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120 条记录 (耗时 0.047 秒)

    Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses
    51.
    发明授权
    Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses 失效
    制造复曲面单视，球形或非球面双焦点，多焦点或渐进隐形眼镜的方法

    公开(公告)号：US5517259A

    公开(公告)日：1996-05-14

    申请号：US225386

    申请日：1994-04-08

    申请人： Ronald D. Blum ,  Amitava Gupta

    发明人： Ronald D. Blum ,  Amitava Gupta

    IPC分类号： B29D11/00 ,  G02C7/04

    CPC分类号： B29D11/00769 ,  B29D11/00086 ,  B29D11/00519 ,  G02C7/021 ,  G02C7/041 ,  G02C7/048 ,  B29L2011/0025 ,  B29L2011/0033 ,  G02C2202/20

    摘要： Methods for providing a contact lens are described. According to a first embodiment, a patient is fitted with an optical preform and the position on the surface of the optical preform corresponding to the center location of the patients's pupil is identified. Then, the optical preform, a volume of polymerizable resin, and a mold comprising a casting zone are arranged, so that the resin occupies at least the intervening space between the mold and the optical preform in the area of the casting zone and so that the casting zone on the mold is aligned to a predetermined position with respect to the position on the surface of the optical preform corresponding to the center of the patient's pupil. Finally, the resin is polymerized to provide a contact lens with an optical modification corresponding to the casting zone. According to another embodiment, a mold having a weight or stabilization zone is selected to provide a resin mass on an optical preform (which can be, for example, toric, bifocal or multifocal, and so forth) sufficient to stabilize the optical preform. The resin mass is provided in a position based, for example, on the axis of cylinder of the finished lens, the orientation of the bifocal/multifocal region on the finished lens, and so on.

    摘要翻译： 描述了提供隐形眼镜的方法。 根据第一实施例，患者装配有光学预成型件，并且识别与患者瞳孔的中心位置相对应的光学预制件的表面上的位置。 然后，配置光学预型件，一定体积的可聚合树脂和包括铸造区域的模具，使得树脂在铸造区域中至少占据模具和光学预制件之间的间隔空间，并且使得 相对于与病人瞳孔的中心对应的光学预型件的表面上的位置，将模具上的铸造区域对准到预定位置。 最后，树脂被聚合以提供对应于铸造区域的光学修饰的隐形眼镜。 根据另一个实施例，选择具有重量或稳定区域的模具以在足以稳定光学预型件的光学预制件（可以是例如复曲面，双焦点或多焦点等）上提供树脂块。 树脂质量被设置在例如在成品透镜的圆筒的轴线上的位置，成品透镜上的双焦点/多焦点区域的取向等。

    Photocurable acrylic composition, and U.V. curing with development of U.V. absorber
    52.
    发明授权
    Photocurable acrylic composition, and U.V. curing with development of U.V. absorber 失效
    光固化丙烯酸组合物和U.V. 固化与紫外线的发展 吸收器

    公开(公告)号：US5141990A

    公开(公告)日：1992-08-25

    申请号：US477357

    申请日：1989-10-25

    申请人： Vincent B. McKoy ,  Amitava Gupta

    发明人： Vincent B. McKoy ,  Amitava Gupta

    IPC分类号： C08F2/50 ,  C08F8/10 ,  G03F7/027

    CPC分类号： G03F7/027 ,  C08F2/50 ,  Y10S522/907

    摘要： In-situ development of an ultraviolet absorber is provided by a compound such as a hydroxy-phenyl-triazole containing a group which protects the absorber during actinically activated polymerization by light at first frequency. After polymerization the protective group is removed by actinic reaction at a second frequency lower than the first frequency. The protective group is formed by replacing the hydrogen of the hydroxyl group with an acyl group containing 1 to 3 carbon atoms or an acryloxy group of the formula: ##STR1## where R.sup.1 is either an alkyl containing 1 to 6 carbon atoms or --CH.dbd.CH.sub.2.

    摘要翻译： 紫外线吸收剂的原位开发由含有在第一频率的光进行光化活化聚合时保护吸收体的基团的羟基苯基三唑等化合物提供。 聚合后，通过光化反应以低于第一频率的第二频率除去保护基。 保护基是通过用含有1至3个碳原子的酰基取代羟基的氢或下式的丙烯氧基形成的：其中R 1是含有1至6个碳原子的烷基或-CH = CH2。

    Multifocal intraocular lenses
    53.
    发明授权
    Multifocal intraocular lenses 失效
    多功能眼科镜片

    公开(公告)号：US5112351A

    公开(公告)日：1992-05-12

    申请号：US596681

    申请日：1990-10-12

    申请人： Bruce Christie ,  Amitava Gupta

    发明人： Bruce Christie ,  Amitava Gupta

    IPC分类号： A61F2/16 ,  G02C7/04 ,  G02C7/06

    CPC分类号： A61F2/1618

    摘要： A multifocal intraocular lens is produced which comprises a lens body having a plurality of optical zones which comprises an aspheric optical zone between each add and base power zone thereby providing a gradual transition in the curvature of the optic surface and avoiding abrupt changes in the curvature of the optic.

    Contact lenses
    54.
    发明授权
    Contact lenses 失效
    隐形眼镜

    公开(公告)号：US5106930A

    公开(公告)日：1992-04-21

    申请号：US383802

    申请日：1989-07-21

    申请人： Amitava Gupta

    发明人： Amitava Gupta

    IPC分类号： G02C7/04 ,  C08L27/12 ,  G02B1/04

    CPC分类号： G02B1/043

    摘要： A contact lens material which is lipophobic, easily machined and is oxygen permeable which comprises a copolymer comprising from 25% to 50% by weight of a polysiloxanylalkyl ester of acrylic or methacrylic acid, from 40% to 69% by weight of a fluorinated styrene, from 4% to 7% of a hydrophilic monomer, from 2% to 5% of a suitable cross-linking agent and from 0% to 2% of a UV absorber.

    Method of forming single-piece intraocular lens and core member and lens formed thereby
    55.
    发明授权
    Method of forming single-piece intraocular lens and core member and lens formed thereby 失效
    形成单片眼内透镜和由其形成的芯部件和透镜的方法

    公开(公告)号：US4813956A

    公开(公告)日：1989-03-21

    申请号：US34349

    申请日：1987-04-03

    申请人： Amitava Gupta

    发明人： Amitava Gupta

    IPC分类号： A61L27/00 ,  A61F2/16 ,  A61L27/16 ,  A61L27/50 ,  B29D11/02 ,  B29D11/00

    CPC分类号： B29D11/023 ,  A61F2/16 ,  A61L27/14 ,  A61L27/16 ,  A61L27/50 ,  A61L2430/16 ,  Y10S623/901

    摘要： A method of forming single-piece intraocular lenses comprising the steps of forming a thin sheet of colored polymethyl methacrylate, coring the sheet to form holes therein, filling the holes with a clear or differently colored PMMA material, polymerizing the colored and clear or differently colored PMMA material comprising the sheet and filled holes, cutting core members from the polymerized sheet each having an inner circular region of PMMA material and an outer region of colored PMMA material and machining a single-piece intraocular lens from a core member to have a central lens body of PMMA material and colored PMMA positioning loops extending from and integral with the central lens body.

    摘要翻译： 一种形成单件式眼内透镜的方法，包括以下步骤：形成着色的聚甲基丙烯酸甲酯薄片，使片材取芯，在其中形成孔，用透明或不同颜色的PMMA材料填充孔，聚合有色和透明或不同颜色的 包括片材和填充孔的PMMA材料，从聚合片材切割芯片，每个聚合片材均具有PMMA材料的内圆形区域和着色的PMMA材料的外部区域，并且从芯部件加工单件眼内透镜以具有中心透镜 PMMA材料的主体和从中心透镜主体延伸并与之成一体的彩色PMMA定位环。

    REDUCTION OF IMAGE JUMP
    58.
    发明申请
    REDUCTION OF IMAGE JUMP 审中-公开
    减少图像跳动

    公开(公告)号：US20110285959A1

    公开(公告)日：2011-11-24

    申请号：US13114871

    申请日：2011-05-24

    申请人： Amitava Gupta ,  Ronald D. Blum

    发明人： Amitava Gupta ,  Ronald D. Blum

    IPC分类号： G02C7/06 ,  G02B3/10

    CPC分类号： G02C7/083

    摘要： Embodiments of the present invention disclosed herein are directed to apparatuses and systems for reducing the image jump from a dynamic lens component. The apparatuses and systems disclosed herein may be used in ophthalmic devices, such as eye glasses or contact lenses, as well as any other suitable application. Embodiments provide a first apparatus that comprises a dynamic power zone having a periphery. The first apparatus further comprises a static power zone in optical communication with at least a portion of the dynamic power zone. The static power zone has a negative optical power at a first portion of the periphery of the dynamic power zone.

    摘要翻译： 本文公开的本发明的实施例涉及用于减少来自动态透镜部件的图像跳跃的装置和系统。 本文公开的装置和系统可以用于眼科装置，例如眼镜或隐形眼镜，以及任何其它合适的应用。 实施例提供了包括具有周边的动态功率区的第一装置。 第一装置还包括与动态功率区的至少一部分进行光通信的静态功率区。 静态功率区在动态功率区的周边的第一部分具有负的光焦度。

    V-Shape Progressive Lens Design
    59.
    发明申请
    V-Shape Progressive Lens Design 审中-公开
    V型渐进透镜设计

    公开(公告)号：US20110194068A1

    公开(公告)日：2011-08-11

    申请号：US12964368

    申请日：2010-12-09

    申请人： Ronald D. Blum ,  Amitava Gupta ,  Dani Katzman

    发明人： Ronald D. Blum ,  Amitava Gupta ,  Dani Katzman

    IPC分类号： G02C7/06

    CPC分类号： G02C7/066 ,  G02C7/061

    摘要： Progressive lens designs are provided with various features relative to the corridor width, corridor length, and relative positioning of areas of maximum gradient power progression and maximum gradient, that differ from conventional progressive lens designs. Progressive lenses according to the invention may include a “V-shaped” cylinder map, a relatively low position of maximum gradient of power progression, and/or a large vertical separation between vertical position of maximal cylinder and vertical position of maximum gradient of power progression.

    摘要翻译： 逐行透镜设计具有相对于走廊宽度，走廊长度以及与常规渐进透镜设计不同的最大梯度功率进展和最大梯度区域的相对定位的各种特征。 根据本发明的渐进透镜可以包括“V形”圆柱体图，功率进展的最大梯度的相对低的位置和/或最大圆柱体的垂直位置和功率进展的最大梯度的垂直位置之间的大的垂直间隔 。