公开(公告)号：US07848030B2

公开(公告)日：2010-12-07

申请号：US11991904

申请日：2006-09-11

申请人： Shinichi Mihara ,  Kanato Adachi ,  Keisuke Ichikawa ,  Yasunobu Iga ,  Koji Matsumoto ,  Kazuaki Murayama ,  Keigo Matsuo ,  Hideki Nagata

发明人： Shinichi Mihara ,  Kanato Adachi ,  Keisuke Ichikawa ,  Yasunobu Iga ,  Koji Matsumoto ,  Kazuaki Murayama ,  Keigo Matsuo ,  Hideki Nagata

IPC分类号： G02B15/14 ,  G02B9/04

CPC分类号： G02B15/161 ,  G02B5/005

摘要： In an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group being disposed at an image-plane side of the aperture stop and having a cemented lens, and when a straight line indicated by Nd=α×νd+β (where, α=−0.017) is set, Nd and νd of at least one lens forming the cemented lens are included in both an area which is determined by a line when a lower limit value is in a range of a following conditional expression (1), and a line when an upper limit value is in a range of the following conditional expression (1), and in an area determined by following conditional expressions (2) and (3) 1.45

摘要翻译： 在具有正透镜组，负透镜组和孔径光阑的图像形成光学系统中，正透镜组设置在孔径光阑的像平面侧并且具有胶合透镜，并且当指示直线时 通过Nd =α×＆ngr; d +＆bgr; （其中，α= -0.017），形成胶合透镜的至少一个透镜的Nd和＆ngr; d包括在下限值在以下条件的范围内由线确定的区域 表示（1），以及当上限值在以下条件表达式（1）的范围内的行，并且在由以下条件表达式（2）和（3）确定的区域中：1.45 <＆bgr; <2.15（1 ）1.30

公开(公告)号：US07830613B2

公开(公告)日：2010-11-09

申请号：US12456460

申请日：2009-06-16

申请人： Keisuke Ichikawa

发明人： Keisuke Ichikawa

IPC分类号： G02B5/14

CPC分类号： G02B15/173

摘要： The first lens group comprises a positive lens and a negative lens, and the total number of lenses in the first lens group is 2. The second lens group consists of, in order from the object side, a front unit of negative refracting power and a rear unit of positive refracting power. The third lens group consists of, in order from the object side, a front unit of positive refracting power and a rear unit of negative refracting power. The fourth lens group comprises a positive lens component, and the total number of lens components in the fourth lens group is 1. The front unit of the second lens group comprises a negative lens component, and the total number of lens components in the front unit of the second lens group is 1. The rear unit of the second lens group comprises, in order from the object side to the image side, a negative lens and a positive lens, and the total number of lenses in the rear unit of the second lens group is 2. The negative lens component in the front unit of the second lens group and the negative lens in the rear unit of the second lens group satisfy the following condition (1A): 2.9

摘要翻译： 第一透镜组包括正透镜和负透镜，并且第一透镜组中的透镜的总数为2.第二透镜组从物体侧起依次包括负折射率的前单元和 后方单位的正折射力。 第三透镜组从物体侧依次包括正折射率的前单元和负折射光的后单元。 第四透镜组包括正透镜部件，第四透镜组中的透镜部件的总数为1.第二透镜组的前单元包括负透镜部件，并且前单元中的透镜部件的总数 第二透镜组的后部单元从物体侧到像侧依次包括负透镜和正透镜，并且第二透镜组的后单元中的透镜总数 透镜组为2.第二透镜组的前单元中的负透镜组件和第二透镜组的后单元中的负透镜满足以下条件（1A）：2.9

公开(公告)号：US07535652B2

公开(公告)日：2009-05-19

申请号：US11726536

申请日：2007-03-21

申请人： Keisuke Ichikawa ,  Shinichi Mihara

发明人： Keisuke Ichikawa ,  Shinichi Mihara

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom optical system has, in order from the object side, a first lens unit with negative refracting power, including one biconcave-shaped lens component, a second lens unit with positive refracting power, a third lens unit with negative refracting power, and a fourth lens unit with positive refracting power. When the magnification of the zoom optical system is changed, relative distances between individual lens units are varied and the zoom optical system satisfies the following condition: 0.2≦dCD/fw≦1.2 where dCD is spacing between the third lens unit and the fourth lens unit on the optical axis in infinite focusing at a wide-angle position and fw is the focal length of the entire system of the zoom optical system at the wide-angle position.

摘要翻译： 变焦光学系统按照从物体侧开始具有负折射率的第一透镜单元，包括一个双凹透镜组件，具有正折射力的第二透镜单元，具有负折射光焦度的第三透镜单元，以及 具有正折射力的第四透镜单元。 当变焦光学系统的放大倍数变化时，各个透镜单元之间的相对距离变化，并且变焦光学系统满足以下条件：<？in-line-formula description =“In-line Formula”end =“lead”？ > 0.2 <= dCD / fw <= 1.2 <？in-line-formula description =“In-line Formulas”end =“tail”？>其中dCD是光轴上第三透镜单元与第四透镜单元之间的间距 在广角位置处无限聚焦，fw是变焦光学系统在广角位置的整个系统的焦距。

公开(公告)号：US20090086039A1

公开(公告)日：2009-04-02

申请号：US11904410

申请日：2007-09-27

申请人： Hisashi Goto ,  Manabu Yoshii ,  Keisuke Ichikawa

发明人： Hisashi Goto ,  Manabu Yoshii ,  Keisuke Ichikawa

IPC分类号： H04N5/228

CPC分类号： G03B17/12 ,  G02B7/025 ,  G02B7/028 ,  G02B9/02

摘要： A compound lens on which a plastic lens is formed on a glass lens, having: an annular step part which is formed on the end part of the optical functional surface, on which the plastic lens is formed, on the outer circumference side on the outside of the outermost diameter of the optical functional surface and which is formed for directly mounting on a resin-made lens tube frame; and a caulk-fix part, being formed, in a form of a chamfer, in the outer form part of the glass lens on the optical functional surface on the opposite side of the optical functional surface on which the plastic lens is formed, wherein an influence of a heat on the plastic lens is eliminated when fixing the glass lens onto the resin-made lens tube frame by means of thermal caulking.

摘要翻译： 一种在玻璃透镜上形成塑料透镜的复合透镜，具有：形成在其上形成有塑料透镜的光学功能表面的端部上的环状台阶部，在外侧的外周侧 光学功能表面的最外径，其直接安装在树脂制透镜管框上; 以及在形成有塑料透镜的光学功能表面的相对侧上的光学功能表面的玻璃透镜的外部形式中形成为倒角形式的铆接固定部，其中， 通过热铆接将玻璃透镜固定在树脂制透镜管框架上时，消除了对塑料透镜的热影响。

公开(公告)号：US20090067061A1

公开(公告)日：2009-03-12

申请号：US12215204

申请日：2008-06-24

申请人： Kenji Ono ,  Keisuke Ichikawa ,  Fumikazu Kanetaka

发明人： Kenji Ono ,  Keisuke Ichikawa ,  Fumikazu Kanetaka

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： The invention relates to a zoom lens and an imaging apparatus incorporating the same. More particularly, the invention is concerned with a zoom lens that is downsized for use with imaging apparatus inclusive of video cameras and digital cameras. The zoom lens comprises a positive first group G1, a negative lens group G2, a positive third group G3, a positive fourth group G4 and an aperture stop S. At least the first group G1 and the second group G2 move for zooming from the wide-angle end to the telephoto end. The first group G1, the third group G3 and the aperture stop S are positioned more on the object side in a state of the telephoto end than in a state of the wide-angle end. The spacing sandwiched between the first group G1 and the second group G2 grows wide, the spacing sandwiched between the second group G2 and the third group G3 becomes narrows, and the spacing sandwiched between the third group G3 and the fourth lens group G4 grows wide. The first group G1 comprises one positive lens and one negative lens, the second group G2 comprises one positive lens and two negative lenses, the third group G3 comprises, in order from the object side, a double-convex positive lens convex on both object- and image-side surfaces and a negative meniscus lens convex on the object-side surface and concave on the image-side surface, and the fourth group G4 comprises on positive lens.

摘要翻译： 本发明涉及一种变焦镜头及其结合的成像装置。 更具体地，本发明涉及一种缩小尺寸以用于包括摄像机和数码相机的成像设备的变焦镜头。 变焦透镜包括正的第一组G1，负透镜组G2，正三组G3，正四组G4和孔径光阑S.至少第一组G1和第二组G2移动用于从宽 到远摄端。 第一组G1，第三组G3和孔径光阑S在远摄端的状态下比在广角端的状态更靠近物体侧。 夹在第一组G1和第二组G2之间的间隔变宽，夹在第二组G2和第三组G3之间的间隔变窄，并且夹在第三组G3和第四透镜组G4之间的间隔变宽。 第一组G1包括一个正透镜和一个负透镜，第二组G2包括一个正透镜和两个负透镜，第三组G3从物体侧依次包括双凸正透镜， 以及在物体侧表面上凸出的图像侧表面和负弯月形透镜，并且在图像侧表面上凹入，并且第四组G4包括在正透镜上。

公开(公告)号：US08599491B2

公开(公告)日：2013-12-03

申请号：US13200089

申请日：2011-09-15

申请人： Toyoki Kon ,  Keisuke Ichikawa

发明人： Toyoki Kon ,  Keisuke Ichikawa

IPC分类号： G02B15/14 ,  G02B9/62

CPC分类号： G02B15/173

摘要： The zoom lens of the invention comprises, in order from an object side thereof, a first lens group having positive refracting power, a second lens group having negative refracting power, a third lens group having positive refracting power, a fourth lens group having positive refracting power, a fifth lens group having negative refracting power, and a sixth lens group having positive refracting power. The first lens group includes a reflective optical element, and the lens component in, and on the most image side of, the fourth lens group has negative refracting power.

摘要翻译： 本发明的变焦透镜从物体侧依次包括具有正折射率的第一透镜组，具有负折射力的第二透镜组，具有正折射率的第三透镜组，具有正折射率的第四透镜组 具有负折射力的第五透镜组和具有正折射率的第六透镜组。 第一透镜组包括反射光学元件，并且第四透镜组的透镜分量在第四透镜组的最大像侧具有负折射光焦度。

公开(公告)号：US08520135B2

公开(公告)日：2013-08-27

申请号：US12930501

申请日：2011-01-06

申请人： Shinichi Mihara ,  Masahito Ohashi ,  Keisuke Ichikawa

发明人： Shinichi Mihara ,  Masahito Ohashi ,  Keisuke Ichikawa

IPC分类号： H04N5/225

CPC分类号： G02B15/173

摘要： A zoom optical system having a lens group I including two single lenses or one lens component, an aperture stop, and a lens group A disposed between the lens group I and the aperture stop, including a lens component made up of a positive lens LA and a negative lens LB that are cemented together, and having a negative refracting power as a whole. The distance between the lens group I and the lens group A on the optical axis changes for zooming, and the lens component has an aspheric cemented surface. When the shape of the aspheric surface is expressed by a certain equation, the shape of the air-contact surface of the positive lens LA and its aspheric components etc. satisfy conditional expressions (3a) and (3b).

摘要翻译： 具有透镜组I的变焦光学系统，包括设置在透镜组I和孔径光阑之间的两个单透镜或一个透镜部件，孔径光阑和透镜组A，包括由正透镜LA和 胶合在一起的负透镜LB，整体上具有负的折射力。 透镜组I和光轴上的透镜组A之间的距离发生变化，并且透镜组件具有非球面胶合表面。 当非球面的形状由一定方程表示时，正透镜LA的空气接触表面的形状及其非球面分量等满足条件表达式（3a）和（3b）。

公开(公告)号：US08184376B2

公开(公告)日：2012-05-22

申请号：US12384405

申请日：2009-04-03

申请人： Keisuke Ichikawa

发明人： Keisuke Ichikawa

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens includes, in order from the object side, a negative lens unit, a positive lens unit and a positive lens unit. During zooming from the object side, the second lens unit moves, the distance between the first lens unit and the second lens unit decreases, the distance between the second lens unit and the third lens unit increases. The second lens unit has two lens components including, in order from the object side, a positive front lens component and a rear lens component. The third lens unit is composes of two lens components including, in order from the object side, a front lens component and a positive rear lens component. An aperture stop is disposed closer to the image side than the first lens unit and closer to the object side than the rear lens component in the second lens unit, and the aperture stop moves integrally with the second lens unit along the optical axis direction during zooming from the wide angle end to the telephoto end.

摘要翻译： 变焦透镜从物体侧依次包括负透镜单元，正透镜单元和正透镜单元。 在从对象侧变焦时，第二透镜单元移动，第一透镜单元与第二透镜单元之间的距离减小，第二透镜单元与第三透镜单元之间的距离增加。 第二透镜单元具有两个透镜部件，从物体侧依次包括正的前透镜部件和后透镜部件。 第三透镜单元由两个透镜部件组成，其中从物体侧依次包括前透镜部件和正后透镜部件。 孔径光阑设置为比第一透镜单元更靠近图像侧并且比第二透镜单元中的后透镜部件更靠近物体侧，并且孔径光阑在变焦期间沿着光轴方向与第二透镜单元一体地移动 从广角端到长焦端。

公开(公告)号：US20120057068A1

公开(公告)日：2012-03-08

申请号：US13199726

申请日：2011-09-06

申请人： Keisuke Ichikawa ,  Shinichi Mihara

发明人： Keisuke Ichikawa ,  Shinichi Mihara

IPC分类号： H04N5/232 ,  G02B15/14

CPC分类号： G02B15/177 ,  G02B13/22 ,  H04N5/2254 ,  H04N5/23296

摘要： An optical system includes, in order from its object side a negative first lens unit, a positive second lens unit, a negative third lens unit, and a positive fourth lens unit. The air gaps between the lens units are variable during zooming. The first lens unit includes one positive lens, the second lens unit includes one negative lens, the third lens unit consists of one or two lens components, and the fourth lens unit consists of one lens component, where the term “lens component” refers to a single lens or a cemented lens. The system satisfies the condition “0

摘要翻译： 光学系统从其物体侧依次包括负的第一透镜单元，正的第二透镜单元，负的第三透镜单元和正的第四透镜单元。 透镜单元之间的气隙在变焦期间是可变的。 第一透镜单元包括一个正透镜，第二透镜单元包括一个负透镜，第三透镜​​单元由一个或两个透镜部件组成，第四透镜单元由一个透镜部件组成，其中术语“透镜部件”指的是 单个透镜或胶合透镜。 该系统满足条件“0

公开(公告)号：US20110102625A1

公开(公告)日：2011-05-05

申请号：US12974848

申请日：2010-12-21

申请人： Shinichi Mihara ,  Kanato Adachi ,  Keisuke Ichikawa ,  Yasunobu Iga ,  Koji Matsumoto ,  Kazuaki Murayama ,  Keigo Matsuo ,  Hideki Nagata

发明人： Shinichi Mihara ,  Kanato Adachi ,  Keisuke Ichikawa ,  Yasunobu Iga ,  Koji Matsumoto ,  Kazuaki Murayama ,  Keigo Matsuo ,  Hideki Nagata

IPC分类号： H04N5/228 ,  G02B9/10 ,  G02B15/14

CPC分类号： G02B13/18 ,  G02B15/173 ,  G03B17/17

摘要： An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop, the positive lens group has a cemented lens which is formed by cementing a plurality of lenses, in a rectangular coordinate system in which a horizontal axis is let to be Nd and a vertical axis is let to be νd, when a straight line indicated by Nd=α×νd+β (where, α=−0.017) is set, Nd and νd of at least one lens forming the cemented lens is included in both of areas namely, an area which is determined by a line when a lower limit value is in a range of a following conditional expression (1a), and a line when an upper limit value is in a range of the following conditional expression (1a), and of an area determined by following conditional expressions (2a) and (3a). 1.45

摘要翻译： 根据本发明的图像形成光学系统的特征在于，在具有正透镜组，负透镜组和孔径光阑的图像形成光学系统中，正透镜组设置在孔的物体侧 停止时，正透镜组具有通过固定多个透镜而形成的胶合透镜，在垂直坐标系中，使水平轴为Nd，纵轴为垂直轴为d 线表示为Nd =α×＆ngr; d +＆bgr; （其中，α= -0.017），形成胶合透镜的至少一个透镜的Nd和＆ngr; d包括在两个区域中，即当下限值在一个范围内时由线确定的区域 （1a），以及当上限值在以下条件表达式（1a）的范围内时的行以及由以下条件表达式（2a）和（3a）确定的面积的行。 1.45 <＆bgr <2.15（1a）1.30