Camera module, electronic device, optical element, and method for preparing camera module

Abstract

The application discloses a camera module, electronic equipment, optical elements and a method for preparing the camera module. The camera module includes a lens group, an optical element, an image sensor and a processor. In the conversion plane, the image sensor receives the image light after the diffraction is reduced by the optical element and converts the image light into a first image signal, and the first image signal is sent to the convolution filter in the processor for deconvolution filter processing to Blur is compensated to obtain a second image signal. The diffraction of light passing through the camera module is reduced by arranging optical elements in the Fourier transform plane of the two lenses. The image light after the reduced diffraction is received by the image sensor and converted into the first image signal by the image sensor, which facilitates the deconvolution filtering process on the first image signal to further compensate for the blur to obtain the second image signal, so that the camera module can Reduces the diffraction of light passing through its interior.

Description

technical field [0001] The present application relates to the technical field of electronic devices, and in particular, to a camera module, an electronic device, and a method for preparing an optical element and a camera module. Background technique [0002] As people have higher and higher requirements for the aesthetics of electronic equipment, the camera module is placed under the screen of the electronic equipment, and the light received or emitted by the camera module passes through the screen. A plurality of pixel units constitute a periodic pixel diffraction structure, so the incident light will have a diffraction effect, which will eventually lead to the degradation of the projection or imaging quality of the camera module disposed on the back of the screen. SUMMARY OF THE INVENTION [0003] The present application provides a camera module, an electronic device, an optical element, and a method for preparing the camera module. Considering the optimization of the st...

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Problems solved by technology

[0002] As people have higher and higher aesthetic requirements for electronic equipment, the camera module is placed under the screen of the electronic device, and the light received or emitted by the camera module passes through the screen. Unit, multiple pixel units constitute a periodic pixel diffraction structure, so it will have a diffraction effect on the incident light, which will eventually lead to a decrease in the projection or imaging quality of the camera module set on the back of the screen

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