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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 US10788310B2
Methods and apparatus for phase stabilized swept-source optical coherence tomography (SS-OCT) including rescaling and dynamic range enhancement
Publication/Patent Number: US10788310B2 Publication Date: 2020-09-29 Application Number: 15/440,713 Filing Date: 2017-02-23 Inventor: Wang, Zhenguo   Kim, Jongsik   Liu, Jonathan   Chan, Kinpui   Assignee: Kabushiki Kaisha TOPCON   IPC: G01B9/02 Abstract: An optical coherence tomography (OCT) system electrically mixes a signature signal with an OCT signal (e.g., an interferogram) output by a photodetector of the OCT system. The signature signal may be a signal output by a photodetector that detects an optical signal from a fiber Bragg grating. The signature signal may then be time delayed before combination with the OCT signal. A series of interferograms are then aligned according to the signature signal. A rescaling signal may be similarly electrically mixed with the signature and OCT signals.
2 US10627212B2
Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration
Publication/Patent Number: US10627212B2 Publication Date: 2020-04-21 Application Number: 15/490,286 Filing Date: 2017-04-18 Inventor: Liu, Jonathan J.   Wang, Zhenguo   Kim, Jongsik   Chan, Kinpui   Assignee: KABUSHIKI KAISHA TOPCON   IPC: G01B9/02 Abstract: A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.
3 US2020208958A1
AUTOMATIC CALIBRATION OPTICAL INTERFEROMETER AND AUTOMATIC CALIBRATION METHOD OF OPTICAL INTERFEROMETER
Publication/Patent Number: US2020208958A1 Publication Date: 2020-07-02 Application Number: 16/379,721 Filing Date: 2019-04-09 Inventor: Chiang, Hung Chih   Chang, Cheng Yi   Chang, Ting Wei   Chang, Chi Shen   Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE   IPC: G01B9/02 Abstract: An automatic calibration optical interferometer comprises: a light source; an optical interference assembly, which divides a low coherent light into a first and a second incident light; an optical sampling assembly, with a first end receiving the first incident light and a partially reflective window at the second end being configured to divide the first incident light into a first reflected light and a first penetrating light configured to be emitted to the test sample; an optical reference assembly, with a reference mirror and an actuator, wherein the optical sampling assembly emits the second incident light to the reference mirror to generate a second reflected light, and the actuator moves the reference mirror; a polychromator, which outputs a displacement signal according to an optical path difference variation between the first and second reflected lights; and a displacement controller, which controls the actuator according to the displacement signal.
4 CN111351426A
一种具有波长实时修正和稳定功能的半导体激光干涉仪
Under Examination
Publication/Patent Number: CN111351426A Publication Date: 2020-06-30 Application Number: 202010172854.3 Filing Date: 2020-03-13 Inventor: 蔡引娣   冯保凯   谢波   凌四营   范光照   Assignee: 大连理工大学   IPC: G01B9/02 Abstract: 本发明属于精密测量领域,具体涉及一套具有激光波长实时修正和稳定功能的半导体激光干涉仪,包括:干涉仪模块部分、波长实时修正部分、波长实时稳定部分。干涉仪模块部分可以测量移动角锥棱镜的位移值;波长实时修正部分可以通过实时测量和修正半导体激光器的波长来提高干涉仪模块部分的测量精度;波长实时稳定部分可以通过实时稳定半导体激光器的波长来提高干涉仪模块部分的稳定性。该半导体激光干涉仪结构简单,所需光学元器件少,装置整体体积较小,易集成在纳米定位平台上进行位移在线测量。
5 CN210513009U
一种长波红外多普勒差分干涉仪系统支撑结构
Valid
Publication/Patent Number: CN210513009U Publication Date: 2020-05-12 Application Number: 201921149311.9 Filing Date: 2019-07-19 Inventor: 郝雄波   孙剑   张兆会   秦阳帆   韩斌   闫鹏   冯玉涛   Assignee: 中国科学院西安光学精密机械研究所   IPC: G01B9/02 Abstract: 本实用新型提供一种长波红外多普勒差分干涉仪系统支撑结构,解决了长波红外多普勒差分干涉仪整机在温度变化过程中的微热应力、低热变形等问题。该支撑结构镜组内各镜片采用轴向弹性压紧固定,同时通过弹簧柱塞对扩视场棱镜轴向弹性压紧固定以及对扩视场棱镜径向压紧固定,有效减小温度变化对干涉仪光学元件的影响,保证长波红外多普勒差分干涉仪相位反演精度和测风精度。
6 CN111536868A
一种压缩超快的成像型任意反射面速度干涉仪
Under Examination
Publication/Patent Number: CN111536868A Publication Date: 2020-08-14 Application Number: 202010263257.1 Filing Date: 2020-04-07 Inventor: 金诚挚   齐大龙   何一林   杨承帅   曹烽燕   姚云华   杨岩   张诗按   孙真荣   Assignee: 华东师范大学   IPC: G01B9/02 Abstract: 本发明公开了一种压缩超快的成像型任意反射面速度干涉仪,本发明由光源与目标靶系统、标准具干涉系统、压缩超快成像系统、时序控制系统及数据处理系统构成;本发明采用压缩超快成像系统替代传统成像型任意反射面速度干涉仪中的成像装置,在成像过程中引入压缩超快成像技术(Compressed Ultrafast Photography,CUP),通过CUP‑VISAR二维超快动态像成像,通过单次测量可以重构出多帧图像,即二维空间和一维时间的三维成像,还原二维干涉条纹图像完整的动态过程,有效地获取冲击波时空演化信息,本发明对成像型任意反射面速度干涉仪的成像性能有维度上的提升,达到以前不能达到的目标。
7 EP2836787B1
MULTI-SPEED OCT SWEPT SOURCE WITH OPTIMIZED K-CLOCK
Publication/Patent Number: EP2836787B1 Publication Date: 2020-10-28 Application Number: 13716715.1 Filing Date: 2013-04-08 Inventor: Johnson, Bartley C.   Goldberg, Brian   Flanders, Dale C.   Assignee: Axsun Technologies, Inc.   IPC: G01B9/02
8 CN108489380B
一种用于干涉仪的姿态调节装置
Valid
Publication/Patent Number: CN108489380B Publication Date: 2020-10-20 Application Number: 201810263616.6 Filing Date: 2018-03-28 Inventor: 黄斌   田伟   隋永新   杨怀江   Assignee: 长春国科精密光学技术有限公司   IPC: G01B9/02 Abstract: 本发明公开了一种干涉仪的姿态调节装置,包括外框和内框,内框与外框经第一铰接件铰接连接以实现内框在空间的转动,内框上设有与其固连的驱动输入件,外框设有与驱动输入件配合的调节组件,驱动输入件在调节组件的带动下、带动内框以第一铰接件为固定转动点实现空间转动。应用该装置,内框与姿态待调节设备连接,内框与外框经第一铰接件铰接,第一铰接件作为一个固定旋转点,内框连接有驱动输入件,在外框上设有与驱动输入件配合的调节组件,通过调节组件将力传递至驱动输入件,驱动输入件以第一铰接件为固定转动点转动,进而带动内框实现在空间内的转动,以实现与内框连接的姿态待调节设备与干涉仪光轴之间的倾斜角度的调整。
9 CN111699358A
用于光学相干断层扫描成像仪的数字转换器
Public
Publication/Patent Number: CN111699358A Publication Date: 2020-09-22 Application Number: 201880087659.1 Filing Date: 2018-01-26 Inventor: D·埃比歇尔   P-f·迈斯特   T·布拉塞尔   Assignee: 爱科瑞思股份有限公司   IPC: G01B9/02 Abstract: 一种用于扫频源光学相干断层扫描(SS‑OCT)成像系统的数字转换器和处理器设备,包括:输入端,其被配置成接收OCT信号;控制输入端,其被配置成接收k时钟信号;组合器单元(130),其接收OCT信号和k时钟信号,被配置成输出复合信号;数字化单元(60),其被布置成将复合信号转换成数字复合信号(69);数据处理单元(70),其被布置成基于数字复合信号(69)来确定生成OCT信号的样本中的光密度的轮廓。
10 US10533837B2
Multichannel optical receivers
Publication/Patent Number: US10533837B2 Publication Date: 2020-01-14 Application Number: 15/535,712 Filing Date: 2015-12-14 Inventor: Frisken, Steven James   Assignee: CYLITE PTY LTD   IPC: G01B9/02 Abstract: Methods and apparatus are presented for multichannel optical coherence tomography. Light from a wavelength tuneable or steppable optical source is separated into one or more sample beams and one or more reference beams, and the one or more sample beams directed onto a sample to form one or more interaction regions. A plurality of returning probe beams are collected and mixed with the one or more reference beams to form an interference pattern comprising a plurality of interferograms having at least two distinct carrier frequencies. The multichannel optical apparatus can be provided with polarisation discrimination by mixing the returning probe beams with two orthogonally polarised reference beams to form one or more interference patterns each comprising a plurality of interferograms having at least two distinct carrier frequencies. In preferred embodiments each interferogram has a distinct carrier frequency, which may be provided by ensuring that each returning probe beam has a distinct propagation angle with respect to a reference beam. Also presented is a means of generating a plurality of beamlets from a sample beam using a nonreciprocal optical splitter configured to split a beam propagating in a forwards direction into a plurality of beamlets, and to transmit without splitting a beam propagating in the reverse direction.
11 US2020103217A1
VIBRATION SENSING SYSTEM WITH WAVELENGTH ENCODING
Publication/Patent Number: US2020103217A1 Publication Date: 2020-04-02 Application Number: 16/471,922 Filing Date: 2017-11-21 Inventor: Zalevsky, Zeev   Garcia, Javier   Assignee: CONTINUSE BIOMETRICS LTD.   IPC: G01B9/02 Abstract: A system for use in inspection of a sample is described, the system comprises: an illumination unit configured to provide coherent illumination comprising a plurality of at least two wavelengths and direct said coherent illumination onto an inspection region of a sample; and a collection unit comprising at least one detector array and configured for collecting light returning from said inspection region and generate data indicative of speckle patterns in said plurality of at least two wavelengths at a predetermined sampling rate, wherein said illumination unit is configured for directing light components of said at least two wavelengths toward corresponding two or more segments of said inspection region, and wherein said data indicative of speckle patterns corresponding with said two or more segments.
12 US2020249008A1
METHODS AND DEVICES FOR ADDING POLARIZATION SENSING FUNCTION TO STANDARD LOW COHERENCE INTERFEROMETRY
Publication/Patent Number: US2020249008A1 Publication Date: 2020-08-06 Application Number: 16/782,437 Filing Date: 2020-02-05 Inventor: Chen, Zhongping   Moon, Sucbei   Miao, Yusi   Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA   IPC: G01B9/02 Abstract: The present invention describes a scheme of reconfiguring an ordinary OCT system to a PS-OCT variant. In this scheme, a polarization mode-dependent optical delay (PMOD) unit is inserted at the sample arm of the OCT interferometer. As a consequence of its large retardation, the resulted OCT image contains a plurality of image replicas separated by the group delay difference of the polarization modes. The polarization-sensitive interference can be analyzed by the amplitude ratios between the replicated images. Because of the simplicity of this method, an ordinary OCT system can be easily and cost-effectively reconfigured to add a useful PS-OCT imaging function. This method can be applied to any low coherence interferometric technique such as spectral-domain OCT, time-domain OCT, and spectral-encoded microscopy.
13 EP3414516B1
SYSTEMS AND METHODS FOR IMPROVED OCT MEASUREMENTS
Publication/Patent Number: EP3414516B1 Publication Date: 2020-04-01 Application Number: 17705577.9 Filing Date: 2017-02-10 Inventor: Everett, Matthew J.   Schmoll, Tilman   Shemonski, Nathan   Tumlinson, Alexandre R.   Assignee: Carl Zeiss Meditec, Inc.   Carl Zeiss Meditec AG   IPC: G01B9/02
14 US2020318944A1
AUTOMATED POLARIZATION CONTROL
Publication/Patent Number: US2020318944A1 Publication Date: 2020-10-08 Application Number: 16/823,164 Filing Date: 2020-03-18 Inventor: Elmaanaoui, Badr   Pias, Matthew Scott   Mabboux, Pierre-yves   Assignee: Canon U.S.A., Inc.   IPC: G01B9/02 Abstract: One or more devices, systems, methods and storage mediums for optical imaging medical devices, such as, but not limited to, Optical Coherence Tomography (OCT), single mode OCT, and/or multi-modal OCT apparatuses and systems, and methods and storage mediums for use with same, for performing automated polarization control, polarization diversity and/or balanced detection are provided herein. One or more embodiments may achieve polarization diversity and balanced detection (or photo-detection) under any imaging circumstances. One or more embodiments, may achieve polarization control functionality regardless of whether such control is automatic or manual. Additionally, one or more embodiments may achieve automated polarization control, may achieve balanced detection (or photo-detection), and/or may address potential disturbances, such as, but not limited to, polarization drift over time, temperature and/or mechanical perturbations or variations. One or more embodiments may include an optical receiver where polarization diversity and balanced detection may be optimized via motorized controls.
15 CN210664327U
一种干涉仪标准镜系统
Valid
Publication/Patent Number: CN210664327U Publication Date: 2020-06-02 Application Number: 201922162073.1 Filing Date: 2019-12-06 Inventor: 吴文龙   彭永民   Assignee: 苏州沛斯仁光电科技有限公司   IPC: G01B9/02 Abstract: 本实用新型公开了一种干涉仪标准镜系统,包括矩形的底座、固定装置和干涉单元;所述光源固定座和屏固定座位于相邻的两条边的中心处,所述旋转座位于底座的中心位置处,所述移动座位于与屏固定座相对的边的中心处,所述固定装置分别设置在旋转座、移动座和底座上;所述光源固定在光源固定座上,所述干涉屏固定在屏固定座上,所述标准镜包括分光镜和全反镜,所述分光镜设置在旋转座上的固定装置上,所述分光镜与底座的边呈45°,两个所述全反镜分别设置在底座的两条边处的固定装置上,两个所述全反镜的镜面分别平行于其所在的边。其能够快速的安装和调节标准镜,并获得干涉条纹,调节方便准确。
16 CN110966916A
一种气浴装置及光刻机
Under Examination
Publication/Patent Number: CN110966916A Publication Date: 2020-04-07 Application Number: 201811158115.8 Filing Date: 2018-09-30 Inventor: 李先明   Assignee: 上海微电子装备(集团)股份有限公司   IPC: G01B9/02 Abstract: 本发明公开了一种气浴装置及光刻机,属于光刻机技术领域。该气浴装置包括进风口、处理腔和出风口,所述出风口包括第一通道组和第二通道组,所述第一通道组和所述第二通道组朝靠近干涉仪方向依次设置,其中,所述第一通道组的气浴方向与水平面的夹角V大于所述第二通道组的气浴方向与水平面的夹角W。光刻机包括上述气浴装置。本发明通过设置气浴方向不同的第一通道组和第二通道组,实现对干涉仪中的测量光路和参考光路进行吹扫,使得干涉仪的参考光路也处于气浴温控区,保证了干涉仪测量结果的精确性。
17 CN111442715A
基于一体式二次分光组件的外差激光干涉仪
Under Examination
Publication/Patent Number: CN111442715A Publication Date: 2020-07-24 Application Number: 202010134345.1 Filing Date: 2020-03-02 Inventor: 胡鹏程   苏晓博   付海金   Assignee: 哈尔滨工业大学   IPC: G01B9/02 Abstract: 基于一体式二次分光组件的外差激光干涉仪属于激光应用技术领域;本发明将两束频率不同的空间分离光束输入至基于一体式二次分光组件的外差激光干涉仪,其中一体式二次分光组件包含两个彼此空间垂直的分光面,这两个分光面镀有偏振分光膜或非偏振分光膜,并且测量光束和参考光束在一体式二次分光组件中的行进路径长度相等。本发明所述的外差激光干涉仪显著降低了周期非线性误差,相对于其他现有空间分离式外差激光干涉仪同时兼具结构简单、热稳定性好、容差角大和易于集成装配的优点,满足了高端装备对外差激光干涉测量高精度和高分辨率的要求。
18 CN211121048U
一种激光干涉仪的快速调平装置
Valid
Publication/Patent Number: CN211121048U Publication Date: 2020-07-28 Application Number: 201922135441.3 Filing Date: 2019-12-03 Inventor: 李巍   左维   郭泽   裴佳桐   Assignee: 天津中德应用技术大学   IPC: G01B9/02 Abstract: 本实用新型公开了一种激光干涉仪的快速调平装置,包括水平分布的装置底盘;装置底盘的底面安装有锁紧机构;锁紧机构,用于连接激光干涉仪的三角支架顶部;装置底盘的顶面前后两端,分别具有横向分布的直线导轨;直线导轨上的滑块与编码器底座的底面固定连接;编码器底座的顶面固定设置有编码器;编码器的顶部中心位置,安装有垂直分布的旋转支柱;旋转支柱顶部,与旋转平台底部设置的旋转槽滑动配合;旋转平台的顶部固定设置有干涉仪底座;干涉仪底座的顶部,固定连接激光干涉仪的主体部分。本实用新型,能够简单、方便地调节激光干涉仪的旋转角度以及左右移动距离,从而有利于对激光干涉仪进行快速调平对光,节约宝贵的时间。
19 CN109029244B
多波长激光干涉仪
Valid
Publication/Patent Number: CN109029244B Publication Date: 2020-08-28 Application Number: 201810749061.6 Filing Date: 2018-07-10 Inventor: 刘世杰   鲁棋   周游   王圣浩   倪开灶   潘靖宇   邵建达   Assignee: 中国科学院上海光学精密机械研究所   IPC: G01B9/02 Abstract: 一种多波长激光干涉仪,该装置包括:激光器、孔径光阑、扩束次镜、针孔光阑、分光棱镜、准直主镜、透射标准镜、压电陶瓷换能器、待测平面元件、反射标准镜、成像透镜、高光谱相机和计算机。本发明装置中的准直主镜为三透镜,成像透镜与扩束次镜参数完全相同且为单透镜;为了减小本发明装置中透镜的加工难度和降低整套系统光路装调的难度,本发明装置中的扩束次镜和准直主镜各有1个面可为平面。本发明能在600nm~1600nm波长范围内,能对待测的平面光学元件的透射波前或反射波前进行测量。
20 CN108444381B
一种用于消除半导体激光器调频干涉信号非线性的校正方法
Valid
Title (English): A Correction Method for Eliminating Nonlinear Frequency Modulation Interferometry Signal in Semiconductor Lase
Publication/Patent Number: CN108444381B Publication Date: 2020-02-14 Application Number: 201810459743.3 Filing Date: 2018-05-15 Inventor: 郑刚   高明   刘卫国   陈海滨   张雄星   王伟   郭峰   Assignee: 西安工业大学   IPC: G01B9/02 Abstract: 本发明涉及半导体激光器调频干涉传感及测量技术领域,具体涉及一种关于半导体激光器调频干涉信号非线性的校正方法。一种用于消除半导体激光器调频干涉信号非线性的校正方法,通过构建二阶或二阶以上多项式时域变换关系,对调频连续波激光干涉测量系统的拍频干涉信号,提取几个相邻极值点的时间位置,建立关于调制变换系数的多元线性方程组并求解得到调制变换系数的实际数值,带入所构建的二阶或者二阶以上多项式时域变换关系,对实测拍频信号进行变换,从而实现对半导体激光器调频连续波干涉信号非线性的校正,本方法可用于各种基于半导体激光器的调频连续波干涉测量系统,提高以半导体激光器为发射光源的光学调频连续波干涉测量系统的测量精度。