JP2022024121A5 - - Google Patents
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- JP2022024121A5 JP2022024121A5 JP2021189286A JP2021189286A JP2022024121A5 JP 2022024121 A5 JP2022024121 A5 JP 2022024121A5 JP 2021189286 A JP2021189286 A JP 2021189286A JP 2021189286 A JP2021189286 A JP 2021189286A JP 2022024121 A5 JP2022024121 A5 JP 2022024121A5
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- optical system
- variable magnification
- magnification optical
- focal length
- 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 claims 14
- 230000005499 meniscus Effects 0.000 claims 1
Claims (10)
前記後続レンズ群は、物体側から順に、第4レンズ群と、負の屈折力を有する第5レンズ群とを有し、
変倍時に、前記第1レンズ群と前記第2レンズ群との間隔が変化し、前記第2レンズ群と前記第3レンズ群との間隔が変化し、前記第3レンズ群と前記後続レンズ群との間隔が変化し、前記後続レンズ群の隣り合うレンズ群の間隔が変化し、
変倍時に、前記第1レンズ群は移動し、
合焦時に移動する合焦レンズ群は、前記後続レンズ群に含まれ、
以下の条件式を満足する変倍光学系。
0.040 < βFw < 0.800
0.100 <BFw/fw < 1.00
但し、
βFw:広角端状態における前記合焦レンズ群の横倍率
BFw:広角端状態における前記変倍光学系のバックフォーカス
fw:広角端状態における前記変倍光学系の焦点距離 From the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a subsequent lens group having a positive refractive power. It consists of
The subsequent lens group has a fourth lens group and a fifth lens group having a negative refractive power in order from the object side.
At the time of scaling, the distance between the first lens group and the second lens group changes, the distance between the second lens group and the third lens group changes, and the third lens group and the subsequent lens group change. The distance between the lens and the lens changes, and the distance between adjacent lens groups of the subsequent lens group changes.
At the time of scaling, the first lens group moves,
The in- focus lens group that moves during in-focus is included in the subsequent lens group, and is included in the subsequent lens group .
A variable magnification optical system that satisfies the following conditional expression.
0.040 <βFw <0.800
0.100 <BFw / fw <1.00
however,
βFw: Lateral magnification of the in-focus lens group in the wide-angle end state BFw: Back focus of the variable magnification optical system in the wide-angle end state fw: Focal length of the variable magnification optical system in the wide-angle end state
-3.000 < f5/f3 < -0.500-3.00 <f5 / f3 <-0.500
但し、however,
f3:前記第3レンズ群の焦点距離 f3: Focal length of the third lens group
f5:前記第5レンズ群の焦点距離 f5: Focal length of the fifth lens group
変倍時に、前記第6レンズ群は移動しない請求項1または2に記載の変倍光学系。 The variable magnification optical system according to claim 1 or 2, wherein the sixth lens group does not move at the time of magnification change.
4.000 < f1/f1Rw < 9.0004.000 <f1 / f1Rw <9000
但し、however,
f1:前記第1レンズ群の焦点距離 f1: Focal length of the first lens group
f1Rw:前記第1レンズ群より像面側に配置されたレンズ群の広角端状態における合成焦点距離 f1Rw: Combined focal length in the wide-angle end state of the lens group arranged on the image plane side of the first lens group.
0.500 < 1/βRw < 1.0000.500 <1 / βRw <1,000
但し、however,
βRw:広角端状態における最も像面側に配置されたレンズ群の横倍率 βRw: Lateral magnification of the lens group placed closest to the image plane in the wide-angle end state
0.500 < f2fn/f2 < 1.1000.500 <f2fn / f2 <1.10
但し、however,
f2fn:前記第2レンズ群内の最も物体側のレンズ成分の焦点距離 f2fn: Focal length of the lens component on the most object side in the second lens group
f2:前記第2レンズ群の焦点距離 f2: Focal length of the second lens group
0.300 < fF/ft < 1.4000.300 <fF / ft <1.400
但し、however,
fF:前記合焦レンズ群の焦点距離 fF: Focal length of the focusing lens group
ft:望遠端状態における前記変倍光学系の焦点距離 ft: Focal length of the variable magnification optical system in the telephoto end state
40.00° < ωw < 85.00°40.00 ° <ωw <85.00 °
但し、however,
ωw:広角端状態における前記変倍光学系の半画角 ωw: Half angle of view of the variable magnification optical system in the wide-angle end state
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021189286A JP2022024121A (en) | 2017-09-11 | 2021-11-22 | Zoom optical system, optical device, and method of manufacturing zoom optical system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019540732A JP6988900B2 (en) | 2017-09-11 | 2017-09-11 | Magnification optical system, optical device, and manufacturing method of variable magnification optical system |
PCT/JP2017/032695 WO2019049372A1 (en) | 2017-09-11 | 2017-09-11 | Variable magnification optical system, optical device, and production method for variable magnification optical system |
JP2021189286A JP2022024121A (en) | 2017-09-11 | 2021-11-22 | Zoom optical system, optical device, and method of manufacturing zoom optical system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019540732A Division JP6988900B2 (en) | 2017-09-11 | 2017-09-11 | Magnification optical system, optical device, and manufacturing method of variable magnification optical system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022024121A JP2022024121A (en) | 2022-02-08 |
JP2022024121A5 true JP2022024121A5 (en) | 2022-07-06 |
Family
ID=65634914
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019540732A Active JP6988900B2 (en) | 2017-09-11 | 2017-09-11 | Magnification optical system, optical device, and manufacturing method of variable magnification optical system |
JP2021189286A Pending JP2022024121A (en) | 2017-09-11 | 2021-11-22 | Zoom optical system, optical device, and method of manufacturing zoom optical system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019540732A Active JP6988900B2 (en) | 2017-09-11 | 2017-09-11 | Magnification optical system, optical device, and manufacturing method of variable magnification optical system |
Country Status (2)
Country | Link |
---|---|
JP (2) | JP6988900B2 (en) |
WO (1) | WO2019049372A1 (en) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3196283B2 (en) * | 1992-02-13 | 2001-08-06 | ミノルタ株式会社 | Zoom lens device |
KR100301874B1 (en) * | 1993-07-12 | 2002-06-24 | Nikon Corp | Zoom lens |
JP2011022191A (en) * | 2009-07-13 | 2011-02-03 | Sony Corp | Zoom lens and imaging apparatus |
JP5544827B2 (en) * | 2009-11-04 | 2014-07-09 | 株式会社ニコン | Variable magnification optical system, optical device |
US8339713B2 (en) * | 2009-11-04 | 2012-12-25 | Nikon Corporation | Zoom optical system, optical apparatus and method for manufacturing zoom optical system |
JP5474501B2 (en) * | 2009-11-12 | 2014-04-16 | オリンパス株式会社 | Imaging optical system and electronic imaging apparatus having the same |
JP2011128445A (en) * | 2009-12-18 | 2011-06-30 | Sony Corp | Zoom lens and image pickup apparatus |
JP2012042512A (en) * | 2010-08-12 | 2012-03-01 | Olympus Imaging Corp | Imaging apparatus |
US8432464B2 (en) * | 2010-08-12 | 2013-04-30 | Olympus Imaging Corp. | Zoom lens system for image pickup apparatus |
JP2012078788A (en) * | 2010-09-10 | 2012-04-19 | Tamron Co Ltd | Zoom lens |
JP5210371B2 (en) * | 2010-12-20 | 2013-06-12 | 富士フイルム株式会社 | Variable magnification optical system with image stabilization function and imaging apparatus equipped with the variable magnification optical system |
JP5316614B2 (en) * | 2011-08-25 | 2013-10-16 | 株式会社ニコン | Zoom lens, imaging device |
EP2921897A4 (en) * | 2012-11-14 | 2016-10-12 | Nikon Corp | Variable power optical assembly, optical device, and variable power optical assembly fabrication method |
WO2014155463A1 (en) * | 2013-03-27 | 2014-10-02 | 富士フイルム株式会社 | Zoom lens and imaging device |
JP2016156942A (en) * | 2015-02-24 | 2016-09-01 | 株式会社ニコン | Zoom lens, optical device, and method for manufacturing zoom lens |
-
2017
- 2017-09-11 WO PCT/JP2017/032695 patent/WO2019049372A1/en active Application Filing
- 2017-09-11 JP JP2019540732A patent/JP6988900B2/en active Active
-
2021
- 2021-11-22 JP JP2021189286A patent/JP2022024121A/en active Pending
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