Title :
Fluidic Lens of Floating Water Using Intermediate Hydrophilic Layer Based on Electrowetting
Author :
Hyunhwan Choi ; Yong Hyub Won
Author_Institution :
Dept. of Electr. Eng., Korea Inst. of Sci. of Technol., Daejeon, South Korea
Abstract :
This letter presents a liquid lens that uses an electrowetting principle while also employing a floating lens between actuating fluids. The lens shape is a double-sided curved surface, and it has powerful optical properties, showing a focal length of 12.6 mm with a 2 mm aperture diameter, and operating with a bias voltage 0-60 V. The lens has shown mechanical reliability sufficient to hold a floating shape that is robust against vibration of 200 RPM. An image seen through the lens can resolve an element better than 5.65 LP/mm on the USAF 1951 1x standard.
Keywords :
hydrophilicity; lenses; optical images; reliability; vibrations; water; wetting; USAF 1951 1x standard; actuating fluids; bias voltage; double-sided curved surface; electrowetting; floating lens; floating shape; floating water; fluidic lens; focal aperture diameter; intermediate hydrophilic layer; lens shape; liquid lens; mechanical reliability; optical properties; size 2 mm; vibrations; voltage 0 V to 60 V; Dielectric materials; Electrodes; Lenses; Liquids; Optical device fabrication; Optical imaging; Shape; Adaptive lens; electrowetting; floating; fluidic;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2276944
