TUNABLE LIQUID CRYSTAL OPTICAL DEVICE
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United States of America Patent
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Issued Date -
Apr 21, 2011
app pub date -
Jun 5, 2009
filing date -
Jun 22, 2008
priority date (Note) -
Abandoned
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Abstract
A liquid crystal optical device has a layered structure with split liquid crystal layers having alignment surfaces that define in a liquid crystal material pre-tilt angles of opposite signs. Four liquid crystal layers can provide two directions of linear polarization. In the case of a lens, the device can be a gradient index lens, and the alignment surfaces can have a spatially uniform pre-tilt.
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