In the present work, the pyro-electrohydrodynamic technique was used for the realization of tunable-size microlens arrays. Poly(methyl methacrylate) dissolved in different solvent mixtures was used as the polymeric material for the realization of the microstructures. By controlling the experimental parameters and in particular, the volume of the drop reservoir, graded-size square arrays of tens of microlenses with focal length in the range 1.5–3 mm were produced. Moreover, the optical quality and geometrical features were investigated by profilometric and interferometric analysis.
© 2013 Optical Society of America
Original Manuscript: July 25, 2013
Revised Manuscript: October 11, 2013
Manuscript Accepted: October 14, 2013
Published: November 4, 2013
I. A. Grimaldi, S. Coppola, F. Loffredo, F. Villani, G. Nenna, C. Minarini, V. Vespini, L. Miccio, S. Grilli, and P. Ferraro, "Graded-size microlens array by the pyro-electrohydrodynamic continuous printing method," Appl. Opt. 52, 7699-7705 (2013)