CN219609293U - Optical module coupling jig - Google Patents

Abstract

The utility model discloses an optical module, comprising: a light source, a first lens, a second lens, and an optical fiber. Wherein the light source is configured to emit a light beam, which is a scattered light beam. The first lens converts the scattered light beam into a collimated light beam; the second lens is positioned in the light emergent direction of the first lens, and the second lens is configured to converge the collimated light beam into a converging light beam. The optical fiber is positioned in the light emitting direction of the second lens, the first end face of the optical fiber is close to the second lens, and the second end face of the optical fiber is an inclined end face. The optical fiber receives the converging light beam emitted by the second lens and transmits the light beam from the first end face to the second end face. The end face of the second end of the optical fiber is an inclined end face, and the transmission direction of the emergent light beam is refracted at the interface between the second end face and air. The refractive index of the optical fiber is greater than that of air, so that light is refracted by the optical fiber when entering air from the second end surface of the optical fiber, and the angle between the light and the normal line of the interface becomes large.

Description

Optical module coupling jig

Technical Field

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

Background

As the requirements for communication bandwidth in the field of optical fiber communication are increasing, global optical communication is in a rapid development period. In the field of high-speed data communication, in order to ensure that data can be transmitted at a long distance and a high speed, optical modules are generally used in the art to realize the transmission and the reception of light with different wavelengths.

The core device of the optical module is composed of an optical transmitting component and an optical receiving component, which are respectively used for realizing the transmission of optical signals and the reception of the optical signals. The improvement of the precision of the fixed position of the optical device in the optical module is beneficial to the improvement of the coupling precision of the optical module.

Disclosure of Invention

The utility model provides an optical module coupling jig which improves the coupling efficiency of an optical module.

In order to solve the technical problems, the embodiment of the utility model discloses the following technical scheme:

the utility model provides an optical module coupling jig, which comprises: a light source configured to emit a light beam, the light beam being a scattered light beam;

the first lens is positioned in the light emitting direction of the light source; the first lens is configured to convert the scattered light beam into a collimated light beam;

a second lens located in the light-emitting direction of the first lens, the second lens configured to converge the collimated light beam into a converging light beam;

the optical fiber is positioned in the light emitting direction of the second lens, the first end face of the optical fiber is adjacent to the second lens, and the second end face of the optical fiber is an inclined end face.

The utility model has the beneficial effects that:

the present disclosure provides an optical module coupling jig, including: a light source, a first lens, a second lens, and an optical fiber. Wherein the light source is configured to emit a light beam, which is a scattered light beam. The first lens converts the scattered light beam into a collimated light beam; the second lens is positioned in the light emergent direction of the first lens, and the second lens is configured to converge the collimated light beam into a converging light beam. The optical fiber is positioned in the light emitting direction of the second lens, the first end face of the optical fiber is close to the second lens, and the second end face of the optical fiber is an inclined end face. The optical fiber receives the converging light beam emitted by the second lens and transmits the light beam from the first end face to the second end face. The end face of the second end of the optical fiber is an inclined end face, and the transmission direction of the emergent light beam is refracted at the interface between the second end face and air. The refractive index of the optical fiber is larger than that of air, so that light is emitted and refracted when entering the air from the second end face of the optical fiber, the included angle between the light and the normal line of the interface becomes large, the light is transmitted to the fixing adhesive which forms a specific included angle with the optical axis of the light source, and the fixing adhesive is solidified.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings that need to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings may be obtained according to these drawings to those of ordinary skill in the art. Furthermore, the drawings in the following description may be regarded as schematic diagrams, not limiting the actual size of the products, the actual flow of the methods, the actual timing of the signals, etc. according to the embodiments of the present disclosure.

Fig. 1 is a connection diagram of an optical communication system according to some embodiments of the present disclosure;

fig. 2 is a block diagram of an optical network terminal according to some embodiments of the present disclosure;

FIG. 3 is a block diagram of an optical module provided in accordance with some embodiments of the present disclosure;

FIG. 4 is an exploded view of an optical module provided in accordance with some embodiments of the present disclosure;

fig. 5 is a schematic diagram of a connection structure between an optical transceiver and a circuit board according to some embodiments of the present disclosure;

fig. 6 is a schematic diagram of an exploded structure of an optical transceiver and a circuit board according to some embodiments of the present disclosure;

fig. 7 is a block diagram of a light emitting component provided in accordance with some embodiments of the present disclosure;

FIG. 8 is a schematic diagram of a fiber optic adapter provided in accordance with some embodiments of the present disclosure;

FIG. 9 is a schematic cross-sectional view of a fiber optic adapter provided according to some embodiments of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a fiber optic adapter and a light receiving member provided in accordance with some embodiments of the present disclosure;

fig. 11 is a block diagram of an optical module coupling jig according to some embodiments of the present disclosure;

fig. 12 is a cross-sectional structure diagram of an optical module coupling jig according to some embodiments of the present disclosure;

fig. 13 is a cross-sectional view of an optical module coupling jig and a light receiving component according to some embodiments of the present disclosure;

fig. 14 is a light path diagram of an optical module coupling jig according to some embodiments of the present disclosure;

fig. 15 is a partial light path diagram of an optical module coupling jig according to some embodiments of the present disclosure.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by one of ordinary skill in the art based on the embodiments provided by the present disclosure are within the scope of the present disclosure.

In an optical communication system, an optical signal is used to carry information to be transmitted, and the optical signal carrying the information is transmitted to an information processing device such as a computer through an information transmission device such as an optical fiber or an optical waveguide, so as to complete the transmission of the information. Since light has a passive transmission characteristic when transmitted through an optical fiber or an optical waveguide, low-cost, low-loss information transmission can be realized. Further, since a signal transmitted by an information transmission device such as an optical fiber or an optical waveguide is an optical signal and a signal that can be recognized and processed by an information processing device such as a computer is an electrical signal, it is necessary to perform mutual conversion between the electrical signal and the optical signal in order to establish an 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.

The optical module realizes the function of interconversion between the optical signal and the electric signal in the technical field of optical communication. The optical module comprises an optical port and an electric port, the optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides through the optical port, realizes electric connection with an optical network terminal (for example, optical cat) through the electric port, and the electric connection is mainly used for power supply, I2C signal transmission, data information transmission, grounding and the like; the optical network terminal transmits the electric signal to information processing equipment such as a computer through a network cable or wireless fidelity (Wi-Fi).

Fig. 1 is a connection diagram of an optical communication system according to some embodiments of the present disclosure. As shown in fig. 1, the optical communication system includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103.

One end of the optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 through the optical module 200. The optical fiber itself can support long-range signal transmission, such as several kilometers (6 kilometers to 8 kilometers), on the basis of which, if a repeater is used, it is theoretically possible to achieve unlimited distance transmission. Thus, in a typical optical communication system, the distance between the remote server 1000 and the optical network terminal 100 may typically reach several kilometers, tens of kilometers, or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing apparatus 2000 may be any one or several of the following: routers, switches, computers, cell phones, tablet computers, televisions, etc.

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing apparatus 2000 and the optical network terminal 100. The connection between the local information processing apparatus 2000 and the remote server 1000 is completed by an optical fiber 101 and a network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical module 200 and the optical network terminal 100.

The optical module 200 includes an optical port configured to access the optical fiber 101 such that the optical module 200 establishes a bi-directional optical signal connection with the optical fiber 101; the electrical port is configured to be accessed into the optical network terminal 100 such that the optical module 200 establishes a bi-directional electrical signal connection with the optical network terminal 100. The optical module 200 performs mutual conversion between optical signals and electrical signals, so that an information connection is established between the optical fiber 101 and the optical network terminal 100. Illustratively, the optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 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 200 and input to the optical fiber 101. Since the optical module 200 is a tool for implementing the mutual conversion between the optical signal and the electrical signal, it has no function of processing data, and the information is not changed during the above-mentioned photoelectric conversion process.

The optical network terminal 100 includes a substantially rectangular parallelepiped housing (housing), and an optical module interface 102 and a network cable interface 104 provided on the housing. The optical module interface 102 is configured to access the optical module 200, so that the optical network terminal 100 and the optical module 200 establish a bidirectional electrical signal connection; the network cable interface 104 is configured to access the network cable 103 such that the optical network terminal 100 establishes a bi-directional electrical signal connection with the network cable 103. A connection is established between the optical module 200 and the network cable 103 through the optical network terminal 100. Illustratively, the optical network terminal 100 transmits an electrical signal from the optical module 200 to the network cable 103, and transmits an electrical signal from the network cable 103 to the optical module 200, so that the optical network terminal 100, as a host computer of the optical module 200, can monitor the operation of the optical module 200. The upper computer of the optical module 200 may include an optical line terminal (Optical Line Terminal, OLT) or the like in addition to the optical network terminal 100.

The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101, the optical module 200, the optical network terminal 100 and the network cable 103.

Fig. 2 is a block diagram of an optical network terminal according to some embodiments of the present disclosure, and fig. 2 only illustrates a structure of the optical network terminal 100 related to the optical module 200 in order to clearly show a connection relationship between the optical module 200 and the optical network terminal 100. As shown in fig. 2, the optical network terminal 100 further includes a circuit board 105 disposed in the housing, a cage 106 disposed on a surface of the circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access an electrical port of the optical module 200; the heat sink 107 has a convex portion such as a fin that increases the heat dissipation area.

The optical module 200 is inserted into the cage 106 of the optical network terminal 100, the optical module 200 is fixed by the cage 106, and heat generated by the optical module 200 is transferred to the cage 106 and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected with an electrical connector inside the cage 106, so that the optical module 200 and the optical network terminal 100 propose a bi-directional electrical signal connection. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, so that the optical module 200 establishes a bi-directional optical signal connection with the optical fiber 101.

Fig. 3 is a block diagram of an optical module provided according to some embodiments of the present disclosure. Fig. 4 is an exploded view of an optical module provided in accordance with some embodiments of the present disclosure. As shown in fig. 3 and 4, the optical module 200 includes a housing (shell), a circuit board 300 disposed in the housing, and an optical transceiver 400.

The housing includes an upper housing 201 and a lower housing 202, the upper housing 201 being covered on the lower housing 202 to form the above-mentioned housing having two openings; the outer contour of the housing generally presents a square shape.

In some embodiments of the present disclosure, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 disposed at both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011, and the cover 2011 is covered on two lower side plates 2022 of the lower housing 202 to form the housing.

In some embodiments, the lower housing 202 includes a bottom plate 2021 and two lower side plates 2022 disposed on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper housing 201 includes a cover 2011 and two upper side plates disposed on two sides of the cover 2011 and perpendicular to the cover 2011, and the two upper side plates are combined with two lower side plates 2022 to cover the upper housing 201 on the lower housing 202.

The direction in which the two openings 204 and 205 are connected may be the same as the longitudinal direction of the optical module 200 or may be different from the longitudinal direction of the optical module 200. For example, opening 204 is located at the end of light module 200 (right end of fig. 3) and opening 205 is also located at the end of light module 200 (left end of fig. 3). Alternatively, the opening 204 is located at the end of the light module 200, while the opening 205 is located at the side of the light module 200. The opening 204 is an electrical port, and the golden finger of the circuit board 300 extends out from the electrical port 204 and is inserted into an upper computer (for example, the optical network terminal 100); the opening 205 is an optical port configured to access the external optical fiber 101 such that the external optical fiber 101 is connected to the optical transceiver 400 inside the optical module 200.

The assembly mode of combining the upper shell 201 and the lower shell 202 is adopted, so that devices such as the circuit board 300, the optical transceiver component 400 and the like are conveniently installed in the shell, and the devices are packaged and protected by the upper shell 201 and the lower shell 202. In addition, when devices such as the circuit board 300 and the optical transceiver 400 are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component of the devices are conveniently deployed, and the automatic production implementation is facilitated.

In some embodiments, the upper housing 201 and the lower housing 202 are generally made of metal materials, which is beneficial to electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking member located outside of the housing thereof, the unlocking member being configured to enable or disable the fixed connection between the optical module 200 and the host computer.

Illustratively, the unlocking component is located on the outer walls of the two lower side plates 2022 of the lower housing 202, with a snap-in component that mates with an upper computer cage (e.g., cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the clamping component of the unlocking component; when the unlocking component is pulled, the clamping component of the unlocking component moves along with the unlocking component, so that the connection relation between the clamping component and the upper computer is changed, the clamping relation between the optical module 200 and the upper computer is relieved, and the optical module 200 can be pulled out of the cage of the upper computer.

The circuit board 300 includes circuit traces, electronic components and chips, which are connected together by the circuit traces according to a circuit design to realize functions such as power supply, electrical signal transmission, and grounding. The electronic components include, for example, capacitors, resistors, transistors, metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). The chips include, for example, a micro control unit (Microcontroller Unit, MCU), a laser driving chip, a limiting amplifier (limiting amplifier), a clock data recovery (Clock and Data Recovery, CDR) chip, a power management chip, a digital signal processing (Digital Signal Processing, DSP) chip.

The circuit board 300 is generally a hard circuit board, and the hard circuit board can also realize a bearing function due to the relatively hard material, for example, the hard circuit board can stably bear the electronic components and chips; when the optical transceiver is positioned on the circuit board, the hard circuit board can also provide stable bearing; the hard circuit board can also be inserted into an electrical connector in the upper computer cage.

The circuit board 300 further includes a gold finger formed on an end surface thereof, the gold finger being composed of a plurality of pins independent of each other. The circuit board 300 is inserted into the cage 106 and is conductively connected to the electrical connectors within the cage 106 by the gold fingers. The golden finger can be arranged on the surface of one side of the circuit board 300 (such as the upper surface shown in fig. 4) or on the surfaces of the upper side and the lower side of the circuit board 300, so as to adapt to the occasion with large pin number requirements. The golden finger is configured to establish electrical connection with the upper computer to achieve power supply, grounding, I2C signal transmission, data signal transmission and the like.

Of course, flexible circuit boards may also be used in some optical modules. The flexible circuit board is generally used in cooperation with the rigid circuit board to supplement the rigid circuit board. For example, a flexible circuit board may be used to connect the hard circuit board and the optical transceiver.

The optical transceiver includes an optical transmitting section configured to enable transmission of an optical signal, and an optical receiving section configured to enable reception of the optical signal. Illustratively, the light emitting component and the light receiving component are joined together to form an integral light receiving and transmitting component.

Fig. 5 is a schematic diagram of a connection structure between an optical transceiver and a circuit board according to some embodiments of the present disclosure, and fig. 6 is a schematic diagram of an exploded structure between an optical transceiver and a circuit board according to some embodiments of the present disclosure. In some embodiments of the present utility model, the light emitting part 420 and the light receiving part 410 are both encapsulated in a coaxial TO, the light emitting part 420 and the circuit board 300 are connected through a first flexible circuit board 520, and the light receiving part 410 and the circuit board 300 are connected through a second flexible circuit board 510.

In the embodiment of the present utility model, the optical transceiver component has a BOSA structure, and includes a tube housing 401, one end of which is provided with an optical fiber adapter 402 for connecting with an external optical fiber, the optical transmitter component 420 is disposed on the opposite side of the optical fiber adapter 402, and the optical receiver component 410 is disposed on the adjacent side of the optical transmitter component 420.

One corner of the circuit board 300 is provided with a notch, in order to install the avoidance portion, the light receiving and transmitting component is arranged at the installation avoidance portion, and pins of the light emitting component 420 and the light receiving component 410 are arranged towards the circuit board 300. The light receiving part 410 includes a light receiving socket 411 and a plurality of light receiving pins passing through the light receiving socket 411 and protruding outside the light receiving socket 411. One end of the first flexible circuit board 520 is soldered to the light emitting pins.

The light receiving pin includes: the first end of the first flexible circuit board is provided with a first TO connecting part which is connected with the bottom of the light receiving tube seat. The first TO connecting part is provided with a plurality of pin through holes, and the inner walls of the through holes are provided with metal plating layers which are connected with the light receiving pins.

Fig. 7 is a block diagram of a light receiving member provided according to some embodiments of the present disclosure. As shown in fig. 7, the light receiving member 410 in the embodiment of the present utility model includes a stem 411, a laser detector provided on the surface of the stem, a base, pins 412, and a stem cap 413. The base is disposed perpendicular to the stem 411, and the surface of the base is provided with a converging lens. The laser detector is arranged on the upper surface of the tube seat and is connected with the tube pins through wires. The cap 413 is provided with a collimator lens 4131 for collimating the received signal light. The socket 411 is provided with a plurality of through holes for fixing pins.

In some embodiments, the outside of the cap is sleeved with a fiber optic adapter in which an optical fiber is disposed to conduct signal light from the outside to a collimating lens above the cap. Fig. 8 is a schematic structural view of an optical fiber adapter provided according to some embodiments of the present disclosure, and fig. 9 is a schematic sectional structural view of an optical fiber adapter provided according to some embodiments of the present disclosure. Fig. 10 is a schematic cross-sectional structure of a fiber optic adapter and a light receiving member according to some embodiments of the present disclosure. As shown in fig. 8, 9 and 10, the outer portion of the optical fiber adapter 500 has an irregular cylindrical shape, and a through hole 501 is formed in the middle portion thereof.

The inside of the fiber optic adapter is hollow, comprising a first through hole section 511, a second through hole section 512 and a third through hole section 513 having different diameters. Wherein the diameter of the first through hole section 511 is larger than the diameter of the second through hole section 512, and the diameter of the third through hole section 513 is larger than the diameter of the second through hole section 512. And the diameter of the third through-hole section 513 is larger than the diameter of the first through-hole section 511.

In some embodiments, a cap is embedded in the third perforated section 513, with the outer wall of the cap being connected to the third perforated section 513. In order to facilitate positioning of the cap and the third through hole section 513, a limiting portion 5131 is provided on an inner wall of the third through hole section 513, and a diameter of the limiting portion is smaller than that of the cap, so that an end portion of the cap abuts against a side face of the limiting portion. The optical fiber adapter is internally provided with an optical fiber ferrule for transmitting light.

The third through-hole section 513 includes a first sub-through-hole section 5131, a second sub-through-hole section 5132, and a third sub-through-hole section 5133, the diameter of the second sub-through-hole section 5132 being smaller than the diameter of the cap, and the diameter of the third sub-through-hole section 5133 being larger than the diameter of the cap. The second sub through hole and the third sub through hole have different diameters, and a step is formed at the joint of the second sub through hole and the third sub through hole and is a limiting part.

In some embodiments, the optical transceiver component is coupled to the fiber optic adapter after the optical transceiver component is assembled. The optical transceiver includes: the collimating lens is fixed at the through hole at the top end of the tube cap by the connecting glue. The optical transceiver component is coupled with the optical fiber adapter and comprises a pipe cap of the optical transceiver component is abutted against the side face of the limiting part of the optical fiber adapter.

Typically, to cure the gel in alignment with the edge of the straight lens, a curing light source is illuminated by the pins toward the cap. Light of the curing light source enters the tube cap through gaps between the pins and the through holes of the tube base, and is diffusely reflected to the top of the tube cap for many times, so that insufficient illumination is emitted to the edge of the collimating lens, poor curing is caused, the position of the optical axis is deviated, and the optical power is affected.

In order to solve the above problems, the present utility model provides an optical module coupling jig for coupling connection of optical components of a coaxial package, comprising: a light source, a first lens, a second lens and an optical fiber. The light source is arranged at the end part of the light module coupling jig, and the light outlet of the light source is arranged towards the first lens.

Fig. 11 is a block diagram of an optical module coupling jig according to some embodiments of the present disclosure, and fig. 12 is a cross-sectional block diagram of an optical module coupling jig according to some embodiments of the present disclosure. As shown in connection with fig. 11 and 12, in some embodiments, the light source 610 is a point light source and the emitted light is ultraviolet light of wavelength. The first lens 620 is a collimating lens that converts light emitted from the light source into a collimated beam by scattering. The second lens 630 is a converging lens, and is located on the light outgoing path of the first lens 620, and is used for converging the collimated light beam into a light spot. The first end face of the optical fiber 640 is disposed on the light-emitting path of the second lens, and the second end face is disposed at an inclination angle of 30 ° -42 °.

The light is transmitted to the outside through the second end face of the optical fiber, and when the light is emitted from the inclined end face, a certain included angle exists between the light and the central axis of the optical fiber, so that the light is in a certain included angle between the transmission direction of the second end face of the optical fiber and the central axis of the optical fiber, the optical fiber deviates from the central axis and falls into the edge position of the collimating lens 4131, and the curing glue at the edge of the collimating lens 4131 is used for curing.

In order to improve the optical power and the curing effect of the curing adhesive, the distance between the first end face of the optical fiber and the second lens is equal to the focal length of the second lens, that is, the first end face of the optical fiber is located at the light spot of the second lens.

One end of the optical fiber extends into the optical fiber adapter, and in order to ensure that the light extending out of the inclined end surface of the optical fiber falls into the edge position of the collimating lens 4131, one end of the optical fiber enters the optical fiber adapter along the first through hole section, the second through hole section and the third through hole section. The scattered light beam emitted by the light source is collimated into a collimated light beam by the first lens, and then is converted into a converging light beam by the second lens. The converging light beam is transmitted through the first end of the optical fiber to the second end, and is transmitted through the second end surface of the optical fiber to the outside. The end face of the second end of the optical fiber is an inclined end face, and the transmission direction of the emergent light beam is refracted at the interface between the second end face and air. The refractive index of the optical fiber is greater than that of air, so that light is refracted by the optical fiber when entering air from the second end surface of the optical fiber, and the angle between the light and the normal line of the interface becomes large.

In order to realize the fixation of the light source, the first lens, the second lens and the optical fiber, the optical module coupling jig further comprises a lens barrel. The lens cone is of a closed structure, so that overflow of internal light is avoided. The lens barrel is configured to fix a light source, a first lens, a second lens, and an optical fiber. As shown in the drawing, the lens barrel is a hollow housing structure, including: a light source fixing member 651, a lens fixing member 652, and an optical fiber fixing member 653.

Wherein, the light source fixing part 651 is cone-shaped, and its interior is hollow for light transmission. The top of the cone is fixed with a light source and the bottom of the cone is connected with one end of the lens fixing member 652. The light source fixing member 651 may have a cylindrical or rectangular parallelepiped structure, and may have a hollow interior, so as to prevent light emitted from the light source from being blocked.

The lens fixing member 652 is in the form of a cylinder, and is hollow in the inside thereof for transmitting light. One end of the lens fixing member 652 is connected to the light source fixing member, and the other end of the lens fixing member is connected to the optical fiber fixing member. The first lens and the second lens are arranged in the lens fixing part, the first lens is positioned between the second lens and the light source, the first lens is a collimating lens, and light emitted by the light source is converted into collimated light beams by scattering. The second lens is a converging lens, and is positioned on the light emergent path of the first lens and used for converging the collimated light beam into a light spot.

The optical fiber fixing member 653 has a cone shape, and is hollow inside for light transmission. One end of the optical fiber fixing component is fixed with an optical fiber, and the other end of the optical fiber fixing component is connected with one end of the lens fixing component. The optical fiber fixing component can also be of a cylindrical or cuboid structure, and the inside of the optical fiber fixing component is hollow, so that light emitted by a light source is prevented from being blocked.

One side end face of the optical fiber, which is close to the light source, is of a plane structure perpendicular to the optical axis, the other end is of an inclined end face,

fig. 13 is a cross-sectional view of an optical module coupling jig and an optical receiving component according to some embodiments of the present disclosure, and fig. 14 is an optical path diagram of an optical module coupling jig according to some embodiments of the present disclosure. Fig. 15 is a partial light path diagram of an optical module coupling jig according to some embodiments of the present disclosure. As shown in fig. 13 and 14 and 15, the scattered light beam emitted from the light source 610 is collimated into a collimated light beam by the first lens 620, and then converted into a converging light beam by the second lens 630. The converging light beam is transmitted through the first end of the optical fiber 640 to the second end, and is transmitted through the second end face of the optical fiber 640 to the outside. The end surface of the second end of the optical fiber 640 is an inclined end surface, and the transmission direction of the outgoing light beam is larger than the refractive index of air by refracting the optical fiber 640 at the interface between the second end surface and air, so that the light is emitted and refracted when entering the air from the second end surface of the optical fiber 640, and the included angle between the light and the normal line of the interface becomes larger.

One end of the optical fiber 640 extends into the optical fiber 640 adaptor, and in order to ensure that the light extending from the inclined end surface of the optical fiber 640 falls into the edge position of the collimating lens 4131, one end of the optical fiber 640 enters the optical fiber 640 adaptor along the first through hole section, the second through hole section and the third through hole section. The scattered light beam from the light source 610 is collimated into a collimated beam by the first lens 620 and then converted into a converging beam by the second lens 630. The converging light beam is transmitted through the first end of the optical fiber 640 to the second end, and is transmitted through the second end face of the optical fiber 640 to the outside. The second end of the optical fiber 640 has an inclined end surface, and the transmission direction of the outgoing light beam is refracted at the interface between the second end surface and air. The refractive index of the optical fiber 640 is greater than that of air, so that light is refracted by the second end surface of the optical fiber 640 when entering air, and the angle between the light and the interface normal becomes large. The light rays are thus deflected away from the original optical axis after entering the interior of the optical fiber 640 adaptor and eventually fall to the edge position of the collimator lens 4131 for curing the curing glue at the edge of the collimator lens 4131.

In some examples of the present disclosure, the second end face is disposed at an oblique angle of 30 ° -42 °. Wherein, the inclination angle is the included angle between the end face and the central axis of the optical fiber 640.

The present disclosure provides an optical module coupling jig, including: a light source, a first lens, a second lens, and an optical fiber. Wherein the light source is configured to emit a light beam, which is a scattered light beam. The first lens converts the scattered light beam into a collimated light beam; the second lens is positioned in the light emergent direction of the first lens, and the second lens is configured to converge the collimated light beam into a converging light beam. The optical fiber is positioned in the light emitting direction of the second lens, the first end face of the optical fiber is close to the second lens, and the second end face of the optical fiber is an inclined end face. The optical fiber receives the converging light beam emitted by the second lens and transmits the light beam from the first end face to the second end face. The end face of the second end of the optical fiber is an inclined end face, and the transmission direction of the emergent light beam is refracted at the interface between the second end face and air. The refractive index of the optical fiber is larger than that of air, so that light is emitted and refracted when entering the air from the second end face of the optical fiber, the included angle between the light and the normal line of the interface becomes large, the light is transmitted to the fixing adhesive which forms a specific included angle with the optical axis of the light source, and the fixing adhesive is solidified. Since the foregoing embodiments are all described in other modes by reference to the above, the same parts are provided between different embodiments, and the same and similar parts are provided between the embodiments in the present specification. And will not be described in detail herein.

It should be noted that in this specification, relational terms such as "first" and "second" and the like are 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, 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 circuit structure, article, or apparatus. Without further limitation, the statement "comprises" or "comprising" a … … "does not exclude that an additional identical element is present in a circuit structure, article or apparatus that comprises the element.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure of the utility model. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

The embodiments of the present utility model described above do not limit the scope of the present utility model.

Claims (8)

1. An optical module coupling tool, its characterized in that includes:

a light source configured to emit a light beam, the light beam being a scattered light beam;

the first lens is positioned in the light emitting direction of the light source; the first lens is configured to convert the scattered light beam into a collimated light beam;

a second lens located in the light-emitting direction of the first lens, the second lens configured to converge the collimated light beam into a converging light beam;

the optical fiber is positioned in the light emitting direction of the second lens, the first end face of the optical fiber is adjacent to the second lens, and the second end face of the optical fiber is an inclined end face.

2. The light module coupling jig of claim 1, wherein the light source, the first lens, the second lens, and the central axis of the optical fiber are on a straight line;

the light source is a point light source; the first lens is a collimating lens, and the second lens is a converging lens.

3. The optical module coupling jig according to claim 1 or 2, wherein an included angle between the second end face of the optical fiber and the central axis of the optical fiber is 30 ° -42 °.

4. The optical module coupling jig according to claim 1 or 2, wherein an included angle between the second end face of the optical fiber and the central axis of the optical fiber is 36 °.

5. The optical module coupling jig according to claim 1 or 2, further comprising: a lens barrel whose inside is hollow;

the light source, the first lens and the second lens are arranged inside the lens barrel;

the second end of the optical fiber is arranged outside the lens barrel.

6. The optical module coupling jig of claim 5, wherein the lens barrel comprises:

a light source fixing part configured in a cone structure, the light source being located at one end of the light source fixing part;

a lens fixing member having one end connected to the light source fixing member, the lens fixing member configured to fix the first lens and the second lens;

an optical fiber fixing member having one end connected to the lens fixing member and the other end connected to the optical fiber;

the first end of the optical fiber is positioned inside the lens barrel, and the second end of the optical fiber is positioned outside the lens barrel.

7. The optical module coupling jig of claim 6, wherein the diameter of the optical fiber is smaller than the diameter of the internal through-hole of the optical fiber adapter of the optical module.

8. The light module coupling jig according to claim 6, wherein the optical fiber fixing member is configured in a cylindrical structure, and an end of the light source fixing member remote from the light source is connected to the optical fiber fixing member;

the first lens is located between the second lens and the light source.