CPC G02B 30/40 (2020.01) [G02B 7/06 (2013.01); H04N 13/144 (2018.05); H04N 13/167 (2018.05); H04N 13/351 (2018.05); H04N 13/398 (2018.05)] | 11 Claims |
1. A focus tunable optical system, comprising:
a compound lens comprising a plurality of focus tunable lenses, each of the focus tunable lenses having an optical response with an oscillation artifact; and
a controller configured to shift a focus of the compound lens from a first focal plane to a second focal plane by applying control signals to the plurality of focus tunable lenses,
wherein applying the control signals comprises applying to each of the focus tunable lenses a respective control signal, the respective control signal having a first value for the first focal plane and a second value for the second focal plane, wherein the controller is configured to apply the control signals to the plurality of focus tunable lenses in a time-shifted manner, so that the applied control signals are time-shifted relative to each other.
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