JP6396271B2 - ズームレンズおよび撮像装置 - Google Patents
ズームレンズおよび撮像装置 Download PDFInfo
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- JP6396271B2 JP6396271B2 JP2015175691A JP2015175691A JP6396271B2 JP 6396271 B2 JP6396271 B2 JP 6396271B2 JP 2015175691 A JP2015175691 A JP 2015175691A JP 2015175691 A JP2015175691 A JP 2015175691A JP 6396271 B2 JP6396271 B2 JP 6396271B2
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- 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
- G02B15/144109—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 +--+
-
- 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
- G02B15/17—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
- G02B15/16—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
- G02B15/20—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 an additional movable lens or lens group for varying the objective focal length
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- 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
- G02B15/15—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 compensation by means of only one movement or by means of only linearly related movements, e.g. optical compensation
-
- 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
-
- 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
- G02B15/22—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 movable lens means specially adapted for focusing at close distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Description
0.3<(r4af−r4ar)/(r4af+r4ar)<0.9 …(1)
0.4<(r4af−r4ar)/(r4af+r4ar)<0.8 …(1−1)
ただし、
r4af:第4aレンズの物体側の面の曲率半径
r4ar:第4aレンズの像側の面の曲率半径
−3<(r4bf+r4br)/(r4bf−r4br)<−1.2 …(2)
−2.5<(r4bf+r4br)/(r4bf−r4br)<−1.4 …(2−1)
ただし、
r4bf:第4bレンズの物体側の面の曲率半径
r4br:第4bレンズの像側の面の曲率半径
0.2<(r2bf+r2br)/(r2bf−r2br)<0.8 …(3)
0.45<(r2bf+r2br)/(r2bf−r2br)<0.6 …(3−1)
ただし、
r2bf:第2bレンズの物体側の面の曲率半径
r2br:第2bレンズの像側の面の曲率半径
−2.5<(r2df−r2dr)/(r2df+r2dr)<−0.4 …(4)
−2<(r2df−r2dr)/(r2df+r2dr)<−0.6 …(4−1)
ただし、
r2df:第2dレンズの物体側の面の曲率半径
r2dr:第2dレンズの像側の面の曲率半径
0.4<f4/f4a<1 …(5)
0.5<f4/f4a<0.85 …(5−1)
ただし、
f4:第4レンズ群のd線における焦点距離
f4a:第4aレンズのd線における焦点距離
1.5<f4b/f4a<3 …(6)
1.8<f4b/f4a<2.5 …(6−1)
ただし、
f4b:第4bレンズのd線における焦点距離
f4a:第4aレンズのd線における焦点距離
0.3<(r4af−r4ar)/(r4af+r4ar)<0.9 …(1)
0.4<(r4af−r4ar)/(r4af+r4ar)<0.8 …(1−1)
ただし、
r4af:第4aレンズの物体側の面の曲率半径
r4ar:第4aレンズの像側の面の曲率半径
−3<(r4bf+r4br)/(r4bf−r4br)<−1.2 …(2)
−2.5<(r4bf+r4br)/(r4bf−r4br)<−1.4 …(2−1)
ただし、
r4bf:第4bレンズの物体側の面の曲率半径
r4br:第4bレンズの像側の面の曲率半径
0.2<(r2bf+r2br)/(r2bf−r2br)<0.8 …(3)
0.45<(r2bf+r2br)/(r2bf−r2br)<0.6 …(3−1)
ただし、
r2bf:第2bレンズの物体側の面の曲率半径
r2br:第2bレンズの像側の面の曲率半径
−2.5<(r2df−r2dr)/(r2df+r2dr)<−0.4 …(4)
−2<(r2df−r2dr)/(r2df+r2dr)<−0.6 …(4−1)
ただし、
r2df:第2dレンズの物体側の面の曲率半径
r2dr:第2dレンズの像側の面の曲率半径
0.4<f4/f4a<1 …(5)
0.5<f4/f4a<0.85 …(5−1)
ただし、
f4:第4レンズ群のd線における焦点距離
f4a:第4aレンズのd線における焦点距離
1.5<f4b/f4a<3 …(6)
1.8<f4b/f4a<2.5 …(6−1)
ただし、
f4b:第4bレンズのd線における焦点距離
f4a:第4aレンズのd線における焦点距離
まず、実施例1のズームレンズについて説明する。実施例1のズームレンズのレンズ構成を示す断面図を図1に示す。なお、図1および後述の実施例2〜7に対応した図2〜7においては、左側が物体側、右側が像面側であり、図示されている開口絞りStは必ずしも大きさや形状を表すものではなく、光軸Z上の位置を示すものである。また、図1では変倍の際の各レンズ群の移動軌跡、図1〜7では軸上光束waおよび最大画角の光束wbを合わせて示している。
6 フィルタ
7 撮像素子
8 信号処理回路
9 表示装置
10 撮像装置
G1 第1レンズ群
G2 第2レンズ群
G3 第3レンズ群
G4 第4レンズ群
PP 光学部材
L1a〜L4h レンズ
Sim 像面
St 絞り
wa 軸上光束
wb 最大画角の光束
Z 光軸
Claims (16)
- 物体側から順に、正の屈折力を有する第1レンズ群、負の屈折力を有する第2レンズ群、負の屈折力を有する第3レンズ群、正の屈折力を有する第4レンズ群から実質的になり、
前記第1レンズ群および前記第4レンズ群は変倍の際に像面に対して固定され、前記第2レンズ群は広角端から望遠端への変倍の際に物体側から像面側に移動し、前記第3レンズ群は前記第2レンズ群の移動による結像位置の変動を補正するように移動し、
前記第1レンズ群は、物体側から順に、像側に凹面を向けた負メニスカス形状の第1aレンズ、正の屈折力を有する第1bレンズ、像側よりも物体側の面の方が曲率半径の絶対値が小さい正の屈折力を有する第1cレンズから実質的になり、
前記第2レンズ群は、物体側から順に、物体側よりも像側の面の方が曲率半径の絶対値が小さい負の屈折力を有する第2aレンズ、両凹形状の第2bレンズ、像側よりも物体側の面の方が曲率半径の絶対値が小さい正の屈折力を有する第2cレンズ、負の屈折力を有する第2dレンズから実質的になり、
前記第3レンズ群は、物体側から順に、像側よりも物体側の面の方が曲率半径の絶対値が小さい負の屈折力を有する第3aレンズ、像側よりも物体側の面の方が曲率半径の絶対値が小さい正の屈折力を有する第3bレンズから実質的になり、
前記第4レンズ群は、最も物体側から順に連続して、像側に凸面を向けた正メニスカス形状の第4aレンズ、絞り、像側よりも物体側の面の方が曲率半径の絶対値が小さい正の屈折力を有する第4bレンズを有する
ことを特徴とするズームレンズ。 - 前記第2bレンズと前記第2cレンズは接合されている
請求項1記載のズームレンズ。 - 前記第3aレンズと前記第3bレンズは接合されている
請求項1または2記載のズームレンズ。 - 下記条件式(1)を満足する
請求項1から3のいずれか1項記載のズームレンズ。
0.3<(r4af−r4ar)/(r4af+r4ar)<0.9 …(1)
ただし、
r4af:前記第4aレンズの物体側の面の曲率半径
r4ar:前記第4aレンズの像側の面の曲率半径 - 下記条件式(2)を満足する
請求項1から4のいずれか1項記載のズームレンズ。
−3<(r4bf+r4br)/(r4bf−r4br)<−1.2 …(2)
ただし、
r4bf:前記第4bレンズの物体側の面の曲率半径
r4br:前記第4bレンズの像側の面の曲率半径 - 下記条件式(3)を満足する
請求項1から5のいずれか1項記載のズームレンズ。
0.2<(r2bf+r2br)/(r2bf−r2br)<0.8 …(3)
ただし、
r2bf:前記第2bレンズの物体側の面の曲率半径
r2br:前記第2bレンズの像側の面の曲率半径 - 下記条件式(4)を満足する
請求項1から6のいずれか1項記載のズームレンズ。
−2.5<(r2df−r2dr)/(r2df+r2dr)<−0.4 …(4)ただし、
r2df:前記第2dレンズの物体側の面の曲率半径
r2dr:前記第2dレンズの像側の面の曲率半径 - 下記条件式(5)を満足する
請求項1から7のいずれか1項記載のズームレンズ。
0.4<f4/f4a<1 …(5)
ただし、
f4:前記第4レンズ群のd線における焦点距離
f4a:前記第4aレンズのd線における焦点距離 - 下記条件式(6)を満足する
請求項1から8のいずれか1項記載のズームレンズ。
1.5<f4b/f4a<3 …(6)
ただし、
f4b:前記第4bレンズのd線における焦点距離
f4a:前記第4aレンズのd線における焦点距離 - 下記条件式(1−1)を満足する
請求項4記載のズームレンズ。
0.4<(r4af−r4ar)/(r4af+r4ar)<0.8 …(1−1) - 下記条件式(2−1)を満足する
請求項5記載のズームレンズ。
−2.5<(r4bf+r4br)/(r4bf−r4br)<−1.4 …(2−1) - 下記条件式(3−1)を満足する
請求項6記載のズームレンズ。
0.45<(r2bf+r2br)/(r2bf−r2br)<0.6 …(3−1) - 下記条件式(4−1)を満足する
請求項7記載のズームレンズ。
−2<(r2df−r2dr)/(r2df+r2dr)<−0.6 …(4−1) - 下記条件式(5−1)を満足する
請求項8記載のズームレンズ。
0.5<f4/f4a<0.85 …(5−1) - 下記条件式(6−1)を満足する
請求項9記載のズームレンズ。
1.8<f4b/f4a<2.5 …(6−1) - 請求項1から15のいずれか1項記載のズームレンズを備えた撮像装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015175691A JP6396271B2 (ja) | 2015-09-07 | 2015-09-07 | ズームレンズおよび撮像装置 |
US15/254,000 US9759899B2 (en) | 2015-09-07 | 2016-09-01 | Zoom lens and imaging apparatus |
CN201610802409.4A CN106501924B (zh) | 2015-09-07 | 2016-09-05 | 变焦透镜以及摄像装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015175691A JP6396271B2 (ja) | 2015-09-07 | 2015-09-07 | ズームレンズおよび撮像装置 |
Publications (2)
Publication Number | Publication Date |
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JP2017053892A JP2017053892A (ja) | 2017-03-16 |
JP6396271B2 true JP6396271B2 (ja) | 2018-09-26 |
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JP2015175691A Active JP6396271B2 (ja) | 2015-09-07 | 2015-09-07 | ズームレンズおよび撮像装置 |
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US (1) | US9759899B2 (ja) |
JP (1) | JP6396271B2 (ja) |
CN (1) | CN106501924B (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN107450171B (zh) * | 2017-08-09 | 2019-11-19 | 福建福光股份有限公司 | 适用于3ccd摄像机的透射式超长焦距高清变焦镜头 |
CN107561677A (zh) * | 2017-08-25 | 2018-01-09 | 天津津航技术物理研究所 | 手术显微镜的连续变焦照明系统 |
JP6797774B2 (ja) * | 2017-09-25 | 2020-12-09 | 富士フイルム株式会社 | 撮像レンズ及び撮像装置 |
CN110262023B (zh) * | 2019-07-17 | 2022-03-22 | 成都优视光电技术有限公司 | 一种四倍连续变焦4k高清光学系统 |
WO2021134451A1 (zh) * | 2019-12-31 | 2021-07-08 | 诚瑞光学(常州)股份有限公司 | 变焦距光学系统 |
CN113589504B (zh) * | 2021-08-04 | 2023-03-24 | 嘉兴中润光学科技股份有限公司 | 一种变焦镜头和成像装置 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5540852B2 (ja) * | 1972-10-09 | 1980-10-21 | ||
US4390248A (en) * | 1979-09-27 | 1983-06-28 | Canon Kabushiki Kaisha | Wide angle zoom lens |
JPS57177116A (en) * | 1981-04-24 | 1982-10-30 | Nippon Kogaku Kk <Nikon> | Zoom lens |
JPH02244110A (ja) * | 1989-03-17 | 1990-09-28 | Canon Inc | ズームレンズ |
US5221995A (en) * | 1989-08-12 | 1993-06-22 | Asahi Kogaku Kogyo K.K. | Zoom lens system |
JPH03145615A (ja) * | 1989-10-31 | 1991-06-20 | Canon Inc | ズームレンズ |
JPH03181909A (ja) * | 1989-12-11 | 1991-08-07 | Canon Inc | ズームレンズ |
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JPH05173070A (ja) * | 1991-12-25 | 1993-07-13 | Nikon Corp | ズームレンズ |
JPH08129134A (ja) * | 1994-11-01 | 1996-05-21 | Nikon Corp | ズームレンズ |
JP3957883B2 (ja) * | 1998-06-22 | 2007-08-15 | キヤノン株式会社 | ズームレンズ |
US6621643B2 (en) * | 2001-04-25 | 2003-09-16 | Nikon Corporation | Zoom lens system |
JP2006030582A (ja) | 2004-07-15 | 2006-02-02 | Fujinon Corp | 大口径ズームレンズ |
EP2045637B1 (en) * | 2007-10-02 | 2019-07-10 | Nikon Corporation | Zoom lens system |
JP2010072377A (ja) * | 2008-09-19 | 2010-04-02 | Fujinon Corp | ズームレンズおよび撮像装置 |
JP5491292B2 (ja) * | 2010-06-15 | 2014-05-14 | 富士フイルム株式会社 | ズームレンズおよび撮像装置 |
JP5617884B2 (ja) * | 2012-09-11 | 2014-11-05 | リコーイメージング株式会社 | ズームレンズ系及びこれを備えた電子撮像装置 |
EP2741116B1 (en) * | 2012-12-07 | 2015-06-24 | Samsung Electronics Co., Ltd | Zoom lens of the telephoto type having four lens groups with rear-focusing |
EP3015898A4 (en) * | 2013-06-28 | 2017-01-18 | Nikon Corporation | Variable magnification optical system, optical device and method for manufacturing variable magnification optical system |
JP6256792B2 (ja) * | 2013-08-09 | 2018-01-10 | 株式会社リコー | ズームレンズ、カメラおよび携帯情報端末装置 |
JP6238123B2 (ja) * | 2013-11-05 | 2017-11-29 | 株式会社リコー | ズームレンズおよびカメラ |
EP2899582A1 (en) * | 2014-01-27 | 2015-07-29 | Ricoh Company Ltd. | Zoom lens and imaging device using the same background |
JP6354196B2 (ja) * | 2014-02-19 | 2018-07-11 | 株式会社リコー | ズームレンズおよびこのズームレンズを用いた撮像装置 |
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2015
- 2015-09-07 JP JP2015175691A patent/JP6396271B2/ja active Active
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2016
- 2016-09-01 US US15/254,000 patent/US9759899B2/en active Active
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CN106501924A (zh) | 2017-03-15 |
US9759899B2 (en) | 2017-09-12 |
JP2017053892A (ja) | 2017-03-16 |
US20170068073A1 (en) | 2017-03-09 |
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