4 January 2008 Virtual display: unidirectional diffusing image screen for extension of screen region using mirror image
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Abstract
A liquid crystal display (LCD) recently comes into common use. It is possible for this display unit to provide the same size of displaying area as the image screen on the panel. Thus the conventional display can show only one screen, but it is impossible to enlarge the size of a screen, for example twice. To enlarge the display area, the authors have developed an enlarging method of display area using a mirror. Our extension method enables the observers to show the virtual image plane and to enlarge a screen area twice. In the developed display unit, we made use of an image separating technique using polarized glasses, a parallax barrier or a lenticular lens screen for 3D imaging. However, each technique has a defect at viewing an image. In the glasses method, an observer needs to wear the special glasses for a viewing screen. The slit or lens sheet reduces the resolution in half. To solve these problems, we develop a new virtual display system using a unidirectional diffusing image screen.
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Kunio Sakamoto, Mariko Adachi, "Virtual display: unidirectional diffusing image screen for extension of screen region using mirror image", Proc. SPIE 6832, Holography and Diffractive Optics III, 68321O (4 January 2008); doi: 10.1117/12.754943; https://doi.org/10.1117/12.754943
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