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    Optical system for focusing an object up on an image surface of a solid-state image device
    1.
    发明授权
    Optical system for focusing an object up on an image surface of a solid-state image device 失效
    用于将物体聚焦在固态图像装置的图像表面上的光学系统

    公开(公告)号：US5999324A

    公开(公告)日：1999-12-07

    申请号：US868599

    申请日：1997-06-04

    申请人： Tetsuo Kohno ,  Takashi Okada ,  Hideki Nagata

    发明人： Tetsuo Kohno ,  Takashi Okada ,  Hideki Nagata

    IPC分类号： G02B13/04 ,  G02B27/10 ,  G02B9/00

    CPC分类号： G02B13/04

    摘要： An optical system focuses an object upon an image surface of a solid-state image device. The optical system has a master optical system and a condenser lens. The master optical system and the condenser lens both have positive optical power. The focusing optical system fulfills the following conditions: ##EQU1## where a represents the distance between the exit pupil of the master optical system and the image surface;b represents the distance between the exit pupil of the entire optical system and the image surface; andY' represents the maximum image height.

    摘要翻译： 光学系统将物体聚焦在固态图像装置的图像表面上。 光学系统具有主光学系统和聚光透镜。 主光学系统和聚光透镜都具有正光学功率。 聚焦光学系统满足以下条件：其中a表示主光学系统的出射光瞳和图像表面之间的距离; b表示整个光学系统的出射光瞳和图像表面之间的距离; Y'表示最大图像高度。

    Taking optical system for video shooting
    2.
    发明授权
    Taking optical system for video shooting 失效
    采用光学系统进行视频拍摄

    公开(公告)号：US5963377A

    公开(公告)日：1999-10-05

    申请号：US165275

    申请日：1998-10-01

    申请人： Takashi Okada ,  Tetsuo Kohno ,  Hideki Nagata

    发明人： Takashi Okada ,  Tetsuo Kohno ,  Hideki Nagata

    IPC分类号： G02B15/177 ,  G02B15/16 ,  G02B13/18

    CPC分类号： G02B15/177

    摘要： A zoom lens system is provided with, from the object side, a first lens unit having a negative optical power, a second lens unit having a positive optical power, a third lens unit having a negative optical power, and a condenser lens unit having a positive optical power. In this zoom lens system, zooming is performed by varying the distances between the first, the second, the third lens unit, and the condenser lens unit. Additionally, this zoom lens system fulfills the condition below:-1.5

    摘要翻译： 变焦透镜系统从物体侧设置具有负光焦度的第一透镜单元，具有正光焦度的第二透镜单元，具有负光焦度的第三透镜单元和具有负光焦度的聚光透镜单元， 正光功率。 在该变焦透镜系统中，通过改变第一透镜单元，第二透镜单元和聚光透镜单元之间的距离来进行变焦。 另外，该变焦透镜系统满足以下条件：-1.5

    Compact zoom lens system
    4.
    发明授权
    Compact zoom lens system 失效
    小型变焦镜头系统

    公开(公告)号：US5283693A

    公开(公告)日：1994-02-01

    申请号：US714266

    申请日：1991-06-12

    申请人： Tetsuo Kohno ,  Takashi Okada ,  Mitsuko Date ,  Hiroyuki Matsumoto

    发明人： Tetsuo Kohno ,  Takashi Okada ,  Mitsuko Date ,  Hiroyuki Matsumoto

    IPC分类号： G02B15/177 ,  G02B15/14

    CPC分类号： G02B15/177

    摘要： A compact zoom lens system comprises a front negative lens component and a rear positive lens component with a variable air space between the front and the rear lens components. The front negative lens component consists of two lens elements and the rear lens component consists of two or three lens elements. A plurality of aspherical surfaces are employed for the compact zoom lens system. Furthermore, some zoom lens system includes an additional negative lens component having a weak refractive power behind the rear lens component.

    摘要翻译： 紧凑型变焦透镜系统包括前负透镜部件和后正透镜部件，其在前透镜部件和后透镜部件之间具有可变空气空间。 前负透镜组件由两个透镜元件组成，后透镜组件由两个或三个透镜元件组成。 多个非球面用于紧凑变焦透镜系统。 此外，一些变焦透镜系统包括在后透镜部件后面具有弱折射力的附加负透镜部件。

    Compact zoom lens system
    5.
    发明授权
    Compact zoom lens system 失效
    小型变焦镜头系统

    公开(公告)号：US5257135A

    公开(公告)日：1993-10-26

    申请号：US770085

    申请日：1991-09-30

    申请人： Tetsuo Kohno ,  Takashi Okada ,  Tetsuya Arimoto ,  Hiroyuki Matsumoto

    发明人： Tetsuo Kohno ,  Takashi Okada ,  Tetsuya Arimoto ,  Hiroyuki Matsumoto

    IPC分类号： G02B15/173 ,  G02B15/14 ,  G02B13/18

    CPC分类号： G02B15/173

    摘要： A compact zoom lens system comprises from the object side: a first lens component of a positive refractive power; a second lens component of a negative refractive power with a variable air space between the first and second lens components; and a third lens component of a positive refractive power with a variable air space between the second and third lens components. A plurality of aspherical surfaces are employed for the realization of a compact and low-cost zoom lens system. Furthermore, a focusing operation is carried out by both of the first and second lens components or third lens component.

    摘要翻译： 一种紧凑型变焦透镜系统，包括：物体侧：正屈光力的第一透镜部件; 具有在第一和第二透镜部件之间具有可变空气空间的负折光力的第二透镜部件; 以及具有在第二和第三透镜部件之间具有可变空气空间的正折光力的第三透镜部件。 多个非球面用于实现紧凑且低成本的变焦透镜系统。 此外，由第一和第二透镜部件或第三透镜部件两者进行聚焦操作。

    Zoom lens system
    7.
    发明授权
    Zoom lens system 失效
    变焦镜头系统

    公开(公告)号：US6002529A

    公开(公告)日：1999-12-14

    申请号：US694540

    申请日：1996-08-09

    申请人： Tetsuo Kohno ,  Takashi Okada

    发明人： Tetsuo Kohno ,  Takashi Okada

    IPC分类号： G02B15/173 ,  G02B15/14

    CPC分类号： G02B15/173

    摘要： A zoom lens system for use in a compact lens shutter camera has excellent optical properties at a high zoom ratio of 4-5 across the entire zoom range with a small number of lenses. The zoom lens system has, from the object side to the image side, a positive first lens unit, a negative second lens unit, a positive third lens unit and a negative fourth lens unit, wherein the air spaces between each lens unit vary during a zooming operation. The zoom lens system fulfills predetermined conditions related to the back focal distance, the shifting amount of the second and third lens units during zooming and the thickness of the third lens unit.

    摘要翻译： 用于紧凑型镜头快门摄像机的变焦透镜系统在整个变焦范围内的高变焦比下具有优异的光学特性，并具有少量的透镜。 变焦透镜系统从物体侧到像侧具有正的第一透镜单元，负的第二透镜单元，正的第三透镜单元和负的第四透镜单元，其中每个透镜单元之间的空气间隔在 缩放操作。 变焦透镜系统满足与后焦距，变焦期间的第二和第三透镜单元的移动量以及第三透镜单元的厚度相关的预定条件。

    Zoom lens system
    8.
    发明授权
    Zoom lens system 有权
    变焦镜头系统

    公开(公告)号：US06191895B1

    公开(公告)日：2001-02-20

    申请号：US09165452

    申请日：1998-10-02

    申请人： Tetsuya Arimoto ,  Mamoru Terada ,  Takashi Okada ,  Kenji Konno ,  Tetsuo Kohno ,  Kazuhiko Ishimaru

    发明人： Tetsuya Arimoto ,  Mamoru Terada ,  Takashi Okada ,  Kenji Konno ,  Tetsuo Kohno ,  Kazuhiko Ishimaru

    IPC分类号： G02B1514

    CPC分类号： G02B15/173

    摘要： A zoom lens system has, from the object side, a first lens unit having a optical power, a second lens unit having a negative optical power a third lens unit having a positive optical power, and a succeeding lens unit. The first and the third lens units monotonically move toward the object side during zooming from the shortest focal length condition to the longest focal length condition. A number of predetermined conditions are disclosed which can be satisfied to ensure a high quality, compact zoom lens for a digital camera.

    摘要翻译： 变焦透镜系统从物体侧具有具有光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元和后续透镜单元。 第一透镜单元和第三透镜单元在从最短焦距条件到最长焦距条件的变焦期间单调地向物体侧移动。 公开了可以满足多个预定条件以确保用于数码相机的高品质紧凑变焦镜头。

    Taking lens system
    9.
    发明授权
    Taking lens system 失效
    拍摄镜头系统

    公开(公告)号：US5872660A

    公开(公告)日：1999-02-16

    申请号：US822723

    申请日：1997-03-24

    申请人： Tetsuo Kohno ,  Takashi Okada

    发明人： Tetsuo Kohno ,  Takashi Okada

    IPC分类号： G02B13/18 ,  G02B15/177 ,  G02B15/22 ,  G02B15/14

    CPC分类号： G02B15/177

    摘要： The object of the present invention is to provide a taking lens system that has an exit pupil located at or close to infinity and has a short total length. In order to achieve said object, the present invention comprises, from the object side, a main optical system comprising a first lens unit having a negative refractive power and a second lens unit having a positive refractive power, and a condenser lens that is located between said main optical system and the image plane and has a positive refractive power.

    摘要翻译： 本发明的目的是提供一种具有位于或接近无限远并具有短总长度的出射光瞳的拍摄镜头系统。 为了实现上述目的，本发明从物体侧构成包括具有负折光力的第一透镜单元和具有正折光力的第二透镜单元的主光学系统，以及位于 所述主光学系统和像平面具有正的折射光焦度。

    Compact zoom lens system
    10.
    发明授权
    Compact zoom lens system 失效
    小型变焦镜头系统

    公开(公告)号：US5446592A

    公开(公告)日：1995-08-29

    申请号：US139900

    申请日：1993-10-19

    申请人： Tetsuo Kohno ,  Takashi Okada ,  Mitsuko Date

    发明人： Tetsuo Kohno ,  Takashi Okada ,  Mitsuko Date

    IPC分类号： G02B15/177 ,  G02B15/14

    CPC分类号： G02B15/177

    摘要： A compact zoom lens system comprises a front negative lens component and a rear positive lens component with a variable air space between the front and the rear lens components. The front negative lens component consists of two lens elements and the rear lens component consists of two or three lens elements. A plurality of aspherical surfaces are employed for the compact zoom lens system. Furthermore, some zoom lens system includes an additional negative lens component having a weak refractive power behind the rear lens component.

    摘要翻译： 紧凑型变焦透镜系统包括前负透镜部件和后正透镜部件，其在前透镜部件和后透镜部件之间具有可变空气空间。 前负透镜组件由两个透镜元件组成，后透镜组件由两个或三个透镜元件组成。 多个非球面用于紧凑变焦透镜系统。 此外，一些变焦透镜系统包括在后透镜部件后面具有弱折射力的附加负透镜部件。