Method for designing diffraction suppression optical component, display screen and under-screen camera apparatus

Abstract

A method for designing a phase-typed diffraction suppressing optical device () for a transparent display screen() is disclosed, which comprises: acquiring a light field complex amplitude distribution U(x,y,d)=A(x,y,d)exp(iφ(x,y,d)) on a plane with a distance d from the transparent display screen () after a plane wave is transmitted through the screen; and designing the diffraction suppressing optical device (), so that it has a transmittance function t(x,y)=exp(iφ(x,y)) and satisfies φ(x,y,d)+φ(x,y)=C, where C is a constant. A diffraction suppressing optical device () and an under-screen camera apparatus () comprising the same are disclosed. The phase-typed diffraction suppressing optical device () suppresses the diffraction effect in the under-screen camera apparatus () by providing phase modulation, thereby improving the quality of under-screen imaging.