OPHTHALMIC OBSERVATION APPARATUS
    31.
    发明公开

    公开(公告)号:US20230397809A1

    公开(公告)日:2023-12-14

    申请号:US18033802

    申请日:2020-12-09

    CPC classification number: A61B3/13 A61B3/15

    Abstract: An ophthalmic observation apparatus of an embodiment includes a microscope, a processor, and a display controller. The microscope includes a pair of photography systems and is configured to acquire a pair of pieces of moving image data of a subject's eye. The processor is configured to perform first processing including at least one of a control of the microscope and image processing applied to at least one of the pair of pieces of moving image data, such that a predetermined parameter of the pair of pieces of moving image data satisfies a first condition. The display controller is configured to display a pair of moving images based on the pair of pieces of moving image data produced by the first processing on a display device.

    OPHTHALMOLOGIC APPARATUS
    34.
    发明公开

    公开(公告)号:US20230309828A1

    公开(公告)日:2023-10-05

    申请号:US18126446

    申请日:2023-03-26

    CPC classification number: A61B3/18 A61B3/032 A61B3/103 A61B3/0058

    Abstract: An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.

    ELECTRO-OPTICAL DISTANCE METER
    35.
    发明公开

    公开(公告)号:US20230305151A1

    公开(公告)日:2023-09-28

    申请号:US18121391

    申请日:2023-03-14

    Inventor: Yasutoshi AOKI

    CPC classification number: G01S17/34 G01S7/4808 G01S7/4911 G01S7/4914

    Abstract: Provided is an electro-optical distance meter includes: a first light emitting element transmitting a distance measurement light modulated based on main modulation frequencies F2, F3 to a distance measurement optical path; a second light emitting element transmitting a reference light modulated with adjacent modulation frequencies F2+b·F2, F3+b·F3 close to the main modulation frequencies F2, F3 to a reference optical path; a light receiving element receiving a distance measurement light and a reference light; and frequency converters receiving inputting of a light reception signal based on the distance measurement light and the reference light and signals of local frequencies 2+a·F2, F3+a·F3, and generate a distance measurement intermediate frequency signal based on the distance measurement light and a reference intermediate frequency signal based on the reference light. A distance to a target reflection object is calculated by subtracting the reference intermediate frequency signal from the distance measurement intermediate frequency signal.

    Electro-optical distance meter
    36.
    发明授权

    公开(公告)号:US11754679B2

    公开(公告)日:2023-09-12

    申请号:US16365523

    申请日:2019-03-26

    CPC classification number: G01S7/4814 G01S17/10 G02B26/005

    Abstract: An electro-optical distance meter includes a light source configured to emit light for distance measurement, a detector configured to receive the light and generate a distance measurement signal, a calculator configured to measure the distance from the distance measurement signal, an external optical path configured to guide the light from the light source to a target as measurement light, an internal optical path configured to guide the light from the light source directly to the detector as reference light, and a liquid shutter that can select one of the external and internal optical paths as the optical path through which the light from the light source travels by switching a region of light-blocking liquid.

    Method and apparatus for low coherence interferometry

    公开(公告)号:US11751762B2

    公开(公告)日:2023-09-12

    申请号:US16719305

    申请日:2019-12-18

    Abstract: A low coherence imaging method comprises acquiring image data of an object with an interferometric imaging system, where the image data is from a location of the object at first and second times; determining a first depth profile from the image data from the location at the first time and a second depth profile from the image data of the location at the second time; determining a change with respect to depth between the first and second depth profiles; and determining a property, or identifying a location, of at least one dynamic particle in the object based on the change between the first and second depth profiles. The method is able to identify, analyze, and/or visualize dynamic particles with features comparable to at least fluorescein angiography, indocyanine green angiography, confocal scanning laser fluorescein angiography, confocal scanning laser indocyanine green angiography, and fluorescence microscopy images, without the use of a dye.

    FUNDUS OBSERVATION APPARATUS
    39.
    发明公开

    公开(公告)号:US20230277055A1

    公开(公告)日:2023-09-07

    申请号:US18197754

    申请日:2023-05-16

    CPC classification number: A61B3/12 A61B3/14 A61B3/102 A61B3/1025

    Abstract: A fundus observation apparatus includes an illumination optical system, a two-dimensional image sensor, and a deflecting member. The illumination optical system is configured to illuminate a fundus of a subject's eye with line-shaped illumination light. The two-dimensional image sensor is configured to receive returning light of the illumination light from the fundus on a movable focal plane at a position substantially conjugate optically to the fundus. The deflecting member is configured to couple an optical path of the illumination light and an optical path of the returning light and to scan the fundus with the illumination light by deflecting the illumination light in synchronization with a movement of the focal plane. The deflecting member has a configuration that allows the returning light to be transmitted through a first region and to reflect the illumination light in a second region different from the first region.

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