Lens module and electronic device

Abstract

The application provides a lens module, comprising a filter, a bearing seat, a metal sheet and a fixing member; the bearing seat has a first through hole; the bearing seat has a first surface and a second surface arranged opposite to the first surface; the second surface is inwardly recessed to form a receiving groove facing the first surface; the first through hole is in communication with the receiving groove; the metal sheet is accommodated in the receiving groove; the metal sheet has a second through hole; the central axis of the second through hole is collinear with the central axis of the first through hole; the metal sheet extends inwardly at the inner side wall of the second through hole to form a receiving platform; the filter is arranged on the receiving platform and accommodated in the first through hole; and the fixing member is arranged on the bearing seat and used for mounting the metal sheet on the bearing seat. The thin sheet design of the metal sheet reduces the thickness of the lens module; and the fixing member is used for fixing the bearing seat and the metal sheet, which is beneficial to the miniaturization design of the lens module. The application also provides an electronic device.

Description

Technical Field

[0001] This application relates to the technical field of electronic and optical devices, and more particularly to a lens module and electronic device. Background Technology

[0002] Currently, camera modules in electronic devices (mobile phones or computers) include a support base positioned between the lens and the circuit board. This integrally injection-molded support base has a through-hole, and a flange extends from the inner wall of the through-hole, on which a light filter is mounted. To ensure the flange's strength in supporting the light filter, its thickness is generally greater than 0.2mm. However, this design results in a relatively large thickness of the support base within the camera module, which is detrimental to the miniaturization of camera modules. Summary of the Invention

[0003] In view of this, this application provides a lens module to solve the above problems.

[0004] In addition, it is necessary to provide an electronic device that includes the lens module.

[0005] This application provides a lens module, including a filter, a carrier, a metal sheet, and a fixing member; the carrier has a first through hole, a first surface and a second surface disposed opposite to the first surface, the second surface being recessed toward the first surface to form a receiving groove, and the first through hole communicating with the receiving groove;

[0006] The metal sheet is housed in the receiving groove. The metal sheet has a second through hole. The central axis of the second through hole is collinear with the central axis of the first through hole. The metal sheet extends inward at the inner sidewall of the second through hole to form a receiving platform. The filter is disposed on the receiving platform and housed in the first through hole.

[0007] The fastener is disposed on the support base, and the metal sheet is installed on the support base.

[0008] In some embodiments, the thickness of the metal sheet is 0.08-0.1 mm.

[0009] In some embodiments, the receiving groove has a bottom surface connected to the metal sheet, and the fastener is disposed on the bottom surface;

[0010] The fastener includes a plurality of rivets, which are spaced apart on the bottom surface.

[0011] The metal sheet has a mounting hole at the position corresponding to the rivet post, and the rivet post cooperates with the mounting hole to fix the metal sheet on the support.

[0012] In some embodiments, adjacent rivet posts are spaced at equal intervals.

[0013] In some embodiments, the rivet has a protrusion extending out of the metal sheet, the protrusion being opposite to the bottom surface, and the length of the protrusion being less than 0.05 mm.

[0014] In some embodiments, a barrier layer is provided on the surface of the metal sheet.

[0015] In some embodiments, the receiving platform includes a fourth surface and a fifth surface disposed opposite to the fourth surface, the filter is disposed on the fourth surface, and an inclined surface is connected between the fourth surface and the fifth surface, the inclined surface being close to the second through hole, and the angle between the inclined surface and the fourth surface being an acute angle.

[0016] In some embodiments, the support base is further provided with a first vent hole that penetrates the support base, and the metal sheet is provided with a second vent hole at the position corresponding to the first vent hole.

[0017] In some embodiments, the fastener is integrally formed with the support base.

[0018] This application also provides an electronic device including the lens module.

[0019] In this application, the combination of the carrier and the metal sheet forms a receiving platform. The structural strength of the metal sheet itself is used to support the filter, and the carrier and the metal sheet are fixed by a fastener. This combination can reduce the thickness of the receiving platform in the prior art, further reduce the thickness of the carrier, and realize the miniaturization design of the lens module. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a lens module provided in an embodiment of this application.

[0021] Figure 2 yes Figure 1 An exploded view of the lens module in one embodiment is shown.

[0022] Figure 3 yes Figure 1 An exploded view of the support base and metal sheet from another perspective in one embodiment shown.

[0023] Figure 4 yes Figure 1 The diagram shows a structural schematic of the connection between the support base and the metal sheet in one embodiment.

[0024] Figure 5 yes Figure 1 A cross-sectional view of the lens module along VV is shown in one embodiment.

[0025] Figure 6 yes Figure 1 A cross-sectional view of the lens module along VI-VI in one embodiment is shown.

[0026] Figure 7 This is a perspective view of the electronic device of a lens module provided in an embodiment of this application.

[0027] Explanation of main component symbols

[0028] Lens Module 100

[0029] Circuit Board 10

[0030] First section 11

[0031] Second section 12

[0032] Third section 13

[0033] Base 14

[0034] Electrical connection part 21

[0035] Image sensor 22

[0036] Electronic Components 23

[0037] Support 30

[0038] First through hole 31

[0039] First surface 32

[0040] Second surface 33

[0041] Container 34

[0042] Bottom 35

[0043] First vent 36

[0044] Metal sheet 40

[0045] Second through hole 41

[0046] Second vent 42

[0047] Contractor 43

[0048] Fourth surface 432

[0049] Fifth surface 433

[0050] Incline 434

[0051] Sharp angle 435

[0052] Barrier layer 436

[0053] Mounting hole 44

[0054] Fastener 50

[0055] Rivet 51

[0056] Protrusion 511

[0057] Filter 60

[0058] Lens assembly 70

[0059] Lens 71

[0060] Mirror base 72

[0061] First adhesive layer 81

[0062] Second adhesive layer 82

[0063] Third adhesive layer 83

[0064] Electronic devices 200

[0065] The following detailed implementation methods will be combined with the above appendix. Figure 1-7 Further explanation of this application. Detailed Implementation

[0066] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0067] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0069] To further illustrate the technical means and effects adopted by this application in achieving its intended purpose, the following detailed description of this application is provided in conjunction with the accompanying drawings and embodiments.

[0070] Please see Figure 1 and Figure 2This application provides a lens module 100, including a circuit board 10, an electrical connection portion 21, a photosensitive chip 22, electronic components 23, a carrier 30, a metal sheet 40, a filter 60, and a lens assembly 70. The electrical connection portion 21 and the photosensitive chip 22 are both disposed on the circuit board 10. The electronic components 23 are disposed around the edge of the photosensitive chip 22. The carrier 30 is disposed on the circuit board 10. The filter 60 and the metal sheet 40 are disposed within the carrier 30. The lens assembly 70 is disposed on the carrier 30.

[0071] See Figure 2 The circuit board 10 includes a first board portion 11, a second board portion 12, and a third board portion 13. The lens assembly 70 is mounted on the first board portion 11, and the second board portion 12 is connected between the first board portion 11 and the third board portion 13. The circuit board 10 has a base surface 14, and the photosensitive chip 22 is disposed on the base surface 14 and located on the first board portion 11. The circuit board 10 can be a flexible board, a rigid board, or a rigid-flex board. In this embodiment, the circuit board 10 is a rigid-flex board, the first board portion 11 and the third board portion 13 are both rigid boards, and the second board portion 12 is a flexible board. The third board portion 13 is provided with an electrical connection portion 21, which is located on the base surface 14. The electrical connection portion 21 can be a connector or a gold finger, used to realize signal transmission between the lens module 100 and other electronic components 23 in the electronic device 200.

[0072] See Figure 2 The first board 11 has multiple electronic components 23 disposed at the edge of the photosensitive chip 22. The electronic components 23 can be passive components such as resistors, capacitors, diodes, transistors, relays, and electrically erasable programmable read-only memory (EEPROM).

[0073] See Figure 2 A first adhesive layer 81 is provided between the circuit board 10 and the carrier 30, and the carrier 30 is fixed to the circuit board 10 by the first adhesive layer 81.

[0074] See Figure 2 , Figure 3 and Figure 4The support base 30 is generally square and has a first through hole 31. The support base 30 includes a first surface 32 and a second surface 33, which are located on two opposite surfaces of the support base 30. The second surface 33 is close to the first plate portion 11 and is recessed towards the first surface 32 to form a receiving groove 34. The first through hole 31 communicates with the receiving groove 34. The receiving groove 34 has a bottom surface 35, which is the bottom of the receiving groove 34. A metal sheet 40 is disposed within the receiving groove 34 and fits against the bottom surface 35. The metal sheet 40 has a second through hole 41, the central axis of which is collinear with the central axis of the first through hole 31. The metal sheet 40 extends inward at the inner wall of the second through hole 41 to form a receiving platform 43. A filter 60 is disposed on the receiving platform 43 and received within the first through hole 31.

[0075] See Figure 2 , Figure 3 and Figure 5 A fastener 50 is disposed on the bottom surface 35 of the support 30 for mounting the metal sheet 40 onto the support 30. In some embodiments, both the support 30 and the fastener 50 are made of thermoplastic material and are integrally molded by thermoplastic molding. The fastener 50 includes a plurality of rivets 51, which are spaced apart on the bottom surface 35. In this embodiment, four rivets 51 are used as an example, and the four rivets 51 are evenly spaced on the bottom surface 35. The metal sheet 40 is generally square, and the metal sheet 40 has mounting holes 44 at the positions corresponding to the four rivets 51. One end of each rivet 51 passes through the mounting hole 44, and the metal sheet 40 is fixed to the support 30 by a hot riveting process. The hot riveting process can enhance the bonding strength between the support 30 and the metal sheet 40.

[0076] See Figure 3 and Figure 5 In some embodiments, the rivet 51 has a protrusion 511 protruding from the metal sheet 40, the protrusion 511 being away from the bottom surface 35. The hot riveting process specifically involves heating the end of the rivet 51 using ultrasound, hot gas, a hot mold, or infrared heat, causing the rivet 51 extending from the mounting hole 44 of the metal sheet 40 to melt. Then, pressure is applied to the end of the rivet 51 using a jig, and the rivet is solidified to form a protrusion 511 with a cross-sectional area larger than the mounting hole 44, which can firmly fix the metal sheet 40 to the support 30.

[0077] See Figure 3 and Figure 5 In some embodiments, the length W1 of the protrusion 511 is less than 0.05 mm. If the length of the protrusion 511 is greater than 0.05 mm, it will affect the installation of the electronic component 23 near the protrusion 511 and will not be conducive to the miniaturization design of the lens module 100.

[0078] See Figure 3 and Figure 5 In some embodiments, the metal sheet 40 is formed by stamping. The thickness W2 of the metal sheet 40 is 0.08-0.1 mm. Within this thickness range, the metal sheet 40 can not only effectively support the filter 60, but also reduce the thickness of the lens module 100, which is beneficial for the miniaturization design of the lens module 100.

[0079] See Figure 2 and Figure 3 In some embodiments, the four adjacent rivet posts 51 are spaced equally apart. This arrangement can improve the strength of the bond between the metal sheet 40 and the support 30.

[0080] See Figure 2 and Figure 3 In some embodiments, a barrier layer 436 is provided on the surface of the metal sheet 40. Specifically, the barrier layer 436 is formed by spraying and baking paint to blacken the surface of the metal sheet 40, wherein the thickness of the spray coating is 0.01-0.015mm. This can reduce the reflectivity of the surface of the metal sheet 40, improve the imaging quality of the lens module 100, and reduce the risk of exposure.

[0081] See Figure 4 , Figure 5 and Figure 6 The receiving platform 43 includes a fourth surface 432 and a fifth surface 433 disposed opposite to the fourth surface 432. A filter 60 is disposed on the fourth surface 432. A bevel 434 connects the fourth surface 432 and the fifth surface 433. The bevel 434 is close to the second through hole 41, and the angle between the bevel 434 and the fourth surface 432 is an acute angle. Compared to the rounded corners in the prior art, the connection between the bevel 434 and the fourth surface 432 in this application forms a sharp corner 435, which can prevent incident light from the lens assembly 70 from reflecting at the sharp corner 435, thereby preventing stray light from the lens module 100 and improving image quality.

[0082] See Figure 2 In some embodiments, a second adhesive layer 82 is provided between the filter 60 and the receiving platform 43, and the filter 60 is fixed to the receiving platform 43 by the second adhesive layer 82.

[0083] See Figure 2 , Figure 3 and Figure 4 In some embodiments, the support base 30 is also provided with a first vent hole 36 that penetrates the first surface 32 and the bottom surface 35, and the metal sheet 40 is provided with a second vent hole 42 at the position corresponding to the first vent hole 36, and the size of the first vent hole 36 and the second vent hole 42 are corresponding.

[0084] See Figure 2The lens assembly 70 is mounted on the support 30. The lens assembly 70 includes a lens 71 and a lens mount 72, with the lens 71 mounted on the lens mount 72. The lens mount 72 is generally square and its size is adapted to the support 30. A third adhesive layer 83 is provided between the lens mount 72 and the support 30 to fix the lens mount 72 assembly to the support 30.

[0085] See Figure 7 The lens module 100 can be applied to various electronic devices 200 with camera modules, such as mobile phones, wearable devices, vehicles, cameras, or monitoring devices. In this embodiment, the lens module 100 is applied to a mobile phone.

[0086] In this application, the combination of the support base 30 and the metal sheet 40 forms a receiving platform 43. The structural strength of the metal sheet 40 is used to support the filter 60, and the support base 30 and the metal sheet 40 are fixed by the fastener 50. This combination can reduce the thickness of the receiving platform 43 in the prior art, further reduce the thickness of the support base 30, and realize the miniaturization design of the lens module 100.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A lens module, characterized in that, include: Filters; The support has a first through hole, the support has a first surface and a second surface disposed opposite to the first surface, the second surface is recessed toward the first surface to form a receiving groove, and the first through hole communicates with the receiving groove; A metal sheet is housed in the receiving groove. The metal sheet has a second through hole, the central axis of the second through hole is collinear with the central axis of the first through hole, and the metal sheet extends inward at the inner sidewall of the second through hole to form a receiving platform. The filter is disposed on the receiving platform and housed in the first through hole. The fastener includes multiple rivets, the receiving groove has a bottom surface connected to the metal sheet, the fastener is disposed on the bottom surface, and the multiple rivets are spaced apart on the bottom surface; the metal sheet has mounting holes at positions corresponding to the rivets, and the rivets cooperate with the mounting holes to fix the metal sheet on the support; the support also has a first vent hole penetrating the support, and the metal sheet has a second vent hole at positions corresponding to the first vent hole.

2. The lens module as described in claim 1, characterized in that, The thickness of the metal sheet is 0.08-0.1 mm.

3. The lens module as described in claim 1, characterized in that, The adjacent rivet posts are spaced at equal intervals.

4. The lens module as described in claim 1, characterized in that, The rivet has a protrusion extending out of the metal sheet, the protrusion being away from the bottom surface, and the length of the protrusion being less than 0.05 mm.

5. The lens module as described in claim 1, characterized in that, A barrier layer is provided on the surface of each metal sheet.

6. The lens module as described in claim 1, characterized in that, The receiving platform includes a fourth surface and a fifth surface disposed opposite to the fourth surface. The filter is disposed on the fourth surface. An inclined surface is also connected between the fourth surface and the fifth surface. The inclined surface is close to the second through hole. The angle between the inclined surface and the fourth surface is an acute angle.

7. The lens module as described in claim 1, characterized in that, The fastener is integrally formed with the bearing seat.

8. An electronic device, characterized in that, Includes the lens module as described in any one of claims 1-7.

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