11.
    发明专利
    未知

    公开(公告)号:ES2163240T3

    公开(公告)日:2002-01-16

    申请号:ES98402532

    申请日:1998-10-13

    Applicant: ESSILOR INT

    Abstract: The lens has an aspherical surface with a geometrical center, a reference point for near vision, and a virtually umbilical and vertical meridian line with a mean spherical and cylindrical value at each point. The area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of between 0.42 and 0.84 diopter is greater than the area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of less than 0.42 diopter.

    Ophthalmic lens
    12.
    发明专利

    公开(公告)号:AU8934498A

    公开(公告)日:1999-05-06

    申请号:AU8934498

    申请日:1998-10-15

    Applicant: ESSILOR INT

    Abstract: The lens has an aspherical surface with a geometrical center, a reference point for near vision, and a virtually umbilical and vertical meridian line with a mean spherical and cylindrical value at each point. The area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of between 0.42 and 0.84 diopter is greater than the area formed by points at a distance of less than 20 mm from the geometrical center and with a cylindrical value of less than 0.42 diopter.

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