CN203072303U

CN203072303U - Optical module

Info

Publication number: CN203072303U
Application number: CN 201220646036
Authority: CN
Inventors: 胡丹; 赵敬平; 饶一峰
Original assignee: Raisecom Technology Co Ltd
Current assignee: Raisecom Technology Co Ltd
Priority date: 2012-11-29
Filing date: 2012-11-29
Publication date: 2013-07-17
Anticipated expiration: 2022-11-29

Abstract

The utility model discloses an optical module which comprises a circuit board and two module interfaces which form optical-path and/or circuit connection with the circuit board, and the optical module further comprises a shielding cover, wherein the shielding cover is fixed on the circuit board, forms a casing having an opening on the front end surface with the circuit board and forms an electrical path with a circuit ground of the circuit board. The embodiment of the utility model can satisfy the requirements for electrostatic protection in industrial communication application scenarios.

Description

A kind of optical module

Technical field

The utility model relates to a kind of optical module, relates in particular to a kind of optical module with good antistatic protection function, belongs to the optical communication technique field.

Background technology

Demand along with the development of industrial communication equipment, its port form has begun the development from serial ports toward Ethernet interface, wherein because Electro Magnetic Compatibility (the Electro Magnetic Compatibility of optical interface, EMC) characteristic and distance factor, make it in industrial communication equipment, obtain using widely, and optical interface is generally and carries out the mutual interface of signal in the optical module, optical interface as the light transmitting terminal transmits the light signal that converted to by the signal of telecommunication by optical fiber, and normally receive light signal as the optical interface of receiving terminal, be sent to subsequent conditioning circuit then and convert the signal of telecommunication to; Generally speaking, optical interface uses in pairs.Optical module has the interface packing forms of multiple standards, and for example, packing forms commonly used is in industrial communication equipment at present: the optical interface of 1 * 9 ST.

Because the scene factor that industrial communication equipment uses, its requirement to aspects such as anti-interference, reliabilities is very high, especially EMC is required very high, even in the electrostatic test process, need the requirement satisfied all very high.At present, the optical interface module of the optical module on the market, especially 1 * 9 ST all is difficult to the electrostatic defending requirement that reaches good under situation about being left intact.

The utility model content

The technical problems to be solved in the utility model provides a kind of optical module, and it can satisfy the electrostatic defending requirement of industrial communication application scenarios.

The utility model is achieved through the following technical solutions:

A kind of optical module, comprise wiring board, two module interfaces that are connected with formation light path and/or circuit between the described wiring board, described optical module also comprises: radome, described radome is fixed on described wiring board top, form the housing of front end face opening with described wiring board, and with the circuit ground formation electric pathway of wiring board.

Preferably, described wiring board is provided with several and forms the welding hole that is electrically connected with the circuit ground of wiring board, the corresponding position, lower edge of described radome is provided with several lower process, described radome is fixed on described wiring board top, and with the circuit ground formation electric pathway of wiring board is further: described several lower process are welded respectively be fixed to described welding hole.

Preferably, described radome surface is provided with louvre.

Preferably, described module interface further comprises: connecting interface and collet, described connecting interface is the outer joint that draws of previously selected standard packaging form, and light is carried out in one end and outside and/or the signal of telecommunication is mutual, the other end directly is fixed on the collet, described collet area is greater than the outer rim area of described jointing, and it is provided with the through hole identical with described jointing outer rim size.

More preferably, described collet is square outer rim.

More preferably, described standard packaging form is: 1 * 9ST.

More preferably, described optical module also comprises: the overlap joint reed, and described overlap joint reed is the cuboid of an end opening, contacts with described collet as the faying surface of bottom surface, and it is provided with the through hole that allows described jointing to pass through, and the top, side of described overlap joint reed and external panel are near crimping.

More preferably, the side of described overlap joint reed is dentalation;

Described dentalation top is outer folded structure;

The knuckle of described outer folded structure is less than 90 degree.

Compared with prior art, the optical module of the utility model embodiment proposition has following remarkable advantage:

(1) optical module of the utility model embodiment proposition not only can solve electromagnetic radiation harassing and wrecking problem by the spatial masking mode, the static on all right leadage circuit plate, thereby the EMC performance of improvement system, the electrostatic defending performance of raising optical module interface;

(2) the optical module building block of the utility model embodiment proposition is few, simple in structure, with low cost, the practicality height.

Description of drawings

Fig. 1 is the external structure schematic diagram of the optical module of the utility model embodiment;

Fig. 2 is the external structure schematic diagram that does not contain the optical module that overlaps reed of the utility model embodiment;

Fig. 3 is the structural representation of the radome of the utility model embodiment;

Fig. 4 is the structural representation of the overlap joint reed of the utility model embodiment;

Fig. 5 is the side schematic view after the optical module of the utility model embodiment is assembled.

Embodiment

Describe execution mode of the present utility model in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the utility model whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.

With reference to shown in Figure 1, be the optical module structural representation of the utility model embodiment, described optical module comprises: wiring board (not shown in figure 1), radome 100, two module interfaces 200 and overlap joint reed 300; Wherein:

Described wiring board, according to realizing that business need is designed, ad-hoc location can be provided with as required with the circuit ground of described wiring board and form the welding hole that is electrically connected on it;

Described radome 100 is fixed on described wiring board top, with the housing of described wiring board formation front end face opening.Exemplary, described radome is that a cross section is U-shaped structure, as shown in Figure 3, a plurality of positions, the lower edge of two sides are provided with lower process 1001, the welding hole (not shown) position that arranges on the position of described lower process 1001 and the described wiring board is corresponding, and both welding when being used for installing is fixed; The end face of described radome 100 and side all can be provided with among louvre 1002(Fig. 1 and Fig. 2 not shown), the shape of louvre can be circular or other shapes, it is used for the heat radiation of optical module;

Described module interface 200, be used for described optical module internal wiring and carry out communicating by letter of light and/or the signal of telecommunication with outside line, it comprises: connecting interface 2001 with and the collet 2002 that is connected with described connecting interface 2001, described connecting interface is the outer joint that draws of previously selected standard packaging form, exemplarily, with reference to illustrated in figures 1 and 2, it for example has that the packing forms shown in the figure is 1 * 9ST, and the other end of described connecting interface directly is fixed on the described collet 2002; Described collet 2002 is preferably square floor, and area is greater than the outer rim area of described connecting interface 2001, and it is provided with the through hole identical with described connecting interface 2001 outer rims size;

Described overlap joint reed 300 is the cuboid of an end opening, its length can and two sides of described radome 100 between distance approach, the side height of its width and described radome 100 approaches, as shown in Figure 4, the bottom surface of described overlap joint reed 300 is the faying surface 3001 that contacts with described collet 2002, it is provided with two through holes 3002 that allow described connecting interface 2001 to pass through, and the top, side of described overlap joint reed 300 and external panel are near crimping; The edge of the side of described overlap joint reed 300 preferably is arranged to dentalation 3003, and more preferably, described tooth is rectangular teeth, and outermost end forms outer folded structure, and described knuckle is less than 90 °.

With reference to shown in Figure 5, above-mentioned optical module is when assembling, at first two described connecting interfaces 2001 are connected and fixed with described wiring board 400 according to design in advance, thereby form optical module inside and outside signal exchange channels, be respectively applied to input and the output of external optical signal, described connecting interface 2001 is the standard packaging form, described radome 100 directly is buckled on the described wiring board 400, and the lower process 1001 that arranges on it inserts respectively in the predetermined welding hole on the described wiring board 400, make described radome 100 and described wiring board 400 relative fixed, and described radome 100 provides space electromagnetic shielding effectively for described wiring board 400; Described overlap joint reed 300 is enclosed within on the described connecting interface 2001 by the through hole 3002 that is arranged on the faying surface 3001; contact with described collet 2002 surfaces until faying surface 3001; then the installation of this optical module by wiring board 400 combined with its application scenarios; for example; be installed in certain cabinet; the panel of protecting for optical module 500 is installed then; described panel 500 can be that for example described optical module is installed the whole front panel of cabinet; it also can be the panel that independently arranges for single optical module; it need be fixable getting final product for the position of optical module; described panel 500 inboards directly contact with the rectangular teeth of described overlap joint reed 300; described dentalation has elasticity preferably; make both can guarantee to produce extruding force and overlap joint reliability preferably when pressing contact; make also that simultaneously the formation large tracts of land well contacts between faying surface 3001 and the collet 2002 of described overlap joint reed 300; and described collet 2002 directly is close to radome, also makes via radome 100; wiring board 400 forms reliable electrostatic leakage passage.

This shows, the optical module that the utility model embodiment proposes not only can solve electromagnetic radiation harassing and wrecking problem by the spatial masking mode, static on all right leadage circuit plate, thereby the Electro Magnetic Compatibility of improvement system, the electrostatic defending performance of raising optical module interface; In addition, the optical module building block that the utility model embodiment proposes is few, simple in structure, with low cost, the practicality height.

Also need supplementary notes what time following for above-described embodiment:

(1) among the embodiment of the present utility model, radome 100 and wiring board 500 are to adopt the form of welding fixing, in other implementations, also can adopt the release implementation of path of other formation, for example, be threaded to form the path of releasing by conductive;

(2) in embodiment of the present utility model, the shape of collet 200 can be not limited only to exemplified square, and it can be set to Any shape as required, but it is pointed out that its area is more big, and the electrostatic defending performance that can form is more good;

(3) in embodiment of the present utility model, the external dimensions of overlap joint reed 300 is unqualified, but the contact area of itself and collet is more big, and the electrostatic defending performance that can form is more good.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of claim of the present utility model.

Claims

1. optical module, comprise wiring board, two module interfaces that are connected with formation light path and/or circuit between the described wiring board, it is characterized in that, described optical module also comprises: radome, described radome is fixed on described wiring board top, forms the housing of front end face opening with described wiring board, and with the circuit ground formation electric pathway of wiring board.

2. optical module as claimed in claim 1, it is characterized in that, described wiring board is provided with several and forms the welding hole that is electrically connected with the circuit ground of wiring board, the corresponding position, lower edge of described radome is provided with several lower process, described radome is fixed on described wiring board top, and with the circuit ground formation electric pathway of wiring board is further: described several lower process are welded respectively be fixed to described welding hole.

3. optical module as claimed in claim 1 is characterized in that, described radome surface is provided with louvre.

4. as any one described optical module among the claim 1-3, it is characterized in that, described module interface further comprises: connecting interface and collet, described connecting interface is the outer joint that draws of previously selected standard packaging form, and light is carried out in one end and outside and/or the signal of telecommunication is mutual, the other end directly is fixed on the collet, and described collet area is greater than the outer rim area of described jointing, and it is provided with the through hole identical with described connecting interface outer rim size.

5. optical module as claimed in claim 4 is characterized in that, described collet is square outer rim.

6. optical module as claimed in claim 4 is characterized in that, described standard packaging form is: 1 * 9ST.

7. optical module as claimed in claim 4, it is characterized in that, described optical module also comprises: the overlap joint reed, described overlap joint reed is the cuboid of an end opening, faying surface as the bottom surface contacts with described collet, and it is provided with the through hole that allows described connecting interface to pass through, and the top, side of described overlap joint reed and external panel are near crimping.

8. optical module as claimed in claim 7 is characterized in that, the side of described overlap joint reed is dentalation.

9. optical module as claimed in claim 8 is characterized in that, described dentalation top is outer folded structure.

10. optical module as claimed in claim 9 is characterized in that, the knuckle of described outer folded structure is less than 90 degree.