Parallax barrier for autostereoscopic display, autostereoscopic display, and method for designing parallax barrier for autostereoscopic display

摘要

Moiré generated in an autostereoscopic display utilizing a parallax barrier method is cancelled. The interval between visible light transmitting sections that are abutting in the horizontal direction of a parallax barrier is determined using: the average number of subpixels constituting one pixel for three-dimensional display in one row in the horizontal direction; the width of a subpixel, which forms a display; the distance from a predetermined diagonal moiré canceling position to the parallax barrier; the number of viewpoints of a video image used for displaying an autostereoscopic video image; and the distance (Z) from the image display surface of the display to the parallax barrier.

主权项

1. A parallax barrier for an autostereoscopic display wherein
the parallax barrier for an autostereoscopic display is provided with a distance Z from an image display surface of a display on which a plurality of pixels each having horizontally arranged three subpixels displaying R, G, and B are arranged in horizontal and vertical directions, values relating to sizes and arrangements of a plurality of visible light transmitting sections and a value of the distance Z are calculated and designed based on a predetermined designing condition, and in autostereoscopic viewing under a condition in which: an average number of subpixels in a horizontal direction constituting pixels for three-dimensional display for one viewpoint of an autostereoscopic video image created from video images of a plurality of viewpoints is defined as α; a width of subpixels constituting the display is defined as Ph; a distance between centers of pixels for three-dimensional display that display video images of neighboring viewpoints is defined as αPh; a distance between pupils of left and right eyes of a subject person of video image presentation is defined as W; and a number of viewpoints of the video images for creating the autostereoscopic video image is defined as N, and in a design condition in which: a most appropriate three-dimensionally viewable position is preset and a distance from such a position to the parallax barrier is defined as L1; and a diagonal moire cancelling position is preset and a distance from such a position to the parallax barrier is defined as L2, the parallax barrier is designed by determining a value of the distance Z from the image display surface of the display to the parallax barrier by a following function (1); and determining a value of an interval Hh between a plurality of horizontally abutting visible light transmitting sections constituting the parallax barrier by a following function (2):Z=α⁢⁢Ph×L⁢⁢1W(1)Hh=N×α⁢⁢Ph×L⁢⁢2Z+L⁢⁢2.(2)