Display technique producing an image corresponding to the viewing angle byusing a directional screen

By using a directional screen in which the displayed image varies according to the viewing angle, a display technique for bidirectional video communic ation is realized in which a natural feeling of conversation at the same lo cation can be obtained. The technology used to control the visual area of t he displayed image is different from that for a large screen and that for a high-precision display, and is a new approach to introduce natural feeling into the displayed image. This paper describes the characteristics of the directional diffusion plate used as a basis, of multiple image separation o n the directional screen, of the focusing lens configuration used for impro ved separation, of methods for correcting distortion of the projected image , and of a multidirectional picture shooting method. Based on these results , a visual area-controlled display system with a size of 50 inches has been designed and fabricated. It is confirmed that visual area control in two o r three directions is possible with one screen and that image interaction w ith a feeling of presence can be realized with a three-screen configuration . (C) 1999 Scripta Technica.