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    Imaging optical system having a moire elimination effect
    1.
    发明授权
    Imaging optical system having a moire elimination effect 失效
    具有莫尔纹消除效果的成像光学系统

    公开(公告)号：US5270825A

    公开(公告)日：1993-12-14

    申请号：US596074

    申请日：1990-10-11

    申请人： Yoshiharu Takasugi ,  Akira Hasegawa

    发明人： Yoshiharu Takasugi ,  Akira Hasegawa

    IPC分类号： A61B1/04 ,  G02B27/60 ,  H04N5/225 ,  H04N5/30

    CPC分类号： G02B27/60 ,  A61B1/042 ,  H04N2005/2255

    摘要： An imaging optical system for forming images of objects on an image surface. The optical system includes an aspherical surface that functions to reduce spatial frequency response of the optical system when aperture size of the optical system is reduced within a variable range and adapted so as to eliminate spurious signal by the aspherical surface.

    摘要翻译： 一种用于在图像表面上形成物体的图像的成像光学系统。 该光学系统包括一个非球面，当光学系统的孔径尺寸在可变范围内减小时，其功能可以减小光学系统的空间频率响应，并适用于消除非球面的杂散信号。

    TV system for endoscopes
    5.
    发明授权
    TV system for endoscopes 失效
    内窥镜电视系统

    公开(公告)号：US5392067A

    公开(公告)日：1995-02-21

    申请号：US962635

    申请日：1992-10-16

    申请人： Mitsujiro Konno ,  Yoshiharu Takasugi ,  Katsuya Ono ,  Kimihiko Nishioka

    发明人： Mitsujiro Konno ,  Yoshiharu Takasugi ,  Katsuya Ono ,  Kimihiko Nishioka

    IPC分类号： A61B1/04 ,  G02B23/24 ,  H04N5/217 ,  H04N5/225 ,  H04N5/357 ,  H04N7/18 ,  H04N7/10

    CPC分类号： H04N5/357 ,  G02B23/26 ,  G02B27/1066 ,  H04N7/18 ,  H04N2005/2255

    摘要： A TV system for endoscopes is configured to connect to a fiber scope using an image guide fiber bundle and a rigid endoscope using a relay lens system. An image is formed by either the fiber scope or the rigid endoscope on a TV monitor. The camera control unit controls a level of the color difference signal in accordance with spatial frequency components contained in the TV signal. A variable switching unit is provided which allows the electrical circuits of the camera control unit to function selectively in accordance with the characteristics of the image transmission system.

    摘要翻译： 用于内窥镜的电视系统被配置为使用图像引导光纤束和使用中继透镜系统的刚性内窥镜连接到光纤示范器。 图像由电视监视器上的光纤示波器或刚性内窥镜形成。 照相机控制单元根据TV信号中包含的空间频率分量来控制色差信号的电平。 提供了可变开关单元，其允许相机控制单元的电路根据图像传输系统的特性选择性地起作用。

    Imaging device
    6.
    发明授权
    Imaging device 失效
    成像设备

    公开(公告)号：US5471343A

    公开(公告)日：1995-11-28

    申请号：US159615

    申请日：1993-11-29

    申请人： Yoshiharu Takasugi

    发明人： Yoshiharu Takasugi

    IPC分类号： A61B1/04 ,  G02B5/30 ,  G02B23/24 ,  G02B27/46 ,  H04N5/225 ,  G02B27/28 ,  G02F1/23

    CPC分类号： H04N5/2254 ,  G02B27/46 ,  G02B5/3083 ,  H04N2005/2255

    摘要： An imaging device has an optical low-pass filter and a solid-state image sensor. The optical low-pass filter includes a plurality of birefringent plates. When a plurality of spaced spots formed by the birefringent plates with respect to incident light are located at adjacent positions such as to be regarded as one spot on the birefringent plates, the birefringent plates are constructed so that a phase difference between light waves passing through the plurality of spaced spots with respect to any wavelength in a visible wavelength region is larger than the wavelength. Thus, the imaging device, even when using many quartz filters, makes the intensities of the spaced spots uniform and can secure the optical low-pass filter free of dependence of wavelength.

    摘要翻译： 一种成像装置具有光学低通滤波器和固态图像传感器。 光学低通滤波器包括多个双折射板。 当由双折射板形成的相对于入射光的多个间隔光斑位于相邻位置时，被认为是双折射板上的一个点，双折射板被构造成使得通过该双折射板的光波之间的相位差 相对于可见波长区域中的任意波长的多个间隔光斑大于波长。 因此，即使使用许多石英滤波器，成像装置也使间隔光斑的强度均匀，并且可以确保光学低通滤波器不受波长的依赖。

    Imaging optical system for endoscopes
    7.
    发明授权
    Imaging optical system for endoscopes 失效
    内窥镜成像光学系统

    公开(公告)号：US5245475A

    公开(公告)日：1993-09-14

    申请号：US710367

    申请日：1991-04-26

    申请人： Yoshiharu Takasugi

    发明人： Yoshiharu Takasugi

    IPC分类号： G02B23/26 ,  G02B15/16 ,  G02B15/173

    CPC分类号： G02B15/173

    摘要： An imaging optical system for endoscopes used for re-imaging an image formed by endoscopes, comprising in the order from the object side a first lens unit which has a positive refractive power and a focusing function, a second lens unit which has a negative refractive power and is moved in a definite direction along the optical axis so as to progressively enhance magnification of the imaging optical system when the optical system is zoomed from the wide position to the tele position, and a third lens unit which has a positive refractive power and is moved along the optical axis so as to keep the image point constant regardless of variation of focal length, said first lens unit being adapted as to be moved independently of the other lens units for varying diopteric power within a positive-to-negative range taking the diopter at the infinite object distance for the imaging optical system as zero.

    摘要翻译： 一种用于对由内窥镜形成的图像重新成像的内窥镜用成像光学系统，包括从物体侧开始具有正折射光焦度和聚焦功能的第一透镜单元的顺序，具有负屈光力的第二透镜单元 沿着光轴沿一定的方向移动，以便当光学系统从宽位置变焦到远距离位置时逐渐增强成像光学系统的放大倍数;以及第三透镜单元，其具有正折光力并且是 沿着光轴移动，以便保持图像点恒定，而与焦距的变化无关，所述第一透镜单元适于独立于其它透镜单元移动，以在正负范围内改变屈光度， 屈光度在成像光学系统的无限物体距离为零。