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.

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.

公开(公告)号：US10809538B2

公开(公告)日：2020-10-20

申请号：US15823441

申请日：2017-11-27

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

Inventor： Osamu Koyama ,  Akira Yamamoto ,  Naoki Kohara

IPC: G01B9/02 ,  G02B27/10 ,  F21K9/64 ,  F21V8/00 ,  G01J3/50 ,  G01J3/02 ,  G01J3/04 ,  G01J3/28 ,  A61B5/00 ,  G01J3/36 ,  G01J3/18 ,  G02B6/42 ,  G02B6/36 ,  G02B6/34

Abstract: Image acquisition apparatuses, spectral apparatuses, methods and storage mediums for use with same are provided herein. At least one apparatus includes: a diffraction element irradiated by a light; a fiber for receiving reflected scattered light from a subject; a diffraction grating dispersing the transmitted light into light fluxes of wavelength bands again; an optical system imaging the split light fluxes; and an imaging device near the focal point of the optical system. An image is changed by rotating the diffraction grating, from which a two-dimensional image is acquired. The transmitted light may be branched into two or more, and input to a collimator lens and imaged as multiple spectral sequences by the optical system. At least one apparatus may form light fluxes traveling at different angles; and may acquire spectral information of the reflected and scattered light. Preferably, for the luminous fluxes, no gap exists in an image.

公开(公告)号：US20190162977A1

公开(公告)日：2019-05-30

申请号：US15823441

申请日：2017-11-27

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

Inventor： Osamu Koyama ,  Akira Yamamoto ,  Naoki Kohara

IPC: G02B27/10 ,  F21K9/64 ,  F21V8/00 ,  G01J3/28 ,  G01J3/02 ,  G01J3/04 ,  G01J3/50

Abstract: Image acquisition apparatuses, spectral apparatuses, methods and storage mediums for use with same are provided herein. At least one apparatus includes: a diffraction element irradiated by a light; a fiber for receiving reflected scattered light from a subject; a diffraction grating dispersing the transmitted light into light fluxes of wavelength bands again; an optical system imaging the split light fluxes; and an imaging device near the focal point of the optical system. An image is changed by rotating the diffraction grating, from which a two-dimensional image is acquired. The transmitted light may be branched into two or more, and input to a collimator lens and imaged as multiple spectral sequences by the optical system. At least one apparatus may form light fluxes traveling at different angles; and may acquire spectral information of the reflected and scattered light. Preferably, for the luminous fluxes, no gap exists in an image.