JP6807818B2 - 内視鏡用対物光学系および内視鏡 - Google Patents
内視鏡用対物光学系および内視鏡 Download PDFInfo
- Publication number
- JP6807818B2 JP6807818B2 JP2017187092A JP2017187092A JP6807818B2 JP 6807818 B2 JP6807818 B2 JP 6807818B2 JP 2017187092 A JP2017187092 A JP 2017187092A JP 2017187092 A JP2017187092 A JP 2017187092A JP 6807818 B2 JP6807818 B2 JP 6807818B2
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- objective optical
- endoscope
- conditional expression
- endoscope according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical effect Effects 0.000 title claims description 125
- 230000014509 gene expression Effects 0.000 claims description 37
- 230000004907 flux Effects 0.000 claims description 13
- 230000004075 alteration Effects 0.000 description 30
- 238000010586 diagram Methods 0.000 description 22
- 239000006059 cover glass Substances 0.000 description 7
- 238000005286 illumination Methods 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000013256 coordination polymer Substances 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 208000035473 Communicable disease Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00188—Optical arrangements with focusing or zooming features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/04—Reversed telephoto objectives
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2461—Illumination
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Lenses (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
0.7<HI/|f| …(1)
FD×FNo/|f|<6 …(2)
−2<βR<−0.8 …(3)
βR=HI/HM
0.75<HI/|f|<10 …(1−1)
0.9<FD×FNo/|f|<4.5 …(2−1)
−1.5<βR<−0.9 …(3−1)
BD/(2×HI)<1.2 …(4)
0.5<BD/(2×HI)<1.1 …(4−1)
3<2×HI/FD …(5)
3.5<2×HI/FD<30 …(5−1)
HI/(tan(ω)×|f|)<0.75 …(6)
0.01<HI/(tan(ω)×|f|)<0.65 …(6−1)
0.7<HI/|f| …(1)
FD×FNo/|f|<6 …(2)
−2<βR<−0.8 …(3)
0.7<HI/|f| …(1)
FD×FNo/|f|<6 …(2)
−2<βR<−0.8 …(3)
0.75<HI/|f|<10 …(1−1)
0.9<FD×FNo/|f|<4.5 …(2−1)
−1.5<βR<−0.9 …(3−1)
BD/(2×HI)<1.2 …(4)
0.5<BD/(2×HI)<1.1 …(4−1)
3<2×HI/FD …(5)
3.5<2×HI/FD<30 …(5−1)
HI/(tan(ω)×|f|)<0.75 …(6)
0.01<HI/(tan(ω)×|f|)<0.65 …(6−1)
100 内視鏡
102 操作部
104 挿入部
106 ユニバーサルコード
107 軟性部
108 湾曲部
109 湾曲操作ノブ
110 先端部
CP 平行平面板
L1〜L13 レンズ
PP 光学部材
Sim 結像面
St 開口絞り
a 軸上光束
b 最大画角の光束
Z 光軸
Claims (12)
- 物体面と共役な位置に中間像を形成し、該中間像を結像面に再結像させる内視鏡用対物光学系であって、
前記結像面における最大有効像高をHI、
全系の焦点距離をf、
最も物体側のレンズ面における有効光束径をFD、
全系のFナンバーをFNo、
前記中間像に対する前記結像面の近軸におけるリレー倍率をβRとした場合、
0.7<HI/|f| …(1)
FD×FNo/|f|<6 …(2)
−2<βR<−0.8 …(3)
で表される条件式(1)〜(3)を満足する内視鏡用対物光学系。 - 全系の各レンズ面における有効光束径の中で最大有効光束径をBDとした場合、
BD/(2×HI)<1.2 …(4)
で表される条件式(4)を満足する
請求項1記載の内視鏡用対物光学系。 - 3<2×HI/FD …(5)
で表される条件式(5)を満足する
請求項1または2記載の内視鏡用対物光学系。 - 全系の半画角をωとした場合、
HI/(tan(ω)×|f|)<0.75 …(6)
で表される条件式(6)を満足する
請求項1から3のいずれか1項記載の内視鏡用対物光学系。 - 最も物体側のレンズ面よりも物体側に平行平面板を有する
請求項1から4のいずれか1項記載の内視鏡用対物光学系。 - 0.75<HI/|f|<10 …(1−1)
で表される条件式(1−1)を満足する
請求項1記載の内視鏡用対物光学系。 - 0.9<FD×FNo/|f|<4.5 …(2−1)
で表される条件式(2−1)を満足する
請求項1記載の内視鏡用対物光学系。 - −1.5<βR<−0.9 …(3−1)
で表される条件式(3−1)を満足する
請求項1記載の内視鏡用対物光学系。 - 0.5<BD/(2×HI)<1.1 …(4−1)
で表される条件式(4−1)を満足する
請求項2記載の内視鏡用対物光学系。 - 3.5<2×HI/FD<30 …(5−1)
で表される条件式(5−1)を満足する
請求項3記載の内視鏡用対物光学系。 - 0.01<HI/(tan(ω)×|f|)<0.65 …(6−1)
で表される条件式(6−1)を満足する
請求項4記載の内視鏡用対物光学系。 - 請求項1から11のいずれか1項記載の内視鏡用対物光学系を備えた内視鏡。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017187092A JP6807818B2 (ja) | 2017-09-27 | 2017-09-27 | 内視鏡用対物光学系および内視鏡 |
US16/136,954 US10871641B2 (en) | 2017-09-27 | 2018-09-20 | Objective optical system for endoscope and endoscope |
CN201811112263.6A CN109557656B (zh) | 2017-09-27 | 2018-09-21 | 内窥镜用对物光学系统及内窥镜 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017187092A JP6807818B2 (ja) | 2017-09-27 | 2017-09-27 | 内視鏡用対物光学系および内視鏡 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019061167A JP2019061167A (ja) | 2019-04-18 |
JP6807818B2 true JP6807818B2 (ja) | 2021-01-06 |
Family
ID=65806592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017187092A Active JP6807818B2 (ja) | 2017-09-27 | 2017-09-27 | 内視鏡用対物光学系および内視鏡 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10871641B2 (ja) |
JP (1) | JP6807818B2 (ja) |
CN (1) | CN109557656B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112006639B (zh) * | 2019-05-31 | 2024-02-23 | 北京点阵虹光光电科技有限公司 | 电子内窥镜成像镜头 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026918A (ja) * | 1983-07-23 | 1985-02-09 | Fuji Photo Optical Co Ltd | 内視鏡用対物光学系 |
JPS60263916A (ja) * | 1984-06-13 | 1985-12-27 | Olympus Optical Co Ltd | 内焦式内視鏡対物レンズ |
JPH07101254B2 (ja) * | 1988-09-07 | 1995-11-01 | オリンパス光学工業株式会社 | 内視鏡対物レンズ |
JPH07122692B2 (ja) * | 1988-09-29 | 1995-12-25 | 富士写真光機株式会社 | 内視鏡用対物レンズ |
US5743846A (en) * | 1994-03-17 | 1998-04-28 | Olympus Optical Co., Ltd. | Stereoscopic endoscope objective lens system having a plurality of front lens groups and one common rear lens group |
US5508846A (en) * | 1994-06-15 | 1996-04-16 | The United States Of America As Represented By The Secretary Of The Army | Wide field of view objective lens assembly |
JPH0854561A (ja) * | 1994-08-09 | 1996-02-27 | Fuji Photo Optical Co Ltd | 視野角可変内視鏡用対物レンズ |
US5861987A (en) * | 1994-08-30 | 1999-01-19 | Olympus Optical Co., Ltd. | Stereoscopic-vision endoscope offering a large angle of introversion and a necessary and sufficient sense of three-dimensionality |
JP3563800B2 (ja) * | 1995-01-09 | 2004-09-08 | オリンパス株式会社 | 観察光学装置 |
JP4236241B2 (ja) * | 2002-07-26 | 2009-03-11 | フジノン株式会社 | 内視鏡用対物レンズ |
JP3967337B2 (ja) * | 2004-05-14 | 2007-08-29 | オリンパス株式会社 | 内視鏡および内視鏡装置 |
JP5035867B2 (ja) * | 2005-12-01 | 2012-09-26 | 富士フイルム株式会社 | 内視鏡用対物レンズ |
JP4884085B2 (ja) * | 2006-06-09 | 2012-02-22 | オリンパス株式会社 | 光学系 |
JP5086661B2 (ja) * | 2007-02-27 | 2012-11-28 | オリンパスメディカルシステムズ株式会社 | 内視鏡アダプタ光学系及び内視鏡 |
EP2162779B1 (en) * | 2007-06-28 | 2013-08-07 | Koninklijke Philips Electronics N.V. | Lens system |
JP5185578B2 (ja) | 2007-08-22 | 2013-04-17 | オリンパス株式会社 | 細径対物光学系 |
WO2009150653A1 (en) * | 2008-06-12 | 2009-12-17 | G.I. View Ltd | Optical system for use in an endoscope |
US8107170B2 (en) * | 2008-11-19 | 2012-01-31 | Olympus Corporation | Objective optical system |
JP6253437B2 (ja) * | 2014-02-14 | 2017-12-27 | キヤノン株式会社 | 結像光学系及びそれを有する画像投射装置 |
JP6313241B2 (ja) | 2015-02-17 | 2018-04-18 | 富士フイルム株式会社 | 内視鏡用対物レンズおよび内視鏡 |
US10067332B2 (en) * | 2015-11-05 | 2018-09-04 | Karl Storz Imaging, Inc. | Optical relay system with afocal menisci element |
CN107085295B (zh) * | 2017-06-30 | 2023-03-31 | 鹰利视医疗科技有限公司 | 内窥镜的光学成像系统 |
JP6800824B2 (ja) * | 2017-09-27 | 2020-12-16 | 富士フイルム株式会社 | 内視鏡用対物光学系および内視鏡 |
JP6877309B2 (ja) * | 2017-09-27 | 2021-05-26 | 富士フイルム株式会社 | 内視鏡用対物光学系および内視鏡 |
-
2017
- 2017-09-27 JP JP2017187092A patent/JP6807818B2/ja active Active
-
2018
- 2018-09-20 US US16/136,954 patent/US10871641B2/en active Active
- 2018-09-21 CN CN201811112263.6A patent/CN109557656B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN109557656B (zh) | 2021-12-24 |
JP2019061167A (ja) | 2019-04-18 |
US20190094517A1 (en) | 2019-03-28 |
US10871641B2 (en) | 2020-12-22 |
CN109557656A (zh) | 2019-04-02 |
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