MIRROR SWING RANGE CONTROL DEVICE OF LIGHT SCANNING APPARATUS
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United States of America Patent
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N/A
Issued Date -
Nov 24, 2011
app pub date -
May 16, 2011
filing date -
May 21, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The mirror swing range control device is capable of reducing a production cost of the control device and precisely adjusting a swing range of a mirror section. The mirror swing range control device comprises: a swing range detecting section for detecting a swing range of the mirror section swung by driving the vibration source; a signal processing section for arithmetically processing a detection signal, which is generated by the swing range detecting section, so as to generate an inverted detection signal; a standard value generating section for generating a standard value signal indicating a standard time interval; a comparing section for adding the inverted detection signal to the standard value signal, integrating calculated errors and generating an error signal; and a swing range adjusting section for performing feedback control, in which a cancelling signal is applied to the drive circuit for a prescribed time when the comparing section generates the error signal, so as to cancel an increase-decrease value of the error signal.
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