Under-Display Camera Optics for Wiring Diffraction Reduction
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Solution Overview
Problem
The quality of images captured by a camera placed behind a transparent display is degraded due to optical disturbances, primarily diffraction caused by the wiring layer of the display, for which there are no effective solutions.
Innovation Solution
An imaging device is designed with an optical element placed between the display and the camera, which filters light to reduce diffraction from the wiring layer, and an image correction circuit processes the image to improve sharpness and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera is placed behind a transparent display to increase display area, then the display area is increased, but image quality is degraded due to diffraction from the wiring layer
Solution Approach 1:
An optical element is introduced as an intermediary component between the display and the camera. This optical element specifically targets and reduces the diffraction effects caused by the wiring layer, allowing the camera to capture images through the transparent display without significant quality degradation while maintaining the increased display area benefit
2Ease of operation
If pictures are taken through the display, then the camera can be positioned behind the display, but diffraction artifacts appear on the captured images
Solution Approach 1:
The optical element is designed to convert the harmful diffraction effects into beneficial outcomes. By specifically targeting the diffraction patterns caused by the wiring layer, the optical element transforms these adverse optical effects into acceptable image quality, allowing the camera to function effectively behind the transparent display
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The optical element effectively reduces diffraction artifacts, and the image correction circuit enhances image quality, allowing for clearer images to be captured without the need for costly computational adjustments.
Implementation Method 1
The disturbance is mainly reflection at the display or diffraction due to wires of a wiring layer of the display. Particularly, the diffraction causes severe ugly artifact on the image captured by the camera
Implementation Method 2
an optical element between the display and the camera, wherein the optical element filters the light through the display and passes the filtered light to the camera, and the optical element reduces a diffraction due to the wiring layer
Data Source
AI summary
An imaging device according to the embodiments of the present disclosure has a display including a wiring layer; a camera located at a back side of the display, the camera including an optical lens and an imaging sensor to sense the light through the display to create an image; an optical element between the display and the camera, wherein the optical element filters the light through the display and passes the filtered light to the camera, and the optical element reduces a diffraction due to the wiring layer.