23 February 2012 3D image quality of 200-inch glasses-free 3D display system
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We have proposed a glasses-free three-dimensional (3D) display for displaying 3D images on a large screen using multi-projectors and an optical screen consisting of a special diffuser film with a large condenser lens. To achieve high presence communication with natural large-screen 3D images, we numerically analyze the factors responsible for degrading image quality to increase the image size. A major factor that determines the 3D image quality is the arrangement of component units, such as the projector array and condenser lens, as well as the diffuser film characteristics. We design and fabricate a prototype 200-inch glasses-free 3D display system on the basis of the numerical results. We select a suitable diffuser film, and we combine it with an optimally designed condenser lens. We use 57 high-definition projector units to obtain viewing angles of 13.5°. The prototype system can display glasses-free 3D images of a life-size car using natural parallax images.
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M. Kawakita, S. Iwasawa, M. Sakai, Y. Haino, M. Sato, N. Inoue, "3D image quality of 200-inch glasses-free 3D display system", Proc. SPIE 8288, Stereoscopic Displays and Applications XXIII, 82880B (23 February 2012); doi: 10.1117/12.912274; https://doi.org/10.1117/12.912274

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