PORTABLE RETINA MEASURING DEVICE, AND OPHTHALMOLOGIC DISEASE MEASURING SYSTEM AND OPHTHALMOLOGIC DISEASE MANAGEMENT METHOD USING PORTABLE TERMINAL

    公开(公告)号:US20230301512A1

    公开(公告)日:2023-09-28

    申请号:US18019799

    申请日:2020-10-21

    申请人: AIFORPET

    IPC分类号: A61B3/14 A61B3/12

    摘要: Disclosed are a portable retina measuring device, and an ophthalmologic disease measuring system and an ophthalmologic disease management method using the portable terminal. The portable retina measuring device comprises: a photographing unit which obtains a photographed image by photographing the retina of a photography subject; and a device control unit which uses the obtained photographed image to generate measurement result data, wherein the photography unit comprises a flat light source irradiation unit, the flat light source irradiation unit comprising: a light source unit that generates a light source for the photography subject; a grid that is located so as to face the light source unit and has a grid pattern; and a photographing element that is located in the center of the grid.

    WIDE-ANGLE PUPIL RELAY FOR CELLPHONE-BASED FUNDUS CAMERA

    公开(公告)号:US20230270328A1

    公开(公告)日:2023-08-31

    申请号:US18143916

    申请日:2023-05-05

    申请人: NIKON CORPORATION

    摘要: An optical imaging system includes a first lens system housed in a body of a mobile telecommunication device, the first lens system having a first optical axis, a first entrance pupil fixed in space in a reference plane associated with said body, and a first focal length; and an optical telescope providing a diffraction-limited imaging within a spectral range from at least 486 nm to at least 656 nm. The optical imaging system is configured to image, when the optical telescope is inserted between the first lens system and an entrance pupil of a visual system of an eye (EPE), the EPE onto the first entrance pupil and vice versa with a substantially unit magnification.

    Ophthalmic Lens Doublet for Ophthalmoscopy
    4.
    发明申请

    公开(公告)号:US20190076019A1

    公开(公告)日:2019-03-14

    申请号:US15699469

    申请日:2017-09-08

    申请人: Arkadiy Farberov

    发明人: Arkadiy Farberov

    IPC分类号: A61B3/12 G02B3/04

    摘要: Proposed is an ophthalmic lens doublet for indirect ophthalmoscopy. The doublet is cemented into an integral unit from two lens elements, of which is a convex-convex lens element and another is a convex-concave lens element. Both lens elements have external and internal surfaces and may be combined so that the ophthalmic lens doublet has asphericity either on one side or on both sides of the unit. The aspheric surface is characterized by asphericity Z of the following formula (1) Z=Y2/{R+[R2−(1+k)Y2]1/2}  (1), where Z is in one of coordinates in a Cartesian coordinate system, Y is a second coordinate in the Cartesian coordinate system, R and k being variable parameters which are different for each selected values of d, where d is an outer diameter of the ophthalmic lens doublet.

    Contact-type ophthalmoscope
    9.
    发明授权

    公开(公告)号:US09770166B2

    公开(公告)日:2017-09-26

    申请号:US14680625

    申请日:2015-04-07

    摘要: A contact-type ophthalmoscope includes a contact lens, an annular illumination module, an imaging lens group and an image capture module. The contact lens having a concave surface is configured for contacting an eyeball. The annular illumination module arranged close to the contact lens is configured for providing a direct illumination light source to illuminate a fundus of the eyeball. The imaging lens group is disposed in the central hollow portion of the annular illumination module and configured for converging the reflected light from the fundus of the eyeball. The image capture module is configured for capturing the reflected light converged by the imaging lens group to form an image. The above-mentioned contact-type ophthalmoscope has advantages of better illumination efficiency, compactness and less scattered light reflected from the imaging lens.