Fabrication of polymer compound microlens by lens-on-lens microstructures

Abstract

We proposed a novel method for fabricating polymer compound microlenses (PCMLs) using micro-inkjet technique and subsequent curing process. Two different types of PCMLs with sandwich microstructure (PDMS-Glycerol-PDMS), concave and convex PCMLs,have beendesigned and fabricated in experiments. Convex PCML has two real images and two foci. The concave PCML has one real and one virtual focal planes, whichcan generate one real image and one virtual image respectively. Moreover, the diameter of concave PCML can be controlled by adjusting the curing time and temperature. The proposed method is simple, efficient and suitable for realizing large-scale high numerical aperture PCMLs array, which has potential applications in diverse optical systems such as optical storage and three-dimensional imaging.

Recent Development of Lens Array Fabrication: A Review

“…Xia et al [75] spin-coated a layer of non-organic composite photo resist material (Armorer) on a flexible substrate, and used a Fem to second laser beam to irradiate the photo resist surface with precise pulses. The spherical curved surface of the lens array is laminated to prepare a three-dimensional bionic artificial compound eye.…”

Concave microlens arrays through an etching-assisted laser seeding method

“…除了上述具有球面轮廓的微透镜以外, 还有一类 具有复杂轮廓/构型的微透镜同样具有光束整形等重 要应用 [17] . 例如, 具有双曲面轮廓的微透镜能够整形 出一束非对称离散输出光 [18] ; 具有椭圆锥面轮廓的微 透镜能够实现发光二极管与单模光纤之间的高效耦 合 [18,19] ; 具有圆柱轮廓的微透镜阵列能够增加有机发 光二极管面板的发光效率 [18][19][20] 等.…”

Rapid optical μ-printing of polymer top-lensed microlens array

“…A microlens with two aspheric surfaces was fabricated to achieve a diffraction-limited focus spot for high-density optical storage systems [4]. Particularly, a special kind of microlenses with lens-on-lens structures has attracted remarkable attention because of its extraordinary beam reshaping abilities as well as the promising applications in diverse optical systems, such as optical storage and unconfined fluctuating target counting systems [5][6][7][8][9][10].…”