公开(公告)号：US12104957B2

公开(公告)日：2024-10-01

申请号：US17620408

申请日：2020-06-25

申请人： Protea Ltd

发明人： Chris Daw ,  Robin Hutchinson

IPC分类号： G01J3/427 ,  G01J3/02 ,  G01J3/10 ,  G01J3/12 ,  G01N21/33 ,  G01N21/3504 ,  G01N33/00 ,  G01N21/31

CPC分类号： G01J3/427 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/12 ,  G01N21/33 ,  G01N21/3504 ,  G01N33/0037 ,  G01N33/0042 ,  G01J2003/102 ,  G01J2003/1213 ,  G01N2021/3155 ,  G01N2201/08

摘要： The invention relates to a photometer (30) for analysing the composition of a sample gas. The photometer comprises an infra-red (IR) source (20) configured to direct a first plurality of pulses (40) of IR radiation through the sample gas to an IR detector (26), at least two of the first plurality of pulses being of different wavelength. The photometer further comprises an ultraviolet (UV) source (32) configured to generate a second plurality of pulses (38) of UV radiation for conveyance to a UV detector (36), at least two of the second plurality of pulses being of different wavelength. A path selection arrangement (22, 42-50) is configured to selectively convey different ones of the second plurality of pulses (38) to one of the sample gas and the UV detector (36). The photometer further comprises processing circuitry coupled to the IR source (20), the UV source (32), the IR detector (26), the UV detector (36) and the path selection arrangement (22, 42-50). The processing circuitry is configured to (i) select the wavelength to be used for a given UV pulse of the second plurality of pulses (38), (ii) receive a plurality of detection signals from each of the IR detector (26) and the UV detector (36) and (iii) based on the detection signals, determine a concentration of at least one component of the sample gas. A method for analysing the composition of a sample gas is also disclosed.

公开(公告)号：US12092522B2

公开(公告)日：2024-09-17

申请号：US18185541

申请日：2023-03-17

申请人： VIAVI Solutions Inc.

发明人： William D. Houck

IPC分类号： G02B5/20 ,  B32B3/30 ,  G01J3/12 ,  G01J3/28 ,  G01J3/51 ,  H04N25/13

CPC分类号： G01J3/513 ,  B32B3/30 ,  G01J3/12 ,  G01J3/2823 ,  G02B5/201 ,  B32B2307/42 ,  G01J2003/1239 ,  G01J2003/2826 ,  H04N25/135

摘要： An optical sensor device, includes an optical sensor that has a set of sensor elements, an optical filter that includes a plurality of regions, and one or more processors. A region, of the plurality of regions, includes a first set of optical channels comprising optical channels that are configured to pass light associated with respective subranges of a first wavelength range, a second set of optical channels comprising optical channels that are configured to pass light associated with respective subranges of a second wavelength range, and a third set of optical channels comprising optical channels that are configured to pass light associated with respective subranges of a third wavelength range. The one or more processors are configured to obtain, from the optical sensor, sensor data associated with a scene and determine image information associated with the scene based on the spectral information.

公开(公告)号：US12055482B2

公开(公告)日：2024-08-06

申请号：US17252184

申请日：2019-06-14

申请人： ams International AG

发明人： Frederic Roger ,  Troy Chesler

IPC分类号： G01N21/33 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28

CPC分类号： G01N21/33 ,  G01J3/26 ,  G01J3/2803 ,  G01J2003/1226

摘要： An integrated sensor module includes a UV radiation source operable to emit UV radiation onto a sample, and a sensor including spectrally sensitive UV channels disposed so as receive UV radiation from the sample. Each of the UV channels includes a respective sensing device and a respective UV interference filter disposed over a UV radiation sensitive portion of the respective sensing device. The respective UV interference filter for each particular one of the channels has transmission characteristics that are spectrally responsive to a spectral signature of a respective chemical substance.

公开(公告)号：US12018984B2

公开(公告)日：2024-06-25

申请号：US17776032

申请日：2020-11-18

申请人： UNIVERSITEIT GENT ,  IMEC VZW

发明人： Fabio Pavanello ,  Dries Van Thourhout ,  Roeland Baets

IPC分类号： G01J3/28 ,  G01J3/02 ,  G01J3/12

CPC分类号： G01J3/0294 ,  G01J3/12 ,  G01J3/28 ,  G01J2003/1213 ,  G01J2003/2879

摘要： A temperature compensation method for wavelength monitoring using spectrometers on photonic integrated chips and a related temperature-compensated wavelength monitoring device include an optical filter of the chip filters a source signal to provide at least one spectral reference line to a first spectrometer to detect thermal wavelength drifts thereof. At least one spectral line to be monitored is received by the same or another spectrometer of the chip to detect wavelength shifts thereof. The detected thermal drift of the reference line is compared to calibrated thermal drifts for the reference line which is associated with a calibrated thermal drift for the spectral response curve of the spectrometer receiving the spectral line to be monitored. A thermal drift rate for the response curve of the optical filter differs from a thermal drift rate for the response curve of the first spectrometer at least by an amount.

公开(公告)号：US11976974B2

公开(公告)日：2024-05-07

申请号：US17663906

申请日：2022-05-18

申请人： SEIKO EPSON CORPORATION

发明人： Tsugio Gomi

IPC分类号： G01J3/28 ,  G01J3/12

CPC分类号： G01J3/2803 ,  G01J3/2823 ,  G01J2003/1213

摘要： A spectroscopic camera includes a spectroscopic element and a light receiver, and a method for correcting the spectroscopic camera includes causing light having a first wave number from a spectroscopic light source to be incident on the spectroscopic element, causing the light receiver to receive light having a second wave number and outputted from the spectroscopic element, generating a matrix representing the spectral characteristics of the light having the second wave number based on the output from the light receiver, and generating a correction matrix based on the inverse matrix of the matrix and storing the correction matrix in a storage section.

公开(公告)号：US11940325B2

公开(公告)日：2024-03-26

申请号：US17870051

申请日：2022-07-21

申请人： The Penn State Research Foundation

发明人： Abdalla R. Nassar ,  Alexander J. Dunbar ,  Edward W. Reutzel

IPC分类号： G01J3/02 ,  B22F10/20 ,  B22F10/25 ,  B22F10/28 ,  B22F12/44 ,  B22F12/45 ,  B22F12/90 ,  B33Y50/02 ,  G01J3/36 ,  G01J3/443 ,  B22F10/30 ,  B22F10/366 ,  B22F10/38 ,  B33Y10/00 ,  G01J3/12

CPC分类号： G01J3/36 ,  B22F10/20 ,  B22F10/25 ,  B22F10/28 ,  B22F12/44 ,  B22F12/45 ,  B22F12/90 ,  B33Y50/02 ,  G01J3/0208 ,  G01J3/443 ,  B22F10/30 ,  B22F10/366 ,  B22F10/38 ,  B33Y10/00 ,  G01J2003/1213

摘要： Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

公开(公告)号：US20240060820A1

公开(公告)日：2024-02-22

申请号：US18180736

申请日：2023-03-08

申请人： VERIFOOD, LTD.

发明人： Damian GOLDRING ,  Dror SHARON ,  Guy BRODETZKI ,  Amit RUF ,  Menahem KAPLAN ,  Sagee ROSEN ,  Omer KEILAF ,  Uri KINROT ,  Kai ENGELHARDT ,  Ittai NIR

IPC分类号： G01J3/10 ,  G01J3/02 ,  G01N21/25 ,  G01J3/12 ,  G01J3/28 ,  G01J3/36 ,  G01J5/02 ,  G01J5/10 ,  G01N33/02 ,  G01J3/26 ,  G01J3/45

CPC分类号： G01J3/108 ,  G01J3/10 ,  G01J3/0259 ,  G01N21/255 ,  G01J3/0205 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/12 ,  G01J3/0208 ,  G01J3/0262 ,  G01J3/0272 ,  G01J3/28 ,  G01J3/36 ,  G01J5/0265 ,  G01J5/10 ,  G01N33/02 ,  G01J3/26 ,  G01J3/2803 ,  G01J3/45 ,  G01J3/0229 ,  G01J2003/1226 ,  G01J3/0291 ,  G01J2003/123 ,  G01J2003/1239

摘要： A spectrometer comprises a plurality of isolated optical channels comprising a plurality of isolated optical paths. The isolated optical paths decrease cross-talk among the optical paths and allow the spectrometer to have a decreased length with increased resolution. In many embodiments, the isolated optical paths comprise isolated parallel optical paths that allow the length of the device to be decreased substantially. In many embodiments, each isolated optical path extends from a filter of a filter array, through a lens of a lens array, through a channel of a support array, to a region of a sensor array. Each region of the sensor array comprises a plurality of sensor elements in which a location of the sensor element corresponds to the wavelength of light received based on an angle of light received at the location, the focal length of the lens and the central wavelength of the filter.

公开(公告)号：US20240035891A1

公开(公告)日：2024-02-01

申请号：US18358105

申请日：2023-07-25

申请人： Ivoclar Vivadent AG

发明人： Jonas Reinhardt ,  Christian Niedrig

IPC分类号： G01J3/50 ,  G01J3/02 ,  G01J3/12 ,  G01J3/42

CPC分类号： G01J3/508 ,  G01J3/024 ,  G01J3/0275 ,  G01J3/12 ,  G01J3/42 ,  G01J2003/1282

摘要： A method for spatially resolved color determination, comprising the steps of projecting (S101) a first structured-light pattern having a first wavelength of light onto a dental object;
detecting (S102) a first spatially resolved optical parameter set based on the reflected or remitted first structured-light pattern; projecting (S103) a second structured-light pattern having a second wavelength of light onto the dental object; detecting (S104) a second spatially resolved optical parameter set based on the reflected or remitted second structured-light pattern; and calculating (S105) a third spatially resolved optical parameter set at a third wavelength of light based on the first and second spatially resolved optical parameter sets.

公开(公告)号：US20230417810A1

公开(公告)日：2023-12-28

申请号：US18039205

申请日：2021-12-03

申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE GRENOBLE ALPES

发明人： Hugues GUILLET DE CHATELLUS

IPC分类号： G01R23/165 ,  G01J3/12

CPC分类号： G01R23/165 ,  G01J3/1256

摘要： A wideband device for the spectral analysis of a signal of interest includes a source designed to generate the signal of interest; an optical splitter element designed to spatially split the signal of interest into a first signal and a second signal; a first frequency-shifting optical cavity comprising a first frequency shifter designed to shift the optical frequency of the first signal by a first frequency f1 per round trip in the first cavity, the first cavity having a first trip time τ1; a second frequency-shifting optical cavity comprising a second frequency shifter designed to shift the optical frequency of the second signal by a second frequency f2 per round trip in the second cavity, the second cavity having a second trip time τ2; the first and the second optical cavity being designed such that a maximum number of round trips of the signal in the first and the second cavity is equal to predetermined N; a detector designed to coherently detect the first signal transmitted by the first cavity and the second signal transmitted by the second cavity and generate a photocurrent proportional to a luminous intensity detected by the detector, an analog low-pass filter designed to filter frequencies of the photocurrent that are lower than min (f12/; f2/2) a processor configured to compute a square modulus of the photocurrent filtered by the low-pass filter, from which a temporal representation of frequency information of the signal of interest is determined.

公开(公告)号：US11802792B2

公开(公告)日：2023-10-31

申请号：US17515687

申请日：2021-11-01

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： John A Wheatley ,  Gilles J. Benoit ,  Guanglei Du ,  Rolf W. Biernath ,  Sara Suzanne Merritt ,  James Hillis ,  Owen M. Anderson ,  Timothy J. Nevitt

IPC分类号： G01J1/04 ,  G01J1/20 ,  G01J3/12 ,  G01J3/28 ,  G01J3/46 ,  G01J3/51 ,  G01N21/31 ,  G02B5/136 ,  G02B5/20

CPC分类号： G01J1/0492 ,  G01J1/20 ,  G01J3/12 ,  G01J3/28 ,  G01J3/46 ,  G01J3/513 ,  G01N21/31 ,  G02B5/136 ,  G01J2003/1213 ,  G01J2003/2806 ,  G02B5/201

摘要： A technique of determining the presence of a species in a sample may include passing light through an optical filter. In an example, the optical filter may include a spatially variant microreplicated layer optically coupled to a wavelength selective filter. The wavelength selective filter may have a light incidence angle-dependent optical band. The spatially variant microreplicated layer may be configured to transmit light to a first optical region of the wavelength selective filter at a first predetermined incidence angle and to a second optical region of the wavelength selective filter at a second predetermined incidence angle.