Temperature effects on dielectric liquid lenses
Abbreviated Journal Title
OPTICAL SWITCH; DROPLETS; Optics
The thermal stability of dielectric liquid lenses is studied by measuring the focal length at different temperatures. Two types of liquids lenses are investigated: Type-I (SL-5267/glycerol) and Type-II (glycerol/BK7 matching liquid). A threshold-like behavior is found. Below the threshold temperature, the focal length is temperature insensitive. Above the threshold, the focal length changes exponentially with the temperature. Both refractive index and surface profile are responsible for the focal length change, although the former decreases linearly with the temperature. The threshold temperature of Type-I and Type-II liquid lens are 60 degrees and 40 degrees C, respectively. Type-I lens shows a good temperature stability in a wide range. Moreover, the lens can recover to its original state even though it is operated at a high temperature. (C) 2014 Optical Society of America
H. X. Zhang; H. W. Ren; S. Xu;S. T. Wu
"Temperature effects on dielectric liquid lenses" (2014). Faculty Bibliography 2010s. 5664.