A method for weakening moiré fringes in a naked-eye 3D directional backlight system

A directional backlight and moiré fringe technology, applied in optics, optical components, instruments, etc., can solve problems such as unfavorable naked-eye 3D commercial applications, achieve the effect of weakening moiré fringes and improving quality
CN106773082BActive Publication Date: 2019-02-05SYSU CMU SHUNDE INT JOINT RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SYSU CMU SHUNDE INT JOINT RES INST
Publication Date
2019-02-05

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Abstract

The invention provides a method for decreasing Moire fringes in a glasses-free 3D directional backlight system. The method comprises: calculating Moire fringes generated on an LCD (liquid crystal display) screen when a Fresnel lens set and the LCD screen are under different angles, distances and cycle ratios, and drawing a graph; finding Fresnel lens set and LCD screen distance and angle optimal values from a visual contrast distribution graph for Moire fringes generated by Fresnel lens set and the LCD screen periodical information in the glasses-free 3D directional backlight system; constructing the 3D directional backlight system according to the found Fresnel lens set and LCD screen distance and angle optimal values. The method can decease Moire fringes without affecting the visual enjoinment from the glasses-free 3D system, and the quality of visual sensory views can be improved greatly.
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Description

technical field

[0001] The invention relates to the field of naked-eye 3D display systems, and more particularly, relates to a method for weakening moiré fringes in a naked-eye 3D directional backlight system. Background technique

[0002] Moiré fringes are usually produced when two or more periodic structures are superimposed, which is an optical geometric effect of periodic structures. The moire effect will cause disturbing stripes to appear on the original image, interfere with the display of the image, and cause the image to be distorted in graphics and color.

[0003] In the naked-eye 3D system, the main components of the model include backlight, Fresnel lens group, LCD liquid crystal screen, and viewpoint. Different pictures projected by different backlight combinations reach different positions in the viewing area to achieve the naked-eye 3D effect. Among them, the superposition of the approximately periodically arranged Fresnel lens group and the LCD screen with per...

Claims

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