公开(公告)号：US20240241047A1

公开(公告)日：2024-07-18

申请号：US18288337

申请日：2022-01-18

申请人： NEC Corporation

发明人： John Kenji CLARK ,  Shigeru Nakamura

IPC分类号： G01N21/47 ,  G01N21/17

CPC分类号： G01N21/47 ,  G01N2021/1757 ,  G01N2021/1787 ,  G01N2021/4735

摘要： A measurement method according to an example embodiment executed by a computer includes: selecting one of a plurality of sample wavelengths as a wavelength of output light of a semiconductor wavelength-tunable laser, and controlling output of the output light in such a way that the selected one sample wavelength discretely and sequentially changes with time; acquiring, for each of the plurality of sample wavelengths, an electrical signal obtained by detecting and converting interference light obtained by combining and interfering scattered light obtained by irradiating a sample with measurement light, and reference light for the measurement light and the reference light obtained by splitting the output light; and deriving a scattering profile of the sample by performing compressed sensing on the electrical signal obtained for each of the plurality of sample wavelengths.

公开(公告)号：US20180372647A1

公开(公告)日：2018-12-27

申请号：US16064381

申请日：2016-12-19

申请人： The Regents of the University of California

发明人： Matthew Brenner ,  Andrew Emon Heidari ,  Zhongping Chen ,  Sari Mahon ,  Joseph Jing

IPC分类号： G01N21/87 ,  G01N21/47 ,  G01N21/88 ,  G01B9/02

CPC分类号： G01N21/87 ,  G01B9/02091 ,  G01N21/4795 ,  G01N21/8806 ,  G01N2021/1787 ,  G01N2021/8809 ,  G01N2201/025 ,  G01N2201/06113

摘要： The invention includes an improvement in a method of assessing a gemstone having at least one planar face with an internally reflecting surface including the steps of optically modifying the at least one planar face of the gemstone to return a sample beam from an internally reflecting plane corresponding to the at least one planar face to an optical coherence tomography (OCT) system; selectively directing the sample beam from an optical coherence tomography (OCT) system onto the gemstone; and generating an OCT image map of the gemstone to determine volume, gem carat weight and/or quality.

公开(公告)号：US20180353063A1

公开(公告)日：2018-12-13

申请号：US15535721

申请日：2016-01-07

申请人： CANON KABUSHIKI KAISHA

发明人： Akihito Uji ,  Nagahisa Yoshimura ,  Tomoyuki Makihira ,  Hirofumi Yoshida

IPC分类号： A61B3/10 ,  A61B5/00 ,  A61B3/12 ,  A61B3/14 ,  G01N21/47

CPC分类号： A61B3/102 ,  A61B3/12 ,  A61B3/14 ,  A61B5/0066 ,  A61B5/0073 ,  G01N21/4795 ,  G01N2021/1787

摘要： Provided is an optical tomographic imaging apparatus including: a determination unit for determining whether or not an optical member for changing a field angle has been inserted between a scanning unit and an object to be inspected to change a field angle of an acquiring area of a tomographic image; and a switching unit for switching a value of at least one parameter among a control parameter of a control portion for the optical tomographic imaging apparatus, a signal processing parameter of a calculation processing portion, an image processing parameter, and an analysis processing parameter, based on a determination result from the determination unit. Accordingly, a preferred tomographic image of the object is acquired by switching values of various parameters to suitable values even when the optical member for changing a field angle is inserted to change the field angle of the acquiring area of the tomographic image.

公开(公告)号：US09861319B2

公开(公告)日：2018-01-09

申请号：US15078403

申请日：2016-03-23

申请人： University of Kentucky Research Foundation

发明人： Guoqiang Yu ,  Yu Lin ,  Chong Huang

IPC分类号： A61B5/026 ,  A61B5/00 ,  G06F17/50 ,  G01N21/17

CPC分类号： A61B5/7275 ,  A61B5/0073 ,  A61B5/0075 ,  A61B5/0091 ,  A61B5/0261 ,  A61B5/708 ,  A61B5/7214 ,  A61B5/7282 ,  G01N2021/1787 ,  G06F17/50 ,  G06F19/00

摘要： The present invention provides for three-dimensional reflectance diffuse optical imaging of deep tissue blood flow distribution that removes the need for probe-tissue contact, thereby allowing for such technology to be applied to sensitive, vulnerable, damaged, or reconstructive tissue. The systems utilize noncontact application and detection of near-infrared light through optical lens and detection through a linear array or two-dimensional array of avalanche photodiodes or a two-dimensional array of detectors provided by charge-coupled-device (CCD). Both further feature a finite-element-method (FEM) based facilitation to provide for three-dimensional flow image reconstruction in deep tissues with arbitrary geometries.

公开(公告)号：US20170234675A1

公开(公告)日：2017-08-17

申请号：US15517959

申请日：2015-10-08

申请人： COLLAGE MEDICAL IMAGING LTD.

发明人： Gavriel J. IDDAN ,  Roni ZVULONI

IPC分类号： G01B9/02 ,  A61B10/04 ,  A61B5/00

CPC分类号： G01B9/02069 ,  A61B5/0066 ,  A61B5/7214 ,  A61B5/7257 ,  A61B10/04 ,  A61B2562/0233 ,  G01B9/02004 ,  G01B9/02014 ,  G01B9/02027 ,  G01B9/02044 ,  G01B9/02091 ,  G01B2290/45 ,  G01J3/10 ,  G01J3/36 ,  G01J3/4531 ,  G01N21/39 ,  G01N21/4795 ,  G01N2021/1787 ,  G01N2021/399

摘要： The present application in some embodiments relates to methods for reducing noise and/or clutter when measuring a spectrum, particularly but not only for OCT imaging. In some embodiments a light source is synchronized with a detector. For example a narrow band light source is synchronized with a narrow band detector. For example, the light source may scan over multiple frequency bands and/or the detector may be tuned to a frequency band synergetic to the band of the light source. For example the light source and detector may be tuned to overlapping narrow bands. Optionally the detector has a sensor set for each frequency band. Optionally some sensor sets are individually resettable. For example each set may have a reset circuit. For example, a sensor set for a band not currently being measured is deactivated.

公开(公告)号：US09720220B2

公开(公告)日：2017-08-01

申请号：US15065379

申请日：2016-03-09

申请人： University of Manitoba

发明人： Catherine Rui Jin Findlay ,  Kathleen Margaret Gough

IPC分类号： G02B21/26 ,  G01N21/35 ,  G01N21/17

CPC分类号： G02B21/26 ,  G01N21/35 ,  G01N2021/1787

摘要： A tomography accessory device for supporting a sample relative to the imaging assembly of a microscope has an electric positioning motor supported on the existing sample supporting stage of the microscope. An output shaft of the positioning motor is supported for rotation about an output axis parallel to a plane of the stage and a controller acts to control the motor so as to rotate the output shaft between a plurality of different angular positions about the output axis. An adjustable assembly supports a sample holder relative to the outer shaft such that i) the sample holder is translatable relative to the output shaft along at least one translation axis oriented generally perpendicularly to the output axis, and ii) the sample holder is pivotable relative to the output shaft about at least two pivot axes which are transverse to one another and which are generally perpendicular to the output axis.

公开(公告)号：US20170065163A1

公开(公告)日：2017-03-09

申请号：US15355391

申请日：2016-11-18

申请人： Kabushiki Kaisha TOPCON

发明人： Qi Yang ,  Charles A. Reisman

IPC分类号： A61B3/00 ,  A61B3/10 ,  A61B5/00 ,  G01B9/02 ,  G06K9/46 ,  G06K9/00 ,  G06K9/52 ,  A61B3/12 ,  G06T7/00

CPC分类号： A61B3/0025 ,  A61B3/102 ,  A61B3/1025 ,  A61B3/12 ,  A61B3/1225 ,  A61B5/4842 ,  G01B9/02091 ,  G01N21/4795 ,  G01N21/6456 ,  G01N2021/1787 ,  G01N2021/887 ,  G06K9/00617 ,  G06K9/4604 ,  G06K9/4671 ,  G06K9/52 ,  G06K2009/4666 ,  G06T5/002 ,  G06T7/0012 ,  G06T2207/10101 ,  G06T2207/30041

摘要： Geographic atrophy of the eye can be detected and measured by imaging the eye at a depth greater than the retinal pigment epithelium (RPE) at a plurality of locations of the eye, for example, using optical coherence tomography (OCT); determining a ratio of the intensities of imaging signals of a retinal layer(s) with respect to the intensity of imaging signals of a sub-RPE layer(s) at each location; determining representative values based at least in part on the determined ratios; generating a map of the representative values; and identifying diseased areas from the map. Contours and binary maps may be generated based on the identified diseased areas. The size and shape of the identified areas may be analyzed and monitored over a period of time.

摘要翻译： 可以通过使用光学相干断层扫描（OCT）在眼睛的多个位置处以大于视网膜色素上皮（RPE）的深度成像眼睛来检测和测量眼睛的地理萎缩。 确定视网膜层的成像信号的强度相对于每个位置处的子RPE层的成像信号的强度的比率; 至少部分地基于所确定的比率确定代表值; 生成代表值的图; 并从地图中识别患病区域。 可以基于所识别的患病区域来生成轮廓和二进制图。 可以在一段时间内分析和监测所识别区域的尺寸和形状。

公开(公告)号：US09506740B2

公开(公告)日：2016-11-29

申请号：US13513052

申请日：2010-12-01

申请人： Mark Brezinski ,  Bin Liu ,  Ehsan Azimi

发明人： Mark Brezinski ,  Bin Liu ,  Ehsan Azimi

IPC分类号： G01B11/02 ,  G01B9/02 ,  A61B5/00 ,  G01N21/47 ,  G01N21/17

CPC分类号： G01B9/02091 ,  A61B5/0066 ,  A61B5/7257 ,  G01B9/02044 ,  G01B9/02074 ,  G01N21/4795 ,  G01N2021/1787

摘要： Systems and methods for enhancing spectral domain optical coherence tomography (OCT] are provided. In particular, a system and method for calibration of spectral interference signals using an acquired calibration signal are provided. The calibration signal may be logarithmically amplified to further improve the accuracy of the calibration. From the calibration signal, a series of more accurate calibration data are calculated. An acquired spectral interference signal is calibrated using these calibration data. Moreover, systems that include logarithmic amplification of the spectral interference signal and variable band-pass filtering of the spectral interference signal are provided. Such systems increase the dynamic range and visualization capabilities relative to conventional spectral domain OCT systems.

摘要翻译： 提供了增强频域光学相干断层扫描（OCT）的系统和方法，特别提供了一种使用采集的校准信号校准光谱干扰信号的系统和方法，校准信号可以对数放大，以进一步提高 校准，从校准信号中计算出一系列更准确的校准数据，采用这些校准数据对采集到的光谱干涉信号进行校准，而且包括频谱干扰信号的对数放大和可变带通滤波的系统 提供了光谱干扰信号，相对于常规光谱域OCT系统，这种系统增加了动态范围和可视化能力。

公开(公告)号：US20160103026A1

公开(公告)日：2016-04-14

申请号：US14894709

申请日：2013-06-05

申请人： EV GROUP E. THALLNER GMBH

发明人： Boris POVAZAY ,  Antun PEIC

IPC分类号： G01L1/24 ,  G01L1/25

CPC分类号： G01L1/242 ,  G01L1/24 ,  G01L1/241 ,  G01L1/247 ,  G01L1/25 ,  G01L5/0047 ,  G01L9/0076 ,  G01L11/02 ,  G01N23/046 ,  G01N2021/1787 ,  G01N2223/419 ,  G06F3/0325 ,  G06F3/041 ,  G06F3/042 ,  G06F3/0421 ,  G06F3/0423 ,  G06F3/0428 ,  G06F2203/04109 ,  H01L22/12

摘要： A measuring device for determining a pressure map during application of pressure to at least one measurement layer between a first pressure body and a second pressure body the measuring device comprising: (i) at least one transmitter located on one peripheral edge of the measurement layer for emission of signals in the form of electromagnetic waves along a first signal route which runs through the measurement layer and at least one other signal route which runs through the measurement layer, and (ii) at least one receiver located on the peripheral edge for reception of the signals of the first signal route and other signal route(s), which signals are sent by the transmitter through the measurement layer and can be changed when pressure is applied. Furthermore this invention relates to a corresponding method.

摘要翻译： 一种测量装置，用于在对第一压力体和第二压力体之间的至少一个测量层施加压力时确定压力图，所述测量装置包括：（i）位于所述测量层的一个周边边缘上的至少一个发射器， 沿着穿过测量层的第一信号路径以及穿过测量层的至少一个其它信号路由的电磁波形式的信号的发射，以及（ii）位于外围边缘上的至少一个接收器，用于接收 第一信号路由和其他信号路由的信号，哪些信号由发射机通过测量层发送，并且可以在施加压力时改变。 此外，本发明涉及一种相应的方法。

公开(公告)号：US09074991B2

公开(公告)日：2015-07-07

申请号：US13583129

申请日：2011-04-22

申请人： Koichi Suzuki

发明人： Koichi Suzuki

IPC分类号： A61B8/00 ,  G01N21/00 ,  G01N29/00 ,  G01N21/17 ,  A61B5/00 ,  G01N21/47 ,  A61B8/08 ,  G01N21/49

CPC分类号： G01N21/1702 ,  A61B5/0095 ,  A61B5/4312 ,  A61B8/485 ,  G01N21/4795 ,  G01N21/49 ,  G01N2021/1787 ,  G01N2201/0697

摘要： A measuring apparatus includes: laser sources; and a control unit for outputting an excitation start signal that instructs the laser light sources to start excitation, and outputting an oscillation start signal to instruct the laser light sources to start oscillation after a predetermined time has elapsed from the output of the excitation start signal, so as to generate pulsed light from the laser light sources. The laser sources include a first laser source and a second laser source of which preparation time from the start of the excitation to the generation of the pulsed light is longer than that of the first laser source. The control unit sets timing to output the excitation start signal to the first laser source to follow timing to output the excitation start signal to the second laser source according to a difference of the preparation time between the first and second laser sources.

摘要翻译： 测量装置包括：激光源; 以及控制单元，用于输出指示激光源开始激励的激励开始信号，并且在从激励开始信号的输出经过预定时间之后输出振荡开始信号以指示激光源开始振荡， 从而产生来自激光光源的脉冲光。 激光源包括第一激光源和第二激光源，其中从激发开始到产生脉冲光的准备时间比第一激光源的准备时间长。 控制单元根据第一激光源和第二激光源之间的准备时间的差异，设定定时以将激励开始信号输出到第一激光源，以跟随定时将激励开始信号输出到第二激光源。