公开(公告)号：US20130128228A1

公开(公告)日：2013-05-23

申请号：US13745738

申请日：2013-01-18

Applicant: Yan Zhou ,  William Shea

Inventor： Yan Zhou ,  William Shea

IPC: A61B3/10

CPC classification number: A61B3/1015 ,  A61B3/1005 ,  A61B3/102 ,  A61B3/103 ,  A61B3/107 ,  A61B3/117 ,  G01J9/00 ,  G01J2003/064 ,  G02B13/0095 ,  G02B17/0896

Abstract: Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment optically relays a wavefront from an eye pupil or corneal plane to a wavefront sampling plane in such a manner that somewhere in the relaying process, the wavefront beam from the eye within a large eye diopter range is made to reside within a desired physical dimension over a certain axial distance range in a wavefront image space and/or a Fourier transform space. As a result, a wavefront beam shifting device can be disposed there to fully intercept and hence shift the whole beam to transversely shift the relayed wavefront.

Abstract translation: 公开了用于视力矫正或评估过程的大动态范围连续波前传感器的示例实施例。 一个示例性实施例将波前从眼睛瞳孔或角膜平面中继到波前采样平面，使得在中继过程中的某个地方，来自大眼睛屈光度范围内的眼睛的波前光束被放置在期望的物理 在波前图像空间和/或傅里叶变换空间中的某个轴向距离范围内的尺寸。 结果，波前波束移动装置可以放置在那里以完全拦截并因此移动整个波束以横向移动中继的波前。

公开(公告)号：US20120307205A1

公开(公告)日：2012-12-06

申请号：US13154293

申请日：2011-06-06

Applicant: Yan Zhou ,  William Shea

Inventor： Yan Zhou ,  William Shea

IPC: A61B3/13 ,  A61B3/14 ,  A61B3/10

CPC classification number: A61B3/1015 ,  A61B90/20 ,  G01J9/00 ,  G02B27/0018

Abstract: One embodiment disclosed is a compact wavefront sensor module to be attached to or integrated with an ophthalmic instrument for eye examination and/or vision correction procedures. The front lens for relaying the wavefront from the eye to a wavefront sampling plane is positioned at the optical input port of the wavefront sensor module. The front lens is shared by the wavefront sensor and the ophthalmic instrument, and the wavefront sensor module can be made very compact while still being able to cover a large eye wavefront measurement diopter range.Another embodiment disclosed is an ophthalmic device for measuring properties of a subject eye including an ophthalmic instrument integrated with the wavefront sensor module.

Abstract translation: 所公开的一个实施例是紧凑的波前传感器模块，其被附接到眼科仪器或用于眼睛检查和/或视力矫正程序的集成。 用于将波前从眼睛中继到波前采样平面的前透镜位于波前传感器模块的光输入端口。 前透镜由波前传感器和眼科仪器共享，并且波前传感器模块可以制造得非常紧凑，同时仍然能够覆盖大眼睛波前测量屈光度范围。 所公开的另一实施例是用于测量被检眼的性质的眼科装置，包括与波前传感器模块集成的眼科仪器。

公开(公告)号：US20070132618A1

公开(公告)日：2007-06-14

申请号：US11604589

申请日：2006-11-27

Applicant: Ethan Petersen ,  William Shea ,  Bradford Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford Chew

IPC: H03M3/00

CPC classification number: A61B5/14551 ,  A61B5/7228 ,  H03M3/424 ,  H03M3/456 ,  H03M3/464

Abstract: There is provided a pulse oximeter circuit including a feedback circuit configured to receive a digital output signal of a multi-bit sigma-delta modulator and generate a pulse width modulated signal (PWM). The PWM signal is directed to a first switching circuit and a D flip-flop. The first switching circuit provides a first or second reference voltage as a feedback signal to the multi-bit sigma-delta modulator. The D flip-flop generates a sample and hold signal. The sample and hold signal controls a second switching circuit coupled to the input of the multi-bit sigma-delta modulator.

Abstract translation: 提供了一种脉冲血氧计电路，其包括被配置为接收多位Σ-Δ调制器的数字输出信号并产生脉宽调制信号（PWM）的反馈电路。 PWM信号被引导到第一开关电路和D触发器。 第一开关电路提供第一或第二参考电压作为多位Σ-Δ调制器的反馈信号。 D触发器产生采样和保持信号。 采样和保持信号控制耦合到多位Σ-Δ调制器的输入端的第二开关电路。

公开(公告)号：US20050184895A1

公开(公告)日：2005-08-25

申请号：US10787542

申请日：2004-02-25

Applicant: Ethan Petersen ,  William Shea ,  Bradford Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford Chew

IPC: A61B5/00 ,  H03M3/04 ,  H03M3/00

CPC classification number: A61B5/14551 ,  A61B5/7228 ,  H03M3/424 ,  H03M3/456 ,  H03M3/464

Abstract: An oximeter uses a sigma-delta modulator and a multi-bit ADC with PWM feedback enabling high precision multi-bit conversion. Demodulation is done in software, thus requiring only a single hardware path for both red and IR. Multiple capacitors are switched into the integrator in the sigma-delta modulator, with different capacitors for red, IR and dark signals, thus enabling the use of the single hardware path. A switching circuit at the input of the sigma-delta modulator acts as a sample and hold, controlled by the PWM feedback.

Abstract translation: 血氧计使用Σ-Δ调制器和具有PWM反馈的多位ADC，实现高精度多位转换。 解调是在软件中完成的，因此只需要一个红色和红外的硬件路径。 多个电容器被切换到Σ-Δ调制器中的积分器，具有用于红色，红外和暗信号的不同电容器，从而能够使用单个硬件路径。 Σ-Δ调制器输入端的开关电路用作采样和保持，由PWM反馈控制。

公开(公告)号：US08118431B2

公开(公告)日：2012-02-21

申请号：US12606982

申请日：2009-10-27

Applicant: William Shea ,  Phillip Baker ,  Barry Linder

Inventor： William Shea ,  Phillip Baker ,  Barry Linder

IPC: A61B3/00 ,  G02C7/04

CPC classification number: G02B21/18 ,  A61B3/13 ,  G02B21/0012

Abstract: This invention discloses an apparatus that is attached to the objective lens of a microscope to split its field of view into at least two. In one embodiment, a mirrored gonio lens is snapped to the objective of an ophthalmic surgical microscope to provide a view of the eye's anterior surface and a view of the eye's anterior chamber.

Abstract translation: 本发明公开了一种附着在显微镜的物镜上以将其视场分成至少两个的装置。 在一个实施例中，镜像的镜角镜被咬合到眼科手术显微镜的目的，以提供眼睛前表面的视图和眼睛前房的视图。

公开(公告)号：US20120026466A1

公开(公告)日：2012-02-02

申请号：US13198442

申请日：2011-08-04

Applicant: Yan Zhou ,  William Shea

Inventor： Yan Zhou ,  William Shea

IPC: A61B3/10

CPC classification number: A61B3/1015 ,  A61B3/1005 ,  A61B3/102 ,  A61B3/103 ,  A61B3/107 ,  A61B3/117 ,  G01J9/00 ,  G01J2003/064 ,  G02B13/0095 ,  G02B17/0896

Abstract: Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment optically relays a wavefront from an eye pupil or corneal plane to a wavefront sampling plane in such a manner that somewhere in the relaying process, the wavefront beam from the eye within a large eye diopter range is made to reside within a desired physical dimension over a certain axial distance range in a wavefront image space and/or a Fourier transform space. As a result, a wavefront beam shifting device can be disposed there to fully intercept and hence shift the whole beam to transversely shift the relayed wavefront.

Abstract translation: 公开了用于视力矫正或评估过程的大动态范围连续波前传感器的示例实施例。 一个示例性实施例将波前从眼睛瞳孔或角膜平面中继到波前采样平面，使得在中继过程中的某个地方，来自大眼睛屈光度范围内的眼睛的波前光束被放置在期望的物理 在波前图像空间和/或傅里叶变换空间中的某个轴向距离范围内的尺寸。 结果，波前波束移动装置可以放置在那里以完全拦截并因此移动整个波束以横向移动中继的波前。

公开(公告)号：US20110242483A1

公开(公告)日：2011-10-06

申请号：US13034648

申请日：2011-02-24

Applicant: William Shea ,  Brad Nordstrom ,  Brad Chew ,  Yan Zhou

Inventor： William Shea ,  Brad Nordstrom ,  Brad Chew ,  Yan Zhou

IPC: A61B3/14

CPC classification number: A61B3/1015 ,  A61B3/0058 ,  A61B3/1035 ,  A61B3/145 ,  A61B3/152 ,  A61F9/007

Abstract: One embodiment is an apparatus/system for providing feedback to a procedure. The apparatus includes a real time wavefront sensor for measuring the wavefront of an optical beam, a real time video camera for capturing a scene where the optical beam comes from, a computer for processing the captured wavefront data and synchronizing the data with the video and outputting the synchronized information to a display, and a display for simultaneously displaying the synchronized wavefront and video information. Another embodiment of the present invention is a method for providing feedback to a procedure. The method involves the steps of measuring the wavefront of an optical beam with a real time wavefront sensor; capturing a video of a scene from which the optical beam comes; processing the captured wavefront data and synchronizing it with the video; and simultaneously displaying the wavefront information with the video on the same display screen.

Abstract translation: 一个实施例是用于向程序提供反馈的装置/系统。 该装置包括用于测量光束波前的实时波前传感器，用于捕获光束所来自场景的实时摄像机，用于处理所捕获的波前数据并使数据与视频同步并输出的计算机 与显示器的同步信息，以及用于同时显示同步波阵面和视频信息的显示器。 本发明的另一个实施例是一种向程序提供反馈的方法。 该方法包括用实时波前传感器测量光束的波前的步骤; 捕获来自光束的场景的视频; 处理捕获的波前数据并与视频同步; 并同时在同一显示屏上显示带有视频的波前信息。

公开(公告)号：US20100121442A1

公开(公告)日：2010-05-13

申请号：US12606017

申请日：2009-10-26

Applicant: William Shea ,  Barry Linder ,  Phillip Baker ,  Yan Zhou

Inventor： William Shea ,  Barry Linder ,  Phillip Baker ,  Yan Zhou

IPC: A61F2/16

CPC classification number: A61K9/0048 ,  A61B3/00 ,  A61B3/125 ,  A61K49/00

Abstract: The invention discloses an optical coupling gel that has a set of desired features for application in eye imaging, including being approved for eye contact, optically transparent, able to maintain normal hydration of the ocular surface, flexible and capable of maintaining a distinct shape, minimal in breakdown/change during use, and easily dispensable/applicable. In one embodiment, the gel is made of Sodium Carboxy Methylcellulose (SCMC), where the amount of the cellulose determines the viscosity of the gel for its particular application. The right amount of gel is contained in an applicator for application to one or two eyes.

Abstract translation: 本发明公开了一种光学耦合凝胶，其具有用于眼睛成像中的一组所需特征，包括被认可用于眼睛接触，光学透明的，能够保持眼表面的正常水合，柔性并能够保持不同形状，最小化 在使用过程中发生故障/更换，并且易于安装/适用。 在一个实施方案中，凝胶由羧甲基纤维素钠（SCMC）制成，其中纤维素的量决定了其特定用途的凝胶的粘度。 适量的凝胶包含在施用于一只或两只眼睛的施用器中。

公开(公告)号：US20090005662A1

公开(公告)日：2009-01-01

申请号：US12172981

申请日：2008-07-14

Applicant: Ethan Petersen ,  William Shea ,  Bradford B. Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford B. Chew

IPC: A61B5/02

CPC classification number: A61B5/14552 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/14551 ,  A61B5/7203 ,  A61B5/7225 ,  A61B5/7228 ,  A61B5/725 ,  A61B5/7278

Abstract: A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and lower than any harmonic of 50, 60, 100 or 120 Hz, to filter ambient light interference, while choosing an optimum demodulation frequency that avoids interference from the notch filter or from harmonics of the line interference. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal.

Abstract translation: 一种脉冲血氧计方法和装置，其提供（1）陷波滤波器，其在调制频率和共同使用的电力线频率（50,60,100和120）的公倍数之间的距离处，以及（2）大于 一个人的最高脉冲频率，低于50,60,100或120Hz的任何谐波，以过滤环境光干扰，同时选择避免陷波滤波器干扰或线干扰谐波的最佳解调频率。 此外，在每个发光体波长之前和之后都测量任何低频干扰（例如电力线干扰）的环境光，然后从检测到的信号中减去环境光的平均值。

公开(公告)号：US06244025B1

公开(公告)日：2001-06-12

申请号：US09384534

申请日：1999-08-27

Applicant: David Ferris ,  William Shea ,  Henry Nordberg

Inventor： David Ferris ,  William Shea ,  Henry Nordberg

IPC: A01D3403

CPC classification number: A01D34/64 ,  A01D2101/00 ,  B60B33/0005 ,  B60B33/0015 ,  B60B33/0021 ,  B60B33/0039 ,  B60B33/0057 ,  B60B33/0068 ,  B60B33/0073 ,  B60G3/01 ,  B60G3/18 ,  B60G11/16 ,  B60G2200/144 ,  B60G2204/124 ,  B60G2204/148 ,  B60G2204/4232 ,  B60G2206/50 ,  B60G2300/084 ,  Y10S56/03

Abstract: A lawn mower includes a front wheel suspension system as well as a rear wheel suspension system. A load compensation adjuster is employed as part of the rear wheel suspension system that compensates for riders having significantly differing weights, as well as for weight changes occurring during the mowing operation, such as from grass clippings accumulating in a grass catcher bag.

Abstract translation: 割草机包括前轮悬挂系统以及后轮悬挂系统。 使用负载补偿调节器作为后轮悬架系统的一部分，其补偿具有显着不同重量的车手以及在割草操作期间发生的重量变化，例如积聚在草地捕捉袋中的草屑。