公开(公告)号：US4969721A

公开(公告)日：1990-11-13

申请号：US403394

申请日：1989-09-06

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/173

CPC classification number: G02B15/173

Abstract: A compact zoom lens system having a field angle on the order of 48.degree. at the wide position thereof, vari-focal ratios of 3 to 6, aperture ratios of F/1.4 to F/2.8 and a long back focal length. Said zoom lens system comprises, in the order from the object side, a first lens unit having positive refractive power, a second lens unit movable for varying focal length and having negative refractive power, a third lens unit movable along the optical axis for varying focal length and having positive refractive power, and a fourth lens unit always kept fixing and having positive refractive power, the second lens unit and the third lens unit consisting of four or a smaller number of lens elements in total.

Abstract translation: 一种紧凑型变焦透镜系统，在宽的位置具有48°的场角，3至6的可变焦比，F / 1.4至F / 2.8的开口率和较长的后焦距。 所述变焦透镜系统按照物体侧的顺序包括具有正屈光力的第一透镜单元，可移动以改变焦距并具有负折光力的第二透镜单元，可沿着光轴移动以改变焦点的第三透镜单元 并且具有正的屈光力，并且第四透镜单元总是保持固定并具有正的折光力，第二透镜单元和第三透镜单元总共由四个或更少数量的透镜元件组成。

公开(公告)号：US4527868A

公开(公告)日：1985-07-09

申请号：US623548

申请日：1984-06-25

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B13/02

CPC classification number: G02B13/02

Abstract: A high performance large aperture ratio telephoto lens system having a focal length of 200 mm to 300 mm, aperture ratio of 1:2.0 and low telephoto ratio and comprising a first converging lens group, a diverging lens group and a second converging lens group; said first converging lens group consisting of three positive, positive and negative lens components, said diverging lens group consisting of three lens components, i.e., a positive meniscus lens component, a negative meniscus lens component and a negative cemented doublet, and said second converging lens group comprising at least a cemented doublet consisting of a negative element and a positive element.

Abstract translation: 焦距为200mm〜300mm，开口率为1：2.0，望远镜低的高性能大孔径比长焦镜头系统，包括第一会聚透镜组，发散透镜组和第二会聚透镜组; 所述第一会聚透镜组由三个正，负透镜和负透镜组成，所述发散透镜组由三个透镜组件组成，即正弯月透镜组件，负弯月透镜组件和负胶合双面组件，以及所述第二会聚透镜 至少包括由负性元素和正性元素组成的胶合双峰。

公开(公告)号：US4483597A

公开(公告)日：1984-11-20

申请号：US401950

申请日：1982-07-26

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

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

CPC classification number: G02B13/02 ,  G02B9/14

Abstract: A high-performance large aperture ratio telephoto lens system comprising a first lens group having positive refractive power, a second lens group having negative refractive power and a third lens unit having positive refractive power, the large aperture ratio telephoto lens system being arranged to fulfill the conditions shown below and to have the focal length about 200 mm to 300 mm and F number about F2.(1) 0.4f

Abstract translation: 一种具有正屈光力的第一透镜组，具有负屈光力的第二透镜组和具有正屈光力的第三透镜单元的高性能大孔径比长焦透镜系统，大孔径倍率远摄透镜系统被配置成满足 条件如下所示，焦距约为200mm至300mm，F数约为F2。 （1）0.4f

公开(公告)号：US4478497A

公开(公告)日：1984-10-23

申请号：US440859

申请日：1982-11-12

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/12 ,  G02B9/64 ,  G02B15/02

CPC classification number: G02B15/12

Abstract: An attachment lens system arranged to be used by attaching on the image side of a master lens system and comprising a front lens group and a rear lens group wherein the front lens group comprises first and second lens components and the rear lens group comprises a third lens component, the first lens component being a cemented doublet consisting of a negative meniscus lens and a biconvex lens and having positive refractive power, the second lens component being a biconcave lens, the third lens component comprising two lens elements, i.e., a biconvex lens and a biconcave lens, the attachment lens system enabling to use it in combination with a large aperture ratio telephoto lens system of F/2.0 class and having favorably corrected Petzval's sum, spherical aberration, coma and so forth.

Abstract translation: 一种附着透镜系统，被配置为通过安装在主透镜系统的像侧并且包括前透镜组和后透镜组来使用，其中前透镜组包括第一和第二透镜部件，并且后透镜组包括第三透镜 所述第一透镜部件是由负弯月形透镜和双凸透镜组成并具有正折射力的胶合双面镜，所述第二透镜部件是双凹透镜，所述第三透镜部件包括两个透镜元件，即双凸透镜和 一个双凹透镜，该附加透镜系统能够与F / 2.0级的大孔径比长焦镜头系统结合使用，并具有良好校正的佩兹瓦尔和，球面像差，彗差等。

公开(公告)号：US08885262B2

公开(公告)日：2014-11-11

申请号：US13311314

申请日：2011-12-05

Applicant: Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B15/14 ,  G02B17/00 ,  G02B13/00

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

Abstract translation: 本发明涉及一种电子摄像系统，其深度尺寸极大地降低，利用可以克服施加在变焦可移动透镜组的移动的条件的光学系统类型，同时保持高规格和性能。 电子摄像系统包括：光路弯曲变焦光学系统，其从物体侧依次包括第一透镜组G1-1，其包括负透镜组和用于弯曲光路的反射光学元件P， 包括一个正透镜的第1-2透镜组G1-2和具有正折射光焦度的第二透镜组G2。 为了从广角端到望远端的放大，第二透镜组G2仅向物体侧移动。 电子摄像系统还包括位于变焦光学系统的像侧的电子摄像装置I。

公开(公告)号：US08730587B2

公开(公告)日：2014-05-20

申请号：US13488579

申请日：2012-06-05

Applicant: Ryu Ota ,  Shinichi Mihara

Inventor： Ryu Ota ,  Shinichi Mihara

IPC: G02B15/14

CPC classification number: G02B15/173

Abstract: A zoom lens includes in order from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive, and a last lens group having a positive refractive index, and at the time of zooming from the wide angle end to the telephoto end, the first lens group is fixed, the second lens group moves toward a side of an image plane, the third lens group is fixed, and the fourth lens group moves, and at the time of focusing, the fourth lens group moves. The zoom lens satisfies the following conditional expression (101) 0.20

Abstract translation: 变焦透镜从物体侧依次包括具有正折光力的第一透镜组，具有负折射光焦度的第二透镜组，具有正折光力的第三透镜组，具有正折光力的第四透镜组， 以及具有正折射率的最后一个透镜组，并且在从广角端到望远端的变焦时，第一透镜组被固定，第二透镜组朝向图像平面侧移动，第三透镜 组固定，第四透镜组移动，并且在聚焦时第四透镜组移动。 变焦透镜满足以下条件式（101）0.20

公开(公告)号：US08520135B2

公开(公告)日：2013-08-27

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: H04N5/225

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：US20120057068A1

公开(公告)日：2012-03-08

申请号：US13199726

申请日：2011-09-06

Applicant: Keisuke Ichikawa ,  Shinichi Mihara

Inventor： Keisuke Ichikawa ,  Shinichi Mihara

IPC: H04N5/232 ,  G02B15/14

CPC classification number: G02B15/177 ,  G02B13/22 ,  H04N5/2254 ,  H04N5/23296

Abstract: 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

Abstract translation: 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：US08094381B2

公开(公告)日：2012-01-10

申请号：US12964162

申请日：2010-12-09

Applicant: Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B15/14 ,  G03B5/02

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement, of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

Abstract translation: 本发明涉及一种在保持高规格和性能的同时利用可以克服施加在移动上的条件的光学系统类型的深度尺寸极大地减小的电子摄像系统。 电子摄像系统包括：光路弯曲变焦光学系统，其从物体侧依次包括第一透镜组G1-1，其包括负透镜组和用于弯曲光路的反射光学元件P， 包括一个正透镜的第1-2透镜组G1-2和具有正折射光焦度的第二透镜组G2。 为了从广角端到望远端的放大，第二透镜组G2仅向物体侧移动。 电子摄像系统还包括位于变焦光学系统的像侧的电子摄像装置I。

公开(公告)号：US20110267705A1

公开(公告)日：2011-11-03

申请号：US12928910

申请日：2010-12-21

Applicant: Shinichi Mihara ,  Kanato Adachi

Inventor： Shinichi Mihara ,  Kanato Adachi

IPC: G02B15/14 ,  G02B9/10

CPC classification number: G02B15/142

Abstract: An image forming optical system has a positive lens group disposed closer to its object side than an aperture stop, and the values of θgF1 and other constants of at least one lens LA included in the positive lens group fall within three ranges including a range bounded by the straight lines given by the equation θgF1=α1×νd1+βgF1 (where α1=−0.00566) into which the lowest and highest values in the range given by a first conditional expression are substituted respectively, a range bounded by the straight lines given by the equation nd1=a1×νd1+b1 (where a1=−0.0267) into which the lowest and highest values in the range given by a second conditional expression are substituted respectively, and a range defined by a third conditional expression.

Abstract translation: 图像形成光学系统具有比孔径光阑更靠近物体侧设置的正透镜组，并且包括在正透镜组中的至少一个透镜LA的亮度，gF1和其他常数的值在三个范围内，包括范围 由等式＆thetas给出的直线界定; gF1 =α1×＆ngr; d1 +＆bgr; gF1（其中α1= -0.00566），由第一条件表达式给出的范围内的最低和最高值分别代入其中， 由第二条件表达式给出的范围内的最低和最高值分别代入由方程nd1 = a1×＆ngr; d1 + b1（其中a1 = -0.0267）给出的直线所界定的范围，并且定义范围 通过第三条件表达式。