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公开(公告)号：US4652091A
公开(公告)日：1987-03-24
申请号：US752139
申请日：1985-07-03
申请人： Kouji Oizumi , Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama
发明人： Kouji Oizumi , Yasuhisa Sato , Yasuyuki Yamada , Hiroki Nakayama
IPC分类号： G02B15/16 , G02B15/173 , G02B15/20 , G02B15/14
CPC分类号： G02B15/173
摘要： A compact zoom lens is constructed with, from front to rear, first, second and third lens units of positive, negative and positive refractive powers, respectively. A diaphragm is positioned in or adjacent the second lens unit. The second lens unit and the diaphragm are stationary. When zooming from the wide angle end to the telephoto end, the first and third lens units are axially moved in such a manner that each of the separations between the first and second lens units and between the second and third lens units is increased monotonically.
摘要翻译： 分别从前到后构造具有正，负和正屈光力的第一，第二和第三透镜单元的紧凑变焦透镜。 隔膜位于第二透镜单元中或邻近第二透镜单元。 第二透镜单元和隔膜是静止的。 当从广角端到望远端放大时，第一透镜单元和第三透镜单元以这样的方式轴向移动，使得第一和第二透镜单元之间以及第二和第三透镜单元之间的每个分离单调增加。
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公开(公告)号：US4643536A
公开(公告)日：1987-02-17
申请号：US750699
申请日：1985-06-28
申请人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
发明人： Yasuyuki Yamada , Yasuhisa Sato , Hiroki Nakayama , Kouji Oizumi
CPC分类号： G02B15/02
摘要： A conversion lens upon attachment on the image side of a master lens increases the focal length of the entire system. The conversion lens comprises three components of negative, positive and negative powers in this order from the front, has a negative power as a whole, and satisfies the following conditions:2.0 0.15where fi and ni are the focal length and the refractive index of the glass of the i-th component counting from the front respectively.
摘要翻译： 安装在主镜头的像侧上的转换镜头增加了整个系统的焦距。 转换透镜从前方按顺序具有负，负和负功率的三个分量，整体具有负功率，满足以下条件：2.0
0.15其中fi和ni分别是从前面计数的第i个分量的焦距和玻璃的折射率。 -
公开(公告)号：US5305148A
公开(公告)日：1994-04-19
申请号：US3668
申请日：1993-01-12
申请人： Keiji Ikemori , Kouji Oizumi , Yoshinori Itoh
发明人： Keiji Ikemori , Kouji Oizumi , Yoshinori Itoh
CPC分类号： G02B9/12 , G02B15/177
摘要： A varifocal lens is disclosed, comprising, from front to rear, a first lens unit of negative power, a second lens unit of positive power, and a third lens unit of negative power, all these lenses being moved along a common optical axis when the focal length of the entire lens system varies, wherein all the lens units each are constructed with either one lens, or two lenses, the total number of lenses being limited to 3 or 4, while still maintaining good optical performance.
摘要翻译： 公开了一种变焦透镜，包括从前到后的负功率的第一透镜单元，正光焦度的第二透镜单元和负光焦度的第三透镜单元，当所述透镜沿着共同的光轴移动时， 整个透镜系统的焦距变化，其中所有透镜单元均由一个透镜或两个透镜构成，透镜的总数被限制为3或4，同时仍然保持良好的光学性能。
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公开(公告)号：US5125735A
公开(公告)日：1992-06-30
申请号：US558430
申请日：1990-07-27
申请人： Kouji Oizumi , Takashi Matsushita
发明人： Kouji Oizumi , Takashi Matsushita
CPC分类号： G01S7/4811 , G01C3/085 , G01S17/46 , G01S17/87 , G02B7/32 , G01S7/4814
摘要： A distance measuring device has a light source for emitting a plurality of light beams in a plurality of directions, and a light receiving lens having a plurality of optical axes for receiving the plurality of light beams reflected from objects in said plurality of directions. Light receiving apparatus is provided for receiving the reflected light beams passing through said light receiving lens and providing an output corresponding to distances to the object. The light receiving lens has (1) a central portion with a thickness (D), a focal length f.sub.a, and a refractive index .phi..sub.A, and (2) a second portion adjacent said central portion. Surfaces of said central and second portions closest to said light receiving apparatus comprising one spherical surface having a refractive power .phi..sub.R. the central and second portions being disposed to satisfy the following conditions:0.4 0.
摘要翻译： 距离测量装置具有用于沿多个方向发射多个光束的光源和具有多个光轴的光接收透镜，用于接收从所述多个方向上的物体反射的多个光束。 光接收装置被设置用于接收通过所述光接收透镜的反射光束并提供对应于到物体的距离的输出。 光接收透镜具有（1）具有厚度（D），焦距fa和折射率phi A的中心部分，以及（2）与所述中心部分相邻的第二部分。 最靠近所述光接收装置的所述中心部分和第二部分的表面包括具有折射光焦度的一个球形表面。中心部分和第二部分被设置成满足以下条件：0.4
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公开(公告)号：US4957356A
公开(公告)日：1990-09-18
申请号：US180451
申请日：1988-04-12
申请人： Kouji Oizumi , Takashi Matsushita
发明人： Kouji Oizumi , Takashi Matsushita
CPC分类号： G02B17/045 , G02B23/14 , G03B13/06 , G03B2213/025
摘要： A finder device capable of forming an erecting non-reverse image to be observed at either of the waist level and the eye level, wherein when used as the waist-level finder, the photographer, while taking his eye at a good distance from the finder, can observe the image of an object to be photographed.
摘要翻译： 能够形成要在腰部水平和眼睛水平中任一个观察到的竖立非反转图像的取景器装置，其中当用作腰围取景器时，摄影者在与取景器距离较远的距离 ，可以观察要拍摄的物体的图像。
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公开(公告)号：US5253005A
公开(公告)日：1993-10-12
申请号：US806786
申请日：1991-12-12
摘要： A small-sized camera in which while the light emerging from a photographic lens having an optical axis parallel with a photosensitive plane is conducted by first and second mirrors to the photosensitive plane to form a photographic system, the first or second mirror is turned around a predetermined axis to conduct the light to an eyepiece lens to form a finder system. And, a structure of construction for efficiently removing the stray light of this camera is disclosed.
摘要翻译： 一种小型照相机，其中当从具有与光敏平面平行的光轴的摄影镜头出射的光由第一和第二反射镜传导到感光平面以形成照相系统时，第一或第二镜转向 预定轴线将光线导向目镜，以形成取景器系统。 并且，公开了一种用于有效地去除该照相机的杂散光的结构的结构。
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公开(公告)号：US5270857A
公开(公告)日：1993-12-14
申请号：US261231
申请日：1988-10-24
申请人： Kouji Oizumi , Nozomu Kitagishi , Shoichi Yamzaki
发明人： Kouji Oizumi , Nozomu Kitagishi , Shoichi Yamzaki
IPC分类号： G02B27/64
CPC分类号： G02B27/646
摘要： An image stabilizing system includes a photographic lens device having a plurality of lens units, wherein for zooming at least one lens unit separation varies, a detecting circuit for detecting the jiggle of the system, and a drive device for driving at least one lens unit in a direction perpendicular to a photographic optical axis of the photographic lens device on the basis of an output of the detecting circuit to stabilize an image.
摘要翻译： 一种图像稳定系统包括具有多个透镜单元的摄影透镜装置，其中，用于变焦的至少一个透镜单元分离变化，用于检测系统的抖动的检测电路，以及用于驱动至少一个透镜单元的驱动装置 根据检测电路的输出，垂直于摄影透镜装置的摄影光轴的方向，以稳定图像。
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公开(公告)号：US5055868A
公开(公告)日：1991-10-08
申请号：US391319
申请日：1989-08-08
申请人： Yoshinori Itoh , Kouji Oizumi
发明人： Yoshinori Itoh , Kouji Oizumi
CPC分类号： G02B15/16 , G02B23/145
摘要： A finder device is disclosed comprising a first lens group having a positive refractive power to form a first image, a second lens group having a positive refractive power to re-form the first image, and an eyepiece lens group having a positive refractive power to observe the image the second lens group forms, wherein zooming is performed by moving the first and second lens groups along respective different loci of motion from each other.
摘要翻译： 公开了一种取景器装置，包括具有正折射能力以形成第一图像的第一透镜组，具有正折射力的第二透镜组以重新形成第一图像，以及具有正屈光力的目镜透镜组以观察 第二透镜组形成的图像，其中通过沿彼此不同的运动轨迹移动第一和第二透镜组来执行变焦。
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公开(公告)号：US4949107A
公开(公告)日：1990-08-14
申请号：US393774
申请日：1989-08-15
CPC分类号： G03B13/12 , G02B23/145
摘要： A camera having a photographic lens and an eyepiece lens for observing an image formed by the photographic lens, wherein when this camera is used as a telescope, the interval between the image and the eyepiece lens is shortened, while simultaneously changing the focal length of the eyepiece lens, so that the magnification of the finder is increased.
摘要翻译： 具有摄影镜头和用于观察由摄影镜头形成的图像的目镜的相机，其中当将该照相机用作望远镜时，图像与目镜之间的间隔缩短，同时改变摄像镜头的焦距 目镜，使得取景器的放大倍数增加。
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