公开(公告)号：US20060274169A1

公开(公告)日：2006-12-07

申请号：US11503215

申请日：2006-08-14

Applicant: Masahito Watanabe ,  Toru Miyajima ,  Shinichi Mihara ,  Yuji Miyauchi ,  Toshihide Nozawa ,  Hisashi Goto

Inventor： Masahito Watanabe ,  Toru Miyajima ,  Shinichi Mihara ,  Yuji Miyauchi ,  Toshihide Nozawa ,  Hisashi Goto

IPC: H04N5/262

CPC classification number: H04N5/2254 ,  G02B15/177

Abstract: The invention makes a suitable selection from zoom modes and lens elements so thin that the thickness of each lens group can reduced, thereby slimming down a zoom lens with great thoroughness and, hence, an electronic image pickup system. The electronic image pickup system a zoom lens and an electronic image pickup device located on the image plane side of the zoom lens. The zoom lens comprises, in order from the object side, a first lens group G1 comprising two lens components and having generally negative power and a second lens group G2 comprising two lens components and having generally positive power. The focal length of the zoom lens can be varied by varying the air separation between the first lens group G1 and the second lens group G2. The zoom lens should satisfy at least one of conditions (a) to (n).

公开(公告)号：US07145730B2

公开(公告)日：2006-12-05

申请号：US11218591

申请日：2005-09-06

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G 1，具有负屈光力并在变焦期间移动的第二透镜组G 2，具有正折射力并在变焦期间移动的第三透镜组G 3和第四透镜组G 4 具有正折射力并在变焦和聚焦期间移动。 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G 4在变焦期间在与第三透镜组G 3的移动相反的轨迹上移动。

公开(公告)号：US07102830B2

公开(公告)日：2006-09-05

申请号：US10286848

申请日：2002-11-04

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/14

CPC classification number: H04N5/2254 ,  G02B15/177

Abstract: The invention has for its object to use a zoom system that comprises a reduced number of lens elements, is compact and simplified, and has high image-formation capability, thereby achieving thorough size reductions in video cameras or digital cameras. A zoom lens for use on an electronic imaging system comprises a negative first lens group G1, an aperture stop S, a positive second lens group G2 and a positive third lens group G3. Upon zooming from the wide-angle end to the telephoto end of the zoom lens, the second lens group G2 moves only toward the object side of the zoom lens and the third lens group G3 moves in a locus different from that of the second lens group G2. The second lens group G2 is made up of a positive first lens element having an aspheric surface on its object side, a negative second lens element, a positive third lens element and a negative fourth lens element. The first and second lens elements are cemented together, and the third lens group G3 moves independently for focusing. The second lens group G2 satisfies condition (1) with respect to the Abbe numbers of the third and fourth lens elements, condition (2) with respect to the shape of the third lens element, and condition (3) with respect to the composite focal length of the third and fourth lens elements.

Abstract translation: 本发明的目的是使用包括减少数量的透镜元件的缩放系统，其紧凑和简化，并且具有高的图像形成能力，从而实现了摄像机或数码相机的彻底的尺寸减小。 用于电子成像系统的变焦透镜包括负的第一透镜组G 1，孔径光阑S，正的第二透镜组G 2和正的第三透镜组G 3。 在从变焦镜头的广角端到远摄端放大时，第二透镜组G 2仅朝向变焦透镜的物体侧移动，并且第三透镜组G 3在与第二透镜组不同的轨迹上移动 镜头组G 2。 第二透镜组G 2由在其物体侧具有非球面的正的第一透镜元件，负的第二透镜元件，正的第三透镜元件和负的第四透镜元件构成。 第一和第二透镜元件被胶合在一起，并且第三透镜组G 3独立地移动以进行聚焦。 第二透镜组G 2相对于第三和第四透镜元件的阿贝数，条件（2）相对于第三透镜元件的形状满足条件（1），并且条件（3）相对于复合物 第三和第四透镜元件的焦距。

公开(公告)号：US20060126081A1

公开(公告)日：2006-06-15

申请号：US11260735

申请日：2005-10-27

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

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

IPC: G06K15/02

CPC classification number: H04N5/232 ,  G02B7/102 ,  H04N5/23296 ,  H04N5/2628

Abstract: An imaging apparatus has an imaging element which converts an optically formed image to an electrical signal by photoelectric conversion and acquires image data. The imaging apparatus comprises an optical magnification changing mechanism which optically changes a magnification of an image, and an electronic magnification change mechanism which reduces or expands a magnification with respect to image data by signal processing, and provides a magnification-changed image according to a predetermined magnification based on the optical magnification changing mechanism and the electronic magnification change mechanism. The optical magnification changing mechanism is configured so that a magnification is discrete and a focal position changes together with a focal distance. The electronic magnification change mechanism carries out an interpolation process such that the number of pixels is increased with respect to a predetermined region of read image data during an expanding process, and carried out a process for discretely sampling a wide region as compared with a readout region obtained by the sampling provided when no magnification conversion is made, during a reducing process, and converting the sampled region data to predetermined image data by a correcting process, thereby offsetting a change of the focal position in the optical magnification changing mechanism.

Abstract translation: 成像装置具有通过光电转换将光学形成的图像转换成电信号的摄像元件，并获取图像数据。 成像装置包括光学变化图像的倍率的光学倍率改变机构，以及通过信号处理来减小或扩大相对于图像数据的放大率的电子倍率改变机构，并且根据预定的图像数据提供放大率改变的图像 基于光学倍率变化机构和电子倍率变化机构的倍率。 光学倍率改变机构被配置为使得放大率离散并且焦点位置与焦距一起改变。 电子倍率变化机构执行插值处理，使得在扩展处理期间相对于读取图像数据的预定区域的像素数量增加，并且与读出区域相比进行用于离散采样宽区域的处理 通过在缩小处理期间不进行放大转换时提供的采样获得的采样区域数据，并通过校正处理将采样区域数据转换为预定图像数据，从而抵消光学倍率改变机构中焦点位置的变化。

公开(公告)号：US20050207024A1

公开(公告)日：2005-09-22

申请号：US11076236

申请日：2005-03-10

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/163 ,  G02B13/18 ,  G02B15/14 ,  G02B15/177 ,  H04N5/225 ,  H04N101/00

CPC classification number: G02B15/177

Abstract: A zoom lens includes, in order from the object side, the first lens unit consisting of one negative lens component in which a plurality of lens components are cemented to one another and the second lens unit including one negative lens component and having positive refracting power as a whole. In this case, the zoom lens satisfies the following condition: 0.15

Abstract translation: 变焦透镜从物体的顺序包括第一透镜单元，其由多个透镜部件彼此粘合的一个负透镜部件和包括一个负透镜部件并具有正折射能力的第二透镜单元组成 整个。 在这种情况下，变焦镜头满足以下条件：<？in-line-formula description =“In-line Formulas”end =“lead”？> 0.15 / fw < ？in-line-formula description =“In-line Formulas”end =“tail”？>其中t <1> 是第一透镜单元沿着光轴测量的厚度，而fw是 整个系统的焦距在变焦镜头的广角位置。

公开(公告)号：US20050073751A1

公开(公告)日：2005-04-07

申请号：US10692809

申请日：2003-10-27

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B15/20 ,  G02B13/18 ,  G02B15/177 ,  G02B15/14

CPC classification number: G02B15/177

Abstract: A zoom lens has, on the most object side, a first lens unit that has a prism with a reflecting surface for folding the path of rays, that has a negative refractive power in its entirety and that is fixed in a magnification change, and an aperture stop that is fixedly positioned in reference to the image pickup surface. The ray-entering surface of the prism has an aspherical surface concave toward the object side that exerts a weaker power for divergence at a position thereon farther from the optical axis. Whereby, a zoom lens with high optical specification performance and extremely thin size in depth direction is provided.

Abstract translation: 在最物体侧，变焦透镜具有第一透镜单元，该第一透镜单元具有棱镜，该棱镜具有用于折叠光线路径的反射面，其整体具有负折射力并且以倍率变化固定， 相对于图像拾取表面固定定位的孔径光阑。 棱镜的射线入射表面具有朝向物体侧凹陷的非球面，其在远离光轴的位置发挥较弱的发散功率。 因此，提供了具有高光学规格性能并且在深度方向上非常薄的尺寸的变焦镜头。

公开(公告)号：US06829101B2

公开(公告)日：2004-12-07

申请号：US10366426

申请日：2003-02-14

Applicant: Shinichi Mihara ,  Kouki Hozumi

Inventor： Shinichi Mihara ,  Kouki Hozumi

IPC: G02B1514

CPC classification number: G02B15/173

Abstract: The present invention relates to a digital still camera that is compatible with an increasing number of pixels and uses a zoom lens having a high zoom ratio yet compact, simple construction, wherein chromatic aberration of the zoom lens are reduced and the zoom lens is kept against the influences of chromatic aberrations. The zoom lens comprises a lens group G2 having negative refracting power and at least one lens group G3 located on the image side of G2 and having positive refracting power. Upon zooming, the spacing between the negative lens group G2 and the positive lens group G3 changes. The positive lens group G3 includes two doublet components, in each of which a positive lens element and a negative lens element are cemented together in order from the object side of G3. The doublet component located on the image side of G3 has a meniscus form concave on its image side.

Abstract translation: 本发明涉及一种与越来越多的像素兼容的数字静态照相机，并且使用具有高变焦比但是紧凑，简单结构的变焦镜头，其中变焦镜头的色差减小，并且变焦镜头被保持抵抗 色差的影响。 该变焦透镜包括具有负折射力的透镜组G2和位于G2的像侧的至少一个透镜组G3并具有正的折射光焦度。 变焦时，负透镜组G2与正透镜组G3之间的间隔变化。 正透镜组G3包括两个双重部件，其中正透镜元件和负透镜元件从G3的物体侧依次粘合在一起。 位于G3的图像侧的双重元件在其像侧具有弯月形凹陷。

公开(公告)号：US06825989B2

公开(公告)日：2004-11-30

申请号：US10441107

申请日：2003-05-20

Applicant: Tsutomu Uzawa ,  Shinichi Mihara ,  Yuko Kobayashi

Inventor： Tsutomu Uzawa ,  Shinichi Mihara ,  Yuko Kobayashi

IPC: G02B1514

CPC classification number: G02B15/173 ,  G02B15/17

Abstract: The invention relates to a zoom lens system which is compatible with a TTL optical finder having a diagonal field angle of at least 70° at the wide-angle end and about 7 to 10 magnifications and is fast as represented by an F-number of about 2.8 at the wide-angle end. The zoom lens system comprises a first lens group G1 which is movable along its optical axis during zooming and has positive refracting power, a second lens group G2 which moves toward the image side along the optical axis during zooming from the wide-angle end to the telephoto end and has negative refracting power and rear lens groups G3 to G6 having at least two spacings variable during zooming. In particular, the focal length f1 of the first lens group G1 should meet 6

Abstract translation: 本发明涉及一种变焦透镜系统，其与在广角端具有至少70°的对角场角和约7至10个放大倍数的TTL光学取景器兼容，并且如F-number of about 2.8在广角端。 变焦透镜系统包括：第一透镜组G1，其可在变焦期间沿着其光轴移动并且具有正折射力;第二透镜组G2，在从广角端到广角端的变焦期间沿着光轴朝向像侧移动; 长焦端并且具有负折射力和具有在变焦期间可变的至少两个间隔的后透镜组G3至G6。 特别地，第一透镜组G1的焦距f1应满足6

公开(公告)号：US06233097B1

公开(公告)日：2001-05-15

申请号：US09457766

申请日：1999-12-10

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B2714

CPC classification number: G02B17/02 ,  G02B23/14 ,  G03B13/06

Abstract: A secondary image formation type view finder comprising an objective optical system, a first mirror for folding an optical axis, a relay lens system and a second mirror for folding the optical axis, wherein an optical axis of the relay lens system is disposed so as to be included in a plane nearly perpendicular to an optical axis of the objective optical system, and the first mirror and the second mirror and disposed nearly in parallel with each other, thereby reducing a space to be occupied by the view finder.

Abstract translation: 一种二次图像形成型取景器，包括物镜光学系统，用于折叠光轴的第一反射镜，中继透镜系统和用于折叠光轴的第二反射镜，其中中继透镜系统的光轴设置成 被包括在几乎垂直于物镜光学系统的光轴的平面中，以及第一反射镜和第二反射镜并且彼此大致平行地设置，从而减少了取景器占据的空间。

公开(公告)号：US6057971A

公开(公告)日：2000-05-02

申请号：US129871

申请日：1998-08-06

Applicant: Shinichi Mihara

Inventor： Shinichi Mihara

IPC: G02B13/04 ,  G02B13/06 ,  G02B9/04

CPC classification number: G02B13/04 ,  G02B13/06

Abstract: The invention provides a compact and simple wide-angle lens system composed of a reduced number of lenses and having high productivity, which is well suited for use on digital cameras, while making sure of the space necessary for edge, and middle thicknesses, and constructing the system and, at the same time, having a given back focus and exit pupil position, and good-enough image-forming capability, and which comprises two lens groups or, in order from the object side thereof, a negative lens group GN and a positive lens group GP with an aperture stop D midway between them and a lens located nearest to the object side thereof being defined by a positive lens, said positive lens conforming three conditions in terms of focal length, shape factor, and making sure of sufficient edge thickness.

Abstract translation: 本发明提供了一种紧凑且简单的广角镜头系统，其由少量透镜组成并且具有高生产率，其非常适合用于数码相机，同时确保边缘和中间厚度所需的空间以及构造 并且同时具有给定的后焦点和出射光瞳位置以及足够好的图像形成能力，并且其包括两个透镜组，或者从物体侧起依次具有负透镜组GN和 正透镜组GP在其间中间具有孔径光阑D，最靠近物体侧的透镜由正透镜限定，所述正透镜在焦距，形状系数方面符合三个条件，并确保足够 边缘厚度。