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    • 63. 发明申请
    • ADAPTIVE OPTICS FOR IMAGING THROUGH HIGHLY SCATTERING MEDIA IN OIL RESERVOIR APPLICATIONS
    • 通过油藏储存应用中高分辨率介质成像的自适应光学
    • WO2016141339A9
    • 2016-10-13
    • PCT/US2016021004
    • 2016-03-04
    • ARAMCO SERVICES COSAUDI ARABIAN OIL COUNIV BOSTON
    • BIFANO THOMASEICHMANN SHANNON LEEGOLDBERG BENNELT BKANJ MAZENPAUDEL HARI PSHAIN WILLIAM
    • G02B27/00G01N21/64G02B21/00
    • G02B21/0028G01N21/6458G01N2201/0675G02B21/002G02B21/0032G02B21/0048G02B21/0076G02B21/008G02B21/02G02B21/367G02B27/0068
    • Embodiments of the invention provide an imaging system and method using adaptive optics and optimization algorithms for imaging through highly scattering media in oil reservoir applications and lab-based petroleum research. Two-/multi-photon fluorescence microscopy is used in conjunction with adaptive optics for enhanced imaging and detection capabilities in scattering reservoir media. Advanced fluorescence techniques are used to allow for super-penetration imaging to compensate for aberrations both in and out of the field of interest, extending the depth at which pore geometry can be imaged within a rock matrix beyond the current capability of confocal microscopy. The placement of a Deformable Mirror or Spatial Light Modulator for this application, in which scattering and index mismatch are dominant aberrations, is in an optical plane that is conjugate to the pupil plane of the objective lens in the imaging system. The invention images stationary and dynamic nanoparticles, surfactants, fluid-fluid interfaces and tracers which can be used to study properties such as diffusion, mobility, adhesion, stickiness and wettability within the 3D structure of cores and thin sections.
    • 本发明的实施例提供了一种使用自适应光学和优化算法的成像系统和方法,用于通过油藏应用中的高散射介质和基于实验室的石油研究进行成像。 双光子/多光子荧光显微镜与自适应光学结合使用,用于在散射储层介质中增强成像和检测能力。 先进的荧光技术被用于允许超级穿透成像补偿在感兴趣的领域内外的像差,从而延伸孔几何可以在岩石基质内成像超过目前的共聚焦显微镜能力的深度。 在该应用中,散射和折射率失配是主要像差的可变形镜或空间光调制器的放置在与成像系统中的物镜的光瞳平面共轭的光学平面中。 本发明将稳定和动态的纳米颗粒,表面活性剂,流体 - 流体界面和示踪剂图像化,可用于研究核心和薄部分的3D结构内的扩散,迁移率,粘附性,粘性和润湿性等性质。
    • 66. 发明申请
    • AN OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (O-OFDM) SYSTEM WITH PULSE-WIDTH MODULATION (PWM) DIMMING
    • 具有脉宽调制(PWM)调光的光学正交频分多路复用(O-OFDM)系统
    • WO2015047497A3
    • 2015-05-21
    • PCT/US2014043820
    • 2014-06-24
    • UNIV BOSTON
    • ELGALA HANYLITTLE THOMAS
    • H04J11/00H04B10/116H04J14/00
    • H04B10/116H04L25/4902H04L27/2627H04L27/2697
    • An optical orthogonal frequency division multiplexing (O-OFDM) system with pulse-width modulation (PWM) dimming includes a driver responsive to one or more predetermined dimming set points configured to generate PWM signals having a predetermined duty cycle and configured to supply current to one or more light emitting diodes (LEDs). An O-OFDM generator responsive to the one or more predetermined dimming set points and digital data is configured to generate digital inverted O-OFDM signals during on-states of the PWM signals and non-inverted O-OFDM signals during off-states of the PWM signals according to the predetermined duty cycle and convert the digital inverted O-OFDM signals and the digital non-inverted O-OFDM signals to analog output O-OFDM signals. A combiner circuit responsive to the current from the driver and the analog output O-OFDM signals is configured such that the analog output O-OFDM signals modulate the current to the one or more LEDs to provide a high capacity visible light communication link.
    • 具有脉宽调制(PWM)调光的光学正交频分多路复用(O-OFDM)系统包括响应于一个或多个预定调光设定点的驱动器,所述预定调光设定点被配置为产生具有预定占空比的PWM信号并且被配置为向一个 或更多的发光二极管(LED)。 响应于所述一个或多个预定调光设置点和数字数据的O-OFDM发生器被配置为在所述PWM信号和非反相O-OFDM信号的导通状态期间在所述PWM信号和所述非反相O-OFDM信号的导通状态期间生成数字反相O-OFDM信号 PWM信号,并将数字反相O-OFDM信号和数字非反相O-OFDM信号转换成模拟输出O-OFDM信号。 响应来自驱动器的电流和模拟输出O-OFDM信号的组合器电路被配置为使得模拟输出O-OFDM信号调制到一个或多个LED的电流以提供高容量可见光通信链路。