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UV cured lenses: applied electric fields

The development of an inexpensive, reproducible and highly accurate method for the production of microlens arrays is of vital importance to the next generation of optics based technologies. One technique that has been used to produce arrays is the inkjet deposition method. When lenses are produced using this method they are normally found to have spherical profiles. Although spherical lenses are of great importance in optics we note that aspheric lenses also have a wide number of applications. These include beam shaping, power transfer and fiber coupling. To date attempts to produce aspheric lenses using the inkjet method have failed. In this report we propose a novel method to produce aspheric lenses by applying an external electric field to the lens while the lens is in liquid form. In this report we describe initial experiments involving both single lenses that prove the initial concept and also initial studies of arrays of lenses produced using inkjet technique. The single lenses are shown to differ substantially from the standard case (no E-field) post curing.