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    Toric surfacecasting
    111.
    发明授权
    Toric surfacecasting 失效
    复曲面广播

    公开(公告)号：US5793465A

    公开(公告)日：1998-08-11

    申请号：US728249

    申请日：1996-10-08

    申请人： Amitava Gupta ,  Ronald D. Blum

    发明人： Amitava Gupta ,  Ronald D. Blum

    IPC分类号： B29D11/00 ,  G02C7/06 ,  G02C7/02 ,  G02C7/04

    CPC分类号： G02C7/06

    摘要： An optical preform has a predetermined spherical curve on a concave surface of the optical preform, a predetermined spherical curve on a convex surface of the optical preform and a near add power. A thin resin is applied to the concave surface of the optical preform and molded to form a toric layer by a mold having a toric, convex mold surface. The resin layer is then cured and the mold removed to form a finished ophthalmic lens.

    摘要翻译： 光学预型件在光学预型件的凹面上具有预定的球形曲线，在光学预型件的凸面上具有预定的球形曲线，并具有接近的附加功率。 将薄树脂施加到光学预成型件的凹面上，并通过具有复曲面凸模模具表面的模具成型以形成复曲面层。 然后将树脂层固化并除去模具以形成成品的眼科镜片。

    Method of manufacturing toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses
    113.
    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：US5598234A

    公开(公告)日：1997-01-28

    申请号：US216381

    申请日：1994-03-23

    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： A method for making a finished aspheric single vision, spherical or aspheric bifocal, multifocal or progressive addition contact lens includes the step of fitting a patient requiring a near correction with a single vision spherical or aspheric contact lens for optimal distance vision and comfortable fit. If desired, the patient is then over-refracted to determine the required near correction to be embodied in the contact lens. A portion of the optic corresponding to the center location of the pupil is marked on the convex side of the optic to form an optical preform. In some instances, the lens may not stabilize on the cornea to a suitable degree. Thus, it is often desirable to stabilize the contact lens, either prior to placing the lens on the patient or after rotation is observed on the cornea of the patent. Observation of rotation on the patient's cornea is enhanced by means of the mark that is used to designate the center of the patient's pupil. The optical preform is removed from the eye of the patient and the concave side of the optical preform is marked at a position corresponding to the mark on the convex side that denotes the center of the pupil. The mark disposed on the convex side of the optical preform is removed. A specified volume of polymerizable resin is placed in a mold embodying the required correction, which includes an add power zone so that the resin fills the intervening space between the mold and the optical preform. The add power zone is aligned on the optical preform to a predetermined position with respect to the mark on the optical preform designating the center of the pupil. The resin is then polymerized the optical preform is demolded to obtain the finished contact lens having the required correction.

    摘要翻译： 用于制造成品非球面单视，球形或非球面双焦点，多焦点或渐进式附加隐形眼镜的方法包括使用单视角球形或非球面隐形眼镜拟合需要近距矫正的患者以实现最佳距离视觉和舒适贴合的步骤。 如果需要，则患者被过度折射以确定要在隐形眼镜中体现的所需的近修正。 对应于瞳孔的中心位置的光学部件的一部分被标记在光学元件的凸面上以形成光学预成型件。 在某些情况下，透镜可能不能在角膜上稳定到适当的程度。 因此，通常希望在将镜片放置在患者身上之前或在专利角膜上观察旋转之后稳定隐形眼镜。 通过用于指定患者瞳孔中心的标记来增强观察患者角膜上的旋转。 光学预成型件从患者的眼睛中取出，光学预型件的凹面被标记在与表示瞳孔中心的凸面上的标记相对应的位置处。 去除设置在光学预制件的凸面上的标记。 将指定体积的可聚合树脂放置在体现所需校正的模具中，该模具包括添加功率区，使得树脂填充模具和光学预型件之间的中间空间。 附加功率区域在光学预型件上对准相对于指定瞳孔中心的光学预制件上的标记的预定位置。 然后将树脂聚合，将光学预型体脱模以获得具有所需校正的成品隐形眼镜。

    Polymerizable resin for forming clear, hard plastics
    114.
    发明授权
    Polymerizable resin for forming clear, hard plastics 失效
    用于形成透明，硬塑料的可聚合树脂

    公开(公告)号：US5470892A

    公开(公告)日：1995-11-28

    申请号：US877105

    申请日：1992-05-01

    申请人： Amitava Gupta ,  Ronald D. Blum

    发明人： Amitava Gupta ,  Ronald D. Blum

    IPC分类号： C08F18/24 ,  G02B1/04 ,  B29D11/00 ,  C08F26/02

    CPC分类号： B29D11/00961 ,  C08F18/24 ,  G02B1/041

    摘要： A photopolymerizable resin is formed from between about 50% to 90% by weight of a polymerizable base component, between about 1% and 20% by weight of a cross-linker, between about 0.5% and 6% by weight of a photoinitiator, and between about 0.5% and 20% by weight of a viscosity control agent. Preferably the resin has a viscosity above 25 and below 130 centistokes at 68.degree. F. In a preferred embodiment, the resin includes between about 0.5% and 3.0% by weight of fumed silica or fine mesh silica as a viscosity control agent, and is cured under the combined influence of heat and actinic radiation to form a clear, hard, plastic optic having a refractive index of greater than or equal to 1.50 and a scratch resistance greater than or equal to 1.0 in a Bayer abrader and hazemeter. A method and apparatus for forming improved ophthalmic lenses is also included.

    摘要翻译： 可光聚合树脂由约50重量％至90重量％的可聚合基础组分，约1重量％至20重量％的交联剂，约0.5重量％至6重量％的光引发剂之间形成，以及 约0.5重量％至20重量％的粘度控制剂。 优选地，树脂在68°F时具有高于25且低于130厘沲的粘度。在优选实施方案中，树脂包含约0.5重量％至3.0重量％的作为粘度控制剂的热解法二氧化硅或细网二氧化硅，并且被固化 在热和光化辐射的组合影响下，在拜耳研磨剂和雾度计中形成折射率大于或等于1.50且耐擦伤性大于或等于1.0的透明，硬的塑料光学元件。 还包括用于形成改进的眼科镜片的方法和装置。

    Method of producing durable bonds between an optical preform and an optical resin layer cast on the preform surface
    115.
    发明授权
    Method of producing durable bonds between an optical preform and an optical resin layer cast on the preform surface 失效
    在光学预成型件和在预成型件表面上铸造的光学树脂层之间生成耐用结合的方法

    公开(公告)号：US5316702A

    公开(公告)日：1994-05-31

    申请号：US915209

    申请日：1992-07-20

    申请人： Ronald D. Blum ,  Amitava Gupta ,  Steve Bennington

    发明人： Ronald D. Blum ,  Amitava Gupta ,  Steve Bennington

    IPC分类号： B29C33/42 ,  B29C39/00 ,  B29C70/68 ,  B29C70/78 ,  B29D11/00

    CPC分类号： B29C33/424 ,  B29C70/683 ,  B29C70/78 ,  B29D11/00009 ,  B29C39/00

    摘要： A method of casting an ophthalmic optic is described. A mold, an optical preform and a polymerizable resin are provided. The resin is disposed between the mold and the optical preform. The preform and the resin interact to produce a contact angle between the resin and preform of from about 20 degrees to about 45 degrees; or the mold and the resin interact to produce a contact angle between the mold and the resin of from about 45 to about 75 degrees; or both. The polymerizable resin is then cured.Another method of casting an ophthalmic optic is also described. A mold, an optical preform and a polymerizable resin are provided. The optical preform is supplied with a surface having a regular pattern of grooves that comprise a grid formed by intersecting curves or lines imprinted on the surface of the optical preform. The polymerizable resin is provided between the optical preform and the mold such that the polymerizable resin contacts the regular pattern of grooves on the optical preform. The polymerizable resin is then cured.

    摘要翻译： 描述了一种铸造眼科镜的方法。 提供了一种模具，光学预型件和可聚合树脂。 树脂设置在模具和光学预型件之间。 预成型件和树脂相互作用以在树脂和预制件之间产生约20度至约45度的接触角; 或者模具和树脂相互作用以在模具和树脂之间产生约45至约75度的接触角; 或两者。 然后将可聚合树脂固化。 还描述了另一种铸造眼科镜的方法。 提供了一种模具，光学预型件和可聚合树脂。 光学预型件被提供有具有规则图案的凹槽的表面，该表面包括通过与光学预型件的表面上印刻的曲线或线相交形成的格栅。 可聚合树脂设置在光学预型件和模具之间，使得可聚合树脂接触光学预型件上的规则图案的凹槽。 然后将可聚合树脂固化。

    Internal stabilization of polycarbonate resins
    116.
    发明授权
    Internal stabilization of polycarbonate resins 失效
    聚碳酸酯树脂的内部稳定性

    公开(公告)号：US4945001A

    公开(公告)日：1990-07-31

    申请号：US200246

    申请日：1988-05-31

    申请人： Amitava Gupta ,  Ranty H. Liang ,  Andre H. Yavrouian

    发明人： Amitava Gupta ,  Ranty H. Liang ,  Andre H. Yavrouian

    IPC分类号： C08G64/40 ,  C08J3/28

    CPC分类号： C08J3/28 ,  C08G64/40 ,  C08J2369/00 ,  Y10T428/31507

    摘要： A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first frequency below 300 nm generates 2 to 8 mol percent of phenyl salicylate groups which are rearranged to dihydroxybenzophenone groups by irradiating the resin under oxygen excluding conditions at a second frequency from 300 to 320 nm.

    摘要翻译： 通过内部产生与聚合物链结合的稳定剂形成新的聚碳酸酯共聚物树脂。 在低于300nm的第一频率下照射树脂的固体片或脱氧的溶液，通过在不同于第二频率的氧条件下将氧化苯乙酸酯基团重新排列成二羟基二苯甲酮基团，得到2-8mol％的苯基苯基苯基， 320nm。

    N-Butyl acrylate polymer composition for solar cell encapsulation and method
    117.
    发明授权
    N-Butyl acrylate polymer composition for solar cell encapsulation and method 失效
    用于太阳能电池封装的丙烯酸正丁酯聚合物组合物和方法

    公开(公告)号：US4374955A

    公开(公告)日：1983-02-22

    申请号：US158575

    申请日：1980-06-11

    申请人： Amitava Gupta ,  John D. Ingham ,  Andre H. Yavrouian

    发明人： Amitava Gupta ,  John D. Ingham ,  Andre H. Yavrouian

    IPC分类号： C08F265/06 ,  C09J4/06 ,  H01L31/048 ,  C08L51/00 ,  C08L33/08

    CPC分类号： H01L31/048 ,  C08F265/06 ,  C09J4/06 ,  Y02E10/50

    摘要： A polymer syrup for encapsulating solar cell assemblies. The syrup includes uncrosslinked poly(n-butyl)acrylate dissolved in n-butyl acrylate monomer. Preparation of the poly(n-butyl)acrylate and preparation of the polymer syrup is disclosed.Methods for applying the polymer syrup to solar cell assemblies as an encapsulating pottant are described. Also included is a method for solar cell construction utilizing the polymer syrup as a dual purpose adhesive and encapsulating material.

    摘要翻译： 一种用于封装太阳能电池组件的聚合物糖浆。 糖浆包括溶解在丙烯酸正丁酯单体中的未交联的聚（正丁基）丙烯酸酯。 公开了聚（正丁基）丙烯酸酯的制备和聚合物浆料的制备。 描述了将聚合物浆料施加到作为密封剂的太阳能电池组件上的方法。 还包括利用聚合物浆料作为双重目的的粘合剂和封装材料的太阳能电池结构的方法。

    Double-beam optical method and apparatus for measuring thermal diffusivity and other molecular dynamic processes in utilizing the transient thermal lens effect
    119.
    发明授权
    Double-beam optical method and apparatus for measuring thermal diffusivity and other molecular dynamic processes in utilizing the transient thermal lens effect 失效
    双光束光学方法和装置，用于测量热扩散率和其他分子动力学过程中利用瞬态热透镜效应

    公开(公告)号：US4243327A

    公开(公告)日：1981-01-06

    申请号：US8211

    申请日：1979-01-31

    申请人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Jovan Moacanin ,  Amitava Gupta ,  Su-don Hong

    发明人： Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch ,  Jovan Moacanin ,  Amitava Gupta ,  Su-don Hong

    IPC分类号： G01N21/17 ,  G01N25/18 ,  G01N21/01

    CPC分类号： G01N21/171 ,  G01N25/18

    摘要： A method and apparatus for measuring thermal diffusivity and molecular relaxation processes in a sample material utilizing two light beams, one being a pulsed laser light beam for forming a thermal lens in the sample material, and the other being a relatively low power probe light beam for measuring changes in the refractive index of the sample material during formation and dissipation of the thermal lens. More specifically, a sample material is irradiated by relatively high power, short pulses from a dye laser. Energy from the pulses is absorbed by the sample material, thereby forming a thermal lens in the area of absorption. The pulse repetition rate is chosen so that the thermal lens is substantially dissipated by the time the next pulse reaches the sample material. A probe light beam, which in a specific embodiment is a relatively low power, continuous wave (cw) laser beam, irradiates the thermal lens formed in the sample material. The intensity characteristics of the probe light beam subsequent to irradiation of the thermal lens is related to changes in the refractive index of the sample material as the thermal lens is formed and dissipated. A plot of the changes in refractive index as a function of time during formation of the thermal lens as reflected by changes in intensity of the probe beam, provides a curve related to molecular relaxation characteristics of the material, and a plot during dissipation of the thermal lens provides a curve related to the thermal diffusivity of the sample material.

    摘要翻译： 一种利用两个光束测量样品材料中的热扩散率和分子弛豫过程的方法和装置，一种是用于在样品材料中形成热透镜的脉冲激光束，另一种是相对低功率的探测光束， 测量在热透镜的形成和耗散期间样品材料的折射率的变化。 更具体地，通过来自染料激光器的相对高功率的短脉冲照射样品材料。 来自脉冲的能量被样品材料吸收，从而在吸收区域形成热透镜。 选择脉冲重复率，使得热透镜在下一个脉冲到达样品材料的时间基本消散。 探针光束在特定实施例中是相对低功率的连续波（cw）激光束照射形成在样品材料中的热透镜。 在透镜的照射之后的探测光束的强度特性与形成和散发热透镜时的样品材料的折射率的变化有关。 作为由透镜的强度变化所反射的热透镜形成时的折射率随时间的变化的曲线图，提供了与材料的分子弛豫特性相关的曲线，以及热耗散期间的曲线 透镜提供与样品材料的热扩散率相关的曲线。