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    ENDOSCOPE SYSTEM AND CHARACTERISTIC AMOUNT CALCULATION METHOD
    1.
    发明申请
    ENDOSCOPE SYSTEM AND CHARACTERISTIC AMOUNT CALCULATION METHOD 审中-公开

    公开(公告)号：US20190239735A1

    公开(公告)日：2019-08-08

    申请号：US16318294

    申请日：2017-09-01

    申请人： HOYA CORPORATION

    发明人： Masaaki FUKUDA

    IPC分类号： A61B1/06 ,  A61B1/00 ,  A61B1/045

    CPC分类号： A61B1/0638 ,  A61B1/00009 ,  A61B1/045 ,  A61B1/0646 ,  A61B1/0676 ,  G02B23/2461 ,  G02B23/26

    摘要： An endoscope system generates first to third color image data by imaging biological tissue illuminated with first to third light. The endoscope system uses a first light intensity ratio of the first light and the second light, and/or an imaging sensitivity of the image sensor, to correct a first ratio between multiple components of the first and second color image data, and the endoscope system calculates a first characteristic amount of the biological tissue based on the first corrected ratio. Furthermore, the endoscope system uses a second light intensity ratio between the second light and the third light to correct a second ratio between multiple components of the second and third color image data, and the endoscope system calculates a second characteristic amount of the biological tissue based on the second corrected ratio and the first characteristic amount.

    ENDOSCOPE
    2.
    发明申请
    ENDOSCOPE 审中-公开

    公开(公告)号：US20190239733A1

    公开(公告)日：2019-08-08

    申请号：US16384947

    申请日：2019-04-16

    申请人： FUJIFILM Corporation

    发明人： Takashi YASHIRO ,  Issei SUZUKI

    IPC分类号： A61B1/05 ,  A61B1/045 ,  G02B23/24 ,  H04N5/225

    CPC分类号： A61B1/05 ,  A61B1/00 ,  A61B1/00096 ,  A61B1/04 ,  A61B1/045 ,  G02B23/2484 ,  G02B23/26 ,  H04N5/2254 ,  H04N2005/2255

    摘要： An endoscope includes an image pick-up-device at a distal-end-part of an insertion-part. The image pick-up-device includes a lens barrel holding an imaging lens; an image-sensor having a rectangular shape as an outer peripheral shape of an image reception surface on which imaging light incident via the imaging lens; and a sensor holder holding the image-sensor in a state where the image reception surface intersects a longitudinal direction of the insertion-part. The sensor holder has three independent wall-parts respectively covering three side surfaces of the image-sensor, and on an XY plane orthogonal to the longitudinal direction of the insertion-part, a gap length, in an X-axis direction on the plane between adjacent wall-parts of the three wall-parts and a gap length, in Y-axis direction, between the adjacent wall-parts are equal to each other. Additionally, the height of each of the three wall-parts is 1.5 times to 3 times the gap length.

    LIGHT-SCANNING APPARATUS AND LIGHT-SCANNING-APPARATUS CONTROL METHOD
    5.
    发明申请
    LIGHT-SCANNING APPARATUS AND LIGHT-SCANNING-APPARATUS CONTROL METHOD 审中-公开

    公开(公告)号：US20180196250A1

    公开(公告)日：2018-07-12

    申请号：US15910071

    申请日：2018-03-02

    申请人： OLYMPUS CORPORATION

    发明人： Atsuyoshi SHIMAMOTO

    IPC分类号： G02B23/24 ,  H04N3/30 ,  H04N5/225

    CPC分类号： G02B23/2469 ,  A61B1/00006 ,  A61B1/00165 ,  A61B1/00172 ,  G02B23/26 ,  G02B26/103 ,  H04N3/30 ,  H04N5/2256 ,  H04N2005/2255

    摘要： A light-scanning apparatus according to the present invention is provided with: an optical fiber; a signal-generating portion that generates a driving signal that has a frequency fd different from a resonant frequency fr of the optical fiber; and a driving portion that causes a distal end of the optical fiber to undergo spiral oscillations in accordance with the driving signal, wherein the signal-generating portion generates the driving signal that includes, during one scanning period, a first period in which an amplitude gradually increases from substantially zero to a maximum value and a second period in which the amplitude gradually decreases from the maximum value to substantially zero, and that satisfies conditional expression (1) below. N2 is the number of oscillations of the driving signal in the second period. { Eq .  1 } 2 ≥ 1 N   2 2 · 12 ( fd fr - 0.999 ) 2  (  when   fd fr > 1 ) ( 1 )

    OPTICAL SCANNING ENDOSCOPE AND OPTICAL FIBER SCANNING APPARATUS
    8.
    发明申请
    OPTICAL SCANNING ENDOSCOPE AND OPTICAL FIBER SCANNING APPARATUS 审中-公开

    公开(公告)号：US20180153382A1

    公开(公告)日：2018-06-07

    申请号：US15877428

    申请日：2018-01-23

    申请人： OLYMPUS CORPORATION

    发明人： Masanori OGATA

    IPC分类号： A61B1/00 ,  A61B1/07

    CPC分类号： A61B1/00172 ,  A61B1/07 ,  G02B23/26 ,  G02B26/103

    摘要： An optical fiber scanning apparatus includes a tubular housing, an optical fiber disposed along a Z axis, which is a center axis of the housing, provided with a magnet, and configured to emit light from a free end thereof, an X-axis coil including at least one spiral coil configured to apply a magnetic field in an X-axis direction orthogonal to the Z axis, a Y-axis coil including at least one spiral coil configured to apply a magnetic field in a Y-axis direction orthogonal to the Z axis and the X axis, and a magnetic-field inducing section including an inner magnetic-field inducing section including a core disposed in a center portion on an inside, which is the center axis side of the spiral coils, and an outer magnetic-field inducing section disposed on an outside opposite to the inside.