OPTICAL SCANNER

PROBLEM TO BE SOLVED: To suppress variation in scanning characteristic caused by temperature variation in an optical scanner using torsional vibration.SOLUTION: An optical scanner 1 includes: a mirror 31 having a reflection plane for reflecting a light beam; and elastic coupling sections 16a and 16b...

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Bibliographic Details
Main Authors OYAMA KOICHI, NISHIKAWA HIDEAKI, TSUGE AKIO, WADO HIROYUKI
Format Patent
LanguageEnglish
Published 15.05.2014
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES
MICROSTRUCTURAL TECHNOLOGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PERFORMING OPERATIONS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To suppress variation in scanning characteristic caused by temperature variation in an optical scanner using torsional vibration.SOLUTION: An optical scanner 1 includes: a mirror 31 having a reflection plane for reflecting a light beam; and elastic coupling sections 16a and 16b serving as a rotation axis k for torsionally vibrating the mirror 31. By oscillating the mirror 31 about the rotation axis k, scanning is performed using the light beam reflected by the reflection plane. A heat actuator 34 connects a weight member 32 so that the weight member 32 can oscillate about the rotation axis k integrally with the mirror 31, and displaces the weight member 32 so that the moment of inertia about the rotation axis k of the weight member 32 decreases as the temperature increases.
Bibliography:Application Number: JP20120237921