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    Method of measuring diffractive lenses
    31.
    发明授权
    Method of measuring diffractive lenses 有权
    测量衍射透镜的方法

    公开(公告)号：US07659970B1

    公开(公告)日：2010-02-09

    申请号：US11564498

    申请日：2006-11-29

    Applicant: Michael J. Simpson ,  Jihong Xie

    Inventor： Michael J. Simpson ,  Jihong Xie

    IPC: G01B9/00

    CPC classification number: G01M11/0292

    Abstract: A method and system for measuring an optical property of a multi-focal lens are disclosed. One embodiment of the method comprises: filtering out light transmitted by all but one of a plurality of diffraction orders of the lens to provide an unfiltered light from a single diffraction order; receiving the unfiltered light at a wavefront detector; and analyzing the unfiltered light at the wavefront detector to measure the optical property. The multi-focal lens can be a multi-focal diffractive intra-ocular lens. The measured optical property can be a discontinuity in the lens surface. Filtering can comprise blocking all but the unfiltered light using an aperture operable to let through the unfiltered light from the single diffraction order, and/or blocking all but the unfiltered light using an opaque obstruction operable to let through only a selected amount of light corresponding to the light transmitted by the single diffraction order. The method can further comprise generating an image quality parameter, such as a modulation transfer function, based on the measured optical property.

    Abstract translation: 公开了一种用于测量多焦点透镜的光学特性的方法和系统。 该方法的一个实施例包括：滤除由透镜的多个衍射级中的除了一个以外的全部透射的光以从单个衍射级提供未滤光的光; 在波前检测器处接收未过滤的光; 并分析波前检测器上的未过滤光以测量光学性质。 多焦点透镜可以是多焦点衍射眼内透镜。 所测量的光学特性可以是透镜表面的不连续性。 过滤可以包括使用可操作以通过来自单个衍射级的未过滤的光来进行的所有未过滤的光的遮挡，和/或使用不透明的遮挡物阻挡所有的未过滤的光，所述不透明遮挡可操作地仅通过选定量的对应于 光由单一的衍射顺序传输。 该方法还可以包括基于所测量的光学特性来生成诸如调制传递函数的图像质量参数。

    Contrast-Enhancing Aspheric Intraocular Lens
    32.
    发明申请
    Contrast-Enhancing Aspheric Intraocular Lens 审中-公开
    对比增强非球面人工晶状体

    公开(公告)号：US20090204208A1

    公开(公告)日：2009-08-13

    申请号：US12425002

    申请日：2009-04-16

    Applicant: Michael J. Simpson

    Inventor： Michael J. Simpson

    IPC: A61F2/16

    CPC classification number: A61F2/1613 ,  A61F2/164

    Abstract: The present invention provides an intraocular lens (IOL) having an optic with a posterior and an anterior refractive surfaces, at least one of which has an aspherical profile, typically characterized by a non-zero conic constant, for controlling the aberrations of a patient's eye in which the IOL is implanted. Preferably, the IOL's asphericity, together with the aberrations of the patient's eye, cooperate to provide an image contrast characterized by a calculated modulation transfer function (MTF) of at least about 0.25 and a depth of field of at least about 0.75 Diopters.

    Abstract translation: 本发明提供一种眼内透镜（IOL），其具有具有后折射表面和前折射表面的光学元件，其至少一个具有非球面轮廓，通常以非零锥形常数为特征，用于控制患者眼睛的像差 其中植入IOL。 优选地，IOL的非球面性以及患者眼睛的像差协同提供以计算出的至少约0.25的调制传递函数（MTF）和至少约0.75屈光度的景深的特征的图像对比。

    ZONAL DIFFRACTIVE MULTIFOCAL INTRAOCULAR LENSES
    33.
    发明申请
    ZONAL DIFFRACTIVE MULTIFOCAL INTRAOCULAR LENSES 审中-公开
    区域性差异多镜面镜片

    公开(公告)号：US20090088840A1

    公开(公告)日：2009-04-02

    申请号：US12242106

    申请日：2008-09-30

    Applicant: Michael J. Simpson ,  Mutlu Karakelle

    Inventor： Michael J. Simpson ,  Mutlu Karakelle

    IPC: A61F2/16 ,  G02C7/06

    CPC classification number: G02C7/044 ,  A61F2/1618 ,  A61F2/1654 ,  G02C7/042 ,  G02C2202/20

    Abstract: The present invention generally provides multifocal ophthalmic lenses, e.g., multifocal intraocular lenses, that employ a central refractive region for providing a refractive focusing power and a diffractive region for providing two diffractive focusing powers. In many cases, the refractive focusing power provided by the lens's central region corresponds to a far-focusing power that is substantially equal to one of the diffractive focusing powers while the other diffractive power corresponds to a near-focusing power. As such, in many cases, the focusing properties of the lenses are dominated by the far-focus ability, especially for small pupil sizes.

    Abstract translation: 本发明通常提供多焦点眼科镜片，例如多焦点眼内透镜，其使用用于提供折射聚焦能力的中心折射区域和用于提供两个衍射聚焦光焦度的衍射区域。 在许多情况下，由透镜的中心区域提供的折射聚焦功率对应于基本上等于衍射聚焦光焦度之一的远焦点光焦度，而另一衍射光焦度对应于近聚焦光焦度。 因此，在许多情况下，透镜的聚焦属性由远焦点能力主导，特别是对于小瞳孔尺寸。

    Intraocular lens
    34.
    发明授权
    Intraocular lens 有权
    人工晶状体

    公开(公告)号：US07350916B2

    公开(公告)日：2008-04-01

    申请号：US11397332

    申请日：2006-04-04

    Applicant: Xin Hong ,  Jihong Xie ,  Stephen J. Van Noy ,  Dan Stanley ,  Mutlu Karakelle ,  Xiaoxiao Zhang ,  Michael J. Simpson

    Inventor： Xin Hong ,  Jihong Xie ,  Stephen J. Van Noy ,  Dan Stanley ,  Mutlu Karakelle ,  Xiaoxiao Zhang ,  Michael J. Simpson

    IPC: G02C7/02 ,  A61F2/16

    CPC classification number: A61F2/1613 ,  A61F2/1637 ,  G02C7/02

    Abstract: In one aspect, the present invention provide an ophthalmic lens (e.g., an IOL) that includes an optic having an anterior optical surface and a posterior optical surface, where the optic provides an optical power in a range of about 16 D to about 25 D as measured in a medium having an index of refraction substantially similar to that of the eye's aqueous humor (e.g., about 1.336). At least one of the optical surfaces is characterized by an aspherical base profile such that the optic exhibits a negative spherical aberration in a range of about −0.202 microns to about −0.190 microns across the power range.

    Abstract translation: 一方面，本发明提供一种眼科镜片（例如，IOL），其包括具有前光学表面和后光学表面的光学元件，其中所述光学元件提供在约16D至约25D的范围内的光焦度 如在具有基本上类似于眼睛房水的折射率的介质中测量的（例如，约1.336）。 至少一个光学表面的特征在于非球面基部轮廓，使得光学器件在功率范围内在约-0.202微米至约-0.190微米的范围内呈现负球面像差。

    Timing recovery scheme for packet speech in multiplexing environment of voice with data applications
    35.
    发明授权
    Timing recovery scheme for packet speech in multiplexing environment of voice with data applications 失效
    数据语音复用环境中数据包语音的定时恢复方案

    公开(公告)号：US5699481A

    公开(公告)日：1997-12-16

    申请号：US443651

    申请日：1995-05-18

    Applicant: Eyal Shlomot ,  Michael J. Simpson ,  Qiang Ye

    Inventor： Eyal Shlomot ,  Michael J. Simpson ,  Qiang Ye

    IPC: G10L21/02 ,  G10L19/00 ,  H04J3/06 ,  H04L12/64 ,  G10L9/14 ,  H04J3/07

    CPC classification number: H04L12/6418 ,  H04J3/0632 ,  H04L2012/6481 ,  H04L2012/6489

    Abstract: Multiple speech bit-stream frame buffers are used between the controller and the speech decoder. Whenever excessive or missing speech packages are detected, the speech decoder switches to a special corrective mode. If there is too much, the buffered frames are played out fast; if there is too little the buffered frames are played out slowly. For the fast play, some speech information has to be discarded, while for the slow play some speech-like information has to be synthesized. The speech may be handled in sub-frame units, which may be 52 samples at a time. Low energy, silent or unvoiced sub-frames, which also indicate non-periodicity, are detected and manipulated. Moreover, the decoded signal is manipulated at the excitation phase, before the final LPC synthesis filter, resulting in a transparent perceptual effect on the manipulated speech quality. Additionally, the buffers are enlarged such that the problem caused by controller asynchronicity is eliminated. Further, for bulk delay caused by multiplexing data and speech transmissions, the buffers maintain the smallest number of speech packets necessary to prevent buffer underflow during a data packet transmission while minimizing speech delay and preserving data transmission efficiency.

    Abstract translation: 在控制器和语音解码器之间使用多个语音比特流帧缓冲器。 每当检测到过多或丢失的语音包时，语音解码器切换到特殊的校正模式。 如果太多，缓冲的帧将被快速播放; 如果缓存的帧缓存太慢， 对于快速播放，一些语音信息必须被丢弃，而对于慢播，一些语音信息必须被合成。 语音可以以子帧单位处理，一次可以是52个样本。 低能量，无声或无声子帧，也表示非周期性，被检测和操纵。 此外，在最终LPC合成滤波器之前，在激励阶段处理解码信号，导致对被操纵的语音质量的透明感知效应。 此外，缓冲器被放大，从而消除了由控制器异步引起的问题。 此外，对于由复用数据和语音传输引起的批量延迟，缓冲器保持在数据分组传输期间防止缓冲器下溢所需的最小数量的语音分组，同时最小化语音延迟并保持数据传输效率。

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