Patent ID: 8810879
Filing Date: 2014-08-19
Classification: G02B,H01F,H02K,H02N,Y10T

Abstract:
1. A micro-electro-mechanical device for actuating a gimbaled element for two-dimensional optical scanning, the device comprising: a. an electro-magnetically activated gimbal operative for electro-magnetically driven rotation about a first axis in accordance with a step-wave shaped input signal; b. a mirror mounted on said gimbal and operative for electro-statically driven rotation about a second axis, thereby defining two degrees of freedom of motion for said mirror, the mirror comprising at least one rotor electrode and the gimbal comprising at least one stator electrode, where the rotor and stator electrode/s together comprise an electro-static comb-drive and both include respective coplanar portions both manufactured in a single process from a single Si layer, wherein an electrical potential difference between top surfaces of the rotor and stator electrodes is created by fringing fields of electro-static force therebetween causing the rotor electrode/s to rotate about its/their axis; and c. a mirror motion feedback control loop including: