公开(公告)号：US20230010806A1

公开(公告)日：2023-01-12

申请号：US15732179

申请日：2017-09-27

Applicant: BRUKER NANO, INC.

Inventor： Emad Zawaideh ,  Chris Claypool

IPC: G01N21/21 ,  G01N21/31 ,  G01J3/447 ,  G02B27/28 ,  G02B21/26 ,  G02B21/18

Abstract: A spectroscopic ellipsometry system and method for thin film measurement with high spatial resolution. The system includes a rotating compensator so that spectroscopic ellipsometric and imaging ellipsometric data are collected simultaneously with the same measurement beam. Collecting both ellipsometric data sets simultaneously increases the information content for analysis and affords a substantial increase in measurement performance.

公开(公告)号：US11499870B2

公开(公告)日：2022-11-15

申请号：US16219618

申请日：2018-12-13

Applicant: Mazen Zawaideh ,  Chris Claypool ,  Emad Zawaideh ,  BRUKER NANO, INC.

Inventor： Mazen Zawaideh ,  Chris Claypool ,  Emad Zawaideh

IPC: G01J3/447 ,  H04N13/243 ,  G02B27/09 ,  G02B5/30 ,  G01J3/02 ,  G02B27/28 ,  H04N5/247 ,  G01J4/02

Abstract: An imaging spectropolarimeter for examining targets with polarized light, the spectropolarimeter including a light source adapted to produce polarized light directed at a target. Embodiments also include a three-camera camera system defining a three-camera camera axis with a first camera unit comprising a first analyzer set at 0°, a lens and a first multi-pixel sensor, a second camera unit comprising a second analyzer set at 45°, a lens and a second multi-pixel sensor, and a third camera unit comprising a third analyzer set at 90°, a lens and a third multi-pixel sensor. At least two beam splitters adapted to direct a portion of polarized light reflected from the target to each of the first, second and third camera units. Preferred systems include a processor adapted to produce polarimetric images of the target utilizing intensity information collected by the multi-pixel sensors.

公开(公告)号：US20220268699A1

公开(公告)日：2022-08-25

申请号：US17647364

申请日：2022-01-07

Applicant: Universtiy of Virginia Patent Foundation

Inventor： Brooks Hart Pate

IPC: G01N21/3586 ,  G01N22/00 ,  H01J23/207 ,  G01J1/16 ,  G01J3/30 ,  H01J23/20 ,  G01J3/447

Abstract: A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse-jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

公开(公告)号：US11375894B2

公开(公告)日：2022-07-05

申请号：US16895487

申请日：2020-06-08

Applicant: ZILIA INC.

Inventor： Nicolas Lapointe ,  Dominic Sauvageau

IPC: A61B5/00 ,  A61B3/12 ,  A61B3/00 ,  A61B3/14 ,  G01J3/447 ,  G01J3/28

Abstract: A spectroreflectometric system for performing a spectral analysis on the fundus of a patient's eye or other medium is provided. The system includes an imaging device and a spectral analyser. Illumination light from an illumination light source is projected towards the fundus of the patient's eye. The resulting light from the fundus is separated by a beam splitter into an imaging portion travelling along an imaging light path to reach the imaging device and a spectral analysis portion deviated to a spectral analysis light path. The system further includes a pointer light source optically coupled to the spectral analysis light path. The system is operable in an acquisition mode to concurrently obtain an image of the fundus of the patient's eye and a spectral analysis of an analysis spot on this fundus, and in a pointer mode to obtain a visual representation of the analysis spot within the image.

公开(公告)号：US11215507B2

公开(公告)日：2022-01-04

申请号：US16763424

申请日：2018-10-17

Applicant: KYOTO UNIVERSITY

Inventor： Takeshi Hasegawa ,  Nobutaka Shioya

IPC: G01J3/447 ,  G01N21/27 ,  G01N21/66 ,  G01N21/84

Abstract: A spectral analysis device includes a light source, a support body, a linear polarization filter, a detection unit, a regression computation unit, and an absorbance spectrum calculation unit. The support body is fixed such that an incident angle of the light is a predetermined incident angle θ. The linear polarization filter is configured such that lights with polarization angles ϕn ranging from 0° to 90° are irradiated to the support body. The detection unit detects a transmitted spectrum S from transmitted lights with the polarization angles ϕn. The regression computation unit obtains an in-plane spectrum sip and an out-of-plane spectrum sop through regression analysis by using the transmitted spectrum S and a mixing ratio R. The absorbance spectrum calculation unit calculates an in-plane absorbance spectrum Aip and an out-of-plane absorbance spectrum Aop of the thin film based on the in-plane spectrum and the out-of-plane spectrum.

公开(公告)号：US11193829B2

公开(公告)日：2021-12-07

申请号：US16932834

申请日：2020-07-20

Applicant: Purdue Research Foundation

Inventor： Amr Mohammad E Shaltout ,  Alexander V. Kildishev ,  Vladimir M Shalaev ,  Jingjing Liu

IPC: G01J3/447 ,  G01J3/02 ,  G01N21/19 ,  G02B1/00 ,  G01J3/28

Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.

公开(公告)号：US11169037B2

公开(公告)日：2021-11-09

申请号：US16921107

申请日：2020-07-06

Applicant: CORNING INCORPORATED

Inventor： Ryan Claude Andrews ,  Chai Hsin Kuang ,  Rostislav Vatchev Roussev

IPC: G01B11/16 ,  G01L1/24 ,  G01J3/447 ,  G01N33/38 ,  G01N21/23 ,  G01N21/43

Abstract: The prism-coupling systems and methods include using a prism-coupling system to collect initial TM and TE mode spectra of a chemically strengthened article having a refractive index profile with a near-surface spike region and a deep region. The initial TM and TE mode spectra are examined to see if they fall within a preferred measurement window that can produce an accurate estimate of the knee stress to within a select tolerance. If not, then measurement configuration of the prism-coupling system is changed and new TM and TE mode spectra are collected. This process is repeated until the new TM and TE mode spectra fall within the preferred measurement window. The new TM and TE mode spectra are then used to determine the knee stress. Changing the measurement configuration can include changing at least one of the measurement wavelength, interfacing fluid thickness and interfacing fluid refractive index.

公开(公告)号：US11162841B2

公开(公告)日：2021-11-02

申请号：US16692776

申请日：2019-11-22

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Seunghoon Han ,  Amir Arbabi ,  Andrei Faraon ,  Ehsan Arbabi

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/447 ,  B82Y20/00

Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.

公开(公告)号：US11125621B2

公开(公告)日：2021-09-21

申请号：US16678194

申请日：2019-11-08

Applicant: SETI INSTITUTE

Inventor： William B. Sparks

IPC: G01J3/447 ,  G02B5/30 ,  G01J4/04 ,  G01J3/02

Abstract: Embodiments of a system and a method for polarimetry using static geometric manipulation of the state of polarization are disclosed. According to one embodiment, a spectropolarimeter comprises a retarder having a geometrically changing fast axis. The fast axis changes along a polarimetric dimension. The spectropolarimeter has a polarization analyzer and a spectrographic optical platform. The spectrographic optical platform has a slit in a spatial dimension same as the polarimetric dimension of the retarder; a collimator; a dispersing element for dispersing spectral components of light received from the collimator along a spectral dimension that is perpendicular to the spatial dimension of the slit; a focusing optic; and a two-dimensional detector array. Using a quarter wave retarder full Stokes polarimetry can be provided though a half wave retarder can also be used.

公开(公告)号：US20210190586A1

公开(公告)日：2021-06-24

申请号：US17127464

申请日：2020-12-18

Applicant: CHEMIMAGE CORPORATION

Inventor： Alyssa ZRIMSEK ,  Heather GOMER ,  Shawna TAZIK

IPC: G01J3/02 ,  G01J3/447 ,  G01J3/457

Abstract: Techniques, devices and methods for discriminating a target from a background material without optimizing directly on the target are provided. The devices and methods can generate pass bands of single or multiple wavelengths of variable shape and intensity, and can also select and control the shape of the pass band profiles to improve the detection of targets of interest.