公开(公告)号：US4457595A

公开(公告)日：1984-07-03

申请号：US401949

申请日：1982-07-26

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B9/14 ,  G02B9/64 ,  G02B13/02 ,  G02B13/24

CPC classification number: G02B13/24 ,  G02B13/02 ,  G02B9/14

Abstract: A large relative aperture telephoto lens system comprising a first converging lens group consisting of four positive, positive, negative and positive lens components, a diverging lens group consisting of two negative cemented doublets, and a second converging lens group consisting of a positive lens component and a cemented doublet composed of a negative lens element and a positive lens element.Said lens system is so adapted as to perform focusing and correction of aberrations by displacing the two negative lens components in said diverging lens group and said second lens group as a whole independently along the optical axis while changing relative airspaces, maintains high performance within a range from infinity to short distances and assures high operability for focusing.

Abstract translation: 一种大的相对孔径长焦透镜系统，包括由四个正，正，负和正透镜分量组成的第一会聚透镜组，由两个负的胶合双面组成的发散透镜组和由正透镜组件组成的第二会聚透镜组， 由负透镜元件和正透镜元件组成的胶合双面胶。 所述透镜系统适于通过在所述发散透镜组和所述第二透镜组中独立地沿着光轴移动两个负透镜组件，同时改变相对空间而进行像差的聚焦和校正，将高性能保持在一定范围内 从无穷远到短距离，并确保高可操作性的聚焦。

公开(公告)号：US08446678B2

公开(公告)日：2013-05-21

申请号：US12931480

申请日：2011-02-02

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/14 ,  G02B15/15

CPC classification number: G02B15/173 ,  G02B13/18

Abstract: To provide an image forming optical system that can achieve good correction of chromatic aberration, which is seriously needed particularly when the zoom ratio is high, while achieving slimness and a high zoom ratio and to provide an electronic image pickup apparatus equipped with such an image forming optical system, an image forming optical system has a lens group A including a lens component made up of a positive lens LA and a negative lens LB cemented together and having a negative refracting power as a whole. The lens group A is arranged between a lens group I closest to the object side and an aperture stop. The distance between the lens group I and the lens group A changes for zooming. The lens component has an aspheric cemented surface, and a certain condition concerning the shape of the aspheric surface is satisfied.

Abstract translation: 为了提供能够实现色像差的良好校正的图像形成光学系统，特别是当变焦比高时，特别是在实现纤度和高变焦比的同时，提供了一种配备有这种图像形成的电子摄像装置 光学系统中，成像光学系统具有透镜组A，透镜组A包括由正透镜LA和负透镜LB组成的透镜组件，该透镜组件整体上具有负的折射光焦度。 透镜组A布置在最靠近物体侧的透镜组I和孔径光阑之间。 透镜组I与透镜组A之间的距离发生变化。 透镜部件具有非球面胶合表面，并且满足关于非球面形状的一定条件。

公开(公告)号：US08446511B2

公开(公告)日：2013-05-21

申请号：US13068736

申请日：2011-05-17

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: H04N5/225 ,  G02B15/14 ,  G02B9/34

CPC classification number: G02B15/173 ,  G02B13/009

Abstract: In an image forming optical system which includes in order from an object side, a first lens group G1 having a positive refractive power, a second lens group G2 having a negative refractive power, an aperture stop, a third lens group G3 having a positive refractive power, and a fourth lens group G4 having a negative refractive power, and in which, at the time of zooming, air distances between lens groups are variable, and an air lens nearest to an image side in the third lens group G3 has a shape of a convex lens, the fourth lens group G4 includes one lens component, and is movable even at the time of focusing, and satisfies the following conditional expressions 0.5

Abstract translation: 在从物体侧依次包括具有正折光力的第一透镜组G1，具有负屈光力的第二透镜组G2，孔径光阑，具有正折射率的第三透镜组G3的图像形成光学系统中 功率和具有负屈光力的第四透镜组G4，并且其中在变焦时，透镜组之间的空气距离是可变的，并且最靠近第三透镜组G3中的像侧的空气透镜具有形状 第四透镜组G4包括一个透镜分量，并且即使在聚焦时也是可移动的，并且满足以下条件表达式0.5 <（R4F + R4R）/（R4F-R4R）<8.0（1） - 12.0 <（R4LAF + R4LAR）/（R4LAF-R4LAR）< - 2.0（2）。

公开(公告)号：US08165463B2

公开(公告)日：2012-04-24

申请号：US11731365

申请日：2007-03-29

Applicant: Keisuke Ichikawa ,  Shinichi Mihara

Inventor： Keisuke Ichikawa ,  Shinichi Mihara

IPC: G03B17/00

CPC classification number: G02B15/177

Abstract: An electronic imaging apparatus has a zoom optical system in which the most object-side lens unit A includes one biconcave-shaped negative lens component, each of air-contact-surfaces of which is configured as an aspherical surface, and when the magnification of the zoom optical system is changed in the range from a wide-angle position to a telephoto position, the lens unit A is moved back and forth along the optical axis in such a way that the lens unit A is initially moved toward the image side, and an electronic imaging unit that has an electronic image sensor so that image data picked up by the electronic image sensor are electrically processed and can be output as image data whose format is changed. In this case, in nearly infinite object point focusing, the zoom optical system satisfies the following condition: 0.7

Abstract translation: 电子成像装置具有变焦光学系统，其中最物体侧透镜单元A包括一个双凹面形的负透镜部件，其每个空气接触表面被构造为非球面，并且当放大倍数 变焦光学系统在从广角位置到望远位置的范围内变化，透镜单元A沿着光轴前后移动，使得透镜单元A最初朝向像侧移动，并且 具有电子图像传感器的电子成像单元，使得由电子图像传感器拾取的图像数据被电处理并且可以被输出为其格式改变的图像数据。 在这种情况下，在近乎无限的物点聚焦中，变焦光学系统满足以下条件：0.7

公开(公告)号：US08085477B2

公开(公告)日：2011-12-27

申请号：US12653045

申请日：2009-12-07

Applicant: Shinichi Mihara ,  Kanato Adachi

Inventor： Shinichi Mihara ,  Kanato Adachi

IPC: G02B15/14

CPC classification number: G02B15/177

Abstract: It is preferable that for an image forming optical system a basic structure which includes a first lens group having a negative refracting power, which is made of one cemented lens component, a second lens group having a positive refracting power, a third lens group having a positive refracting power, which is made of one lens component, and is movable for focusing, and a fourth lens group which is made of one lens component having an aspheric surface, and at the time of zooming from a wide angle end to a telephoto end, the second lens group moves only toward the object side, and the first lens group and the third lens group move while following a trajectory of movement different from a trajectory of movement of the second lens group is adopted, and that the image forming optical system satisfies predetermined conditional expressions.

Abstract translation: 优选的是，对于图像形成光学系统，包括由一个胶合透镜部件制成的具有负折射率的第一透镜组的基本结构，具有正折射率的第二透镜组，具有正折射率的第三透镜组， 由一个透镜部件制成并且可移动以进行聚焦的正折射力，以及由具有非球面的一个透镜部件制成的第四透镜组，以及从广角端到望远端的变焦时 第二透镜组仅朝向物体侧移动，并且第一透镜组和第三透镜组沿着与第二透镜组的移动轨迹不同的运动轨迹移动，并且图像形成光学系统 满足预定条件表达式。

公开(公告)号：US20110102639A1

公开(公告)日：2011-05-05

申请号：US12930501

申请日：2011-01-06

Applicant: Shinichi Mihara ,  Masahito Ohashi ,  Keisuke Ichikawa

Inventor： Shinichi Mihara ,  Masahito Ohashi ,  Keisuke Ichikawa

IPC: G02B15/14 ,  H04N5/262

CPC classification number: G02B15/173

Abstract: 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).

Abstract translation: 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：US07898743B2

公开(公告)日：2011-03-01

申请号：US11991919

申请日：2006-09-11

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

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

IPC: G02B15/14 ,  G02B9/00

CPC classification number: G02B13/18 ,  G02B15/173 ,  G03B17/17

Abstract: 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

Abstract translation: 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

公开(公告)号：US20110043664A1

公开(公告)日：2011-02-24

申请号：US12925841

申请日：2010-10-28

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: H04N5/262 ,  G02B15/14

CPC classification number: G02B15/177

Abstract: An image forming optical system comprising, in order from the object side: a first lens group G1 that is fixed during zooming and includes a reflecting optical element for bending an optical path; a second lens group G2 having a negative refracting power and movable during zooming; a third lens group G3 having a positive refracting power; a fourth lens group G4 having a positive refracting power; and a rearmost lens group GR, wherein during zooming from the wide angle end to the telephoto end, the third lens group G3 moves on the optical axis toward the object side, characterized in that the rearmost lens group GR satisfies the following condition: 0.95

Abstract translation: 一种图像形成光学系统，其从物体侧依次包括：在变焦期间固定的第一透镜组G1，并且包括用于弯曲光路的反射光学元件; 第二透镜组G2具有负折射力并且可在变焦期间移动; 具有正折射率的第三透镜组G3; 具有正折射率的第四透镜组G4; 和最后面的透镜组GR，其中在从广角端到远摄端的变焦期间，第三透镜​​组G3在光轴上朝物体侧移动，其特征在于，最后的透镜组GR满足以下条件：0.95 < ＆bgr; Rw <2.5（1-1）。

公开(公告)号：US07872807B2

公开(公告)日：2011-01-18

申请号：US12080674

申请日：2008-04-04

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/14

CPC classification number: G02B15/173 ,  G02B5/04

Abstract: A zoom lens with an easily bendable optical path has high optical specification performance such as a high zoom ratio, a wide-angle arrangement, a small F-number and reduced aberrations. It includes a first lens group G1 remaining fixed during zooming, a second lens group G2 having negative refracting power and moving during zooming, a third lens group G3 having positive refracting power and moving during zooming, and a fourth lens group G4 having positive refracting power and moving during zooming and focusing. The first lens group comprises, in order from an object side thereof, a negative meniscus lens component convex on an object side thereof, a reflecting optical element for bending an optical path and a positive lens. Upon focusing on an infinite object point, the fourth lens group G4 moves in a locus opposite to that of movement of the third lens group G3 during zooming.

Abstract translation: 具有易弯曲光路的变焦透镜具有高的光学规格性能，例如高变焦比，广角排列，小F数和减小的像差。 它包括在变焦期间保持固定的第一透镜组G1，具有负折射力并在变焦期间移动的第二透镜组G2，具有正折射力并在变焦期间移动的第三透镜组G3和具有正折射力的第四透镜组G4 并在变焦和对焦期间移动。 第一透镜组从物体侧依次包括在其物体侧凸出的负弯月形透镜部件，用于弯曲光路的反射光学元件和正透镜。 在聚焦于无限物体点时，第四透镜组G4在变焦期间在与第三透镜组G3的移动相反的轨迹上移动。

公开(公告)号：US07848575B2

公开(公告)日：2010-12-07

申请号：US11245609

申请日：2005-10-06

Applicant: Nobuyuki Watanabe ,  Hiroyuki Minakata ,  Shinichi Mihara ,  Fumiyuki Shiratani ,  Noriyuki Iyama

Inventor： Nobuyuki Watanabe ,  Hiroyuki Minakata ,  Shinichi Mihara ,  Fumiyuki Shiratani ,  Noriyuki Iyama

IPC: G06K9/46 ,  G06K9/66 ,  G06K9/32 ,  H04N5/262

CPC classification number: H04N5/2628 ,  G02B7/102 ,  H04N5/23296 ,  H04N2209/045

Abstract: An imaging apparatus has the function of an optical zoom which optically converts the magnification of an image and the function of an electronic zoom which changes the size of an image by electrical signal processing. The function of the electronic zoom at least operates when the optical zoom is not set at the telephoto end. A total magnification is determined by changing magnification by the optical zoom and changing magnification by the electronic zoom. A pixel count s1 of an electronic imaging device, a pixel count s2 of a rectangle including the pixels on an imaging device which are used by the electronic zoom, and a pixel count s3 of an output satisfy s1≧s2>s3 or s1>s2≧s3.

Abstract translation: 成像装置具有光学变焦的功能，该光学变焦光学地转换图像的放大率和通过电信号处理改变图像的尺寸的电子变焦的功能。 当远摄端未设置光学变焦时，电子变焦的功能至少起作用。 通过用光学变焦改变放大倍率并通过电子变焦来改变放大倍数来确定总放大率。 电子成像装置的像素数s1，包括由电子变焦使用的成像装置上的像素的矩形的像素数s2和输出的像素数s3满足s1≥s2> s3或s1> s2 ≧s3。