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    OPTICAL AMPLIFIER AND OPTICAL AMPLIFYING METHOD
    3.
    发明申请
    OPTICAL AMPLIFIER AND OPTICAL AMPLIFYING METHOD 有权
    光放大器和光学放大方法

    公开(公告)号：US20140285876A1

    公开(公告)日：2014-09-25

    申请号：US14209857

    申请日：2014-03-13

    Applicant: Sony Corporation

    Inventor： Hiroshi Yoshida

    IPC: H01S5/10

    CPC classification number: H01S5/1064 ,  H01S3/2308 ,  H01S5/0657 ,  H01S5/1003 ,  H01S5/1039 ,  H01S5/1085 ,  H01S5/14 ,  H01S5/32341 ,  H01S5/50

    Abstract: There is provided an optical amplifier including a diffusing unit configured to be driven by a first current density and to increase a beam diameter of an incident laser beam that passes through a first waveguide that guides the laser beam, and an amplifying unit configured to be driven by a second current density that is higher than the first current density and to amplify intensity of the laser beam that passes through a second waveguide that guides the laser beam whose beam diameter has been increased by the diffusing unit. The first waveguide of the diffusing unit has a tapered shape in which a cross-sectional area of the first waveguide is gradually increased toward a travelling direction of the laser beam.

    Abstract translation: 提供了一种光放大器，包括漫射单元，其被配置为由第一电流密度驱动并且增加穿过引导激光束的第一波导的入射激光束的光束直径;以及放大单元，被配置为被驱动 通过比第一电流密度高的第二电流密度，并放大穿过引导其通过扩散单元增加光束直径的激光束的第二波导的激光束的强度。 漫射单元的第一波导具有锥形形状，其中第一波导的横截面积朝向激光束的行进方向逐渐增加。

    Imaging device and endoscope
    4.
    发明授权
    Imaging device and endoscope 有权

    公开(公告)号：US11506789B2

    公开(公告)日：2022-11-22

    申请号：US16095523

    申请日：2017-02-28

    Applicant: SONY CORPORATION

    Inventor： Goro Fujita ,  Hiroshi Yoshida ,  Kenji Tanaka

    IPC: A61B1/04 ,  G01S17/89 ,  A61B1/00 ,  G01S17/88 ,  G01S7/481 ,  G01S17/86 ,  H04N5/369 ,  A61B1/05 ,  A61B1/07 ,  A61B5/107 ,  G02B23/24 ,  G02B27/12 ,  G02B27/28

    Abstract: [Object] To acquire distance information concerning a living tissue through an endoscope with higher accuracy irrespective of the diameter of the endoscope.
    [Solution] An imaging device according to the present disclosure includes: a ranging light source section configured to output ranging light for measuring a distance at a predetermined timing; an image sensor on which an image of the imaging target is formed; a ranging light image sensor on which optical feedback of the ranging light from the imaging target is imaged; a branch optical system configured to coaxially branch incident light into three types of optical paths different from one another; and a distance information calculating section configured to calculate distance information concerning the imaging target on a basis of a result of detection of the optical feedback. In the branch optical system, a first optical path among the three types of optical paths is used as an optical path configured to guide the ranging light whose applied position on the imaging target has been controlled to the imaging target, a second optical path is used as an optical path configured to form an image of the imaging target on the image sensor, and a third optical path is used as an optical path configured to image the optical feedback on the ranging light image sensor. The distance information calculating section calculates a spaced distance to the imaging target by a Time Of Flight method on the basis of the result of detection of the optical feedback.

    Optical amplifier and optical amplifying method
    8.
    发明授权
    Optical amplifier and optical amplifying method 有权
    光放大器和光放大方法

    公开(公告)号：US09065250B2

    公开(公告)日：2015-06-23

    申请号：US14209857

    申请日：2014-03-13

    Applicant: Sony Corporation

    Inventor： Hiroshi Yoshida

    IPC: H01S5/10 ,  H01S5/323 ,  H01S5/50 ,  H01S3/23 ,  H01S5/065 ,  H01S5/14

    CPC classification number: H01S5/1064 ,  H01S3/2308 ,  H01S5/0657 ,  H01S5/1003 ,  H01S5/1039 ,  H01S5/1085 ,  H01S5/14 ,  H01S5/32341 ,  H01S5/50

    Abstract: There is provided an optical amplifier including a diffusing unit configured to be driven by a first current density and to increase a beam diameter of an incident laser beam that passes through a first waveguide that guides the laser beam, and an amplifying unit configured to be driven by a second current density that is higher than the first current density and to amplify intensity of the laser beam that passes through a second waveguide that guides the laser beam whose beam diameter has been increased by the diffusing unit. The first waveguide of the diffusing unit has a tapered shape in which a cross-sectional area of the first waveguide is gradually increased toward a travelling direction of the laser beam.

    Abstract translation: 提供了一种光放大器，包括漫射单元，其被配置为由第一电流密度驱动并且增加穿过引导激光束的第一波导的入射激光束的光束直径;以及放大单元，被配置为被驱动 通过比第一电流密度高的第二电流密度，并放大穿过引导其通过扩散单元增加光束直径的激光束的第二波导的激光束的强度。 漫射单元的第一波导具有锥形形状，其中第一波导的横截面积朝向激光束的行进方向逐渐增加。

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