Optical deflection apparatus, head-up display apparatus, optical writing unit, image forming apparatus, and object recognition apparatus
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United States of America Patent
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Oct 6, 2020
Grant Date -
Oct 11, 2018
app pub date -
Jun 12, 2018
filing date -
Dec 18, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical deflection apparatus includes a mirror unit, a pair of elastic supporting units configured to rotatably support the mirror unit around a predetermined axis, at least one drive unit configured to elastically deform the pair of elastic supporting units, and a drive control unit configured to input a drive frequency into the at least one drive unit so as to control the at least one drive unit, wherein a first time interval at which the drive control unit changes the drive frequency in a first temperature range is shorter than a second time interval at which the drive control unit changes the drive frequency in a second temperature range, the second temperature range being at a higher temperature than the first temperature range.
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