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145 条记录 (耗时 0.036 秒)

    Changeable magnification optical system
    81.
    发明授权
    Changeable magnification optical system 失效
    可变倍率光学系统

    公开(公告)号：US4840466A

    公开(公告)日：1989-06-20

    申请号：US872138

    申请日：1986-06-09

    申请人： Yasuyuki Yamada ,  Isao Nakazawa

    发明人： Yasuyuki Yamada ,  Isao Nakazawa

    IPC分类号： G02B9/34 ,  G02B9/62 ,  G02B9/64 ,  G02B15/10

    CPC分类号： G02B15/10

    摘要： An optical system of changeable magnification comprising a master lens arranged normally in axial alignment to an image receptor to be switchable to another light path which includes a rear converter, and a reflection mirror arranged so that when the master lens is switched from the first to the second light path, the light emerging from the converter is directed to the image receptor, while blocking the first light path off the image receptor, thereby the image magnification is changed from one value to another.

    摘要翻译： 一种可变倍率的光学系统，包括通常与图像接收器轴向对准布置的主透镜，以便切换到包括后转换器的另一光路，反射镜布置成使得当主镜头从第一到第 第二光路，从转换器出射的光被引导到图像接收器，同时将第一光路阻挡在图像接收器之外，从而将图像放大率从一个值改变到另一个值。

    Magnetic recording medium
    82.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4798755A

    公开(公告)日：1989-01-17

    申请号：US857872

    申请日：1986-05-01

    申请人： Yasuyuki Yamada ,  Hajime Miyatsuka

    发明人： Yasuyuki Yamada ,  Hajime Miyatsuka

    IPC分类号： G11B5/702 ,  G11B5/716

    CPC分类号： G11B5/7022 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24942 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/31609 ,  Y10T428/31935

    摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having provided on one side thereof a magnetic recording layer comprising a binder having dispersed therein fine ferromagnetic particles and on the other side thereof a backing layer, wherein at least one of said magnetic layer and backing layer contains (1) a vinyl chloride resin having --SO.sub.3 M (wherein M is Li, Na, or K) groups and epoxy groups, and (2) polyurethane as binders. The medium has reduced output variation and improved running durability.

    摘要翻译： 公开了一种磁记录介质，其包括非磁性载体，该非磁性载体的一侧设置有磁记录层，所述磁记录层包括分散有细小铁磁性颗粒的粘合剂，其另一侧具有背衬层，其中所述磁性层 背衬层含有（1）具有-SO 3 M（其中M为Li，Na或K）基团和环氧基的氯乙烯树脂，和（2）作为粘合剂的聚氨酯。 该介质具有减少的输出变化和改善的运行耐久性。

    Focusing-in-part lens system
    83.
    发明授权
    Focusing-in-part lens system 失效
    集中式镜头系统

    公开(公告)号：US4784480A

    公开(公告)日：1988-11-15

    申请号：US233188

    申请日：1981-02-10

    申请人： Hideo Yokota ,  Yasuyuki Yamada

    发明人： Hideo Yokota ,  Yasuyuki Yamada

    IPC分类号： G02B9/34 ,  G02B9/08 ,  G02B9/42 ,  G02B9/50 ,  G02B9/52 ,  G02B9/60

    CPC分类号： G02B9/08 ,  G02B9/42 ,  G02B9/50 ,  G02B9/52

    摘要： An objective lens comprising a front lens group of positive power followed by a diaphragm, and a rear lens group of positive power axially movable for focusing and comprised of a plurality of members with the strongest diverging surface of concave curvature being arranged toward the front of the lens.

    摘要翻译： 一种物镜，包括正光焦度的前透镜组，后面是光阑，以及能够轴向移动以进行聚焦的正透镜组，并且具有最强的凹曲率的发散表面的多个部件的后透镜组朝向 镜片。

    Zoom lens of short total length
    85.
    发明授权
    Zoom lens of short total length 失效
    变焦镜头长度短

    公开(公告)号：US4726668A

    公开(公告)日：1988-02-23

    申请号：US741634

    申请日：1985-06-05

    申请人： Hiroki Nakayama ,  Yasuhisa Sato ,  Kouji Oizumi ,  Yasuyuki Yamada

    发明人： Hiroki Nakayama ,  Yasuhisa Sato ,  Kouji Oizumi ,  Yasuyuki Yamada

    IPC分类号： G02B13/18 ,  G02B15/16 ,  G02B15/00

    CPC分类号： G02B15/161

    摘要： In the disclosed zoom lens, a positive front lens unit and a negative rear lens unit are moved forwardly axially in differential relation to vary the overall focal length from a minimum to a maximum value, while a positive middle lens unit is kept stationary during the variation of the focal length. A diaphragm determining the F-number is positioned at a fixed point between the front and rear lens units.

    摘要翻译： 在所公开的变焦镜头中，正前透镜单元和负后透镜单元以差分关系向前轴向移动，以将整个焦距从最小值变化到最大值，而正中间透镜单元在变化期间保持静止 的焦距。 确定F数的隔膜位于前后透镜单元之间的固定点。

    Beam splitter for changing optical paths small tilt
    86.
    发明授权
    Beam splitter for changing optical paths small tilt 失效
    光束分离器用于改变光路小倾斜

    公开(公告)号：US4697882A

    公开(公告)日：1987-10-06

    申请号：US772769

    申请日：1985-09-05

    申请人： Yasuhisa Sato ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Kouji Oizumi

    发明人： Yasuhisa Sato ,  Yasuyuki Yamada ,  Hiroki Nakayama ,  Kouji Oizumi

    IPC分类号： G02B27/10 ,  G02B7/18 ,  G02B23/04 ,  G02B26/08 ,  G02B27/14 ,  G03B13/02

    CPC分类号： G02B27/126 ,  G02B23/04 ,  G02B7/1805

    摘要： In the disclosed beam splitter, a first prism has an entrance face, an inclined face, and a mirrored face for totally reflecting a beam reflected from the inclined face back to the inclined face. A second prism has an entrance face in parallel with the inclined face of the first prism, and two exit faces. One of the exit faces of the second prism cooperates with the mirrored face of the first prism. When the first and second prisms are turned as a unit, the inclined face of the first prism either passes a light beam arriving from the entrance face through to the second prism and out one of the exit faces or totally reflects the arriving light beam to the mirrored face. The light beam reflected back from the mirrored face now passes through the inclined face to the second prism and out the cooperating exit face of the second prism.

    摘要翻译： 在公开的分束器中，第一棱镜具有入射面，倾斜面和镜面，用于将从倾斜面反射的光束全反射回倾斜面。 第二棱镜具有与第一棱镜的倾斜面平行的入射面和两个出射面。 第二棱镜的出射面之一与第一棱镜的镜面配合。 当第一和第二棱镜作为一个单元转动时，第一棱镜的倾斜面或者将从入射面到达的光束通过到第二棱镜，并将出射面中的一个出射面全部反射到 镜面。 从镜面反射回来的光束现在通过倾斜面到达第二棱镜并离开第二棱镜的配合出射面。

    Albada finder with display within the field of view
    88.
    发明授权
    Albada finder with display within the field of view 失效
    Albada查找器与显示在视野内

    公开(公告)号：US4582409A

    公开(公告)日：1986-04-15

    申请号：US653967

    申请日：1984-09-24

    申请人： Yasuyuki Yamada ,  Yasuhisa Sato ,  Hiroki Nakayama ,  Hideo Yokota

    发明人： Yasuyuki Yamada ,  Yasuhisa Sato ,  Hiroki Nakayama ,  Hideo Yokota

    IPC分类号： G03B13/08 ,  G03B17/20

    CPC分类号： G03B13/08 ,  G03B17/20

    摘要： An Albada finder is constructed of an objective lens, a reflection layer, a field-of-view defining frame, and an eyepiece arranged in sequence to provide a mirror image of the frame from the reflection layer to the eyepiece. An optical device of positive power is arranged outside an optical path of the finder. An information source with an information display plate and an illuminator for illuminating the display plate are arranged so that light from the display plate comes through the optical device into the eyepiece as an oblique beam. This shortens the distance from the reflection layer to the eyepiece while achieving a sharp information display.

    摘要翻译： 阿尔巴达探测器由物镜，反射层，视野定义框架和目镜构成，以便将反射层的镜像提供给目镜。 正功率的光学装置设置在取景器的光路的外侧。 具有信息显示板和用于照亮显示板的照明器的信息源被布置成使得来自显示板的光作为倾斜光束通过光学装置进入目镜。 这可以缩短从反射层到目镜的距离，同时实现清晰的信息显示。