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    • 8. 发明授权
    • Composite lens structure
    • 复合透镜结构
    • US07656584B2
    • 2010-02-02
    • US11843590
    • 2007-08-22
    • Chih-Chiang ChaoPo-Ling ShiaoYu-Tsan TsengCheng-Hsuan LinMei-Chun Lai
    • Chih-Chiang ChaoPo-Ling ShiaoYu-Tsan TsengCheng-Hsuan LinMei-Chun Lai
    • G02B27/10G03B21/60
    • G02B5/0278G02B3/0056G02B5/0215
    • A composite lens structure is disclosed. The composite lens structure includes a diffusion plate and an optical structure formed on the diffusion plate. The optical structure includes a plurality of convex portions arranged in a 2-D matrix along a first direction and a second direction and a plurality of concave portions arranged in a 2-D matrix also along the first direction and the second direction. Each convex portion adjacent to a plurality of concave portions includes a low curvature portion and a high curvature portion higher than the low curvature portion. Each concave portion adjacent to a plurality of convex portions includes a low curvature portion and a high curvature portion lower than the low curvature portion. The convex portions, the concave portions and each junction of the convex portion and the concave portion have a curvature different from 0.
    • 公开了一种复合透镜结构。 复合透镜结构包括扩散板和形成在扩散板上的光学结构。 光学结构包括沿着第一方向和第二方向以2-D矩阵排列的多个凸部,以及沿着第一方向和第二方向排列成2-D矩阵的多个凹部。 与多个凹部相邻的每个凸部包括比曲率低的部分低曲率部分和高曲率部分。 与多个凸部相邻的每个凹部包括低曲率部分和低于低曲率部分的高曲率部分。 凸部,凹部和凸部与凹部的各接合部的曲率不同于0。