公开(公告)号：US11092788B2

公开(公告)日：2021-08-17

申请号：US16580645

申请日：2019-09-24

Applicant: FUJIFILM Corporation

Inventor： Kazuyoshi Okada ,  Taro Asami

IPC: G02B15/177 ,  G02B15/173 ,  G02B13/18 ,  G02B9/64 ,  G02B5/00 ,  G02B13/00

Abstract: The imaging lens consists of, in order from an object side, a positive first lens group and a positive second lens group. During focusing, the first lens group does not move and the second lens group moves. First and second lenses from an object side in the first lens group are a negative lens. The second lens group consists of a stop disposed on the most object side, two negative lenses, and three or four positive lenses. A lens on the most object side of the second lens group is a negative lens. A lens on the most image side of the second lens group is a positive lens. Predetermined conditional expressions are satisfied.

公开(公告)号：US09507127B2

公开(公告)日：2016-11-29

申请号：US14855734

申请日：2015-09-16

Applicant: FUJIFILM Corporation

Inventor： Taro Asami

IPC: G02B9/64 ,  G02B13/00 ,  G02B27/00 ,  G02B13/04

CPC classification number: G02B13/0045 ,  G02B9/64 ,  G02B13/04 ,  G02B27/0025

Abstract: An imaging lens consists of, in order from the object side, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When f is the focal length of the entire system, D4 is the air space between the second lens and the third lens, f345 is the combined focal length of the third lens, the fourth lens, and the fifth lens, f1 is the focal length of the first lens, and f2 is the focal length of the second lens, the following conditional formulae are satisfied: D4/f

公开(公告)号：US09405102B2

公开(公告)日：2016-08-02

申请号：US14601544

申请日：2015-01-21

Applicant: FUJIFILM Corporation

Inventor： Taro Asami

IPC: G02B9/62 ,  G02B13/18 ,  G02B13/00 ,  G02B13/04 ,  G03B3/00

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  G02B13/18 ,  G03B3/00

Abstract: An imaging lens consists essentially of six lenses in the following order from the object side: a negative first lens; a positive second lens; a negative third lens; a positive fourth lens; a positive fifth lens; and a negative sixth lens. Conditional expression (1) is satisfied, wherein f is the focal length of the entire system, and f5 is the focal length of the fifth lens: 2.38

Abstract translation: 成像透镜基本上由物体侧按照以下顺序由六个透镜组成：负第一透镜; 一个正的第二个镜头; 负第三透镜; 正第四透镜; 正五号镜头; 和负第六透镜。 满足条件表达式（1），其中f是整个系统的焦距，f5是第五透镜的焦距：2.38

公开(公告)号：US09383555B2

公开(公告)日：2016-07-05

申请号：US14603386

申请日：2015-01-23

Applicant: FUJIFILM CORPORATION

Inventor： Taro Asami

IPC: G02B9/60 ,  G02B13/04 ,  G02B9/62 ,  G02B13/00 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  G02B13/18

Abstract: An imaging lens consists essentially of six lenses in the following order from the object side: a negative first lens; a positive second lens; a negative third lens; a positive fourth lens; a positive fifth lens; and a negative sixth lens. An aperture stop is disposed more toward the object side than the image-side surface of the fourth lens. Conditional expression (4) is satisfied, where f is the focal length of the entire system, and f56 is the combined focal length of the fifth lens and the sixth lens: f56/f

Abstract translation: 成像透镜基本上由物体侧按照以下顺序由六个透镜组成：负第一透镜; 一个正的第二个镜头; 负第三透镜; 正第四透镜; 正五号镜头; 和负第六透镜。 孔径光阑被设置为比第四透镜的图像侧表面更靠近物体侧。 满足条件表达式（4），其中f是整个系统的焦距，f56是第五透镜和第六透镜的组合焦距：f56 / f <-6.4（4）。

公开(公告)号：US09170404B2

公开(公告)日：2015-10-27

申请号：US14675892

申请日：2015-04-01

Applicant: FUJIFILM Corporation

Inventor： Taro Asami ,  Toshiaki Katsuma ,  Toru Ito ,  Masato Kondo ,  Ryoko Otomo

IPC: G02B13/04 ,  G02B3/02 ,  G02B13/00 ,  G02B9/62 ,  G02B13/06 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  G02B13/06 ,  G02B13/18

Abstract: An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. When a curvature radius of an object-side surface of the fourth lens is R8, and a curvature radius of an image-side surface of the fourth lens is R9, and an Abbe number of the material of the third lens for d-line is νd3, and an Abbe number of the material of the fifth lens for d-line is νd5, the following conditional formulas (1) and (6) are satisfied: −0.61

Abstract translation: 成像透镜基本上由物体侧依次由负的第一透镜，负的第二透镜，正的第三透镜，正的第四透镜，负的第五透镜和正的第六透镜的六个透镜组成。 当第四透镜的物体侧表面的曲率半径为R8，第四透镜的像侧表面的曲率半径为R9时，d线的第三透镜的材料的阿贝数为 ＆ngr; d3，并且d线的第五透镜的材料的阿贝数为n5;满足以下条件式（1）和（6）：-0.61 <（R8 + R9）/（R8- R9）<0.44（1）; 和38.1 <＆ngr; d3 +＆ngr; d5 <45.1（6）。

公开(公告)号：US09030764B2

公开(公告)日：2015-05-12

申请号：US14219018

申请日：2014-03-19

Applicant: FUJIFILM Corporation

Inventor： Taro Asami ,  Toshiaki Katsuma ,  Toru Ito ,  Masato Kondo ,  Ryoko Otomo

IPC: G02B13/04 ,  G02B3/02 ,  G02B13/06 ,  G02B13/00 ,  G02B9/62 ,  G02B13/18

CPC classification number: G02B13/0045 ,  G02B9/62 ,  G02B13/04 ,  G02B13/06 ,  G02B13/18

Abstract: An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. When a curvature radius of an object-side surface of the fourth lens is R8, and a curvature radius of an image-side surface of the fourth lens is R9, and an Abbe number of the material of the third lens for d-line is νd3, and an Abbe number of the material of the fifth lens for d-line is νd5, the following conditional formulas (1) and (6) are satisfied: −0.61

Abstract translation: 成像透镜基本上由物体侧依次由负的第一透镜，负的第二透镜，正的第三透镜，正的第四透镜，负的第五透镜和正的第六透镜的六个透镜组成。 当第四透镜的物体侧表面的曲率半径为R8时，第四透镜的像侧表面的曲率半径为R9，并且用于d线的第三透镜的材料的阿贝数为 ＆ngr; d3，并且d线的第五透镜的材料的阿贝数为n5;满足以下条件式（1）和（6）：-0.61 <（R8 + R9）/（R8- R9）<0.44（1）; 和38.1 <＆ngr; d3 +＆ngr; d5 <45.1（6）。

公开(公告)号：US09019634B2

公开(公告)日：2015-04-28

申请号：US14224716

申请日：2014-03-25

Applicant: FUJIFILM Corporation

Inventor： Taro Asami ,  Toshiaki Katsuma ,  Toru Ito ,  Masato Kondo ,  Ryoko Otomo

IPC: G02B13/00 ,  G02B13/06

CPC classification number: G02B13/0015 ,  G02B13/0045 ,  G02B13/06

Abstract: An imaging lens substantially consists of six lenses of a negative first lens, a negative second lens, a positive third lens, a positive fourth lens, a negative fifth lens and a positive sixth lens in this order from an object side. An object-side surface of the second lens is concave, and an object-side surface of the third lens is concave. A predetermined conditional formula about a combined focal length of the fourth lens and the fifth lens is satisfied.

Abstract translation: 成像透镜基本上由物体侧依次由负的第一透镜，负的第二透镜，正的第三透镜，正的第四透镜，负的第五透镜和正的第六透镜的六个透镜组成。 第二透镜的物体侧表面是凹形的，并且第三透镜的物体侧表面是凹形的。 满足关于第四透镜和第五透镜的组合焦距的预定条件公式。

公开(公告)号：US09753256B2

公开(公告)日：2017-09-05

申请号：US14858419

申请日：2015-09-18

Applicant: FUJIFILM Corporation

Inventor： Taro Asami ,  Yu Kitahara

IPC: G02B13/18 ,  G02B9/62 ,  G02B13/00 ,  G02B27/00 ,  G02B13/04 ,  G02B15/177 ,  G02B9/00 ,  G02B3/04 ,  G02B5/00

CPC classification number: G02B13/0045 ,  G02B3/04 ,  G02B5/005 ,  G02B9/00 ,  G02B9/62 ,  G02B13/001 ,  G02B13/002 ,  G02B13/04 ,  G02B13/18 ,  G02B15/177 ,  G02B27/0025

Abstract: An imaging lens consists of, in order from the object side, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, and a positive sixth lens. The imaging lens satisfies the condition expressions below: f1/f

公开(公告)号：US09753248B2

公开(公告)日：2017-09-05

申请号：US14820587

申请日：2015-08-07

Applicant: FUJIFILM Corporation

Inventor： Taro Asami

IPC: G02B15/14 ,  G02B9/60 ,  G02B13/00 ,  G02B13/04 ,  G02B9/34 ,  G02B13/18

CPC classification number: G02B9/60 ,  G02B9/34 ,  G02B13/0015 ,  G02B13/04 ,  G02B13/18

Abstract: An imaging lens consists of five lenses of, in order from the object side, a negative first lens, a positive second lens, a negative third lens, a positive fourth lens, and a positive fifth lens. The following conditional expressions are satisfied: Nd3

公开(公告)号：US09201214B2

公开(公告)日：2015-12-01

申请号：US13887757

申请日：2013-05-06

Applicant: FUJIFILM Corporation

Inventor： Taro Asami ,  Masato Kondo

IPC: G02B9/08 ,  G02B13/00 ,  G02B13/04 ,  G02B13/06

CPC classification number: G02B13/0015 ,  G02B9/12 ,  G02B13/0035 ,  G02B13/04 ,  G02B13/06

Abstract: An imaging lens includes negative first lens having a concave image-side surface, positive second lens having a convex object-side surface in a paraxial region, an aperture stop, and positive third lens having a convex image-side surface in the paraxial region, which are arranged in this order from an object side. The Abbe numbers of materials constituting the first lens and the third lens for d-line are greater than or equal to 40. The Abbe number of a material constituting the second lens for d-line is less than or equal to 40. When the focal length of an entire system is f, and the center thickness of the second lens is D3, and the focal length of the first lens is f1, the following formulas (1′) and (2) are satisfied: 1.7

Abstract translation: 成像透镜包括具有凹形图像侧表面的负第一透镜，在近轴区域具有凸面物侧表面的正第二透镜，孔径光阑和在近轴区域具有凸像侧表面的正第三透镜， 它们从物体侧依次排列。 构成第一透镜的材料的阿贝数和d线的第三透镜的数量大于或等于40.构成第二透镜的材料的阿贝数小于或等于40.当焦点 整个系统的长度为f，第二透镜的中心厚度为D3，第一透镜的焦距为f1，满足下式（1'）和（2）：1.7