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    Spectrally Encoded Forward View Endoscope and Spectrally Encoded Multi-View Endoscope, Probe, and Imaging Apparatus
    2.
    发明申请
    Spectrally Encoded Forward View Endoscope and Spectrally Encoded Multi-View Endoscope, Probe, and Imaging Apparatus 审中-公开

    公开(公告)号：US20190374092A1

    公开(公告)日：2019-12-12

    申请号：US16476826

    申请日：2018-01-10

    Applicant: Canon U.S.A., Inc.

    Inventor： Tzu-Yu Wu ,  Mitsuhiro Ikuta ,  Seiji Takeuchi ,  Naoki Kohara ,  Osamu Koyama

    IPC: A61B1/00 ,  G02B5/18 ,  A61B1/07 ,  G01J3/02 ,  G01J3/18

    Abstract: A Spectrally Encoded Forward View or Multi-View Endoscope, Probe, and Imaging Apparatus and system, and methods and storage mediums for use therewith, are provided herein. At least one apparatus or system may comprise a first waveguide; an optical system; and a diffraction grating. The first waveguide may be for guiding light from a light source to an output port of the first waveguide. The optical system may comprise at least a first reflecting surface and a second reflecting surface. The first reflecting surface may be arranged to reflect light from the output port of the first waveguide to the second reflecting surface. The second reflecting surface may be arranged to reflect light from the first reflecting surface back through the first reflecting surface to the diffraction grating. The diffraction grating may diffract light from the second reflecting surface in several lights/colors of non-zero diffraction orders in a first direction.

    Optical fiber arrangement for endoscope
    4.
    发明授权
    Optical fiber arrangement for endoscope 有权

    公开(公告)号：US11213191B2

    公开(公告)日：2022-01-04

    申请号：US16248607

    申请日：2019-01-15

    Applicant: CANON U.S.A., INC.

    Inventor： Seiji Takeuchi ,  Mitsuhiro Ikuta ,  Anderson Thi Mach

    IPC: A61B1/00 ,  A61B1/05 ,  A61B1/06 ,  G02B6/10 ,  A61B1/07 ,  G02B23/24 ,  F21V8/00 ,  G02B6/44 ,  G02B6/42 ,  G02B6/36

    Abstract: An endoscopic probe extending from a proximal end to a distal end thereof, and configured to be inserted in a tubular lumen to observe a sample is disclosed. The probe includes a first waveguide enclosed within an inner sheath and extending from the proximal end to the distal end along an axis of the inner sheath; and a plurality of second waveguides having at least the distal ends thereof arranged in one or more rings around the inner sheath to surround the distal end of the first waveguide. At the distal end, the axis of each of the second waveguides is tilted with respect to the axis of the first waveguide by a tilt angle which can be adjustable. This novel endoscopic probe has a resultant numerical aperture larger than the numerical aperture of each of the second waveguides, and it may be applicable to forward-viewing spectrally encoded endoscopes (SEE).

    Spectrally encoded forward view and spectrally encoded multi-view endoscope using back-reflected light between reflective surfaces
    8.
    发明授权
    Spectrally encoded forward view and spectrally encoded multi-view endoscope using back-reflected light between reflective surfaces 有权

    公开(公告)号：US10682044B2

    公开(公告)日：2020-06-16

    申请号：US16476826

    申请日：2018-01-10

    Applicant: Canon U.S.A., Inc.

    Inventor： Tzu-Yu Wu ,  Mitsuhiro Ikuta ,  Seiji Takeuchi ,  Naoki Kohara ,  Osamu Koyama

    IPC: A61B1/00 ,  A61B1/07 ,  G01J3/02 ,  G01J3/18 ,  G02B5/18 ,  G02B3/00

    Abstract: A Spectrally Encoded Forward View or Multi-View Endoscope, Probe, and Imaging Apparatus and system, and methods and storage mediums for use therewith, are provided herein. At least one apparatus or system may comprise a first waveguide; an optical system; and a diffraction grating. The first waveguide may be for guiding light from a light source to an output port of the first waveguide. The optical system may comprise at least a first reflecting surface and a second reflecting surface. The first reflecting surface may be arranged to reflect light from the output port of the first waveguide to the second reflecting surface. The second reflecting surface may be arranged to reflect light from the first reflecting surface back through the first reflecting surface to the diffraction grating. The diffraction grating may diffract light from the second reflecting surface in several lights/colors of non-zero diffraction orders in a first direction.

    ENDOSCOPIC PROBE HAVING ROTATING CORE WITH BUILT-IN ENCODER
    9.
    发明申请
    ENDOSCOPIC PROBE HAVING ROTATING CORE WITH BUILT-IN ENCODER 审中-公开

    公开(公告)号：US20200154985A1

    公开(公告)日：2020-05-21

    申请号：US16192398

    申请日：2018-11-15

    Applicant: Canon U.S.A. Inc.

    Inventor： Mitsuhiro Ikuta

    IPC: A61B1/00 ,  A61B5/00 ,  G02B23/24 ,  A61B1/06 ,  A61B1/07

    Abstract: An endoscopic probe includes a rotatable core for guiding first light from a first light source to a sample; a non-rotatable sheath arranged concentrically around the rotatable core; and a plurality of fibers surrounding the distal end of the non-rotatable sheath. The rotatable core includes a plurality of patterns built-in at the distal end thereof. Some of the fibers are used to detect the first light scattered by the sample, some fibers are used to irradiate the patterns with second light, and some fibers are used to collect the second light reflected from the patterns. The fibers are aligned with plurality of patterns to collect the reflected second light as the rotatable core rotates, and the rotation position of the rotatable core is determined by correlating intensity variation the reflected light with time collection. NURD of a SEE image is compensated based on the position information.

    OPTICAL FIBER ARRANGEMENT FOR ENDOSCOPE
    10.
    发明申请
    OPTICAL FIBER ARRANGEMENT FOR ENDOSCOPE 审中-公开

    公开(公告)号：US20190223706A1

    公开(公告)日：2019-07-25

    申请号：US16248607

    申请日：2019-01-15

    Applicant: CANON U.S.A., INC.

    Inventor： Seiji Takeuchi ,  Mitsuhiro Ikuta ,  Anderson Thi Mach

    IPC: A61B1/05 ,  A61B1/06 ,  A61B1/07 ,  A61B1/00 ,  G02B6/10

    Abstract: An endoscopic probe extending from a proximal end to a distal end thereof, and configured to be inserted in a tubular lumen to observe a sample is disclosed. The probe includes a first waveguide enclosed within an inner sheath and extending from the proximal end to the distal end along an axis of the inner sheath; and a plurality of second waveguides having at least the distal ends thereof arranged in one or more rings around the inner sheath to surround the distal end of the first waveguide. At the distal end, the axis of each of the second waveguides is tilted with respect to the axis of the first waveguide by a tilt angle which can be adjustable. This novel endoscopic probe has a resultant numerical aperture larger than the numerical aperture of each of the second waveguides, and it may be applicable to forward-viewing spectrally encoded endoscopes (SEE).

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