Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane
    11.
    发明授权
    Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane 失效
    1,1,1-三(4'-羟基苯基)乙烷的纯化

    公开(公告)号:US4992598A

    公开(公告)日:1991-02-12

    申请号:US478072

    申请日:1990-02-09

    CPC classification number: C07C37/70 C07C37/685 C07C37/82 C07C37/84

    Abstract: A process for the purificationof 1,1,1-tris(4'-hydroxyphenyl)ethane by washing a crude admixture containing both it and impurities with a saturated solution of 1,1,1-tris(4'-hydroxyphenyl)ethane in water and methanol; and isolating the washed crude admixture from the effluent and dissolving the washed crude admixture in methanol, and adding water and sodium borohydride to the dissolved, washed crude admixture to form a precipitate of 1,1,1-tris(4'-hydroxyphenyl)ethane, and filtering the precipitate to form a resultant purified 1,1,1-tris(4'-hydroxyphenyl)ethane and a filtrate. Another embodiment of the invention provides iteratively repeating the process by washing an additional crude admixture batch with the filtrate from a prior purification.

    Liquid crystal cell with a glass solder seal
    12.
    发明授权
    Liquid crystal cell with a glass solder seal 失效
    液晶单元带玻璃焊接密封

    公开(公告)号:US4158485A

    公开(公告)日:1979-06-19

    申请号:US885200

    申请日:1978-03-10

    CPC classification number: G02F1/1339

    Abstract: A liquid crystal cell having a chamber for receiving a layer of liquid crystal material which chamber is defined by a pair of plate members joined together adjacent their edges by a substantially continuous glass solder seal characterized by the glass solder seal being provided in the form of one or more glass fibers which are interposed between the plates and fused to form the glass solder seal. To facilitate positioning the one or more glass solder fibers, positioning means are provided on one surface of one of the plates and may be protruberances which are formed either by crystallizing glass solder, or by laser bombardment of the one surface. To facilitate the obtaining of the desired spacing between the plates, each of the glass fibers may have a core which may be either hard glass or a metal such as gold which core is surrounded by a lower melting glass so that during fusion of the fiber, the core remains substantially unmelted. In another embodiment, the glass fibers contain a material, such as being impregnated with CuO, which will absorb infrared radiation so that during the method of forming the cell, the step of heating to fuse the fibers includes subjecting the fibers to infrared radiation after preheating the assembled plates and fibers.

    Abstract translation: 一种具有用于接收液晶材料层的室的液晶单元,该室由一对板构件限定,所述一对板构件通过基本上连续的玻璃焊料密封接合在其边缘附近,其特征在于所述玻璃焊料密封件以一个形式提供 或更多的玻璃纤维,其插入在板之间并熔化以形成玻璃焊料密封。 为了便于定位一个或多个玻璃焊料纤维,定位装置设置在一个板的一个表面上,并且可以是通过使玻璃焊料结晶或通过一个表面的激光轰击形成的突起。 为了便于获得板之间的期望间隔,每个玻璃纤维可以具有芯,其可以是硬玻璃或金属,例如金,该芯由下熔融玻璃围绕,使得在纤维融合期间, 核心基本上未熔化。 在另一个实施方案中,玻璃纤维含有诸如被CuO浸渍的材料,其将吸收红外辐射,使得在形成电池的方法期间,加热熔化纤维的步骤包括在预热之后对纤维进行红外辐射 组装板和纤维。

    Method for optimizing a spectacle lens
    15.
    发明授权
    Method for optimizing a spectacle lens 有权
    眼镜镜片优化方法

    公开(公告)号:US08757800B2

    公开(公告)日:2014-06-24

    申请号:US12524315

    申请日:2008-01-25

    CPC classification number: G02C7/027 G02C7/02 G02C7/028 G02C7/061 G02C2202/22

    Abstract: The invention relates to a method, a computer program product and a system for designing or producing a spectacle lens for a spectacle wearer. Said method consists of the following steps: individual user data or application data of the spectacle wearer is obtained; the design concept for the spectacle lens having a plurality of evaluation points is determined; a main beam path through the plurality of evaluation points is determined; a local wavefront is specified for each of the main beams in the surroundings of the respective main beam; optical properties of the spectacle lens are determined on the evaluation points by determining an influence of the spectacle lens on the local wavefronts in the surroundings of the respective evaluation point; and the design concept is evaluated in accordance with the determined optical properties and the individual user data.

    Abstract translation: 本发明涉及一种用于眼镜佩戴者的眼镜镜片的设计或制造方法,计算机程序产品和系统。 所述方法包括以下步骤:获得眼镜佩戴者的个人用户数据或应用数据; 确定具有多个评价点的眼镜镜片的设计概念; 确定通过多个评估点的主光束路径; 为相应主光束的周围的每个主光束指定局部波前; 通过确定眼镜镜片对各评估点的周围的局部波前的影响,在评价点上确定眼镜片的光学特性; 并且根据确定的光学性质和各个用户数据来评估设计概念。

    Method for Checking and/or Determining User Data, A Computer Program Product, and an Apparatus
    20.
    发明申请
    Method for Checking and/or Determining User Data, A Computer Program Product, and an Apparatus 有权
    用于检查和/或确定用户数据的方法,计算机程序产品和装置

    公开(公告)号:US20100198817A1

    公开(公告)日:2010-08-05

    申请号:US12668711

    申请日:2008-07-14

    CPC classification number: G02C7/02 G02C2202/22

    Abstract: The present invention relates in summary to a method for checking and/or determining user data of a spectacle lens user comprising the steps of:—providing (S1) subjective data of a spectacle lens user, wherein the subjective data comprise at least subjective refraction data;—providing (S2) objective refraction data of the spectacle lens user;—comparing (S3) at least one subset of the subjective refraction data with at least one subset of the objective refraction data and determining a comparison result;—matching (S3) at least the subset of the subjective refraction data to the objective refraction data on the basis of the comparison result under the assumption that the comparison result fulfills at least one predetermined comparison condition, otherwise maintaining at least the subset of the subjective refraction data and/or—providing a message containing the comparison result, and to a further method, a computer program product and two devices for checking and/or determining user data.

    Abstract translation: 本发明总结涉及一种用于检查和/或确定眼镜镜片用户的用户数据的方法,包括以下步骤: - 提供(S1)眼镜镜片用户的主观数据,其中主观数据至少包括主观折射数据 提供(S2)眼镜镜片用户的客观折射数据; - 将主观折射数据的至少一个子集与目标折射数据的至少一个子集进行比较(S3)并确定比较结果; - 匹配(S3) 至少基于比较结果的主观折射数据的子主体折射数据到比较结果,假设比较结果满足至少一个预定的比较条件,否则至少保持主观折射数据的子集和/或 - 提供包含比较结果的消息,以及另一方法,计算机程序产品和用于检查和/或确定的两个设备 用户数据。

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