公开(公告)号：US11821790B2

公开(公告)日：2023-11-21

申请号：US17433793

申请日：2020-03-25

Applicant: ams Sensors Singapore Pte. Ltd.

Inventor： Javier Miguel Sánchez

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/28

CPC classification number: G01J3/027 ,  G01J2003/102 ,  G01J2003/2879

Abstract: An example system includes a first light source, a second light source, a photodetector, and an electronic control device. The electronic control device is operable to cause the first light source to emit first light within a range of wavelengths towards a subject, and measure, using the photodetector, the first light reflected from the subject. The electronic control device is also operable to cause the second light source to emit second light including a plurality of emission peaks within the range of wavelengths, and measure, using the photodetector, the second light. The electronic control device is also operable to determine spectral information regarding the subject based on the measured first light and the measured second light.

公开(公告)号：US20230332950A1

公开(公告)日：2023-10-19

申请号：US18131508

申请日：2023-04-06

Applicant: Hitachi High-Tech Corporation

Inventor： Kaifeng ZHANG ,  Masahiro WATANABE ,  Takenori HIROSE

IPC: G01J3/02 ,  G01J3/10

CPC classification number: G01J3/021 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/10 ,  G01J2003/102

Abstract: Provided is a spectrometry apparatus that suppresses a reduction in usage efficiency of an irradiation energy of a light. A spectrometry apparatus of the disclosure includes a stage on which a sample is placed, an electromagnetic source that emits an electromagnetic wave, one or a plurality of optical elements that transform a spatial energy distribution of the electromagnetic wave and emit the electromagnetic wave, and a reflective objective lens that collects the electromagnetic wave after a transformation of the spatial energy distribution and irradiates the sample with the collected electromagnetic wave.

公开(公告)号：US20230307562A1

公开(公告)日：2023-09-28

申请号：US18023418

申请日：2021-05-26

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tatsuo DOUGAKIUCHI ,  Akio ITO ,  Masahiro HITAKA ,  Tadataka EDAMURA

IPC: H01L31/0352 ,  G01J3/45 ,  G01J3/457 ,  G01J3/10 ,  H01L23/482 ,  H01L31/02 ,  H01L31/0232 ,  H01L31/0304

CPC classification number: H01L31/035236 ,  G01J3/45 ,  G01J3/457 ,  G01J3/10 ,  H01L23/4821 ,  H01L31/02005 ,  H01L31/02325 ,  H01L31/035281 ,  H01L31/03046 ,  G01J2003/102

Abstract: A photodetector includes: a semiconductor substrate; a mesa portion formed on a major surface of the semiconductor substrate to extend along an optical waveguide direction; a first contact layer; a second contact layer; a first electrode; and an air bridge wiring electrically connected to the first contact layer and the first electrode. When viewed in a direction perpendicular to the major surface of the semiconductor substrate, a length of the mesa portion in the optical waveguide direction is longer than a length of the mesa portion in a direction perpendicular to the optical waveguide direction. The air bridge wiring is led out from the first contact layer to one side in the direction perpendicular to the optical waveguide direction, and is bridged between the first contact layer and the first electrode.

公开(公告)号：US11650101B2

公开(公告)日：2023-05-16

申请号：US18063217

申请日：2022-12-08

Applicant: IRsweep AG

Inventor： Stéphane Schilt ,  Pierre Brochard ,  Kenichi Komagata ,  Giulio Terrasanta ,  Andreas Hugi

IPC: H01S5/40 ,  H01S5/062 ,  G01J3/433 ,  G01J3/10 ,  G01J3/42

CPC classification number: G01J3/433 ,  H01S5/0623 ,  H01S5/4006 ,  G01J2003/102 ,  G01J2003/423 ,  G01J2003/4332

Abstract: A dual-comb spectrometer comprising two lasers outputting respective frequency combs having a frequency offset between their intermode beat frequencies. One laser acts as a master and the other as a follower. Although the master laser is driven nominally with a DC drive signal, the current on its drive input line nevertheless oscillates with an AC component that follows the beating of the intermode comb lines lasing in the driven master laser. This effect is exploited by tapping off this AC component and mixing it with a reference frequency to provide the required frequency offset, the mixed signal then being supplied to the follower laser as the AC component of its drive signal. The respective frequency combs in the optical domain are thus phase-locked relative to each other in one degree of freedom, so that the electrical signals obtained by multi-heterodyning the two optical signals are frequency stabilized.

公开(公告)号：US20190200904A1

公开(公告)日：2019-07-04

申请号：US16312080

申请日：2018-05-22

Applicant: Rijul GUPTA

Inventor： Rijul GUPTA

IPC: A61B5/1455 ,  A61B5/00 ,  A61B5/145 ,  G01J3/427 ,  G01J3/457 ,  G01J3/10 ,  G01J3/02

CPC classification number: A61B5/1455 ,  A61B5/0059 ,  A61B5/0075 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/6826 ,  A61B5/7267 ,  A61B5/7475 ,  G01J3/00 ,  G01J3/0262 ,  G01J3/10 ,  G01J3/28 ,  G01J3/427 ,  G01J3/457 ,  G01J2003/102 ,  G01N21/31 ,  G01N21/474 ,  G01N21/49 ,  G01N2021/3155 ,  G01N2021/3181

Abstract: A multi-channel measurement device for measuring properties of human tissue, may comprise a microcontroller and first and second source/sensor complexes. The first source/sensor complex may include a first housing having a first measurement portion, a first light sensor coupled to the microcontroller and exposed to the first measurement portion, and a first plurality of light sources coupled to the microcontroller and exposed to the first measurement portion. The second source/sensor complex may include a second housing having a second measurement portion, a second light sensor coupled to the microcontroller and exposed to the second measurement portion, and a second plurality of light sources coupled to the microcontroller and exposed to the second measurement portion. The first and second source/sensor complexes are coupled to each other such that the first measurement portion is opposite the second measurement portion and human tissue may be placed between the the first and second measurement portions. The microprocessor is configured with instructions stored in non-volatile memory to individually activate each of the light sources of the first and second pluralities of light sources and to record light intensity detected by the first and second light sources while an individual light source is activated. Each combination of an individually activated light source and one of the first and second light sensors provides a distinct measurement channel for measuring the absorption spectra of human blood and tissue.

公开(公告)号：US09983059B2

公开(公告)日：2018-05-29

申请号：US15502430

申请日：2015-07-13

Applicant: ARCHIMEJ TECHNOLOGY

Inventor： Mejdi Nciri ,  Eric Christian Belarbre ,  Henri Leung

IPC: G01J3/28 ,  G01J3/447 ,  G01J3/10 ,  G01J3/433

CPC classification number: G01J3/447 ,  G01J3/10 ,  G01J3/4338 ,  G01J2003/102

Abstract: Disclosed is a spectroscopy device, including an analysis zone for receiving a sample; at least one light-emitting diode arranged to emit a light beam towards the analysis zone, having a luminous intensity spectral profile in a working wavelength interval; unit for varying with time the luminous intensity spectral profile emitted by the diode in the working wavelength interval of the diode; a detector, arranged to receive, during a variation with time of the luminous intensity spectral profile emitted by the diode, the light beam emitted by the diode and having crossed the analysis zone, and supplying a detection signal of the light beam emitted by the diode and received by the detector, in the form of a signal which depends on at least one characteristic representative of the luminous intensity spectral profile of the light-emitting diode. Application to derivative spectroscopy.

公开(公告)号：US20180128680A1

公开(公告)日：2018-05-10

申请号：US15586720

申请日：2017-05-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dong Ho KIM

IPC: G01J3/10 ,  G01J3/28 ,  A61B5/145 ,  A61B5/1455

CPC classification number: G01J3/10 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B2560/0242 ,  G01J3/28 ,  G01J3/32 ,  G01J3/44 ,  G01J2003/102 ,  G01J2003/106 ,  G01J2003/284

Abstract: A spectrometer according to one aspect may include a plurality of light sources configured to emit light to a target object, a plurality of wavelength controllers installed on one surface of each of the plurality of light sources and configured to adjust a peak wavelength band of each of the light sources, and a detection unit configured to detect light returning from the target object.

公开(公告)号：US20180113027A1

公开(公告)日：2018-04-26

申请号：US15726276

申请日：2017-10-05

Applicant: Mitutoyo Corporation

Inventor： Koji Kubo

IPC: G01J3/50 ,  G01J3/02 ,  G01J3/10

CPC classification number: G01J3/502 ,  G01J3/0208 ,  G01J3/10 ,  G01J2003/102

Abstract: A chromatic confocal sensor includes: a light source portion that emits a plurality of light beams having different wavelengths; a plurality of optical heads that converge the plurality of light beams emitted from the light source portion at different focal positions and emit measurement light reflected by a measurement point at the focal positions; a spectrometer including a line sensor, and an optical system that includes a diffraction grating that diffracts a plurality of measurement light beams emitted from the plurality of optical heads, and emits the plurality of measurement light beams diffracted by the diffraction grating to a plurality of different light-receiving areas of the line sensor; and a position calculation portion that calculates a position of a plurality of measurement points as a measurement target of the plurality of optical heads based on a light-receiving position of the plurality of light-receiving areas of the line sensor.

公开(公告)号：US09874522B2

公开(公告)日：2018-01-23

申请号：US15128111

申请日：2015-03-23

Applicant: OPTIQGAIN LTD.

Inventor： Ram Alon ,  Dan Leigh ,  Nitzan Eliyahu ,  Yaron Lapidot

IPC: G01J3/44 ,  G01N21/65 ,  G01J3/10

CPC classification number: G01N21/65 ,  G01J3/10 ,  G01J3/44 ,  G01J3/4412 ,  G01J2003/102 ,  G01N21/274 ,  G01N2021/655 ,  G01N2201/06113

Abstract: A small size, robust stimulated Raman scattering (SRS) spectrophotometer system for industrial, medical and field use, exhibiting high SNR, high resolution and very short acquisition times. The architecture of the system allowing for such features comprises three main elements: (1). Use of a narrow range tunable pump laser and an array of fixed wavelength lasers to produce the wavelength differences as required to generate the SRS (Raman) spectrum; (2). Application of analog signal processing, prior to the digital conversion, in order to obtain higher resolution and SNR; (3). Use of relatively inaccurate or unstable laser sources coupled to calibration samples, followed by various calibration methods to compensate for system instabilities, such as wavelength drift, laser inaccuracies, and variations in the optical components/elements of the system.

公开(公告)号：US20170336255A1

公开(公告)日：2017-11-23

申请号：US15598152

申请日：2017-05-17

Applicant: University of Maribor

Inventor： Denis Donlagic ,  Simon Pevec

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/10 ,  G01J3/42 ,  G01J3/32 ,  G01J3/26 ,  G01L9/00 ,  G01J3/427

CPC classification number: G01J3/0218 ,  G01B2290/25 ,  G01J3/0208 ,  G01J3/0224 ,  G01J3/0237 ,  G01J3/0289 ,  G01J3/10 ,  G01J3/26 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/32 ,  G01J3/42 ,  G01J3/427 ,  G01J2003/102 ,  G01J2003/104 ,  G01L9/0079

Abstract: An optical system having an optical sensor with an ultra-short FP cavity, and a low-resolution optical interrogation system coupled to the optical sensor and operational to send light signals and receive light signals to and from the optical sensor is disclosed. The optical system may operate in a wavelength range including the visible and near-infrared range. Optical assemblies and methods of interrogating optical sensors are provided, as are numerous other aspects.