A microlens of the present invention may include a liquid droplet whose position and/or surface curvature may be changed (tuned), e.g., by selectively biasing one or more electrodes configured to said droplet. The droplet may then be solidified to fix a desired configuration (e.g., focal length) of the microlens. In one embodiment, the droplet has an optically curable liquid adhesive that is polymerized under exposure to UV light. Microlenses of the present invention may be used, for example, in optical devices to obtain and then maintain optimal coupling between various optical components.

 
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