Agile beam steering mirror for active raster scan error...

Details Agile beam steering mirror for active raster scan error... Agile beam steering mirror for active raster scan error...

2007-12-21

2009-06-02

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S237000

Reexamination Certificate

active

07542200

ABSTRACT:
Scan line position error resulting in banding, bow, skew, etc. is corrected by way of an agile beam steering mirror assembly in a ROS printing system and the like. The agile beam steering mirror system comprises a piezoelectric bending actuator fixedly mounted to a substrate at a proximate end thereof. A mirror structure is mounted at a free distal end of the bending actuator. Voltage applied to the bending actuator causes rotation of the mirror to thereby correct for positional errors of the scan line. Correction waveforms may be stored in control memory associated with the agile beam steering mirror assembly. A capacitive sensing circuit using a sensing electrode located beneath the free end of the bending actuator may be used in a feedback arrangement to determine and control mirror position.

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