Abstract
A liquid crystal (LC) microlens array using double lenticular electrodes is proposed. Two
identical substrates with a lenticular electrode on each surface are prepared. The two lenticular
electrodes are placed in parallel position with a gap. When a voltage is applied across the
electrodes, a periodically inhomogeneous electric field can be generated. Such an electric field
can cause a homogeneous LC with a gradient refractive index distribution. Our experiment results
show that the lens cell can present good focusing property. The shortest focal length (
${\sim} {{1.1}}$
mm) of the lens cell can be obtained at a low operating voltage (18
${V}_{\rm rms}$
).
© 2013 IEEE
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