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51. 发明授权

US10353124B1 Omni-directional ultra-thin reflection optical filters and methods of fabrication 有权
公开(公告)号：US10353124B1
公开(公告)日：2019-07-16
申请号：US15404000
申请日：2017-01-11
申请人： Junpeng Guo
发明人： Junpeng Guo
IPC分类号： G02B5/20 , G02B5/28
摘要： A reflection optical filter has an ultra-thin semi-transparent layer and a thin layer of semiconductor (or dielectric) layer deposited onto a metal film surface at a certain thickness corresponding to a wavelength of light to be filtered from incoming light. Critical coupling of light to the optical cavity formed by the semi-transparent layer and semiconductor (or dielectric) layer on metal surface results in near perfect absorption of the light at one wavelength and strong absorption in the wavelength region near the peak absorption wavelength. Incoming lights of other wavelengths are mostly reflected by the device so the spectral content of incident light is changed. By controlling the thickness of the semiconductor (or dielectric) layer and/or other factors, such as the extent to which the semiconductor layer is annealed or changing the type of metal beneath the semiconductor (or dielectric) layer, the peak absorption wavelength of the light absorbed in the device can be precisely controlled. The overall thickness of the semi-transparent layer and semiconductor (or dielectric) layer is less than one order of magnitude of the wavelength to be filtered, which results in omni-directional performance of the optical filter.

52. 发明授权

US10191076B1 Airflow sensing systems and methods 有权
公开(公告)号：US10191076B1
公开(公告)日：2019-01-29
申请号：US14950243
申请日：2015-11-24
申请人： Gang Wang , Felix Ewere
发明人： Gang Wang , Felix Ewere
IPC分类号： G01P5/02 , G01P5/08 , G01H11/08 , G01P5/06 , G01P5/07
摘要： A flow of air induces vibration of a tip of an airflow sensor. A cantilever coupled to the tip vibrates as the tip is displaced, and a piezoelectric element associated with the cantilever generates an electrical signal in response to mechanical stress or strain induced by vibration of the cantilever. A control element that is in communication with the piezoelectric element of the cantilever receives the electrical signal and derives at least one parameter indicative of the flow of air sensed by the sensor. The control element communicates or otherwise transmits an output signal that is indicative of the parameter to an output device to display sensor data to a user as desired.

53. 发明授权

US09978885B1 Thermo-compensated silicon photo-multiplier with on-chip thermistor 有权
公开(公告)号：US09978885B1
公开(公告)日：2018-05-22
申请号：US15227500
申请日：2016-08-03
申请人： Evgeny N. Kuznetsov
发明人： Evgeny N. Kuznetsov
IPC分类号： G01T1/24 , H01L31/02 , H01L27/146 , G01J1/44
CPC分类号： H01L31/02027 , G01J1/44 , G01J2001/444 , G01J2001/4466 , G01J2001/448 , H01L27/14634 , H01L27/14643
摘要： A silicon photomultiplier (SiPM) device is provided with a SiPM matrix fabricated on a substrate, a bias power supply connected to the SiPM matrix, and a compensation circuit coupled to the bias power supply. The bias power supply provides a bias voltage to the SiPM matrix. The compensation circuit can adjust the bias voltage applied to the SiPM matrix in response to temperature changes at the substrate. The compensation circuit includes a resistor fabricated on the substrate with the SiPM matrix. The resistor can have a resistance that varies in response to temperature changes at the substrate.

54. 发明授权

US09706949B2 Systems and methods for automatically quantifying mobility 有权
公开(公告)号：US09706949B2
公开(公告)日：2017-07-18
申请号：US14192642
申请日：2014-02-27
申请人： Emil Jovanov , Aleksander Milenkovic , Mladen Milosevic
发明人： Emil Jovanov , Aleksander Milenkovic , Mladen Milosevic
IPC分类号： A61B5/103 , A61B5/117 , A61B5/11 , A61B5/00 , G06K9/00 , A61B5/024
CPC分类号： A61B5/1116 , A61B5/0022 , A61B5/024 , A61B5/1117 , A61B5/1118 , A61B5/112 , A61B5/1121 , A61B5/1122 , A61B5/6823 , A61B5/6898 , A61B5/7264 , A61B5/7275 , A61B2503/08 , A61B2562/0219 , G06F19/00 , G06K9/00342 , G06K9/00348 , G16H40/67
摘要： A system and method for automatically quantifying mobility of a person performing a mobility diagnostic procedure. In one exemplary embodiment, the system measures a posture change test procedure with integrated inertial, location, and navigation type sensors found in a mobile computing device worn by a patient during the posture change test procedure, such as a timed-up-and-go (TUG) procedure. The measurements captured during the posture change inform a health care provider about the mobility of a patient. For example, a determination about the likelihood of the patient experiencing a fall can be assessed from measurable parameters produced from the inertial, location, and navigation-type sensors.

55. 发明授权

US09367677B1 Systems and methods for user authentication using eye movement and pupil size change matching 有权
标题翻译：使用眼睛运动和瞳孔尺寸变化匹配的用户认证的系统和方法
公开(公告)号：US09367677B1
公开(公告)日：2016-06-14
申请号：US14498785
申请日：2014-09-26
申请人： Reza Adhami , Ali Alhaj Darwish
发明人： Reza Adhami , Ali Alhaj Darwish
IPC分类号： G06F21/32
CPC分类号： G06F21/32 , G06K9/00087 , G06K9/00604 , G06K9/00892
摘要： A system for eye movement and pupil size change matching for user authentication includes an ocular sensor that is configured to sense eyes of a user and collect data indicative of the user's eye movement and pupil size changes. When a user's eyes are detected, the logic analyzes data collected by the ocular sensor in order to determine whether the sensed data match data extracted from a template defined by the eye movement and pupil size changes of an authorized user. If so, the user is authenticated and is permitted to access at least one restricted resource. As an example, the user may be permitted to access an application or sensitive data stored on a computer system or to access a restricted area, such as a room of a building.
摘要翻译：用于眼睛运动和用于认证的瞳孔尺寸变化匹配的系统包括被配置为感测用户的眼睛并收集指示用户的眼睛运动和瞳孔大小变化的数据的眼睛传感器。当检测到用户的眼睛时，逻辑分析由眼睛传感器收集的数据，以便确定感测到的数据是否匹配从由眼睛移动所定义的模板和授权用户的瞳孔大小变化提取的数据。如果是这样，用户被认证并被允许访问至少一个受限资源。作为示例，可以允许用户访问存储在计算机系统上的应用或敏感数据或访问诸如建筑物的房间的限制区域。

56. 发明授权

US08817271B1 Fiber optic directional sensor and method 有权
标题翻译：光纤定向传感器和方法
公开(公告)号：US08817271B1
公开(公告)日：2014-08-26
申请号：US13362996
申请日：2012-01-31
申请人： Joseph M. Geary
发明人： Joseph M. Geary
IPC分类号： G01B11/24
CPC分类号： G01S3/783 , G01S3/781
摘要： A fiber optic directional sensor has a substantially hemispherical dome surface and a substantially flat surface. The sensor is formed from a plurality of optical fibers fused to one another, and each optical fiber extends from the dome surface to the flat surface. One end of each optical fiber is substantially perpendicular to the sensor's dome surface, and the opposite end of the fiber is substantially perpendicular to the sensor's flat surface such that an end face of the fiber is substantially tangent to the dome surface, and another end face of the fiber is substantially tangent to the flat surface. Using the sensor, light from projectiles, such as missiles, bullets, and other weaponry, can be detected, and the locations of the projectiles can be determined.
摘要翻译：光纤定向传感器具有基本上半球状的圆顶表面和基本平坦的表面。传感器由彼此熔合的多个光纤形成，并且每个光纤从圆顶表面延伸到平坦表面。每个光纤的一端基本上垂直于传感器的圆顶表面，并且光纤的相对端基本上垂直于传感器的平坦表面，使得光纤的端面基本上与圆顶表面相切，而另一个端面的纤维基本上与平坦表面相切。使用传感器，可以检测出射弹，如导弹，子弹和其他武器的光线，并确定射弹的位置。

57. 发明授权

US08706178B2 Method and device for determining oxygen saturation of hemoglobin, for determining hematocrit of blood, and/or for detecting macular degeneration 失效
标题翻译：用于确定血红蛋白的氧饱和度，用于确定血液的血细胞比容和/或用于检测黄斑变性的方法和装置
公开(公告)号：US08706178B2
公开(公告)日：2014-04-22
申请号：US11913372
申请日：2006-05-02
申请人： Kurt R. Denninghoff , Sharon Hillman
发明人： Kurt R. Denninghoff , Lloyd W. Hillman
IPC分类号： A61B5/1455
CPC分类号： G01N33/4925 , G01N2021/3144 , G01N2021/3148
摘要： A method and device for accurately determining oxygen saturation of hemoglobin by the measurement of the optical density of a sample, such as a blood vessel, in response to illumination by light having at least three wavelengths (λ1, λ2, λ3, . . . ) within a range of about 460 nm to about 523 nm. The hematocrit of a sample may be determined from optical density measurements at the three or more wavelengths in conjunction with a known path length. The device may be an intravenous or intra-arterial fiber optic catheter used to deliver the interrogating light signal to the blood and to detect the reflected signal. A method and device of determining the thickness of the retinal well using spectroscopic information are also disclosed.
摘要翻译：通过对具有至少三个波长（λ1，λ2，λ3等）的光的照射来测量样品（例如血管）的光密度来准确地确定血红蛋白的氧饱和度的方法和装置。在约460nm至约523nm的范围内。样品的血细胞比容可以通过结合已知的路径长度在三个或更多个波长处的光密度测量来确定。该装置可以是用于将询问光信号传递到血液并检测反射信号的静脉内或动脉内纤维导管。还公开了使用光谱信息确定视网膜的厚度的方法和装置。

58. 发明授权

US5465311A Side illuminated multimode waveguide 失效
标题翻译：侧面照明多模波导
公开(公告)号：US5465311A
公开(公告)日：1995-11-07
申请号：US179209
申请日：1994-01-10
申请人： H. John Caulfield , Qiang Huang , Andrei Putilin , Valentin Morozov
发明人： H. John Caulfield , Qiang Huang , Andrei Putilin , Valentin Morozov
IPC分类号： G02B6/34 , G02B6/43
CPC分类号： G02B6/43 , G02B6/34 , G03H1/0408
摘要： A multimode waveguide having a small thickness has light coupled to the side of the waveguide in order to provide a multimode operation of the waveguide for providing a continuous pattern of totally internally reflected light which is utilized to reconstruct holographic images from a holographic emulsion placed on a surface of the waveguide. This waveguide structure for reconstructuring a hologram has the capability of providing highly efficient hologram reconstruction while using ordinary light sources and is able to use beam diameters greater than the thickness of the waveguide.
摘要翻译：具有小厚度的多模波导具有耦合到波导侧的光，以便提供波导的多模操作，以提供全内反射光的连续图案，其被用于从放置在所述波导上的全息乳状液重建全息图像波导表面。用于重建全息图的波导结构具有在使用普通光源时提供高效全息图重建的能力，并且能够使用大于波导厚度的光束直径。

59. 发明授权

US12042819B1 Systems and methods for forming uniform monolayers of nanoparticles 有权
公开(公告)号：US12042819B1
公开(公告)日：2024-07-23
申请号：US18328194
申请日：2023-06-02
申请人： Board of Trustees of the University of Alabama, for and on behalf of the University of Alabama in Huntsville
发明人： Jeffrey J. Weimer , Jimmie L. Mitchell
IPC分类号： B05D7/24 , B05D1/20 , C09D5/22 , C09K11/08
CPC分类号： B05D1/204 , B05D7/24 , C09D5/22 , C09K11/08
摘要： The present disclosure is directed to methods for preparing nanoparticle monolayers on a sub-phase by controlling the spreading rate of the nanoparticles. The nanoparticles are first prepared in a nanoparticle solution at a predetermined concentration with a solvent. The sub-phase solution is prepared to have a density and viscosity compatible with the desired spreading rate. Additives, such as glycerol, are used to alter the density of the sub-phase solution. A volume of nanoparticle solution is deposited on the surface of the sub-phase solution and allowed to spread in a controlled manner on the unconstrained surface, forming a uniform nanoparticle monolayer. A substrate is then placed in contact with the nanoparticle monolayer to form a uniform nanoparticle coating on the surface of the substrate.

60. 发明授权

US11733364B2 Target ranging with subsampled noise correlation 有权
公开(公告)号：US11733364B2
公开(公告)日：2023-08-22
申请号：US17327403
申请日：2021-05-21
申请人： KRATOS SRE, Inc. , The University of Alabama in Huntsville
发明人： Seth D. Cohen , Aubrey Beal
IPC分类号： G01S13/10 , H03K3/037 , G01S7/282 , H03K5/01 , H03K5/00
CPC分类号： G01S13/106 , G01S7/282 , H03K3/037 , H03K5/01 , H03K2005/00078
摘要： Backend components for noise radar and techniques for operation of those components are provided. Some embodiments include noise radar apparatuses. A noise radar apparatus may include a first unit that generates a random signal or a broadband noise signal using asynchronous logic gates constituting the first unit. The noise radar apparatus also may include a second unit that generates a reference sequence using the generated random signal or the generated broadband noise signal. The second unit comprises at least one tapped delay line formed by second asynchronous logic gates having sampling functionality and storage functionality. The noise radar apparatus may further include a third unit that receives a return signal correlates the return signal and the reference sequence in nearly real-time using third asynchronous logic gates constituting the third unit.

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