CN211744556U - Camera module and terminal adopting same - Google Patents

Abstract

The utility model provides a camera module, it includes the image sensor module, the image sensor module has a photosensitive area, photosensitive area has an at least little focus lens the surface of little focus lens has the filtering film layer. The utility model has the advantages that the light filtering film layer is directly arranged on the micro-focusing lens, and the light filter is not arranged between the lens component and the image sensor module, thereby greatly reducing the reflection of incident light, avoiding the formation of glare and greatly improving the imaging quality of the camera module; compared with the prior art, the camera module has the advantages that the filter is omitted, the height of the camera module can be reduced while the cost is reduced, and the thickness of the whole terminal is reduced.

Description

Camera module and terminal adopting same

Technical Field

The utility model relates to an electronic product field especially relates to a camera module and adoption the terminal of camera module.

Background

A camera module of a terminal such as a mobile phone generally includes a lens assembly, a filter and an image sensor module, wherein the filter is disposed between the lens assembly and the image sensor module. The lens assembly is used for receiving external light, and the external light enters the camera module through the lens assembly; the image sensor module is a core component of the camera module, can receive 380-680 nm visible light and performs photoelectric conversion, so that a color image is displayed; the optical filter is used for filtering stray light of external light, and the influence on picture color is avoided.

However, since the optical filter is made of a lens material, the optical filter, when combined with a lens assembly and a micro-lens (micro-lens) of an image sensor module, can form multiple reflections on incident light, inevitably introduces various glare lights, and results in poor quality of photographed images. For example, the imaging quality is degraded due to petal-shaped glare formed by multiple reflections of the external natural light from the lens assembly, the optical filter and the micro-lens of the image sensor module.

Therefore, how to avoid the glare generated by the camera module and improve the imaging quality of the camera module becomes a technical problem which needs to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a camera module and adoption are provided the terminal of camera module, its production that can avoid the glare improves the imaging quality of camera module, and can reduce the thickness of camera module, and then reduces the thickness at terminal.

In order to solve the problem, the utility model provides a camera module, it includes the image sensor module, the image sensor module has a photosensitive area, photosensitive area has an at least little focusing lens the surface of little focusing lens has the filtering film layer.

Furthermore, the light filtering film layer at least comprises an infrared light filtering film layer.

Furthermore, the light filtering film layer also comprises a visible light antireflection film layer.

Further, the light filtering film layer is arranged on the surface of the micro focusing lens facing the outside of the camera module.

Further, the filtering film layer is arranged on the surface of the micro focusing lens facing the inside of the camera module.

Further, the photosensitive area is provided with a plurality of micro focusing lenses, and the micro focusing lens array is arranged to form a micro lens array.

Further, the image sensor module further comprises a pixel array, the pixel array is arranged in the photosensitive area, and the micro lens array is arranged above the pixel array.

Further, the camera module further comprises a circuit board, and the image sensor module is arranged on the circuit board.

Further, the camera module further comprises a lens assembly, and the lens assembly is arranged above the image sensor module.

Further, the camera module further comprises a focusing motor, and the focusing motor is connected with the lens assembly and used for driving the lens assembly to move.

The invention also provides a terminal which adopts the camera module.

The utility model has the advantages that the light filtering film layer is directly arranged on the micro-focusing lens, and the light filter is not arranged between the lens component and the image sensor module, thereby greatly reducing the reflection of incident light, avoiding the formation of glare and greatly improving the imaging quality of the camera module; compared with the prior art, the camera module has the advantages that the filter is omitted, the height of the camera module can be reduced while the cost is reduced, and the thickness of the whole terminal is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a specific embodiment of the camera module according to the present invention;

fig. 2 is a schematic cross-sectional view of an embodiment of an image sensor module of the camera module of the present invention;

fig. 3 is a schematic structural diagram of another embodiment of the camera module according to the present invention.

Detailed Description

The following description is made in detail in conjunction with the accompanying drawings, which illustrate the camera module and the terminal of the camera module according to the present invention.

Fig. 1 is a schematic structural diagram of an embodiment of the camera module of the present invention, and fig. 2 is a schematic cross-sectional diagram of an embodiment of theimage sensor module 10 of the camera module of the present invention. Referring to fig. 1 and 2, the camera module 1 includes animage sensor module 10.

Theimage sensor module 10 has a photosensitive area a, and light rays outside the camera module 1 enter the camera module 1 and are received by the photosensitive area a. Wherein, the photosensitive area A is provided with at least one micro focusinglens 11A. In the present embodiment, the photosensitive area a has a plurality ofmicro-focusing lenses 11A, and the micro-focusing lens array is arranged to form amicro-lens array 11. Only fourmicro focus lenses 11A are schematically shown in fig. 2. Light outside the camera module 1 is focused by themicrolens array 11 and then enters theimage sensor module 10. Themicro lens array 11 is formed by arrangingmicro focusing lenses 11A in an array manner, and has better functions of light condensation, collimation, shunting, imaging and the like. In addition, the micro focusinglens 11A has a high light transmittance, thereby being beneficial to improving the optical performance and yield of theimage sensor module 10.

The surface of the micro focusinglens 11A has afilter film layer 12. Thefilter film layer 12 may be directly formed on the surface of the micro focusinglens 11A through a coating process. In the present embodiment, thefilter layer 12 is formed on a surface of themicro focus lens 11A facing the outside of the camera module 1, that is, an upper surface of themicro focus lens 11A. In another embodiment of the present invention, referring to fig. 3, the lightfiltering film layer 12 is formed on a surface of the micro focusinglens 11A facing the inside of the camera module 1, i.e. a lower surface of themicro focusing lens 11A.

The lightfiltering film layer 12 is used for filtering light entering the image sensor module, and avoiding stray light of external light from influencing the color of an imaging picture of the camera module. For example, thefilter film layer 12 blocks the passage of invisible light and allows visible light.

In this embodiment, thefiltering film layer 12 is mainly used for filtering infrared light, thefiltering film layer 12 at least includes an infraredfiltering film layer 121, and after the external light passes through thefiltering film layer 12, thefiltering film layer 12 selectively blocks or absorbs part or all of the infrared band radiation, so that the infrared band radiation entering the inside of theimage sensor module 10 is greatly reduced, and the generation of stray light is avoided. In other embodiments of the present invention, thefilter film layer 12 can be used to filter all invisible light except visible light, so as to prevent the filter film layer from affecting the image of the camera module.

Further, in this embodiment, theoptical filter layer 12 further includes a visible lightantireflection film layer 122, and the visible lightantireflection film layer 122 can reduce reflection of visible light on the micro focusinglens 11A, and improve light transmittance of visible light.

Thesensor chip 10 further comprises apixel array 13. Themicrolens array 11 is disposed above thepixel array 13. The visible light filtered and focused by themicrolens array 11 is received by thepixel array 13 and forms an electrical signal output. Thepixel array 13 is composed of a plurality of pixels, and the pixels may be composed of a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B), or may be composed of a white sub-pixel (W) combined with a filter.

Further, referring to fig. 1, the camera module further includes acircuit board 20, alens assembly 30 and a focusingmotor 40.

Thecircuit board 20 may include a multilayer Printed Circuit Board (PCB) or a flexible printed circuit board (FPC). Theimage sensor module 10 is soldered on thecircuit board 11 and electrically connected to thecircuit board 11. The electrical signal generated by theimage sensor 10 is transmitted to the controller of the terminal through thecircuit board 11.

Thelens assembly 30 is disposed over theimage sensor 10. External light enters the camera module 1 through thelens assembly 30 and is incident on the microlens array of the photosensitive area a.

The focusingmotor 40 is connected to thelens assembly 30 for driving thelens assembly 30 to move. The focusingmotor 40 includes, but is not limited to, a micro focusing motor, or an annular focusing motor. The focus motor can drive thelens assembly 30 to move for focusing under the control of the controller.

The utility model discloses camera module directly sets up the light filtering film layer on little focusing lens, no longer sets up the light filter between camera lens subassembly and image sensor module, has greatly reduced the reflection of incident light, avoids the formation of glare, has greatly improved the imaging quality of camera module; compared with the prior art, the camera module has the advantages that the filter is omitted, the height of the camera module can be reduced while the cost is reduced, and the thickness of the whole terminal is reduced.

The utility model also provides a terminal, the terminal adopts foretell camera module as image device. The structure of the camera module can refer to the above specific embodiments, and is not described herein again. The camera module is arranged in the terminal, so that the terminal has the same beneficial effect as the camera module.

The terminal may include at least one of a cell phone, a tablet, an e-book reader, an MP4 player, a digital camera, a laptop portable computer, a smart tv, and a wearable device.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A camera module is characterized by comprising an image sensor module, wherein the image sensor module is provided with a photosensitive area, the photosensitive area is provided with at least one micro-focusing lens, and the surface of the micro-focusing lens is provided with a light filtering film layer;

the camera module further comprises a lens assembly and a focusing motor, wherein the focusing motor is connected with the lens assembly and used for driving the lens assembly to move.

2. The camera module of claim 1, wherein the filter layer comprises at least one infrared filter layer.

3. The camera module of claim 2, wherein the filter layer further comprises a visible light antireflection layer.

4. The camera module of claim 1, wherein the filter film layer is disposed on a surface of the micro-focusing lens facing an exterior or interior of the camera module.

5. The camera module of claim 1, wherein the photosensitive area has a plurality of micro-focusing lenses, and the array of micro-focusing lenses is arranged to form a micro-lens array.

6. The camera module of claim 5, wherein the image sensor module further comprises a pixel array disposed on the photosensitive region, the microlens array disposed over the pixel array.

7. The camera module of claim 1, further comprising a circuit board on which the image sensor module is disposed.

8. The camera module of claim 1, wherein the lens assembly is disposed above the image sensor module.

9. A terminal, characterized in that, the camera module of any claim 1-8 is adopted.

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