论文标题
通过反设计大面积，高NA多级衍射镜头
Large-area, high-NA Multi-level Diffractive Lens via inverse design
论文作者
论文摘要
扁平镜头使更薄，更轻，更简单的成像系统。但是，由于计算和制造挑战，大面积和高NA扁平镜头是难以捉摸的。在这里，我们应用了反设计以创建厚度<1.35μm，直径为4.13mm，Na = 0.9的多级衍射透镜（MDL），在850nm的波长下为0.9。由于MDL是在聚合物中创建的，因此可以通过烙印光刻进行成本效益复制。
Flat lenses enable thinner, lighter, and simpler imaging systems. However, large-area and high-NA flat lenses have been elusive due to computational and fabrication challenges. Here, we applied inverse design to create a multi-level diffractive lens (MDL) with thickness <1.35μm, diameter of 4.13mm, NA=0.9 at wavelength of 850nm. Since the MDL is created in polymer, it can be cost-effectively replicated via imprint lithography.
