-
公开(公告)号：US5002395A
公开(公告)日：1991-03-26
申请号：US305196
申请日：1989-02-02
Applicant: Manhar L. Shah
Inventor： Manhar L. Shah
IPC: G01R23/17
CPC classification number: G01J3/1256 , G01J3/02 , G01J3/0224 , G01J3/2803 , G01J3/453 , G01J3/457 , G01R23/17
Abstract: An interferometric spectrum analyzer employs a pair of Bragg cells arranged in an optically cascaded configuration such that both the signal beam and the reference beam travel along a common optical path. The beam-modifying properties of the Bragg cells are such that within a prescribed bandwidth of operation, the deflection properties of the respective cells are frequency complementary, namely different frequencies applied to the respective cells deflect the beam passing therethrough along the same optical path, to produce a beat frequency at the Fourier transform plane. In accordance with a first embodiment, complementary deflection action is achieved by using Bragg cells having respectively different acoustic velocites. In a second embodiment, each Bragg cell has the same acoustic velocity. The deflection/frequency complementary effect is obtained by the use of a birefringent material prism interposed between the Bragg cells, which produces angular deviation that depends upon the polarization and the direction of propagation of light passing through the prism.
Abstract translation: 干涉测量频谱分析仪采用布置在光级联配置中的一对布拉格单元，使得信号光束和参考光束沿着公共光路传播。 布拉格单元的波束修正特性使得在规定的操作带宽内，各个单元的偏转特性是频率互补的，即施加到各个单元的不同频率将沿着相同光路偏转的光束偏转到 在傅立叶变换平面产生拍频。 根据第一实施例，通过使用具有不同声速的布拉格电池来实现互补偏转动作。 在第二实施例中，每个布拉格单元具有相同的声速。 偏转/频率互补效应通过使用插入在布拉格单元之间的双折射材料棱镜获得，其产生取决于通过棱镜的光的偏振和传播方向的角度偏差。
-
公开(公告)号：US4964725A
公开(公告)日：1990-10-23
申请号：US339498
申请日：1989-04-17
Applicant: Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
Inventor： Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
CPC classification number: G01J3/457 , G01J2001/4242 , G01J2003/042 , G01J2003/2866 , G01J3/18 , G01N2021/3114 , G01N2021/3137 , G01N2021/3531 , G01N21/3504
Abstract: The correlational gas analyzer comprises a light source passed through the gas under study, which features a quasiperiodic pattern of the specified spectral band, and an optical system with sequentially positioned along the optical path condensor, input slit iris, dispersing means to decomposed the specified spectral band of the gas under study, and rotatably mounted output slit iris configures as a disc with a plurality of slits, uniformly distributed along its circumference and equidistant from the disc center. The spacing between the centers of adjacent slits is approximately equal to the scan length of the specified spectral band of the gas under study. The output slit iris scans the specified spectral band of the gas under study across a photoreceiver, the output signal whereof drives two electric signal amplifiers. One of the amplifiers is designed as a tuned amplifier, with the resonant frequency thereof defined by a preset relation between the disc rotation speed, the number of maxima or minima in the specified spectral band, and the number of slits in the disc.
Abstract translation: 相关气体分析仪包括通过正在研究的气体的光源，其具有特定光谱带的准周期性图案，以及沿着光路聚光器，输入狭缝虹膜，分散装置分解特定光谱的分光装置的光学系统 并且可旋转地安装的输出狭缝虹膜被配置为具有多个狭缝的盘，其沿其圆周均匀分布并且与盘中心等距。 相邻狭缝的中心之间的间距近似等于被研究气体的规定光谱带的扫描长度。 输出狭缝虹膜通过光接收器扫描正在研究的气体的指定光谱带，其输出信号驱动两个电信号放大器。 放大器中的一个被设计为调谐放大器，其谐振频率由盘旋转速度，指定频谱带中的最大值或最小值的数目与盘中的狭缝数量之间的预设关系限定。
-
公开(公告)号：US4963023A
公开(公告)日：1990-10-16
申请号：US339497
申请日：1989-04-17
Applicant: Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
Inventor： Viktor L. Goldovsky , Viktor I. Stetsovich , Andrei J. Zayats
CPC classification number: G01J3/457 , G01J2001/4242 , G01J2003/042 , G01J2003/2866 , G01J3/18 , G01N2021/3114 , G01N2021/3137 , G01N2021/3531 , G01N21/3504
Abstract: A correlational gas analyzer, comprising a light source with the light beam passed through the gas under study with a quasiperiodic pattern of the spectral band, and an optical system with sequentially positioned along the light beam condensor, input slit iris, beam dispering element and rotatably mounted output slit iris configured as a disc with a slit shaped as an Archimedes spiral. The Archimedes spiral center is coincident with the disc center and its pitch is approximately equal to the scan length of the specified spectral band of the gas under study. The output slit iris scans the specified spectral band of the gas under study across a photoreceiver, the outputs whereof drive the inputs of a first and second electric signal amplifier, with the outputs thereof connected to connected in series corrector unit and recorder. The first amplifier is a tuned amplifier with resonant frequency defined by the speed of disc rotation and by the number of maxima or minima in the specified spectral band of the gas under study.
Abstract translation: 一种相关气体分析仪，包括具有光束的光源，通过研究中的气体，具有光谱带的准周期性图案，以及沿着光束聚光器，输入狭缝虹膜，光束分散元件和可旋转地顺序地定位的光学系统 安装的输出狭缝虹膜被配置为具有形状为阿基米德螺旋形的狭缝的盘。 阿基米德螺旋中心与圆盘中心重合，其间距近似等于正在研究的气体的指定光谱带的扫描长度。 输出狭缝虹膜通过光接收器扫描正在研究的气体的指定光谱带，其输出驱动第一和第二电信号放大器的输入，其输出连接到串联校正单元和记录器中。 第一个放大器是一个调谐放大器，其谐振频率由盘旋转的速度和正在研究的气体的指定光谱带中的最大值或最小值的数量定义。
-
104.发明授权Optical instrument for measuring concentrations of polluting gases on long and short geometrical paths 失效用于测量长和短几何路径上污染气体浓度的光学仪器
公开(公告)号：US4060326A
公开(公告)日：1977-11-29
申请号：US592727
申请日：1975-07-03
Applicant: Tiziano Tirabassi , Giorgio Giovanelli , Giulio Cesari , Ubaldo Bonafe , Ottavio Vittori Antisari
Inventor： Tiziano Tirabassi , Giorgio Giovanelli , Giulio Cesari , Ubaldo Bonafe , Ottavio Vittori Antisari
CPC classification number: G01J3/04 , G01J3/0229 , G01J3/427 , G01J3/457 , G01J2003/2866
Abstract: The present invention provides an optical instrument for measuring concentrations of polluting gases on long and short geometric paths. The apparatus comprises a telescope for focussing a ray of light into a spectrometer, a comparison cell containing a known concentration of a polluting gas, control means and an electronic apparatus adapted to determine the concentration of the polluting gas in the analytical sample.
Abstract translation: 本发明提供一种用于测量长和短几何路径上的污染气体浓度的光学仪器。 该装置包括用于将光线聚焦到光谱仪中的望远镜，含有已知浓度的污染气体的比较池，控制装置和适于确定分析样品中污染气体浓度的电子设备。
-
105.发明授权Spectral analysis using a modulating mask transmitting selected spectral lines and reference bands 失效使用调制掩蔽传输选择的光谱线和参考线的光谱分析
公开(公告)号：US3700332A
公开(公告)日：1972-10-24
申请号：US3700332D
申请日：1971-03-05
Applicant: COMSTOCK & WESCOTT
Inventor： DECKER JOHN A JR
CPC classification number: G01J3/457 , G01J2003/2866
Abstract: For detecting specific gases in an automobile exhaust selected lines of the exhaust gas absorption spectrum and reference bands of the spectrum close to the lines are chopped by a mask at the spectral plane so that the light flux from the lines and bands are transmitted at different times. The flux of the lines and bands are also encoded by the chopping mask or a successive encoding mask and applied to a single photodetector which produces a series of electrical values representing the flux of the selected spectral lines.
-
Patent Agency Ranking
公开(公告)号：US11953427B2
公开(公告)日：2024-04-09
申请号：US15227876
申请日：2016-08-03
Applicant: SpectraSensors, Inc.
Inventor： Alfred Feitisch , Xiang Liu , Kevin Ludlum , Mathias Schrempel
IPC: G01N21/27 , G01J3/02 , G01J3/28 , G01J3/42 , G01J3/457 , G01N21/39 , G01N21/21 , G01N21/35 , G01N21/3504 , G01N21/359
CPC classification number: G01N21/274 , G01J3/0297 , G01J3/28 , G01J3/42 , G01J3/457 , G01N21/39 , G01J2003/423 , G01N21/211 , G01N21/35 , G01N21/3504 , G01N21/359 , G01N2021/3595 , G01N2021/399
Abstract: Frequency registration deviations occurring during a scan of a frequency or wavelength range by a spectroscopic analysis system can be corrected using passive and/or active approaches. A passive approach can include determining and applying mathematical conversions to a recorded field spectrum. An active approach can include modifying one or more operating parameters of the spectroscopic analysis system to reduce frequency registration deviation.
-
公开(公告)号：US20230314221A1
公开(公告)日：2023-10-05
申请号：US18022793
申请日：2021-08-27
Inventor： Wei LIN
CPC classification number: G01J3/457 , A61B5/0261 , A61B5/0075
Abstract: DCS analyzer including a memory to store autocorrelation values, model parameters, fitting parameters, and simulated correlation values from a DCS model; a mean square error (MSE) module to compute MSE between theoretical autocorrelation values computed from the model parameters and measured autocorrelation values; a sorting module to sort three latest MSE values obtained from the MSE module and generate indexes of largest, medium, and smallest MSE values; a convergence checking module to determine whether convergence is reached in solving an autocorrelation equation; a search module to calculate αDB and β values at reflection, extension, contraction, and shrink locations; a comparison module to compare two latest MSE values and find new αDB and β values to replace values associated with a largest MSE; a state controller coupled with the memory and the modules to control an operation thereof; and an output buffer to present a fitted solution of the autocorrelation equation.
-
公开(公告)号：US20230160831A1
公开(公告)日：2023-05-25
申请号：US18095282
申请日：2023-01-10
Applicant: SAAM, Inc.
Inventor： John Coates
CPC classification number: G01N21/8507 , G01N21/255 , G01J3/00 , G01J3/0291 , G01J3/42 , G01J3/457 , G01J3/0202 , G01J3/36 , G01J3/0205 , G01J3/0256 , G01N2201/08 , G01N21/359
Abstract: A remote sampling sensor for determining characteristics of a sample includes measurement optics and an insertion probe. The measurement optics are configured to emit light and detect returned light. The insertion probe includes a chamber, the chamber being configured to permit the sample to enter the chamber, an insertion tip at a distal end of the insertion probe, and a retro-reflective optic adjacent the insertion tip. The retro-reflective optic is configured to return the light from the measurement optics through the chamber to the measurement optics. The insertion probe is configured to be remotely located from the measurement optics.
-
公开(公告)号：US11653834B2
公开(公告)日：2023-05-23
申请号：US17462824
申请日：2021-08-31
Inventor： Elizabeth Marjorie Clare Hillman , Sean A. Burgess
CPC classification number: A61B5/0064 , A61B5/0066 , A61B5/0071 , A61B5/0073 , A61B5/0075 , A61B5/444 , A61B5/445 , G01J3/2889 , G01J3/42 , G01J3/457 , G02B23/2476 , G02B26/101 , A61B5/0088 , A61B2562/0238 , A61B2562/0242
Abstract: Optical imaging or spectroscopy described can use laminar optical tomography (LOT), diffuse correlation spectroscopy (DCS), or the like. An incident beam is scanned across a target. An orthogonal or oblique optical response can be obtained, such as concurrently at different distances from the incident beam. The optical response from multiple incident wavelengths can be concurrently obtained by dispersing the response wavelengths in a direction orthogonal to the response distances from the incident beam. Temporal correlation can be measured, from which flow and other parameters can be computed. An optical conduit can enable endoscopic or laparoscopic imaging or spectroscopy of internal target locations. An articulating arm can communicate the light for performing the LOT, DCS, or the like. The imaging can find use for skin cancer diagnosis, such as distinguishing lentigo maligna (LM) from lentigo maligna melanoma (LMM).
-
公开(公告)号：US20190052818A1
公开(公告)日：2019-02-14
申请号：US15672045
申请日：2017-08-08
Applicant: Sensors Unlimited, Inc.
Inventor： Curt Dvonch , Albert P. Allard
CPC classification number: H04N5/272 , G01J3/457 , G06T11/60 , H04N5/2256 , H04N7/183
Abstract: An imaging method includes imaging a scene having a pulsed light source and associating a symbol with the light source. The image is enhanced by inserting a symbol into the image indicative of location of the pulsed light source in the scene. The symbol overlays the image in spatial registration with the location of the pulsed light source in the scene to augment indication of the location provided by the pulsed light source. Imaging systems are also described.
-
-
-
-
-
-
-
-
-
Search Results
199
records
(took 0.014 seconds)
