Title:
OPTICAL FIBER SCANNER, LIGHTING DEVICE, AND OBSERVATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/068924
Kind Code:
A1
Abstract:
To achieve the objective of efficiently transmitting vibrations of a piezoelectric element to an optical fiber and easily increasing vibrations at the tip of the optical fiber, an optical fiber scanner (10) according to the present invention is provided with: a long, narrow optical fiber (11) that conducts light and emits light from the tip; a coil spring (21) that comprises an elastic material that is closely adhered to the outer peripheral surface of the optical fiber (11) so as to cover the outer peripheral surface at a position that is spaced apart from the tip toward the base end side; a piezoelectric element (23A) that is fixed by being adhered to the outer peripheral surface of the coil spring (21), undergoes stretching vibration in the length direction of the optical fiber (11) due to the application of an alternating voltage of a prescribed frequency, and generates, in the optical fiber (11) via the coil spring (21), bending vibration in a direction that intersects with the length direction; and a fixed part that is fixed to the coil spring (21).
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Inventors:
YOKOTA HIROKAZU (JP)
KASAI YASUAKI (JP)
TSURUTA HIROSHI (JP)
KASAI YASUAKI (JP)
TSURUTA HIROSHI (JP)
Application Number:
PCT/JP2016/078731
Publication Date:
April 27, 2017
Filing Date:
September 28, 2016
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B1/00
Domestic Patent References:
| WO2014057774A1 | 2014-04-17 |
Foreign References:
| JP2011156235A | 2011-08-18 | |||
| JP2010162089A | 2010-07-29 | |||
| JP2010162090A | 2010-07-29 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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