公开(公告)号：US11313723B2

公开(公告)日：2022-04-26

申请号：US17072178

申请日：2020-10-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-Ho Song

IPC: G01J3/18 ,  G01J3/02 ,  H04N5/335 ,  G01J3/28

Abstract: Provided is a hyperspectral sensor including a spectral angle converting unit configured to convert an angle of incident light differently according to a wavelength, a diffraction unit configured to selectively diffract the incident light according to an incident angle and a wavelength, a focusing optics including at least one lens, and configured to collect diffracted light passing through the diffraction unit, and an image sensor configured to acquire an image passing through the focusing optics and formed on a focal plane, wherein the diffraction unit includes a volume Bragg grating having a periodic refractive index distribution therein.

公开(公告)号：US11313721B2

公开(公告)日：2022-04-26

申请号：US16437325

申请日：2019-06-11

Applicant: Oak Analytics

Inventor： Ruibo Wang ,  Pawel Adam Menzfeld

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/06 ,  G01J3/28 ,  G01J3/36 ,  G01J3/44 ,  G01J3/18

Abstract: A compact spectrometer includes an excitation light source configured to generate excitation light and arranged to illuminate a spot on a sample. A dispersive element includes at least one movable component and spatially separates output light emanating from the sample in response to the excitation light into a plurality of different wavelength bands. A moveable component of the dispersive element causes the plurality of different wavelength bands of the output light to be scanned across a detector. The detector includes at least one light sensor that senses the wavelength bands of the output light and generates an output electrical signal in response to the sensed output light.

公开(公告)号：US20220124263A1

公开(公告)日：2022-04-21

申请号：US17567428

申请日：2022-01-03

Applicant: Urugus S.A.

Inventor： Gerardo Gabriel Richarte ,  Agustina Pose ,  David Vilaseca ,  Pablo Jais ,  Juan Manuel Vuletich

IPC: H04N5/33 ,  G02B5/20 ,  G01J3/28 ,  G01J3/10 ,  G01J3/02 ,  G06T1/00 ,  G01J3/51 ,  G02B27/00

Abstract: Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focus corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

公开(公告)号：US11307097B1

公开(公告)日：2022-04-19

申请号：US17069020

申请日：2020-10-13

Applicant: ABB Schweiz AG

Inventor： Florent M. Prel ,  Frederic J. Grandmont ,  Louis M. Moreau ,  Eric A. Carbonneau ,  Martin C. Larouche

IPC: G01J3/453 ,  G01J3/28 ,  G01J3/45

Abstract: Technologies for a high resolution and wide swath spectrometer are disclosed. In the illustrative embodiment, an inverted image slicer converts a linear field of view into a grid shape, allowing for an interferometer of a Fourier transform spectrometer to operate on a narrow range of field of views, improving the average spectral resolution of the spectrometer.

公开(公告)号：US11307095B2

公开(公告)日：2022-04-19

申请号：US17112393

申请日：2020-12-04

Applicant: CHEMIMAGE CORPORATION

Inventor： Shawna Tazik ,  Alyssa Zrimsek ,  Heather Gomer ,  Jihang Wang ,  Patrick J. Treado

IPC: G01J3/10 ,  G01J3/28

Abstract: Systems for and methods for in situ optimization of tunable light emitting diode sources are disclosed herein. During operation, the systems and methods obtain real-time feedback from an image sensor, and that feedback is used to tune the tunable LEDs. By tuning the tunable LEDs, the best values for the LED spectral output can be selected based on the feedback from the image sensor, and an image with improved contrast is obtained. Alternatively, the amount of time to obtain an image with acceptable contrast is reduced.

公开(公告)号：US11300448B2

公开(公告)日：2022-04-12

申请号：US17130295

申请日：2020-12-22

Applicant: Pendar Technologies, LLC

Inventor： Daryoosh Vakhshoori ,  Romain Blanchard ,  Peili Chen ,  Masud Azimi ,  Tobias Mansuripur ,  Kalyani Krishnamurthy ,  Arran M. Bibby ,  Fred R. Huettig, III ,  Gokhan Ulu ,  Greg Vander Rhodes

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/28 ,  G01J3/06 ,  H01S3/00 ,  G01K11/3213 ,  H01S3/094 ,  H01S3/108 ,  H01S3/30 ,  G01K11/324

Abstract: A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.

公开(公告)号：US20220107418A1

公开(公告)日：2022-04-07

申请号：US17553562

申请日：2021-12-16

Applicant: Cilag GmbH International

Inventor： Joshua D. Talbert ,  Donald M. Wichern

IPC: G01S17/89 ,  G01S7/483 ,  G01J3/28

Abstract: Hyperspectral, fluorescence, and laser mapping imaging with reduced fixed pattern noise is disclosed. A method includes actuating an emitter to emit a plurality of pulses of electromagnetic radiation and sensing reflected electromagnetic radiation resulting from the plurality of pulses of electromagnetic radiation with a pixel array of an image sensor. The method includes reducing fixed pattern noise in an exposure frame by subtracting a reference frame from the exposure frame. The method is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of: electromagnetic radiation having a wavelength from about 513 nm to about 545 nm, from about 565 nm to about 585 nm, from about 900 nm to about 1000 nm, an excitation wavelength of electromagnetic radiation that causes a reagent to fluoresce, or a laser mapping pattern.

公开(公告)号：US20220107220A1

公开(公告)日：2022-04-07

申请号：US17217465

申请日：2021-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon Jae KIM ,  Sang Kyu Kim ,  Hyun Seok Moon ,  Jin Young Park ,  Sung Mo Ahn ,  Kun Sun Eom ,  Myoung Hoon Jung

IPC: G01J3/28 ,  G01N33/483 ,  G01J3/02

Abstract: The present disclosure relates to an apparatus for non-invasively estimating a target component value based on a light spectrum. The apparatus for estimating the target component value may include a sensor configured to obtain a spectrum of light scattered or reflected from an object, and a processor configured to correct a first reflectance value of the spectrum based on a melanin index; obtain a second reflectance value based on correcting the first reflectance value; convert the second reflectance value into an absorbance value; estimate the target component value based on the absorbance value; and correct the target component value based on a hemoglobin index.

公开(公告)号：US20220101277A1

公开(公告)日：2022-03-31

申请号：US17033512

申请日：2020-09-25

Applicant: X Development LLC

Inventor： Diosdado Rey Banatao ,  Karen R. Davis ,  Neil Treat ,  Artem Goncharuk ,  Charles Spirakis ,  Sujit Sanjeev ,  Gearoid Murphy ,  Lance Co Ting Keh ,  Rebecca Radkoff ,  Taoran Dai

IPC: G06Q10/00 ,  G06T7/00 ,  G06F16/21 ,  G06N20/00 ,  G01J3/28

Abstract: Systems and methods for managing chemical recycling processes include accessing characterization data of a feedstock, the characterization data comprising one or more spectra collected according to one or more spectroscopic methods. The methods include predicting, using the characterization data, a set of constituent materials included in the feedstock. The methods include predicting a material composition of the feedstock using the predicted set of constituent materials. The methods include identifying, at least in part using the predicted material composition of the feedstock, one or more target products. The methods include generating a set of chemical reaction schemas enabling a conversion of at least part of the feedstock into the one or more target products. The methods also include storing identifications of the material composition of the feedstock, the one or more target products, and the set of chemical reaction schemas in a data store.

公开(公告)号：US20220099491A1

公开(公告)日：2022-03-31

申请号：US17210913

申请日：2021-03-24

Applicant: Nanohmics, Inc.

Inventor： Mark E. Lucente ,  Chris W. Mann

IPC: G01J3/28 ,  G01J3/02

Abstract: Methods use a tunable notch filter for constructing a spectral map of electromagnetic radiation in a selected spectral band that is incident on a notch filter for a plurality of time periods. Electromagnetic radiation is passed by an electronically tuned notch filter to a detector array for the plurality of selected time periods, and the detector response is determined. For at least a first selected time period the notch filter is tuned to selectively attenuate the passing of one or more selected sub-bands of electromagnetic radiation in the selected spectral band. Information about the selectively attenuated radiation is determined and used along with information about the radiation passed to the detector array for each time period to construct a spectral map. Electronically tunable notch filters may be made with metamaterials such as patterned graphene.