Analysis of deformation of flexible hemispherical lens arrays based on soft elastomers.

In this paper, flexible hemispherical lens arrays based on soft elastomers were fabricated. Then, the effects of various geometric parameters on the deformation (i.e., hemispherical deformation and radial extension) of these lens arrays were investigated experimentally and were verified by finite element analysis. We focused on determining the relationship between the geometric parameters and the radius of curvature of the lens. We found that the height of the lens support post plays an important role in minimizing changes in the radius of curvature of the lens. The results of this research offer valuable design principles for flexible lens arrays, which can be used as an optical component of various flexible optoelectronic devices.