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3 September 2015 Convertible 2D-3D display using an edge-lit light guide plate based on integral imaging
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A thin and lensless two-dimensional (2D) to three-dimensional (3D) convertible display based on integral imaging using an edge-lit light guide plate (LGP) is proposed with improved optical efficiency. The proposed system is composed of a general flat backlight and an edge-lit LGP which is commonly used in the backlight of LCD and a LC panel. The edge lit LGP is a waveguide (an acrylic sheet) that is drilled by laser to form a diffuser dot array at the bottom and edge illuminated with LEDs. Light from the LEDs is channeled through the waveguide to the opposite side except where it encounters the diffuser dots, which scatter light and cause bright spots to appear. A point light source array for 3D mode is created then. A general flat backlight behind the transparent LGP is turned on for 2D mode meanwhile edge-lit light is turned off. The 2D and the 3D display modes can be simply modulated by turning on different light source. The explanation of the proposed system is provided and the experimental results are also presented.
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Zi Wang, Anting Wang, Shulu Wang, Xiaohui Ma, Zhengbiao Deng, and Hai Ming "Convertible 2D-3D display using an edge-lit light guide plate based on integral imaging", Proc. SPIE 9579, Novel Optical Systems Design and Optimization XVIII, 95790P (3 September 2015);

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