Camera module

Abstract

The invention discloses a camera module, which comprises a lens, a substrate fixedly matched with the lens, an anti-dazzling screen arranged between the lens and the substrate, and an image sensor fixedly arranged on the substrate, wherein the lens comprises a lens cone, and a lens arranged inside the lens cone; the lens comprises an optical axis; the substrate comprises opposite first surface and second surfaces, and a first through hole penetrating through the first surface and the second surface; the anti-dazzling screen comprises opposite third surface and fourth surface, and a second through hole penetrating through the third surface and the fourth surface; the substrate is arranged between the anti-dazzling screen and the image sensor; an effective photosensitive area of the image sensor is arranged inside the second through hole, and the boundary of the second through hole along a positive projection of an optical axis is arranged inside the boundary of the first through along the positive projection of the optical axis. The camera module provided by the invention can reduce rays projected to the effective photosensitive area after being reflected through the inner wall of the first through hole and the inner wall of the second through hole. Thus, reflected light patterns in the imaged image are reduced.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a camera module. Background technique [0002] The camera module includes a lens barrel, a lens group arranged in the lens barrel, a substrate and an image sensor arranged on the substrate. The substrate is provided with through holes penetrating through the upper and lower surfaces. The through hole allows light to pass through to the image sensor for imaging. [0003] In a traditional camera module, some light is easily reflected by the inner wall of the through hole to the effective photosensitive area of ​​the image sensor, thereby causing severe reflection streaks in the imaged image. Contents of the invention [0004] In view of this, it is necessary to provide a camera module capable of reducing reflection light streaks. [0005] A camera module includes a lens, a substrate fixedly matched with the lens, a light-shielding sheet arranged between the lens and th...

AI Technical Summary

Problems solved by technology

[0003] In a traditional camera module, some light is easily reflected by the inner wall of the through hole to the effective photosensitive area of ​​the image sensor, resulting in serious reflected light streaks in the imaged image

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