CN110650282A

CN110650282A - Camera module and electronic equipment

Info

Publication number: CN110650282A
Application number: CN201911049033.4A
Authority: CN
Inventors: 高峰
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-01-03
Anticipated expiration: 2039-10-31
Also published as: WO2021083233A1; CN110650282B

Abstract

The invention discloses a camera module and electronic equipment, the camera module comprises a substrate (100), a photosensitive chip (200), a lens bracket (300) and a lens (400), the lens bracket (300) and the photosensitive chip (200) are arranged on the substrate (100), the photosensitive chip (200) is arranged in the area surrounded by the lens bracket (300), the lens (400) is arranged on the lens bracket (300), the lens (400) comprises a lens barrel (410), a lens group (420) and a blue spectrum refraction optical element (430) which are arranged in the lens barrel (410), the lens group (420) and the photosensitive chip (200) are oppositely arranged, the blue spectrum refraction optical element (430) is arranged in the lens barrel (410), the blue spectrum refraction optical element (430) and the photosensitive chip (200) are oppositely arranged, and an infrared light cut-off film (440) is arranged on the surface of the blue spectrum refraction optical element (430). The scheme can solve the problem that the imaging quality of the camera module is poor due to imaging chromatic aberration and color cast in the imaging process.

Description

Camera module and electronic equipment

Technical Field

The invention relates to the technical field of communication equipment, in particular to a camera module and electronic equipment.

Background

As user demands increase, the functions of electronic devices (e.g., mobile phones, tablet computers) continue to be optimized. As a basic function of the electronic apparatus, a camera function is realized by a camera module of the electronic apparatus. The shooting performance of the camera module directly determines the image quality.

The camera module generally comprises a lens group, and the lens group is used for transmitting and refracting ambient light. The lens group of the current camera module generally comprises a plurality of lenses, and each lens group is used for imaging to achieve the purpose of eliminating chromatic aberration. Ambient light can't assemble into a bit effectively behind a plurality of lenses on the imaging surface to form a round blue halo at the edge of imaging surface, and then lead to the formation of image colour difference still to exist, finally lead to making a video recording the imaging quality of module still relatively poor.

Disclosure of Invention

The invention discloses a camera module, which aims to solve the problem of poor imaging quality caused by imaging chromatic aberration and color cast in the imaging process of the conventional camera module.

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a camera module, includes base plate, sensitization chip, lens holder and camera lens, the lens holder sets up on the base plate, the sensitization chip sets up on the base plate, just the sensitization chip sets up in the region that the lens holder centers on, the camera lens sets up on the lens holder, the camera lens includes the lens cone and sets up lens group in the lens cone, lens group with the sensitization chip sets up relatively, the camera lens still includes blue spectrum refraction optical element, blue spectrum refraction optical element sets up within the lens cone, blue spectrum refraction optical element with the sensitization chip sets up relatively, blue spectrum refraction optical element's surface is provided with the infrared light and ends the membrane.

An electronic device comprises the camera module.

The technical scheme adopted by the invention can achieve the following beneficial effects:

the camera module disclosed by the invention improves the structure of the camera module in the prior art, and the blue spectrum refraction optical element is arranged in the lens barrel of the lens, and has the characteristic of larger refraction to blue light, so that the dispersion of the blue light is larger, the blue halo is prevented from being generated at the edge of an image, and the problem of imaging chromatic aberration can be solved. Meanwhile, the infrared light cut-off film is arranged on the surface of the blue spectrum refraction optical element, so that infrared light can be filtered, the influence of the infrared light on photographing is avoided, and the color cast problem of an image can be prevented. Therefore, the shooting quality of the image can be improved by the camera module disclosed by the embodiment of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an exploded view of a camera module according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a lens of a camera module according to an embodiment of the present invention.

Description of reference numerals:

100-a substrate,

200-photosensitive chip,

300-a lens holder,

400-lens, 410-lens cone, 411-light inlet, 420-lens group, 421-first lens, 422-second lens, 423-third lens, 424-fourth lens, 430-blue spectrum refraction optical element, 440-infrared light cut-off film,

500-zoom motor,

600-optical filter,

700-lens protection film,

800-flexible circuit board,

810-electrical connector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1-2, an embodiment of the invention discloses a camera module, which can be applied to an electronic device and includes a substrate 100, a photo sensor chip 200, a lens holder 300, and a lens 400.

The substrate 100 is a base member of the camera module, and other components of the camera module may be directly or indirectly mounted on the substrate 100. The lens holder 300 is disposed on the substrate 100, and the lens holder 300 may be fixed to the substrate 100 by means of adhesion in a normal case. The lens 400 may be mounted on the lens holder 300, and similarly, the lens 400 may be fixed on the lens holder 300 by means of adhesion.

Sensitization chip 200 is the sensitization part of the module of making a video recording, and sensitization chip 200 can the induction light and then realizes finding a view and shoot. The photosensitive chip 200 is disposed on the substrate 100, and the photosensitive chip 200 is disposed in an area surrounded by the lens holder 300. The photosensitive chip 200 is disposed opposite to the lens 400, so that the photosensitive chip 200 can perform a photosensitive framing through the lens 400. The lens holder 300 can not only provide a mounting position for the lens 400, but also protect the sensor chip 200 and prevent the sensor chip 200 from being interfered by stray light from other directions, so that the sensor chip 200 can only sense the light passing through the lens 400.

In an embodiment of the present invention, the lens 400 may include a lens barrel 410 and a lens group 420, the lens group 420 is disposed in the lens barrel 410, and specifically, the lens barrel 410 is connected to the lens holder 300, so as to implement the installation of the whole lens 400 on the lens holder 300. The lens group 420 is disposed opposite to the photosensitive chip 200, and light entering the lens barrel 410 can be sensed by the photosensitive chip 200 after passing through the lens group 420. In one embodiment, the lens group 420 may be mounted in the lens barrel 410 by means of bonding or snap-fitting.

The lens 400 further includes a blue spectrum refractive optical element 430, the blue spectrum refractive optical element 430 is disposed within the lens barrel 410, and the blue spectrum refractive optical element 430 is disposed opposite to the photosensitive chip 200. The surface of the blue spectrum refractive optical element 430 is provided with an infrared light cut film 440. In a specific shooting process, the infrared light can be sensed by the photosensitive chip 200, and then the interference can be caused to the shot image, and finally the color cast phenomenon is caused.

The camera module disclosed by the embodiment of the invention improves the structure of the camera module in the prior art, and the blue spectrum refractive optical element 430 is arranged in the lens barrel 410 of the lens 400, and the blue spectrum refractive optical element 430 has the characteristic of larger refraction to blue light, so that the dispersion of the blue light is larger, the blue halo is prevented from being generated at the edge of an image, and the problem of imaging chromatic aberration can be solved. Meanwhile, the infrared light cut-off film 440 is arranged on the surface of the blue spectrum refraction optical element 430, so that infrared light can be filtered, the influence of the infrared light on photographing is avoided, and the color cast problem of an image can be prevented. Therefore, the shooting quality of the image can be improved by the camera module disclosed by the embodiment of the invention.

Specifically, the infrared light cut-off film 440 may be a plated film layer or a film-coated layer, and in order to improve the assembling quality of the infrared light cut-off film 440 and the blue spectrum refractive optical element 430, in a preferred embodiment, the infrared light cut-off film 440 may be a plated film layer.

The infrared light cut-off film 440 may be disposed on a side of the blue spectrum refractive optical element 430 facing away from the photosensitive chip 200, that is, on a light entrance side of the blue spectrum refractive optical element 430, and of course, the infrared light cut-off film 440 may also be disposed on a side of the blue spectrum refractive optical element 430 facing the photosensitive chip 200, that is, on a light exit side of the blue spectrum refractive optical element 430. In a more preferred aspect, the infrared light cut-off film 440 is disposed on the incoming light side of the blue-spectrum refractive optical element 430, so that the infrared light can be cut off before entering the blue-spectrum refractive optical element 430.

Of course, in order to improve the cut-off effect, in a more preferable aspect, the surfaces of the infrared light cut-off film 440 facing away from the photosensitive chip 200 and the photosensitive chip 200 may be provided with the infrared light cut-off film 440.

In the embodiment of the present invention, the lens group 420 generally includes at least two lenses, and the blue spectrum refractive optical element 430 is disposed between two adjacent lenses, in which case, the blue spectrum refractive optical element 430 can be installed in the lens barrel 410 along with the lens group 420, thereby facilitating the installation.

The lens barrel 410 includes a light inlet 411, and light enters the lens barrel 410 through the light inlet 411, then passes through the lens group 420, the blue spectrum refractive optical element 430 and the infrared light cut-off film 440, and is finally sensed by the light sensing chip 200. The at least two lenses may include a first lens 421, a second lens 422, a third lens 423 and a fourth lens 424, the first lens 421, the second lens 422, the third lens 423 and the fourth lens 424 are sequentially stacked between the light inlet 411 and the photosensitive chip 200, and the blue spectrum refractive optical element 430 may be disposed between the first lens 421 and the second lens 422. In this case, the blue spectrum refractive optical element 430 can be protected by the first lens 421 and the second lens 422, and meanwhile, since the first lens 421 and the second lens 422 are closer to the light inlet 411, the blue light in the light can be adjusted earlier, which is undoubtedly more beneficial to improving the image quality.

Referring again to fig. 1 and 2, in one embodiment, the first lens 421 can be a convex lens. The second lens sheet 422 may be a concave lens sheet, the opposing surfaces of the first lens sheet 421 and the second lens sheet 422 are both flat, and the blue spectral refractive optical element 430 is attached to and stacked on both the first lens sheet 421 and the second lens sheet 422. In this case, the blue spectrum refractive optical element 430 is attached to the plane of the first lens 421 or the second lens 422, which can certainly improve the assembling effect.

Specifically, the blue spectrum refractive optical element 430 may be disposed on the surface of the lens by means of adhesion, for example, the blue spectrum refractive optical element 430 is fixed on the surface of the first lens 421 or the second lens 422 by means of adhesion. In this case, the blue-spectrum refractive optical element 430 can be mounted simultaneously during the mounting of the lens.

Of course, the blue spectrum refraction optical element 430 may also be clamped and fixed between two adjacent lenses, and in the process of installing the lenses into the lens barrel 410, the blue spectrum refraction optical element 430 may be installed in a manner of clamping two adjacent lenses, and this installation manner facilitates the detachment and replacement of the blue spectrum refraction optical element 430.

In order to achieve a better shooting effect, in a preferred embodiment, the camera module disclosed in the embodiment of the present invention may further include a zoom motor 500, the zoom motor 500 may be disposed on the lens holder 300, the lens barrel 410 may be connected to the zoom motor 500, and the zoom motor 500 drives the lens barrel 410 to move away from or close to the photosensitive chip 200, in this case, the zoom motor 500 drives the lens barrel 410 to move, so as to further drive the entire lens 400 to move, and finally achieve a zoom purpose.

In the embodiment of the present invention, the substrate 100 may be a hard circuit board, in which case the substrate 100 not only can provide a mounting position for the photosensitive chip 200, but also can supply power to the photosensitive chip 200 on the premise that the photosensitive chip 200 is electrically connected to the substrate 100. Referring to fig. 1 again, on the premise that the substrate 100 is a hard circuit board, the substrate 100 may be connected with a flexible circuit board 800, one end of the flexible circuit board 800 is electrically connected with the substrate 100, the other end of the flexible circuit board 800 is connected with an electrical connector 810, and the electrical connector 810 may be electrically connected with a motherboard of an electronic device. The flexible circuit board 800 has good deformability, and thus can be well adapted to an electrical connection environment in the electronic device through its own deformation. In a more preferred embodiment, the electrical connector 810 may be a board-to-board electrical connector.

In order to further improve the shooting quality and avoid the imaging from being interfered by more, the lens holder 300 disclosed in the embodiment of the present invention may be provided with the optical filter 600, the optical filter 600 is disposed between the lens group 420 and the photosensitive chip 200, and the optical filter 600 may filter light that is not needed in the shooting process of the client.

In order to avoid the lens 400 from being damaged or worn, in a preferred embodiment, the camera module disclosed in the embodiment of the invention may further include a lens protection film 700, the lens protection film 700 covers the lens 400, and the lens protection film 700 can protect the lens 400. Specifically, the lens protection film 700 may be attached to the lens 400. Specifically, the lens protection film 700 may be a tempered film.

Based on the camera module disclosed by the embodiment of the invention, the embodiment of the invention discloses electronic equipment, and the disclosed electronic equipment comprises the camera module disclosed by the embodiment.

The electronic device disclosed in the embodiment of the present invention may be an electronic device such as a mobile phone, a tablet computer, an electronic book reader, a game machine, a wearable device (e.g., a smart watch), and the specific type of the electronic device is not limited in the embodiment of the present invention.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The camera module is characterized by comprising a substrate (100), a photosensitive chip (200), a lens holder (300) and a lens (400), wherein the lens holder (300) is arranged on the substrate (100), the photosensitive chip (200) is arranged in the area surrounded by the lens holder (300), the lens (400) is arranged on the lens holder (300), the lens (400) comprises a lens barrel (410) and a lens group (420) arranged in the lens barrel (410), the lens group (420) is arranged opposite to the photosensitive chip (200), the lens (400) further comprises a blue spectrum refraction optical element (430), the blue spectrum refraction optical element (430) is arranged in the lens barrel (410), and the blue spectrum refraction optical element (430) is arranged opposite to the photosensitive chip (200), the surface of the blue spectrum refractive optical element (430) is provided with an infrared light cut film (440).

2. The camera module of claim 1, wherein the set of lenses (420) includes at least two lenses, the blue spectral refractive optical element (430) being disposed between two adjacent lenses.

3. The camera module according to claim 2, wherein the lens barrel (410) comprises a light inlet hole (411), the at least two lenses comprise a first lens (421), a second lens (422), a third lens (423) and a fourth lens (424), the first lens (421), the second lens (422), the third lens (423) and the fourth lens (424) are sequentially stacked between the light inlet hole (411) and the photo-sensitive chip (200), and the blue spectrum refractive optical element (430) is disposed between the first lens (421) and the second lens (422).

4. The camera module according to claim 3, wherein the first lens piece (421) is a convex lens piece, the second lens piece (422) is a concave lens piece, the opposite surfaces of the first lens piece (421) and the second lens piece (422) are both flat, and the blue spectrum refractive optical element (430) is attached and overlapped with the first lens piece (421) and the second lens piece (422).

5. The camera module of claim 2, wherein the blue-spectrum refractive optical element (430) is clamped between two adjacent lenses.

6. The camera module of claim 2, wherein the blue spectral refractive optical element (430) is affixed to a surface of the lens.

7. The camera module according to claim 1, further comprising a zoom motor (500), wherein the zoom motor (500) is disposed on the lens holder (300), the lens barrel (410) is connected to the zoom motor (500), and the zoom motor (500) drives the lens barrel (410) to move away from or close to the photo-sensing chip (200).

8. The camera module according to claim 1, wherein the lens holder (300) is provided with a filter (600), and the filter (600) is disposed between the lens group (420) and the photosensitive chip (200).

9. The camera module according to claim 1, further comprising a lens protection film (700), wherein the lens protection film (700) covers the lens (400).

10. An electronic device comprising the camera module of any one of claims 1-9.