Method of making cylindrical fibrous filter structures
    2.
    发明授权
    Method of making cylindrical fibrous filter structures 失效
    制造圆柱形纤维过滤器结构的方法

    公开(公告)号:US4594202A

    公开(公告)日:1986-06-10

    申请号:US568824

    申请日:1984-01-06

    摘要: Cylindrical fibrous structures comprising a fibrous mass of nonwoven, synthetic, polymeric microfibers wherein the microfibers are substantially free of fiber-to-fiber bonding and secured to each other by mechanical entanglement of intertwining, the fiber structure having a substantially constant voids volume over at least a substantial portion of the structure and, preferably, a graded fiber diameter structure, both as measured in the radial direction. The structures are particularly useful as depth filters.The process for preparing such fibrous structures comprises the steps of:(a) extruding synthetic, polymeric material from a fiberizing die and attenuating the extruded polymeric material to form microfibers by the application of one or more gas streams directed toward a rotating mandrel and a forming roll in operative relationship with the mandrel;(b) cooling the synthetic, polymeric microfibers prior to their collection on the mandrel to a temperature below that at which they bond or fuse together, thereby substantially eliminating fiber-to-fiber bonding; and(c) collecting the cooled microfibers on the mandrel as a nonwoven, synthetic fibrous mass while applying a force on the exterior surface of the collected microfibers by the forming roll; wherein the process variables are controlled to form the cylindrical fiber structure with at least the major portion of the fibrous mass having a substantially constant voids volume.

    摘要翻译: 圆柱形纤维结构包括非织造纤维团,合成的聚合物微纤维,其中微纤维基本上不含纤维与纤维的结合,并通过相互缠结的机械缠结相互固定,所述纤维结构至少具有基本恒定的空隙体积 结构的大部分,并且优选地,在径向方向上测量的分级纤维直径结构。 这些结构特别适用于深度过滤器。 制备这种纤维结构的方法包括以下步骤:(a)从纤维化模头挤出合成的聚合物材料,并通过施加一个或多个指向旋转心轴的气流来减弱挤出的聚合物材料以形成微纤维,并形成 滚动与心轴的操作关系; (b)将合成的聚合物微纤维在其在心轴上收集之前冷却到低于它们粘合或熔合在一起的温度,从而基本上消除纤维与纤维的结合; 和(c)在芯轴上收集冷却的微纤维作为非织造的合成纤维块,同时通过成形辊在收集的微纤维的外表面上施加力; 其中控制所述过程变量以形成所述圆柱形纤维结构,其中所述纤维团的至少主要部分具有基本上恒定的空隙体积。

    Multifocal correction providing improved quality of vision

    公开(公告)号:US09770326B2

    公开(公告)日:2017-09-26

    申请号:US14514668

    申请日:2014-10-15

    摘要: This invention describes strategies and devices for improving the visual experience while expanding the depth of field of presbyopic and pseudophakic patients. The invention describes strategies and devices for providing improved image quality and improved visual quality of patients employing simultaneous vision bifocal, trifocal or multifocal corrections or monovision. The invention describes strategies and devices for reducing the visibility of the defocused part of the retinal image generated by simultaneous vision bifocal and multifocal ophthalmic corrections and monovision. The invention describes strategies and devices that employ control of spherical aberration or other similar asphericities to reduce the visibility of defocused ghost images. The invention describes strategies and devices that ensure that negative defocus is always coupled with negative spherical aberration (or similar asphericity), and that positive defocus is always coupled with positive SA (or similar asphericity) as a means to reduce the visibility of defocused ghost images.

    Optimizing optical aberrations in ophthalmic lenses
    5.
    发明授权
    Optimizing optical aberrations in ophthalmic lenses 有权
    优化眼科镜片的光学像差

    公开(公告)号:US08342683B2

    公开(公告)日:2013-01-01

    申请号:US12868766

    申请日:2010-08-26

    IPC分类号: G02C7/04

    CPC分类号: G02C7/04 G02C2202/22

    摘要: An ophthalmic lens includes spherical aberration in an amount that accounts for spherical aberration introduced into the lens during the manufacturing process and/or spherical aberration differences in the manufactured lens measured off of the eye and measured on the eye. The result is a lens-and-eye optical system is free or substantially free of spherical aberration, i.e., having only negligible spherical aberration. Because the optical system is free or substantially free of spherical aberration, there is no or only negligible coma induced by the normal misalignment of the lens optical axis and the eye's primary line of sight. The result is a lens-and-eye optical system that provides enhanced optical performance and visual quality. Also disclosed are methods of designing and manufacturing lenses with spherical aberration adjustments to account for manufacturing process changes and off-eye to on-eye differences.

    摘要翻译: 一种眼用透镜,包括考虑到在制造过程中引入到镜片中的球面像差的球面像差和/或在眼睛上测量的制造的镜片中的眼球上的差异,并在眼睛上测量。 结果是透镜和眼睛光学系统是自由的或基本上没有球面像差,即仅具有可忽略的球面像差。 因为光学系统是自由的或基本上没有球面像差,所以没有或只有可忽略的由镜片光轴和眼睛的主视线的正常未对准引起的昏迷。 其结果是提供增强的光学性能和视觉质量的镜头和眼睛光学系统。 还公开了设计和制造具有球面像差调整的透镜的方法,以考虑制造过程变化和眼睛与眼睛之间的差异。

    SIMULTANEOUS VISION LENSES, DESIGN STRATEGIES, APPARATUSES, METHODS, AND SYSTEMS
    6.
    发明申请
    SIMULTANEOUS VISION LENSES, DESIGN STRATEGIES, APPARATUSES, METHODS, AND SYSTEMS 有权
    同时的视觉镜头,设计策略,设备,方法和系统

    公开(公告)号:US20120176581A1

    公开(公告)日:2012-07-12

    申请号:US13496613

    申请日:2010-09-16

    CPC分类号: G02C7/02 G02C2202/22

    摘要: Certain exemplary embodiments include methods of determining ophthalmic prescriptions to ameliorate presbyopia. Certain exemplary embodiments provide an ophthalmic lens having spherical aberration of the same sign as the patient's eye and of a magnitude effective to substantially provide a desired net spherical aberration for an optical system including the patient's eye and the ophthalmic lens where the desired net spherical aberration provides a desired increase in near vision. Certain exemplary embodiments include contact lenses, intraocular lenses, corneal onlays, corneal inlays, or corneal surgeries providing spherical aberration of the same sign as the patient's eye and of a magnitude effective to substantially provide a desired net spherical aberration for an optical system including the patient's eye and the ophthalmic lens where the desired net spherical aberration provides a desired increase in near distance vision.

    摘要翻译: 某些示例性实施例包括确定眼科处方以改善老花眼的方法。 某些示例性实施例提供具有与患者眼睛相同符号的球面像差的眼科镜片,以及有效地为包括患者眼睛和眼镜片的光学系统基本上提供期望的净球面像差的量值,其中期望的净球面像差 期望增加近视力。 某些示例性实施例包括隐形眼镜,眼内透镜,角膜嵌体,角膜嵌体或角膜手术,其提供与患者眼睛相同符号的球面像差,并且具有有效大体上为包括患者的眼睛的光学系统提供期望的净球面像差的量值 眼睛和眼科镜片,其中期望的净球面像差提供了近距离视觉期望的增加。

    Multifocal correction providing improved quality of vision
    7.
    发明授权
    Multifocal correction providing improved quality of vision 有权
    多焦点矫正提高了视力质量

    公开(公告)号:US08894203B2

    公开(公告)日:2014-11-25

    申请号:US13405395

    申请日:2012-02-27

    摘要: This invention describes strategies and devices for improving the visual experience while expanding the depth of field of presbyopic and pseudophakic patients. The invention describes strategies and devices for providing improved image quality and improved visual quality of patients employing simultaneous vision bifocal, trifocal or multifocal corrections or monovision. The invention describes strategies and devices for reducing the visibility of the defocused part of the retinal image generated by simultaneous vision bifocal and multifocal ophthalmic corrections and monovision. The invention describes strategies and devices that employ control of spherical aberration or other similar asphericities to reduce the visibility of defocused ghost images. The invention describes strategies and devices that ensure that negative defocus is always coupled with negative spherical aberration (or similar asphericity), and that positive defocus is always coupled with positive SA (or similar asphericity) as a means to reduce the visibility of defocused ghostimages.

    摘要翻译: 本发明描述了用于改善视觉体验的策略和装置,同时扩大了远视眼和假眼患者的景深。 本发明描述了用于提供改善的图像质量并改善使用同时视觉双焦点,三焦点或多焦点修正或单视镜的患者的视觉质量的策略和装置。 本发明描述了用于降低由同时视力双焦点和多焦点眼科校正和单视觉产生的视网膜图像的散焦部分的可视性的策略和装置。 本发明描述了采用球面像差或其他类似非球面控制的策略和装置,以减少散焦的重影图像的可见度。 本发明描述了确保负散焦总是伴随负球面像差(或类似非球面性)的策略和装置,并且正的散焦总是与正的SA(或类似的非球面性)相结合,作为降低散焦的重影的可视性的手段。

    METHOD AND APPARATUS FOR GENERATING RF WAVEFORMS HAVING AGGREGATE ENERGY WITH DESIRED SPECTRAL CHARACTERISTICS
    8.
    发明申请
    METHOD AND APPARATUS FOR GENERATING RF WAVEFORMS HAVING AGGREGATE ENERGY WITH DESIRED SPECTRAL CHARACTERISTICS 失效
    用于产生具有所需光谱特性的聚集能量的射频波形的方法和装置

    公开(公告)号:US20100277208A1

    公开(公告)日:2010-11-04

    申请号:US12235247

    申请日:2008-09-22

    IPC分类号: H03B28/00

    摘要: The present invention relates to a method and system that emulates a desired waveform by producing a time profile of the desired waveform, which is characterized by a plurality of sample values, and generating a plurality of RF waveforms, each RF waveform of the plurality of RF waveforms having a polarity and scaled energy based on a corresponding one of the plurality of sample values, to produce an aggregate RF energy having spectral characteristics that approximate the spectral characteristics of the desired waveform.

    摘要翻译: 本发明涉及一种通过产生期望波形的时间分布来模拟期望波形的方法和系统,该期望波形的特征在于多个采样值,并且产生多个RF波形,多个RF的每个RF波形 具有基于所述多个样本值中相应的一个样本值的极性和缩放能量的波形,以产生具有近似所需波形的光谱特性的光谱特性的聚合射频能量。

    Vascular entoptoscope
    9.
    发明授权
    Vascular entoptoscope 失效
    血管内皮细胞凋亡

    公开(公告)号:US5016643A

    公开(公告)日:1991-05-21

    申请号:US518065

    申请日:1990-05-02

    IPC分类号: A61B3/12

    CPC分类号: A61B3/12 A61B3/1241

    摘要: Described herein are an apparatus and range of techniques used to study the retinal vasculature near the fovea, a description of the need and rationale for noninvasive in vivo monitoring of the retinal vasculature, a presentation of theoretical and practical considerations which demonstrate that entoptic visualization of the smallest capillaries near the fovea is optimized by a small short wavelength source (1 mm or less) rotating at 3.5 Hz in a circular path (radius 2 mm) imaged in the plane of the eye's entrance pupil and a discussion of the feasibility of using these techniques as a reseResearch relating to the development of the present invention was supported in part by grants from the United States Department of Health and Human Services (NIH EY08005 and EY07638). The United States government may have corresponding rights to the license and use of any resulting patent.

    摘要翻译: 本文描述了用于研究中央凹附近的视网膜脉管系统的技术的设备和范围,对视网膜脉管系统的非侵入性体内监测的需要和理由的描述,理论和实践考虑的呈现,其表明 在中央凹附近的最小毛细血管通过在眼睛入口瞳孔平面中成像的圆形路径(半径2mm)以3.5Hz旋转的小的短波长源(1mm或更小)进行优化,并讨论使用这些 技术作为研究和临床工具。

    MULTIFOCAL CORRECTION PROVIDING IMPROVED QUALITY OF VISION
    10.
    发明申请
    MULTIFOCAL CORRECTION PROVIDING IMPROVED QUALITY OF VISION 有权
    提供改进的视觉质量的多功能校正

    公开(公告)号:US20150029460A1

    公开(公告)日:2015-01-29

    申请号:US14514668

    申请日:2014-10-15

    摘要: This invention describes strategies and devices for improving the visual experience while expanding the depth of field of presbyopic and pseudophakic patients. The invention describes strategies and devices for providing improved image quality and improved visual quality of patients employing simultaneous vision bifocal, trifocal or multifocal corrections or monovision. The invention describes strategies and devices for reducing the visibility of the defocused part of the retinal image generated by simultaneous vision bifocal and multifocal ophthalmic corrections and monovision. The invention describes strategies and devices that employ control of spherical aberration or other similar asphericities to reduce the visibility of defocused ghost images. The invention describes strategies and devices that ensure that negative defocus is always coupled with negative spherical aberration (or similar asphericity), and that positive defocus is always coupled with positive SA (or similar asphericity) as a means to reduce the visibility of defocused ghostimages.

    摘要翻译: 本发明描述了用于改善视觉体验的策略和装置,同时扩大了远视眼和假眼患者的景深。 本发明描述了用于提供改善的图像质量并改善使用同时视觉双焦点,三焦点或多焦点修正或单视镜的患者的视觉质量的策略和装置。 本发明描述了用于降低由同时视力双焦点和多焦点眼科校正和单视觉产生的视网膜图像的散焦部分的可视性的策略和装置。 本发明描述了采用球面像差或其他类似非球面控制的策略和装置,以减少散焦的重影图像的可见度。 本发明描述了确保负散焦总是伴随负球面像差(或类似非球面性)的策略和装置,并且正的散焦总是与正的SA(或类似的非球面性)相结合,作为降低散焦的重影的可视性的手段。