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    Aspheric toric lens designs
    6.
    发明授权
    Aspheric toric lens designs 失效
    非球面复曲面透镜设计

    公开(公告)号：US5796462A

    公开(公告)日：1998-08-18

    申请号：US708362

    申请日：1996-09-04

    申请人： Jeffrey H. Roffman ,  Edgar V. Menezes

    发明人： Jeffrey H. Roffman ,  Edgar V. Menezes

    IPC分类号： G02C7/02 ,  B29D11/00 ,  G02B3/06 ,  G02B13/00 ,  G02B13/18 ,  G02C7/04 ,  A61F2/16

    CPC分类号： A61F2/1613 ,  G02C7/044 ,  G02C2202/02

    摘要： Aspheric toric lens designs are disclosed which reduce the number of cylindrical axis locations required for stock keeping units in inventory by aspherizing the toric surface thereof. The present invention pertains to ophthalmic lenses, and in particular to contact lenses such as soft hydrogel contact lenses, particularly designed to fit astigmatic patients who are either non-presbyopic or presbyopic. One of the front and back surfaces of the aspheric toric lens defines a spherical surface corresponding at least to the patient's basic distance prescription Rx. The other of the front and back surfaces defines an aspheric toric curve, wherein the toric surface is constructed with aspheric radii, such that the aspheric curve desensitizes axial misalignment of the toric curve by providing an enhanced depth-of-focus. When the aspheric toric surface is on the back surface of the lens, the spherical curve on the front surface of the lens can comprise a single spherical curve corresponding to the patient's basic distance prescription Rx. When the aspheric toric curve is on the front surface of the lens, the spherical curve on the back surface of the lens can comprise a multifocus concentric annular ring spherical surface design.

    摘要翻译： 公开了非球面复曲面透镜设计，其减少库存中的库存单元所需的圆柱形轴位置的数量，其通过使其复曲面进行非球面化。 本发明涉及眼用镜片，特别是涉及隐形眼镜，例如软水凝胶隐形眼镜，特别设计用于适合非老花眼或老花眼的散光患者。 非球面复曲面透镜的前表面和背面中的一个限定了至少对应于患者的基本距离处方Rx的球面。 前表面和后表面中的另一个限定非球面复曲面曲线，其中复曲面表面构造有非球面半径，使得非球面曲线通过提供增强的聚焦深度使得复曲面曲线的轴向未对准脱敏。 当非球面复曲面位于透镜的后表面上时，透镜前表面上的球形曲线可以包括对应于患者的基本距离处方Rx的单个球形曲线。 当非球面复曲面曲线在透镜的前表面上时，透镜后表面上的球形曲线可以包括多焦点同心环形球形球面设计。

    Concentric aspheric multifocal lens designs
    7.
    发明授权
    Concentric aspheric multifocal lens designs 失效
    同心非球面多焦点透镜设计

    公开(公告)号：US5715031A

    公开(公告)日：1998-02-03

    申请号：US433736

    申请日：1995-05-04

    申请人： Jeffrey H. Roffman ,  Edgar V. Menezes

    发明人： Jeffrey H. Roffman ,  Edgar V. Menezes

    IPC分类号： B29D11/00 ,  G02B3/08 ,  G02C7/04 ,  G02C7/06 ,  A61F2/16 ,  G02C7/02

    CPC分类号： G02C7/028 ,  G02C7/042 ,  G02C7/044 ,  G02C7/06

    摘要： Concentric aspheric multifocal lens designs are disclosed which use a combination of an aspheric front surface, which results in aberration reduction and contrast vision enhancement, along with a concentric multifocal back surface, to produce a lens design which affords clear vision at a distance and also near without a loss in contrast which is generally typical of prior art simultaneous vision, concentric multifocal lens designs. The aspheric surface improves the modulation transfer function (MTF) of the lens eye combination which improves the focus and contrast of both distance and near images. The design form is valid for contact lenses and intraocular lenses.

    摘要翻译： 公开了同心非球面多焦点透镜设计，其使用非球面前表面的组合，其导致像差减小和对比度视觉增强以及同心多焦点背面，以产生透镜设计，其在远处甚至近处提供清晰的视觉 没有相反的损失，其通常是现有技术的同时视觉，同心多焦点透镜设计的典型。 非球面改善了眼镜组合的调制传递函数（MTF），改善了距离和近距离图像的聚焦和对比度。 设计形式适用于隐形眼镜和眼内镜。