Backlight system using an interleaved Fresnel lens array that attains a uniform luminance and two-dimensional directional light control
Backlight system using an interleaved Fresnel lens array that attains a uniform luminance and two-dimensional directional light control
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DOI：
10.1364/ol.446701
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发表时间：
2022-01-15
期刊：
影响因子：
3.6
通讯作者：
Kakeya, Hideki
中科院分区：
文献类型：
--
作者：
Borjigin, Garimagai;Kakeya, Hideki
提出了一种新颖的菲涅耳透镜阵列，以实现具有二维方向性的均匀定向背光。采用所提出的透镜阵列的自动立体显示提高了图像输出质量，减轻了观看者的姿势限制，而不需要任何额外的辅助视力。在所提出的透镜阵列中，由两个相邻的线性菲涅耳透镜组成的微小棱镜相互交错，使两个透镜实际上可以重叠并独立工作。单棱镜的宽度取决于到每个透镜中心的距离。因此，通过两个透镜的光是混合的，这导致更高和更均匀的亮度强度。利用所提出的透镜阵列制作的基于时间复用定向背光法的自动立体显示样机，实现了左眼和右眼图像亮度均匀和低串扰。(C)根据Optica开放获取出版协议条款，2022年Optica出版集团
A novel (to the best of our knowledge) Fresnel lens array is proposed to realize a uniform directional backlight with two-dimensional directionality. Autostereoscopic display with the proposed lens array improves image output quality and relieves the viewer's posture restriction without the need for any additional eye aid. In the proposed lens array, tiny prisms composing two adjacent linear Fresnel lenses are interleaved so that the two lenses may be virtually overlapped and work independently. The widths of the elemental prisms vary depending on the distance from the center of each lens. Thus, the light passing through the two lenses is mixed, which results in higher and more uniform luminance intensity. A prototype of an autostereoscopic display based on the time-multiplexed directional backlight method and made with the proposed lens array attained uniform luminance as well as low cross-talk between left-eye and right-eye images. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement