OPTICAL SCANNING DEVICE

WIPO Patent Application WO/2012/070610

A1

This optical scanning device (1) has: a main movable part (10); a pair of main torsion beams (21 and 22) that are disposed opposite each other on both ends of the main movable part (10), pivotably support the main movable part (10), and are capable of torsional deformation; and a main drive unit (30) that pivots the main movable part (10). The main movable part (10) has: a mirror part (11) provided with a reflecting surface (11a) that reflects light; and a pair of permanent magnets (12 and 13) disposed opposite each other with the mirror part (11) interposed therebetween, each of which extends along the pivot axis (X-X) of the main movable part (10). The main drive unit (30) has: yoke parts (31, 32, 33) arranged so as to surround the permanent magnets (12 and 13) along the pivot axis (X-X) of the main movable part (10); and coils (34) that are wound around the yoke parts (31, 32, 33), and when energized, excite the yoke parts (31, 32, 33), thereby producing magnetic fields that act on the permanent magnets (12 and 13).

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HONDA TAKESHI (JP)
TAKANASHI NOBUAKI (JP)

PCT/JP2011/077027

May 31, 2012

November 24, 2011

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NEC CORP (JP)
HONDA TAKESHI (JP)
TAKANASHI NOBUAKI (JP)

B81B3/00; G02B26/10

JP2010049259A	2010-03-04
JP2005181430A	2005-07-07
JP2002228905A	2002-08-14
JP2011197233A	2011-10-06
JP2011000556A	2011-01-06

MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)

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