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    Spectrally encoded probes
    1.
    发明授权
    Spectrally encoded probes 有权

    公开(公告)号：US10234694B2

    公开(公告)日：2019-03-19

    申请号：US15649310

    申请日：2017-07-13

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

    Inventor： Zhuo Wang ,  Seiji Takeuchi

    IPC: G01J3/28 ,  G02B27/42 ,  G01B9/02 ,  G01J3/02 ,  G01J3/18 ,  G02B5/18 ,  G02B23/24 ,  G02B23/26 ,  A61B1/00 ,  A61B5/00 ,  G02B6/32

    Abstract: A novel endoscope, which can be a spectrally encoded endoscope (SEE) probe having forward-view, side-view, or a combination of forward and side views is provided herein. The SEE probe includes a light guiding component, a light focusing component, and a grating component. The probe is configured to forward a light such as a spectrally dispersed light from the grating component to a sample with no intermediate reflections between light guiding component and the grating component. A triangular grating, such as a staircase grating or an overhang grating may be used as the grating component.

    ENDOSCOPE WITH OSCILLATION FOR SPECTRALLY-ENCODED ENDOSCOPY
    2.
    发明申请
    ENDOSCOPE WITH OSCILLATION FOR SPECTRALLY-ENCODED ENDOSCOPY 审中-公开

    公开(公告)号：US20190231182A1

    公开(公告)日：2019-08-01

    申请号：US15886254

    申请日：2018-02-01

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

    Inventor： Jacob Schieffelin Brauer ,  Zhuo Wang ,  Alex Altshuler ,  Anderson Thi Mach

    IPC: A61B1/07 ,  A61B1/00 ,  A61B5/00 ,  G02B23/26

    CPC classification number: A61B1/07 ,  A61B1/00009 ,  A61B1/00045 ,  A61B1/00172 ,  A61B1/0661 ,  A61B5/0075 ,  G02B23/26

    Abstract: Some systems comprise a light source; a spectrometer; an optical scope that has a longitudinal axis and that includes a rotatable optical assembly, which is coupled to the light source and to the spectrometer; and an oscillating-drive device that is coupled to the optical scope. Also, the oscillating-drive device and the optical scope are configured such that the oscillating-drive device can oscillate the rotatable optical assembly of the optical scope through greater than 90° of rotation around the longitudinal axis of the optical scope. And some systems comprise an optical scope that includes a rotatable optical assembly and a spooling mechanism. The rotatable optical assembly includes one or more light-guiding components. Furthermore, the spooling mechanism is configured to wind or unwind the one or more light-guiding components when the rotatable optical assembly rotates.

    Apparatus, system and method for dynamic in-line spectrum compensation of an image
    4.
    发明授权
    Apparatus, system and method for dynamic in-line spectrum compensation of an image 有权

    公开(公告)号：US11010877B2

    公开(公告)日：2021-05-18

    申请号：US15881404

    申请日：2018-01-26

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

    Inventor： Santosh Ganesan ,  Zhuo Wang

    IPC: G06T5/00 ,  G06T5/40 ,  G06T3/40 ,  G06T7/10 ,  G06T5/20 ,  G06T7/00 ,  A61B1/00 ,  G06T5/50 ,  H04N5/235 ,  A61B5/00

    Abstract: An image processing apparatus is provided and includes one or more processors and a memory storing instructions. The one or more processors are controlled to receive image stream data captured by an image capturing apparatus and store, in memory, a current image frame from the received image stream data and store, in memory, a previously received image frame from the received image stream data. The previously received image frame having been received at a time earlier than the current image data frame. Using the previously received image frame data stored in memory, a compensation value representing an illumination spectrum of the previously stored image frame data is calculated and image correction is performed on the current image frame data using the calculated compensation value. The corrected current image frame for display on a display device.

    Capacitive sensing and encoding for imaging probes
    6.
    发明授权
    Capacitive sensing and encoding for imaging probes 有权

    公开(公告)号：US10602989B2

    公开(公告)日：2020-03-31

    申请号：US15255723

    申请日：2016-09-02

    Applicant: Canon U.S.A. Inc.

    Inventor： Zhuo Wang

    IPC: A61B18/14 ,  A61B5/00 ,  G01D5/241 ,  A61B8/12 ,  A61B1/00 ,  A61B18/12

    Abstract: A probe, system, and method of capacitive sensing for detection of relative rotation of one tube with respect to a fixed tube of a probe is provided herewith. The probe includes an inner core, a concentric cylindrical tube, and at least one inner electrode fixed to the inner core and at least one outer electrode fixed to the cylindrical tube. The electrodes are rotationally aligned and form a capacitive sensor that can sense the rotation angle of the inner core compared to the cylindrical tube. This ability to sense relative rotation angle can be used to detect and/or correct for non-uniform rotational distortion.

    Spectrally encoded endoscopic image process
    10.
    发明授权
    Spectrally encoded endoscopic image process 有权

    公开(公告)号：US09846940B1

    公开(公告)日：2017-12-19

    申请号：US15237241

    申请日：2016-08-15

    Applicant: Canon U.S.A. Inc.

    Inventor： Zhuo Wang

    IPC: G06K9/32 ,  G06T7/00 ,  G06T3/00 ,  G06T5/00 ,  G01J3/28 ,  H04N5/225

    CPC classification number: G06T7/0018 ,  A61B3/10 ,  G01J3/2823 ,  G06T3/0006 ,  G06T5/006 ,  G06T2207/10068 ,  H04N5/225 ,  H04N2005/2255

    Abstract: An image processing method. At least one light ray presented by a vector in a first affine coordinate system with a tip of the probe as an origin is projected from the tip of the probe. The light ray is intercepted from a projection surface satisfying a function in the first affine coordinate. A distance between the tip of the probe and an interception point of the light ray on the projection surface is obtained based on a rotation angle of the probe, a wavelength of the light ray, and a deflection angle of the light ray from the probe. A relationship between the first coordinate and a second affine coordinate system defined with the projection surface as a reference is obtained. Image data are acquired from the light ray reflected from the target surface presented in the first affine coordinate. The image data presented in the first affine coordinate are converted into image data presented in the second affine coordinate, and the image data in the second coordinate system are resampled by interpolating or extrapolating a gray scale.

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