Calibration of tunable liquid crystal optical device
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United States of America Patent
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Jan 19, 2016
Grant Date -
Sep 26, 2013
app pub date -
Sep 21, 2011
filing date -
Sep 21, 2010
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Abstract
A tunable liquid crystal optical device is described. The optical device has an electrode arrangement associated with a liquid crystal cell and includes a hole patterned electrode, wherein control of the liquid crystal cell depends on electrical characteristics of liquid crystal optical device layers. The optical device further has a circuit for measuring said electrical characteristics of the liquid crystal optical device layers, and a drive signal circuit having at least one parameter adjusted as a function of the measured electrical characteristics. The drive signal circuit generates a control signal for the electrode arrangement.
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