CN220438593U - Optical module - Google Patents

Abstract

The application relates to the technical field of optical communication equipment, in particular to an optical module. The application proposes an optical module, including circuit board and two at least lens subassembly, the lens subassembly includes: the shell comprises a bottom wall, a first side wall, a second side wall and a top wall, wherein the first side wall is provided with a socket, and a chamfer part is formed between the second side wall and the top wall; an optical lens body disposed inside the housing and mounted on the circuit board; an optical fiber; wherein the optical fiber of one of the lens assemblies passes through the top wall of the housing of the adjacent other of the lens assemblies, the chamfer of the housing of the adjacent other of the lens assemblies being configured to reduce the degree of bending of the optical fiber passing through the lens assembly. The service life of the optical fiber is prolonged, so that the service life of the optical module is prolonged, and the optical module is compact in structure and small in occupied space.

Description

Optical module

Technical Field

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

Background

In the fields of cloud computing, mobile internet and the like, optical communication equipment can be used, an optical module is a key device in the optical communication equipment, and an optical module structure type with a photoelectric conversion function realized by adopting an optical lens assembly has become a mainstream. As a key device, the lifetime of an optical module directly determines its reliability and market praise. The factors influencing the service life of the optical module are various, and an effective improvement idea is to improve the service life of the optical module by improving the heat dissipation area of the optical lens body, which can cause the arrangement of a circuit board to be not compact enough, so that the size of the whole optical module is enlarged. In addition, the optical fiber inside the optical module is also a relatively fragile component.

Disclosure of Invention

The application discloses optical module, it improves the life of optic fibre to improved optical module's life, and made optical module compact structure, occupation space is little.

Some embodiments of the present application provide an optical module, including a circuit board and at least two lens assemblies, at least two lens assemblies interval sets up, lens assemblies arrange in one side along thickness direction of circuit board, lens assemblies include: the shell comprises a bottom wall, a first side wall, a second side wall and a top wall, wherein the first side wall and the second side wall are arranged adjacent to the bottom wall, the bottom wall and the top wall are arranged oppositely, the bottom wall is mounted on the circuit board, the first side wall is provided with a socket, and a chamfer part is formed between the second side wall and the top wall; an optical lens body disposed inside the housing and mounted on the circuit board; one end of the optical fiber is inserted into the socket to be arranged corresponding to the optical lens body, and the other end of the optical fiber extends in a direction deviating from the shell; wherein the optical fiber of one of the lens assemblies passes through the top wall of the housing of the adjacent other of the lens assemblies, the chamfer of the housing of the adjacent other of the lens assemblies being configured to reduce the degree of bending of the optical fiber passing through one of the lens assemblies.

Optionally, the number of the lens assemblies is two, the two lens assemblies are arranged at intervals along a first direction, the first side wall and the second side wall are respectively located at two opposite sides of the housing along the first direction, the two lens assemblies are respectively a first lens assembly and a second lens assembly, the optical fiber of the second lens assembly is at least partially located at one side of the top wall of the housing of the first lens assembly, and the chamfer portion of the housing of the first lens assembly is configured to reduce the bending degree of the optical fiber of the second lens assembly.

Optionally, a spacing between the second side wall of the first lens assembly and the first side wall of the second lens assembly is W, and a cross-sectional area of the optical fiber of the second lens assembly is a, satisfying:

0.3mm≤W≤0.8mm，5mm2≤W≤10mm2。

optionally, the optical fiber of the second lens assembly has a flat cross section.

Optionally, the number of the optical fibers of the second lens assembly is plural, a plurality of the optical fibers are arranged side by side, and a plurality of the optical fibers are connected to the same connection terminal, and the connection terminal is inserted into the socket of the second lens assembly.

Optionally, the chamfer portion includes a guide surface, one side of the guide surface is connected with the top wall and forms a first edge, the other side is connected with the second side wall and forms a second edge, a distance between the second edge and the bottom wall is H1, a distance between the first edge and the bottom wall is H2, a distance between the first edge and the second side wall is L1, and a thickness of the housing is H, so that:

0.1≤(H2-H1)/H≤0.5，1≤L1/(H2-H1)≤4。

optionally, the chamfer portion is a right angle or an arc angle.

Optionally, the chamfer extends to both side edges of the housing.

Optionally, the number of the lens assemblies is two, the arrangement directions of the two lens assemblies are perpendicular to each other, the first side wall and the second side wall are respectively located at two adjacent sides of the housing, the two lens assemblies are respectively a first lens assembly and a second lens assembly, the socket of the second lens assembly and the chamfer portion of the first lens assembly are arranged towards each other, the optical fiber of the second lens assembly is at least partially located at one side of the top wall of the housing of the first lens assembly, and the chamfer portion of the housing of the first lens assembly is configured to reduce the bending degree of the optical fiber of the second lens assembly.

Optionally, at least two lens assemblies are disposed at equal intervals along a first direction, and the optical fibers extend along the first direction.

Compared with the prior art, the beneficial effect of this application lies in:

in the optical module of the embodiment of the application, the chamfer part can reduce the bending degree of the optical fiber, so that the possibility of damage to the optical fiber caused by bending is reduced, the service life of the optical fiber is prolonged, and the service life of the optical module is prolonged; on the other hand, the bending degree of the optical fiber is reduced, so that the service life of the optical fiber can be ensured on the basis of the same extension length of the optical fiber, and the service life of the optical fiber is not required to be ensured by extending the extension length, and the optical module can be compact in structure and small in occupied space.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic cross-sectional view of an optical module according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a lens assembly of an optical module according to an embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a top view of a first form of lens assembly in an optical module provided in an embodiment of the present application;

FIG. 5 is a top view of a second form of lens assembly in an optical module provided in an embodiment of the present application;

fig. 6 and fig. 7 are schematic structural diagrams of two different views of a first optical module according to an embodiment of the present application;

fig. 8 is a top view of a second optical module according to an embodiment of the present application.

Reference numerals illustrate: 100-optical module; 110-a circuit board; 111-a first surface; a 120-lens assembly; 121-a housing; 1211-a bottom wall; 1212-top wall; 1213-a first sidewall; 1214-a second sidewall; 1215-socket; 1216-a chamfer portion; 12161-a guide surface; 12162-first edge; 12163-a second edge; 1217-a third sidewall; 1218-fourth side wall; 122-an optical lens body; 123-optical fiber; 130-a first lens assembly; 131-a first housing; 132-a first optical fiber; 133-a first chamfer; 134-first socket; 140-a second lens assembly; 141-a second housing; 142-a second optical fiber; 143-a second chamfer; 144-a second socket; 150-connecting terminals; 210-a first section; 220-a second section; 230-third section; x-a first direction; z-a second direction; y-third direction.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In the related art, an optical module is used for converting an optical signal into an electrical signal, two ends of a circuit board are respectively provided with an optical transmission interface and an electrical transmission interface, the optical transmission interfaces are connected with optical fibers, the optical signal is projected into a sensor through an optical lens body to be changed into the electrical signal, and the electrical signal is transmitted to the electrical transmission interface through the circuit board and finally transmitted to a communication equipment terminal. However, the service life of the optical fiber is reduced because bending may occur during the optical fiber wiring process.

As shown in fig. 1 and 2, some embodiments of the present application disclose an optical module 100 including a circuit board 110 and at least two lens assemblies 120, the at least two lens assemblies 120 being disposed at a distance, the lens assemblies 120 being disposed at one side of the circuit board 110 in a thickness direction. The lens assembly 120 includes a housing 121, an optical lens body 122, and an optical fiber 123, the housing 121 includes a bottom wall 1211, a top wall 1212, a first side wall 1213, and a second side wall 1214, the first side wall 1213 and the second side wall 1214 are disposed adjacent to the bottom wall 1211, the bottom wall 1211 and the top wall 1212 are disposed opposite to each other, the bottom wall 1211 is mounted to the circuit board 110, the first side wall 1213 has a socket 1215, and a chamfer 1216 is formed between the second side wall 1214 and the top wall 1212. The optical lens body 122 is disposed inside the housing 121 and is mounted on the circuit board 110. One end of the optical fiber 123 is inserted into the insertion opening 1215 to be disposed corresponding to the optical lens body 122, and the other end extends in a direction away from the housing 121. The optical fiber 123 of one lens assembly 120 passes through the top wall 1212 of the housing 121 of the adjacent other lens assembly 120, and the chamfer 1216 of the housing 121 of the adjacent other lens assembly 120 is configured to reduce the degree of bending of the optical fiber 123 passing through that lens assembly 120.

In the optical module 100 of the embodiment of the present application, since the chamfer 1216 can reduce the bending degree of the optical fiber 123, on one hand, the possibility of damage of the optical fiber 123 due to bending is reduced, thereby improving the service life of the optical fiber 123 and the service life of the optical module 100; on the other hand, the bending degree of the optical fiber 123 is reduced, so that the service life of the optical fiber 123 can be ensured on the basis of the same extension length of the optical fiber 123, and the service life of the optical fiber 123 is not required to be ensured by extending the extension length, thereby realizing compact structure of the optical module 100 and small occupied space.

In some embodiments of the present application, the optical fiber 123 of one lens assembly 120 passes through the other lens assembly 120 and uses a chamfer 1216 to reduce its degree of bending; in other embodiments, wiring harnesses associated with other functional modules on the circuit board may pass through the lens assembly 120; the optical fiber 123 may be one.

In some embodiments of the present application, the number of lens assemblies 120 is two; in other embodiments, the number of lens assemblies 120 may be three or four, etc.

In some embodiments of the present application, at least two lens assemblies 120 are disposed at equal intervals along a first direction X, and optical fibers 123 extend along the first direction X to more regularly arrange the lens assemblies 120 to the circuit board 110.

In other embodiments, two adjacent lens assemblies 120 may also be vertically disposed.

Specifically, the optical fiber 123 of the other lens assembly 120 extends from one side to the other side of the second side wall 1214 of the housing 121, and the optical fiber 123 of the other lens assembly 120 is disposed as closely as possible to the circuit board 110 at a height lower than that of the top wall 1212, the optical fiber 123 of the other lens assembly 120 inevitably needs to pass through the top wall 1212 of the housing 121, and bending occurs in a portion of the optical fiber 123 of the other lens assembly 120 at a transition from the portion closely adjacent to the circuit board 110 to the portion passing through the top wall 1212. And the chamfer 1216 reduces the degree of bending of the optical fiber 123 of the other lens assembly 120 due to the shape of the housing 121, so that the quality of the optical fiber 123 of the other lens assembly 120 can be improved.

Further, including the first section 210, second section 220 and third section 230 that connect gradually, first section 210 is connected with socket 1215, second section 220 passes through from the roof 1212 of casing 121, and hugs closely as far as possible roof 1212, third section 230 is used for being connected with other parts electricity, still hug closely as far as possible the surface arrangement of circuit board 110, the junction of first section 210 and second section 220 corresponds with chamfer portion 1216, chamfer portion 1216 can reduce the bending degree of this junction to reduce the risk of damage of this junction.

The bottom wall 1211 of the housing 121 has an opening, and the housing 121 substantially covers the optical lens body 122, and the bottom wall 1211 is provided with a protrusion by which it is fixed to the circuit board 110. The manner in which the housing 121 and the circuit board 110 are fixed is conventional and will not be further described herein.

The housing 121 has a generally square configuration, and the first side wall 1213 and the second side wall 1214 may be disposed opposite to each other or may be disposed adjacent to each other; the chamfer 1216 may be provided only at a position where the optical fiber 123 of the other lens assembly 120 passes, or may extend to both side edges of the case 121 in a direction perpendicular to the extending direction of the optical fiber 123 of the other lens assembly 120; the chamfer 1216 may be rounded or beveled.

The technical scheme of the present application will be further described with reference to specific embodiments and drawings.

As shown in fig. 3, in some embodiments of the present application, the chamfer 1216 includes a guide surface 12161, one side of the guide surface 12161 is connected to the top wall 1212 and forms a first edge 12162, the other side is connected to the second side wall 1214 and forms a second edge 12163, a spacing between the second edge 12163 and the bottom wall 1211 is H1, a spacing between the first edge 12162 and the bottom wall 1211 is H2, a spacing between the first edge 12162 and the second side wall 1214 is L1, and a thickness of the housing 121 is H, satisfying:

0.1≤(H2-H1)/H≤0.5，1≤L1/(H2-H1)≤4。

the thickness direction of the circuit board 110 extends along the second direction Z, the lens assembly 120 is disposed on the first surface 111 (please refer to fig. 1) of the circuit board 110, and the thickness H of the housing 121 refers to the distance between the bottom wall 1211 and the top wall 1212 in the second direction Z. It will be appreciated that h2=h, based on the embodiment where the top wall 1212 is disposed parallel to the bottom wall 1211; if the top wall 1212 is disposed obliquely to the bottom wall 1211, the values of H2 and H are different.

With this arrangement, the bending degree of the optical fiber 123 of the other lens assembly 120 can be effectively reduced, and the structural strength of the housing 121 can be ensured to be good.

In some embodiments of the present application, the chamfer 1216 is a beveled right angle or rounded angle.

Based on the embodiment that the "chamfer 1216 is an oblique right angle", the guide surface 12161 is a plane; based on the embodiment in which the "chamfer 1216 is an arc angle", the guide surface 12161 is a curved surface protruding in a direction away from the outer surface of the housing 121.

The chamfer 1216 of both forms is simple in construction, easy to machine, and can significantly reduce the degree of bending of the optical fiber 123 of the other lens assembly 120.

In other embodiments, the chamfer 1216 may be a multi-faceted transition, or a combination of a right angle and a rounded corner.

In some embodiments of the present application, the chamfer 1216 extends to both side edges of the housing 121.

With this arrangement, the optical fiber 123 of the other lens assembly 120 can be allowed to pass through different locations of the top wall 1212, minimizing the degree of bending of the optical fiber 123 of the other lens assembly 120.

It will be appreciated that the direction of extension of the chamfer 1216 is perpendicular to the direction of extension of the optical fiber 123 of the other lens assembly 120.

For example, as shown in fig. 4, the optical fiber 123 of the other lens assembly 120 extends along the first direction X and passes through the top wall 1212, the second side wall 1214 is disposed opposite to the first side wall 1213 along the first direction X, the housing 121 includes a third side wall 1217 and a fourth side wall 1218 along both sides of the third direction Y, the chamfer 1216 extends along the third direction Y, and both side edges thereof extend to the third side wall 1217 and the fourth side wall 1218, respectively, and the third direction Y is perpendicular to the first direction X.

As another example, as shown in fig. 5, the optical fiber 123 of the other lens assembly 120 extends along the third direction Y and passes through the top wall 1212, the first side wall 1213 is located on one side of the housing 121 along the first direction X, the second side wall 1214 is located on one side of the housing 121 along the third direction Y, the chamfer 1216 extends along the first direction X, and both side edges thereof extend to the first side wall 1213 and the other side wall, respectively, and the third direction Y is perpendicular to the first direction X.

In other embodiments, along the third direction Y, the chamfer 1216 may also be only a portion of the housing 121, may extend to one side edge, or may be only in the middle; still alternatively, a plurality of chamfer portions 1216 may be provided, each chamfer portion 1216 does not penetrate through both side edges of the housing 121, and a plurality of chamfer portions 1216 are provided at intervals along the third direction Y, each chamfer portion 1216 corresponding to the optical fiber 123 of one other lens assembly 120.

As shown in fig. 4, 6 and 7, in some embodiments of the present application, the number of lens assemblies 120 is two, and the two lens assemblies 120 are disposed at equal intervals along the first direction X, and the first side wall 1213 and the second side wall 1214 are respectively located on opposite sides of the housing 121 along the first direction X. The two lens assemblies are a first lens assembly 130 and a second lens assembly 140, respectively, the optical fiber of the second lens assembly 140 is at least partially located at the top wall side of the housing of the first lens assembly 130, and the chamfer of the housing of the first lens assembly 130 is configured to reduce the bending degree of the optical fiber of the second lens assembly 140.

With this arrangement, the optical fiber 123 is an optical fiber of one of the lens assemblies 120, and the bending degree of the optical fiber can be reduced, thereby improving the service life of one of the lens assemblies 120.

Specifically, the first direction X and the second direction Z are disposed perpendicular to each other. The first lens assembly 130 has a corresponding first housing 131, a first optical fiber 132, a first chamfer 133, and a first socket 134, and the second lens assembly 140 has a corresponding second housing 141, a second optical fiber 142, a second chamfer 143, and a second socket 144. The first chamfer 133 and the second insertion opening 144 are disposed toward each other, and one end of the second optical fiber 142 is inserted into the second insertion opening 144, and the other end extends in the direction of the first housing 131 and passes through the top wall of the first housing 131. One end of the first optical fiber 132 is inserted into the first receptacle 134, and the other end extends in the same direction as the second optical fiber 142. It will be appreciated that since the first optical fiber 132 does not pass other obstacles, the first optical fiber 132 may be disposed against the first surface 111 of the circuit board 110, and the first optical fiber 132 is substantially unbent as a whole; the second optical fiber 142 passes through the first chamfer 133, and thus, the degree of bending of the second optical fiber 142 is reduced due to a reasonable adaptation of the height difference between the top wall of the first housing 131 and the second socket 144.

With this arrangement, the first lens assembly 130 and the second lens assembly 140 can be co-routed, simplifying the circuit design of the optical module 100.

As shown in fig. 5 and 8, in other embodiments of the present application, the number of lens assemblies 120 is two, the arrangement directions of the two lens assemblies 120 are perpendicular to each other, and the first side wall 1213 and the second side wall 1214 are respectively located at two adjacent sides of the housing 121. That is, the socket 1215 and the chamfer 1216 are respectively located on two side walls of the housing 121 perpendicular to each other. The two lens assemblies are respectively a first lens assembly 130 and a second lens assembly 140, the socket of the second lens assembly 140 and the chamfer of the first lens assembly 130 are arranged towards each other, the optical fiber of the second lens assembly 140 is at least partially positioned on one side of the top wall of the shell of the first lens assembly 130, and the chamfer of the shell of the first lens assembly 130 is configured to reduce the bending degree of the optical fiber of the second lens assembly 140.

As shown in fig. 8, the first socket 134 and the second chamfer 143 are disposed toward each other along the third direction Y, the second optical fiber 142 is at least partially located at the top wall side of the first housing 131, and the first chamfer 133 is configured to reduce the bending degree of the second optical fiber 142.

With this arrangement, the second chamfer 143 can also function to reduce the degree of bending of the first optical fiber 132.

As shown in fig. 6, in some embodiments of the present application, the spacing between the first sidewall of the second lens assembly 140 and the second sidewall of the first lens assembly 130 is W, that is, the spacing between the second socket 144 and the first chamfer 133 is W, and the cross-sectional area of the second optical fiber 142 is a, which satisfies:

0.3mm≤W≤0.8mm，5mm2≤A≤10mm2。

it is understood that the cross section of the second optical fiber 142 refers to a cross section along a direction perpendicular to the extending direction thereof.

By this arrangement, on the one hand, the possibility of damage to the second optical fiber 142 due to an excessive degree of bending can be significantly reduced, and on the other hand, the space between the first lens assembly 130 and the second lens assembly 140 can be reduced, thereby improving the compactness of the optical module 100 and the circuit module.

In some embodiments of the present application, the cross-section of the optical fiber of the second lens assembly 140 is flat, i.e., the cross-section of the second optical fiber 142 is flat.

By the arrangement mode, the thickness of the second optical fiber 142 in the second direction Z is reduced as much as possible on the basis of ensuring the communication capability of the second optical fiber, so that the bending difficulty of the second optical fiber is reduced, and the influence on the internal structure caused by bending is reduced.

In other embodiments, the cross-section of the second optical fiber 142 may also be circular or elliptical.

As shown in fig. 7, in some embodiments of the present application, the number of the second optical fibers 142 is plural, the plural second optical fibers 142 are arranged side by side, and the same end of the plural second optical fibers 142 is connected to the connection terminal 150, and the connection terminal 150 is inserted into the second socket 144.

With this arrangement, the complexity of inserting the plurality of second optical fibers 142 into the second receptacle 144 can be simplified.

For example, the number of the second optical fibers 142 may be two, three, four, or the like.

In other embodiments, the number of second optical fibers 142 may be one.

It will be appreciated that the first lens assembly 130 and the second lens assembly 140 are identical in structure, and that the construction of each lens assembly may be identical, thereby simplifying the assembly process.

In other embodiments of the present application, the number of lens assemblies 120 may be three or four, and so on, the third lens assembly uses the second chamfer 143 of the second lens assembly 140 to reduce the bending degree of its optical fiber, the fourth lens assembly 120 uses the chamfer of the third lens assembly 120 to reduce the bending degree of its optical fiber, and so on.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An optical module comprising a circuit board and at least two lens assemblies, at least two of the lens assemblies being disposed at an interval, the lens assemblies being disposed on one side of the circuit board in a thickness direction, the lens assemblies comprising:

the shell comprises a bottom wall, a first side wall, a second side wall and a top wall, wherein the first side wall and the second side wall are arranged adjacent to the bottom wall, the bottom wall and the top wall are arranged oppositely, the bottom wall is mounted on the circuit board, the first side wall is provided with a socket, and a chamfer part is formed between the second side wall and the top wall;

an optical lens body disposed inside the housing and mounted on the circuit board;

one end of the optical fiber is inserted into the socket to be arranged corresponding to the optical lens body, and the other end of the optical fiber extends in a direction deviating from the shell;

wherein the optical fiber of one of the lens assemblies passes through the top wall of the housing of the adjacent other of the lens assemblies, the chamfer of the housing of the adjacent other of the lens assemblies being configured to reduce the degree of bending of the optical fiber passing through the lens assembly.

2. The optical module of claim 1, wherein the number of lens assemblies is two, the two lens assemblies are disposed at equal intervals along a first direction, the first side wall and the second side wall are respectively located at two opposite sides of the housing along the first direction, the two lens assemblies are respectively a first lens assembly and a second lens assembly, the optical fiber of the second lens assembly is at least partially located at one side of a top wall of the housing of the first lens assembly, and the chamfer of the housing of the first lens assembly is configured to reduce a bending degree of the optical fiber of the second lens assembly.

3. The optical module of claim 2, wherein a spacing between the second side wall of the first lens assembly and the first side wall of the second lens assembly is W, and wherein a cross-sectional area of the optical fiber of the second lens assembly is a, satisfying:

0.3mm≤W≤0.8mm，5mm2≤A≤10mm2。

4. a light module as recited in claim 3, wherein said optical fiber of said second lens assembly is flattened in cross-section.

5. The optical module of claim 2, wherein the number of optical fibers of the second lens assembly is a plurality, the plurality of optical fibers being arranged side-by-side, the plurality of optical fibers being connected to a same connection terminal, the connection terminal being inserted into the receptacle of the second lens assembly.

6. The light module of claim 1 wherein the chamfer comprises a guide surface having one side connected to the top wall and forming a first edge and the other side connected to the second side wall and forming a second edge, the second edge being spaced from the bottom wall by a distance H1, the first edge being spaced from the bottom wall by a distance H2, the first edge being spaced from the second side wall by a distance L1, the housing having a thickness H:

0.1≤(H2-H1)/H≤0.5，1≤L1/(H2-H1)≤4。

7. the light module of claim 1 wherein the chamfer is a beveled right angle or a rounded corner.

8. The light module of claim 1 wherein the chamfer extends to both side edges of the housing.

9. The optical module according to claim 1, wherein the number of the lens assemblies is two, the arrangement directions of the two lens assemblies are perpendicular to each other, the first side wall and the second side wall are respectively located at two adjacent sides of the housing, the two lens assemblies are respectively a first lens assembly and a second lens assembly, the socket of the second lens assembly and the chamfer of the first lens assembly are mutually oriented, the optical fiber of the second lens assembly is at least partially located at one side of a top wall of the housing of the first lens assembly, and the chamfer of the housing of the first lens assembly is configured to reduce the bending degree of the optical fiber of the second lens assembly.

10. The optical module of claim 1 wherein at least two of said lens assemblies are co-directionally spaced along a first direction, said optical fibers extending along said first direction.