The astigmatic microstructures and condensing microstructures are radial arranged on out-light surface or in-light surface of the board.
散光微结构区及聚光微结构区间 隔排列的设置于板体的出光面或入光面上。
Astigmatic microstructures contain several cambered surface transmission microstructures, each of the cambered surface transmission microstructures possess an arc convex surface.
散光微结构区包含数个弧面透光微结构，每一弧面透光微结构具有圆弧凸面。
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