CN216792521U

CN216792521U - Optical module

Info

Publication number: CN216792521U
Application number: CN202220192456.2U
Authority: CN
Inventors: 周贤; 于登群
Original assignee: Innolight Technology Suzhou Ltd
Current assignee: Innolight Technology Suzhou Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-06-21
Anticipated expiration: 2032-01-24

Abstract

The application discloses optical module, optical module includes: a housing, a substrate, an optical assembly, and a sealing cover. The shell comprises a first shell, a second shell covered on the first shell, and an installation space formed by covering the first shell and the second shell. The substrate is fixed to the installation space. The optical assembly is arranged on the substrate. The sealing cover is used for covering the optical assembly and is fixed on the substrate. The sealing cover includes: the sealing area is provided with a glue injection structure for injecting glue, so that the sealing cover is bonded on the substrate to seal the optical assembly. This application optical module passes through sealed lid can make optical assembly sealed work in inclosed environment, moreover the structure of sealed lid makes the injecting glue easy and simple to handle, and is sealed effectual.

Description

Optical module

Technical Field

The application relates to the technical field of optical modules, in particular to an optical module with a sealing cover.

Background

Generally, an optical module (for example, a light emitting module) can hermetically package internal devices in order to isolate moisture and dust or protect the internal devices from being collided during an assembling process, so that the overall reliability of the optical module is improved.

The sealing cover is used in the optical module to ensure that the optical system can work in a closed environment. A common method is to attach a sealing cap to a substrate inside the optical module by glue, thereby isolating the optical device from the outside. However, the optical module has a limited inner space, the elements are arranged tightly, the installation operation space of the sealing cover is narrow, the dispensing operation is difficult, and the defect of a vacant spot is easy to occur, so that the bonding strength is reduced, the sealing performance of the optical module is reduced, and the safety of the covering cannot be guaranteed.

Therefore, improvements are urgently needed to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an optical module to solve the problem that operation is difficult, the sealed effect is poor when sealing optical assembly among the prior art.

In order to achieve the purpose, the following technical scheme is adopted in the application.

An embodiment of the present application provides an optical module, including: a housing, a substrate, an optical assembly, and a sealing cover. The shell comprises a first shell, a second shell covered on the first shell, and an installation space formed by covering the first shell and the second shell. The substrate is fixed to the installation space. The optical assembly is arranged on the substrate. The sealing cover is used for covering the optical assembly and is fixed on the substrate, and the sealing cover comprises: a body region and at least one sealing region, the sealing region being disposed adjacent to the body region; the sealing area is provided with a glue injection structure for injecting glue, so that the sealing cover is bonded on the substrate to seal the optical assembly.

Optionally, in some embodiments of the present application, the sealing region has an operative surface and a sealing surface, the sealing surface facing the substrate, the operative surface facing away from the substrate; the glue injection structure is exposed on the operation surface, and the sealing surface is used for forming sealing connection with the structure to be packaged.

Optionally, in some embodiments of the present application, the glue injection structure includes a plurality of glue injection holes, each of the glue injection holes has a glue injection port and a glue outlet, the glue injection port is disposed on the operation surface of the sealing area, and the glue outlet is disposed on the sealing surface of the sealing area.

Optionally, in some embodiments of the present application, the glue injection holes are uniformly arranged in the sealing region. In the sealing area, the glue injection holes are arranged in a single row or multiple rows.

Optionally, in some embodiments of the present application, the glue injection hole is provided in a conical shape.

Optionally, in some embodiments of the present application, the glue injection structure further includes a groove, and the glue injection opening of the glue injection hole is exposed in the groove.

Optionally, in some embodiments of the present application, the trench is disposed on the operation surface, and the trench surrounds the body region.

Optionally, in some embodiments of the present application, the sealing cover is a frame; the main body area is the top of the frame body; the sealing area is a side wall of the frame body; wherein the sealing region forms a cavity around the body region for accommodating the optical component.

Optionally, in some embodiments of the present application, the optical assembly comprises a light emitting device and a lens; the base plate comprises a circuit board and a heat sink plate, and the heat sink plate is fixed on the circuit board; wherein the optical assembly is disposed on the heat sink plate, and the sealing cover covers and seals the optical assembly; the sealing cover is fixed on the heat sink plate; or one part of the sealing cover is fixed on the circuit board, and the other part of the sealing cover is fixed on the heat sink plate.

Optionally, in some embodiments of the present application, the optical assembly comprises a light emitting device and a lens; the substrate comprises a circuit board, the optical assembly is arranged on the circuit board, the sealing cover covers and seals the optical assembly, and the sealing cover is fixed on the circuit board.

In conclusion, the beneficial effects of the application are that: the embodiment of the application provides an optical module, it adopts sealed lid sealed optical assembly, sealed lid can be fixed in on the base plate and lid, sealed optical assembly. The sealing area of the sealing cover is provided with a glue injection structure, so that an operator can conveniently inject glue, and the sealing area of the sealing cover can be in sealing connection with the substrate to seal the optical assembly. The structure enables glue injection to be simple and convenient to operate and has a good sealing effect. The optical module of this application can make optical component sealed work in airtight environment through sealed lid.

Drawings

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

Fig. 1 is a schematic structural diagram of an optical module in one direction in the embodiment of the present application.

Fig. 2 is a schematic view of a disassembled structure of the optical module shown in fig. 1.

Fig. 3 is a schematic structural diagram of another direction of the optical module in the embodiment of the present application.

Fig. 4 is a schematic view of a disassembled structure of the optical module shown in fig. 3.

Fig. 5 is a schematic structural view of the optical module shown in fig. 4 after further disassembly, wherein a schematic structural view of the sealing cover leaving the substrate to expose the optical module is mainly shown.

Fig. 6 is a schematic structural view of a sealing cover in an embodiment of the present application, in which a top surface of the sealing cover is mainly shown.

Fig. 7 is a schematic view showing a bottom structure of the sealing cover shown in fig. 6.

Description of the main reference numerals:

optical module 1 housing 10

First housing 11 and second housing 12

Mounting space 13 first interface 14

Second interface 15 substrate 20

Circuit board 21 heat sink plate 22

Optical assembly 30 seals cap 40

Bulk region 41 receptacle 410

Sealing area 42 operative surface 421

Sealing surface 422 glue injection structure 43

Glue injection hole 431 and glue injection opening 431a

The glue outlets 431b are grooves 432.

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. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless otherwise stated, the use of directional terms such as "upper", "lower", "left" and "right" may refer to the actual use or operation of the device, may refer to the drawing direction in the drawings, and may refer to two opposite directions; while "inner" and "outer" are with respect to the outline of the device.

Referring to fig. 1 to 5, an optical module 1 provided in the embodiment of the present application includes a housing 10, a substrate 20, an optical assembly 30, and a sealing cover 40. The housing 10 includes a first housing 11, a second housing 12 covering the first housing 11, and an installation space 13 formed by covering the first housing 11 and the second housing 12; the substrate 20 is fixed to the installation space 13; the optical assembly 30 is disposed on the substrate 20; the sealing cover 40 is used for covering the optical assembly 30, fixing on the substrate 20 and sealing the optical assembly 30.

Referring to fig. 6 and 7 in combination, the sealing cover 40 according to the embodiment of the present disclosure includes: a body region 41 and at least one sealing region 42. The sealing region 42 is arranged adjacent to the body region 41. The sealing region 42 is provided with a glue injection structure 43 for injecting glue, so that the sealing cover 40 is bonded to the substrate 20 to seal the optical assembly 30.

Further, the sealing cover 40 provided in the embodiment of the present application can be used to cover the optical assembly 30, and a glue sealing ring is formed at the bottom of the sealing cover 40 by injecting glue into the glue injection structure 43, so as to ensure that the optical assembly 30 can work in a sealed environment.

As can be seen from this, the embodiment of the present application provides an optical module 1, in which an optical module 30 is sealed by using a sealing cover 40, and the sealing cover 40 can be fixed on the substrate 20 and cover and seal the optical module 30. The glue injection structure 43 is disposed in the sealing area 42 of the sealing cover 40, so that an operator can conveniently inject glue, the sealing area 42 can seal the optical assembly 30, and the sealing cover 40 forms a closed space for the optical assembly 30. The structure enables glue injection to be simple and convenient to operate and has a good sealing effect.

The structure of the sealing cover 40 will be described in more detail below.

Specifically, as shown in fig. 6 and 7, the sealing cover 40 is a frame. The body region 41 is the top of the frame; the sealing area 42 is a side wall of the frame body; wherein the sealing region 42 surrounds the body region 41 to form a

cavity

410, 410 for accommodating the optical component 30. For example, the cavity 410 can accommodate the optical module 30 of the optical module 1, and the sealing cover 40 is used to seal the optical module 30 on the substrate 20, so as to provide a sealed working environment for the optical module 30. The top is defined herein with reference to the orientation of the drawings and is not limited to the top which is absolute in use.

In other embodiments, the sealing cover 40 is not necessarily a frame structure, and may be another type provided with the glue injection structure 43, for example, according to the structure to be sealed.

In the embodiment of the present application, the body region 41 of the sealing cover 40 has a substantially plate shape. In particular use, the body region 41 can cover the optical element 30.

In the present embodiment, the sealing cover 40 includes at least one sealing region 42, and the sealing region 42 is disposed adjacent to the main body region 41. For example, the sealing region 42 is provided at an edge position of the body region 41. In the present embodiment, the sealing cover 40 surrounds the body region 41. This design may further facilitate the formation of a seal at the bottom of the seal cap 40. Of course, in other embodiments, the sealing cover 40 may include a plurality of the sealing regions 42. A plurality of said sealing regions 42 may be joined together around said body region 41; or may be layered to form multiple hermetic barriers.

In the present embodiment, the sealing area 42 of the sealing cover 40 has an operating surface 421 and a sealing surface 422, wherein fig. 6 shows the operating surface 421 and fig. 7 shows the sealing surface 422. The operative surface 421 is remote from the substrate 20 and the sealing surface 422 is directed towards the substrate 20. The glue injection structure 43 is exposed on the operation surface 421, so that the glue injection operation is facilitated; the sealing surface 422 is used to form a sealing connection with the substrate 20 to seal the optical assembly 30.

More specifically, the sealing cover 40 provided in the embodiment of the present application is the frame body, and the main body region 41 is the top of the frame body; the sealing region 42 is a sidewall of the frame. In this embodiment, the operation surface 421 is one end surface (e.g., defined as a top surface according to fig. 6) of the sidewall of the frame; the sealing surface 422 is the other end surface (e.g., defined as the bottom surface according to fig. 7) of the sidewall of the frame. Furthermore, the operating surface 421 is substantially flush with the top surface of the body region 41, and the sealing surface 422 is flush with the opening of the cavity 410.

In other embodiments, the operative surface 421 and the sealing surface 422 are not limited to flat surfaces, and may include horizontal surfaces, inclined surfaces, or stepped surfaces.

In the embodiment of the present application, as shown in fig. 6 and 7, the glue injection structure 43 includes a plurality of glue injection holes 431, the glue injection holes 431 have a glue injection opening 431a and a glue outlet opening 431b, and the glue injection opening 431a is located on the operation surface 421 of the sealing area 42; the glue outlet 431b is located on the sealing surface 422 of the sealing area 42. In other words, the glue injection hole 431 penetrates the operation surface 421 and the sealing surface 422.

During dispensing, filling or injecting glue, the glue is injected from the glue injection port 431a, flows downwards along the glue injection hole 431, and flows out from the glue outlet 431b, so that a glue sealing ring can be formed at the bottom of the sealing cover 40.

In the embodiment of the present application, as shown in fig. 6, the glue injection holes 431 are uniformly arranged in the sealing area 42, and the glue injection holes 431 are arranged in a single row. However, in other embodiments, the glue injection holes 431 may be arranged in a plurality of rows.

In the embodiment of the present application, the glue injection hole 431 is provided in a tapered shape, more vividly, a funnel shape.

In other embodiments, the glue injection hole 431 may have other tapered shapes or other shapes that facilitate the downward flow of the glue. This is not to be taken as an example.

In addition, the glue injection structure 43 further includes a groove 432. Specifically, the groove 432 is disposed on the operating surface 421 and surrounds the body region 41, and the glue injection opening 431a of the glue injection hole 431 is exposed in the groove 432. The sealing cover 40 provided by the embodiment of the application is provided with the groove 432, so that an operator can conveniently perform glue injection operation, glue can smoothly flow into the glue injection hole 431 from the groove 432, and redundant glue can overflow and remain in the groove 432. In the embodiment of the present application, the sealing cover 40 covers the optical assembly 30, and glue is injected through the glue injection structure 43, so that a glue sealing ring is formed at the bottom of the sealing cover 40, and the sealing cover 40 is bonded to the substrate 20 to seal the optical assembly 30. Thus, the optical assembly 30 of the optical module 1 according to the present application can be sealed inside said cavity 410.

Next, other structures of the optical module 1 according to the embodiment of the present application will be described.

As shown in fig. 4 and 5, the optical assembly 30 provided in the embodiment of the present application includes a light emitting device and a lens.

As shown in fig. 4 and 5, the substrate 20 provided by the embodiment of the present application includes a circuit board 21 and a heat sink plate 22, and the heat sink plate 22 is fixed on the circuit board 21. For example, the heat sink plate 22 may be fixed to the circuit board 21 by means of glue bonding.

In the embodiment of the present application, the optical module 30 is disposed on the heat sink plate 22, and the heat sink plate 22 and the optical module 30 are located in the installation space 13 of the optical module 1. The sealing cover 40 covers and seals the optical assembly 30, and the sealing cover 40 is fixed on the heat sink plate 22 in a sealing manner by injecting glue through the glue injection structure 43. Of course, the sealing cover 40 can be designed to cover both the circuit board 21 and the heat sink plate 22, for example, a portion of the sealing cover 40 is fixed to the circuit board 21, and another portion is fixed to the heat sink plate 22, and the optical assembly 30 is covered and sealed by spanning the circuit board 21 and the heat sink plate 22.

In addition, in some other embodiments, the substrate 20 includes a circuit board 21, but the heat sink plate 22 is not necessarily provided, and the optical assembly 30 may be disposed on the circuit board 21, and the sealing cover 40 covers and seals the optical assembly 30, and the sealing cover 40 is fixed on the circuit board 21 by injecting glue through the glue injection structure 43. That is, the sealing cover 40 may directly cover the circuit board 21, cover and seal the optical assembly 30.

Therefore, the sealing cover 40 can be applied to a plurality of application scenarios, and can be adjusted according to the actual application environment.

As shown in fig. 1 and 3, the optical module 1 includes a first interface 14 and a second interface 15, where the first interface 14 and the second interface 15 are respectively located at two opposite ends of the housing 10. The first interface 14 serves as an electrical interface, and one end of the substrate 20 protrudes out of the first interface 14 for electrical connection with the outside. The second interface 15 serves as an optical interface for external optical fibers.

In this embodiment, the first housing 11 is a base, the second housing 12 is a cover, and the first housing 11 and the second housing 12 may be fastened and connected by a screw structure, or may be fastened and connected by a hook and a buckle.

In the embodiment of the present application, the optical module 1 further includes an optical fiber, an optical fiber external device, and the like, and since the present design is not modified for these members, a specific structure thereof is omitted in the drawings.

To sum up, the embodiment of the present application provides an optical module 1, it adopts sealed lid 40 to seal optical assembly 30, sealed lid 40 can be fixed in on the base plate 20 and the lid closes, seals optical assembly 30 sealed seal area 42 of sealed lid 40 is provided with injecting glue structure 43, can make things convenient for the operator to pour into glue into, makes sealed area 42 of sealed lid 40 can be right optical assembly 30 forms sealedly. The structure enables glue injection to be simple and convenient to operate and has a good sealing effect.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The technical solutions provided by the embodiments of the present application are introduced in detail, and specific examples are applied in the description to explain the principles and embodiments of the present application, and the descriptions of the embodiments are only used to help understanding the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A light module, comprising:

the shell comprises a first shell, a second shell covered on the first shell, and an installation space formed by covering the first shell and the second shell;

a substrate fixed to the mounting space;

an optical assembly disposed on the substrate; and

a sealing cover for covering the optical assembly and being fixed to the substrate, the sealing cover comprising: a body region and at least one sealing region, the sealing region being disposed adjacent to the body region;

the sealing area is provided with a glue injection structure for injecting glue, so that the sealing cover is bonded on the substrate to seal the optical assembly.

2. The optical module of claim 1, wherein the sealing region has an operative surface and a sealing surface, the sealing surface facing the substrate and the operative surface facing away from the substrate; the glue injection structure is exposed on the operation surface, and the sealing surface is used for forming sealing connection with the substrate.

3. The optical module according to claim 2, wherein the glue injection structure comprises a plurality of glue injection holes, each glue injection hole has a glue injection port and a glue outlet, the glue injection ports are disposed on the operation surface of the sealing area, and the glue outlet is disposed on the sealing surface of the sealing area.

4. The optical module of claim 3, wherein the glue injection holes are uniformly arranged in the sealing area; in the sealing area, the glue injection holes are arranged in a single row or multiple rows.

5. The optical module of claim 3, wherein the glue injection hole is provided in a tapered shape.

6. The optical module as claimed in claim 3, wherein the glue injection structure further comprises a groove, and the glue injection opening of the glue injection hole is exposed in the groove.

7. The optical module of claim 6, wherein the groove is disposed on the operating surface, the groove surrounding the body region.

8. The optical module of claim 1, wherein the sealing cover is a frame;

the main body area is the top of the frame body;

the sealing area is a side wall of the frame body;

wherein the sealing region forms a cavity around the body region for accommodating the optical component.

9. The light module of claim 1, wherein the optical assembly comprises a light emitting device and a lens;

the base plate comprises a circuit board and a heat sink plate, and the heat sink plate is fixed on the circuit board;

wherein the optical assembly is disposed on the heat sink plate, and the sealing cover covers and seals the optical assembly;

the sealing cover is fixed on the heat sink plate; or one part of the sealing cover is fixed on the circuit board, and the other part of the sealing cover is fixed on the heat sink plate.

10. The light module of claim 1, wherein the optical assembly comprises a light emitting device and a lens;

the substrate comprises a circuit board, the optical assembly is arranged on the circuit board, the sealing cover covers and seals the optical assembly, and the sealing cover is fixed on the circuit board.