VCSELs constitute now strategic light sources for optical communications as well as for instrumentation or sensing applications. Despite a limited far-field beam divergence, these sources have more and more to be associated with micro-optical components to enhance their performances or to increase their integration in systems. In this context, we have developed a new deposition technique based on a microcantilever-based spotter to fabricate polymer microlenses array. Spherical microlenses with good optical quality were demonstrated with a home-made thermocurable epoxy polymer (collaboration TONA-IR-VUB). Microlenses sizes achievable with this novel method were shown to be well suited for VCSEL beam collimation. In order to integrate such microlenses onto VCSEL devices, uniform thick SU-8 pedestals implementing different geometries and sizes were fabricated and their influence on the deposited microlenses was studied. A cylindrical shape was found to be the best suited to ensure a self-alignment of the polymer droplets on top of the pedestal. The application of this method to the monolithic integration of self-aligned polymer refractive microlenses on VCSELs has led to a significant reduction of the initial beam divergence (in the range [1-4°]). The thermal reliability of these microlenses is now under study in collaboration with CIRIMAT laboratory and EADS Astrium (FIAB SU-8 project).