CN212083742U

CN212083742U - Optical module

Info

Publication number: CN212083742U
Application number: CN202020981478.8U
Authority: CN
Inventors: 杨柳; 陈金磊; 张强; 杨世海
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-12-04
Anticipated expiration: 2030-06-02

Abstract

The application discloses optical module includes lower casing and the circuit board that forms the parcel cavity with last casing. The circuit board is provided with an LED lamp. LED lamps are used to emit light of different colors. The first end of the light guide column is arranged corresponding to the LED lamp and used for transmitting light emitted by the LED lamp. The handle is arranged at one end of the lower shell, corresponds to the second end of the light guide column and is provided with a display layer. The display layer is used for reflecting light emitted by the LED lamp. The LED lamp emits light with corresponding colors according to the state of the optical module, the light guide column transmits the light emitted by the LED lamp, and the display layer of the handle reflects the colors corresponding to the light emitted by the LED lamp. In this application, the display layer of LED lamp, leaded light post and handle transmits the light transmission of the corresponding colour of the corresponding optical module state that the LED lamp sent to the display layer reflection of handle for can directly judge the state of optical module according to the colour on display layer directly, directly obtain the fault message of optical module promptly.

Description

Optical module

Technical Field

The application relates to the technical field of optical fiber communication, in particular to an optical module.

Background

In the ONU optical module, the transmitting end may report a failure mode through the MCU: transmit off (TXDisable). And the receiving end can report a fault mode through the MCU: the received optical signal is too small to be detected (RXLoss of signal).

When the optical module has the fault, a specific program is needed to be used for performing certain authority login and related operations to acquire the state of the optical module, so that the fault information of the optical module cannot be directly acquired.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module, which can directly acquire fault information of the optical module.

A light module, comprising:

the lower shell and the upper shell form a packaging cavity;

the circuit board is positioned in the packaging cavity and is provided with an LED lamp;

the LED lamp is used for emitting light with different colors;

the first end of the light guide column is arranged corresponding to the LED lamp and is used for transmitting light emitted by the LED lamp;

the handle is arranged at one end of the lower shell, corresponds to the second end of the light guide column and is provided with a display layer;

and the display layer is used for reflecting the light emitted by the LED lamp.

Has the advantages that: the application provides an optical module, include with last casing form a parcel cavity lower casing and be located the circuit board of parcel cavity midbody. The circuit board is provided with an LED lamp. And the LED lamp is used for emitting light with different colors. The first end of the light guide column is arranged corresponding to the LED lamp and used for transmitting light emitted by the LED lamp. The handle is arranged at one end of the lower shell, corresponds to the second end of the light guide column and is provided with a display layer. And the display layer is used for reflecting the light emitted by the LED lamp. In the use process, the LED lamp emits light with different colors according to the state of the optical module, the light guide column transmits the light emitted by the LED lamp, and the display layer of the handle reflects the color corresponding to the light emitted by the LED lamp. When the color reflected by the display layer on the handle is green, the optical module works normally; when the color reflected by the display layer on the handle is red, the received signal is lost; when the color reflected by the display layer on the handle is yellow, the emission is turned off. In this application, the display layer of LED lamp, leaded light post and handle transmits the light transmission of the corresponding colour of the corresponding optical module state that the LED lamp sent to the display layer reflection of handle for can directly judge the state of optical module according to the colour on display layer directly, directly obtain the fault message of optical module promptly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal;

fig. 2 is a schematic structural diagram of an optical network terminal;

fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure;

fig. 4 is an exploded structural diagram of an optical module according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an optical module after an upper housing and a lower housing are separated according to an embodiment of the present application;

FIG. 6 is an angled cross-sectional view of FIG. 5;

FIG. 7 is a cross-sectional view at another angle of FIG. 5;

fig. 8 is a cross-sectional view of a portion of an optical module provided in an embodiment of the present application;

fig. 9 is a light-emitting schematic diagram of an LED lamp according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

In the following, some embodiments of the present application will be described in detail with reference to the drawings, and features in the following examples and examples may be combined with each other without conflict.

One of the core links of optical fiber communication is the interconversion of optical and electrical signals. The optical fiber communication uses optical signals carrying information to transmit in information transmission equipment such as optical fibers/optical waveguides, and the information transmission with low cost and low loss can be realized by using the passive transmission characteristic of light in the optical fibers/optical waveguides; meanwhile, the information processing device such as a computer uses an electric signal, and in order to establish information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer, it is necessary to perform interconversion between the electric signal and the optical signal.

The optical module realizes the function of interconversion of optical signals and electrical signals in the technical field of optical fiber communication, and the interconversion of the optical signals and the electrical signals is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on an internal circuit board of the optical module, and the main electrical connection comprises power supply, I2C signals, data signals, grounding and the like; the electrical connection mode realized by the gold finger has become the mainstream connection mode of the optical module industry, and on the basis of the mainstream connection mode, the definition of the pin on the gold finger forms various industry protocols/specifications.

Fig. 1 is a schematic diagram of connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes the interconnection among the optical network terminal 100, the optical module 200, the optical fiber 101 and the network cable 103;

one end of the optical fiber 101 is connected with a far-end server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the far-end server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical network terminal 100 having the optical module 200.

An optical port of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; an electrical port of the optical module 200 is externally connected to the optical network terminal 100, and establishes bidirectional electrical signal connection with the optical network terminal 100; the optical module realizes the interconversion of optical signals and electric signals, thereby realizing the establishment of information connection between the optical fiber and the optical network terminal; specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100, and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input to the optical fiber.

The optical network terminal is provided with an optical module interface 102, which is used for accessing an optical module 200 and establishing bidirectional electric signal connection with the optical module 200; the optical network terminal is provided with a network cable interface 104, which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103; the optical module 200 is connected to the network cable 103 through the optical network terminal 100, specifically, the optical network terminal transmits a signal from the optical module to the network cable and transmits the signal from the network cable to the optical module, and the optical network terminal serves as an upper computer of the optical module to monitor the operation of the optical module.

At this point, a bidirectional signal transmission channel is established between the remote server and the local information processing device through the optical fiber, the optical module, the optical network terminal and the network cable.

Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal is an upper computer of the optical module, provides data signals for the optical module, and receives the data signals from the optical module, and the common upper computer of the optical module also comprises an optical line terminal and the like.

Fig. 2 is a schematic diagram of an optical network terminal structure. As shown in fig. 2, the optical network terminal 100 has a circuit board 105, and a cage 106 is disposed on a surface of the circuit board 105; an electric connector is arranged in the cage 106 and used for connecting an electric port of an optical module such as a golden finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a boss portion such as a fin that increases a heat radiation area.

The optical module 200 is inserted into the optical network terminal, specifically, the electrical port of the optical module is inserted into the electrical connector inside the cage 106, and the optical port of the optical module is connected to the optical fiber 101.

The cage 106 is positioned on the circuit board, and the electrical connector on the circuit board is wrapped in the cage, so that the electrical connector is arranged in the cage; the optical module is inserted into the cage, held by the cage, and the heat generated by the optical module is conducted to the cage 106 and then diffused by the heat sink 107 on the cage.

Fig. 3 is a schematic diagram of an optical module according to an embodiment of the present invention, and fig. 4 is a schematic diagram of an optical module according to an embodiment of the present invention. As shown in fig. 3 and 4, an optical module 200 provided by the embodiment of the present invention includes an upper housing 201, a lower housing 202, a circuit board 300, and an optical transceiver 400;

the upper shell 201 is covered on the lower shell 202 to form a wrapping cavity with two openings; the outer contour of the wrapping cavity is generally a square body, and specifically, the lower shell comprises a main plate and two side plates which are positioned at two sides of the main plate and are perpendicular to the main plate; the upper shell comprises a cover plate, and the cover plate covers two side plates of the upper shell to form a wrapping cavity; the upper shell can also comprise two side walls which are positioned at two sides of the cover plate and are perpendicular to the cover plate, and the two side walls are combined with the two side plates to realize that the upper shell covers the lower shell.

The two openings may be two openings located at the same end of the optical module, or two openings located at different ends of the optical module; one opening is an electric port, and a gold finger of the circuit board extends out of the electric port and is inserted into an upper computer such as an optical network terminal; the other opening is an optical port for external optical fiber access to connect the optical transceiver 400 inside the optical module; the photoelectric devices such as the circuit board 300 and the optical transceiver 400 are positioned in the packaging cavity.

The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the optical transceiver 400 and other devices can be conveniently installed in the shells, and the upper shell and the lower shell form the outermost packaging protection shell of the optical module; the upper shell and the lower shell are made of metal materials generally, so that electromagnetic shielding and heat dissipation are facilitated; generally, the housing of the optical module is not made into an integrated component, so that when devices such as a circuit board and the like are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component cannot be installed, and the production automation is not facilitated.

The circuit board 300 is provided with circuit traces, electronic components (such as capacitors, resistors, triodes, and MOS transistors), and chips (such as an MCU, a laser driver chip, a limiting amplifier chip, a clock data recovery CDR, a power management chip, and a data processing chip DSP).

The circuit board connects the electrical appliances in the optical module together according to the circuit design through circuit wiring to realize the functions of power supply, electrical signal transmission, grounding and the like.

The circuit board is generally a hard circuit board, and the hard circuit board can also realize a bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear a chip; when the optical transceiver is positioned on the circuit board, the rigid circuit board can also provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, and specifically, a metal pin/golden finger is formed on the surface of the tail end of one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.

A flexible circuit board is also used in a part of the optical module to supplement a rigid circuit board; the flexible circuit board is generally used in combination with a rigid circuit board, for example, the rigid circuit board may be connected to the optical transceiver device through the flexible circuit board.

The optical transceiver 400 includes two parts, namely an optical transmitter and an optical receiver, for transmitting and receiving optical signals, respectively. The light emitting component and the light receiving component provided by the embodiment of the application are combined together to form a light receiving and transmitting integrated component.

Fig. 5 is a schematic structural diagram of an optical module after an upper housing and a lower housing are separated according to an embodiment of the present application. Fig. 6 is an angled cross-sectional view of fig. 5. Fig. 7 is a cross-sectional view at another angle of fig. 5. Fig. 8 is a cross-sectional view of a portion of an optical module according to an embodiment of the present application. Fig. 9 is a light-emitting schematic diagram of an LED lamp according to an embodiment of the present application. As shown in fig. 4 to 9, the light module 200 in the embodiment of the present application is provided with a light guide bar 600 and a handle 700 in addition to the LED lamp 500 on the circuit board 300. In particular, the method comprises the following steps of,

the LED lamp 500 is disposed on the circuit board 300 and configured to emit light of different colors. Specifically, when both Transmission (TX) and Reception (RX) are operating normally, i.e., both the transmitting part and the receiving part of the optical module are operating normally, the LED lamp 500 emits green light. When the emission is off (TX Disable), the LED lamp 500 emits yellow light. When the received optical signal is lost (RX Loss of signal), the LED lamp 500 emits red light.

The light emitting principle of the LED lamp 500 is as follows: when the optical module is in a normal working state, that is, both the transmitting component and the receiving component of the optical module work normally, the TX Disable and RX Loss of signal in the optical module report low level respectively, the two control pins become high level after operation, and input into the Green end Green shown in fig. 9, at this time, the first triode BJT1 works in the amplification region to drive the first LED lamp 1 to emit Green light. When the module is in a TX Disable state, a TX Disable pin inside the module is in a high level, and at this time, the high level is simultaneously input to a RED end RED and a GREEN end GREEN, so that the first triode BJT1 and the second triode BJT2 simultaneously work in an amplification area to drive the second LED lamp LED 2 to emit RED light and the first LED lamp E lamp LED lamp 1 to emit GREEN light, and then the RED light and the GREEN light are mixed into yellow light. When the module is in an RX Loss of signal state, the TX Disable pin inside the module is at a high level, at this time, the high level is input to the RED end RED shown in fig. 9, and at this time, the second transistor BJT2 operates in the amplification region to drive the second LED lamp 2 to emit RED light.

Light guide column 600, first end and the corresponding setting of LED lamp 500, the second end corresponds the setting with handle 600 for the light that transmission LED lamp 500 sent. Specifically, the first end of the light guide bar 600 extends toward the circuit board, i.e., the first end of the light guide bar 600 extends downward and corresponds to the LED lamp 500 on the circuit board 300. The first end of the light guide bar 600 is used for receiving the light of different colors emitted by the LED lamp 500. The second end of the light guide bar 600 extends toward the upper case, that is, the second end of the light guide bar 600 extends upward and corresponds to the groove 2012 of the upper case 201, and the second end of the light guide bar 600 corresponds to the handle 700. The second end of the light guide bar 600 is used to transmit the light of different colors emitted from the LED lamp 500 to the handle 600.

The light guide bar 600 further includes a connection portion. And one end of the connecting part is connected with the first end of the light guide column 600, and the other end of the connecting part is connected with the second end of the light guide column 600 and used for connecting the first end of the light guide column 600 with the second end of the light guide column 600.

The first end of the light guide column 600 and the connecting part of the light guide column 600 form a 7-shaped structure, and the second end of the light guide column 600 and the connecting part of the light guide column 600 also form a 7-shaped structure.

The light guide column 600 is a light guide object obtained by printing light guide points on the bottom surface of an optical acrylic plate by using an optical acrylic/PC plate and then using a high-tech material with extremely high reflectivity and no light absorption through a UV screen printing technique. The first end of light guide column 600 utilizes the light that the acryl plate of optics level absorbs to send out from the LED lamp to the surperficial dwell of acryl plate of optics level, and when light struck each leaded light point, the reverberation can spread toward each angle, then destroys the reflection condition and jets out by the second end of light guide plate 600.

The handle 700 is disposed at one end of the lower case 202, and corresponds to the second end of the light guide bar 600. Specifically, the handle 700 is disposed at one end of the lower housing 202, which is an optical port end, and the other end is an electrical port end. The optical port end of the lower housing 202 includes two sidewalls. One end of each of the two side walls is extended to form a part, and the two extended parts form a supporting surface on which the handle 700 is placed. The handle 700 on the support surface receives the different colors of light emitted by the light pipe 600.

In order to reflect the received light with different colors emitted from the light guide bar 600, in the embodiment of the present application, a display layer is disposed on the handle 700. And a display layer for reflecting light emitted from the LED lamp 500. The display layer is a PC display layer, and the PC display layer comprises a white PC display layer and a transparent PC display layer. Since the PC display layer may be a white PC display layer or a transparent PC display layer, the received light emitted from the LED lamp may be reflected.

The handle 700 may be a cylinder or a rectangular parallelepiped. In order to make the display layer reflect the different colors of the LED lamp 500 as much as possible, when the shape of the handle 700 is a cylinder, the display layer is a hollow cylinder; when the shape of the handle 700 is a rectangular parallelepiped, the shape of the display layer is a hollow rectangular parallelepiped.

The user can determine the state of the light module according to the color reflected by the display layer on the handle 700. When the color reflected by the display layer on the handle 700 is green, the optical module works normally; when the color reflected by the display layer on the handle 700 is red, the received signal is lost; when the color reflected by the display layer on the handle 700 is yellow, the emission is turned off.

In order to make the display layer on the handle 700 display the light emitted from the LED 500 guided by the light guiding column 600, the display layer on the handle 700 and the port of the second end of the light guiding column 600 may or may not be located at the same horizontal position. Because the light is divergent, when the display layer on the handle 700 is slightly higher than the port of the second end of the light guide 600, the light emitted from the second end of the light guide 600 is directed upward toward the display layer on the handle 700. When the display layer on the handle 700 is slightly lower than the port of the second end of the light guide 600, the light emitted from the second end of the light guide 600 is directed downward toward the display layer on the handle 700. When the display layer on the handle 700 and the port of the second end of the light guide column 600 are located at the same horizontal position, the light emitted from the second end of the light guide column 600 is emitted to the display layer on the handle 700 in parallel. The above three situations can all be realized that the display layer on the handle 700 can display the light emitted by the LED lamp 500 guided by the light guide bar 600. Therefore, the present application is not limited thereto, and may be specifically designed according to specific situations.

As shown in fig. 4 to 8, in the embodiment of the present application, a boss 2011 is further disposed at one end of the upper casing 201, and a groove 2012 is disposed inside the boss 2011. The groove 2012 is used for fixing the light guide bar 600. Specifically, the groove 2012 is coated with a bonding adhesive, and the bonding adhesive bonds the second end of the light guide bar 600 in the groove 2012.

Because there is an error in the manufacturing process, the bonding of the second end of the light guide bar 600 in the groove 2012 includes: the port at the second end of the light guide bar 600 may be located in the groove 2012, may be flush with the port of the groove 2012, and may extend out along the port of the groove 2012.

When the port of the second end of the light guide bar 600 is located in the groove 2012, the port of the second end of the light guide bar 600 is located at the right side of the port of the groove 2012. When the port of the second end of the light guide bar 600 is flush with the port of the groove 2012, the port of the second end of the light guide bar 600 and the port of the groove 2012 are in the same vertical position. When the second end of the light guide bar 600 extends out along the port of the groove 2012, the port of the second end of the light guide bar 600 is located at the left side of the port of the groove 2012. The position relation of the port of the second end of the above several kinds of light guide columns 600 and the port of the groove 2012 can realize that the second end of the light guide column 600 is fixed in the groove 2012, therefore, the application is not limited, and the specific design can be carried out according to specific conditions.

The groove 2012 may be arcuate, U-shaped, or V-shaped. Reference may be made specifically to the shape of the second end of the light guide 600. When the second end of the light guide bar 600 is shaped like a cylinder, the groove 2012 is shaped like a semi-circular arc. When the second end of the light guide bar 600 is a rectangular parallelepiped, the groove 2012 is U-shaped. When the second end of the light guide bar 600 has a cone shape, the groove 2012 has a V-shape.

In order to allow the second end of the light guide 600 to be embedded into the groove 2012, the size of the groove 2012 is larger than the size of the second end of the light guide 600. To securely fix the second end of the light guide 600 within the groove 2012, the size of the groove 2012 can be matched to the size of the second end of the light guide 600.

To better secure the light guide bar 600, one sidewall of the lower housing 202 is used to secure the light guide bar 600. Specifically, a protrusion is disposed on an inner side of one sidewall of the lower case 202, and the protrusion is used to fix the light guide bar 600. Wherein the sidewall is a sidewall near the light guide bar 600. The second end of the light guide column 600 is bonded in the groove 2011, and one end of the connecting part of the light guide column 600 close to the second end of the light guide column 600 is arranged on the protrusion to fix the connecting part of the light guide column 600.

The application provides an optical module, include with last casing form a parcel cavity lower casing and be located the circuit board in the parcel cavity. The circuit board is provided with an LED lamp. And the LED lamp is used for emitting light with different colors. The first end of the light guide column is arranged corresponding to the LED lamp and used for transmitting light emitted by the LED lamp. The handle is arranged at one end of the lower shell, corresponds to the second end of the light guide column and is provided with a display layer. And the display layer is used for reflecting the light emitted by the LED lamp. In the use process, the LED lamp emits light with corresponding colors according to the state of the optical module, the light guide column transmits the light emitted by the LED lamp, and the display layer of the handle reflects the color corresponding to the light emitted by the LED lamp. When the color reflected by the display layer on the handle 700 is green, the optical module works normally; when the color reflected by the display layer on the handle 700 is red, the received signal is lost; when the color reflected by the display layer on the handle 700 is yellow, the emission is turned off. In this application, the display layer of LED lamp, leaded light post and handle transmits the light transmission of the corresponding colour of the corresponding optical module state that the LED lamp sent to the display layer reflection of handle for can directly judge the state of optical module according to the colour on display layer directly, directly obtain the fault message of optical module promptly.

The same and similar parts among the embodiments in the specification are referred to each other. It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A light module, comprising:

the lower shell and the upper shell form a packaging cavity;

the LED lamp is used for emitting light with different colors;

the display layer is used for reflecting light emitted by the LED lamp.

2. The light module of claim 1, wherein the display layer comprises a white PC display layer and a transparent PC display layer.

3. The optical module according to claim 1, wherein a boss is provided at one end of the upper housing, and a groove is provided inside the boss;

the groove is used for fixing the light guide column.

4. The light module of claim 3, wherein the first end of the light guide bar extends toward the circuit board corresponding to the LED light on the circuit board.

5. The light module of claim 3, wherein the second end of the light guide bar extends toward the upper housing corresponding to the groove.

6. The light module of claim 5, wherein the light guide further comprises a connection portion;

one end of the connecting part is connected with the first end of the light guide column, and the other end of the connecting part is connected with the second end of the light guide column.

7. The optical module of claim 1, wherein the lower housing is provided with a sidewall;

the side wall is used for fixing the light guide column.