In this letter, we demonstrate Drop-on-Demand printing of variable focus, polarisationindependent, liquid crystal (LC) microlenses. By carefully selecting the surface treatment applied to a glass substrate, we are able to deposit droplets with a well-defined curvature and contact angle, which result in micron-sized lenses with focal lengths on the order of 300µm - 900µm. Observations with an optical polarising microscope confirm the homeotopic alignment of the LC director in the droplets, which is in accordance with the polarisation independent focal length. Results show that microlenses of different focal lengths can be fabricated by depositing successive droplets onto the same location on the substrate, which can then be used to build up programmable and arbitrary arrays of microlenses of various lens sizes and focal lengths. Finally, we utilise the thermal dependency of the order parameter of the LC to demonstrate facile tuning of the focal length. This technique has the potential to offer a low-cost solution to the production of variable focus, arbitrary, microlens arrays.
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