CN114384644A

CN114384644A - Optical module

Info

Publication number: CN114384644A
Application number: CN202011119907.1A
Authority: CN
Inventors: 何鹏; 刘旭霞; 杨思更
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2022-04-22

Abstract

The application provides an optical module, first lens subassembly and circuit board form the parcel cavity, supreme emission of light chip array that is equipped with in proper order from the circuit board direction in the parcel cavity, first collimation lens array, light multiplexing subassembly and first lens subassembly top surface have first plane of reflection and second plane of reflection, a plurality of emission of light chips in the emission of light chip array send the light of multibeam different wavelength, change propagation direction and light multiplexing subassembly through first plane of reflection and produce a branch of this light behind the ripples, this light passes through in the reflection of second plane of reflection to optic fibre, realize the signal light simultaneous transmission of a plurality of wavelengths in the single optical fiber. In the optical module provided by the application, the combination of a plurality of beams of signal light with different wavelengths is completed only through the first lens assembly and the optical multiplexing assembly arranged in the first accommodating cavity of the first lens assembly, so that the coupling precision when a plurality of channels are coupled in the optical module is improved.

Description

Optical module

Technical Field

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

Background

With the development of new services and application modes such as cloud computing, mobile internet, video and the like, the development and progress of the optical communication technology become increasingly important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals, and is one of key devices in optical communication equipment, and with the development of the optical communication technology, the transmission rate of the optical module is continuously increased, and the transmission rate can be increased by simultaneously transmitting optical signals with multiple wavelengths in a single-mode optical fiber, so that an optical module is needed to realize the simultaneous transmission of signal light with multiple wavelengths in a single optical fiber, and further increase the transmission rate.

Disclosure of Invention

The application provides an optical module which is convenient for realizing simultaneous transmission of signal lights with multiple wavelengths in a single optical fiber.

In a first aspect, the present application provides an optical module, including:

a circuit board;

the first lens component covers the light emitting chip array, the surface of the first lens component is provided with a first reflecting surface and a second reflecting surface, and the side surface of one end of the first lens component is provided with a limiting component;

the side surface of one end of the first optical fiber bracket is provided with a butt joint component, and the butt joint component is inserted into the limiting component;

the light emitting chip array is arranged on the surface of the circuit board and comprises a plurality of light emitting chips and a plurality of light emitting chips, wherein the light emitting chips are used for emitting a plurality of signal lights with different wavelengths;

the first collimating lens array is arranged between the light emitting chip array and the light multiplexing component, comprises a plurality of collimating lenses and is used for receiving the signal light from the light emitting chip and converging the signal light into parallel light;

the optical multiplexing assembly is arranged on the inner wall of the first lens assembly and used for receiving the signal light from the first collimating lens array, the signal light from each collimating lens is incident to different positions of the optical multiplexing assembly, and the optical multiplexing assembly and the first reflecting surface combine a plurality of beams of signal light with different wavelengths into a beam of signal light;

and the first converging lens array comprises a plurality of converging lenses, is used for receiving the signal light after the optical multiplexing component is combined, converging the signal light into converging light spots, and is coupled into the first optical fiber support.

In the optical module provided by the application, a first lens component and a circuit board form a containing cavity, the containing cavity is sequentially provided with a light emitting chip array, a first collimating lens array and a light multiplexing component from bottom to top, and the surface of the first lens component is provided with a first reflecting surface and a second reflecting surface, wherein the light emitting chip array comprises a plurality of light emitting chips, the light emitting chip array can emit a plurality of beams of signal light with different wavelengths, at the moment, the signal light is in a scattering state, parallel light is formed after collimated and focused by the first collimating lens array, the plurality of beams of parallel light with different wavelengths are transmitted to the light multiplexing component, a light beam with one wavelength is transmitted to the first reflecting surface through the light multiplexing component, is transmitted to the light multiplexing component through the total reflection of the first reflecting surface, and a light beam with the other wavelength is transmitted to the first reflecting surface after passing through the combined wave of the light multiplexing component, and is transmitted to the light multiplexing component through the total reflection of the first reflecting surface, the light beams with the other wavelength are transmitted to the first reflecting surface after being combined by the optical multiplexing component, so that the combination of a plurality of signal lights with different wavelengths is completed, a beam of signal light is finally generated, the signal light is reflected by the second reflecting surface and then transmitted into the optical fiber ribbon, and the signal lights with a plurality of wavelengths in the single optical fiber are simultaneously transmitted. In the optical module provided by the application, the combination of a plurality of beams of signal light with different wavelengths is completed only through the first lens assembly and the optical multiplexing assembly arranged in the first accommodating cavity of the first lens assembly, so that the coupling precision when a plurality of channels are coupled in the optical module is improved.

In a second aspect, the present application provides a light module comprising:

a limiting component is arranged;

a butt joint component is arranged on the side surface of one end of the second optical fiber bracket and inserted into the limiting component;

the second converging lens array comprises a plurality of converging lenses and is used for receiving the signal light from the second optical fiber support and converging the signal light to a third reflecting surface;

the optical demultiplexing assembly is arranged on the inner wall of the second lens assembly and is used for receiving the signal light from the third reflecting surface and dividing one signal light into a plurality of signal lights with different wavelengths together with the fourth reflecting surface;

the second collimating lens array is arranged between the light receiving chip array and the optical demultiplexing assembly, and comprises a plurality of collimating lenses for receiving the signal light emitted from different positions of the optical demultiplexing assembly and converging the signal light into parallel light;

the light receiving chip array is arranged on the surface of the circuit board and comprises a plurality of light receiving chips for receiving the signal light from the second collimating lens array.

In the optical module provided by the application, the second lens assembly and the circuit board form a second accommodating cavity, the light receiving chip array, the second collimating lens array and the optical demultiplexing assembly are sequentially arranged in the cavity from bottom to top, and the top surface of the second lens assembly is provided with a third reflecting surface and a fourth reflecting surface; one beam of signal light with different wavelengths outside the optical module is transmitted to the second lens assembly, the beam of signal light is transmitted to the optical demultiplexing assembly after being reflected by the third reflecting surface, wherein the light beam with one wavelength penetrates through the optical demultiplexing assembly, the light beam with the rest wavelength is reflected to the fourth reflecting surface and is reflected to the optical demultiplexing assembly by the fourth reflecting surface, the light beam with the other wavelength penetrates through the optical demultiplexing assembly, and the light beam with the rest wavelength is reflected to the fourth reflecting surface, so that the signal light with one beam of different wavelengths is demultiplexed into a plurality of beams of signal light with different wavelengths, and the signal light with the different wavelengths is sequentially transmitted to the light receiving chip in the light receiving chip array after passing through the second collimating lens array, and the function of receiving the signal light of the optical module with multiple wavelengths in the single optical fiber is realized. In the optical module provided by the application, only through the second lens assembly and the optical demultiplexing assembly arranged in the second accommodating cavity, one beam of beam splitting including signal light with different wavelengths is completed, and the coupling precision in the optical module during multi-channel coupling is improved.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

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 provided in an embodiment of the present application;

fig. 4 is an exploded structural schematic diagram of an optical module provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first optical module provided in the embodiment of the present application, after an upper housing, a lower housing, and an unlocking component are removed;

FIG. 6 is a perspective view of a first lens assembly provided in embodiments of the present application;

FIG. 7 is a schematic cross-sectional view of a first lens assembly according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram illustrating an exploded structure of a first lens assembly according to an embodiment of the present application;

FIG. 9 is a diagram illustrating a state of use of a first lens assembly according to an embodiment of the present application;

fig. 10 is a schematic diagram illustrating an operation of an optical multiplexing module according to an embodiment of the present disclosure;

fig. 11 is an exploded schematic structural diagram of a second optical module provided in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a second optical module provided in the embodiment of the present application, after an upper housing, a lower housing, and an unlocking component are removed;

FIG. 13 is a perspective view of a second first lens assembly provided by an embodiment of the present application;

FIG. 14 is a first schematic cross-sectional view illustrating a second first lens assembly according to an embodiment of the present disclosure;

FIG. 15 is an exploded view of a second first lens assembly according to an embodiment of the present disclosure;

fig. 16 is an exploded schematic structural diagram of a third optical module provided in the embodiment of the present application;

FIG. 17 is a schematic cross-sectional view illustrating a third lens assembly according to an embodiment of the present application;

FIG. 18 is a perspective view of a third first lens assembly provided in accordance with an embodiment of the present application;

FIG. 19 is a first exploded view of a third first lens assembly provided in accordance with an embodiment of the present application;

FIG. 20 is a second exploded view of a third first lens assembly provided in accordance with an embodiment of the present application;

FIG. 21 is an exploded block diagram of a second lens assembly according to an embodiment of the present application;

FIG. 22 is an exploded block diagram of yet another second lens assembly provided by an embodiment of the present application;

FIG. 23 is an exploded view of a second lens assembly according to an embodiment of the present application;

fig. 24 is a schematic diagram of an optical demultiplexing module according to an embodiment of the present disclosure.

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.

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 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 remote server, one end of the network cable 103 is connected with a local information processing device, and the connection between the local information processing device and the remote 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.

To this end, the remote server establishes a bidirectional signal transmission channel with the local information processing device through the optical fiber 101, the optical module 200, the optical network terminal 100, and the network cable 103.

Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal 100 is a host computer of the optical module 200, and provides a data signal to the optical module 200 and receives a data signal from the optical module 200, and a common host computer of the optical module 200 also includes 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 convex structure such as a fin for increasing a heat radiation area.

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

The cage 106 is positioned on the circuit board, enclosing the electrical connectors on the circuit board in the cage; the optical module 200 is inserted into a cage, the optical module 200 is held by the cage, and heat generated by the optical module 200 is conducted to the cage through an optical module case and finally diffused by a heat sink 107 on the cage.

Fig. 3 is a schematic structural diagram of an optical module 200 according to an embodiment of the present disclosure, and fig. 4 is an exploded structural diagram of the optical module 200 according to the embodiment of the present disclosure. As shown in fig. 3 and 4, an optical module 200 provided in an embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking member 203, and a circuit board 300.

The upper housing 201 is covered on the lower housing 202 to form a package cavity with two openings, and the outer contour of the package cavity is generally in a square shape. Specifically, the lower housing 202 includes a main board and two side boards located at two sides of the main board and arranged perpendicular to the main board; the upper shell 201 comprises a cover plate, and the cover plate covers two side plates of the upper shell 201 to form a wrapping cavity; the upper casing 201 may further include two side walls disposed at two sides of the cover plate and perpendicular to the cover plate, and the two side walls are combined with the two side plates to cover the upper casing 201 on the lower casing 202.

The two openings may be two ends (204, 205) in the same direction, or two openings in different directions; one of them opening is electric mouth 204, and the golden finger of circuit board 300 stretches out from electric mouth 204, inserts in host computer such as optical network terminal, and another opening is light mouth 205 for the inside optical transceiver of connecting optical module 200 is connected in order to outside optic fibre access, and photoelectric devices such as circuit board 300, optical transceiver are located the parcel cavity.

The upper shell 201 and the lower shell 202 are combined to facilitate the installation of devices such as the circuit board 300 and the like in the shells, and the upper shell 201 and the lower shell 202 form an outermost packaging protection shell of the optical module. The upper shell 201 and the lower shell 202 are generally made of metal materials, which is beneficial to realizing electromagnetic shielding and heat dissipation; generally, the housing of the optical module 200 is not integrated, so that when devices such as a circuit board are assembled, the positioning component, the heat dissipation structure and the electromagnetic shielding structure cannot be mounted, and the production automation is not facilitated.

The unlocking component 203 is located on the outer wall of the wrapping cavity/lower shell 202, and is used for realizing the fixed connection between the optical module and the upper computer or releasing the fixed connection between the optical module and the upper computer.

The unlocking component 203 is provided with a clamping structure matched with the upper computer cage; the end of the unlocking member 203 is pulled to make the unlocking member 203 relatively move on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping structure of the unlocking component 203; by pulling the unlocking member 203, the engaging structure of the unlocking member 203 moves along with the unlocking member, and further the connection relationship between the engaging structure and the upper computer is changed, so that the engaging relationship between the optical module and the upper computer is released, and the optical module can be drawn out from the cage of the upper computer.

The circuit board 300 is provided with a light emitting chip, a driving chip of the light emitting chip, a light receiving chip, a transimpedance amplifier chip, an amplitude limiting amplifier chip, a microprocessor chip, and the like, wherein the light emitting chip and the light receiving chip are directly attached to the circuit board of the optical module, and such a configuration is referred to as COB packaging in the industry.

The circuit board 300 connects the electrical appliances in the optical module together according to the circuit design through circuit wiring to realize the electrical functions of power supply, electrical signal transmission, grounding and the like; while circuit board 300 also functions to carry the various components, such as the lens assembly carried by the circuit board.

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; the rigid circuit board can also be inserted into an electric connector in the upper computer cage, and particularly, a metal pin/golden finger is formed on the surface of the tail end of one side of the rigid circuit board and used for being connected with the electric connector.

In the embodiment of the present application, the optical module further includes a lens assembly disposed on the circuit board 300. Specifically, the lens assembly and the circuit board 300 form a cavity for enclosing the light emitting chip array or the light receiving chip array, and the light emitting chip array or the light receiving chip array is located in the cavity. The lens assembly is used for transmitting the light beam and changing the transmission direction of the light beam in the transmission process. In use: the light emitted by the optical chip in the light emitting chip array is transmitted and reflected by the lens assembly and then enters the optical fiber; or, the light from the optical fiber is reflected by the lens assembly and enters the light receiving chip, and the lens assembly not only plays a role of sealing the optical chip, but also establishes optical connection between the optical chip and the optical fiber. The lens component covers the light emitting chip array or the light receiving chip array at the same time, so that the propagation direction of the signal light emitted by the light emitting chip or the signal light from the outside of the optical module can be changed conveniently by using fewer devices. In this embodiment, the light emitting chip array is covered by the lens assembly, or the light receiving chip array is covered by the lens assembly, or the light emitting chip array and the light receiving chip array are covered by the lens assembly respectively. Further, in the embodiment of the present application, the number of the lens assemblies may be 1, 2, or the like.

In the embodiment of the present application, the lens assembly may be disposed not only at one end of the circuit board 300 close to the optical port, but also at the middle portion of the circuit board 300, and may be specifically selected according to the actual needs of the optical module. In the embodiment of the application, the lens assembly is arranged above the light emitting chip array or the light receiving chip array in a covering mode; wherein: the light emitting chip array comprises a plurality of light emitting chips, each light emitting chip is generally used for emitting signal light with one wavelength, and the light emitting chip array is used for emitting a plurality of signal lights with different wavelengths; the light receiving chip array includes a plurality of light receiving chips, each of which is generally configured to receive signal light of one wavelength, and the light receiving chip array is further configured to receive different pluralities of signal light of different wavelengths. The light emitting chip array comprises 2, 3, 4 and the like light emitting chips, and the light receiving chip array comprises 2, 3, 4 and the like light receiving chips. Specifically, in the present application, the light emitting chips or the light receiving chips are arranged in an array structure, wherein one row of the light emitting chips or the light receiving chips arranged along the length direction of the circuit board is set as one group, a plurality of rows of the light emitting chips or the light receiving chips are arranged along the width direction of the circuit board, and a plurality of groups of the light emitting chips or the light receiving chips are set as a plurality of groups, and with respect to the definition of the length direction and the width direction of the circuit board, reference is made to fig. 4, in which the direction from left to right in fig. 4 is defined as the length direction of the circuit board, and from top to bottom is defined as the width direction of the circuit board.

In the present embodiment, two lens assemblies are included, and for convenience of description, one lens assembly is referred to as a first lens assembly, the other lens assembly is referred to as a second lens assembly, and further, the lens assembly covering the light emitting chip array is referred to as a first lens assembly, and the lens assembly covering the light receiving chip array is referred to as a second lens assembly.

Further, high-speed data transmission requires close arrangement between the optical chips and their driving/matching chips in the light emitting chip array or the light receiving module to shorten the connection between the chips and reduce signal loss caused by the connection, while when the lens assembly is covered over the optical chips, the lens assembly generally covers the optical chips and their driving/matching chips at the same time. The light emitting chip in the light emitting chip array and the driving chip of the light emitting chip are arranged in a close distance, and the lens component covers the light emitting chip and the driving chip of the light emitting chip; the light receiving chip and the transimpedance amplifier chip are arranged in the light receiving chip array in a close distance, and the lens component covers the light receiving chip and the transimpedance amplifier chip.

In order to transmit a plurality of signal lights with different wavelengths emitted by the light emitting chip array and receive the signal lights with different wavelengths received by the light receiving chip array, the embodiment of the present application includes other optical devices in cooperation with the lens assembly. The following is a detailed description of specific uses of the lens assembly.

The light emitting structure is explained below.

In a first embodiment, the present application provides a structure of an optical module and its corresponding optical device; fig. 5 is a schematic structural diagram of the optical module in the embodiment of the present application, in which the upper housing, the lower housing, and the unlocking component are removed. As shown in fig. 5, the first lens assembly 400 is connected to one end of the optical fiber array 900, and the other end of the optical fiber array 900 is connected to the optical fiber adapter 600, so that the optical connection with the external optical fiber is realized through the optical fiber adapter 600. The first lens assembly 400 is disposed on the circuit board 300. The first lens assembly 400 and the circuit board 300 form a package cavity, which will be described as a first receiving cavity for convenience of description. One end of the optical fiber adapter 600 is connected to the internal optical fiber, and the other end is connected to the external optical fiber, so that the internal optical fiber and the external optical fiber are butted through the optical fiber adapter 600.

FIG. 6 is a perspective view of a first lens assembly provided in embodiments of the present application; FIG. 7 is a schematic cross-sectional view of a first lens assembly according to an embodiment of the present disclosure; FIG. 8 is a schematic diagram illustrating an exploded structure of a first lens assembly according to an embodiment of the present application; as shown in fig. 6-8, first lens assembly 400 is typically a transparent plastic part, typically formed by injection molding. The first lens assembly 400 and the circuit board 300 form a first accommodating cavity 430, the first accommodating cavity 430 is used for arranging an optical device, and specifically, a light emitting chip array 440, a first collimating lens array 450 and a light multiplexing assembly 460 are sequentially arranged from the circuit board 300 to the inside of the first accommodating cavity 430. And, the top surface of the first lens assembly 400 is provided with a first reflective surface 410 and a second reflective surface 420. First reflective surface 410 is configured to reflect signal light incident thereon, and second reflective surface 420 is configured to reflect and concentrate the signal light reflected thereon into the fiber optic ribbon. The light emitting chip array 440 includes a plurality of light emitting chips for emitting a plurality of signal lights with different wavelengths, and the first collimating lens array 450 includes a plurality of collimating lenses for collimating the signal lights of the light emitting chip array. The first collimating lens array 450 is disposed over the light emitting chip array 440, the number of lenses of the first collimating lens array 450 depends on the number of light emitting chips in the light emitting chip array 440, and generally the number of lenses of the first collimating lens array 450 is equal to the number of light emitting chips in the light emitting chip array 440. The optical multiplexing assembly 460 is disposed on an inner wall of the first accommodating cavity 430, and is configured to combine a plurality of signal lights with different wavelengths into a single signal light, the optical multiplexing assembly 460 generally includes a plurality of optical filters, the optical filters allow transmission of signal lights with specific wavelengths and reflection of signal lights with other wavelengths by disposing different film layers on two sides and at different positions of the optical filters, one surface of the optical multiplexing assembly 460 allows reflection of signal lights with a certain wavelength, and the optical multiplexing assembly 460 coordinately selects the number of times of reflection of each light according to the number of combined light beams, so as to finally realize combination of signal lights with different wavelengths.

The first reflecting surface 410 is an inclined surface and is used for reflecting the signal light incident thereon, and the second reflecting surface is arranged in the direction close to the light-emitting direction and is used for reflecting and converging the signal light incident thereon to the optical fiber outside the optical module; when the first lens assembly 400 is assembled and fixed on the circuit board 300, the first reflecting surface 410 is disposed at a certain angle with the circuit board, i.e. inclined, the size of the inclination angle of the first reflecting surface 410 and the optical multiplexer assembly 460 is related to the thickness of the light emitting chips with different wavelengths and the optical multiplexer assembly 460, and optionally, the inclination angle of the first reflecting surface 410 and the optical multiplexer assembly 460 is selected to be between 4-17 °. Specifically, the projection of the light multiplexing component 460 in the circuit board direction covers the light emitting chips in the light emitting chip array 440, the projection of the first reflection surface 410 in the circuit board direction covers the light multiplexing component 460, and further, the signal light emitted by the light emitting chips in the light emitting chip array 440 is in a divergent state, which is a divergent light beam. In order to facilitate subsequent optical path design and optical coupling into the optical fiber, convergence processing of divergent light beams is required. In the present application, divergent light beams are converged into parallel light beams by the collimating lenses, and the parallel light beams are sequentially transmitted to the optical multiplexing assembly 460 and the first reflecting surface 410 after being converged by the collimating lenses in the first collimating lens array 450, light emitted by each collimating lens is incident to different positions of the optical multiplexing assembly 460, the first reflecting surface 410 changes the propagation direction of the light after receiving signal light from the optical multiplexing assembly 460 and reflects the light to the surface of the optical multiplexing assembly 460, the signal light with the wavelength and the signal light at other positions of the optical multiplexing component 460 are combined and incident to the first reflecting surface 410, finally the signal light with different wavelengths is combined into a beam of light and transmitted to the second reflecting surface 420, the second reflecting surface 420 changes the propagation direction of the light and finally emits the beam of light to the outside of the optical module, the signal light with different wavelengths can share one optical fiber to be transmitted out of the optical module, and the signal light with multiple wavelengths in the single optical fiber can be simultaneously transmitted.

The first reflective surface 410 is a total reflection surface, and the signal light emitted from the light emitting chip is transmitted to the first reflective surface 410 for total reflection.

The second reflecting surface 420 is an inclined surface, and after the combined signal light is transmitted to the second reflecting surface 420, the second reflecting surface 420 needs to simultaneously realize reflection and convergence, in order to simultaneously realize reflection and convergence, in this embodiment of the application, a plurality of protruding structures may be arranged on the surface of the second reflecting surface 420, the inclined surface of the second reflecting surface 420 has the function of reflecting the signal light, and the protruding structures may realize the function of converging the signal light; in addition, one end of the second reflecting surface can be connected with the first reflecting surface, and the other end of the second reflecting surface is connected with a converging lens, namely the first lens component comprises the converging lens, and the converging effect is realized by arranging the converging lens.

In this embodiment, the surface of the circuit board 300 has a carrying surface, and can carry a plurality of light emitting chips, the light emitting chips are arranged in an array form, the light emitting chips are disposed in the length direction and the width direction of the circuit board, wherein a row of light emitting chips in the length direction is set as a group, so that a plurality of groups of light emitting chips can be disposed, and with respect to the definition of the length direction and the width direction of the circuit board, reference is made to fig. 4, the direction in fig. 4 is defined as the length direction of the circuit board from left to right, and the direction is defined as the width direction of the circuit board from top to bottom.

As shown in fig. 9, the first collimating lens array 450 in the embodiment of the present application is a support structure, which can support a plurality of collimating lenses, and the support structure has strong stability and good collimating effect; wherein the support formula structure specifically can include the mainboard and locate two curb plates of mainboard both sides, constitute support formula structure after mainboard and the equipment of both sides board, two curb plates and circuit board contact, the surface of mainboard sets up a plurality of collimating lens, a plurality of collimating lens's the range is unanimous with the range mode of transmitting light chip, namely each collimating lens arranges with the form of array, all be equipped with collimating lens on circuit board length direction and the width direction, wherein the last one line collimating lens of length direction establishes to a set of, can realize setting up multiunit collimating lens like this, reference figure 4 is referred to in circuit board length direction and width direction's injeciton about circuit board length direction, the direction is defined as circuit board length direction from a left side to the right side in figure 4, from last to defining circuit board width direction down. The multiple groups of collimating lenses receive the signal light from the light emitting chip, converge the signal light and converge the signal light in a divergent state into parallel light beams.

As shown in fig. 8, a package cavity is disposed at an end of the first lens assembly 400 close to the light outlet, and an optical fiber socket 401 is disposed in the package cavity, and includes: a first connection portion 401a for plugging with the fiber cladding; a second connection portion 401b for being inserted into the optical fiber protection layer; third connection portion 401c has a receiving cavity, and each optical fiber ribbon can be received and wrapped by a wire-concentration component, and then the wire-concentration component is inserted into the receiving cavity of third connection portion 401c, wherein the wire-concentration component can be a sleeve wrapping the optical fiber ribbon, and each optical fiber ribbon is inserted into the sleeve, and then the sleeve is inserted into the receiving cavity of third connection portion 401 c. As can be seen from the figure, the inner diameters of the first connection portion 401a, the second connection portion 401b and the third connection portion 401c are all different, a transition connection portion is arranged at an interface of the first connection portion 401a and the second connection portion 401b, a filtering connection portion is also arranged at an interface of the second connection portion 401b and the third connection portion 401c, the shape of the optical fiber socket 401 is consistent with the structure of the optical fiber, the optical fiber sequentially includes a core layer, a cladding layer and a protective layer from inside to outside, the cladding layer of the optical fiber is arranged at the first connection portion 401a, the protective layer of the optical fiber is arranged at the second connection portion 401b, the number of the optical fibers is large, and the optical fibers are soft, so that the third connection portion 401c is required to collect and fix the optical fibers.

Optical fiber socket 401 and first lens subassembly 400 integrated into one piece in this application embodiment can guarantee like this that outside optic fibre is fixed with first lens subassembly 400 relative position, and positional deviation can not appear between outside optic fibre and the first lens subassembly 400, helps improving the coupling precision of signal light to optic fibre after closing, and then optical coupling efficiency increases when signal light couples to outside optic fibre from first lens subassembly 400. Finally, signal lights with different wavelengths can share one optical fiber to be transmitted out of the optical module, and the signal lights with multiple wavelengths in the single optical fiber can be transmitted simultaneously.

As shown in fig. 9, the optical multiplexing component 460 includes an input port for the light beams with different wavelengths to enter the optical multiplexing component 460, but only an output port for the composite light beam to exit. Suppose that 4 signal lights with wavelengths λ 1, λ 2, λ 3, and λ 4 need to be combined into one signal light, the 4 signal lights need to be combined are incident to the optical multiplexing assembly 460 through different light inlets of the optical multiplexing assembly 460, the λ 1 signal light undergoes six different reflections through the optical multiplexing assembly 206 and the first reflection surface 410 to reach the light outlet, the λ 2 signal light undergoes four different reflections through the optical multiplexing assembly 206 and the first reflection surface 410 to reach the light outlet, the λ 3 signal light undergoes two different reflections through the optical multiplexing assembly 206 and the first reflection surface 410 to reach the light outlet, the λ 4 signal light is incident to the optical multiplexing assembly 206 and then directly transmitted to the light outlet, and then the signal lights with different wavelengths enter the optical multiplexing assembly 460 through different light inlets and are output from the optical multiplexing assembly 460 through the same light outlet. Therefore, 4 beams of signal light with different wavelengths are combined into one beam at the light outlet, and then the combined beam of signal light is transmitted to the optical fiber through the light outlet, and the 4 beams of signal light with different wavelengths can share one optical fiber to transmit the light out of the optical module, so that the signal light with a plurality of wavelengths in a single optical fiber can be transmitted simultaneously.

In a second implementation, the present application also provides another structure of the optical module and its corresponding first lens assembly, etc. Fig. 11 is an exploded schematic structural diagram of a second optical module provided in an embodiment of the present application; fig. 12 is a schematic structural diagram of a second optical module provided in the embodiment of the present application, after an upper housing, a lower housing, and an unlocking component are removed; FIG. 13 is a perspective view of a second first lens assembly provided by an embodiment of the present application; FIG. 14 is a schematic cross-sectional view of a second first lens assembly according to an embodiment of the present disclosure; FIG. 15 is an exploded view of a second first lens assembly according to an embodiment of the present disclosure; specifically, as shown in fig. 10, the structure of the first lens assembly 400 in the present embodiment is different from that in the first embodiment, fig. 12 clearly shows the structure of the first lens assembly 400 in the present embodiment, and the structure of the first lens assembly 400 in the present embodiment is different from that in the foregoing embodiments in that: the first lens assembly 400 in this embodiment has two inward bearing surfaces at two ends, which are defined as a first bearing surface 470a and a second bearing surface 470b for convenience of description, the first collimating lens array 450 in this embodiment is a flat plate structure, fig. 16 clearly shows that the first collimating lens array 450 is a flat plate structure on which a plurality of collimating lenses are disposed for collimating signal light emitted from the light emitting chip, one end of the first collimating lens array 450 of the flat plate structure is disposed on the first bearing surface 470a, the other end is disposed on the second bearing surface 470b, the first collimating lens array 450 of the structure is preferably connected with the first lens assembly 400 during packaging, and then cooperatively covers the upper end of the light emitting chip array 440, in this embodiment, the first collimating lens array 450, the first bearing surface 470a and the second bearing surface 470b cooperate with each other to ensure that the relative positions of the first collimating lens array 450 and the first lens assembly 400 are fixed, the signal light emitted by the light emitting chips in the light emitting chip array 440 is fixed to the emitting direction of the first collimating lens array 450, thereby ensuring the collimating effect of the first collimating lens array 450 on the signal light emitted by the light emitting chips in the light emitting chip array 440. In this embodiment, the flat plate structure of the first collimating lens array 450 may be a transverse i-shape, two ends of the flat plate structure are transversely disposed on the corresponding bearing surfaces, a plurality of collimating lenses are disposed on the surface of the main body plate in the middle of the i-shaped flat plate, and the plurality of collimating lenses are disposed on the surface of the main body plate in an array form.

It should be noted that the structures and functions of the other devices in the second embodiment and the first embodiment, such as the first reflecting surface 410, the second reflecting surface 420, the first accommodating cavity 430, the light emitting chip array 440, the optical multiplexing assembly 460 and the optical fiber socket 401, are the same as those in the first embodiment, and are not repeated herein.

In a third embodiment, this embodiment provides an optical module of another structure and its respective optical devices. Fig. 16 is an exploded schematic structural diagram of a third optical module provided in the embodiment of the present application; FIG. 17 is a schematic cross-sectional view illustrating a third lens assembly according to an embodiment of the present application; FIG. 18 is a perspective view of a third first lens assembly provided in accordance with an embodiment of the present application; FIG. 19 is a first exploded view of a third first lens assembly provided in accordance with an embodiment of the present application; FIG. 20 is a second exploded view of a third first lens assembly provided in accordance with an embodiment of the present application; in the first and second embodiments, the optical fiber sockets and the first lens assembly are integrally arranged to transmit the combined signal light to the external optical fiber, but the transmission of the combined signal light to the external optical fiber may also be implemented in other manners. In the present embodiment, the transmission of the synthesized signal light into the external optical fiber is realized by providing a fiber holder. The specific implementation mode is as follows:

as shown in fig. 16, in this embodiment, the optical module includes a first lens assembly 400, an optical fiber array 900, an optical fiber adapter 600, an optical fiber holder 800, and as shown in fig. 18, further includes a converging lens assembly 700, where the first lens assembly includes a first reflecting surface 410, a second reflecting surface 420, a light emitting chip array 440, a first collimating lens array 450, and a light multiplexing assembly 460, where surfaces of the first reflecting surface 410 and the second reflecting surface 420 are straight surfaces, and functions of the respective devices are the same as those in the foregoing embodiments, and are not described herein again. The converging lens assembly 700 is arranged at one end of the second reflecting surface 420 close to the light outlet, the signal light synthesized by the light multiplexing assembly 460 is transmitted to the second reflecting surface 420 and then is coupled to the converging lens assembly 700 after being reflected by the second reflecting surface 420, and the signal light is converged to the optical fiber support 800 through the converging lens assembly 700, wherein a plurality of optical fiber ribbons are arranged in the optical fiber support 800 in a penetrating manner, and the optical fiber ribbons are connected with the optical fiber adapter 600, so that the light signal is transmitted.

It should be noted that the converging lens assembly 700 in the embodiment of the present application may also be disposed at the front end of the optical fiber holder 800, and the converging lens assembly 700 and the optical fiber holder 800 may be configured as an integrated structure, and a converging light spot is obtained after converging by the converging lens assembly 700 and then coupled into the optical fiber holder 800.

As shown in fig. 18-20, one end of the first lens assembly 400 has a carrying table, the optical fiber holder 800 is disposed on the surface of the carrying table, two limiting parts 900a are disposed at the front end of the first lens assembly 400, two abutting parts 900b are disposed at the side of the optical fiber holder 800, and the abutting parts 900b are inserted into the corresponding limiting parts 900a, thereby realizing the connection between the first lens assembly 400 and the optical fiber holder 800; specifically, the limiting component 900a may be set as a limiting column, the docking component 900b is set as a limiting hole, the limiting column is inserted into the corresponding limiting hole to realize docking of the first lens component 400 and the optical fiber support 800, as shown in fig. 20, a boss is disposed at one end of the first lens component 400 close to the limiting component 900a, the bottom end of the optical fiber support 800 is recessed inwards to form a recessed table, the lower surface of the recessed table is seated on the boss, the two side surfaces of the boss are disposed at two ends of the optical fiber support 800, an installation groove for installing an optical fiber ribbon is disposed on an upper table surface of the recessed table, the installation groove can fix and limit the optical fiber ribbon, the converging lens component 700 is provided with a first light through port, the optical fiber support 800 is provided with a second light through port, and the optical fiber ribbon passes through the optical fiber support along the first light through port and the second light through port and is disposed in the installation groove.

FIG. 9 is a diagram illustrating a state of use of a first lens assembly according to an embodiment of the present application; fig. 10 is a schematic diagram illustrating an operation of an optical multiplexing module according to an embodiment of the present disclosure; the light emitting chips in the light emitting chip array 440 are arranged in a row along the width direction of the circuit board 300 (the width direction of the first lens assembly 400). As shown in fig. 10, the first collimating lens array 450 disposed in the first receiving cavity 430 of the first lens assembly 400 includes four lenses, the four lenses are arranged in a row along the width direction of the first lens assembly 400, the lenses in the first collimating lens array 450 can be used for collimating four signal lights, the four signal lights collimated by the lenses in the first collimating lens array 450 are folded back between the optical multiplexing assembly 460 and the first reflecting surface 410, and finally, one signal light is output, and the one signal light includes signal lights with different wavelengths.

In the embodiment of the present application, the light multiplexing assembly 460 utilizes two sides and different positions of the film layers to transmit and reflect signal lights with different wavelengths to combine a plurality of signal lights with different wavelengths into a beam of light. The light multiplexing component 206 coordinates the selection of the number of reflections of each beam of light based on the number of beams of combined light.

Specifically, the signal light emitted by the light emitting chips in the light emitting chip array 440 is transmitted upward and transmitted to the lenses in the first collimating lens array 450, and the signal light emitted by the light emitting chips is collimated into parallel light by the lenses as divergent light; the signal light collimated by the first collimating lens array 450 is transmitted to the optical multiplexing assembly 460, the light beam with one wavelength is transmitted to the first reflecting surface 410 through the optical multiplexing assembly 460, and is transmitted to the optical multiplexing assembly 460 through the total reflection of the first reflecting surface 410, at this time, the light beam with the other wavelength is transmitted to the first reflecting surface 410 through the combined wave of the optical multiplexing assembly 460, so that the combined wave of a plurality of signal lights with different wavelengths is completed, and finally, a signal light beam is generated, and is reflected to the optical fiber ribbon through the second reflecting surface 420, and the signal lights with a plurality of wavelengths in the single optical fiber are simultaneously transmitted. In the optical module provided by the application, the combination of a plurality of beams of signal light with different wavelengths is completed only through the first lens assembly and the optical multiplexing assembly arranged in the first accommodating cavity of the first lens assembly, so that the coupling precision when a plurality of channels are coupled in the optical module is improved.

The light receiving structure is explained below.

In the embodiments of the present application, the structure of the second lens assembly 500 is similar or identical to the structure of the first lens assembly 400. For convenience of description, a lens component in light emission is defined as a first lens component, a lens component in light reception is defined as a second lens component, and fig. 21 is an exploded structural view of a second lens component provided in an embodiment of the present application; fig. 22 is an exploded structural view of another second lens assembly provided in the embodiments of the present application. As shown in fig. 22 or 23, the second lens assembly 500 and the circuit board 300 form a second receiving cavity 530, and the second receiving cavity 530 is used for accommodating optical devices, and specifically, a light receiving chip array 540, a second collimating lens array 550 and a light demultiplexing assembly 560 are sequentially arranged from the circuit board 300 to the inside of the second receiving cavity 530. And, the top surface of the second lens assembly 500 is provided with a third reflecting surface 520 and a fourth reflecting surface 510. The light receiving chip array 540 includes a plurality of light receiving chips for receiving a plurality of signal lights with different wavelengths, wherein the light receiving chips are arranged in an array form, the light receiving chips are disposed in both the length direction and the width direction of the circuit board, and a row of light receiving chips in the length direction is set as a group, so that a plurality of groups of light receiving chips can be disposed, and with reference to fig. 4 regarding the definition of the length direction and the width direction of the circuit board, the direction in fig. 4 is defined as the length direction of the circuit board from left to right, and is defined as the width direction of the circuit board from top to bottom.

The second collimating lens array 550 includes several collimating lenses for collimating the signal light output from the light demultiplexing assembly 560. The second collimating lens array 550 is disposed over the light receiving chip array 540, the number of lenses of the second collimating lens array 550 depends on the number of light receiving chips in the light receiving chip array 540, and generally the number of lenses of the second collimating lens array 550 is equal to the number of light receiving chips in the light receiving chip array 540. The optical demultiplexing assembly 560 is disposed on an inner wall of the second receiving cavity 530 for demultiplexing a signal light into a plurality of signal lights with different wavelengths, and the optical demultiplexing assembly 560 includes a plurality of optical filters. In the embodiment of the present application, the optical demultiplexing assembly 560 uses different film layers disposed on two sides and at different positions thereof to transmit and reflect signal light with different wavelengths to split a signal light beam including different wavelengths into a plurality of light beams. The optical demultiplexing module 560 cooperatively selects the number of reflections of the signal light for each wavelength according to the wavelength type of the split light and the number of split light.

Specifically, one beam of signal light with different wavelengths outside the optical module is transmitted to the second lens assembly 500, the beam of signal light is reflected by the third reflective surface 520 and then transmitted to the optical demultiplexing assembly 560, a light beam with one wavelength passes through the optical demultiplexing assembly 560, a light beam with the remaining wavelength is reflected to the fourth reflective surface 510, and then reflected to the optical demultiplexing assembly 560 by the fourth reflective surface 510, a light beam with the other wavelength passes through the optical demultiplexing assembly 560, and a light beam with the remaining wavelength is reflected to the fourth reflective surface 510, so that one beam of signal light with different wavelengths is demultiplexed into signal lights with different wavelengths, and the signal lights are collimated by the second collimating lens array 550 and then transmitted to the light receiving chips in the light receiving chip array in sequence, thereby realizing the function that the optical module receives signal lights with multiple wavelengths in the optical fiber. In the optical module provided by the application, only through the second lens assembly and the optical demultiplexing assembly arranged in the second accommodating cavity, one beam of beam splitting including signal light with different wavelengths is completed, and the coupling precision in the optical module during multi-channel coupling is improved.

FIG. 23 is an exploded view of a second lens assembly according to an embodiment of the present application; fig. 24 is a schematic diagram of an optical demultiplexing module according to an embodiment of the present disclosure. As shown in fig. 23 to 24, the optical demultiplexing module 560 includes an input port for inputting signal light with multiple wavelengths, and includes a plurality of output ports for outputting signal light with one wavelength. Suppose that a beam of signal light with four wavelengths, including λ 1, λ 2, λ 3 and λ 4, enters the optical demultiplexing assembly 560 through an incident light port of the optical demultiplexing assembly 560, where λ 1 signal light undergoes six different reflections through the optical demultiplexing assembly 560 and the fourth reflective surface 510 and reaches its light exit port, λ 2 signal light undergoes four different reflections through the optical demultiplexing assembly 560 and the fourth reflective surface 510 and reaches its light exit port, λ 3 signal light undergoes two different reflections through the optical demultiplexing assembly 560 and the fourth reflective surface 510 and reaches its light exit port, and λ 4 signal light enters the optical demultiplexing assembly 560 and directly transmits to its light exit port, so that signal light with different wavelengths enters the optical demultiplexing assembly 560 through the same light entrance port and is output through different light exit ports.

In embodiments of the present application where nothing is done with respect to the second lens assembly 500, reference may be made to the first lens assembly 400.

It should be noted that, the two lens assembly structures, the two collimating lens array structures, the optical fiber sockets, and the optical fiber holders provided in the present application may be combined arbitrarily between the two ways of connecting the optical signal to the external optical fiber, and are not limited to the three embodiments provided in the present application, and other combined structures are all within the scope of the present application.

In the optical module provided by the application, a first lens component and a circuit board form a containing cavity, the containing cavity is sequentially provided with a light emitting chip array, a collimating lens array and a light multiplexing component from bottom to top, the surface of the first lens component is provided with a first reflecting surface and a second reflecting surface, the first reflecting surface and the second reflecting surface can be mutually connected, the light emitting chip array comprises a plurality of light emitting chips, the light emitting chip array can emit a plurality of beams of signal light with different wavelengths, the signal light is in a scattering state at the moment and forms parallel light after being collimated and focused by the collimating lens array, the parallel light with the different wavelengths is transmitted to the light multiplexing component, the light beam with one wavelength is transmitted to the first reflecting surface through the light multiplexing component and is transmitted to the light multiplexing component through the total reflection of the first reflecting surface, the light beam with the other wavelength is transmitted to the first reflecting surface after passing through the combined wave of the light multiplexing component at the moment, the light beams with the other wavelength are transmitted to the first reflecting surface after being subjected to wave combination of the light multiplexing component, so that wave combination of a plurality of signal lights with different wavelengths is completed, a beam of signal light is finally generated, the signal light is reflected by the second reflecting surface and then transmitted into the optical fiber ribbon, and the signal lights with the multiple wavelengths in the single optical fiber are transmitted simultaneously. In the optical module provided by the application, the combination of a plurality of beams of signal light with different wavelengths is completed only through the first lens assembly and the optical multiplexing assembly arranged in the first accommodating cavity of the first lens assembly, so that the coupling precision when a plurality of channels are coupled in the optical module is improved.

In the optical module provided by the application, the second lens assembly and the circuit board form a second accommodating cavity, the light receiving chip array, the collimating lens array and the optical demultiplexing assembly are sequentially arranged in the cavity from bottom to top, the top surface of the second lens assembly is provided with a third reflecting surface and a fourth reflecting surface, and the third reflecting surface and the fourth reflecting surface can be connected with each other; one beam of signal light with different wavelengths outside the optical module is transmitted to the second lens assembly, the beam of signal light is reflected to the optical demultiplexing assembly through the third reflecting surface, one beam of light with one wavelength penetrates through the optical demultiplexing assembly, the remaining beam of light with the other wavelength is reflected to the fourth reflecting surface, the remaining beam of light with the other wavelength penetrates through the optical demultiplexing assembly, and the remaining beam of light with the other wavelength is reflected to the fourth reflecting surface, so that the signal light with one beam of signal light with different wavelengths is demultiplexed into a plurality of beams of signal light with different wavelengths, and the signal light with the different wavelengths is sequentially transmitted to the light receiving chip in the light receiving chip array after passing through the collimating lens array, and the function of the optical module for receiving the signal light with multiple wavelengths in the single optical fiber is realized. In the optical module provided by the application, only through the second lens assembly and the optical demultiplexing assembly arranged in the second accommodating cavity, one beam of beam splitting including signal light with different wavelengths is completed, and the coupling precision in the optical module during multi-channel coupling is improved.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments, and the relevant points may be referred to the part of the description of the method embodiment. It is noted that other embodiments of the present application will become readily apparent to those skilled in the art from consideration of the specification and practice of the invention herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A light module, comprising:

a circuit board;

2. The optical module of claim 1, wherein the first array of converging lenses is disposed between the second reflective surface and the fiber support.

3. The optical module of claim 1, wherein the first fiber mount has the first array of converging lenses.

4. The optical module of claim 1, wherein an end of the first lens assembly near the light outlet is provided with a first optical fiber socket, and the first optical fiber socket comprises:

the first connecting part is used for being spliced with the optical fiber cladding;

the second connecting part is used for being spliced with the optical fiber protective layer;

and the third connecting part is used for accommodating the line concentration part wrapping the optical fiber ribbon.

5. The optical module according to claim 1, wherein the first reflective surface is an inclined surface, and the second reflective surface is an inclined surface.

6. A light module, comprising:

a circuit board;

the second lens component covers the light emitting chip array, the surface of the second lens component is provided with a third reflecting surface and a fourth reflecting surface, and the side surface of one end of the second lens component is provided with a limiting component;

7. The optical module of claim 6, wherein the second array of converging lenses is disposed between the third reflective surface and the fiber support.

8. The optical module of claim 6, wherein the second fiber holder has the second array of converging lenses.

9. The optical module of claim 6, wherein an end of the second lens assembly near the light outlet is provided with a second optical fiber socket, and the second optical fiber socket comprises:

the fourth connecting part is used for being spliced with the optical fiber cladding;

the fifth connecting part is used for being spliced with the optical fiber protective layer;

and the sixth connecting part is used for accommodating the line concentration part wrapping the optical fiber ribbon.

10. The optical module according to claim 6, wherein the third reflective surface is an inclined surface, and the fourth reflective surface is an inclined surface.