公开(公告)号：US09410800B1

公开(公告)日：2016-08-09

申请号：US13196291

申请日：2011-08-02

Applicant: Thierry Oggier ,  Matthias Schweizer ,  Cornelia Prott

Inventor： Thierry Oggier ,  Matthias Schweizer ,  Cornelia Prott

IPC: G01B11/25 ,  G01B9/02

CPC classification number: G01B11/25 ,  G01B9/0201 ,  G01S7/4814 ,  G01S17/89

Abstract: A method and system for reducing multi-path effects (stray light and multiple reflections) in 3D time of flight cameras by partly masking the camera's illumination elements.

Abstract translation: 通过部分掩蔽照相机的照明元件，减少飞行时间相机3D时间的多路径效应（杂散光和多重反射）的方法和系统。

公开(公告)号：US20150323303A1

公开(公告)日：2015-11-12

申请号：US14704159

申请日：2015-05-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takeshi Kondoh

IPC: G01B9/02

CPC classification number: A61B6/5205 ,  A61B6/484 ,  G01B9/0201 ,  G01B9/02083 ,  G01N23/20075 ,  G01N2223/401

Abstract: A calculation apparatus that integrates a differential phase image and obtains a phase image includes a weighting unit and an integration unit. The weighting unit performs weighting of a differential phase image that has a plurality of differential phase values, each of the differential phase values being obtained by using intensity information of a plurality of pixels included in one intensity distribution formed by a differential interferometer, and obtains a weighted differential phase image. The integration unit integrates the weighted differential phase image and obtains a phase image. The weighting unit performs weighting of the differential phase values in accordance with a position in the differential phase image, such that at least a part of differential phase values in end parts of the differential phase image is weighted more lightly than a differential phase value in a central part of the differential phase image.

Abstract translation: 积分差分相位图像并获得相位图像的计算装置包括加权单元和积分单元。 加权单元对具有多个差分相位值的差分相位图像进行加权，通过使用包括在由差分干涉仪形成的一个强度分布中的多个像素的强度信息获得每个差分相位值，并获得 加权差分相位图像。 积分单元将加权差分相位图像进行积分并获得相位图像。 加权单元根据差分相位图像中的位置执行差分相位值的加权，使得差分相位图像的端部中的差分相位值的至少一部分比在 差分相位图像的中心部分。

公开(公告)号：US20150168127A1

公开(公告)日：2015-06-18

申请号：US14566778

申请日：2014-12-11

Applicant: NIDEK CO., LTD.

Inventor： Naoki TAKENO ,  Masaaki HANEBUCHI ,  Yasuhiro FURUUCHI ,  Hajime NAMIKI

IPC: G01B9/02

CPC classification number: G01B9/02091 ,  A61B3/0025 ,  A61B3/102 ,  A61B5/0066 ,  A61B5/7203 ,  G01B9/0201 ,  G01B9/02045 ,  G01B9/02087 ,  G06T2207/10101

Abstract: There is provided an optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.

Abstract translation: 提供了一种光学相干断层摄影装置，其具有：配置成输出OCT信号的OCT光学系统; 以及分析处理单元，被配置为处理所述OCT信号并生成所述样本的运动对比度数据。 所述分析处理单元设置有：第一图像数据生成单元，被配置为处理多个OCT信号以生成表示所述多个OCT信号的相位差信息的第一图像数据;以及第二图像数据生成单元，被配置为处理所述OCT信号以产生 表示OCT信号的幅度信息的第二图像数据。 分析处理单元基于第一图像数据中的相位差信息和第二图像数据中的幅度信息生成运动对比度数据。

公开(公告)号：US20140300902A1

公开(公告)日：2014-10-09

申请号：US14309021

申请日：2014-06-19

Applicant: Bioptigen, Inc.

Inventor： Eric L. Buckland ,  Bradley A. Bower

IPC: G01B9/02 ,  A61B3/10

CPC classification number: A61B3/102 ,  G01B9/0201 ,  G01B9/02078 ,  G01B9/02091

Abstract: Systems for extended depth frequency domain optical coherence tomography are provided including including a detection system configured to sample spectral elements at substantially equal frequency intervals, wherein a spectral width associated with the sampled spectral elements is not greater than one-half of the frequency interval. Related methods are also provided herein.

Abstract translation: 提供了用于扩展深度频域光学相干断层摄影的系统，包括配置成以基本相等的频率间隔采样频谱元素的检测系统，其中与采样的频谱元素相关联的频谱宽度不大于频率间隔的一半。 本文还提供了相关方法。

公开(公告)号：US20130321819A1

公开(公告)日：2013-12-05

申请号：US13906759

申请日：2013-05-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae-guyn Lim ,  Seong-deok Lee ,  Woo-young Jang

IPC: G01B9/02

CPC classification number: G01B9/02083 ,  A61B5/0066 ,  A61B2576/00 ,  G01B9/0201 ,  G01B9/02087 ,  G01B9/02091

Abstract: A method of generating a tomographic includes detecting a coherence signal that is phase-modulated in a first direction with respect to a cross-section of a subject and includes cross-sectional information of the subject as raw data about the subject; generating a reference temporary tomographic image and at least one temporary tomographic image by performing signal processing on the raw data; detecting an artifact are of the reference temporary tomographic image based on a result of comparing the reference temporary tomographic image with the at least one temporary tomographic image and based on artifact statistics regarding whether an artifact exists; and restoring the artifact area.

Abstract translation: 一种生成断层摄影的方法包括检测相对于被检体的横截面在第一方向上进行相位调制的相干信号，并且包括被检体的横截面信息作为关于被检体的原始数据; 通过对原始数据进行信号处理来生成参考临时断层图像和至少一个临时断层图像; 基于将所述参考临时断层图像与所述至少一个临时断层图像进行比较并且基于是否存在伪影的伪像统计的结果，检测伪像是参考临时断层图像; 并恢复神器区域。

公开(公告)号：US08529062B2

公开(公告)日：2013-09-10

申请号：US13686214

申请日：2012-11-27

Applicant: Bioptigen, Inc.

Inventor： Eric L. Buckland ,  Bradley A. Bower

IPC: A61B3/14 ,  A61B3/00 ,  G01B11/02

CPC classification number: A61B3/102 ,  G01B9/0201 ,  G01B9/02078 ,  G01B9/02091

Abstract: Systems for extended depth frequency domain optical coherence tomography are provided including a detection system configured to sample spectral elements at substantially equal frequency intervals, wherein a spectral width associated with the sampled spectral elements is not greater than one-half of the frequency interval. Related methods are also provided herein.

公开(公告)号：US08488124B2

公开(公告)日：2013-07-16

申请号：US13351444

申请日：2012-01-17

Applicant: Grigory Valentinovich Gelikonov ,  Valentin Mikhailovich Gelikonov ,  Pavel Andreevich Shilyagin

Inventor： Grigory Valentinovich Gelikonov ,  Valentin Mikhailovich Gelikonov ,  Pavel Andreevich Shilyagin

IPC: G01J3/45

CPC classification number: G01B9/02044 ,  G01B9/0201 ,  G01B9/0209

Abstract: An optical low-coherence reflectometry with spectral reception for obtaining images without coherent noise caused by self-interference of the radiation scattered from the studied object and by spurious reflections in the optical path of the system is disclosed. Two or more consecutive measurements of the interference spectrum are made. During at least one measurement of the interference spectrum by means of the interference control unit the phase between the interfering parts of the radiation is modulated by a certain law during exposure, which results in averaging and zeroing of the cross-correlation (useful) component of the registered spectrum, and during at least one additional measurement of the interference spectrum, the phase between the interfering parts of the radiation is not modulated during exposure. The phase between the interfering parts of the radiation may be set to be different in additional measurements of the interference spectrum.

Abstract translation: 公开了具有频谱接收的光学低相干反射测量，用于获得没有由研究对象散射的辐射的自干扰引起的相干噪声的图像，以及系统的光路中的寄生反射。 进行两个或多个连续的干涉光谱测量。 在通过干扰控制单元对干扰谱的至少一次测量期间，辐射的干扰部分之间的相位在曝光期间被某个定律调制，这导致了互相关（有用的）分量的平均和归零 注册的光谱，并且在干扰光谱的至少一个附加测量期间，辐射的干扰部分之间的相位在曝光期间不被调制。 辐射的干扰部分之间的相位可以被设置为在附加的干涉光谱测量中是不同的。

公开(公告)号：US08004692B2

公开(公告)日：2011-08-23

申请号：US11768265

申请日：2007-06-26

Applicant: Chian Chiu Li

Inventor： Chian Chiu Li

IPC: G01B9/02

CPC classification number: G01N21/45 ,  G01B9/0201 ,  G01B9/02049 ,  G01B2290/35 ,  G01B2290/45 ,  G01J3/4532

Abstract: Disclosed are compact optical interferometer array, miniature optical interferometer array, and miniature optical interferometer. The interferometer arrays contain a spatial phase modulator array and a detector array. They are used for conducting multiple measurements. The miniature interferometer has only one component—a spatial phase modulator. Without passing through any focus lens, beam portions coming out of the modulator spread and merge together by themselves. Size of the miniature interferometer can reach subwavelength or even nanoscale. The interferometer array and miniature interferometer find applications in miniature spectrometer, color filter, display, adjustable subwavelength grating, etc.

Abstract translation: 公开了紧凑型光学干涉仪阵列，微型光学干涉仪阵列和微型光学干涉仪。 干涉仪阵列包含空间相位调制器阵列和检测器阵列。 它们用于进行多次测量。 微型干涉仪只有一个组件 - 空间相位调制器。 不通过任何聚焦透镜，从调制器出来的光束部分自身扩散并合并在一起。 微型干涉仪的尺寸可达到亚波长甚至纳米级。 干涉仪阵列和微型干涉仪可用于微型光谱仪，滤色片，显示屏，可调式亚波长光栅等。

公开(公告)号：US20110096291A1

公开(公告)日：2011-04-28

申请号：US12887891

申请日：2010-09-22

Applicant: Eric L. Buckland ,  Joseph A. Izatt ,  Bradley A. Bower ,  Robert H. Hart

Inventor： Eric L. Buckland ,  Joseph A. Izatt ,  Bradley A. Bower ,  Robert H. Hart

IPC: A61B3/14 ,  G01B9/02

CPC classification number: A61B3/102 ,  G01B9/0201 ,  G01B9/02078 ,  G01B9/02091

Abstract: Systems for extended depth frequency domain optical coherence tomography are provided including a detection system configured to sample spectral elements at substantially equal frequency intervals, wherein a spectral width associated with the sampled spectral elements is not greater than one-half of the frequency interval. Related methods are also provided herein.

Abstract translation: 提供了用于扩展深度频域光学相干断层摄影的系统，其包括被配置为以基本相等的频率间隔对频谱元素进行采样的检测系统，其中与采样的频谱元素相关联的频谱宽度不大于频率间隔的一半。 本文还提供了相关方法。

公开(公告)号：US07929146B2

公开(公告)日：2011-04-19

申请号：US12775782

申请日：2010-05-07

Applicant: Joseph A. Izatt ,  Eric L. Buckland ,  David J. Hamo

Inventor： Joseph A. Izatt ,  Eric L. Buckland ,  David J. Hamo

IPC: G01B9/02 ,  G01B11/02

CPC classification number: G01B9/0201 ,  A61B5/0059 ,  A61B5/0066 ,  A61B5/7203 ,  A61B5/7257 ,  G01B9/02011 ,  G01B9/02044 ,  G01B9/02078 ,  G01B9/02079 ,  G01B9/02091 ,  G01B2290/70 ,  G01N21/4795

Abstract: Methods, fourier domain optical coherence tomography (FDOCT) interferometers and computer program products are provided for removing undesired artifacts in FDOCT systems using continuous phase modulation. A variable phase delay is introduced between a reference arm and a sample arm of an FDOCT interferometer using continuous phase modulation. Two or more spectral interferograms having different phase delay integration times are generated. The spectral interferograms are combined using signal processing to remove the undesired artifacts. Systems and methods for switching between stepped and continuous phase shifting Fourier domain optical coherence tomography (FDOCT) and polarization-sensitive optical coherence tomography (PSOCT) are also provided herein.

Abstract translation: 方法提供了傅立叶变换光学相干断层扫描（FDOCT）干涉仪和计算机程序产品，用于消除使用连续相位调制的FDOCT系统中的不期望的伪影。 在使用连续相位调制的FDOCT干涉仪的参考臂和样品臂之间引入可变相位延迟。 产生具有不同相位延迟积分时间的两个或更多个光谱干涉图。 使用信号处理来组合光谱干涉图以去除不想要的伪像。 本文还提供了阶梯式和连续相移傅立叶域光学相干断层扫描（FDOCT）与偏振光敏光学相干断层扫描（PSOCT）之间切换的系统和方法。