AI Article Synopsis
- The study introduces liquid lenses that can change their focal length using small liquid droplets (300-700 μm), controlled by dielectric forces.
- The focal length of a 500 μm droplet lens decreases from 4.4 mm to 2.2 mm when voltage increases from 0 to 79 V(rms).
- High-speed cameras reveal that the lenses respond dynamically, with advancing and receding times of 90 ms and 60 ms, respectively, and the focal length varies with droplet size.
Article Abstract
This study presents packaged microscale liquid lenses actuated with liquid droplets of 300-700 μm in diameter using the dielectric force manipulation. The liquid microlens demonstrated function focal length tunability in a plastic package. The focal length of the liquid lens with a lens droplet of 500 μm in diameter is shortened from 4.4 to 2.2 mm when voltages applied change from 0 to 79 V(rms). Dynamic responses that are analyzed using 2000 frames∕s high speed motion cameras show that the advancing and receding times are measured to be 90 and 60 ms, respectively. The size effect of dielectric liquid microlens is characterized for a lens droplet of 300-700 μm in diameter in an aspect of focal length.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3026028 | PMC |
| http://dx.doi.org/10.1063/1.3494030 | DOI Listing |
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