Title:
OPTICAL SCAN ACTUATOR AND OPTICAL SCANNING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/198585
Kind Code:
A1
Abstract:
This optical scan actuator (1) is provided with: an optical fiber (2) having a distal end part (2a) supported in vibrating fashion; and a piezoelectric element (4) that by extending and retracting in the direction of the optical axis of the optical fiber (2) generates drive power to drive the distal end part (2a) of the optical fiber (2) in a direction perpendicular to the optical axis. The optical scan actuator (1) is configured to have rotational asymmetry, or double rotational symmetry, about the optical axis of the optical fiber (2), and is configured so that the direction of resonance of the distal end part (2a) of the optical fiber (2) and the direction of drive power of the piezoelectric element (4) are substantially parallel.
Inventors:
FUJIWARA MASATO (JP)
INNAMI TAKEHARU (JP)
INNAMI TAKEHARU (JP)
Application Number:
PCT/JP2015/003118
Publication Date:
December 30, 2015
Filing Date:
June 22, 2015
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B26/10; A61B1/00; H02N2/00
Domestic Patent References:
| WO2013069382A1 | 2013-05-16 |
Foreign References:
| JP2014071423A | 2014-04-21 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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