CN212723466U

CN212723466U - Optical lens assembly of optical module

Info

Publication number: CN212723466U
Application number: CN202021431447.1U
Authority: CN
Inventors: 彭蒙
Original assignee: Tri Light Wuhan Electronics Technology Co ltd
Current assignee: Tri Light Wuhan Electronics Technology Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-16
Anticipated expiration: 2030-07-20

Abstract

The utility model relates to an optical lens subassembly of optical module, including optical fiber ribbon, the PCB board that has MT lock pin and the optical lens module of setting on the PCB board, optical lens module one end be equipped with the socket of MT lock pin adaptation, the other end are the light mouthful side, and the both sides of the diapire of this socket are equipped with the lens reference column respectively, corresponding be equipped with on the MT lock pin with the complex locating hole is pegged graft to the lens reference column, the MT lock pin inserts in the socket, just the lens reference column inserts correspondingly in the locating hole, still include the sheet metal cover body, the sheet metal cover body block in on MT lock pin and the optical lens module to make the two zonulae occludens. The advantages are that: structural design is reasonable, replaces the mode that needs the point to glue fixedly among the prior art after MT lock pin and the optical lens module location are pegged graft through mechanical fixed mode, and the two is connected inseparabler, reliably, is difficult for breaking away from.

Description

Optical lens assembly of optical module

Technical Field

The utility model relates to an optical module technical field, a special design optical lens subassembly of optical module.

Background

With the rapid development of the optical communication industry, the market demand for high-speed optical modules is increasing. In response to the market demand for high bandwidth and high rate data transmission, module design is increasingly being developed in the direction of miniaturization and high density. In a high-speed optical module multichannel parallel scheme, an MT (multi-terminal) ferrule and an optical lens are usually used as coupling and butt joint elements, the traditional MT ferrule and the optical lens are connected by using a dispensing scheme, glue needs to be baked, the production process time is long, the operation is complex, meanwhile, the glue is aged after long-term work, and the reliability risk also exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an optical lens subassembly of optical module is provided, the effectual defect of overcoming prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides an optical lens subassembly of optical module, including the optical fiber ribbon that has MT lock pin, PCB board and the optical lens module of setting on the PCB board, above-mentioned optical lens module one end is equipped with the socket with above-mentioned MT lock pin adaptation, the other end is the light mouth side, the both sides of the diapire of this socket are equipped with the lens reference column respectively, be equipped with on the corresponding above-mentioned MT lock pin with above-mentioned lens reference column grafting complex locating hole, above-mentioned MT lock pin inserts in above-mentioned socket, and above-mentioned lens reference column inserts in the above-mentioned locating hole that corresponds, still include the panel beating cover body, above-mentioned panel beating cover body block is on above-mentioned MT lock pin and.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the above-mentioned sheet metal cover body is the open cover body in one end and one side, above-mentioned optical lens module both sides protrusion respectively are equipped with the fixture block, be equipped with the bayonet socket that corresponds with above-mentioned fixture block on the relative both sides lateral wall of corresponding above-mentioned sheet metal cover body respectively, be equipped with the breach that supplies above-mentioned optical fiber ribbon to pass on the lateral wall of above-mentioned sheet metal cover body opposite side, the open side of one end of the above-mentioned sheet metal cover body is towards above-mentioned PCB board to cover above-mentioned MT lock pin and optical lens module, and above-mentioned fixture block stretches into in the above-mentioned bayonet socket that corresponds and block each other, the tip in above-mentioned MT lock.

Furthermore, a wave absorbing member for absorbing and reducing electromagnetic wave leakage at the optical port side of the optical lens module is arranged on the PCB corresponding to the optical lens module.

Furthermore, the lens positioning column is a metal cylindrical component, and the corresponding positioning hole is matched with the round hole.

The utility model has the advantages that: structural design is reasonable, replaces the mode that needs the point to glue fixedly among the prior art after MT lock pin and the optical lens module location are pegged graft through mechanical fixed mode, and the two is connected inseparabler, reliably, is difficult for breaking away from.

Drawings

Fig. 1 is a schematic structural diagram of an optical lens assembly of an optical module according to the present invention;

fig. 2 is an exploded view of the sheet metal cover of the optical lens assembly of the optical module according to the present invention;

fig. 3 is a schematic structural diagram of an MT ferrule and an optical lens module in an optical lens assembly of an optical module according to the present invention;

FIG. 4 is a schematic structural view of a lens positioning post and a positioning hole after an MT ferrule and an optical lens module are connected in the prior art;

fig. 5 is a schematic structural diagram of the optical module according to the present invention, in which the MT ferrule is connected to the optical lens module, and the lens positioning post is matched with the positioning hole.

In the drawings, the components represented by the respective reference numerals are listed below:

1. MT lock pin, 2, optical fiber ribbon, 3, PCB board, 4, optical lens module, 5, the panel beating cover body, 6, inhale ripples component, 41, lens reference column, 42, fixture block.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example (b): as shown in fig. 1 and 2, the optical lens assembly of the optical module of this embodiment includes an optical fiber ribbon 2 with an MT ferrule 1, a PCB 3, and an optical lens module 4 disposed on the PCB 3, wherein one end of the optical lens module 4 is provided with a socket adapted to the MT ferrule 1, the other end is an optical port side, two sides of a bottom wall of the socket are respectively provided with a lens positioning post 41, the corresponding MT ferrule 1 is provided with a positioning hole in plug-in fit with the lens positioning post 41, the ferrule MT 1 is inserted into the socket, and the lens positioning post 41 is inserted into the corresponding positioning hole, and the optical lens assembly further includes a sheet metal cover 5, and the sheet metal cover 5 is clamped on the MT ferrule 1 and the optical lens module 4 so as to tightly connect the two.

The structure composition of the optical transparent module 4 is basically the same as that of the existing optical module, and belongs to the product in the prior art, and the internal structure thereof is not described herein.

The whole assembly replaces the connection mode of glue dispensing after the MT inserting core 1 and the optical lens module 4 are inserted in the prior art by the sheet metal cover body 5, so that the MT inserting core 1 and the optical transparent module 4 are connected tightly and stably, the problems of the prior art that glue dispensing operation needs baking, the production process time is long, the operation is complicated, meanwhile, the glue is aged after long-term work, and the reliability risk also exists are solved,

as a preferred embodiment, as shown in fig. 2, the sheet metal cover 5 is a cover with one end and one side open, two sides of the optical lens module 4 are respectively protruded with a fixture block 42, corresponding opposite side walls of the sheet metal cover 5 are respectively provided with a bayonet corresponding to the fixture block 42, the other side wall of the sheet metal cover 5 is provided with a notch for the optical fiber ribbon 2 to pass through, one end open side of the sheet metal cover 5 faces the PCB 3 and covers the MT ferrule 1 and the optical lens module 4, the fixture blocks 42 extend into the corresponding bayonet and are engaged with each other, the other side wall of the sheet metal cover 5 is engaged with the end of the MT ferrule 1, and the optical fiber ribbon 2 is embedded into the notch.

In this embodiment, the three side walls of the sheet metal cover body 5 adopt a split type design, that is, the end portions of the three side walls are not connected, and have a certain elastic deformation, when the sheet metal cover body is clamped with the optical lens module 4 and the MT ferrule 1, the side walls with bayonets on both sides slide over the clamping blocks 42 on both sides of the optical transparent module 4, so that the side walls with bayonets on both sides slide into the corresponding bayonets quickly 42, and the clamping is completed.

In a preferred embodiment, a wave absorbing member 6 for absorbing and reducing electromagnetic wave leakage at the optical port side of the optical lens module 4 is provided at a portion of the PCB 3 corresponding to the optical lens module 4, and the wave absorbing member 6 can improve EMI performance of the optical module.

In a preferred embodiment, the lens positioning post 41 is a metal cylindrical member, and the corresponding positioning hole is a circular hole matched with the positioning hole.

In this embodiment, compared with the prior art (as shown in fig. 4), the carrier of the optical lens module 4 of the prior art uses all plastics, the positioning column and the carrier are integrally injection-molded, the positioning column is limited by the mold process, the mold needs to be drawn, and the length of the positioning column is too long, which may cause the problem of deformation, so that the positioning column of the lens is not high in the matching precision with the MT ferrule hole (i.e. there is a gap S between the positioning column surface and the positioning hole, S in fig. 4), and in this technology, the lens positioning column 41 is a metal cylinder, without a drawing angle, the left and right diameters are the same, and the matching clearance with the positioning hole is small (as shown in fig. 5), and through bijection molding, the.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an optical lens subassembly of optical module, is including having optic fibre area (2) of MT lock pin (1), PCB board (3) and setting optical lens module (4) on PCB board (3), optical lens module (4) one end be equipped with the socket of MT lock pin (1) adaptation, the other end is the light mouth side, and the both sides of the diapire of this socket are equipped with lens reference column (41) respectively, and is corresponding be equipped with on MT lock pin (1) with lens reference column (41) grafting complex locating hole, MT lock pin (1) inserts in the socket, just lens reference column (41) insert correspond in the locating hole, its characterized in that: still include the panel beating cover body (5), the panel beating cover body (5) block in on MT lock pin (1) and optical lens module (4) to make the two zonulae occludens.

2. The optical lens assembly of a light module as claimed in claim 1, wherein: the utility model discloses a light-emitting device, including the panel beating cover body (5), the panel beating cover body (5) is the open cover body in one end and one side, optical lens module (4) both sides protrusion respectively are equipped with fixture block (42), and are corresponding be equipped with respectively on the relative both sides lateral wall of panel beating cover body (5) with the bayonet socket that fixture block (42) correspond, be equipped with the confession on the panel beating cover body (5) opposite side lateral wall the breach that optical fiber ribbon (2) passed, the one end of the panel beating cover body (5) is uncovered side orientation PCB board (3), and cover MT lock pin (1) and optical lens module (4), just fixture block (42) stretch into correspondingly in the bayonet socket and block each other, the panel beating cover body (5) opposite side lateral wall laminate in the tip of MT lock pin (1), just optical fiber ribbon (2).

3. An optical lens assembly of a light module according to claim 1 or 2, characterized in that: and a wave absorbing member (6) for absorbing and reducing electromagnetic wave leakage at the optical port side of the optical lens module (4) is arranged on the PCB (3) corresponding to the optical lens module (4).

4. An optical lens assembly of a light module according to claim 1 or 2, characterized in that: the lens positioning column (41) is a metal cylindrical component, and the corresponding positioning hole is matched with a circular hole of the lens positioning column.