CN111050058A

CN111050058A - Camera module and electronic product

Info

Publication number: CN111050058A
Application number: CN202010007014.1A
Authority: CN
Inventors: 邹兵; 陈亮
Original assignee: Kunshan Q Technology Co Ltd
Current assignee: Kunshan Q Technology Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-21

Abstract

The invention discloses a camera module and an electronic product, wherein the camera module comprises a circuit board, an imaging element, a support, an optical filter and a lens assembly, the support is arranged on the circuit board, the imaging element is arranged in an accommodating cavity formed by the support, the imaging element is electrically connected with the circuit board, the optical filter is arranged in the support, the imaging element and the optical filter are positioned on an optical axis of the lens assembly, the optical filter is positioned between the imaging element and the lens assembly, and the lens assembly is arranged on the support, wherein the lens assembly comprises a lens barrel and a lens group, the lens group is arranged in the lens barrel, the lens barrel comprises a plastic platform and a metal frame, and the metal frame is combined with the plastic platform. In this camera module and electronic product, because the lens cone includes plastic platform and metal frame, the metal frame has the condition of less thickness still to have higher intensity, consequently can reduce the size of whole lens cone, reduces the camera module and at radial size D2, realizes the miniaturization of camera module, does benefit to the screen that improves electronic product and accounts for than.

Description

Camera module and electronic product

Technical Field

The invention relates to the technical field of imaging, in particular to a camera module and an electronic product.

Background

At present, various electronic products, such as portable electronic products like mobile phones, cameras, tablet computers, etc., generally have functions of taking pictures and taking pictures, and the camera module is also widely applied to various electronic products. The thickness of the current electronic product is thinner and thinner, the screen occupation ratio is higher and higher, and the pixel is higher and higher, so that the requirements for smaller and thinner camera modules are provided. Especially, full screen electronic products have become more and more popular, and to comply with the development trend of full screens, the size requirement of camera modules is smaller and smaller, so that a larger space is reserved for the screen to realize a higher screen occupation ratio.

As shown in fig. 1 and 2, a camera module includes a circuit board 11, a chip 12, a bracket 13, a lens assembly 14, and a filter 15, wherein the chip 12 and the bracket 13 are disposed on the circuit board 11, the lens assembly 14 is mounted on the bracket 13, and the filter 15 is disposed on the bracket 13 and located between the lens assembly 14 and the chip 12. The lens assembly 14 includes a lens group 142 and a lens barrel 144, the lens group 142 is disposed in the lens barrel 144, and a petal structure 146 is disposed on a top of the lens barrel 144. The radial dimension D1 of the top structure of this camera module is great, need occupy great screen space when installing in electronic product, has influenced the screen greatly and has accounted for the ratio.

Disclosure of Invention

The invention aims to provide a camera module and an electronic product which are small in size and capable of improving screen occupation ratio.

The embodiment of the invention provides a camera module, which comprises a circuit board, an imaging element, a support, an optical filter and a lens assembly, wherein the support is arranged on the circuit board, the imaging element is arranged in an accommodating cavity formed by the support and is electrically connected with the circuit board, the optical filter is arranged in the support, the imaging element and the optical filter are positioned on an optical axis of the lens assembly, the optical filter is positioned between the imaging element and the lens assembly, and the lens assembly is arranged on the support.

In one embodiment, the metal frame of the lens barrel is located at the top of the plastic table.

In one embodiment, the lens barrel is connected with the bracket through the plastic table; and part of lenses of the lens group are fixed in the plastic table, and part of lenses are fixed in the metal frame.

In one embodiment, a petal structure is arranged on the outer side wall of the lens barrel, and the petal structure is located in the middle of the lens barrel in the optical axis direction.

In one embodiment, the petal structures are arranged on the outer side wall of the plastic table.

In one embodiment, one end of the metal frame is embedded in the plastic table.

In one embodiment, the radial dimension of the end of the metal frame far away from the plastic table is smaller than the radial dimension of the end connected to the plastic table.

In one embodiment, the metal frame and the plastic table are combined in an integrated forming mode.

In one embodiment, the inner wall of the bracket is provided with a fixing portion protruding inwards, and the optical filter is fixed on the fixing portion.

The invention also provides an electronic product comprising the camera module.

In this camera module and electronic product, because the lens cone includes plastic platform and metal frame, the metal frame has the condition of less thickness still to have higher intensity, consequently can reduce the size of whole lens cone, reduces the camera module and at radial size D2, realizes the miniaturization of camera module, does benefit to the screen that improves electronic product and accounts for than.

Drawings

Fig. 1 is a schematic structural diagram of a camera module.

Fig. 2 is a schematic structural diagram of a lens assembly of the camera module shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of a camera module according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a lens assembly of the camera module shown in fig. 3.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Fig. 3 is a schematic cross-sectional structure view of a camera module according to an embodiment of the invention, and fig. 4 is a schematic structural view of a lens assembly of the camera module shown in fig. 3. As shown in fig. 3 and 4, the camera module according to an embodiment of the present invention includes a circuit board 21, an imaging element 23, a holder 25, a filter 27, and a lens assembly 29. The bracket 25 is disposed on the circuit board 21, the imaging element 23 is disposed in the accommodating cavity 252 formed by the bracket 25, the imaging element 23 is electrically connected to the circuit board 21, the optical filter 27 is disposed in the bracket 25, the imaging element 23 and the optical filter 27 are located on the optical axis of the lens assembly 29, the optical filter 27 is located between the imaging element 23 and the lens assembly 29, and the lens assembly 29 is mounted on the bracket 25. The lens assembly 29 includes a lens barrel 292 and a lens group 294, and the lens group 294 is disposed in the lens barrel 292. The lens barrel 292 includes a plastic stage 296 and a metal frame 297, and the metal frame 297 is combined with the plastic stage 296. Specifically, the plastic table 296 and the metal frame 297 may be integrally formed by injection molding (insert molding), so that the metal frame 297 is embedded in the plastic table 296. It is understood that the plastic platform 296 and the metal frame 297 may be formed as a single-piece structure by die-casting or may be connected by fasteners such as screws, and the specific connection manner between the plastic platform 296 and the metal frame 297 is not limited herein.

In the camera module, the lens barrel 292 comprises the plastic table 296 and the metal frame 297, and the metal frame 297 still has higher strength under the condition that the thickness of the metal frame 297 is smaller, so that the size of the whole lens barrel 292 can be reduced, the radial size D2 of the camera module is reduced, the miniaturization of the camera module is realized, and the improvement of the screen occupation ratio of an electronic product is facilitated.

In this embodiment, the imaging element 23 may be a CMOS (Complementary Metal oxide semiconductor) image sensor or a CCD (Charge-coupled Device) image sensor. The imaging element 23 is electrically connected to the circuit board 21 through the lead 31, so that the image information sensed by the imaging element 23 is transmitted to the circuit board 21 to form an image. Specifically, the circuit board 21 is provided with a pad, and the imaging element 23 can be electrically connected to the circuit board 21 by gold wire bonding. Specifically, the imaging element 23 is provided on the wiring board 21; more specifically, the imaging element 23 may be attached to the wiring board 21 by glue.

In this embodiment, the inner wall of the bracket 25 is provided with a fixing portion 253 protruding inward, and the optical filter 27 is fixed to the fixing portion 253. Specifically, in the present embodiment, the filter 27 is fixed below the fixing portion 253. It is understood that the filter 27 may be fixed above the fixing portion 253. In particular, the filter 27 may be glued inside the support 25.

The inner wall of the bracket 25 is also provided with internal threads.

In this embodiment, the outer wall of the lens barrel 292 is provided with an external thread, and the external thread of the lens barrel 292 is matched with the internal thread of the bracket 25. The top of the frame 25 may also be provided with an adhesive 33 between the frame 25 and the barrel 292 to secure the lens assembly 29 to the frame 25. During installation, the position of the lens assembly 29 is adjusted through threads, and after the position is adjusted to the optimal height position, the lens assembly is fixed through the adhesive 33. It is understood that in other embodiments, the holder 25 and the lens barrel 292 may be combined by integral molding.

In this embodiment, the metal frame 297 of the lens barrel 292 is located on top of the plastic table 296, and the lens barrel 292 is connected to the frame 25 through the plastic table 296. Because the metal frame 297 can still maintain good structural strength when being thin (usually about 0.1 mm), the top of the lens barrel 292 has a small radial dimension, so that the top of the whole camera module on the screen side of the electronic product has a small radial dimension, and the screen occupation ratio is improved. Specifically, the metal frame 297 may be a steel sheet.

In this embodiment, one end of the metal frame 297 is embedded in the plastic table 296. Specifically, the metal shelf 297 has a smaller radial dimension at the end remote from the plastic table 296 than at the end connected to the plastic table 296.

In this embodiment, some of the lenses of the lens group 294 are fixed in the plastic stage 296, and some of the lenses are fixed in the metal frame 297.

In this embodiment, the outer sidewall of the lens barrel 292 is provided with a petal structure 299, and the petal structure 299 is located in the middle of the lens barrel 292 in the optical axis direction. The petal design 299 is used to facilitate the user in rotating the lens assembly 29 when focusing. The petal structure 299 is a convex block protruding outwards, the radial size of the lens cone 292 can be increased, the radial size of the top of the lens assembly 29 can be prevented from being too large by arranging the convex block in the middle of the lens cone 292, the radial size of the top of the whole camera module on one side of a screen of an electronic product is small, and the screen occupation ratio is improved. Specifically, the petal structures 299 are arranged on the outer side wall of the plastic table 296; more specifically, a petal design 299 is provided on top of the outer sidewall of the plastic table 296.

The invention also provides an electronic product comprising the camera module.

In the electronic product, the lens barrel 292 of the camera module comprises the plastic platform 296 and the metal frame 297, and the metal frame 297 still has higher strength under the condition that the thickness is smaller, so that the size of the whole lens barrel 292 can be reduced, the radial size D2 of the camera module is reduced, the miniaturization of the camera module is realized, and the improvement of the screen occupation ratio of the electronic product is facilitated.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The camera module is characterized by comprising a circuit board (21), an imaging element (23), a support (25), a light filter (27) and a lens assembly (29), wherein the support (25) is arranged on the circuit board (21), the imaging element (23) is arranged in a containing cavity (252) formed by the support (25), the imaging element (23) is electrically connected with the circuit board (21), the light filter (27) is arranged in the support (25), the imaging element (23) and the light filter (27) are positioned on an optical axis of the lens assembly (29), the light filter (27) is positioned between the imaging element (23) and the lens assembly (29), the lens assembly (29) is arranged on the support (25), wherein the lens assembly (29) comprises a lens barrel (292) and a lens group (294), the lens group (294) is arranged in the lens barrel (292), the lens barrel (292) comprises a plastic table (296) and a metal frame (297), and the metal frame (297) is combined with the plastic table (296).

2. The camera module of claim 1, wherein the metal shelf (297) of the lens barrel (292) is located on top of the plastic stage (296).

3. The camera module according to claim 1, wherein the lens barrel (292) is connected to the holder (25) through the plastic table (296); part of the lenses of the lens group (294) are fixed in the plastic table (296) and part of the lenses are fixed in the metal frame (297).

4. The camera module according to claim 1, wherein petal structures (299) are provided on an outer side wall of the lens barrel (292), and the petal structures (299) are located at a middle portion of the lens barrel (292) in an optical axis direction.

5. The camera module of claim 4, wherein said petal structures (299) are disposed on an outer sidewall of said plastic table (296).

6. The camera module of claim 5, wherein one end of the metal frame (297) is embedded in the plastic table (296).

7. The camera module of claim 6, wherein an end of the metal frame (297) remote from the plastic table (296) has a smaller radial dimension than an end connected to the plastic table (296).

8. The camera module of claim 1, wherein the metal frame (297) and the plastic stage (296) are joined by integral molding.

9. The camera module according to claim 1, wherein the holder (25) is provided on an inner wall thereof with a fixing portion (253) projecting inward, and the filter (27) is fixed to the fixing portion (253).

10. An electronic product, characterized by comprising the camera module according to any one of claims 1 to 9.