Title:
OPTICAL SCANNING TYPE ENDOSCOPE
Document Type and Number:
Japanese Patent JP2014145941
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical scanning type endoscope in which a scanning trajectory upon scanning of an observed object is stable and a signal can be detected thanks to an irradiation of laser light even from a central part of scanning the observed object.SOLUTION: The optical scanning type endoscope having a stationary section and an oscillation section comprises: a fiber that irradiates an observed object with laser light from a tip of the oscillation section; a driving section for oscillating and driving the oscillation section of the fiber; and a detection section that detects light obtained by the irradiation of the laser light from the observed object. The driving section oscillates the oscillation section of the fiber by a drive frequency, and deviates amplitude of an oscillation of the fiber by a modulation frequency between a substantial zero and a prescribed maximum value. The drive frequency is adapted so as to be a frequency higher than a frequency having the modulation frequency added to a high frequency side sub-resonant frequency (f) and lower than a prescribed upper-limit frequency (f), or lower than a frequency having the modulation frequency subtracted from a low frequency side sub-resonant frequency (f), and higher than a prescribed lower-limit frequency (f).
Inventors:
FUJIWARA MASATO
NISHIMURA JUNICHI
YAMADA MASAFUMI
NAMIKI MITSURU
NISHIMURA JUNICHI
YAMADA MASAFUMI
NAMIKI MITSURU
Application Number:
JP2013014814A
Publication Date:
August 14, 2014
Filing Date:
January 29, 2013
Export Citation:
Assignee:
OLYMPUS CORP
International Classes:
G02B23/24; A61B1/06; G02B21/06; G02B26/10
Domestic Patent References:
| JP2012152244A | 2012-08-16 | |||
| JP2010527028A | 2010-08-05 | |||
| JP2012152244A | 2012-08-16 |
Foreign References:
| US20070213618A1 | 2007-09-13 | |||
| US20070213618A1 | 2007-09-13 |
Other References:
JPN6016033543; Ｓｕｃｂｅｉ Ｍｏｏｎ ｅｔ． ａｌ．: '"Ｓｅｍｉ-ｒｅｓｏｎａｎｔ ｏｐｅｒａｔｉｏｎ ｏｆ ａ ｆｉｂｅｒ-ｃａｎｔｉｌｅｖｅｒ ｐｉｅｚｏｔｕｂｅ ｓｃａｎｎｅｒ ｆｏｒ ｓｔａｂｌｅ ｏｐｔｉｃａｌ ｃｏｈｅｒｅｎｃｅ ｔｏｍｏｇｒ' ＯＰＴＩＣＳ ＥＸＰＲＥＳＳ Ｖｏｌ． １８， Ｎｏ． ２０, 20100927, ２１１８３-２１１９７
JPN6016033543; Ｓｕｃｂｅｉ Ｍｏｏｎ ｅｔ． ａｌ．: '"Ｓｅｍｉ-ｒｅｓｏｎａｎｔ ｏｐｅｒａｔｉｏｎ ｏｆ ａ ｆｉｂｅｒ-ｃａｎｔｉｌｅｖｅｒ ｐｉｅｚｏｔｕｂｅ ｓｃａｎｎｅｒ ｆｏｒ ｓｔａｂｌｅ ｏｐｔｉｃａｌ ｃｏｈｅｒｅｎｃｅ ｔｏｍｏｇｒ' ＯＰＴＩＣＳ ＥＸＰＲＥＳＳ Ｖｏｌ． １８， Ｎｏ． ２０, 20100927, ２１１８３-２１１９７
JPN6016033543; Ｓｕｃｂｅｉ Ｍｏｏｎ ｅｔ． ａｌ．: '"Ｓｅｍｉ-ｒｅｓｏｎａｎｔ ｏｐｅｒａｔｉｏｎ ｏｆ ａ ｆｉｂｅｒ-ｃａｎｔｉｌｅｖｅｒ ｐｉｅｚｏｔｕｂｅ ｓｃａｎｎｅｒ ｆｏｒ ｓｔａｂｌｅ ｏｐｔｉｃａｌ ｃｏｈｅｒｅｎｃｅ ｔｏｍｏｇｒ' ＯＰＴＩＣＳ ＥＸＰＲＥＳＳ Ｖｏｌ． １８， Ｎｏ． ２０, 20100927, ２１１８３-２１１９７
Attorney, Agent or Firm:
Kenji Sugimura
Ken-ichi Shimoji
Ken-ichi Shimoji