公开(公告)号：EP3101462B1

公开(公告)日：2018-08-15

申请号：EP16172808.4

申请日：2016-06-03

申请人： Canon Kabushiki Kaisha

发明人： INOMOTO, Yu

IPC分类号： G02B13/06 ,  G02B13/16 ,  G02B15/177 ,  G02B13/18

CPC分类号： G02B15/177 ,  G02B13/06 ,  G02B13/16 ,  G02B13/18 ,  H04N5/23238

摘要： A zoom lens includes: a first lens unit having a negative refractive power; and a rear group having a positive refractive power, in which, when a focal length of the zoom lens is a shortest focal length, a maximum image height is lower than a half of a diagonal length of an image pickup region, and when a focal length of the zoom lens at which the maximum image height becomes a half of the diagonal length of the image pickup region is defined as an intermediate focal length, a focal length of the zoom lens at a longest focal length, a half angle of field of the zoom lens at the longest focal length, and other such factors are appropriately set so that the maximum image height is increased continuously from the shortest focal length to the intermediate focal length.

公开(公告)号：EP3339932A1

公开(公告)日：2018-06-27

申请号：EP17207943.6

申请日：2017-12-18

申请人： Thales

发明人： COUMERT, Bruno ,  MANEVAL, Florence

IPC分类号： G02B15/14 ,  G02B15/177 ,  G02B27/00

CPC分类号： G02B15/14 ,  G02B15/177 ,  G02B27/0012 ,  G02B27/0025

摘要： Le domaine général de l'invention est celui des zooms optiques comportant une pupille mobile (P M ) se déplaçant selon une loi de déplacement. Le zoom (Z2) selon l'invention comporte quatre groupes de lentilles successifs, le premier (21) et le quatrième groupes (24) étant fixes, le second (22) et le troisième groupe (23) étant mobiles et disposés entre le premier et le quatrième groupe, le second groupe étant un groupe convergent et le troisième groupe étant un groupe divergent. Dans une première variante, le diamètre de la pupille mobile varie selon une loi de variation, fonction de la loi de déplacement de ladite pupille mobile. Dans une seconde variante, le zoom optique comporte une lucarne mobile, ladite lucarne mobile se déplaçant selon une seconde loi de déplacement, le diamètre de cette lucarne variant selon une seconde loi de variation, fonction de la seconde loi de déplacement de ladite lucarne mobile.

公开(公告)号：EP3125012A4

公开(公告)日：2018-03-07

申请号：EP15770419

申请日：2015-03-26

申请人： NIPPON KOGAKU KK

发明人： KIMURA YOKO

IPC分类号： G02B15/177 ,  G02B27/64

CPC分类号： G02B15/177 ,  G02B5/005 ,  G02B27/0025 ,  G02B27/646

摘要： The art has, disposed in order from an object, a first lens group (G1) having negative refractive power, a second lens group (G2) having positive refractive power, a third lens group (G3) having negative refractive power, and a fourth lens group (G4) having positive refractive power, in which zooming is made by varying air distances between the lens groups, respectively, the first lens group (G1) has, on a side closest to the object, a negative meniscus lens (L11) having a convex surface facing the object, at least a part of the first to fourth lens groups (G1 to G4) is provided to be movable, as a vibration-proof lens group for correcting an image blur, so as to have a component in a direction perpendicular to an optical axis, the fourth lens group (G4) has at least four lenses, and the following conditional expression (1) is satisfied: 0.20

公开(公告)号：EP2287648A3

公开(公告)日：2017-12-06

申请号：EP10171595.1

申请日：2010-08-02

申请人： Canon Kabushiki Kaisha

发明人： MAEDA, Yuuki

IPC分类号： G02B13/04 ,  G02B13/16 ,  G02B15/177 ,  G02B27/00

CPC分类号： G02B13/04 ,  G02B13/16 ,  G02B15/177 ,  G02B27/0062

摘要： An optical system includes, in order from an enlargement conjugate side to a reduction conjugate side via a largest air gap, a front unit (Lf) having a negative power, and a rear unit (Lb) having positive power. The optical system satisfies 1.75 n1 n1 -(0.6438-0.001682×νd n1 ) n1 /F| n1 represents a focal length of a negative lens (L18) in the front unit, Nd n1 represents a refractive index of a material of the negative lens, νd n1 represents an Abbe number of the material of the negative lens, θgF n1 represents a partial dispersion ratio of the material of the negative lens, and F represents a focal length of the optical system.

摘要翻译： 光学系统按照从放大共轭侧经过最大气隙到缩小共轭侧的顺序包括具有负光焦度的前单元（Lf）和具有正光焦度的后单元（Lb）。 该光学系统满足1.75

公开(公告)号：EP3242151A1

公开(公告)日：2017-11-08

申请号：EP17176080.4

申请日：2007-02-12

申请人： Nikon Corporation

发明人： YAMAMOTO, Hiroshi

IPC分类号： G02B15/177

CPC分类号： G02B15/177 ,  G02B13/04

摘要： Providing a retrofocus lens system and an image-taking device having small variation in aberrations upon focusing on a close object with a high imaging magnification. The retrofocus lens system includes, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having negative refractive power, and a third lens group G3 having positive refractive power. Upon focusing from infinity to a close object, the first lens group G1, the second lens group G2, and the third lens group G3 are moved to the object such that a distance between the first lens group G1 and the second lens group G2 increases, and a distance between the second lens group G2 and the third lens group G3 decreases.

摘要翻译： 提供在聚焦于具有高成像放大率的近物体时具有小像差变化的反焦镜头系统和摄像装置。 逆向聚焦透镜系统按照从物体的次序包括具有负折射光焦度的第一透镜组G1，具有负折射光焦度的第二透镜组G2和具有正折射光焦度的第三透镜组G3。 当从无穷远聚焦到近物时，第一透镜组G1，第二透镜组G2和第三透镜组G3移动到物体，使得第一透镜组G1和第二透镜组G2之间的距离增大， 并且第二透镜组G2和第三透镜组G3之间的距离减小。

公开(公告)号：EP2902832B1

公开(公告)日：2016-08-24

申请号：EP15156349.1

申请日：2013-12-19

申请人： Ricoh Imaging Company, Ltd.

发明人： Saori, Masakazu

IPC分类号： G02B15/177 ,  G02B27/64

CPC分类号： G02B15/177 ,  G02B15/14 ,  G02B27/646

公开(公告)号：EP2009478B1

公开(公告)日：2016-08-10

申请号：EP08252182.4

申请日：2008-06-25

申请人： Nikon Corporation

发明人： Yamamoto, Hiroshi c/o Nikon Corportion, Intel. Prop. Headquarters ,  Ito, Tomoki c/o Nikon Corportion, Intel. Prop. Headquarters ,  Suzuki, Takeshi c/o Nikon Corportion, Intel. Prop. Headquarters

IPC分类号： G02B15/177 ,  G02B27/64

CPC分类号： G02B15/177 ,  G02B27/646

摘要： The zoom lens includes, in order from the object, a first lens group (G1) having negative refractive power, a second lens group (G2) having positive refractive power, and a third lens group (G3) having negative refractive power. Upon zooming from wide-angle end (W) to telephoto end (T), each distance between adjacent lens groups is varied. The second lens group (G2) includes, in order from the object, a front group (G2a) having positive refractive power, and a rear group (G2b). Focusing on the object is carried out by moving the front group (G2a) along the optical axis. The zoom lens further fulfils two sets of inequalities: (1) 1,2

公开(公告)号：EP3037858A1

公开(公告)日：2016-06-29

申请号：EP14838726.9

申请日：2014-08-19

申请人： OLYMPUS CORPORATION

发明人： KATAKURA, Masahiro

IPC分类号： G02B13/00 ,  G02B23/26

CPC分类号： G02B23/243 ,  G02B9/12 ,  G02B15/173 ,  G02B15/177 ,  G02B23/2438

摘要： This endoscope objective optical system is capable of acquiring images of high resolution and wide angle of observation field, maintaining low invasiveness and appropriately correcting various aberrations. This optical system has at least a first cemented lens which has a positive lens and a negative lens, in which the cemented lens satisfies the following conditional expressions. 15.0 vA − ndA 15.75 − 0.2 > rdyA 1 / ih > − 20 νA is an Abbe number of the negative lens, ndA is a refractive index of the negative lens at the d-line, rdyA1 is a curvature radius of a joining surface of the negative lens, and ih is an image height.

摘要翻译： 该内窥镜物镜光学系统能够获得高分辨率和广角的观察视野的图像，保持低侵入性并适当地校正各种像差。 该光学系统至少具有第一胶合透镜，其具有正透镜和负透镜，其中胶合透镜满足以下条件表达式。 15.0 rdyA1 / ih> -20νA是负透镜的阿贝数，ndA是负透镜在d线处的折射率，rdyA1是接合面的曲率半径 负透镜，ih是图像高度。

公开(公告)号：EP2902832A1

公开(公告)日：2015-08-05

申请号：EP15156349.1

申请日：2013-12-19

申请人： Ricoh Imaging Company, Ltd.

发明人： Saori, Masakazu

IPC分类号： G02B15/177 ,  G02B27/64

CPC分类号： G02B15/177 ,  G02B15/14 ,  G02B27/646

摘要： Zoom lens of the retrofocus type comprising a negative first lens-group (G1), a positive second lens-group (G2), a negative third lens-group (G3) and a positive fourth lens-group (G4), in that order from the object side, wherein upon zooming from the short focal-length to the long focal-length, the distance between said first (G1) and said second lens-group (G2) decreases, the distance between said second (G2) and said third lens-group (G3) increases and the distance between said third (G3) and said fourth lens- group (G4) decreases, wherein said second lens-group (G2) consists of a positive first sub-lens-group (G2a), a positive second sub-lens-group (G2b) and a third sub-lens-group (G2c), in that order from the object side, and wherein said third sub-lens-group (G2c) is a cemented doublet consisting of a negative meniscus lens (24) having a convex surface facing the object side and a positive meniscus lens (25) having a convex surface facing the object side, in that order from the object side.

摘要翻译： 按照该顺序包括负第一透镜组（G1），正第二透镜组（G2），负第三透镜组（G3）和正第四透镜组（G4）的反焦型变焦透镜 从物侧开始，其中在从短焦距变焦到长焦距时，所述第一（G1）和所述第二透镜组（G2）之间的距离减小，所述第二（G2）和所述第二 第三透镜组（G3）增加并且所述第三透镜组（G3）与所述第四透镜组（G4）之间的距离减小，其中所述第二透镜组（G2）包括正的第一子透镜组（G2a） ，正第二子透镜组（G2b）和第三子透镜组（G2c），并且其中所述第三子透镜组（G2c）是由以下组成的接合双合透镜： 具有面向物体侧的凸表面的负弯月形透镜（24）和具有面向物体侧的凸表面的正弯月形透镜（25），从ob 目标侧。

公开(公告)号：EP2840428A1

公开(公告)日：2015-02-25

申请号：EP14181589.4

申请日：2014-08-20

申请人： Konica Minolta, Inc.

发明人： Masui, Atsuo

IPC分类号： G02B15/177 ,  G02B13/18

CPC分类号： G02B15/177 ,  G02B9/34 ,  G02B13/18

摘要： In a zoom lens, at least a first group of negative optical power and a second group of positive optical power are included from an object side, when zooming is performed from a wide-angle end to a telephoto end, a distance between the first and the second groups is reduced and an aperture is moved together with the second group. The first group is formed with a front group composed of only negative lenses and a rear group which is composed of two lenses, a positive and a negative from the object side and which has a positive optical power as a whole and the zoom lens satisfies a conditional formula: 0.06

摘要翻译： 在变焦透镜中，当从广角端到远摄端进行变焦时，物体侧至少包括第一组负光焦度和第二组正光焦度，第一和第二组之间的距离 第二组被减小并且孔与第二组一起移动。 第一组形成有仅由负透镜组成的前组和由从物体侧起的正和负两个并且整个具有正光焦度的两个透镜构成的后组，并且变焦透镜满足 条件公式：0.06