公开(公告)号：US4887109A

公开(公告)日：1989-12-12

申请号：US199756

申请日：1988-05-27

申请人： Yoshihiro Fujita ,  Hiroshi Komatsuzaki ,  Masao Shoji ,  Yukio Noguchi ,  Masayoshi Hirai ,  Kazunori Ohno

发明人： Yoshihiro Fujita ,  Hiroshi Komatsuzaki ,  Masao Shoji ,  Yukio Noguchi ,  Masayoshi Hirai ,  Kazunori Ohno

IPC分类号： G02B7/10 ,  G02B23/14 ,  G03B13/12

CPC分类号： G02B7/10 ,  G03B13/12 ,  G02B23/145

摘要： A camera having a viewfinder and a taking lens changeable in focal length between at least two different focal lengths: a relatively short focal length suitable for wide-angle photography and a relatively long focal length suitable for telephotography and that allows close-up photography when the taking lens is changed to have the long focal length. The viewfinder has at least one movable lens which is axially moved and shifted away from the optical axis of the finder with respect to the axis of the taking lens when the taking lens is changed in focal length, to deflect the optical axis of the finder in order to cancel parallax error, depending on object distance.

摘要翻译： 具有取景器和拍摄镜头的照相机可以在至少两个不同焦距之间的焦距上变化：适用于广角摄影的相对较短的焦距和适用于远距摄影的相对较长的焦距，并且允许近距摄影 拍摄镜头更改为具有较长的焦距。 取景器具有至少一个可移动透镜，当透镜在焦距上改变时，可移动透镜相对于拍摄镜头的轴线轴向移动并远离取景器的光轴移动，以使取景器的光轴偏转 根据物体距离取消视差误差。

公开(公告)号：US08014077B2

公开(公告)日：2011-09-06

申请号：US12647245

申请日：2009-12-24

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： On condition that a first lens group adopts at least one plastic lens; a second lens group adopts at least any two adjacent plastic lenses; the first lens group monotonously moves from an object side to an image plane side in a zooming; the second lens group monotonously moves from the image plane side to the object side; wherein fw/fpi represents a ratio of refractive power of the entire system achieved at a wide angle end to refractive power of the respective lenses; P1 represents a total of fw/fpi of the plastic lenses of the first lens group; and P2 represents a total of fw/fpi of the plastic lenses of the second lens group, the following conditional expressions −0.22

摘要翻译： 在第一透镜组采用至少一个塑料透镜的条件下; 第二透镜组采用至少两个相邻的塑料透镜; 第一透镜组在变焦中从物体侧单调地移动到像面侧; 第二透镜组从图像平面侧单调地移动到物体侧; 其中fw / fpi表示在广角端实现的整个系统的屈光力与各个透镜的屈光力之比; P1表示第一透镜组的塑料透镜的fw / fpi的总和; P2表示第二透镜组的塑料透镜的fw / fpi的总和，满足以下条件式-0.22

公开(公告)号：US5745302A

公开(公告)日：1998-04-28

申请号：US829821

申请日：1997-03-25

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B15/17 ,  G02B23/14 ,  G03B13/02 ,  G02B15/14 ,  G02B17/08

CPC分类号： G03B13/02 ,  G02B15/17 ,  G02B23/14

摘要： An inverted Galilean zoom view finder equipped with a framing mark projection feature comprises in order from the object side to the image side a positive power objective lens L.sub.1 which is a by-convex singlet having a strong curvature of object side surface, a negative power lens L.sub.2 which is a by-concave singlet having a strong curvature of image side surface, and a negative power eye piece lens L.sub.3 which is a meniscus singlet having a strong curvature of concave surface at the object side. The negative power lens L.sub.2 is movable relative to both positive power objective lens L.sub.1 and negative power eye piece lens L.sub.3 along the optical axis X to vary the magnitude of the finder lens system, and the eye piece lens is formed with a reflective surface around a half transparent surface at the image side for reflecting back an image of framing mark and directing the image into the view of the zoom view finder.

摘要翻译： 具有框架标记投影特征的倒置的伽利略变焦取景器包括从物体侧到像侧的顺序为具有物体侧表面的强曲率的凸面单重态的正光焦度物镜L1，负光焦度透镜 L2，其是具有强烈的图像侧表面曲率的逐个凹陷的单线态，以及作为在物体侧具有强凹曲面的弯月形单线态的负功率眼镜片L3。 负功率透镜L2可以沿着光轴X相对于正功率物镜L1和负功率眼镜透镜L3移动，以改变取景器透镜系统的大小，并且眼片透镜形成有围绕 在图像侧的半透明表面反射成帧标记的图像并将图像引导到变焦取景器的视图中。

公开(公告)号：US5739965A

公开(公告)日：1998-04-14

申请号：US655901

申请日：1996-05-31

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B9/04 ,  G02B13/18 ,  G02B13/04

CPC分类号： G02B13/18 ,  G02B9/04

摘要： A wide angle lens comprises in order from the object end an aperture stop, a first meniscus lens .sub.L1 having a convex object end surface and a second positive power lens element L.sub.2, the lens satisfying the following conditions: -0.10

摘要翻译： 广角镜头从物体端开始依次具有孔径光阑，具有凸面物体端面的第一弯液面透镜L1和第二正光透镜元件L2，该透镜满足以下条件：-0.10

公开(公告)号：US5657167A

公开(公告)日：1997-08-12

申请号：US420343

申请日：1995-04-11

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B15/177 ,  G02B15/14 ,  G02B13/18

CPC分类号： G02B15/177

摘要： A lens system comprises a stationary negative power singlet and a positive power singlet which is changed between two specific axial positions so as to yield a short focal length suitable for wide angle photography and a long focal length suitable for a tele-photography, respectively, and satisfies the following condition:-2.0

摘要翻译： 透镜系统包括固定负功率单线态和正功率单线圈，其在两个特定轴向位置之间改变，以产生适合于广角摄影的短焦距和适合于远摄摄影的长焦距，以及 满足以下条件：-2.0

公开(公告)号：US5587844A

公开(公告)日：1996-12-24

申请号：US305433

申请日：1994-09-13

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G03B13/08 ,  G02B13/18 ,  G02B23/14 ,  G03B13/02

CPC分类号： G02B23/14

摘要： An Albada type inverted Galilean finder for a camera has an objective lens of negative power having a concave surface on a pupil side opposite an object side which is provided thereon with a half mirror coating and an eyepiece having a convex surface on the pupil side and a surface on the object side which is provided thereon with a framing marking defining an area for framing.

摘要翻译： 用于相机的Albada型反相Galilean取景器具有负光焦度的物镜，其在与物侧相对的光瞳侧上具有凹面，其上设置有半镜面和在瞳孔侧具有凸面的目镜， 物体侧上的表面，其上设置有限定用于框架的区域的框架标记。

公开(公告)号：US5502523A

公开(公告)日：1996-03-26

申请号：US303154

申请日：1994-09-08

申请人： Kazunori Ohno ,  Yasuhiko Tanaka

发明人： Kazunori Ohno ,  Yasuhiko Tanaka

IPC分类号： G03B13/04 ,  G02B23/14 ,  G03B13/06 ,  G03B13/02

CPC分类号： G03B13/06 ,  G02B23/14

摘要： An inverted Galilean finder incorporated in an automatic focusing camera has an optical system including an objective lens, an eyepiece and a transparent cover plate disposed in front of the objective lens for protecting the finder optical system from foreign particles. The cover plate is formed on its front surface with a framing marking for defining an exposure frame and a target marking which is directed toward an object to be focused when taking a picture and on its back surface with diopter adjustment lenses arranged correspondingly in position to the framing and target markings, respectively.

摘要翻译： 结合在自动聚焦照相机中的倒立伽利略探测器具有光学系统，其包括设置在物镜前面的物镜，目镜和透明盖板，用于保护取景器光学系统免受异物的影响。 盖板在其前表面上形成有用于限定曝光框架的框架标记和当拍摄照片时指向要聚焦的物体的目标标记，并且在其背面上具有相应地布置在位置上的屈光度调节透镜 框架和目标标记。

公开(公告)号：US5067803A

公开(公告)日：1991-11-26

申请号：US674889

申请日：1991-03-26

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B9/06 ,  G02B13/18

CPC分类号： G02B9/06 ,  G02B13/18

摘要： Described herein is a photographic wide angle lens which is composed of, from the object side thereof, a first lens of positive meniscus having a convex surface on the object side, and a second lens of positive meniscus having a concave surface on the object side, the wide angle lens having an aspheric surface at least on one of the four lens surfaces provided by the first and second lenses to improve astigmatism, spherical aberration and coma. The lens is also arranged to satisfy the condition of 0.85

摘要翻译： 这里描述的是一种摄影广角镜头，其从物体侧构成具有物体侧的凸面的正弯液面的第一透镜和在物体侧具有凹面的正弯月面的第二透镜， 所述广角透镜在由所述第一和第二透镜提供的四个透镜表面中的至少一个上具有非球面，以改善散光，球面像差和昏迷。 透镜也被设置为满足0.85

公开(公告)号：US06310732B1

公开(公告)日：2001-10-30

申请号：US09528435

申请日：2000-03-17

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B1514

CPC分类号： G02B15/177 ,  G02B23/145

摘要： A small-size, inexpensive, simple power-variable finder comprises, successively from the object side, a negative first lens group G1, a positive second lens group G2, and a negative third lens group G3. As the second lens group G2 is moved along the optical axis X, zooming is carried out. Field masks M1 to M3 are disposed at predetermined positions. The finder satisfies the following conditional expressions (1) to (3): −1.3

摘要翻译： 一个小尺寸，便宜，简单的功率可变取景器从物体侧连续地包括负的第一透镜组G1，正的第二透镜组G2和负的第三透镜组G3。 随着第二透镜组G2沿着光轴X移动，进行变焦。 场掩模M1至M3设置在预定位置。 取景器满足以下条件表达式（1）至（3）：其中fi是第i个透镜组的焦距，DT是在第一透镜组中最靠近物体的表面之间的光轴上的距离 G1和第三透镜组G3中最靠近眼睛的表面。

公开(公告)号：US6028713A

公开(公告)日：2000-02-22

申请号：US24263

申请日：1998-02-17

申请人： Kazunori Ohno

发明人： Kazunori Ohno

IPC分类号： G02B9/12 ,  G02B13/02 ,  G02B13/18 ,  G02B21/02

CPC分类号： G02B13/0035 ,  G02B13/02 ,  G02B9/12

摘要： A compact lens has a front lens group of positive refractive power and a rear lens group of negative refractive power. The front lens group is composed of, in order from a photographic object side, a negative lens element and a biconvex lens element having a surface of stronger curvature on the object side. Overall symmetry with respect to the rear lens group is achieved by using a negative meniscus lens element with its concave surface on the object side for the negative lens element in the front lens group. The rear lens group is composed of a negative meniscus lens element L.sub.3 with its concave surface on the object side. This provides a compact overall lens structure of the so-called telephoto type having only three lens elements, making it possible to boost optical performance while being inexpensive. In addition, by satisfying certain conditional equations, it is possible to establish a good balance between the imaging performance at perimeter field angles and the compactness of the lens system as a whole.

摘要翻译： 紧凑型透镜具有正折光力的前透镜组和负折光力的后透镜组。 该前透镜组按照从摄影对象的顺序构成在物体侧具有较强曲率表面的负透镜元件和双凸透镜元件。 通过在前透镜组中使用负弯月形透镜元件，其凹面在物体侧用于负透镜元件，实现了对后透镜组的整体对称性。 后透镜组由在物体侧具有凹面的负弯月形透镜元件L3组成。 这提供了仅具有三个透镜元件的所谓长焦型的紧凑的整体透镜结构，使得可以在低成本的情况下提高光学性能。 此外，通过满足某些条件方程，可以在周边场角的成像性能和整个透镜系统的紧凑性之间建立良好的平衡。