Article

Planar Liquid Confinement for Optical Centering of Dielectric Liquid Lenses

IEEE Photonics Technology Letters (impact factor: 2.19). 11/2009; DOI:10.1109/LPT.2009.2028154 pp.1396 - 1398
Source: IEEE Xplore

ABSTRACT In this letter, planar liquid confinement structures along with concentric electrodes are proposed for the optical centering of dielectric liquid lenses at the rest state and during actuation. Both the liquid confinement structures and electrodes that are photolithographically fabricated on glass substrates share the same geometric center, thereby minimizing the deviation of the optical axis at all operation modes. Tilt angles of mesa liquid confinement structure are experimentally found to be 0.11deg in maximum and below 0.03deg during actuation for a liquid lens with a droplet of initially 7 mm in diameter.

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Keywords

concentric electrodes
 
dielectric liquid lenses
 
glass substrates share
 
liquid confinement structures
 
liquid lens
 
mesa liquid confinement structure
 
operation modes
 
optical axis
 
photolithographically fabricated
 
planar liquid confinement structures
 
rest state
 
Tilt angles
 

C.G. Tsai