Microlens array produced using hot embossing process

In this paper, the fabrication of molds that are suitable for the production of microlens arrays using the replication technique is discussed. Variation of parameters in the replication process were investigated. A focused ion beam was used to fabricate the microlens cavities on three materials, with silicon showing the best result. Hot embossing was used to produce replicated polycarbonate lens array. The temperature of the mold and the embossing force were the two parameters varied. The microlens array produced using the embossing replication process demonstrates the possibility of nanometre fabrication. (C) 2002 Elsevier Science B.V. All rights reserved.