公开(公告)号：US20230228675A1

公开(公告)日：2023-07-20

申请号：US17991721

申请日：2022-11-21

Applicant: EPIR, Inc.

Inventor： Wei Gao ,  Chang Yong ,  Silviu Velicu ,  Sivalingam Sivananthan

IPC: G01N21/25 ,  G01J3/10 ,  G01J3/12 ,  G01N21/35

CPC classification number: G01N21/255 ,  G01J3/108 ,  G01J3/1256 ,  G01N21/35

Abstract: A multiband IR adjunct (MIRA) sensor to spectroscopically determine the content and the concentration of chemical composition of a targeted object, includes a sensor housing, a first front optics in a first optical channel, a second front optics in the first optical channel, an acousto-optic tunable filter (AOTF), a photo detector (PD), a set of back optics in the first optical channel that focuses polarized narrow-band light beams received from the AOTF device onto the PD, the PD converting the polarized narrow-band light beams into an electrical signal, and a data acquisition unit signal-connected to the PD, the data acquisition unit collecting the electrical signals. Multiple optical channels can be provided within the housing to analyze UV/VIS/near infrared (NIR), short-wavelength infrared (SWIR), mid-wavelength infrared (MWIR), and LWIR wavelength ranges respectively.

公开(公告)号：US20180129863A1

公开(公告)日：2018-05-10

申请号：US15794101

申请日：2017-10-26

Applicant: NORTHWESTERN UNIVERSITY

Inventor： Vadim Backman ,  Hariharan Subramanian ,  John E. Chandler ,  Craig White ,  Jeremy D. Rogers ,  Lusik Cherkezyan

IPC: G06K9/00 ,  H04N5/235 ,  H04N5/232 ,  G02B21/36 ,  G02B21/16 ,  G01J3/12 ,  G02B21/06 ,  G01N21/47 ,  G01J3/44 ,  G01J3/28

CPC classification number: G06K9/00127 ,  G01J3/1256 ,  G01J3/2823 ,  G01J3/44 ,  G01N21/47 ,  G01N2021/4709 ,  G02B21/06 ,  G02B21/16 ,  G02B21/365 ,  H04N5/23212 ,  H04N5/2354

Abstract: The present technology provides methods, systems, and apparatuses to achieve high throughput and high speed acquisition of partial wave spectroscopic (PWS) microscopic images. In particular, provided herein are high-throughput, automated partial wave spectroscopy (HT/A-PWS) instruments and systems capable of rapid acquisition of PWS Microscopic images and clinical, diagnostic, and research applications thereof.

公开(公告)号：US20170276848A1

公开(公告)日：2017-09-28

申请号：US15624117

申请日：2017-06-15

Applicant: National Technology & Engineering Solutions of Sandia, LLC

Inventor： Michael B. Sinclair ,  Salvatore Campione ,  David Bruce Berckel ,  Igal Brener ,  Paul J. Resnick

IPC: G02B5/28 ,  G01J3/12 ,  H01S5/10 ,  H01S5/12 ,  G02B5/20 ,  G02B1/00

CPC classification number: G02B5/281 ,  G01J3/1256 ,  G02B1/002 ,  G02B5/201 ,  H01S5/10 ,  H01S5/12

Abstract: Tunable filters can use Fano metasurface designs having extremely narrow transmission bands. The Fano metasurface can comprise dielectric or semiconductor materials and can produce transmission bands with quality factors well in excess of 1000—at least a factor of 50 greater than typical metamaterial-based infrared resonances. Numerical simulations of these metasurfaces show that the spectral position of the passband can be changed by slightly changing the position of a small dielectric perturbation block placed within the near-field of the resonator by using simple electromechanical actuation architectures that allow for such motion. An array of independently tunable narrowband infrared filters can thereby be fabricated that only requires deep-subwavelength motions of perturbing objects in the resonator's near-field.

公开(公告)号：US20170064220A1

公开(公告)日：2017-03-02

申请号：US14834684

申请日：2015-08-25

Applicant: United States Government as represented by the Secretary of the Navy

Inventor： Pamela A. Boss ,  Michael D. Putnam ,  Gregory W. Anderson

IPC: H04N5/33 ,  G03B11/00 ,  H04N5/372 ,  E21B47/00 ,  H04N5/225

CPC classification number: H04N5/332 ,  E21B47/0002 ,  G01J3/1256 ,  G01J3/2823 ,  G01J3/501 ,  G01N21/8507 ,  G03B11/00 ,  G03B37/005 ,  H04N5/2256 ,  H04N5/372 ,  H04N2005/2255

Abstract: An apparatus comprising: a probe configured to be pushed into a subsurface soil environment; a transparent window mounted to a side of the probe; a broad-spectrum light source mounted within the probe and positioned such that when the light source is activated broad-spectrum light exits the window; a tunable optical filter mounted within the probe and positioned so as to receive, as an input, light reflected back through the window from the subsurface soil environment, wherein the filter comprises a plurality of settings at each of which the filter is configured to output light within a given wavelength range to the exclusion of other wavelength light ranges; and an imaging system disposed within the probe and configured to capture an image of the output light from the filter at each of the settings at a given depth of the probe in the subsurface soil environment.

Abstract translation: 一种装置，包括：被配置为被推入地下土壤环境中的探针; 安装在探头一侧的透明窗; 安装在探头内的广谱光源并定位成使得当光源被激活时，广谱光从窗口射出; 安装在探头内的可调谐光学滤光器并且被定位成接收来自地下土壤环境的通过窗口反射的光作为输入，其中滤光器包括多个设置，每个设置滤光器被配置为输出光 在给定波长范围内排除其他波长光范围; 以及成像系统，其设置在所述探针内并且被配置为在所述地下土壤环境中在所述探针的给定深度处的每个设置处捕获来自所述过滤器的输出光的图像。

公开(公告)号：US20160202121A1

公开(公告)日：2016-07-14

申请号：US14916528

申请日：2014-09-03

Applicant: LEICA MICROSYSTEMS CMS GMBH

Inventor： Volker SEYFRIED ,  Vishnu Vardhan KRISHNAMACHARI

IPC: G01J3/12

CPC classification number: G01J3/1256 ,  G02B21/0032 ,  G02B21/0064 ,  G02B21/0076 ,  G02B27/1006 ,  G02F1/116

Abstract: The invention relates to a microscope having an acousto-optic apparatus (13) that, with a mechanical wave that is characterized by a preferably adjustable frequency, removes from a polychromatic and collinear detected light bundle (18) portions of illuminated light, scattered and/or reflected at a sample, having an illuminating light wavelength associated with the frequency. The microscope is notable for the fact that a crystal (30) of the acousto-optic apparatus in which the mechanical wave propagates, and the propagation direction of the mechanical wave, are oriented relative to the detected light bundle incident into the crystal in such a way that the acousto-optic apparatus deflects, with the mechanical wave, both the portion of the detected light bundle having the illuminating wavelength and a first linear polarization direction, and the portion of the detected light bundle having the illuminating wavelength and a second linear polarization direction perpendicular to the first polarization direction, and thereby removes them from the detected light bundle.

Abstract translation: 本发明涉及一种具有声光装置（13）的显微镜，该声光装置（13）利用优选可调频率表征的机械波，从多色和共线检测的光束（18）中去除被照射的光的散射和/ 或在样本处反射，具有与频率相关联的照明光波长。 显微镜是显着的，其中机械波传播的声光装置的晶体（30）和机械波的传播方向相对于入射到晶体中的检测到的光束而定向 声光设备利用机械波偏转检测到的光束的部分具有照明波长和第一线性偏振方向的方式，并且检测到的光束的部分具有照明波长和第二线偏振 垂直于第一偏振方向的方向，从而将它们从检测到的光束中去除。

公开(公告)号：US20160178823A1

公开(公告)日：2016-06-23

申请号：US14578043

申请日：2014-12-19

Applicant: U.S. Army Research Laboratory

Inventor： Neelam Gupta

IPC: G02B5/30

CPC classification number: G02B5/3083 ,  G01J3/1256 ,  G01J3/2823 ,  G01J3/447

Abstract: A system for obtaining spectral images from polarized light comprising a polarization sensitive filter; the polarization sensitive filter being configured to receive light at at least one predetermined polarization orientation; and an achromatic waveplate operatively associated with the polarization sensitive filter; the achromatic waveplate being rotatable; whereby rotation of the achromatic waveplate enables light to enter the polarization sensitive spectral filter at at least two predetermined polarization orientations. A method comprising providing a polarization sensitive filter; the polarization sensitive filter being configured to receive light at at least one predetermined polarization orientation; providing an achromatic waveplate operatively associated with the polarization sensitive filter; the achromatic waveplate being rotatable; whereby rotation of the achromatic waveplate enables light to enter the polarization sensitive spectral filter at the at least two predetermined polarization orientations.

Abstract translation: 一种用于从包括偏振敏感滤光器的偏振光获得光谱图像的系统; 偏振敏感滤光器被配置为以至少一个预定的偏振方向接收光; 以及与偏振敏感滤光器可操作地相关联的消色差波片; 消色差波片可旋转; 由此消色差波片的旋转使得光能够以至少两个预定的极化取向进入偏振敏感光谱滤波器。 一种包括提供偏振敏感滤光器的方法; 偏振敏感滤光器被配置为以至少一个预定的偏振方向接收光; 提供与偏振敏感滤光器可操作地相关联的消色差波片; 消色差波片可旋转; 由此消色差波片的旋转使得光能够在至少两个预定的偏振方向进入偏振敏感光谱滤波器。

公开(公告)号：US20160146667A1

公开(公告)日：2016-05-26

申请号：US14904440

申请日：2014-07-13

Applicant: B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD. (BEN-GURION UNIVERSITY)

Inventor： Yitzhak AUGUST ,  Adrian STERN ,  Dan G. BLUMBERG ,  Stanley R. ROTMAN

IPC: G01J3/433 ,  G01J3/26

CPC classification number: G01J3/433 ,  G01J3/1256 ,  G01J3/26 ,  H03M7/3062

Abstract: A spectroscopic method using either tunable or preset non-tunable thin-layered devices or a combination of both to modulate compressed-sensing-compliant, spectral modulations and to use intensity measurements of each respective spectral modulation to numerically reconstruct an estimated spectral distribution of the spectral signal such that the estimated spectral distribution is characterized by a totality of spectral bands exceeding the number of spectral modulations by about one half an order-of-magnitude or more.

Abstract translation: 使用可调谐或预设的不可调薄层器件或两者的组合的光谱方法来调制压缩感测兼容性，光谱调制并且使用每个相应光谱调制的强度测量来数值地重建光谱的估计光谱分布 信号，使得估计的频谱分布的特征在于频谱带的总数超过频谱调制的数量大约一个数量级或更多的数量级。

公开(公告)号：US20160066775A1

公开(公告)日：2016-03-10

申请号：US14933666

申请日：2015-11-05

Applicant: Ian W. Hunter ,  Yi Chen

Inventor： Ian W. Hunter ,  Yi Chen

IPC: A61B1/06 ,  G01J3/45 ,  G01J3/28

CPC classification number: A61B1/0638 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/1256 ,  G01J3/2823 ,  G01J3/45 ,  G01J3/453 ,  G01J3/4535

Abstract: Imaging spectrometers can be used to generate hyperspectral images for medical diagnoses, contaminant detection, and food safety inspections, among other applications. An exemplary imaging spectrometer includes an integrated position sensing array that measures the relative positions of the interferometer components based on an interference pattern generated by illuminating the interferometer with a reference beam. Such an imaging spectrometer includes a processor that controls the interferometer component position by actuating a voice coil and several piezo-electric elements to align the components with respect to each other and to provide a desired optical path length mismatch between the interferometer arms. In some cases, the processor may use feedback and feed forward control, possibly based on the actuators' transfer functions, for more precise positioning. The processor may also implement adaptive and recursive spectral sampling to reduce the image acquisition period.

Abstract translation: 成像光谱仪可用于生成用于医疗诊断，污染物检测和食品安全检查的高光谱图像，以及其他应用。 示例性成像光谱仪包括集成位置检测阵列，其基于通过用参考光束照射干涉仪产生的干涉图案来测量干涉仪部件的相对位置。 这种成像光谱仪包括处理器，其通过致动音圈和若干压电元件来控制干涉仪组件位置，以使组件相对于彼此对准并且提供干涉仪臂之间期望的光程长度失配。 在某些情况下，处理器可以使用反馈和前馈控制，可能基于执行器的传递功能来进行更精确的定位。 处理器还可以实现自适应和递归频谱采样以减少图像采集周期。

公开(公告)号：US20140268131A1

公开(公告)日：2014-09-18

申请号：US14360248

申请日：2012-10-29

Applicant: Sony Corporation

Inventor： Sakuya Tamada

IPC: G01N21/65

CPC classification number: G01N21/65 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/1256 ,  G01J3/44 ,  G01N2021/653 ,  G01N2021/655 ,  G01N2201/067

Abstract: There is provided a measurement apparatus including a light source unit configured to emit pulsed laser light used for pump light and Stokes light that excite predetermined molecular vibration of a measurement sample and for probe light that is intensity-modulated with a predetermined reference frequency and that has a same wavelength as the pump light or the Stokes light, a pulse control unit configured to cause time delay of the probe light generated by the light source unit and then to guide the pump light, the Stokes light, and the time-delayed probe light to the measurement sample, and a detection unit configured to detect transmitted light transmitted through the measurement sample or reflected light from the measurement sample. A relaxation time of the molecular vibration of the measurement sample is measured using time-resolved stimulated Raman gain spectroscopic measurement or time-resolved stimulated Raman loss spectroscopic measurement of the measurement sample.

Abstract translation: 提供了一种测量装置，包括：光源单元，被配置为发射用于泵浦光的脉冲激光;以及斯托克斯光，其激发测量样本的预定分子振动，以及激发预定参考频率强度调制的探测光， 与泵浦光或斯托克斯光相同的波长;脉冲控制单元，被配置为引起由光源单元产生的探测光的时间延迟，然后引导泵浦光，斯托克斯光和时间延迟的探测光 以及检测单元，被配置为检测透射通过测量样本的透射光或来自测量样本的反射光。 使用时间分辨的受激拉曼增益光谱测量或测量样品的时间分辨激发拉曼损耗光谱测量来测量测量样品的分子振动的松弛时间。

公开(公告)号：US08687267B2

公开(公告)日：2014-04-01

申请号：US12391997

申请日：2009-02-24

Applicant: Peiliang Gao

Inventor： Peiliang Gao

IPC: G02F1/33 ,  G02F1/11 ,  G01J3/12 ,  G02F1/125

CPC classification number: G02F1/125 ,  G01J3/1256 ,  G02F1/11 ,  G02F1/116 ,  G02F1/29

Abstract: An acousto-optical tunable filter is disclosed. The filter includes a medium having one or more indices of refractions alterable by the application of acoustic waves to the medium. The filter also includes an acoustic transducer coupled to the medium to generate the acoustic waves Altering the frequency of the acoustic wave selects among the different wavelengths in the incident light ray. The device also includes an optical mirror for reflecting a wave diffracted by the medium back to the medium so that it can again be diffracted. The first diffracted wave has its frequency shifted in one direction by the frequency of the acoustic wave while the second diffracted wave has its frequency shifted in the opposite direction, thereby compensating for the first shift. The result is an output ray with little or no frequency shift.

Abstract translation: 公开了一种声光可调谐滤波器。 过滤器包括具有一个或多个折射指数的介质，所述折射指数可以通过将声波施加到介质而改变。 滤波器还包括耦合到介质以产生声波的声换能器改变在入射光线中的不同波长之间的声波选择的频率。 该装置还包括用于将由介质衍射的波反射回介质的光学镜，使得其可以再次衍射。 第一衍射波在一个方向上以声波的频率偏移，而第二衍射波在相反方向上频移，从而补偿第一偏移。 结果是输出光线很少或没有频移。