System of progressive addition lens, design method of progressive addition lens, and progressive addition lens group

    公开(公告)号:US12124114B2

    公开(公告)日:2024-10-22

    申请号:US17281126

    申请日:2019-09-27

    Inventor: Tadashi Kaga

    CPC classification number: G02C7/061 G02C7/028

    Abstract: A design system of a progressive addition lens including a near portion for viewing a near distance, a distance portion for viewing a distance farther than the near distance, and an intermediate portion provided between the near portion and the distance portion and having a progressive refraction function, the design system of a progressive addition lens includes an aberration amount setting unit that sets an amount of transmission astigmatism Δβ[D] added to a progressive addition lens in such a way that when a wearer of the progressive addition lens α to which transmission astigmatism of an aberration amount Δα[D] is added is provided with the progressive addition lens β having different parameters, visual performance when the progressive addition lens β is worn approaches visual performance when the progressive addition lens α is worn.

    Spectacle lens and frame glasses
    2.
    发明授权

    公开(公告)号:US12111516B2

    公开(公告)日:2024-10-08

    申请号:US18563431

    申请日:2022-01-19

    CPC classification number: G02C7/022 G02C7/028 G02C2202/24

    Abstract: An optical zone forms a base surface of a spectacle lens and has a refractive power per a prescription. A functional zone surrounds a central optical zone of the spectacle lens and includes a plurality of functional sub-elements fitting with one another. Each of the functional sub-elements includes a first lens located in a central position and a plurality of second lenses around the first lens. Each of the second lenses has a surface shape of a regular polygon. The second lenses are in surface contact with one another via a surface where sides of the regular polygons are located. Wavefronts formed by the functional sub-elements can be superimposed on a working focal plane of the optical zone to form a uniform difussion circle that can form a blurred peripheral vision image. The spectacle lens can perform deep modulation for the imaging quality of the image plane on the retina.

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