Nylon 6 or 66 based compositions and films formed therefrom having
reduced curl
    1.
    发明授权
    Nylon 6 or 66 based compositions and films formed therefrom having reduced curl 失效
    尼龙6或66基组合物和由其形成的膜具有减小的卷曲

    公开(公告)号:US6040392A

    公开(公告)日:2000-03-21

    申请号:US38201

    申请日:1998-03-10

    摘要: Super-miscible blends of nylon copolymers are provided as well as multilayered film structures made therefrom. A nylon composition is a substantially uniform blend of at least one semi-crystalline copolymer I and at least one semi-crystalline copolymer II, wherein the proportion by weight of each of copolymer I and copolymer II. The nylon compositions are extremely uniform, and have only a single melting point rather than individual melting points of the component nylon copolymer parts. Coextruded films of a layer of this nylon composition with an olefin containing polymer are suitable for use as barrier films, such as aroma barrier films, which have reduced curl.

    摘要翻译: 提供了尼龙共聚物的超混溶混合物以及由其制成的多层膜结构。 尼龙组合物是至少一种半结晶共聚物I和至少一种半结晶共聚物II的基本均匀的共混物,其中共聚物I和共聚物II各自的重量比。 尼龙组合物非常均匀,并且仅具有单一熔点而不是组分尼龙共聚物部分的单个熔点。 这种尼龙组合物与含烯烃聚合物的层的共挤出膜适合用作具有降低的卷曲的阻隔膜,例如芳香阻隔膜。

    Plastic/metal composite stress plate and method of using same for securing a thermoplastic roof membrane to roof deck
    2.
    发明授权
    Plastic/metal composite stress plate and method of using same for securing a thermoplastic roof membrane to roof deck 有权
    塑料/金属复合应力板及其使用方法将热塑性屋顶膜固定在屋顶板上

    公开(公告)号:US07413392B2

    公开(公告)日:2008-08-19

    申请号:US11116701

    申请日:2005-04-28

    IPC分类号: F16B43/00 E04D5/14

    CPC分类号: E04D5/145 E04D5/142 F16B35/06

    摘要: A two-piece fastener assembly for securing thermoplastic roof membranes to an underlying roof deck having: a stress plate and a fastener. The stress plate consists of a pre-fabricated metal layer and a thermoplastic layer which are integral with each other. The stress plate has top having three flat surfaces and two circumferential portions, forming ridges or protuberances connecting the flat surfaces. In a method aspect the steps of securing thermoplastic roof membranes to an underlying roof deck, includes: placing a first thermoplastic roof membrane on the roof deck; placing a line of stress plates on the marginal portion of the first thermoplastic roof membrane and securing the stress plates along with the first thermoplastic roof membrane to the roof deck by use of the fastener; placing a second thermoplastic roof membrane to overlap the line of stress plates and the marginal portion of the first thermoplastic roof membrane; and applying heat and pressure to the line of stress plates and the overlapped portion of the first and second thermoplastic roof membranes to fuse them together and provide a waterproof covering over the roof deck.

    摘要翻译: 一种用于将热塑性屋顶膜固定到下面的屋顶板的两件式紧固件组件,其具有:应力板和紧固件。 应力板由预制金属层和彼此成一体的热塑性层组成。 应力板具有顶部,其具有三个平坦表面和两个周向部分,形成连接平坦表面的脊或突起。 在方法方面,将热塑性屋顶膜固定到下层屋顶板的步骤包括:将第一热塑性屋顶膜放置在屋顶板上; 在第一热塑性屋顶膜的边缘部分放置一线应力板,并通过使用紧固件将应力板与第一热塑性屋顶膜一起固定到屋顶板; 放置第二热塑性屋顶膜以覆盖应力板的线和第一热塑性屋顶膜的边缘部分; 以及将热和压力施加到应力板线和第一和第二热塑性屋顶膜的重叠部分以将它们熔合在一起,并在屋顶板上提供防水覆盖物。

    Dual beam spectrophotometer modular sample system
    3.
    发明授权
    Dual beam spectrophotometer modular sample system 失效
    双光束分光光度计模块化样品系统

    公开(公告)号:US06870615B2

    公开(公告)日:2005-03-22

    申请号:US10390817

    申请日:2003-03-17

    IPC分类号: G01J3/02 G01J3/08 G01J3/42

    摘要: A modular dual-beam source, sample compartment and beam-combining system are provided when used with a monochromator and detector to form a spectrophotometer consisting of: (a) a source module where two ellipsoidal mirrors each produce an image of the light source, and (b) a reflecting sample-compartment module, wherein each side has two plane-mirrors, of the four plane mirrors, three are reference and one is the sample, or (c) a transmission sample-compartment module, wherein each side has two plane-mirrors, and a sample is placed between one pair of plane-mirrors, and (d) a beam-combining module wherein the source images are imaged by a second pair of ellipsoidal mirrors on a reflective chopper that combines the images at a single location that is imaged, external to the module, by another mirror, each module being kinematically located with respect to each other so the system remains optically aligned as modules are interchanged.

    摘要翻译: 当与单色仪和检测器一起使用时,提供模块化双光束源,样品室和光束组合系统,以形成分光光度计,其由以下组成:(a)源模块,其中两个椭圆面镜各自产生光源的图像,以及 (b)反射样品室模块,其中每个侧面具有两个平面镜,四个平面镜中的三个是参考的,一个是样品,或者(c)透射样品室模块,其中每个侧面具有两个 平面镜,并且将样品放置在一对平面镜之间,和(d)光束组合模块,其中源图像由反射斩波器上的第二对椭球镜成像,其将单个图像组合在一起 通过另一个镜子在模块外部成像的位置,每个模块相对于彼此被运动地定位,使得当模块互换时,系统保持光学对准。

    Device and method for mapping objects
    5.
    发明授权
    Device and method for mapping objects 失效
    用于映射对象的设备和方法

    公开(公告)号:US5475452A

    公开(公告)日:1995-12-12

    申请号:US200241

    申请日:1994-02-24

    CPC分类号: A61B3/107 G01B11/255

    摘要: This invention provides a method and apparatus for mapping the surface of an object, in particular, a transparent object such as anterior and posterior surfaces of a patient's cornea, in a clinically useful time using a single optical system. In a preferred embodiment, a pattern generator projects a pattern of light and dark areas onto a patient's cornea, and a light detector receives patterns reflected from the anterior and posterior surfaces of the cornea. A mapping means generates a three-dimensional map of the anterior and posterior corneal surfaces from information regarding the projected and detected light patterns. The invention can be used to map other transparent objects such as a contact lens or an intraocular device, e.g., an intrastromal ring. The invention can also be used to map the surface of an opaque object.

    摘要翻译: 本发明提供了一种用于使用单个光学系统在临床有用的时间内对象的表面,特别是诸如患者角膜的前表面和后表面的透明物体进行映射的方法和装置。 在优选实施例中,图案生成器将光和暗区域的图案投射到患者的角膜上,并且光检测器接收从角膜的前表面和后表面反射的图案。 映射装置从关于投影和检测到的光图案的信息生成前角膜和后角膜表面的三维图。 本发明可用于映射诸如隐形眼镜或眼内装置之类的其它透明物体,例如内旋环。 本发明还可用于映射不透明物体的表面。

    Device and Method for Subaperture Stray Light Detection and Diagnosis
    6.
    发明申请
    Device and Method for Subaperture Stray Light Detection and Diagnosis 有权
    用于子孔径杂散光检测和诊断的装置和方法

    公开(公告)号:US20130258323A1

    公开(公告)日:2013-10-03

    申请号:US13726154

    申请日:2012-12-23

    IPC分类号: G01B11/26

    摘要: A device and method for subaperture stray light detection and diagnosis in an optical system. A test light beam is generated with a width whose cross sectional area is less than the cross sectional area of a system aperture. Stray light is detected at a system detection surface. Based on the stray light and the location and direction angles of the light beam, potential paths that light may have taken to arrive at the detection surface are determined so as to identify physical features of the optical system that may have produced the stray light. A testing device comprises a test light beam source, preferably including a beam width magnifier, whereby the cross sectional area of the test light beam is made less than the cross sectional area of the system aperture. A relative lateral positioning stage and an angular beam directing stage launch the test light beam into the aperture at a selected position and selected directional angles. A detector and a data processing system produce a data set relating the stray light to the location and directional angles of the test light beam. A light trap and complementary test light beam delivery system are also provided.

    摘要翻译: 一种用于光学系统中亚光谱杂散光检测和诊断的装置和方法。 产生具有横截面积小于系统孔径横截面面积的宽度的测试光束。 在系统检测表面检测到杂散光。 基于杂散光和光束的位置和方向角度,确定光可能到达检测表面的电势路径,以便识别可能产生杂散光的光学系统的物理特征。 测试装置包括测试光束源,优选地包括光束宽度放大镜,由此使测试光束的横截面积小于系统孔径的横截面面积。 相对的侧向定位台和角度光束定向台将测试光束在所选择的位置和选定的方向角度发射到孔中。 检测器和数据处理系统产生将杂散光与测试光束的位置和方向角相关联的数据集。 还提供了光阱和补充测试光束传送系统。

    Method and apparatus for measuring corneal incisions
    10.
    发明授权
    Method and apparatus for measuring corneal incisions 失效
    用于测量角膜切口的方法和装置

    公开(公告)号:US6125294A

    公开(公告)日:2000-09-26

    申请号:US907112

    申请日:1997-08-06

    摘要: A method and apparatus for performing a surgical procedure on a patient is described. An incision is made into tissue of the patient to create a tissue pocket. The tissue has an anterior surface. Preferably, the tissue is corneal tissue of an eye. A reflective element is inserted into the pocket. An energy source generates a radiant energy signal, which is directed toward the reflective element. Reflected energy is received from the reflective element. A detector determines the depth of the reflective element below the anterior surface based upon the energy reflected by the reflective element. The speed of transmission of the radiant energy in the reflective element is different (preferably slower) than the speed of transmission of the radiant energy in the tissue. The reflective element may be in the form of a tool on which is disposed a biocompatible polymer layer, the layer comprising trapped air spaces, or a tool having an open space for containing trapped air. The radiant energy may take the form of ultrasound generated by an ultrasonic probe, or light generated by a confocal microscope. The confocal microscope may employ longitudinal chromatic aberration to measure the depth of the reflective element. When employing a confocal microscope, the depth of the reflective element is a function of the reflected energy from the anterior surface and the reflected energy from the reflective element.

    摘要翻译: 描述了一种用于对患者进行外科手术的方法和装置。 将切口制成患者的组织以产生组织袋。 组织具有前表面。 优选地,组织是眼睛的角膜组织。 将反射元件插入口袋中。 能量源产生朝向反射元件的辐射能信号。 从反射元件接收反射能量。 检测器基于由反射元件反射的能量确定反射元件在前表面下方的深度。 反射元件中的辐射能的传输速度与组织中的辐射能的传递速度不同(优选地较慢)。 反射元件可以是工具的形式,其上设置有生物相容性聚合物层,该层包括被捕获的空气空间,或具有用于容纳被捕获的空气的开放空间的工具。 辐射能可以采用由超声波探头产生的超声或由共聚焦显微镜产生的光的形式。 共焦显微镜可以采用纵向色差来测量反射元件的深度。 当使用共焦显微镜时,反射元件的深度是来自前表面的反射能量和来自反射元件的反射能量的函数。