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    Impregnation of plastic substrates with photochromic additives
    2.
    发明授权
    Impregnation of plastic substrates with photochromic additives 失效
    用光致变色添加剂浸渍塑料基材

    公开(公告)号：US5851585A

    公开(公告)日：1998-12-22

    申请号：US970579

    申请日：1997-11-14

    申请人： Amitava Gupta ,  Ronald D. Blum ,  Venkatramani S. Iyer

    发明人： Amitava Gupta ,  Ronald D. Blum ,  Venkatramani S. Iyer

    IPC分类号： C08J7/06 ,  B05D5/06

    CPC分类号： C08J7/065

    摘要： The present invention relates to new methods of impregnating plastic substrates with photochromic additives. By impregnating the plastic substrate in multiple impregnation steps under varying conditions, the concentration profile of two or more photochromic additive within the plastic substrate can be independently controlled. Methods are also provided for the distribution of a photochromic additive in a high boiling solvent and for increasing the glass transition temperature of a partially cured polymeric resin.

    摘要翻译： 本发明涉及用光致变色添加剂浸渍塑料基材的新方法。 通过在不同的条件下在多个浸渍步骤中浸渍塑料基材，可以独立地控制塑料基材内两种或多种光致变色添加剂的浓度分布。 还提供了用于在高沸点溶剂中分配光致变色添加剂并提高部分固化的聚合物树脂的玻璃化转变温度的方法。

    PROGRESSIVE ADDITION LENS DESIGN
    9.
    发明申请
    PROGRESSIVE ADDITION LENS DESIGN 有权
    渐进式镜片设计

    公开(公告)号：US20110116037A1

    公开(公告)日：2011-05-19

    申请号：US12848713

    申请日：2010-08-02

    申请人： Amitava Gupta ,  Ronald D. Blum

    发明人： Amitava Gupta ,  Ronald D. Blum

    IPC分类号： G02C7/06

    CPC分类号： G02C7/061 ,  G02C7/066

    摘要： Aspects of the present invention provide progressive addition lenses (PALs) and techniques for designing PALs that result in improved visual performance for the wearer. PALs of the present invention can have vision zones with widths that are more in line with the actual or functional sizes used by wearers. PALs of the present invention can also introduce controlled amounts of unwanted astigmatism into one or more vision zones. By allowing vision zones to include manageable levels of astigmatism, the resulting PAL can avoid the harsh build-up of astigmatism typically found in conventional PALs at the periphery of the channel and viewing zones. Further, PALs of the present invention can be designed using a merit function to achieve an optimized iterative design that accounts for astigmatism vector orientation and not simply astigmatism magnitude as is the case with conventional PAL design.

    摘要翻译： 本发明的方面提供渐进式附加镜片（PAL）和用于设计PAL的技术，其导致改善了佩戴者的视觉性能。 本发明的PAL可以具有宽度与佩戴者使用的实际或功能尺寸更一致的视野区域。 本发明的PAL还可以将受控量的有害散光引入一个或多个视区。 通过允许视野区域包括可管理的像散水平，所得到的PAL可以避免通常在通道周边和观看区域的常规PAL中发现的散光的严酷的积聚。 此外，本发明的PAL可以使用优点函数来设计，以实现考虑散光矢量取向的优化迭代设计，而不是像传统PAL设计的情况那样简单的像散大小。

    OPHTHALMIC LENSES WITH ASPHERIC OPTICAL FEATURES
    10.
    发明申请
    OPHTHALMIC LENSES WITH ASPHERIC OPTICAL FEATURES 有权
    具有多功能光学特征的眼镜

    公开(公告)号：US20100201941A1

    公开(公告)日：2010-08-12

    申请号：US12702791

    申请日：2010-02-09

    申请人： Amitava Gupta ,  Ronald D. Blum

    发明人： Amitava Gupta ,  Ronald D. Blum

    IPC分类号： G02C7/06 ,  G02C7/02

    CPC分类号： G02C7/061 ,  G02C7/063 ,  G02C7/068 ,  G02C2202/16

    摘要： Aspects of the present invention provide a lens comprising a non-rotationally symmetric aspheric optical element, surface or feature and a rotationally symmetric aspheric optical element, surface or feature. The non-rotationally symmetric aspheric optical feature can be a progressive power region. The non-rotationally symmetric aspheric optical feature and rotationally symmetric aspheric optical feature can be in optical communication when located on different surfaces of a lens or can be collapsed to occupy a single surface of a lens. The non-rotationally symmetric aspheric optical feature and rotationally symmetric aspheric optical feature can each contribute to the add power of a lens. Distortion (e.g., astigmatism) of a lens of the present invention can be reduced (e.g., globally and/or locally) by optically combing the non-rotationally symmetric aspheric optical feature with the rotationally symmetric aspheric optical feature. Accordingly, the effective or useable vision zones of a lens of the present invention can be increased.

    摘要翻译： 本发明的方面提供一种包括非旋转对称非球面光学元件，表面或特征以及旋转对称的非球面光学元件，表面或特征的透镜。 非旋转对称非球面光学特征可以是渐进光焦度区域。 当位于透镜的不同表面上时，非旋转对称非球面光学特征和旋转对称非球面光学特征可以是光学通信的，或者可以折叠以占据透镜的单个表面。 非旋转对称的非球面光学特征和旋转对称的非球面光学特征可以各自有助于透镜的附加功率。 通过将非旋转对称非球面光学特征与旋转对称的非球面光学特征光学地组合，可以减小（例如，全局和/或局部地）本发明的透镜的变形（例如散光）。 因此，可以提高本发明的透镜的有效或可用的视野区域。