plate; 12-a light engine; 13-PCBA board; 130-positioning holes; 2-LC optical port; 20-a first card slot; 21-a groove; 22-a first arc surface; 3-a base; 4-briquetting; 40-a second card slot; 400-limiting surface; 41-ribs; 42-a second arc surface; 5-a screw; 6-upper cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 2, fig. 3a, fig. 3b, fig. 4 and fig. 5, an embodiment of the present invention provides a method for manufacturing a COB optical module, including the following steps: s1, assembling the ROSA adapter 10, the TOSA adapter 11, the optical engine 12, and the PCBA board 13 together to obtain the COB assembly 1, wherein the ROSA adapter 10 is movable; s2, after the COB assembly 1 is assembled, adjusting the position of the LC optical port 2; s3, after the position of the LC optical port 2 is adjusted, the TOSA adapter 11 and the movable ROSA adapter 10 are mounted on the LC optical port 2; s4, after the installation is finished, the integral structure formed by the LC optical port 2 and the COB assembly 1 is installed in a base 3 for fixation; in the step S3, the LC optical port 2 whose position is adjusted may be such that the distance D1 between the flanges 111 of the ROSA adapter 10 and the TOSA adapter 11 and the positioning hole 130 of the PCBA board 13 matches the distance D2 between the flanges 111 of the ROSA adapter 10 and the TOSA adapter 11 and the PCB positioning post of the base 3, which are located on the LC optical port 2. In the conventional COB optical module, the LC optical port 2 is usually fixed to the chassis 3, where the distance between the two positions is defined as D1, the fluctuation range of the dimension D1 is large due to the coupling tolerance of the device and the PCBA attachment error, and the dimension D1 of each COB assembly 1 is not the same, but once the LC optical port 2 and the chassis 3 are fixed together in advance, the dimension D2 between the ROSA adapter 10 and the TOSA adapter 11 and the PCB positioning column of the chassis 3 is a fixed value (as shown in fig. 1), and the dimension D1 has a large error, so that the dimension D1 and the dimension D2 cannot be completely matched. In the present embodiment, to solve this problem, we first separate the LC optical port 2 from the base 3 during the manufacturing process, so that the size of D1 can be adjusted. In the embodiment, the ROSA adapter 10 is movable because it is flexibly connected by the optical fiber, but the relative position of the optical port needs to be fixed, so that the optical fiber can be inserted and pulled in the optical module without light falling, and the problem can be solved by using the movable LC optical port 2.

Referring to fig. 2, 3a, 3b, 4, 5, 6, 7a and 7b as an optimization scheme of the embodiment of the present invention, in the step S3, a locking assembly detachably mounted on the LC optical port 2 is adopted to lock the movable ROSA adapter 10 on the LC optical port 2, and the locking assembly is mounted after the position of the LC optical port 2 is adjusted. In contrast to the integrated form of the LC optical port 2 of the prior art, the flange 111 of the ROSA adapter 10 cannot be inserted into the LC optical port 2, so that in this embodiment a separate component, namely a locking assembly, is used for additional locking, and since this locking assembly is detachably connected to the LC optical port 2, it can be adjusted in position to ensure dimensional matching before final adhesive attachment.

In order to further optimize the above solution, referring to fig. 6, fig. 7a and fig. 7b, the locking assembly employs a pressing block 4 and a screw 5, the pressing block 4 presses the movable ROSA adapter 10 on the LC optical port 2, and then the pressing block 4 is fixed on the LC optical port 2 by the screw 5. In the embodiment, a specific locking mode is a pressing block 4 and a screw 5, and locking can be completed by pressing down the pressing block 4 and then screwing the pressing block 4 into a corresponding threaded hole of the LC optical port 2 through the screw 5. Of course, in addition to this locking, other locking means are also possible, such as snap-in, magnetic, etc. Preferably, a first card slot 20 is provided on the LC optical port 2 for the flange 111 of the ROSA adapter 10 to be clamped into, a second card slot 40 is provided on one side of the pressing block 4 facing the ROSA adapter 10 for the flange 111 of the ROSA adapter 10 to be clamped into, the ROSA adapter 10 is fixed by using the first card slot 20 and the second card slot 40, specifically, the first card slot 20 is provided on the LC optical port 2 for the flange 111 of the ROSA adapter 10 to be clamped into, the second card slot 40 is similarly provided at a position corresponding to the pressing block 4, the first card slot 20 and the second card slot 40 enclose to form a slot structure capable of clamping the flange 111 of the ROSA adapter 10, where the TOSA adapter 11 is fixed without clamping the card slot, and of course, and can be provided to have a better fixing effect after being set, and if set, there are two first card slots 20 and second card slots 40, and two the first card slot 20 and two the second card slot 40 all are arranged in a font side by side, the TOSA adapter 11 is blocked into the other one of the first card slot 20 and the other one of the second card slot 40.

In order to further optimize the above solution, referring to fig. 6, fig. 7a, and fig. 7b, the first card slot 20 and the second card slot 40 have a limiting surface 400 for limiting the ROSA adapter 10 to come out at a side close to the electrical port of the optical module. In this embodiment, the surfaces of the first and

second card slots

20 and 40 facing the electrical port are limiting surfaces 400, which can prevent the ROSA adapter 10 from falling out.

As shown in fig. 6, fig. 7a and fig. 7b, the pressing block 4 and the LC optical port 2 are further refined, and a protruding rib 41 capable of being snapped into the groove 21 of the LC optical port 2 is further provided on a side of the pressing block 4 facing the ROSA adapter 10. In this embodiment, to ensure a more stable assembly, the engagement of rib 41 into groove 21 may be used to limit movement in other possible orientations.

With reference to fig. 6, 7a and 7b, the press block 4 has a first arc surface 22 for embedding a part of the arc surface of the ROSA adapter 10, the LC light port 2 has a second arc surface 42 for embedding a part of the arc surface of the ROSA adapter 10, and the first arc surface 22 and the second arc surface 42 enclose to form a ring structure capable of fixing the ROSA adapter 10. Preferably, there are two first arc surfaces 22 and two second arc surfaces 42, and the two first arc surfaces 22 and the two second arc surfaces 42 are arranged in parallel in a straight line, and a part of the arc surfaces of the TOSA adapter 11 is embedded into the other first arc surface 22 and the other second arc surface 42. In this embodiment, in addition to the first groove 21 and the second groove 21 for locking the flange 111, the post structures of the ROSA adapter 10 and the TOSA adapter 11 may also be fixed, specifically, fixed by an arc surface, the arc surface may match the arc surface of the post structure, and the fixing form is similar to the form of the above-mentioned card slot, and will not be described in detail here.

As the optimization scheme of the embodiment of the utility model, ROSA adapter 10 passes through the flexible fiber connection on PCBA board 13. In this embodiment, the ROSA adapter 10 is active because it is connected by a flexible optical fiber.

As the utility model discloses the optimization scheme be in the S4 step, will LC light mouth 2 with the mode of gluing is adopted to fix after base 3 is packed into to the overall structure that COB subassembly 1 formed. The manufacturing method further includes S5, after the fixing step, covering the upper cover 6 on the integrated structure formed by the LC optical port 2 and the COB assembly 1, and locking the upper cover 6 on the base 3. In this embodiment, after the adjusted position is confirmed and the COB optical module is loaded into the base 3, the COB optical module and the base are fixed by dispensing, and finally the upper cover 6 is covered, so that the whole COB optical module is manufactured.

Example two:

the embodiment of the utility model provides a COB optical module adopts foretell COB optical module's preparation method to form, and it includes base 3, COB subassembly 1 and LC light mouth 2, COB subassembly 1 includes TOSA adapter 11, light engine 12, PCBA board 13 and mobilizable ROSA adapter 10, TOSA adapter 11 with ROSA adapter 10 all installs on the LC light mouth 2, just LC light mouth 2 with COB subassembly 1 all installs on the base 3. In the conventional COB optical module, the LC optical port 2 is usually fixed to the chassis 3, where the distance between the two positions is defined as D1, the fluctuation range of the dimension D1 is large due to the coupling tolerance of the device and the PCBA attachment error, and the dimension D1 of each COB assembly 1 is not the same, but once the LC optical port 2 and the chassis 3 are fixed together in advance, the dimension D2 between the ROSA adapter 10 and the TOSA adapter 11 and the PCB positioning column of the chassis 3 is a fixed value (as shown in fig. 1), and the dimension D1 has a large error, so that the dimension D1 and the dimension D2 cannot be completely matched. In the present embodiment, to solve this problem, we first separate the LC optical port 2 from the base 3 during the manufacturing process, so that the size of D1 can be adjusted. In the embodiment, the ROSA adapter 10 is movable because it is flexibly connected by the optical fiber, but the relative position of the optical port needs to be fixed, so that the optical fiber can be inserted and pulled in the optical module without light falling, and the problem can be solved by using the movable LC optical port 2.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 2, fig. 3a, fig. 3b, fig. 4, fig. 5, fig. 6, fig. 7a, and fig. 7b, the optical module further includes a locking assembly detachably mounted on the LC optical port 2, and the ROSA adapter 10 and the TOSA adapter 11 are locked on the LC optical port 2 through the locking assembly. The locking assembly comprises a pressing block 4 which can be covered on the ROSA adapter 10, and the pressing block 4 is locked on the LC optical port 2 through a screw 5. In contrast to the integrated form of the LC optical port 2 of the prior art, the flange 111 of the ROSA adapter 10 cannot be inserted into the LC optical port 2, so that in this embodiment a separate component, namely a locking assembly, is used for additional locking, and since this locking assembly is detachably connected to the LC optical port 2, it can be adjusted in position to ensure dimensional matching before final adhesive attachment. The specific locking mode is that a pressing block 4 and a screw 5 are adopted, and locking can be completed by pressing down the pressing block 4 and then screwing the pressing block 4 into a corresponding threaded hole of the LC light port 2 through the screw 5. Of course, in addition to this locking, other locking means are also possible, such as snap-in, magnetic, etc. Preferably, set up the confession on the LC optical port 2 the first draw-in groove 20 that the ring flange 111 of ROSA adapter 10 was gone into, briquetting 4 orientation one side of ROSA adapter 10 sets up the confession the second draw-in groove 40 that the ring flange 111 of ROSA adapter 10 was gone into, adopts first draw-in groove 20 with second draw-in groove 40 will ROSA adapter 10 is fixed, specifically, sets up first draw-in groove 20 on LC optical port 2, can supply ROSA adapter 10's ring flange 111 to go into, and the same position that corresponds at briquetting 4 sets up second draw-in groove 40, and first draw-in groove 20 and second draw-in groove 40 enclose and close the cell body structure that can block ROSA adapter 10's ring flange 111, and here because TOSA adapter 11 is fixed, it can not need the card of draw-in groove, of course can set up, can play better fixed effect after setting.

second card slots

Please refer to the first embodiment for other structures in the COB optical module, where a solution described in the first embodiment is identical to that of the second embodiment, and details are not repeated here.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a COB optical module, includes base, COB subassembly, its characterized in that: the COB assembly comprises a TOSA adapter, an optical engine, a PCBA board and a movable ROSA adapter, the TOSA adapter and the ROSA adapter are both mounted on the LC optical port, and the LC optical port and the COB assembly are both mounted on the base; COB optical module still includes demountable installation in locking subassembly on the LC optical port, the ROSA adapter with the TOSA adapter passes through the locking subassembly locking is in on the LC optical port.

2. The COB optical module of claim 1, characterized in that: the locking assembly includes a press block that can be capped onto the ROSA adapter, the press block being locked onto the LC optical port by a screw.

3. The COB optical module of claim 2, characterized in that: be equipped with the confession on the LC light mouthful first draw-in groove that the ring flange card of ROSA adapter goes into, the briquetting orientation one side of ROSA adapter is equipped with the confession the second draw-in groove that the ring flange card of ROSA adapter goes into, first draw-in groove with the second draw-in groove encloses to close and forms and to block the cell body structure of ROSA adapter.

4. The COB optical module of claim 3, characterized in that: one sides of the first card slot and the second card slot, which are close to the electric port of the optical module, are provided with limiting surfaces for limiting the ROSA adapter to be separated.

5. The COB optical module of claim 3, characterized in that: first draw-in groove with the second draw-in groove all has two, and two first draw-in groove and two the second draw-in groove all is a style of calligraphy side by side and arranges, TOSA adapter card goes into another first draw-in groove and another second draw-in groove.

6. The COB optical module of claim 2, characterized in that: one side of the pressing block, which faces the ROSA adapter, is also provided with a convex rib which can be clamped into a groove on the LC light port.

7. The COB optical module of claim 2, characterized in that: the pressing block is provided with a first cambered surface for embedding a part of cambered surface of the ROSA adapter, the LC light port is provided with a second cambered surface for embedding a part of cambered surface of the ROSA adapter, and the first cambered surface and the second cambered surface enclose to form a ring body structure capable of fixing a cylinder structure of the ROSA adapter.

8. The COB optical module of claim 7, characterized in that: the first cambered surface with the second cambered surface all has two, and two first cambered surface and two the second cambered surface all is a style of calligraphy side by side and arranges, the partial cambered surface of TOSA adapter imbeds in another one first cambered surface and another second cambered surface.

9. The COB optical module of claim 1, characterized in that: the ROSA adapter is connected to the PCBA board by a flexible optical fiber.

10. The COB optical module of claim 1, characterized in that: the LC light port and the COB assembly are both adhered to the base.