[2] Cox J A. Application of diffractive optics to infrared imagers[C]. SPIE, 2550, 304-312(1995).
[3] Pease R F W. Electron beam lithography[J]. Contemporary Physics, 22, 265-290(1981).
[28] Tian Z N, Yao W G, Xu J J et al. Focal varying microlens array[J]. Opt Lett, 40, 4222-4225(2015).