Abstract
AbstractAn electrically tunable LCOS pico projector using a liquid crystal (LC) lens as an active optical element is demonstrated. The LC lens consists of two built‐in sub‐lenses: one is an electrically tunable focusing lens controlled by a LC layer and the other is a fixed focused polymeric lens. The tunable ranges of the electrically tunable LCOS pico projectors are 200 cm to ∼7 cm. The driving voltage of the electrically tunable focusing LCOS pico projector is less than 35 Vrms. The response times is 1.1 sec. The image performance of the electrically tunable focusing LCOS pico projector is also demonstrated.
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