[Paper] Luminance Uniformization of Light Through an Interleaved Linear Fresnel Lens Array by Superimposition of Variable Electronic Mask Patterns

The interleaved linear Fresnel lens is known to improve image quality in autostereoscopic displays with time-multiplexed directional backlight. In this paper, we propose a method to reduce crosstalk by narrowing the width of the elemental lenses in the interleaved linear Fresnel lens array, thereby decreasing the width of the directional light. Furthermore, to address the luminance non-uniformity that stands out when using a fine-pitch interleaved linear Fresnel lens array, we propose a technique in which an adaptive mask pattern is displayed on a liquid crystal display (LCD) panel and superimposed on the lens array. The proposed method reduced the crosstalk level approximately by half and improved luminance uniformity regardless of the viewing angle by applying an adaptive mask pattern.