Method and device for measuring an optical lens for individual wearing situations by a user

    公开(公告)号:US11047765B2

    公开(公告)日:2021-06-29

    申请号:US17074710

    申请日:2020-10-20

    Abstract: A device for measuring the optical effect of an ophthalmic lens, in particular a spectacle lens, includes a display system, an image acquisition system, and a computer unit. During measurement, the lens is arranged in a measurement volume of the device. The display system displays a test structure and the image acquisition system acquires image data of the test structure from multiple viewpoints using imaging optical paths which pass through the lens. The computer unit determines the three-dimensional shape of the lens on the basis of the image data and calculates an optical effect of the lens on the basis of its three-dimensional shape. A corresponding method and computer program are also disclosed.

    METHOD AND DEVICE FOR MEASURING AN OPTICAL LENS FOR INDIVIDUAL WEARING SITUATIONS BY A USER

    公开(公告)号:US20210325276A1

    公开(公告)日:2021-10-21

    申请号:US17327344

    申请日:2021-05-21

    Abstract: An apparatus for measuring a cornea of a subject contains an image capturing device configured to capture image data of an iris of the subject from a plurality of viewpoints by imaging beam paths which pass through the cornea and a computing unit for providing a mathematical model of an anterior eye section of the subject including a mathematical model of the cornea and the iris. The model further identifies and registers image features of the iris, which are present in a plurality of images of the image data; determines deviations between actual positions of the image features of the iris in the images captured from the plurality of viewpoints and expected positions of the image features of the iris in the images captured from the plurality of viewpoints in consideration of the mathematical model of the cornea and the position of the iris.

    MEASURING INDIVIDUAL DATA OF SPECTACLES
    5.
    发明申请

    公开(公告)号:US20180120198A1

    公开(公告)日:2018-05-03

    申请号:US15852899

    申请日:2017-12-22

    Abstract: An apparatus and a method for measuring individual data of spectacles arranged in a measurement position are disclosed. The spectacles have a left and/or a right spectacle lens. The apparatus has a display for displaying a test structure. The apparatus contains an image capture device for capturing the test structure with an imaging beam path which passing through the left spectacle lens and/or the right spectacle lens of the spectacles. Further, the apparatus includes a computer unit with a computer program for determining a refractive power distribution for at least a section of the left spectacle lens and/or the right spectacle lens from the image of the test structure captured by the image capture device and a known spatial orientation of the display relative to the image capture device. To measure individual data of spectacles, the spectacles are arranged in a measurement position.

    Measuring individual data of spectacles

    公开(公告)号:US11408798B2

    公开(公告)日:2022-08-09

    申请号:US16687856

    申请日:2019-11-19

    Abstract: An apparatus and a method for measuring individual data of spectacles arranged in a measurement position are disclosed. The spectacles have a left and/or a right spectacle lens. The apparatus has a display for displaying a test structure. The apparatus contains an image capture device for capturing the test structure with an imaging beam path which passing through the left spectacle lens and/or the right spectacle lens of the spectacles. Further, the apparatus includes a computer unit with a computer program for determining a refractive power distribution for at least a section of the left spectacle lens and/or the right spectacle lens from the image of the test structure captured by the image capture device and a known spatial orientation of the display relative to the image capture device. To measure individual data of spectacles, the spectacles are arranged in a measurement position.

    METHOD AND DEVICE FOR MEASURING THE LOCAL REFRACTIVE POWER AND/OR REFRACTIVE POWER DISTRIBUTION OF A SPECTACLE LENS

    公开(公告)号:US20220035183A1

    公开(公告)日:2022-02-03

    申请号:US17504905

    申请日:2021-10-19

    Abstract: The local refractive power or the refractive power distribution of a spectacle lens is measured. A first image of a scene having a plurality of structure points and a left and/or a right spectacle lens of a frame front is captured with an image capturing device from a first capture position having an imaging beam path for structure points, which extends through the spectacle lens of the frame front. At least two further images of the scene are captured with the image capturing device from different capture positions, one of which can be identical with the first capture position, without the spectacle lenses of the spectacles or without the frame front containing the spectacle lenses having the structure points imaged in the first image, and the coordinates of the structure points in a coordinate system are calculated from the at least two further images of the scene by image analysis.

    METHOD AND DEVICE FOR MEASURING AN OPTICAL LENS FOR INDIVIDUAL WEARING SITUATIONS BY A USER

    公开(公告)号:US20210033489A1

    公开(公告)日:2021-02-04

    申请号:US17074710

    申请日:2020-10-20

    Abstract: A device for measuring the optical effect of an ophthalmic lens, in particular a spectacle lens, includes a display system, an image acquisition system, and a computer unit. During measurement, the lens is arranged in a measurement volume of the device. The display system displays a test structure and the image acquisition system acquires image data of the test structure from multiple viewpoints using imaging optical paths which pass through the lens. The computer unit determines the three-dimensional shape of the lens on the basis of the image data and calculates an optical effect of the lens on the basis of its three-dimensional shape. A corresponding method and computer program are also disclosed.

    Method and device for measuring the local refractive power and/or refractive power distribution of a spectacle lens

    公开(公告)号:US11982878B2

    公开(公告)日:2024-05-14

    申请号:US17504905

    申请日:2021-10-19

    CPC classification number: G02C13/005 G01M11/0228 G06T7/73

    Abstract: The local refractive power or the refractive power distribution of a spectacle lens is measured. A first image of a scene having a plurality of structure points and a left and/or a right spectacle lens of a frame front is captured with an image capturing device from a first capture position having an imaging beam path for structure points, which extends through the spectacle lens of the frame front. At least two further images of the scene are captured with the image capturing device from different capture positions, one of which can be identical with the first capture position, without the spectacle lenses of the spectacles or without the frame front containing the spectacle lenses having the structure points imaged in the first image, and the coordinates of the structure points in a coordinate system are calculated from the at least two further images of the scene by image analysis.

    Method and device for measuring an optical lens for individual wearing situations by a user

    公开(公告)号:US11099100B2

    公开(公告)日:2021-08-24

    申请号:US17074710

    申请日:2020-10-20

    Abstract: A device for measuring the optical effect of an ophthalmic lens, in particular a spectacle lens, includes a display system, an image acquisition system, and a computer unit. During measurement, the lens is arranged in a measurement volume of the device. The display system displays a test structure and the image acquisition system acquires image data of the test structure from multiple viewpoints using imaging optical paths which pass through the lens. The computer unit determines the three-dimensional shape of the lens on the basis of the image data and calculates an optical effect of the lens on the basis of its three-dimensional shape. A corresponding method and computer program are also disclosed.

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