Multifocal contact lenses
    32.
    发明授权
    Multifocal contact lenses 有权
    多焦点隐形眼镜

    公开(公告)号:US07322695B2

    公开(公告)日:2008-01-29

    申请号:US11389798

    申请日:2006-03-27

    IPC分类号: G02C7/04

    CPC分类号: G02C7/044

    摘要: The invention provides methods for correcting presbyopia and lenses for such correction in which production of a full range of multifocal lenses is accomplished using three rotationally symmetric, aspheric back surfaces, the design of which base curves is a function of refractive power.

    摘要翻译: 本发明提供了用于校正老花眼和用于这种校正的透镜的方法,其中使用三个旋转对称的非球面后表面实现全范围的多焦点透镜的生产,其基本曲线的设计是屈光力的函数。

    High spectral purity microwave oscillator using air-dielectric cavity
    35.
    发明申请
    High spectral purity microwave oscillator using air-dielectric cavity 失效
    使用空气介电腔的高光谱纯度微波振荡器

    公开(公告)号:US20050007204A1

    公开(公告)日:2005-01-13

    申请号:US10885118

    申请日:2004-07-07

    摘要: A high spectral purity microwave oscillator is provided. The Oscillator uses an air-dielectric cavity and employs the known carrier-suppression technique. In one embodiment, the oscillator employs a high-Q cavity to self-sustain an oscillating signal formed by feeding back into its input a power-amplified output signal of the cavity in which residual phase noise in the amplifier stages is suppressed. A bandpass filter selects the cavity mode. FIG. 1 illustrates this embodiment. Another embodiment suppresses the noise of a voltage-controlled oscillator whose frequency and power-amplified output interrogates the cavity mode. FIG. 2 illustrates this embodiment.

    摘要翻译: 提供高光谱纯度的微波振荡器。 振荡器使用空气介电腔并采用已知的载流子抑制技术。 在一个实施例中,振荡器采用高Q空腔来自我维持通过向其输入反馈形成的放大器级中的残余相位噪声被抑制的空腔的功率放大输出信号而形成的振荡信号。 带通滤波器选择腔模式。 图。 图1示出了该实施例。 另一个实施例抑制其频率和功率放大输出询问空腔模式的压控振荡器的噪声。 图。 图2示出了该实施例。

    Method of manufacturing a progressive optic
    36.
    发明授权
    Method of manufacturing a progressive optic 失效
    逐行光学元件的制造方法

    公开(公告)号:US5907386A

    公开(公告)日:1999-05-25

    申请号:US954052

    申请日:1997-10-17

    摘要: A progressive optic has an optical preform wherein the radius of curvature of the surface is altered by forming discrete spherical portions across the surface. A thin intermediate layer, having a different refractive index from the optical preform, is then cast over the formed optical preform surface. The optical preform having the thin intermediate layer is then cast with a resin superstrate layer which restores the curve of the optic. Each spherical section, defined by the spherical portions and corresponding portions of the outer surface of the superstrate layer, alters the spherical power of the adjacent spherical section by about 0.03 D to 0.05 D.

    摘要翻译: 渐进光学元件具有光学预成型件,其中通过在表面上形成离散的球形部分来改变表面的曲率半径。 然后将具有与光学预型件不同的折射率的薄的中间层浇铸在所形成的光学预制件表面上。 然后将具有薄的中间层的光学预型件用树脂覆盖层浇铸,其恢复光学元件的曲线。 由球形部分和覆盖层的外表面的相应部分限定的每个球形部分将相邻球形部分的球面力量改变约0.03D至0.05D。

    Method of manufacturing contact lenses
    37.
    发明授权
    Method of manufacturing contact lenses 失效
    制造隐形眼镜的方法

    公开(公告)号:US5872613A

    公开(公告)日:1999-02-16

    申请号:US664078

    申请日:1996-06-13

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

    摘要: A method for providing a contact lens for a patient. According to this method, an optical preform is selected, and a resting position of the optical preform on the patient's eye is determined. An optical feature is also located on a patient's eye. Then, a reference position is located on the surface of the optical preform coincident with the optical feature on the patients eye, when the optical preform is in the resting position. Finally, the optical modification is provided on the optical preform at a location based on the reference position on the optical preform, either by machining the preform itself or by machining a mold that is subsequently used to form the lens.

    摘要翻译: 一种用于为患者提供隐形眼镜的方法。 根据该方法,选择光学预型件,并且确定光学预型件在患者眼睛上的静止位置。 光学特征也位于病人的眼睛上。 然后,当光学预型件处于静止位置时,参考位置位于与光学预型件重叠的病人眼睛上的光学预制件的表面上。 最后,光学预制件在基于光学预型件上的基准位置的位置处,通过机加工预制件本身或通过机加工随后用于形成透镜的模具而在光学预制件上提供。

    Prismatic intraocular lenses and related methods of in situ alteration
of their optical characteristics
    38.
    发明授权
    Prismatic intraocular lenses and related methods of in situ alteration of their optical characteristics 失效
    棱镜型眼内透镜及其光学特性原位改变的相关方法

    公开(公告)号:US5728156A

    公开(公告)日:1998-03-17

    申请号:US693340

    申请日:1996-08-06

    IPC分类号: A61F2/16

    摘要: Prismatic intraocular lenses are disclosed for restoring visual function to an eye having macular degeneration. The lenses each include a convex lens optic for receiving and focusing light rays, a prismatic wedge located posterior to the convex lens optic for receiving and directing light rays to a first portion of a retina of the eye, and means for in situ alteration of the optical characteristics of the intraocular lens to direct light rays to a second functional portion of the retina.

    摘要翻译: 公开了棱镜式眼内透镜用于将视觉功能恢复到具有黄斑变性的眼睛。 透镜各自包括用于接收和聚焦光线的凸透镜光学元件,位于凸透镜光学器后面的棱镜楔,用于接收和引导光线到眼睛的视网膜的第一部分,以及用于原位改变 眼内透镜的光学特性将光线引导到视网膜的第二功能部分。

    Polyvinyl pyridine microspheres
    40.
    发明授权
    Polyvinyl pyridine microspheres 失效
    聚乙烯吡啶微球

    公开(公告)号:US4224359A

    公开(公告)日:1980-09-23

    申请号:US947478

    申请日:1978-10-02

    IPC分类号: C08F2/46 C08F226/06

    CPC分类号: C08F226/06 Y10T428/252

    摘要: Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

    摘要翻译: 微球通过稀释的乙烯基吡啶水溶液的钴γ射线引发聚合产生。 添加交联剂提供更高的表面积珠。 添加单体如甲基丙烯酸羟乙酯丙烯酰胺或甲基丙烯酰胺增加了珠的亲水性能和表面积。 在受控孔隙玻璃基板的存在下形成高表面积催化载体。