公开(公告)号：US06907148B2

公开(公告)日：2005-06-14

申请号：US10082290

申请日：2002-02-26

Applicant: David W. Gerdt ,  Martin C. Baruch ,  Charles Adkins

Inventor： David W. Gerdt ,  Martin C. Baruch ,  Charles Adkins

IPC: G01N21/85 ,  G02B6/26

CPC classification number: G01L1/243 ,  A61B5/024 ,  A61B5/0816 ,  A61B5/681 ,  A61B2562/0233 ,  A61B2562/146 ,  A61B2562/168 ,  G01D5/35345 ,  G02B6/2856

Abstract: A fiberoptic sensing apparatus comprises a fiberoptic coupler in which a plurality of optical fibers are joined through a fused coupling region, the optical fibers including at least one input optical fiber and a plurality of output optical fibers, the fiberoptic coupler distributing light incident to the input optical fiber among the plurality of output optical fibers. The coupler is mounted to a support member and configured such that at least a portion of the coupling region can be deflected to change the light distribution among the output fibers without putting the coupling region under tension. A fluid column is cooperative with a deflection member disposed to deflect the portion of the coupling region.

Abstract translation: 光纤感测装置包括光纤耦合器，其中多个光纤通过熔接耦合区域接合，光纤包括至少一个输入光纤和多个输出光纤，光纤耦合器分配入射到输入端的光 多个输出光纤之间的光纤。 耦合器安装到支撑构件并且构造成使得耦合区域的至少一部分可以被偏转以改变输出光纤之间的光分布，而不会使耦合区域处于张力下。 流体柱与设置成偏转联接区域的部分的偏转构件协作。

公开(公告)号：US4920412A

公开(公告)日：1990-04-24

申请号：US288549

申请日：1988-12-22

Applicant: David W. Gerdt ,  Lawrence H. Gilligan

Inventor： David W. Gerdt ,  Lawrence H. Gilligan

IPC: G01S17/10 ,  G01S17/89 ,  G02B27/00 ,  G02B27/01 ,  H04N7/00

CPC classification number: H04N7/005 ,  G01S17/107 ,  G01S17/89 ,  G02B27/017 ,  G02B27/0172 ,  G02B27/0176 ,  G02B2027/0138 ,  G02B2027/014

Abstract: The system includes a television camera or an optical viewer device with a gated image intensifier input. A short intense laser pulse is transmitted to illuminate the scene. The image intensifier is gated on after a time delay equal to the round trip transit time of the pulse from a range slice of interest. The image intensifier is gated on for a time interval equal to the width of the laser pulse. In the television camera embodiment, one laser pulse per frame is transmitted and successive range slices are observed during successive frames by successively increasing the time delay. The range slice images are stored in a buffer and read out to a television display. In the optical viewer device embodiment, a segmented horizontally sliced electro-optical shutter is disposed adjacent the phosphor output of the image intensifier to transmit successive range slice information to an eyepiece of the device for viewing by an observer. The optical viewer device may be mounted on a helmet with an inclinometer on the helmet providing signals to program the segmented shutter.

Abstract translation: 该系统包括具有门控图像增强器输入的电视摄像机或光学观察器装置。 传输短激光脉冲以照亮场景。 图像增强器在等于来自感兴趣的范围切片的脉冲的往返行进时间的时间延迟之后被门控。 图像增强器门控一段等于激光脉冲宽度的时间间隔。 在电视摄像机实施例中，每帧传送一个激光脉冲，并且在连续帧期间通过连续增加时间延迟来观察连续的范围片。 范围切片图像存储在缓冲器中并读出到电视显示器。 在光学观察器装置实施例中，分段水平切片电光快门设置在图像增强器的荧光体输出附近，以将连续的范围切片信息传送到装置的目镜，以便观察者观察。 光学观察器装置可以安装在头盔上，头盔上具有倾斜仪，提供信号以对分段的快门进行编程。

公开(公告)号：US4634858A

公开(公告)日：1987-01-06

申请号：US661630

申请日：1984-10-17

Applicant: David W. Gerdt ,  Lawrence H. Gilligan

Inventor： David W. Gerdt ,  Lawrence H. Gilligan

IPC: G02B6/00 ,  G01D5/353 ,  G01L1/24 ,  G01P15/093 ,  G02B6/28 ,  G02B6/287 ,  G02F1/01 ,  G02F1/19 ,  G02F1/313 ,  H01J5/16 ,  H01J40/14

CPC classification number: G02B6/2835 ,  G01D5/35345 ,  G01D5/35377 ,  G01L1/241 ,  G01P15/093 ,  G02B6/283 ,  G02F1/0134 ,  G02F1/3131

Abstract: A variable coupler fiberoptic sensor in which a fused, tapered, biconical directional fiberoptic coupler is encapsulated in a stress birefringent medium whose index of refraction changes with applied stress.The ratio of power in the output fibers of the directional coupler varies with the change of index of refraction of the encapsulating medium as stress is applied to the medium.

Abstract translation: 可变耦合器光纤传感器，其中熔融的，锥形的双锥定向光纤耦合器被封装在应力双折射介质中，其折射率随施加的应力而变化。 定向耦合器的输出光纤中的功率比随密封介质的应力变化而随封装介质的折射率变化而变化。

公开(公告)号：US06723054B1

公开(公告)日：2004-04-20

申请号：US09763657

申请日：2001-02-26

Applicant: Martin C. Baruch ,  David W. Gerdt ,  Charles Adkins

Inventor： Martin C. Baruch ,  David W. Gerdt ,  Charles Adkins

IPC: A61B502

CPC classification number: A61B5/0285 ,  A61B5/02416 ,  A61B5/7239 ,  A61B7/04 ,  A61B2562/0204 ,  A61B2562/0266 ,  A61B2562/168

Abstract: In a method of measuring pulse transit time of a living subject, first and second pulse wave signals are produced by sensing the pulse at first and second pulse points, respectively, the first and second pulse points being spaced from one another. The first and second pulse wave signals are differentiated, and based on the results, corresponding points of the first and second pulse wave signals are selected (e.g., points of maximum slope). The time delay between the selected points is determined, thus yielding the pulse transit time. A preferred apparatus measures pulse transit time using at least one fiberoptic pulse sensor including a fused-fiber coupling region having at least a portion that can be deflected without putting the coupling region under tension.

Abstract translation: 在测量活体受试者的脉搏传播时间的方法中，通过分别在第一和第二脉冲点检测脉冲，产生第一和第二脉冲波信号，第一和第二脉冲点彼此间隔开。 第一和第二脉波信号是微分的，并且基于该结果，选择第一和第二脉波信号的对应点（例如，最大斜率点）。 确定所选点之间的时间延迟，从而产生脉冲传播时间。 优选的装置使用至少一个光纤脉冲传感器来测量脉冲传播时间，所述光纤脉冲传感器包括具有至少一部分可以偏转的熔融纤维耦合区域，而不会使耦合区域处于张力下。

公开(公告)号：US06687424B1

公开(公告)日：2004-02-03

申请号：US09763718

申请日：2001-02-26

Applicant: David W. Gerdt ,  Martin C. Baruch ,  Charles Adkins

Inventor： David W. Gerdt ,  Martin C. Baruch ,  Charles Adkins

IPC: G02B626

CPC classification number: A61B5/6892 ,  A61B5/02416 ,  A61B5/11 ,  A61B7/04 ,  A61B2562/0204 ,  A61B2562/0266 ,  A61B2562/168

Abstract: A sensing pad assembly for monitoring acoustic activity or motion of an object supported on the pad utilizes an improved fiberoptic sensor as a pressure transducing element to convert pressure fluctuations due to the acoustic activity or motion to an output that changes in accordance with the pressure fluctuations. The sensor has an improved design that permits deflection of the coupler fusion region without accompanying tension. In a preferred embodiment, the coupler fusion region is arranged substantially in a U-shape so that the fiberoptic leads of the sensor may be located adjacent to each other at one side of the sensor.

Abstract translation: 用于监测支撑在垫上的物体的声学活动或运动的感测垫组件利用改进的光纤传感器作为压力传感元件，以将由于声学活动或运动引起的压力波动转换成根据压力波动而变化的输出。 传感器具有改进的设计，允许耦合器熔融区域的偏转而不伴随张力。 在优选实施例中，耦合器熔化区域基本上被布置成U形，使得传感器的光纤引线可以位于传感器一侧彼此相邻的位置。

公开(公告)号：US5074309A

公开(公告)日：1991-12-24

申请号：US444920

申请日：1989-12-04

Applicant: David W. Gerdt

Inventor： David W. Gerdt

IPC: A61B5/025 ,  A61B5/024 ,  A61B5/055 ,  A61B7/04 ,  G01H9/00 ,  G01P15/093

CPC classification number: A61B5/02433 ,  A61B5/055 ,  A61B7/04 ,  G01H9/004 ,  G01P15/093

Abstract: Cardiovascular sounds from a patient's body are monitored by placing a fiber optic coupler sensor at an appropriate location on the patient to sense the sounds. The sensor is comprised of all dielectric material having a variable coupler waist region encapsulated in material with index of refraction that varies with applied stress. Stress is induced in the encapsulating material in response to the cardiovascular sounds. Sensor configurations include encapsulating material membranes with curved surfaces to enhance sensitivity.

公开(公告)号：US5028801A

公开(公告)日：1991-07-02

申请号：US465717

申请日：1990-01-16

Applicant: David W. Gerdt

Inventor： David W. Gerdt

IPC: H04J14/00 ,  H04J14/08

CPC classification number: H04J14/08 ,  H04J14/002

Abstract: The pulsed input light source of the fiber-optic sensor array is divided into a plurality of input light sources for the respective sensors of the array by a network of low-loss single mode fixed ratio fiber-optic couplers. The input light is applied to the input fiber of a first fixed ratio coupler, the output fibers thereof providing the input fibers of further fixed ratio couplers and so forth until the light is divided into the appropriate number of sources. The divided light sources are applied to the input fibers of the variable ratio fiber-optic coupler sensors of the array through differing lengths of optical fiber so that the input light pulses impinge upon the sensors of the array at different times. The output fibers of the sensors are coupled to multimode busses through low-loss taps.In an alternative embodiment for highly imbalanced ratio fiber-optic coupler sensors, the pulsed input light is applied to the input fiber of a first sensor. The high percentage output leg of the first sensor provides the input to a second sensor of the array, the high percentage output fiber thereof providing the input to the next array sensor. The low percentage legs of the sensors, which carry the information, are tapped into a multimode fiber-optic bus.

公开(公告)号：US20120238887A1

公开(公告)日：2012-09-20

申请号：US13231703

申请日：2011-09-13

Applicant: David W. Gerdt ,  Charles Adkins ,  Martin C. Baruch

Inventor： David W. Gerdt ,  Charles Adkins ,  Martin C. Baruch

IPC: A61B5/022 ,  A61B5/026 ,  A61B5/025

CPC classification number: A61B5/02116 ,  A61B5/6826

Abstract: A hydrostatic finger cuff for blood flow property analysis is provided which includes an elongated substrate member having a pair of opposing long edges and a pair of opposing short edges. The hydrostatic finger cuff is configured to form a frustoconical shell when the ends of the cuff are overlapped and releasably connected together. The interior of the frustoconical shell conforms to the shape of the finger or thumb. One side of the elongated member has an inflatable member that has a pressurizable interior region. A tube is fixed to the inflatable member and is in pneumatic communication with the interior of the inflatable member inflatable to a maximum of no more than 60 mmHg. The inflatable member completely circumscribes the finger and provides substantially uniform contact across the entire length of a phalange.

Abstract translation: 提供了一种用于血流特性分析的流体静压指套，其包括具有一对相对的长边缘和一对相对的短边缘的细长基底构件。 静水压手指套被构造成当袖带的端部重叠并可释放地连接在一起时形成截头圆锥壳。 截头圆锥壳体的内部符合手指或拇指的形状。 细长构件的一侧具有可膨胀构件，其具有可加压的内部区域。 管固定到可充气构件并与可充气构件的内部气动连通，其充气至最大不超过60mmHg。 充气构件完全地围绕手指并且在整个长度上提供基本均匀的接触。

公开(公告)号：US5494798A

公开(公告)日：1996-02-27

申请号：US163709

申请日：1993-12-09

Applicant: David W. Gerdt ,  John C. Herr

Inventor： David W. Gerdt ,  John C. Herr

IPC: C12Q1/68 ,  G01N33/543 ,  G01N33/53

CPC classification number: G01N33/54373 ,  C12Q1/6825

Abstract: A coupled pair of fiber optic fibers are used an immunoassay device. The fibers are first coupled and then drawn down to a single mode diameter. The coupler senses output ratio change due to chemical, biochemical, bioaffinity, immunogenic-type interactions and other molecular activity occuring within the evanescent field. The fusion joint of the coupler is coated with a first immunoassay component, and then surrounded with a second immunoassay component.

Abstract translation: 一对耦合的光纤纤维用于免疫测定装置。 首先将纤维联接，然后将纤维拉伸至单一模式直径。 耦合器感知由于化学，生物化学，生物亲和力，免疫原性相互作用和ev逝期内发生的其他分子活性引起的输出比变化。 耦合器的融合接头涂覆有第一免疫测定组分，然后用第二免疫测定组分包围。

公开(公告)号：US06235046B1

公开(公告)日：2001-05-22

申请号：US09234921

申请日：1999-01-21

Applicant: David W. Gerdt

Inventor： David W. Gerdt

IPC: A61N506

CPC classification number: A61M21/00 ,  A61M2021/0044 ,  A61N5/0618 ,  A61N2005/0648 ,  A61N2005/0652 ,  A61N2005/0663

Abstract: A device for the application of artificial light to a user's retina is disclosed. A light source leads to a light focusing member that generates a light stream at, at least one transmission angle, to the user's retina, preventing the light from coming in contact with the user's fovea. In one embodiment, the light focusing member is a light ring containing a plurality of apertures around an outer periphery with light exiting through the apertures in a plurality of streams at a transmission angle. A vision aperture within the light ring has a periphery less than the outer periphery and is on a direct axis with the user's fovea to enable the user to maintain vision during chronotherapy. The light source can be distanced from the light focusing member and connect by a light transfer member, such as a optic fiber. In another embodiment, the light focusing member can be the frame of a pair of eyeglasses having lenses to enable user vision. The light source can be either proximate the apertures around the frame or distanced from the glasses with the light being transmitted from the light source to the glasses by a transfer member.

Abstract translation: 公开了一种将人造光应用于用户的视网膜的装置。 光源通向光聚焦部件，该光聚焦部件以至少一个透射角度向使用者的视网膜产生光流，防止光线与用户的中央凹接触。 在一个实施例中，光聚焦构件是光环，其包围围绕外周的多个孔，光以透射角以多个流离开孔。 光环内的视觉孔径具有小于外周边的周边，并且与用户的中央凹处在直接轴线上，以使得使用者能够在时间疗法期间保持视力。 光源可以远离聚光构件并且通过诸如光纤的光传递构件连接。 在另一个实施例中，光聚焦构件可以是具有透镜的一对眼镜的框架，以使用户可视。 光源可以靠近框架周围的孔或远离眼镜，其中光从光源通过传送构件传输到眼镜。