We have developed integral three-dimensional (3D) television using an ultra high definition imaging system. The system uses a device having 7680 pixels in the horizontal direction and 4320 pixels in the vertical direction for each of the red, green, and blue channels. A lens array comprising 400 lenses is configured in the horizontal direction and one comprising 250 lenses is configured in the vertical direction. The system is designed to ensure a maximum spatial frequency of 11.3 cycles/degree and a viewing angle of 24 degrees when the display is observed from three times the display height. The setup described here has simultaneously maintained the balance between the maximum spatial frequency and the viewing angle by shortening the focal length of the elemental lens while narrowing the pitch of the elemental lens. We have confirmed the generation of 3D images with an appearance that varies in a natural manner according to the position of the observer.
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