MEMS mirror driven by one motion with oscillations of...

Details MEMS mirror driven by one motion with oscillations of... MEMS mirror driven by one motion with oscillations of...

2011-06-28

2011-06-28

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

Reexamination Certificate

active

07969637

ABSTRACT:
A micro-electro-mechanical system (MEMS) mirror system has an actuator that imparts a motion with a first periodic movement of high frequency superimposed a second periodic movement of low frequency to a frame and a mirror coupled to the frame so that the mirror rotates about two axes. The mirror is coupled by springs to the frame so the mirror is rotatable about a first axis. The frame has pivots each coupled by springs to actuators so the frame is rotatable about a second axis. The mirror has a first resonant frequency and the frame including the mirror has a second resonant frequency. The low frequency of the second periodic movement is equal to one of the first and the second resonant frequencies, and the high frequency of the first periodic movement is equal to the other one of the first and the second resonant frequencies.

REFERENCES:
patent: 6533947 (2003-03-01), Nasiri et al.
patent: 7224507 (2007-05-01), Kamiya et al.

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