公开(公告)号：US06355930B1

公开(公告)日：2002-03-12

申请号：US09237014

申请日：1999-01-25

申请人： Yudaya R. Sivathanu ,  Rony K. Joseph

发明人： Yudaya R. Sivathanu ,  Rony K. Joseph

IPC分类号： G01J502

CPC分类号： G01J3/14 ,  G01J5/601 ,  G01J5/62

摘要： An infrared spectrometer is adapted to capture spectral data at high frequency and includes an aperture defining slit and tuning fork chopper for periodically admitting infrared radiation. A lens and a plurality of mirrors direct the infrared radiation through pair of calcium fluoride prisms that split the infrared radiation into spectral components. The spectral components are directed by an additional mirror and lens to an array of lead selenide pixels that generate a set of data indicative of the spectral component intensities. Data collection circuitry coupled to the pixel array and coupled to the tuning fork chopper collects the set of data at a selectable rate at least once during each opening of the aperture. A serial output on the data collection circuitry provides a list of data values representative of the spectral intensity at each pixel which can be then stored in a mass storage device as well as immediately analyzed based on selected criteria.

摘要翻译： 红外光谱仪适于以高频率捕获光谱数据，并且包括用于周期性地接收红外辐射的限定狭缝和音叉切割器的孔。 透镜和多个反射镜通过将红外辐射分成光谱分量的一对氟化钙棱镜来引导红外辐射。 光谱分量由附加镜和透镜引导到产生一组表示光谱分量强度的数据的硒化铅像素阵列。 耦合到像素阵列并耦合到音叉斩波器的数据采集电路在每个开口期间至少一次以可选择的速率收集数据集。 数据采集​​电路上的串行输出提供表示每个像素处的光谱强度的数​​据值列表，然后可以将其存储在大容量存储设备中，并且基于所选择的标准立即分析。

公开(公告)号：US06184989B2

公开(公告)日：2001-02-06

申请号：US09299438

申请日：1999-04-26

申请人： Yudaya R. Sivathanu ,  Rony K. Joseph

发明人： Yudaya R. Sivathanu ,  Rony K. Joseph

IPC分类号： G01N2159

CPC分类号： G01N21/4795

摘要： Laser sheet tomography is employed to determine flow field statistics in non-steady and steady flow at high repetition rates. The laser sheet tomography system is divided into two independent optical portions, the laser illuminator and the laser imager. As an absorption instrument, the laser illuminator can be shone directly into the laser imager, or if desired, the two portions can be positioned orthogonally to each other with the laser imager observing the scattered light. The observed light is correlated with known variations in laser intensity of the imager to generate transmittance data from which asymmetry ratios and probability density functions of local absorption coefficients can be computed at time repetition rates of 200 Hz and greater.

摘要翻译： 采用激光薄片层析成像技术，以高重复率非稳定流动确定流场统计。 激光片层析成像系统被分为两个独立的光学部分，激光照射器和激光成像器。 作为吸收仪器，激光照射器可以直接照射到激光成像器中，或者如果需要，可以用激光成像器观察散射光，使两个部分彼此正交。 观察到的光与成像器的激光强度的已知变化相关联，以产生透射率数据，从而可以以200Hz及更大的时间重复率计算局部吸收系数的不对称比和概率密度函数。

公开(公告)号：US20160089062A1

公开(公告)日：2016-03-31

申请号：US14503379

申请日：2014-09-30

申请人： Yudaya R. Sivathanu ,  Jongmook Lim

发明人： Yudaya R. Sivathanu ,  Jongmook Lim

IPC分类号： A61B5/1455 ,  A61B5/145 ,  A61B19/00 ,  A61B3/00 ,  A61B3/12 ,  A61B5/1495 ,  A61B3/14 ,  A61B5/00

CPC分类号： A61B5/1455 ,  A61B3/0025 ,  A61B3/1241 ,  A61B3/145 ,  A61B5/14546 ,  A61B5/14555 ,  A61B5/1495 ,  A61B5/6898 ,  A61B5/7278 ,  A61B5/748 ,  A61B90/361 ,  A61B2503/40 ,  A61B2562/0233 ,  A61B2576/02

摘要： A method and a mobile app are disclosed for obtaining hemoglobin count in the blood of a mammal using digital images of the conjunctiva of the eye of the mammal taken with a camera of a mobile device running the mobile app. The mobile app carries out a method including: obtaining a color image of the conjunctiva of the eye using the digital camera; computing an R/B ratio and a Y/I ratio of the color image; normalizing the R/B ratio and the Y/I ratio using color image normalization parameters obtained using a master camera so as to provide a R/B true ratio and a Y/I true ratio; and using the R/B true ratio and the Y/I true ratio as inputs to respective look-up tables created using the master camera so as to provide an accurate measure of blood hemoglobin count.

摘要翻译： 公开了一种方法和移动应用，用于使用运动移动应用的移动设备的相机拍摄的哺乳动物眼睛的结膜的数字图像来获得哺乳动物的血液中的血红蛋白计数。 移动应用程序执行一种方法，包括：使用数字照相机获得眼睛结膜的彩色图像; 计算彩色图像的R / B比和Y / I比; 使用使用主摄像机获得的彩色图像归一化参数来归一化R / B比和Y / I比，以提供R / B真实比率和Y / I真实比率; 并且使用R / B真实比率和Y / I真实比率作为使用主摄像机创建的各个查找表的输入，以便提供血液血红蛋白计数的精确测量。

公开(公告)号：US20100172471A1

公开(公告)日：2010-07-08

申请号：US12561739

申请日：2009-09-17

申请人： Yudaya R. Sivathanu ,  Jongmook Lim ,  Ye Mi

发明人： Yudaya R. Sivathanu ,  Jongmook Lim ,  Ye Mi

IPC分类号： G01N9/24 ,  G01N23/06 ,  G01N23/00

CPC分类号： G01N23/04 ,  G01N9/24 ,  G01N2223/601 ,  G01N2223/638

摘要： Apparatus for detecting variations in gas density within a volume surrounded by a closed metal wall opaque to optical light includes a source of x-rays positioned at a selected location outside the closed metal wall. A detector is positioned outside the closed metal wall at a location suitable to detect x-rays from the source passing entirely through a portion of the volume surrounded by the closed metal wall. The detector has a plurality of sensors arranged in at least one row to capture a dimensionally distributed view of detected x-rays. A processor coupled to an output of the detector analyzes the data which can be displayed in a suitable graphical or pictorial presentation. The closed metal wall can define a housing for a flame, spray or other gaseous distribution. The entirety of the apparatus, excluding the display, can be located with a radiation shield, made of lead or other suitable material to prevent any stray output of x-rays. A dopant can be added to enhance the interaction with the x-rays.

摘要翻译： 用于检测在由光不透明的闭合金属壁包围的体积内的气体密度的变化的装置包括位于封闭金属壁外部的选定位置的x射线源。 检测器位于封闭的金属壁的外侧，适于检测来自源的X射线完全通过由闭合金属壁包围的体积的一部分的位置。 检测器具有布置在至少一行中的多个传感器以捕获检测到的x射线的尺寸分布的视图。 耦合到检测器的输出的处理器分析可以以合适的图形或图示呈现显示的数据。 封闭的金属壁可以限定用于火焰，喷雾或其它气体分布的壳体。 除了显示器之外，整个设备可以放置有由铅或其他合适材料制成的辐射屏蔽物，以防止任何杂散输出的X射线。 可以添加掺杂剂以增强与x射线的相互作用。

公开(公告)号：US08134703B2

公开(公告)日：2012-03-13

申请号：US12717210

申请日：2010-03-04

申请人： Yudaya R. Sivathanu ,  Jongmook Lim

发明人： Yudaya R. Sivathanu ,  Jongmook Lim

IPC分类号： G01N15/02

CPC分类号： G01M99/008

摘要： An apparatus and method for measuring spray angle, spray uniformity, and spray velocity using laser sheet tomography includes measuring the extinction image formed by a spray in two laser sheets spaced apart by a know distance.

摘要翻译： 使用激光片层析成像法测量喷雾角度，喷雾均匀度和喷射速度的装置和方法包括测量通过间隔开已知距离的两个激光片中的喷雾形成的消光图像。

公开(公告)号：US20190283904A1

公开(公告)日：2019-09-19

申请号：US16358691

申请日：2019-03-19

申请人： Yudaya R. Sivathanu ,  Jongmook Lim

发明人： Yudaya R. Sivathanu ,  Jongmook Lim

IPC分类号： B64F5/60 ,  B64F5/40 ,  G01N21/25

摘要： A method of determining a maintenance status of an aircraft engine to be tested. The method includes measuring spectral radiation intensities at a plurality of wavelengths and at a plurality of viewing angles from an exhaust plume of an aircraft engine to be tested so as to provide a plurality of measured spectral radiation intensities. Then, converting the plurality of measured spectral radiation intensities to test planar maps of at least one of: temperature, carbon dioxide concentration, and soot volume fractions. Next, comparing each test planar map to a fiducial map so as to provide a normal distance between the test planar map and the fiducial map. Then, the normal distance is compared to at least one threshold so as to determine a maintenance status of the aircraft engine to be tested. The method reduces the cost and time needed for aircraft maintenance, while increasing safety.

公开(公告)号：US20100225912A1

公开(公告)日：2010-09-09

申请号：US12717210

申请日：2010-03-04

申请人： Yudaya R. Sivathanu ,  Jongmook Lim

发明人： Yudaya R. Sivathanu ,  Jongmook Lim

IPC分类号： G01N15/02

CPC分类号： G01M99/008

摘要： An apparatus and method for measuring spray angle, spray uniformity, and spray velocity using laser sheet tomography includes measuring the extinction image formed by a spray in two laser sheets spaced apart by a know distance.

摘要翻译： 使用激光片层析成像法测量喷雾角度，喷雾均匀度和喷射速度的装置和方法包括测量通过间隔开已知距离的两个激光片中的喷雾形成的消光图像。