JP2010046424A5 - - Google Patents

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Publication number
JP2010046424A5
JP2010046424A5 JP2008215738A JP2008215738A JP2010046424A5 JP 2010046424 A5 JP2010046424 A5 JP 2010046424A5 JP 2008215738 A JP2008215738 A JP 2008215738A JP 2008215738 A JP2008215738 A JP 2008215738A JP 2010046424 A5 JP2010046424 A5 JP 2010046424A5
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JP
Japan
Prior art keywords
magnetic field
shape memory
memory alloy
alloy wire
insertion portion
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JP2008215738A
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Japanese (ja)
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JP2010046424A (en
JP5231137B2 (en
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Priority to JP2008215738A priority Critical patent/JP5231137B2/en
Priority claimed from JP2008215738A external-priority patent/JP5231137B2/en
Publication of JP2010046424A publication Critical patent/JP2010046424A/en
Publication of JP2010046424A5 publication Critical patent/JP2010046424A5/ja
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Publication of JP5231137B2 publication Critical patent/JP5231137B2/en
Expired - Fee Related legal-status Critical Current
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Claims (6)

先端部に撮像ユニットが内蔵された長尺な挿入部を備えた内視鏡であって、
前記撮像ユニットに設けられ、光学レンズを光軸方向の前後に進退させて光学特性を変更する移動レンズユニットと、
少なくとも一端が前記挿入部に設けられ、該一端に前記移動レンズユニットと接続される強磁性形状記憶合金ワイヤと、
前記挿入部に設けられ、前記強磁性形状記憶合金ワイヤが挿通される磁界発生コイルと、
前記磁界発生コイルに磁場を発生消滅させて、前記強磁性形状記憶合金ワイヤの歪量を可変制御する可変制御手段と、
を備えたことを特徴とする内視鏡。 An endoscope provided with a long insertion portion with an imaging unit built in the tip,
A moving lens unit that is provided in the imaging unit and changes the optical characteristics by moving the optical lens back and forth in the optical axis direction; and
A ferromagnetic shape memory alloy wire having at least one end provided in the insertion portion and connected to the moving lens unit at the one end ;
A magnetic field generating coil provided in the insertion portion and through which the ferromagnetic shape memory alloy wire is inserted ;
Variable control means for variably controlling the amount of strain of the ferromagnetic shape memory alloy wire by generating and extinguishing a magnetic field in the magnetic field generating coil;
An endoscope characterized by comprising: 先端部に撮像ユニットが内蔵された長尺な挿入部を備えた内視鏡であって、
前記撮像ユニットに設けられ、光学レンズを光軸方向の前後に進退させて光学特性を変更する、一部が強磁性材料から形成された移動レンズユニットと、
該移動レンズユニットの外周に配設された磁石と、
少なくとも一端が前記挿入部に設けられ、該一端が前記磁石に当接するように磁性体から形成された固定具と接続される強磁性形状記憶合金ワイヤと、
前記挿入部に設けられ、前記強磁性形状記憶合金ワイヤが挿通される磁界発生コイルと、
前記磁界発生コイルに磁場を発生消滅させて、前記強磁性形状記憶合金ワイヤの歪量を可変制御する可変制御手段と、
を備えたことを特徴とする内視鏡。 An endoscope provided with a long insertion portion with an imaging unit built in the tip,
A moving lens unit partially formed of a ferromagnetic material , which is provided in the imaging unit and changes the optical characteristics by moving the optical lens back and forth in the optical axis direction;
A magnet disposed on the outer periphery of the moving lens unit;
A ferromagnetic shape memory alloy wire connected to a fixture formed of a magnetic body so that at least one end is provided in the insertion portion and the one end abuts the magnet;
A magnetic field generating coil provided in the insertion portion and through which the ferromagnetic shape memory alloy wire is inserted ;
Variable control means for variably controlling the amount of strain of the ferromagnetic shape memory alloy wire by generating and extinguishing a magnetic field in the magnetic field generating coil;
An endoscope characterized by comprising: 前記挿入部内に設けられた強磁性形状記憶合金ワイヤ、及び前記磁界発生コイルが前記挿入部に連接される操作部まで延設されていることを特徴とする請求項１、または請求項２に記載の内視鏡。 3. The ferromagnetic shape memory alloy wire provided in the insertion portion and the magnetic field generating coil are extended to an operation portion connected to the insertion portion. Endoscope. 前記可変制御手段は、前記磁界発生コイルへ電流の印加と停止を切換えて、前記強磁性形状記憶合金ワイヤの周囲に磁場を発生消滅させることを特徴とする請求項１から請求項３のいずれか１項に記載の内視鏡。   4. The variable control unit according to any one of claims 1 to 3, wherein the variable control means switches between application and stop of current to the magnetic field generating coil to generate and extinguish a magnetic field around the ferromagnetic shape memory alloy wire. The endoscope according to item 1. 前記可変制御手段は、前記磁界発生コイルへ永久磁石の接触と非接触を切換えて、前記強磁性形状記憶合金ワイヤの周囲に磁場を発生消滅させることを特徴とする請求項１から請求項３のいずれか１項に記載の内視鏡。   The variable control means switches between contact and non-contact of a permanent magnet to the magnetic field generating coil to generate and extinguish a magnetic field around the ferromagnetic shape memory alloy wire. The endoscope according to any one of the above. 前記移動レンズユニットを撮影光軸に沿った一方向へ付勢する弾性部材を有し、
前記強磁性形状記憶合金ワイヤが収縮して前記移動レンズユニットを前記弾性部材の付勢力に抗して他方へ牽引することを特徴とする請求項１から請求項５のいずれか１項に記載の内視鏡。 An elastic member for urging the moving lens unit in one direction along the photographing optical axis;
6. The device according to claim 1, wherein the ferromagnetic shape memory alloy wire contracts to pull the moving lens unit to the other against the biasing force of the elastic member. Endoscope.
JP2008215738A 2008-08-25 2008-08-25 Endoscope Expired - Fee Related JP5231137B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008215738A JP5231137B2 (en) 2008-08-25 2008-08-25 Endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008215738A JP5231137B2 (en) 2008-08-25 2008-08-25 Endoscope

Publications (3)

Publication Number Publication Date
JP2010046424A JP2010046424A (en) 2010-03-04
JP2010046424A5 true JP2010046424A5 (en) 2011-09-15
JP5231137B2 JP5231137B2 (en) 2013-07-10

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JP2008215738A Expired - Fee Related JP5231137B2 (en) 2008-08-25 2008-08-25 Endoscope

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581028B1 (en) * 2010-11-09 2015-03-04 Olympus Medical Systems Corp. Image pickup apparatus for endoscope
JP5274733B1 (en) * 2011-10-13 2013-08-28 オリンパスメディカルシステムズ株式会社 Imaging unit and endoscope
JP5747351B2 (en) * 2011-12-07 2015-07-15 オリンパス株式会社 Endoscope
JP5998014B2 (en) * 2012-11-07 2016-09-28 富士フイルム株式会社 Imaging apparatus and endoscope apparatus
JP5412590B2 (en) * 2013-02-27 2014-02-12 オリンパスメディカルシステムズ株式会社 Endoscope imaging unit
CN106028907B (en) * 2014-02-25 2018-11-13 奥林巴斯株式会社 Camera unit and endoscope
DE102016219054A1 (en) * 2016-09-30 2018-04-05 Carl Zeiss Microscopy Gmbh Actuator with shape memory element
CN209525507U (en) * 2018-12-26 2019-10-22 瑞声科技(新加坡)有限公司 A kind of camera lens
JP2020130437A (en) * 2019-02-15 2020-08-31 オリンパス株式会社 Endoscope distal end part unit

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US5056902A (en) * 1990-04-25 1991-10-15 Smith & Nephew Dyonics, Inc. Magnetically coupled lens actuator
JPH06315282A (en) * 1993-03-04 1994-11-08 Olympus Optical Co Ltd Actuator
JPH10307628A (en) * 1997-05-08 1998-11-17 Minolta Co Ltd Position control driving device
JPH10331740A (en) * 1997-06-02 1998-12-15 Toyota Motor Corp Super-magnetostriction type fuel injection valve
JP4055872B2 (en) * 1998-03-25 2008-03-05 泰文 古屋 Iron-based magnetic shape memory alloy and method for producing the same
JP2005275270A (en) * 2004-03-26 2005-10-06 Toshiba Corp Lens barrel and imaging apparatus
JP5114031B2 (en) * 2005-10-31 2013-01-09 オリンパス株式会社 Endoscope device

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