公开(公告)号：US08820929B2

公开(公告)日：2014-09-02

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: A61B3/10 ,  A61B3/14 ,  A61B3/00 ,  A61B3/103 ,  A61F9/007 ,  A61B3/15

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：US08506083B2

公开(公告)日：2013-08-13

申请号：US13154293

申请日：2011-06-06

Applicant: Yan Zhou ,  William Shea

Inventor： Yan Zhou ,  William Shea

IPC: 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.

公开(公告)号：US08454162B2

公开(公告)日：2013-06-04

申请号：US13354763

申请日：2012-01-20

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

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

IPC: A61B3/10

CPC classification number: A61B3/1015 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/0091 ,  A61B3/036 ,  A61B3/10 ,  A61B3/103 ,  A61B3/1035 ,  A61B3/13 ,  A61B3/14 ,  A61B5/7415 ,  A61B90/20 ,  G01J9/00 ,  G01J2003/064

Abstract: In one embodiment a wavefront sensor is configured to measure real time aberration values of a wavefront returned from the eye of a patient while an image of the eye of the patient is being viewed by a surgeon during an on-going vision correction procedure and for providing an output signal indicating real time aberration values and a display, coupled to the wavefront sensor, is configured to show a dynamic display indicating the real time aberration values to the surgeon and configured to be viewed by the surgeon while also viewing the image of the eye of the patient during the on-going vision correction procedure.

Abstract translation: 在一个实施例中，波前传感器被配置为测量从患者的眼睛返回的波前的实时像差值，同时外科医生在正在进行的视力矫正程序期间观察患者的眼睛的图像，并提供 指示实时像差值的输出信号和耦合到波前传感器的显示器被配置为向外科医生显示指示实时像差值的动态显示，并被配置为由外科医生观察，同时还观察眼睛的图像 在持续的视力矫正过程中患者。

公开(公告)号：US20120268717A1

公开(公告)日：2012-10-25

申请号：US13459914

申请日：2012-04-30

Applicant: Yan Zhou ,  William Shea ,  Phil Baker

Inventor： Yan Zhou ,  William Shea ,  Phil Baker

IPC: A61B3/10

CPC classification number: A61B3/1015 ,  A61B3/103 ,  A61B3/12 ,  G01J1/0414 ,  G01J1/0437 ,  G01J9/00

Abstract: One embodiment of the present invention is an ophthalmic wavefront sensor for use with an ophthalmic microscope to provide continuous measurements of the refractive state of an eye. The wavefront sensor operates in both parallel sampling and lock-in detection mode by synchronizing the pulsing of the light source with a multiple number of position sensing devices/detectors used for detecting the centroid position of the sampled sub-wavefronts. Other embodiments include a beam scanner to sample selected portions of the wavefront and a live image sensor and a tracking deflector.

Abstract translation: 本发明的一个实施例是眼用波前传感器，用于与眼科显微镜一起提供眼睛的屈光状态的连续测量。 通过使光源的脉冲与用于检测采样子波前的质心位置的多个位置感测装置/检测器同步，波前传感器以并行采样和锁定检测模式工作。 其他实施例包括用于对波前的选定部分进行采样的光束扫描器以及实时图像传感器和跟踪偏转器。

公开(公告)号：US08195262B2

公开(公告)日：2012-06-05

申请号：US11494394

申请日：2006-07-26

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

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

IPC: A61B5/1455 ,  H05B37/00

CPC classification number: A61B5/14551

Abstract: A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternatively discharged for their corresponding light emitters through the same inductor. Also, the magnetic susceptibility of the LED drive circuit is reduced by using magnetic flux canceling in the inductor. In one embodiment, a toroidal inductor is used with geometric symmetry and its magnetic flux. In other embodiment, a dual core closed bobbin shielded inductor is used.

Abstract translation: 一种用于血氧计的光发射器驱动电路，其利用单个电感器来驱动多个发光体。 电感器连接到开关电路到多个储能电路，如电容器。 这些交替电荷使用相同的电感。 随后，电容器通过相同的电感器交替地放电用于其对应的发光体。 此外，通过在电感器中使用磁通量消除来减少LED驱动电路的磁化率。 在一个实施例中，使用具有几何对称性及其磁通量的环形电感器。 在另一个实施例中，使用双核闭合筒管屏蔽电感器。

公开(公告)号：US08100530B2

公开(公告)日：2012-01-24

申请号：US12605219

申请日：2009-10-23

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

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

IPC: A61B3/10

CPC classification number: A61B3/1015 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/0091 ,  A61B3/036 ,  A61B3/10 ,  A61B3/103 ,  A61B3/1035 ,  A61B3/13 ,  A61B3/14 ,  A61B5/7415 ,  A61B90/20 ,  G01J9/00 ,  G01J2003/064

Abstract: Example embodiments include a dynamic wavefront sensor, a controllable wavefront offsetting element and a controller that controls the controllable wavefront offsetting element to offset selected non-plane wave aberration components in order to allow remaining non-plane wave aberration components to be more efficiently detected and measured.

Abstract translation: 示例实施例包括动态波前传感器，可控波前偏移元件和控制器，其控制可控波前偏移元件以偏移所选择的非平面波像差分量，以便更有效地检测和测量剩余的非平面波像差分量 。

公开(公告)号：US20090211586A1

公开(公告)日：2009-08-27

申请号：US12391218

申请日：2009-02-23

Applicant: William Shea ,  Keith Mullowney ,  Barry Linder ,  Phil Baker ,  Shelly Reed ,  Willem Crone ,  Yeou-Yen Cheng

Inventor： William Shea ,  Keith Mullowney ,  Barry Linder ,  Phil Baker ,  Shelly Reed ,  Willem Crone ,  Yeou-Yen Cheng

IPC: A61B19/00

CPC classification number: A61B3/00 ,  A61B46/10 ,  A61B46/20

Abstract: In one embodiment, a pliable film adapted to conform to parts of an optical examination device and provide a barrier between the eye of a patient being examined and the optical examination device.

Abstract translation: 在一个实施例中，柔性膜适于符合光学检查装置的部件并且在所检查的患者的眼睛和光学检查装置之间提供屏障。

公开(公告)号：US07400919B2

公开(公告)日：2008-07-15

申请号：US11495415

申请日：2006-07-28

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

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

IPC: A61B5/1455

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：US07373192B2

公开(公告)日：2008-05-13

申请号：US10788239

申请日：2004-02-25

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

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

IPC: A61B5/1455

CPC classification number: A61B5/1495 ,  A61B5/14551

Abstract: A pulse oximeter with drive lines for driving red and IR LEDs, and a drive circuit for driving those drive lines. A processor controls the drive circuit using a red zero output line and an IR zero output line directly connected between the processor and the drive circuit. This allows a control signal to directly control the turning off of either the red or IR drive transistors to prevent forward current flow through the red and IR LEDs by overriding the ongoing programmable logic state machine control of the drive transistors. The effects of crosstalk and capacitive coupling are reduced as a result.

Abstract translation: 具有用于驱动红色和红外LED的驱动线的脉冲血氧计，以及用于驱动这些驱动线的驱动电路。 处理器使用红色零输出线和直接连接在处理器和驱动电路之间的IR零输出线来控制驱动电路。 这允许控制信号直接控制红色或红外驱动晶体管的关断，以通过覆盖驱动晶体管的正在进行的可编程逻辑状态机控制来防止正向电流流过红色和红外LED。 结果，串扰和电容耦合的影响减小。

公开(公告)号：US07355539B2

公开(公告)日：2008-04-08

申请号：US11604589

申请日：2006-11-27

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

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