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120 条记录 (耗时 0.026 秒)

    Polyvinyl pyridine microspheres
    2.
    发明授权
    Polyvinyl pyridine microspheres 失效
    聚乙烯吡啶微球

    公开(公告)号：US4224359A

    公开(公告)日：1980-09-23

    申请号：US947478

    申请日：1978-10-02

    申请人： Alan Rembaum ,  Amitava Gupta ,  Willi Volksen

    发明人： Alan Rembaum ,  Amitava Gupta ,  Willi Volksen

    IPC分类号： C08F2/46 ,  C08F226/06

    CPC分类号： C08F226/06 ,  Y10T428/252

    摘要： Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

    摘要翻译： 微球通过稀释的乙烯基吡啶水溶液的钴γ射线引发聚合产生。 添加交联剂提供更高的表面积珠。 添加单体如甲基丙烯酸羟乙酯丙烯酰胺或甲基丙烯酰胺增加了珠的亲水性能和表面积。 在受控孔隙玻璃基板的存在下形成高表面积催化载体。

    Fluid lens assembly
    5.
    发明授权
    Fluid lens assembly 失效
    流体透镜组件

    公开(公告)号：US08760767B2

    公开(公告)日：2014-06-24

    申请号：US13404914

    申请日：2012-02-24

    申请人： Amitava Gupta ,  Urban Schnell ,  Karim Haroud ,  Hans Jaeger

    发明人： Amitava Gupta ,  Urban Schnell ,  Karim Haroud ,  Hans Jaeger

    IPC分类号： G02B1/06 ,  G02B3/12 ,  G02C7/02

    CPC分类号： G02B3/14 ,  G02B3/04 ,  G02B3/06 ,  G02B27/0025 ,  G02C7/085 ,  G02C2202/16

    摘要： A non-round fluid lens assembly includes a non-round rigid lens and a flexible membrane attached to the non-round rigid lens, such that a cavity is formed between the non-round rigid lens and the flexible membrane. A reservoir in fluid communication with the cavity allows a fluid to be transferred into and out of the cavity so as to change the optical power of the fluid lens assembly. In an embodiment, a front surface of the non-round rigid lens is aspheric. Additionally or alternatively, a thickness of the flexible membrane may be contoured so that it changes shape in a spheric manner when fluid is transferred between the cavity and the reservoir.

    摘要翻译： 非圆形透镜组件包括非圆形刚性透镜和附接到非圆形刚性透镜的柔性膜，使得在非圆形刚性透镜和柔性膜之间形成空腔。 与空腔流体连通的储存器允许将流体转移到腔体中并流出空腔，以便改变流体透镜组件的光学功率。 在一个实施例中，非圆形刚性透镜的前表面是非球面的。 附加地或替代地，柔性膜的厚度可以是轮廓，使得当流体在空腔和储存器之间转移时，其可以以球形的方式改变形状。

    Opthalmic lens with regressive and non-regressive rotationally symmetric optical design elements
    7.
    发明授权
    Opthalmic lens with regressive and non-regressive rotationally symmetric optical design elements 有权
    具有回归和非回归旋转对称光学设计元件的光学透镜

    公开(公告)号：US08573774B2

    公开(公告)日：2013-11-05

    申请号：US12902213

    申请日：2010-10-12

    申请人： Amitava Gupta ,  Ronald Blum ,  Stefan Troller ,  Hans Jaeger ,  Julien Sauvet ,  Urban Schnell

    发明人： Amitava Gupta ,  Ronald Blum ,  Stefan Troller ,  Hans Jaeger ,  Julien Sauvet ,  Urban Schnell

    IPC分类号： G02C7/00 ,  G02C7/02 ,  G02C7/06

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

    摘要： Aspects of the present invention provide an ophthalmic lens comprising at least one regressive and at least one non-regressive rotationally symmetric optical design element. The regressive and non-regressive optical design elements can be combined so as to form a desired optical power profile for the lens while simultaneously exploiting the different relative orientation of the astigmatic vectors of the constituent regressive and non-regressive design elements, thereby resulting in reduced unwanted astigmatism. The regressive and non-regressive rotationally symmetric optical design elements can be positioned on different lens surfaces and in optical communication or can be collapsed onto the same lens surface. The regressive and non-regressive rotationally symmetric optical design elements can each contribute to the total add power of an ophthalmic lens. The regressive and non-regressive rotationally symmetric optical design elements can be combined with any other optical design feature positioned on the same or a different surface of the lens.

    摘要翻译： 本发明的方面提供一种眼科镜片，其包括至少一个回归和至少一个非回归旋转对称的光学设计元件。 回归和非回归光学设计元件可以组合以形成用于透镜的期望的光学功率分布，同时利用构成回归和非回归设计元件的散光矢量的不同相对取向，从而导致减少 有害散光。 回归和非回归旋转对称光学设计元件可以位于不同的透镜表面上并且在光学通信中或可以折叠到相同的透镜表面上。 回归和非回归的旋转对称光学设计元素可以各自贡献于眼科镜片的总添加功率。 回归和非回归的旋转对称光学设计元件可以与位于透镜的相同或不同表面上的任何其它光学设计特征组合。

    Fluid Lens Assembly
    9.
    发明申请
    Fluid Lens Assembly 失效
    流体镜头组件

    公开(公告)号：US20120154925A1

    公开(公告)日：2012-06-21

    申请号：US13404914

    申请日：2012-02-24

    申请人： Amitava Gupta ,  Urban Schnell ,  Karim Haroud ,  Hans Jaeger

    发明人： Amitava Gupta ,  Urban Schnell ,  Karim Haroud ,  Hans Jaeger

    IPC分类号： G02B3/14

    CPC分类号： G02B3/14 ,  G02B3/04 ,  G02B3/06 ,  G02B27/0025 ,  G02C7/085 ,  G02C2202/16

    摘要： A non-round fluid lens assembly includes a non-round rigid lens and a flexible membrane attached to the non-round rigid lens, such that a cavity is formed between the non-round rigid lens and the flexible membrane. A reservoir in fluid communication with the cavity allows a fluid to be transferred into and out of the cavity so as to change the optical power of the fluid lens assembly. In an embodiment, a front surface of the non-round rigid lens is aspheric. Additionally or alternatively, a thickness of the flexible membrane may be contoured so that it changes shape in a spheric manner when fluid is transferred between the cavity and the reservoir.

    摘要翻译： 非圆形透镜组件包括非圆形刚性透镜和附接到非圆形刚性透镜的柔性膜，使得在非圆形刚性透镜和柔性膜之间形成空腔。 与空腔流体连通的储存器允许将流体转移到腔体中并流出空腔，以便改变流体透镜组件的光学功率。 在一个实施例中，非圆形刚性透镜的前表面是非球面的。 附加地或替代地，柔性膜的厚度可以是轮廓，使得当流体在空腔和储存器之间转移时，其可以以球形的方式改变形状。

    PROGRESSIVE ADDITION LENS DESIGN
    10.
    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。