Variable-Focus Liquid Lens Integrated with a Planar Electromagnetic Actuator.

ABSTRACT: In this paper, we design, fabricate and characterize a new electromagnetically actuated variable-focus liquid lens which consists of two polymethyl methacrylate (PMMA) substrates, a SU-8 substrate, a polydimethylsiloxane (PDMS) membrane, a permanent magnet and a planar electromagnetic actuator. The performance of this liquid lens is tested from four aspects including surface profiling, optical observation, variation of focal length and dynamic response speed. The results shows that with increasing current, the optical chamber PDMS membrane bulges up into a shape with a smaller radius of curvature, and the picture recorded by a charge-coupled device (CCD) camera through the liquid lens also gradually becomes blurred. As the current changes from -1 to 1.2 A, the whole measured focal length o

SUBMITTER: Wang L 

PROVIDER: S-EPMC6190286 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature