JP4610959B2 - ズームレンズ - Google Patents
ズームレンズ Download PDFInfo
- Publication number
- JP4610959B2 JP4610959B2 JP2004215516A JP2004215516A JP4610959B2 JP 4610959 B2 JP4610959 B2 JP 4610959B2 JP 2004215516 A JP2004215516 A JP 2004215516A JP 2004215516 A JP2004215516 A JP 2004215516A JP 4610959 B2 JP4610959 B2 JP 4610959B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lens group
- zoom
- positive
- group
- 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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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
- G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
- G02B15/144105—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-+-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Description
0.24<f1/ft<0.29 ……(1)
―0.55<f2/f3<―0.44 ……(2)
そして、さらに、要求される仕様等に応じて次の好ましい条件を適宜採用して満足することで、収差性能をより良好なものとすることができる。
N1<1.52 ……(3)
80<ν1 ……(4)
0.24<f1/ft<0.29 ……(1)
―0.55<f2/f3<―0.44 ……(2)
N1<1.52 ……(3)
80<ν1 ……(4)
Claims (3)
- 物体側から順に、正の屈折力を有する第1レンズ群と、負の屈折力を有する第2レンズ群と、正の屈折力を有する第3レンズ群と、負の屈折力を有する第4レンズ群とからなる、物体像を結像させるズームレンズであって、
前記第2レンズ群と前記第3レンズ群とを光軸に沿って移動させて相互の間隔を変化させることにより焦点距離を連続的に変化させるようになされ、
以下の条件式(1),(2)を満足するように構成されている
ことを特徴とするズームレンズ。
0.24<f1/ft<0.29 ……(1)
―0.55<f2/f3<―0.44 ……(2)
ただし、
f1:第1レンズ群の焦点距離
f2:第2レンズ群の焦点距離
f3:第3レンズ群の焦点距離
ft:望遠端における全系の焦点距離 - 前記第1レンズ群は、物体側から順に、負レンズと、正レンズと、正レンズとからなり、
かつ、以下の条件式(3),(4)を満足するように構成されている
ことを特徴とする請求項1に記載のズームレンズ。
N1<1.52 ……(3)
80<ν1 ……(4)
ただし、
N1:第1レンズ群における正レンズの屈折率の平均
ν1:第1レンズ群における正レンズのアッベ数の平均 - 前記第2レンズ群は、物体側から順に、負レンズと、正レンズおよび負レンズからなる貼り合わせレンズとからなり、
前記第3レンズ群は、物体側から順に、正レンズと、負レンズおよび正レンズからなる貼り合わせレンズとからなる
ことを特徴とする請求項1または2に記載のズームレンズ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004215516A JP4610959B2 (ja) | 2004-07-23 | 2004-07-23 | ズームレンズ |
US11/152,050 US7079327B2 (en) | 2004-07-23 | 2005-06-15 | Large zoom ratio zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004215516A JP4610959B2 (ja) | 2004-07-23 | 2004-07-23 | ズームレンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006039005A JP2006039005A (ja) | 2006-02-09 |
JP4610959B2 true JP4610959B2 (ja) | 2011-01-12 |
Family
ID=35656862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004215516A Active JP4610959B2 (ja) | 2004-07-23 | 2004-07-23 | ズームレンズ |
Country Status (2)
Country | Link |
---|---|
US (1) | US7079327B2 (ja) |
JP (1) | JP4610959B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11175486B2 (en) | 2018-10-16 | 2021-11-16 | Fujifilm Corporation | Zoom lens and imaging apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM314340U (en) * | 2007-01-19 | 2007-06-21 | Genius Electronic Optical Co Ltd | Optics system with adjustable focus |
JP5185799B2 (ja) * | 2008-12-19 | 2013-04-17 | オリンパスイメージング株式会社 | ズームレンズ及びそれを備えた撮像装置 |
JP5438620B2 (ja) | 2010-07-29 | 2014-03-12 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP5954577B2 (ja) * | 2012-07-19 | 2016-07-20 | 株式会社リコー | 結像レンズ、レンズユニット、撮像装置 |
JP5341247B2 (ja) * | 2012-12-17 | 2013-11-13 | オリンパスイメージング株式会社 | ズームレンズ及びそれを備えた撮像装置 |
JP6188798B2 (ja) | 2013-06-04 | 2017-08-30 | Cbc株式会社 | ズームレンズ |
RU2607842C1 (ru) * | 2015-08-28 | 2017-01-20 | Публичное акционерное общество "Красногорский завод им. С.А. Зверева" | Макрообъектив с переменным увеличением |
JP2017173650A (ja) | 2016-03-25 | 2017-09-28 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
CN107065154B (zh) * | 2017-06-08 | 2022-11-08 | 西安中科飞图光电科技有限公司 | 紧凑型连续变焦光学系统 |
JP7207854B2 (ja) | 2018-02-28 | 2023-01-18 | キヤノン株式会社 | ズームレンズ及び撮像装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004004827A (ja) * | 2002-05-10 | 2004-01-08 | Leica Microsystems (Schweiz) Ag | 顕微鏡で使用されるアフォーカルズーム装置 |
JP2004138963A (ja) * | 2002-10-21 | 2004-05-13 | Olympus Corp | アフォーカルズームレンズ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0677104B2 (ja) * | 1984-03-02 | 1994-09-28 | オリンパス光学工業株式会社 | アフオ−カルズ−ムレンズ |
JPH0792544B2 (ja) * | 1988-10-07 | 1995-10-09 | キヤノン株式会社 | 変倍範囲可変のズームレンズ |
JP3486560B2 (ja) | 1998-10-14 | 2004-01-13 | キヤノン株式会社 | ズームレンズ |
JP2001281548A (ja) * | 2000-01-25 | 2001-10-10 | Olympus Optical Co Ltd | ズームレンズ |
JP4205879B2 (ja) | 2001-09-27 | 2009-01-07 | Hoya株式会社 | 超高変倍ズームレンズ系 |
-
2004
- 2004-07-23 JP JP2004215516A patent/JP4610959B2/ja active Active
-
2005
- 2005-06-15 US US11/152,050 patent/US7079327B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004004827A (ja) * | 2002-05-10 | 2004-01-08 | Leica Microsystems (Schweiz) Ag | 顕微鏡で使用されるアフォーカルズーム装置 |
JP2004138963A (ja) * | 2002-10-21 | 2004-05-13 | Olympus Corp | アフォーカルズームレンズ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11175486B2 (en) | 2018-10-16 | 2021-11-16 | Fujifilm Corporation | Zoom lens and imaging apparatus |
Also Published As
Publication number | Publication date |
---|---|
US7079327B2 (en) | 2006-07-18 |
JP2006039005A (ja) | 2006-02-09 |
US20060018035A1 (en) | 2006-01-26 |
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