OPTICAL SCANNING DEVICE AND ABNORMALITY DETECTION METHOD

An optical scanning device of the present disclosure includes: a micromirror device including a mirror that has a reflecting surface for reflecting light and is swingable around at least one axis, and an actuator that allows the mirror to swing; a control device configured to control an operation of...

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Bibliographic Details
Main Authors ABE, Masaaki, NAONO, Takayuki, NISHIURA, Yosuke
Format Patent
LanguageEnglish
Published 02.11.2023
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:An optical scanning device of the present disclosure includes: a micromirror device including a mirror that has a reflecting surface for reflecting light and is swingable around at least one axis, and an actuator that allows the mirror to swing; a control device configured to control an operation of the actuator; a light irradiation device configured to irradiate a back surface of the mirror on a side opposite to the reflecting surface with illumination light; a detection device to which reflected light of the illumination light that has been reflected by the mirror is incident and configured to output a position signal representing a position of the incidence light; and an abnormality detection device configured to detect an abnormal operation of the mirror based on a temporal fluctuation amount of the position signal.
Bibliography:Application Number: US202318300557