Two frequency resonantly excited MEMS mirror for diode-laser...

Details Two frequency resonantly excited MEMS mirror for diode-laser... Two frequency resonantly excited MEMS mirror for diode-laser...

2011-06-14

2011-06-14

Cherry, Euncha P (Department: 2872)

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

Reexamination Certificate

active

07961370

ABSTRACT:
Apparatus for marking a bitmap image on tape includes a scanning mirror which is incorporated in a micro-electro-mechanical system (MEMS). The MEMS is torsionally resonant at two frequencies one being about three time the other. The MEMS is excited to resonance by applying an AC signal to the actuators, causing the mirror to oscillate. The AC signal has components at the two frequencies. The magnitude and phase-relationship of the components can be selected such that the mirror oscillates in an approximation of a triangle-wave.

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U.S. Appl. No. 12/233,026, filed Sep. 18, 2008, entitled “Wide Field Diode-Laser Marker with Swinging Projection-Optics,” by Sergei V. Govorkov et al, 20 pages in length.

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