Modeling of Microlens Arrays with Different Lens Shapes

Microlens arrays are found useful in many applications, such as imaging, wavefront sensing, light homogenizing, and so on. Due to different fabrication techniques / processes, the microlenses may appear in different shapes. In this example, microlens array with two typical lens shapes – square and round – are modeled. Because of the different apertures shapes, the focal spots are also different due to diffraction. The change of the focal spots distribution with respect to the imposed aberration in the input field is demonstrated.