VARIABLE LENSES WITH IMPROVED IMAGE QUALITY DURING CONTINUOUS FOCUS, VIDEO RECORDING DEVICES, AND SYSTEMS AND METHODS COMPRISING THE SAME
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United States of America Patent
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Issued Date -
Jun 16, 2022
app pub date -
Mar 12, 2020
filing date -
Mar 12, 2020
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Abstract
A liquid lens can include a cavity, a first liquid disposed within the cavity, and a second liquid disposed within the cavity. A focus of the liquid lens can be adjustable by adjusting a shape of a variable interface defined by the first liquid and the second liquid. Upon adjusting the focus of the liquid lens in a periodic oscillation with a peak-to-valley amplitude of 20 diopter and a frequency of 2 Hz, a root mean square (RMS) wavefront error (WFE) of the liquid lens measured at 1 ms intervals can remain at 100 nm or less throughout one complete cycle of the periodic oscillation.
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