Title :
Fluidic Lens of PDMS Membrane Driven by Voice-Coil and Magnet
Author :
Choi, Hyunhwan ; Han, Dong Seok ; Won, Yong Hyub
Author_Institution :
Dept. of Electr. Eng., Korea Inst. of Sci. of Technol., Daejeon, South Korea
Abstract :
This letter presents a fluidic lens whose power can be rapidly adjusted. It is fabricated using a polydimethylsiloxane (PDMS) membrane combined with a ring-shaped magnet to form a single lens. The actuating force of this lens is generated by a voice-coil that exerts magnetic force onto the ring-shaped magnet, which moves upward and downward on the optical axis. It shows improved controllability that is smooth and fast, with a higher plus optical power than the current liquid lens of PDMS membrane. The focal length is measured to be 25 D, and demonstrates clearness by showing images captured by a digital camera.
Keywords :
cameras; lenses; magnetic forces; membranes; optical self-focusing; actuating force; digital camera; fluidic lens; focal length measurement; magnetic force; optical axis; polydimethylsiloxane membrane; ring-shaped magnet; voice-coil; Lenses; Liquids; Magnetic liquids; Magnetic resonance imaging; Optical device fabrication; Optical imaging; Optical refraction; Adaptive lens; fluidic; polydimethylsiloxane (PDMS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2212424
