Magnetically-actuated MEMS cat's eye retroreflectors for optical identification
Journal
International Conference on Optical MEMS and Nanophotonics
Journal Volume
02-05-August-2015
Date Issued
2015
Author(s)
Abstract
We present a MEMS tunable cat's eye retroreflector consisting of a rotational concave reflecting micromirror which provides the modulation of the optical retroreflection intensity. Magnetic beads are attached to this rotatable unit to enable magnetic actuation. The magnetically-actuated mirror achieves a large tilt angle. The tilt angle of the concave micromirror of the cay's eye retroreflector can change from 0° to 12°, with the retroreflection efficiency varying from 19% to 5%.
Type
conference paper