公开(公告)号：US5091965A

公开(公告)日：1992-02-25

申请号：US553995

申请日：1990-07-16

申请人： Seiji Kobayashi ,  Demetri Psaltis

发明人： Seiji Kobayashi ,  Demetri Psaltis

IPC分类号： G06F15/18 ,  G06G7/60 ,  G06N3/00 ,  G06N3/02 ,  G06N99/00 ,  G06T7/00

CPC分类号： G06N3/02

摘要： A video image processing apparatus in which an analog video image can be satisfactorily converted to a binary value by calculating theshold values of respective neurons and coupling coefficients of respective synapses of a neural network circuit on the basis of the input analog video image and a pre-determined function.By arranging so a difference component E between the input analog video image and the binary value video image is defined as ##EQU1## where .alpha. is the coefficient, u.sub.(i) is the value which results from converting the input analog video image into the binary value, and P.sub.(i,j) is the value obtained from the function and g.sub.(i) is the value which is obtained from the function and the input analog video image, it is possible to convert the video image into the binary value by the use of the neural network circuit.Further, by setting that the function to have a frequency characteristic of a human's eyes, it is possible to obtain a binary value video image which is excellent from a human's visual standpoint.Furthermore, if the input analog video image is a computer hologram and the function is a window function which indicates a range of a desired video image in a reproduced image which results from Fourier-transforming the computer hologram, the noise in the range of the desired video image in the reproduced video image can be reduced to provide an excellent reproduced image.

公开(公告)号：US5157399A

公开(公告)日：1992-10-20

申请号：US744115

申请日：1991-08-15

申请人： Seiji Kobayashi ,  Demetri Psaltis

发明人： Seiji Kobayashi ,  Demetri Psaltis

IPC分类号： G06F15/18 ,  G06G7/60 ,  G06N3/04 ,  G06N99/00 ,  H03M1/08 ,  H03M1/12 ,  H03M1/36 ,  H03M1/42

CPC分类号： H03M1/42

摘要： A neural network quantizer for quantizing input analog signals includes a plurality of multi-level neurons. The input analog signals are sampled and supplied to respective ones of the multi-level neurons. Output values of the multi-level neurons are converted into analog values, weighted by weighting coefficients determined in accordance with a frequency band of at least one frequency component of the input analog signals and fed back to the respective one of the multi-level neurons and to the other multi-level neurons. The weighted analog values fed back are compared with the respective ones of the sampled input analog signals. The output values of the multi-level neurons are corrected in response to the compared results, and when the compared results are converged within a predetermined range, the output values of the multi-level neurons are produced to quantize the input analog signals.

公开(公告)号：US5111445A

公开(公告)日：1992-05-05

申请号：US438576

申请日：1989-11-17

申请人： Demetri Psaltis ,  Alan Yamamura ,  Seiji Kobayashi

发明人： Demetri Psaltis ,  Alan Yamamura ,  Seiji Kobayashi

IPC分类号： G03H1/16 ,  G03H1/22 ,  G11B7/00 ,  G11B7/0065 ,  G11B7/13

CPC分类号： G11B7/131 ,  G11B7/0065

摘要： An optical system for reading a plurality of radially contiguous individual holograms previously recorded on a rotatable disk along at least one of the disk tracks, each hologram being representative of a predetermined data pattern, and each being recorded as a Fourier transform hologram with respect tot the direction (y direction) tangential to the tracks and as a Fresnel hologram with respect to the radial direction (x direction), and wherein the optical system illuminates the disk with a read-out beam which is at least partially reflected by the disk to an array of photosensitive detectors which generates electrical data signals. A latch circuit is included for recovering the value of each data signal when the read-out beam completely illuminates one of the holograms.

摘要翻译： 一种光学系统，用于读取沿着至少一个盘轨迹先前记录在可旋转盘上的多个径向相邻的单独全息图，每个全息图表示预定数据图案，并且每个全息图相对于 方向（y方向），并且相对于径向方向（x方向）为菲涅尔全息图，并且其中光学系统用至少部分地由盘反射的读出光束照射盘， 产生电数据信号的光敏检测器阵列。 包括一个锁存电路，用于在读出光束完全照亮其中一个全息图时恢复每个数据信号的值。

公开(公告)号：US20110063623A1

公开(公告)日：2011-03-17

申请号：US12823201

申请日：2010-06-25

申请人： Xiquan Cui ,  Xin Heng ,  Changhuei Yang ,  Axel Scherer ,  Demetri Psaltis

发明人： Xiquan Cui ,  Xin Heng ,  Changhuei Yang ,  Axel Scherer ,  Demetri Psaltis

IPC分类号： G01B9/02

CPC分类号： G02B21/0056 ,  G01N21/553 ,  G02B21/18 ,  G02B21/361

摘要： A differential interference contrast (DIC) determination device and method utilizes an illumination source, a layer having a pair of two apertures that receive illumination from the illumination source, and a photodetector to receive Young's interference from the illumination passing through the pair of two apertures. In addition, a surface wave assisted optofluidic microscope and method utilize an illumination source, a fluid channel having a layer with at least one aperture as a surface, and a photodetector that receives a signal based on the illumination passing through the aperture. The layer is corrugated (e.g., via fabrication) and parameters of the corrugation optimize the signal received on the photodetector.

摘要翻译： 差分干涉对比度（DIC）确定装置和方法利用照明源，具有一对两个孔的层，其接收来自照明源的照明，以及光电检测器，用于接收来自穿过该对两个孔的照明的杨氏干扰。 此外，表面波辅助光流体显微镜和方法利用照明源，具有至少一个孔的层作为表面的流体通道，以及基于穿过孔的照明而接收信号的光电检测器。 该层是波纹状的（例如通过制造），并且波纹的参数优化了在光电检测器上接收的信号。

公开(公告)号：US20100296094A1

公开(公告)日：2010-11-25

申请号：US12785635

申请日：2010-05-24

申请人： Changhuei Yang ,  Demetri Psaltis

发明人： Changhuei Yang ,  Demetri Psaltis

IPC分类号： G01N21/59

CPC分类号： G01N21/6458 ,  B82Y30/00

摘要： An optofluidic microscope device is disclosed. The device includes a fluid channel having a surface and an object such as a bacterium or virus may flow through the fluid channel. Light transmissive regions of different sizes may be used to image the object.

摘要翻译： 公开了一种光流体显微镜装置。 该装置包括具有表面的流体通道，诸如细菌或病毒的物体可以流过流体通道。 可以使用不同尺寸的透光区域对物体进行成像。

公开(公告)号：US07768654B2

公开(公告)日：2010-08-03

申请号：US11743581

申请日：2007-05-02

申请人： Xiquan Cui ,  Xin Heng ,  Changhuei Yang ,  Axel Scherer ,  Demetri Psaltis

发明人： Xiquan Cui ,  Xin Heng ,  Changhuei Yang ,  Axel Scherer ,  Demetri Psaltis

IPC分类号： G01B9/02

CPC分类号： G02B21/0056 ,  G01N21/553 ,  G02B21/18 ,  G02B21/361

摘要： A differential interference contrast (DIC) determination device and method utilizes an illumination source, a layer having a pair of two apertures that receive illumination from the illumination source, and a photodetector to receive Young's interference from the illumination passing through the pair of two apertures. In addition, a surface plasmon assisted optofluidic microscope and method utilize an illumination source, a fluid channel having a layer with at least one aperture as a surface, and a photodetector that receives a signal based on the illumination passing through the aperture. The layer is corrugated (e.g., via fabrication) and parameters of the corrugation optimize the signal received on the photodetector.

摘要翻译： 差分干涉对比度（DIC）确定装置和方法利用照明源，具有一对两个孔的层，其接收来自照明源的照明，以及光电检测器，用于接收来自穿过该对两个孔的照明的杨氏干扰。 此外，表面等离子体激元辅助光流体显微镜和方法利用照明源，具有至少一个孔的层作为表面的流体通道，以及基于穿过孔的照明而接收信号的光电检测器。 该层是波纹状的（例如通过制造），并且波纹的参数优化了在光电检测器上接收的信号。

公开(公告)号：US07542639B2

公开(公告)日：2009-06-02

申请号：US11092392

申请日：2005-03-29

申请人： Christophe Moser ,  Karsten Buse ,  Demetri Psaltis

发明人： Christophe Moser ,  Karsten Buse ,  Demetri Psaltis

IPC分类号： G02B6/34 ,  G02B5/32 ,  G03H1/28

CPC分类号： G02B6/34 ,  H01S3/094003

摘要： In the present invention, a volume holographic optical element is used as a pump coupler. The holographic coupler allows at least one pump wavelength to be coupled into the laser medium. The direction of the pump beam onto the coupler is not co-linear with the direction of the signal beam out of the coupler. The invention further provides the coupling of more than one pump wavelengths using a single holographic coupler element while maintaining the high isolation between pump and signal beam. The invention further provides a narrow-band reflection grating of various efficiencies for the signal beam (as part of the laser cavity).

摘要翻译： 在本发明中，使用体积全息光学元件作为泵耦合器。 全息耦合器允许至少一个泵波长耦合到激光介质中。 泵浦光束到耦合器上的方向与信号光束离开耦合器的方向不是共线的。 本发明还提供了使用单个全息耦合器元件的多于一个的泵浦波长的耦合，同时保持了泵浦和信号波束之间的高隔离度。 本发明还提供了用于信号光束（作为激光腔的一部分）的各种效率的窄带反射光栅。

公开(公告)号：US20080245430A1

公开(公告)日：2008-10-09

申请号：US12020504

申请日：2008-01-25

申请人： James Adleman ,  David A. Boyd ,  David G. Goodwin ,  Demetri Psaltis

发明人： James Adleman ,  David A. Boyd ,  David G. Goodwin ,  Demetri Psaltis

IPC分类号： F15C1/04

CPC分类号： F04B19/006 ,  B01L3/50273 ,  B01L2400/0454 ,  Y10T137/0318 ,  Y10T137/2191 ,  Y10T137/2196

摘要： A method of microfluidic control via localized heating includes providing a microchannel structure with a base region that is partially filled with a volume of liquid being separated from a gas by a liquid-gas interface region. The base region includes one or more physical structures. The method further includes supplying energy input to a portion of the one or more physical structures within the volume of liquid in a vicinity of the liquid-gas interface region to cause localized heating of the portion of the one or more physical structures. The method also includes transferring heat from the portion of the one or more physical structures to surrounding liquid in the vicinity of the liquid-gas interface region and generating an interphase mass transport at the liquid-gas interface region or across a gas bubble while the volume of liquid and the gas remain to be substantially at ambient temperature.

摘要翻译： 通过局部加热的微流控制的方法包括提供微通道结构，其具有部分填充有通过液 - 气界面区域与气体分离的体积的液体的基区。 基区包括一个或多个物理结构。 该方法还包括向液 - 液界面区域附近的液体体积内的一个或多个物理结构的一部分提供能量输入，以引起该一个或多个物理结构的该部分的局部加热。 该方法还包括将热量从一个或多个物理结构的部分转移到液 - 气界面区附近的周围液体，并在液 - 气界面区域或气泡周围产生相间质量传输，同时体积 的液体，气体基本保持在环境温度。

公开(公告)号：US07136206B2

公开(公告)日：2006-11-14

申请号：US11004319

申请日：2004-12-03

申请人： Demetri Psaltis ,  Christophe Moser ,  Greg Steckman ,  Karsten Buse ,  Ingo Nee ,  Joerg Hukriede

发明人： Demetri Psaltis ,  Christophe Moser ,  Greg Steckman ,  Karsten Buse ,  Ingo Nee ,  Joerg Hukriede

IPC分类号： G03H1/02

CPC分类号： G02B6/2931 ,  G02B6/29311 ,  G02B6/29316 ,  G02B6/29395 ,  G03H2260/54

摘要： The present invention provides a multi-channel tunable filter and methods for making such a filter. In one embodiment, the filter comprises a bank of gratings imprinted into a filter material, such as Lithium Niobate. In another embodiment, the filter comprises a bank of gratings imprinted on a thin-film filter. An optical read-head comprising a pair of lenses is configured to pass light from within an optical fiber carrying multiple wavelengths through an appropriate grating to extract or drop a specific wavelength. To ensure continuous data transmission, the filter is tuned to a wavelength by configuring the read-head to move in a hitless manner. In one embodiment, the gratings are recorded by the interference of two beams. A first plane wave reflects off a first mirror stack and a second plane wave reflects off a second mirror stack. In another embodiment, the gratings are recorded by a phase masking method.

公开(公告)号：US06862121B2

公开(公告)日：2005-03-01

申请号：US10163039

申请日：2002-06-05

申请人： Demetri Psaltis ,  Gregory J. Steckman ,  Zhiwen Liu ,  Theodore W. Haensch ,  John Hong ,  Martin Centurion

发明人： Demetri Psaltis ,  Gregory J. Steckman ,  Zhiwen Liu ,  Theodore W. Haensch ,  John Hong ,  Martin Centurion

IPC分类号： G03H1/04 ,  G03H1/26 ,  G03H1/12

CPC分类号： G03H1/26 ,  G03H1/04 ,  G03H1/2645 ,  G03H1/265 ,  G03H2001/0436 ,  G03H2001/0445 ,  G03H2001/2655 ,  G03H2210/62 ,  G03H2222/33 ,  G03H2226/11 ,  G03H2260/54

摘要： Holographic methods for recording fast movies whose speed is limited by the laser pulse duration if the recording material has sufficient sensitivity to reliably record a frame of the fast event with a single pulse. The method we describe uses the selectivity of multiplexed holograms to resolve frames that are recorded with adjacent pulses. Specially designed pulse generators are used to generate the signal and reference pulse trains. We experimentally demonstrate the system by making movies of laser induced shock waves with a temporal resolution of 5.9 ns, limited by the pulse width of the Q-switched Nd:YAG laser used in the experiments.

摘要翻译： 如果记录材料具有足够的灵敏度，用速度受到激光脉冲持续时间限制的快速动画的全息方法可靠地以单个脉冲记录快速事件的帧。 我们描述的方法使用复用全息图的选择性来解析用相邻脉冲记录的帧。 专门设计的脉冲发生器用于产生信号和参考脉冲串。 我们用激光诱发的冲击波电影实验证明该系统的时间分辨率为5.9 ns，受实验中使用的Q开关Nd：YAG激光器的脉冲宽度限制。