公开(公告)号：US5313331A

公开(公告)日：1994-05-17

申请号：US17370

申请日：1993-02-12

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B13/18 ,  G02B15/16 ,  G02B15/173 ,  G02B15/14

CPC classification number: G02B13/18 ,  G02B15/173

Abstract: The present invention relates to a zoom lens system which comprises ten or less lenses, has a very short total length and a small front lens diameter, is reduced in size, weight and cost and has a large aperture ratio and a high zoom ratio. This zoom lens system comprises a zoom subsystem consisting of a first lens unit having a positive refracting power and a second lens unit having a negative refracting power and an image formation subsystem consisting of a third lens unit having a positive refracting power and remaining constantly fixed and a fourth lens unit having a positive refracting power and movable for zooming and focal position regulation and which has a zoom ratio of 8, a field angle of 1.4 and a very short total length including filters, as expressed by 9.7 f.sub.W at 54.degree., is reasonably and well balanced for various aberrations inclusive of spherical aberration, and has a very excellent capability of forming images by adopting some suitable means for the paraxial arrangement, actual lens configuration and arrangement of the image formation subsystem, applying aspherical configuration to a part thereof and taking some pertinent means for the positions of various optical filters.

Abstract translation: 本发明涉及一种变焦透镜系统，其包括十个或更少的透镜，具有非常短的总长度和小的前透镜直径，尺寸，重量和成本都降低，并且具有大的开口率和高变焦比。 该变焦透镜系统包括由具有正折射率的第一透镜单元和具有负折射率的第二透镜单元组成的变焦子系统和由具有正折射率并保持恒定固定的第三透镜单元构成的图像形成子系统， 第四透镜单元具有正折射率并且可移动以用于变焦和焦点位置调节，并且其变焦比为8，场角为1.4，包括滤波器的非常短的总长度，如54°时的9.7fW所示。 对包括球面像差在内的各种像差进行合理和均衡的平衡，并且通过采用用于近轴布置，图像形成子系统的实际透镜构造和布置的一些合适的方式，具有非常优异的形成图像的能力，将非球面形状施加到其一部分， 对各种滤光器的位置采取一些相关的手段。

公开(公告)号：US08472124B2

公开(公告)日：2013-06-25

申请号：US13068707

申请日：2011-05-18

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/14

CPC classification number: G02B15/173 ,  G03B19/14

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, a third lens group G3 having a positive refractive power, and a fourth lens group G4, and which includes maximum of five lens groups, and at the time of zooming from a wide angle end to a telephoto end, when a focal length of the overall image forming optical system is in a range of 1.2 fw to 1.8 fw, the first lens group G1 moves to be positioned more toward the object side than a position at the wide angle end, in a rectangular coordinate system in which, a horizontal axis is let to be νd(LA) and a vertical axis is let to be nd(LA), when a straight line expressed by nd(LA)=a×νd(LA)+b(LA)(provided that a=−0.0267) is set, the image forming optical system satisfies a predetermined conditional expression.

Abstract translation: 在从物体侧依次包括具有正折光力的第一透镜组G1，具有负折光力的第二透镜组G2，具有正折光力的第三透镜组G3和 第四透镜组G4，并且其包括最多五个透镜组，并且在从广角端到远摄端的变焦时，当整个图像形成光学系统的焦距在1.2fw至1.8的范围内时 在第一透镜组G1移动到比广角端处的位置更靠近物体侧的矩形坐标系中，在垂直坐标系中，使水平轴为nud（LA），并且使垂直轴为 为了nd（LA），当设置由nd（LA）= a×nud（LA）+ b（LA）表示的直线（条件是a = -0.0267）时，成像光学系统满足预定条件表达式 。

公开(公告)号：US08446512B2

公开(公告)日：2013-05-21

申请号：US13199726

申请日：2011-09-06

Applicant: Keisuke Ichikawa ,  Shinichi Mihara

Inventor： Keisuke Ichikawa ,  Shinichi Mihara

IPC: H04N5/225 ,  G02B15/14 ,  G02B13/02 ,  G02B7/28

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：US20110292252A1

公开(公告)日：2011-12-01

申请号：US13068736

申请日：2011-05-17

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: H04N5/262 ,  G02B15/14

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：US08018659B2

公开(公告)日：2011-09-13

申请号：US12925841

申请日：2010-10-28

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/14 ,  H04N5/262

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：US20110102660A1

公开(公告)日：2011-05-05

申请号：US12925753

申请日：2010-10-28

Applicant: Shinichi Mihara ,  Hisashi Goto ,  Masaki Arakawa ,  Toyoki Kon

Inventor： Shinichi Mihara ,  Hisashi Goto ,  Masaki Arakawa ,  Toyoki Kon

IPC: H04N5/225 ,  G02B9/04 ,  G02B15/14

CPC classification number: G02B15/177 ,  G02B13/18 ,  G02B27/0025

Abstract: A lens component of the present invention is made by cementing a lens LA and a lens LB having a refracting power smaller than a refracting power of the lens LA, and satisfies predetermined conditional expressions. Moreover, in an image forming optical system of the present invention which includes a lens group B having a negative refracting power, a lens group C having a positive refracting power and which moves only toward an object side at the time of zooming from a wide angle end to a telephoto end, and one or two more lens groups additionally, one of the lens components of the present invention is used in the lens group B.

Abstract translation: 本发明的透镜部件通过胶合具有小于透镜LA的折射力的折射率的透镜LA和透镜LB来制成，并且满足预定的条件表达式。 此外，在本发明的图像形成光学系统中，包括具有负折射力的透镜组B，具有正折射率的透镜组C，并且在从广角变焦时仅向物体侧移动 结束到远摄端，另外还有一个或两个透镜组，在透镜组B中使用本发明的一个透镜部件。

公开(公告)号：US07872806B2

公开(公告)日：2011-01-18

申请号：US12283106

申请日：2008-09-08

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

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：US07715108B2

公开(公告)日：2010-05-11

申请号：US11991905

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

CPC classification number: G02B15/173 ,  G02B5/04 ,  H04N1/00307 ,  H04N2101/00 ,  H04N2201/0084

Abstract: In an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the negative lens group is disposed at an image side of the of the aperture stop, the negative lens group has a cemented lens which is formed by cementing a plurality of lenses, and 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 are 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 (1), and a line when an upper limit value is in a range of the following conditional expression (1), and an area determined by following conditional expressions (2) and (3). 1.45

Abstract translation: 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，负透镜组设置在孔径光阑的像侧，负透镜组具有形成的胶合透镜 通过固定多个透镜，并且在垂直坐标系中，其中水平轴为Nd，纵轴为n = d，当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 （1），以及当上限值在以下条件表达式（1）的范围内时的行，以及由以下条件表达式（2）和（3）确定的面积。 1.45 <＆bgr <<2.15（1）1.30

公开(公告)号：US07602437B2

公开(公告)日：2009-10-13

申请号：US11583059

申请日：2006-10-19

Applicant: Shinichi Mihara ,  Hisashi Goto ,  Yuji Miyauchi ,  Toyoharu Hanzawa ,  Masahiro Imamura ,  Yuko Kobayashi ,  Tsutomu Uzawa ,  Toshihide Nozawa ,  Takuji Horie ,  Kouki Hozumi

Inventor： Shinichi Mihara ,  Hisashi Goto ,  Yuji Miyauchi ,  Toyoharu Hanzawa ,  Masahiro Imamura ,  Yuko Kobayashi ,  Tsutomu Uzawa ,  Toshihide Nozawa ,  Takuji Horie ,  Kouki Hozumi

IPC: H04N5/232 ,  H04N5/225

CPC classification number: H04N9/045 ,  G01J3/502 ,  G02B5/04 ,  G02B5/201 ,  G02B13/18 ,  G02B15/161 ,  G02B15/177 ,  G02B26/007 ,  G02B27/1013 ,  G02B27/141 ,  G02B27/144 ,  G02B27/145 ,  H04N5/2251 ,  H04N5/2351

Abstract: An optical system is presented that enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical system, an electronic image pickup device having three or more different spectral characteristics to obtain a color image, and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in determining the focal length in the image pickup system includes an optical element making use of a refraction phenomenon alone. The 400-nm wavelength input/output ratio is 10% or less with respect to an input-output ratio for a 400-nm to 800-nm wavelength at which an output signal strength ratio with respect to an input quantity of light is highest when the input quantity of light is defined by the quantity of a light beam emanating from the same object point and entering the image pickup optical system and the output signal strength is defined by the strength of a signal produced from the controller in response to the light beam.

Abstract translation: 本发明提出了一种使得各种自然科目的图像能够以其颜色良好再现的光学系统，并提供一种图像拾取系统，其至少包括摄像光学系统，具有三个或更多个不同的电子图像拾取装置 获得彩色图像的光谱特性，以及基于来自电子图像拾取装置的输出实现信号处理或图像处理的控制器。 参与确定图像拾取系统中的焦距的光学元件包括仅使用折射现象的光学元件。 相对于400nm至800nm波长的输入输出比，对于输入光量的输出信号强度比最高时，400nm波长输入/输出比为10％以下 光的输入量由从同一物体点发射并进入摄像光学系统的光束的量定义，并且输出信号强度由响应于光束的从控制器产生的信号的强度来定义 。

公开(公告)号：US07564497B2

公开(公告)日：2009-07-21

申请号：US11400199

申请日：2006-04-10

Applicant: Shinichi Mihara ,  Hisashi Goto ,  Yuji Miyauchi ,  Toyoharu Hanzawa ,  Masahiro Imamura ,  Yuko Kobayashi ,  Tsutomu Uzawa ,  Toshihide Nozawa ,  Takuji Horie ,  Kouki Hozumi

Inventor： Shinichi Mihara ,  Hisashi Goto ,  Yuji Miyauchi ,  Toyoharu Hanzawa ,  Masahiro Imamura ,  Yuko Kobayashi ,  Tsutomu Uzawa ,  Toshihide Nozawa ,  Takuji Horie ,  Kouki Hozumi

IPC: H04N5/232 ,  H04N5/225

CPC classification number: H04N9/045 ,  G01J3/502 ,  G02B5/04 ,  G02B5/201 ,  G02B13/18 ,  G02B15/161 ,  G02B15/177 ,  G02B26/007 ,  G02B27/1013 ,  G02B27/141 ,  G02B27/144 ,  G02B27/145 ,  H04N5/2251 ,  H04N5/2351

Abstract: An optical system enables images to be well reproduced with their colors, and provides an image pickup system including an image pickup optical system, an electronic image pickup device to obtain a color image and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in the determination of a focal length includes an optical element making use of a refraction phenomenon alone. The 400-nm wavelength input/output ratio is 10% or less with respect to an input-output ratio for a 400-nm to 800-nm wavelength at which an output signal strength ratio with respect to an input quantity of light is highest when the input quantity of light is defined by the quantity of a light beam emanating from the same object point and entering the image pickup optical system and the output signal strength is defined by the strength of a signal produced from the controller in response to the light beam.

Abstract translation: 一种光学系统使得能够以其颜色良好地再现图像，并且提供一种图像拾取系统，包括图像拾取光学系统，用于获得彩色图像的电子图像拾取装置和用于实现信号处理或图像处理的控制器，其基于 来自电子图像拾取装置的输出。 参与焦距的确定的光学元件包括仅使用折射现象的光学元件。 相对于400nm至800nm波长的输入输出比，对于输入光量的输出信号强度比最高时，400nm波长输入/输出比为10％以下 光的输入量由从同一物体点发射并进入摄像光学系统的光束的量定义，并且输出信号强度由响应于光束的从控制器产生的信号的强度来定义 。