APPARATUS AND METHOD FOR AUTOMATED NON-CONTACT EYE EXAMINATION

    公开(公告)号:US20220225876A1

    公开(公告)日:2022-07-21

    申请号:US17715457

    申请日:2022-04-07

    摘要: An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.

    Apparatus and method for automated non-contact eye examination

    公开(公告)号:US11324400B2

    公开(公告)日:2022-05-10

    申请号:US17321409

    申请日:2021-05-15

    摘要: An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.

    APPARATUS AND METHOD FOR AUTOMATED NON-CONTACT EYE EXAMINATION

    公开(公告)号:US20220007934A1

    公开(公告)日:2022-01-13

    申请号:US17321409

    申请日:2021-05-15

    摘要: An eye measurement system includes an optical system. The eye measurement system is disposed in a housing which includes an aperture for providing light to and from the optical system and a subject's eye while the subject is separated and spaced apart from the housing, and the eye is not maintained in a fixed positional relationship with respect to the housing. An optical system movement arrangement moves the optical system. An automatic eye tracking arrangement ascertains a current positional relationship of the eye with respect to the optical system without human assistance, and in response thereto controls the optical system movement arrangement to move the optical system into a predetermined positional relationship with respect to the eye, for measurement of the eye, without human assistance. The eye measurement system can make objective, and/or subjective, refraction measurements of the eye.

    Method of high pass filtering a data set
    8.
    发明授权
    Method of high pass filtering a data set 有权
    数据集高通滤波方法

    公开(公告)号:US06790688B2

    公开(公告)日:2004-09-14

    申请号:US10252416

    申请日:2002-09-24

    IPC分类号: H01L2166

    摘要: An improved method of high pass filtering a data set includes flattening the data set and then filtering the flattened data set with an adaptive filter. The data set is flattened by fitting it to a predetermined function, and then obtaining the difference between the original data set and the fitted data set. Beneficially, the predetermined function is a polynomial. The adaptive filter includes a masking function that has a constant, non-zero value (e.g., 1) within the bounds of the original data set and value of zero outside the bounds of the original data set.

    摘要翻译: 数据集的高通滤波的改进方法包括对数据集进行平坦化,然后用自适应滤波器对平坦化数据集进行滤波。 数据集通过将其拟合到预定的功能而变平,然后获得原始数据集和拟合数据集之间的差异。 有利地,预定函数是多项式。 自适应滤波器包括掩蔽函数,其在原始数据集的边界内具有恒定的非零值(例如,1),并且在原始数据集的边界之外的零值。