Messvorrichtung für biologisches Material

Eine Steuerung korrigiert ein Spektrum S (λ), das bei einer Wellenlänge λ des Signallichts erfasst wird, zu S' (λ) gemäß den folgenden Ausdrücken:undwobei 11 die Intensität des bei der Wellenlänge λ1 von Referenzlicht erfassten Infrarotlichts und 12 die Intensität der bei einer Wellenlänge λ2 von Korrekturlicht erfassten Infrarotlichts ist.

Method and apparatus for the monitoring and control of combustion

A DETECTOR SYSTEM COMPRISING A PLURALITY OF LIGHT GUIDES AND A SPECTROMETER COMPRISING THE DETECTOR SYSTEM

A detector system (100) comprising a plurality of light guides (11a, 11b, 11c, 11d) is provided. Each light guide (11a, 11b, 11c, 11d) is guiding incoming light from a respective object in use, wherein the incoming light is provided by means of an illuminating means (10). The detector system (100) comprises diffracting means (12) for diffracting the incoming light in different wavelength ranges, at least one focuser (13) for projecting the incoming light exiting the light guides onto the diffracting means, a detector (14) having a detector area for receiving the diffracted light from the plurality of Sight guides, and a control unit (15). These are arranged to pulsate incoming light via only one light guide at a time based on a pulse timing parameter, and record a spectrum of light diffracted from each light guide and detected by the detector (14) based on the pulse timing parameter.

SPECTRAL LIGHTING MODELING AND CONTROL

Spectral irradiance distributions are calculated within a virtual environment based on arbitrary light source spectral power distributions. Architectural, horticultural and aquacultural lighting control systems use the calculated results to control both the intensity and spectral power distribution of the electric light sources. Energy consumption may be minimized while maintaining optimal occupant visual comfort and plant health.

METHOD AND SYSTEM FOR QUANTIFYING BIOMARKER OF A TISSUE

The present disclosure relates to a method and a system for quantifying a biomarker of a biological tissue. Two spectral sub-intervals are determined from a plurality of images of the tissue acquired at discrete wavelengths within a main wavelength interval using an imaging sensor in a manner such that the combination of the image data in the at least two spectral sub-intervals are correlated with a clinical variable of interest. The tissue is illuminated using one or more light sources with wavelengths within the at least two spectral sub-intervals. A measurement is of the light reflected by the tissue is acquired using an imaging sensor; and a measure of the biomarker of the tissue is calculated using the acquired measurement. The main wavelength interval is broader than each of the at least two spectral sub-intervals and at least one spectral confounder causing a spectral variability of the acquired image is present in the tissue.

SPECTROMETER

The present invention concerns an LED spectrometer operating without moving parts, according to the sweep principle, and appropriate to serve as a structural component in many kinds of spectroscopic concentration analysers. The design of the invention affords the advantage that, even at its minimum, the optical power of the LED spectrometer of the invention is about fivefold compared with designs of prior art. Furthermore, improvement of the efficiency of the LED radiation source and of that of the optics has brought a multiple augmentation in power to the wavelength spectrum sent out by the radiation source. In the design of the invention, concentrators (6) of non-imaging type are used to collimate the wavelength spectrum emitted by the LEDs (3).

SPECTROMETER WITH THE LIGHT-EMITTING DIODE MATRIX

Optical sensor module for spectroscopic measurement

Method And Apparatus For The Monitoring And Control Of A Process

A diode laser spectroscopy gas sensing apparatus having a diode laser with a select lasing frequency, a pitch optic coupled to the diode laser with the pitch optic being operatively associated with a process chamber and oriented to project laser light along a projection beam through the process chamber. This embodiment additionally includes a catch optic in optical communication with the pitch optic to receive the laser light projected through the process chamber and an optical fiber optically coupled to the catch optic. In addition, the catch optic is operatively associated with a catch side alignment mechanism which provides for the alignment of the catch optic with respect to the projection beam to increase a quantity of laser light received by the catch optic from the pitch optic and coupled to the optical fiber and a detector sensitive to the select lasing frequency optically coupled to the optical fiber. The catch side alignment mechanism may consist of means to tilt the catch optic ...

Heterogeneous spectroscopic transceiving photonic integrated circuit sensor

Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object.

PULSED ILLUMINATION IN A HYPERSPECTRAL, FLUORESCENCE, AND LASER MAPPING IMAGING SYSTEM

Pulsed hyperspectral, fluorescence, and laser mapping imaging in a light deficient environment is disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a controller configured to synchronize timing of the emitter and the image sensor. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises one or more of a hyperspectral emission, a fluorescence emission, or a laser mapping pattern.

Method for selection of Raman excitation wavelengths in multi-source Raman probe

A method is disclosed for providing enhanced quantitative analysis of materials by a dual-laser Raman probe wherein the wavelengths of the lasers used to illuminate a target object are selected in a manner to improve and enhance the quantitative analysis performance of the Raman signals.

MIRROR UNIT AND OPTICAL MODULE

A mirror unit 2 includes a mirror device 20 including a base 21 and a movable mirror 22, an optical function member 13, and a fixed mirror 16 that is disposed on a side opposite to the mirror device 20 with respect to the optical function member 13. The mirror device 20 is provided with a light passage portion 24 that constitutes a first portion of an optical path between the beam splitter unit 3 and the fixed mirror 16. The optical function member 13 is provided with a light transmitting portion 14 that constitutes a second portion of the optical path between the beam splitter unit 3 and the fixed mirror 16. A second surface 21b of the base 21 and a third surface 13a of the optical function member 13 are joined to each other.

SPECTRALLY ADJUSTABLE LIGHT SOURCE FOR ILLUMINATING AN OBJECT

УСТРОЙСТВО ДЛЯ АНАЛИЗА СРЕДЫ И СООТВЕТСТВУЮЩИЕ УСТРОЙСТВО И СПОСОБ ДЛЯ ИДЕНТИФИКАЦИИ ЯИЦ

FIELD: device for the examination of the analyzed environment. SUBSTANCE: invention relates to device for the examination of the analyzed environment, such as a avian eggs. Device contains an emitting unit for emitting light into the analyzed environment. The emitting unit contains a first radiation source for emitting a first light signal, and a second radiation source for emitting a second light signal. First and second light signals are transmitted through a quadrature phase shift environment. Detector unit is configured to detect the first and second light signals transmitted through the specified medium. In addition, the detector unit is configured to determine the relative or absolute amplitude of each of the first and second light signals. The processor is configured to process the detected signal and identify environment properties using at least one of the relative or absolute amplitudes of the first and second light signals. A corresponding method is also proposed. EFFECT: provides environment properties identification. 24 cl, 1 tbl, 22 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 743 933 C1 (51) МПК G01N 21/25 (2006.01) G01J 9/00 (2006.01) G01N 33/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01N 21/25 (2021.02); G01J 9/00 (2021.02); G01N 33/08 (2021.02) (21)(22) Заявка: 2020103493, 27.07.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ЗОИТИС СЕРВИСЕЗ ЭлЭлСи (US) 01.03.2021 (56) Список документов, цитированных в отчете о поиске: US 5995858 A, 30.11.1999. US 2015042985 А1, 12.02.2015. US 2012002204 А1, 05.01.2012. US 2002075476 A1, 20.06.2002. 01.08.2017 US 62/539,684 (45) Опубликовано: 01.03.2021 Бюл. № 7 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 02.03.2020 (86) Заявка PCT: 2 7 4 3 9 3 3 R U (87) Публикация заявки PCT: WO 2019/027814 (07.02.2019) C 1 C 1 US 2018/043996 (27.07.2018) 2 7 4 3 9 3 3 Приоритет(ы): (30) ...

СИСТЕМА, ГЕНЕРИРУЮЩАЯ АЭРОЗОЛЬ, СО СПЕКТРОМЕТРОМ ДЛЯ АНАЛИЗА АЭРОЗОЛЯ

VERFAHREN ZUR PUNKTUALEN ERMITTLUNG DER SPEKTRALEN REMISSIONSFUNKTION MITTELS EINES OPTOELEKTRONISCHEN FARBMESSKOPFES

Tragbare Feuchtigkeitsmesseinrichtung

Die Erfindung betrifft eine tragbare Feuchtigkeitsmesseinrichtung für ein biologisches Material, die ein Hauptelement mit einer Anzeigeeinrichtung, einem Bedienungselement und einer Stromquelle aufweist, sowie eine Steuereinrichtung zum Kommunizieren mit der Anzeigeeinrichtung und dem Bedienungselement, sowie einen Handgriff, der mit dem Hauptelement verbunden ist, sowie einen Stab mit einem ersten Ende und einem zweiten Ende, wobei das erste Ende mit dem Hauptelement verbunden ist, und eine Sensoreinrichtung zum Messen von Feuchtigkeitswerten in dem biologischen Material, die mit dem zweiten Ende des Stabs verbunden ist und die elektrisch mit der Steuereinrichtung verbunden ist. Die Erfindung offenbart außerdem ein Nahinfrarotspektroskop zum Drücken gegen ein zu analysierendes Material.

Optical property measurement using a sensor behind a display screen

A device 204 for measuring optical properties such as colour or transparency of a target material 210 such as skin, includes a display screen 201 which is placed in contact with the target 210 and illuminates the target 210 with an illumination area 211. Reflected light 212 reflects off the target 210, transmits back through the display screen 201 and is detected by a light sensor 207 positioned behind the screen 201 and analysed. The illumination area may be a white or coloured pattern and the size, shape and position may be varied. A calibration function may be used to account for a non-zero transmission function of the display screen 201 and the sensitivity of the sensor 207. The display screen 201 may be an OLED screen. A diffuser and/or filter 203 may be positioned between the display screen 201 and sensor 207 to block unwanted light or reduce scattering inhomogeneity.

LIGHT ENERGY FLUORESCENCE EXCITATION

There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.

FLUORESCENCE FILTERING SYSTEM AND METHOD FOR MOLECULAR IMAGING

An optical system is disclosed that can be used for fluorescence filtering for molecular imaging. In one preferred embodiment, a source subsystem is disclosed comprising a light source and a first set of filters designed to pass wavelengths of light in an absorption band of a fluorescent material. A detector subsystem is also disclosed comprising a light detector, imaging optics, a second set of filters designed to pass wavelengths of light in an emission band of the fluorescent material, and an aperture located at a front focal plane of the imaging optics. A telecentric space is created between the light detector and the imaging optics, such that axial rays from a plurality of field points emerge from the imaging optics parallel to each other and perpendicular to the second set of filters ...

SHORT-WAVE INFRARED SUPER-CONTINUUM LASERS FOR EARLY DETECTION OF DENTAL CARIES

A system and method for using near-infrared or short-wave infrared (SWIR) sources such as lamps, thermal sources, LED's, laser diodes, super-luminescent laser diodes, and super-continuum light sources for early detection of dental caries measure transmission and/or reflectance. In the SWIR wavelength range, solid, intact teeth may have a low reflectance or high transmission with very few spectral features while a carious region exhibits more scattering, so the reflectance increases in amplitude. The spectral dependence of the transmitted or reflected light from the tooth may be used to detect and quantify the degree of caries. Instruments for applying SWIR light to one or more teeth may include a C-clamp design, a mouth guard design, or hand-held devices that may augment other dental tools. The measurement device may communicate with a smart phone or tablet, which may transmit a related signal to the cloud, where additional value-added services are performed.

METHOD OF FABRICATING A LIGHT EMITTER

La présente invention concerne un procédé de fabrication d'un émetteur de lumière comprenant plusieurs sources (S1 à S15) et un support (2). Chaque source (S1 à S15) est agencée pour émettre un faisceau lumineux à une longueur d'onde de travail. Pour chaque source, on détermine une position (X1 à X15) de cette source le long d'une direction de fixation (3), en fonction de propriétés optiques d'un multiplexeur spectral prévu pour être associé à cet émetteur, de la longueur d'onde de travail de cette source et d'un placement de l'émetteur par rapport au multiplexeur. Ces positions (X1 à X15) sont déterminées pour que, lorsque l'émetteur est associé au multiplexeur, le multiplexeur (4) superpose spatialement les faisceaux lumineux. Ensuite, on fixe, le long de la direction de fixation (3), chaque source (S1 à S15) sur le support (2) à sa position (X1 à X15) précédemment déterminée, de sorte que les sources soient réparties selon la loi ou les propriétés de dispersion chromatique du multiplexeur ...

DETECTION OF INDICATIONS OF PSYCHOACTIVE COMPONENTS IN A LIQUID

A method of contactless detection of indications of psychoactive components in a liquid (6) is disclosed and an apparatus therefor, the method comprising the steps of emitting substantially monochromatic light at least at two different wavelengths (La, Lb) and detecting the reflection in a free surface (12) of said liquid (6) by means of a photo detector (5), analysing an output signal from the photo detector (5) to identify output parts caused by light emitted from the first (3a) and second emitter (3b), respectively, and determine whether the liquid (6) contains at least one psychoactive component.

Optical sensing apparatus and measuring method thereof

A METHOD FOR SCANNING A COLOURED SURFACE OF A TILE AND A DEVICE FOR ACTUATING THE METHOD

Spectrum measurement system

METHOD AND APPARATUS FOR THE MONITORING AND CONTROL OF COMBUSTION

A sensing apparatus consisting of more than one diode laser having select lasing frequencies, a multiplexer optically coupled to the outputs of the diode lasers with the multiplexer being further optically coupled to a pitch side optical fiber. Multiplexed laser light is transmitted through the pitch side optical fiber to a pitch optic operatively associated with a process chamber which may be a combustion chamber or the boiler of a coal or gas fired power plant. The pitch optic is oriented to project multiplexed laser output through the process chamber. Also operatively oriented with the process chamber is a catch optic in optical communication with the pitch optic to receive the multiplexed laser output projected through the process chamber. The catch optic is optically coupled to an optical fiber which transmits the multiplexed laser output to a demultiplexer. The demultiplexer demultiplexes the laser light and optically couples the select lasing frequencies of light to a detector with ...

Methods for Color Sensing Ambient Light Sensor Calibration

An electronic device may be provided with a color sensing ambient light sensor. The color sensing ambient light sensor may measure the color of ambient light. Control circuitry in the electronic device may use information from the color sensing ambient light sensor in adjusting a display in the electronic device or taking other action. The color sensing ambient light sensor may have light detectors with different spectral responses. A test system may be used to calibrate the color sensing light sensor. The test system may have a tunable light source with light-emitting diodes that are turned on in sequence while gathering measured responses from the detectors. Numerical optimization techniques may be used to produce final versions of the spectral responses for the light detectors from the measured responses and corresponding calibration data that is stored in the electronic device.

INPUT AND OUTPUT OPTICAL SYSTEMS FOR MULTIPASS SPECTROSCOPIC ABSORPTION CELLS

Systems and methods of the present disclosure are directed to detecting species within a fluid using a multi-pass absorption cell and a spectrometer. The absorption cell includes a plurality of mirrors arranged in a manner such that a detection light traverses multiple passes through the fluid within the absorption cell. In some implementations, the detection light is reflected by the plurality of mirrors to form optical paths in more than one plane. The system also includes an electronic unit configured to receive and process spectral data from the spectrometer. In some implementations, the electronic unit communicates with at least one computational unit over a communication interface to send a portion of the spectral data for processing. The electronic unit may also receive processed data from the computational unit.

Optical device

In an optical device, an elastic support unit includes a pair of levers which face in a second direction perpendicular to a first direction, a pair of first torsion support portions which are connected between the levers and the base, a pair of second torsion support portions which are connected between the pair of levers and the movable unit, and a first link member that bridges the levers. The levers and the first link member define a light passage opening. Each of connection positions between the levers and the first torsion support portions is located on a side opposite to the movable unit with respect to the center of the light passage opening in a third direction perpendicular to the first direction and the second direction. A maximum width of the light passage opening in the second direction is defined by a gap between the levers in the second direction.

A DETECTOR SYSTEM COMPRISING A PLURALITY OF LIGHT GUIDES AND A SPECTROMETER COMPRISING THE DETECTOR SYSTEM

Возбуждение световой энергии флуоресценции

FIELD: biological and chemical testing. SUBSTANCE: present invention provides a method and system for conducting biological or chemical testing, as well as a light energy exciter, which may include one or more light sources. The light energy exciter can emit excitation light directed towards the detector surface, which can support biological or chemical samples. The method for carrying out biological or chemical tests includes the following steps, where excitation light is emitted using a light energy exciter, wherein the light energy exciter comprises a first light source and a second light source, the first light source being designed to emit excitation light beams in a first emission wavelength range, and the second light source is designed to emit beams of excitation light in the second range of radiation wavelengths, wherein the light energy exciter further comprises a light guide for homogenizing the excitation light and directing the excitation light to the distal end of the light energy exciter, the light guide comprising a light entrance surface and a light exit surface and is configured to receive beams of excitation light from the first and second light sources. In this case, the light guide is made in the form of a cone-shaped structure and has an increasing diameter along its entire length in the direction from the light entrance surface of the light guide to the light exit surface of the light guide, and the light guide is configured to reflect the excitation light so that the light rays coming out from the light exit surface of the light guide, determined the cone of divergence of light, which diverges with respect to the optical axis of the exciter of light energy. The detector then receives the excitation light and the emission signal light resulting from the excitation by the excitation light, the detector comprises a detector surface for supporting biological or chemical samples and a sensor array located at a distance from the detector surface, ...

Lichtquelle mit steuerbarem Spektrum

Die Erfindung betrifft eine Vorrichtung zur Erzeugung von Licht, mit – einer Mehrzahl von Lichtquellen (1), – einer die Lichtquellen (1) ansteuernden Steuereinrichtung (2) und – einer Überlagerungsoptik, die das von den Lichtquellen (1) emittierte Licht in einer Austrittsöffnung (3) überlagert. Es ist Aufgabe der Erfindung, eine gegenüber dem Stand der Technik verbesserte Vorrichtung bereitzustellen. Hierzu schlägt die Erfindung vor, dass die Überlagerungsoptik – einen ersten Hohlspiegel (4), in dessen Fokusebene sich die Lichtquellen (1) befinden, – ein optisches Gitter (5), auf das der erste Hohlspiegel (4) das von den Lichtquellen (1) emittierte Licht (6) reflektiert, und – einen zweiten Hohlspiegel (7), der das an dem optischen Gitter (5) gebeugte Licht (8) auf die im Fokus des zweiten Hohlspiegels (7) befindliche Austrittsöffnung (3) reflektiert, umfasst.

Haushaltsgerät mit einer Trocknungsfunktion und mit einer Vorrichtung zur Erfassung einer Feuchte, sowie Verfahren zum Erfassen einer Feuchte

Die vorliegende Erfindung betrifft ein Haushaltsgerät (10) mit einer Trocknungsfunktion und mit einer Vorrichtung zur Erfassung einer Feuchte H von in dem Haushaltsgerät (10) anordenbaren zu trocknenden Gegenständen (20), wobei das Haushaltsgerät (10) aufweist: einen Behälter (18) zum Aufnehmen der zu trocknenden Gegenstände (20), mindestens einen Sensor (12) zur Erfassung mindestens eines Messsignals in Form einer von den zu trocknenden Gegenständen (20) reflektierten Lichtintensität (I, I, I), und eine Steuerung (16), welche mit dem mindestens einen Sensor (12) verbunden ist und in welcher mindestens eine Referenzkennlinie (30) gespeichert ist, wobei der Sensor (12) konfiguriert ist, ein erstes Messsignal (I) in einer Wasserabsorptionsbande entsprechend einem Wellenlängenbereich, in welchem Wasser Licht absorbiert, zu erfassen, und mindestens ein zweites Messsignal in einem anderen Wellenlängenbereich zu erfassen, welches eine reflektierte Lichtintensität (I) aufweist, und an die Steuerung ...

A monitoring system and method for identifying objects

A monitoring system 100 for identifying objects in a passenger cabin of a motor vehicle includes an imaging module 102 to capture multiple spectral images. The imaging module has a plurality of light sources 108, 108’ for emitting light rays at different spectral bandwidths. The monitoring system further includes a processing unit 116 operable to combine light rays emitted from at least two of the plurality of light sources into a combined light ray operating in a single wavelength, such that the imaging module is operable to capture a multiple spectral image of a passenger cabin for object identification. The light emitters may be switched on sequentially or simultaneously. A method of identifying objections in a passenger cabin of a motor vehicle base on a multiple spectral image captured by a monitoring disclosed herein, a computer software product and a non-transitory medium prestored with the same is also disclosed ...

Spectrometer

Die Erfindung betrifft ein Spektrometer (1) und ein Verfahren zur Untersuchung der Inhaltsstoffe eines Fluids (2) durch Erfassung der Absorption (α) bei einer gewünschten Messwellenlänge (λm), mit einem Gehäuse (3) mit darin angeordneter Lichtquelle (4), welche aus zumindest einer Leuchtdiode (10) gebildet ist, und zumindest einem darin angeordneten Detektor (5), wobei das Licht der Lichtquelle (4) durch ein Sendefenster (7) durch das zu untersuchende Fluid (2) und durch ein Empfangsfenster (8) zu dem zumindest einen Detektor (5) geführt wird. Zur Verbesserung der Messgenauigkeit und Linearität, insbesondere im unteren UV-Bereich (200 nm bis 280 nm) und zum Ausgleich der Nichtlinearität des Spektrum der Absorption (α) besitzt zumindest eine Leuchtdiode (10) des Spektrometers (1) ein Emissionsmaximum bei einer Wellenlänge (λL), die um eine vorgegebene Wellenlängendifferenz (∆λ)zwischen 1 nm bis 5 nm unterhalb der Messwellenlänge (λm) liegt.

Iilumination device for spectral imaging

An illumination system incorporating a multi-faceted mirror in operative communication with an array of discrete illumination sources. The multi-faceted mirror may accept incident light beams from discrete illumination sources located at different positions and then deliver a reflected output to a common location for direct acceptance by an optical/imaging device or by a light guide transmission device operatively connected to a downstream optical/imaging device. Individual light sources may be selected and/or combined in a defined sequence by selectively activating and deactivating such light sources electronically with no need for moving parts. By pulsing different illumination sources, the optical/imaging system may be provided with a feed of narrow-band illumination for use in imaging. Outputs from several illumination sources can also be combined if desired to produce a custom-tuned illumination spectrum for a particular application.

Apparatus for analyzing a media, and associated egg identification apparatus and method

An apparatus (100) for interrogating a media to be analyzed, such as an avian egg, is provided. Such an apparatus (100) includes an emitter assembly (200) configured to emit light toward a media. The emitter assembly has a first emitter source (210) configured to emit a first light signal and a second emitter source (220) configured to emit a second light signal. The first and second light signals are transmitted through the media in phase quadrature. A detector assembly (300) is configured to detect the first and second light signals transmitted through the media. The detector assembly (300) is further configured to resolve a relative or absolute amplitude of each of the first and second light signals. A processor (600) is configured to process the detected signal to identify a property of the media using at least one of the relative and absolute amplitudes of the first and second light signals. An associated method is also provided. Figure 5 (1) Tek AFG3022(ARBITRARY FUNCTION GENERATOR ...

METHOD AND APPARATUS FOR THE MONITORING AND CONTROL OF COMBUSTION

A sensing apparatus (10) consisting of more than one diode laser (12) having select lasing frequencies, a multiplexer (16) optically coupled to the outputs of the diode lasers with the multiplexer being further optically coupled to a pitch side optical fiber. Multiplexed laser light is transmitted through the pitch side optical fiber to a pitch optic (20) operatively associated with a process chamber (22) which may be a combustion chamber or the boiler of a coal or gas fired power plant. The pitch optic (20) is oriented to project multiplexed laser output through the process chamber. Also operatively oriented with the process chamber is a catch optic (24) in optical communication with the pitch optic to receive the multiplexed laser output projected through the process chamber. The catch optic (24) is optically coupled to an optical fiber which transmits the multiplexed laser output to a demultiplexer (28). The demultiplexer (28) demultiplexes the laser light and optically couples the select ...

METHOD OF MANUFACTURING A LIGHT-EMITTING

METHOD OF MANUFACTURING A LIGHT-EMITTING

La présente invention concerne un procédé de fabrication d'un émetteur de lumière comprenant plusieurs sources (S1 à S15) et un support (2). Chaque source (S1 à S15) est agencée pour émettre un faisceau lumineux à une longueur d'onde de travail. Pour chaque source, on détermine une position (X1 à X15) de cette source le long d'une direction de fixation (3), en fonction de propriétés optiques d'un multiplexeur spectral prévu pour être associé à cet émetteur, de la longueur d'onde de travail de cette source et d'un placement de l'émetteur par rapport au multiplexeur. Ces positions (X1 à X15) sont déterminées pour que, lorsque l'émetteur est associé au multiplexeur, le multiplexeur (4) superpose spatialement les faisceaux lumineux. Ensuite, on fixe, le long de la direction de fixation (3), chaque source (S1 à S15) sur le support (2) à sa position (X1 à X15) précédemment déterminée, de sorte que les sources soient réparties selon la loi ou les propriétés de dispersion chromatique du multiplexeur ...

VISUALIZATION OF SURGICAL DEVICES

A surgical visualization system is disclosed. The surgical visualization system is configured to identify one or more structure(s) and/or determine one or more distances with respect to obscuring tissue and/or the identified structure(s). The surgical visualization system can facilitate avoidance of the identified structure(s) by a surgical device. The surgical visualization system can comprise a first emitter configured to emit a plurality of tissue-penetrating light waves and a second emitter configured to emit structured light onto the surface of tissue. The surgical visualization system can also include an image sensor configured to detect reflected visible light, tissue-penetrating light, and/or structured light. The surgical visualization system can convey information to one or more clinicians regarding the position of one or more hidden identified structures and/or provide one or more proximity indicators.

BODILY EMISSION ANALYSIS

Apparatus and methods are described for use with feces of a subject that are disposed within a toilet bowl. One or more light sensors receive light from the toilet bowl, while the feces are disposed within the toilet bowl. A computer processor detects a set of three or more spectral components that have a characteristic relationship with each other in a light spectrum of bile, by analyzing the received light, and detects a presence of bile within the feces, in response to detecting the set of three or more spectral components. The computer processor generates an output in response thereto. Other applications are also described.

СИСТЕМА, ГЕНЕРИРУЮЩАЯ АЭРОЗОЛЬ, СО СПЕКТРОМЕТРОМ ДЛЯ АНАЛИЗА АЭРОЗОЛЯ

Настоящее изобретение относится к удерживаемому рукой устройству, генерирующему аэрозоль. Удерживаемое рукой устройство, генерирующее аэрозоль, содержит излучатель (2), выполненный с возможностью излучения света. Кроме того, удерживаемое рукой устройство, генерирующее аэрозоль, содержит датчик (4), выполненный с возможностью приема света, и камеру (8) для аэрозоля, выполненную с возможностью содержания аэрозоля. Излучатель дополнительно выполнен с возможностью излучения света в камеру для аэрозоля. Датчик дополнительно выполнен с возможностью приема света из камеры для аэрозоля и измерения по меньшей мере одной длины волны спектра принятого света. 2 н. и 13 з.п. ф-лы, 8 ил.

Spectrometer

Die Erfindung betrifft ein Spektrometer (1) und ein Verfahren zur Untersuchung der Inhaltsstoffe eines Fluids (2) durch Erfassung der Absorption () bei einer gewünschten Messwellenlänge (m), mit einem Gehäuse (3) mit darin angeordneter Lichtquelle (4), welche aus zumindest einer Leuchtdiode (10) gebildet ist, und zumindest einem darin angeordneten Detektor (5), wobei das Licht der Lichtquelle (4) durch ein Sendefenster (7) durch das zu untersuchende Fluid (2) und durch ein Empfangsfenster (8) zu dem zumindest einen Detektor (5) geführt wird. Zur Verbesserung der Messgenauigkeit und Linearität, insbesondere im unteren UVBereich (200 nm bis 280 nm) besitzt zumindest eine Leuchtdiode (10) des Spektrometers (1) ein Emissionsmaximum bei einer Wellenlänge (L), die um eine vorgegebene Wellenlängendifferenz (), insbesondere 1 nm bis 5 nm unterhalb der Messwellenlänge (m) liegt.

Method and apparatus for the monitoring and control of combustion

Iilumination device for spectral imaging

An illumination system incorporating a multi-faceted mirror in operative communication with an array of discrete illumination sources. The multi-faceted mirror may accept incident light beams from discrete illumination sources located at different positions and then deliver a reflected output to a common location for direct acceptance by an optical/imaging device or by a light guide transmission device operatively connected to a downstream optical/imaging device. Individual light sources may be selected and/or combined in a defined sequence by selectively activating and deactivating such light sources electronically with no need for moving parts. By pulsing different illumination sources, the optical/imaging system may be provided with a feed of narrow-band illumination for use in imaging. Outputs from several illumination sources can also be combined if desired to produce a custom-tuned illumination spectrum for a particular application.

AEROSOL-GENERATING SYSTEM WITH SPECTROMETER FOR AEROSOL ANALYSIS

The invention relates to a handheld aerosol-generating device. The handheld aerosol-generating device comprises an emitter (2), configured to emit light. Furthermore, the handheld aerosol-generating device comprises a sensor (4), configured to receive light, and an aerosol chamber (8), configured to comprise an aerosol. The emitter is further configured to emit light into the aerosol chamber. The sensor is further configured to receive light from the aerosol chamber and measure at least one wavelength of the spectrum of the received light.

A device for optically measuring fluorescence of nucleic acids in test samples and use of the device

本发明涉及一种装置(12；72)，用于光学测量试样(14)中核酸的荧光。所述装置(12；72)包括多个试样孔(32)，每个试样孔用于接收由透明材料制成的直立的试样管(16)，每个试样管(16)具有侧壁(20)和底端(22)，并且容纳与至少一种荧光染料一起的试样(14)之一；至少一个激发光源(24；74,76,78,80)，其设置在每个试样孔(32)的附近，用于引导激发光束穿过试样管(16)的侧壁(20)进入到试样(14)中用于激发染料；以及光学荧光检测器(28)，其设置在每个试样管(16)的底端(22)下方，用于捕获激发时从试样(14)中的染料发射的荧光。

SYSTEM FOR MATCHING COARSENESS APPEARANCE OF COATINGS

método para verificar a superfície colorida de uma cerâmica e um dispositivo para acionar o método

HETEROGENEOUS SPECTROSCOPIC TRANSCEIVING PHOTONIC INTEGRATED CIRCUIT SENSOR

Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object. 1. A photonic integrated circuit , comprising:a silicon substrate;a plurality of waveguides formed in the substrate and positioned in a plane;a plurality of lasers coupled to the waveguides and configured to produce light having wavelengths that are different from one another;at least one coupler positioned in the plane and configured to couple light from the lasers out of the waveguides to form multi-wavelength light in a different plane;an emission lens configured to direct the multi-wavelength light toward an object, andat least one detector positioned in the plane and configured to detect at least a portion of returning light that is returned from the object.2. The photonic integrated circuit of claim 1 , wherein the returning light is reflected or scattered from the object.3. The photonic integrated circuit of claim 1 , further comprising circuitry configured to analyze at least one signal from the at least one detector to determine a physical property of the object at the wavelengths.4. The photonic integrated circuit of claim 1 , wherein each waveguide includes a resonant cavity claim 1 , and each laser includes non-silicon gain material coupled to a ...

Multi-element simultaneous analysis atomic absorption spectroscopy photometer and multi-element simultaneous analytic method

Incident slits and exit slits are provided separately on corresponding optical axes incident simultaneously on a spectroscope from a sample atomizing unit. A mechanism for changing the widths of the respective incident slits and exiting slits is provided such that the slit widths optimal to the respective elements to be measured are set on the corresponding optical axes to thereby realize high sensitivity analysis of all the elements to be measured simultaneously.

OPTICAL SENSOR DEVICE, COLORIMETRIC DEVICE, AND IMAGE FORMING APPARATUS

An optical sensor device includes a first light source, a second light source, a sensor, and control circuitry. The first light source has a plurality of peak wavelengths in a wavelength range of 400 nm to 780 nm. The second light source emits ultraviolet light. The control circuitry adjusts a light amount of the first light source based on an output of the sensor in a state the first light source is on and the second light source is off, adjusts a light amount of the second light source based on an output of the sensor in a state the second light source is on and the first light source is off, and acquires a correction value of data output by the sensor, based on an output of the sensor in a state each of the first and second light sources is on with the light amount adjusted.

Wearable device coupled to time-of-flight imaging system

An optical system measures one or more physiological parameters with a wearable device that includes a light emitting diode (LED) source including a driver and a plurality of semiconductor sources that generate an output optical light. One or more lenses deliver a lens output light to tissue of a user. A detection system receives at least a portion of the lens output light reflected from the tissue and generates an output signal having a signal-to-noise ratio. The detection system comprises a plurality of spatially separated detectors and an analog to digital converter. The detection system increases the signal-to-noised ratio by comparing a first signal with the LEDs off to a second signal with the LEDs on. An imaging system including a Bragg reflector is pulsed and has a near infrared wavelength. A beam splitter splits the light into a sample arm and a reference arm to measure time-of-flight.

КОНТРОЛЬНО-ИЗМЕРИТЕЛЬНОЕ УСТРОЙСТВО С ЦВЕТНЫМ ОСВЕЩЕНИЕМ

Изобретение относится к области оптического контроля тары. Способ проверки резервуаров на загрязнения и трехмерные структуры резервуара включает предоставление источника излучения, причем источник излучения способен испускать излучение, которое просвечивает исследуемый резервуар, причем источник излучения содержит несколько пространственно разделенных зон излучения, способных испускать излучение разных диапазонов длин волн. Также способ включает предоставление детектора, способного обнаруживать излучение, которое было испущено источником излучения и прошло через резервуар, и предоставление устройства обработки данных, которое способно оценивать излучение, обнаруженное детектором, на загрязнения и повреждения резервуара. При этом осуществляют обнаружение излучения детектором, причем излучение было испущено зонами излучения источника излучения и прошло через исследуемый резервуар, и оценку устройством обработки данных излучения, обнаруженного детектором, на загрязнение и повреждения исследуемого ...

Wireless, disposable, extended use pulse oximeter apparatus and methods

Apparatus and methods provide wireless, disposable, continuous pulse oximeter sensor technology, useful and beneficial for a number of applications including relatively extended periods of data collection, and/or packaged in compact and easy-to-use assemblies. Economic fabrication and use provides flexible methodologies that can reduce the overall costs of monitoring and collecting patient's physiological data, and provide relatively greater ease and comfort to the patient. A disposable wireless continuous pulse oximeter sensor has a reduced emitter-detector separation, a low-power frontend, and a low-cost processor that sends waveforms to a host device so that the host can calculate and display the parameters of interest. Complications created by the reduced distance between emitter and detector are minimized by using an emitter-detector assembly with an optically dark background, and a bandage for improved optical compliance.

Spectral excitation device

NON-INVASIVE MULTIFUNCTIONAL TELEMETRY APPARATUS AND REAL-TIME SYSTEM FOR MONITORING CLINICAL SIGNALS AND HEALTH PARAMETERS

Multifunctional wireless apparatus, spectrometry instruments, real-time computational system and device ergonomic forms for live and telemetry monitoring of clinical parameters, health data and other vital medical information. Clinical parameters and medical information include pulse rate, respiratory rate, continuous blood glucose levels, continuous blood pressure levels, pulse rate variability, oxygen saturation ratio, body temperature, bio-electrical activity, sleep patterns, sleep health and other vital bio -signal data. The telemetry apparatus encompasses electrical and optical spectrometer instruments. The spectrometer designs and its accompanying circuit design ensure that device is bio-safe, lightweight, low-powered and portable. The biosensor configuration, comprehensive hardware design, computational process and ergonomic design enables the measurement with more accuracy and efficiency, even in movement artefact prone conditions. The system design also assures that the computational ...

METHOD AND APPARATUS FOR SPECTRAL REFLECTANCE IMAGING USING DIGITAL CAMERAS

A method and spectral light-based apparatus with an embedded (built-in) spectral calibration module for acquiring multi-spectral reflectance images from a digital camera are disclosed. The apparatus may be an attachment device, which may be integrated with a consumer digital camera (such as smartphone camera), and may measure and/or estimate spectral reflectance and true color values for an object recorded by the camera. An example apparatus comprises an array of monochromatic light sources, preferably pulsed LEDs, irradiating in a time-multiplexed manner to generate light spectra in the range of 400 nm - 1000 nm, an optical lens to limit the field of view of the attached camera, an electro-mechanical shutter or plate with its inner (reflection) surface coated with a diffuse reflectance standard to ensure flat spectral response, and an interface module for synchronizing the time-multiplexed light spectra with the coated shutter opening and closing and with the digital frames acquired by ...

ILLUMINATION DEVICE FOR SPECTRAL IMAGING

An illumination system incorporating a multi-faceted mirror in operative communication with an array of discrete illumination sources. The multi-faceted mirror may accept incident light beams from discrete illumination sources located at different positions and then deliver a reflected output to a common location for direct acceptance by an optical/imaging device or by a light guide transmission device operatively connected to a downstream optical/imaging device. Individual light sources may be selected and/or combined in a defined sequence by selectively activating and deactivating such light sources electronically with no need for moving parts. By pulsing different illumination sources, the optical/imaging system may be provided with a feed of narrow-band illumination for use in imaging. Outputs from several illumination sources can also be combined if desired to produce a custom-tuned illumination spectrum for a particular application.

SPECTROMETER WITH LED ARRAY

The invention proposes an apparatus (110) for determining at least one optical property of a sample (112). The apparatus (110) comprises a tunable excitation light source (114; 410) for applying excitation light (122) to the sample (112). The apparatus (110) also comprises a detector (128, 130; 312) for detecting detection light (132, 136; 314) coming from the sample (112). The excitation light source (114; 410) comprises a light-emitting diode array (114) which is at least partially in the form of a monolithic light-emitting diode array (114). The monolithic light-emitting diode array (114) comprises at least three light-emitting diodes (426) each with a different emission spectrum.

Method and apparatus for determining siloxane content of a gas

광학 기반 전기 신호 동시 일관 수신 시스템 및 방법

... 표본의 광학 특성을 측정하기 위한 시스템이 개시된다. 본 시스템은 표본의 특성 측정과 관련된 신호를 샘플링하고, 소프트웨어 기반의 일관(coherent) 검출을 수행하여 실질적으로 동일한 시간에 획득된 신호에 기초한 측정 결과를 생성하도록 구성된다. 이를 통해 실시간으로 원하는 측정값을 표시하거나 생성할 수도 있다. 한 구성에서, 본 시스템은 표본 상에 입사하는 선택된 파장에서 변조된 광신호를 지향하도록 구성된다. 다른 구성에서, 본 시스템은 표본 상에 상이한 파장의 복수의 광신호로부터 도출되고 또한 상이한 주파수로 변조되는, 결합된 광신호를 지향하도록 구성된다. 또 다른 구성에서, 본 시스템은 표본의 상이한 영역들 상에 입사하는 상이한 주파수로 변조된 복수의 광신호를 지향하도록 구성된다.

CHROMATOGRAPHY SYSTEM WITH LED-BASED LIGHT SOURCE

A detector system having a single emitter body. The emitter body has a plurality of light emitting diodes (LEDs) for emitting a plurality of wavelengths. Each LED adapted to emit a different wavelength of light. A broadband filter is adapted to receive the plurality of wavelengths. A detector arrangement adapted to receive the plurality of wavelengths filtered by the broadband filter. A controller adapted to control the plurality of LEDs and detector arrangement.

Measuring device

A measuring device includes: an irradiator that irradiates electromagnetic waves to an inspection object; a light collector having a reflecting surface that guides, to a light-collecting surface, electromagnetic waves whose incident angle with respect to an incident end facing the inspection object is within a predetermined angle, among the electromagnetic waves that have been transmitted through the inspection object; and a detector that detects the electromagnetic waves guided to the light-collecting surface. The measuring device measures a characteristic of the inspection object based on the detected electromagnetic waves.

SYSTEM FOR RAPID ASSESSMENT OF WATER QUALITY AND HARMFUL ALGAL BLOOM TOXINS

The present invention is directed toward the early detection of harmful algal blooms. The system employs the ability of whole cell non-contact micro Raman spectroscopy to detect cell pigmentation in such a way that distinct patterns or fingerprints can be assembled. Light field microscopy will provide a fundamentally innovative increase in image and sample volume. Furthermore, darkfield microscopy is employed to capture high-resolution, color images of the detected plankton to increase the accuracy of species identification and classification. Together, this new instrument will provide a powerful yet elegantly simple solution to detection of HAB cells and characterization of environmental conditions. 2. The device of further comprising a light source claim 1 , disposed distal to the image face capable of producing two or more primary light beams which do not intersect with the image face of the lens wherein said primary beams interact with a target in the target space to produce a secondary light beam which impinges on the distal face of the lens.3. The device of further comprising a connection means connecting said light source to the housing of the optical system at a distance away from said optical system.4. The device of claim 1 , wherein the optical system further comprises a darkfield optical assembly adapted for imaging the target.5. The device of claim 1 , wherein the Raman spectroscopic assembly comprises a spectrometer claim 1 , an optical splitter claim 1 , and a laser adapted to impinge the target.6. The device of claim 1 , wherein the lens is an infinity corrected lens.7. The device of claim 1 , wherein the light source comprises one or more light-emitting sources capable of emanating primary light beams onto a target.8. The device of claim 7 , wherein each light-emitting source emanates light selected from the group comprising monochromatic light claim 7 , polychromatic light claim 7 , white light claim 7 , red light claim 7 , ultraviolet light claim 7 ...

Raman probe and bio-component analyzing apparatus using the same

Provided are a Raman probe and a bio-component analyzing apparatus using the same. The Raman probe according to an embodiment of the present disclosure may include: a probe head having a concave part configured to receive skin of an object being inserted into the concave part when the probe head comes into contact with the skin of the object; a light source part configured to emit light onto the skin inserted into the concave part; and a light collector formed above the concave part and configured to collect Raman scattered light from the skin inserted into the concave part. The light source part may be disposed on a side of at least one of the light collector and the concave part.

Spectral Lighting Modeling and Control

Spectral irradiance distributions are calculated within a virtual environment based on arbitrary light source spectral power distributions. Architectural, horticultural and aquacultural lighting control systems use the calculated results to control both the intensity and spectral power distribution of the electric light sources. Energy consumption may be minimized while maintaining optimal occupant visual comfort and plant health.

A detector system comprising a plurality of light guides and a spectrometer comprising the detector system

A detector system (100) comprising a plurality of light guides (11a, 11b, 11c, 11d) is provided. Each light guide (11a, 11b, 11c, 11d) is guiding incoming light from a respective object in use, wherein the incoming light is provided by means of an illuminating means (10). The detector system (100) comprises diffracting means (12) for diffracting the incoming light in different wavelength ranges, at least one focuser (13) for projecting the incoming light exiting the light guides onto the diffracting means, a detector (14) having a detector area for receiving the diffracted light from the plurality of Sight guides, and a control unit (15). These are arranged to pulsate incoming light via only one light guide at a time based on a pulse timing parameter, and record a spectrum of light diffracted from each light guide and detected by the detector (14) based on the pulse timing parameter.

APPARATUS FOR ANALYZING A MEDIA, AND ASSOCIATED EGG IDENTIFICATION APPARATUS AND METHOD

An apparatus for interrogating a media to be analyzed, such as an avian egg (1), is provided. Such an apparatus (160) includes an emitter assembly (200) configured to emit light toward a media. The emitter assembly has a first emitter source (210) configured to emit a first light signal and a second emitter source (220) configured to emit a second light signal. The first and second light signals are transmitted through the media in phase quadrature. A detector assembly is configured to detect the first and second light signals transmitted through the media. The detector assembly (300) is further configured to resolve a relative or absolute amplitude of each of the first and second light signals. A processor (600) is configured to process the detected signal to identify a property of the media using at least one of the relative and absolute amplitudes of the first and second light signals. An associated method is also provided.

APPARATUS AND METHOD FOR DETERMINING SPECTRAL INFORMATION

Embodiments of the present invention provide an apparatus for determining spectral information of a three-dimensional object, comprising a cavity (110) for location in relation to the object, an imaging light source (120) located in relation to the cavity, wherein the imaging source is controllable to selectively emit light in a plurality of wavelength ranges, structured light source (130) for emitting structured illumination toward the object, wherein the structured light source comprises a plurality of illumination devices arranged around the cavity, one or more imaging devices (140) for generating image data relating to at least a portion of the object, a control unit, wherein the control unit (1100) is arranged to control the structured light source to emit the structured illumination and to control the imaging light source to emit light in a selected one or more of the plurality of wavelength ranges, a data storage unit (1120) arranged to store image data corresponding to the structured ...

TUNABLE OPTICAL RECEIVER

An embodiment of the disclosure provides a system for determining information on one or more constituents in a medium. The system includes N light emitters L 1 ...L N , wherein each light emitter L x provides an amplitude modulated (AM) light at modulation frequency f x into a flow path of the medium from one side of a containment vessel for the medium. The system further includes a photodetector, for receiving the AM light from each light emitter after it passes through the flow path of the medium, and converting the AM light to an electrical signal characterized by a summation of frequency components from each modulation frequency f x . The system further includes one or more measuring circuits providing information about a concentration of one or more constituents in the medium determined from log ratios of a pair of amplitudes of f y and f z frequency components in the electrical signal.

A DEVICE FOR OPTICALLY MEASURING FLUORESCENCE OF NUCLEIC ACIDS IN TEST SAMPLES AND USE OF THE DEVICE

The invention relates to a device (12; 72) for optically measuring fluorescence of nucleic acids in test samples (14). The device (12; 72) comprises a plurality of sample wells (32) each for receiving an upright sample tube (16) made of a transparent material, having a side wall (20) and a bottom end (22) and containing one of the test samples (14) together with at least one fluorescent dye, at least one excitation light source (24; 74, 76, 78, 80) disposed in the vicinity of each sample well (32) for directing an excitation light beam through the side wall (20) of the sample tube (16) into the test sample (14) for exciting the dye, and an optical fluorescence detector (28) disposed underneath the bottom end (22) of each sample tube (16) for capturing fluorescence emitted from the dye in the test sample (14) upon excitation.

A DEVICE FOR OPTICALLY MEASURING FLUORESCENCE OF NUCLEIC ACIDS IN TEST SAMPLES AND USE OF THE DEVICE

The invention relates to a device (12; 72) for optically measuring fluorescence of nucleic acids in test samples (14). The device (12; 72) comprises a plurality of sample wells (32) each for receiving an upright sample tube (16) made of a transparent material, having a side wall (20) and a bottom end (22) and containing one of the test samples (14) together with at least one fluorescent dye, at least one excitation light source (24; 74, 76, 78, 80) disposed in the vicinity of each sample well (32) for directing an excitation light beam through the side wall (20) of the sample tube (16) into the test sample (14) for exciting the dye, and an optical fluorescence detector (28) disposed underneath the bottom end (22) of each sample tube (16) for capturing fluorescence emitted from the dye in the test sample (14) upon excitation.

Physiological measurement device using light emitting diodes

A wearable device includes a measurement device adapted to be placed on a wrist or ear having a light source with LEDs to measure physiological parameters. The measurement device generates an optical beam having a near infrared wavelength between 700-2500 nanometers by modulating the LEDs, and lenses to deliver the beam to tissue, which reflects the beam to a receiver having spectral filters in front of spatially separated detectors coupled to analog to digital converters that generate at least two receiver outputs. Signal-to-noise ratio of the beam reflected from the tissue is improved by comparing the receiver outputs, and by increasing light intensity from the LEDs. The receiver is synchronized to the modulation of the LEDs and uses a lock-in technique that detects the modulation frequency. The measurement device generates an output signal representing a non-invasive measurement on blood within the tissue.

METHOD AND SYSTEM FOR IDENTIFICATION OF PHOSPHORS

Disclosed is a system and method for interrogating a photo-responsive material, such as for authentication purposes, utilizing a light source to illuminate a photo-responsive material, a detector to capture an emission from the photo-responsive material, and a processor to receive a response from the detector while the photo-responsive material is being illuminated after a maximum response has been received, then measuring a change in the received response.

Mobile gas and chemical imaging camera

In one embodiment, an infrared (IR) imaging system for determining a concentration of a target species in an object is disclosed. The imaging system can include an optical system including an optical focal plane array (FPA) unit. The optical system can have components defining at least two optical channels thereof, said at least two optical channels being spatially and spectrally different from one another. Each of the at least two optical channels can be positioned to transfer IR radiation incident on the optical system towards the optical FPA. The system can include a processing unit containing a processor that can be configured to acquire multispectral optical data representing said target species from the IR radiation received at the optical FPA. Said optical system and said processing unit can be contained together in a data acquisition and processing module configured to be worn or carried by a person.

SPECTROSCOPE

PULSED ILLUMINATION IN A FLUORESCENCE IMAGING SYSTEM

CHROMATISCHER KONFOKALSENSOR UND MESSVERFAHREN

Ein chromatischer Konfokalsensor umfasst: einen Lichtquellenabschnitt, der mehrere Lichtstrahlen mit unterschiedlichen Wellenlängen abgibt; mehrere Optikköpfe, die die mehreren Lichtstrahlen, die vom Lichtquellenabschnitt abgegeben werden, an unterschiedlichen Fokuslagen konvergieren und Messlicht abgeben, das von einem Messpunkt an den Fokuslagen reflektiert wird; ein Spektrometer, das einen Zeilensensor und ein optisches System umfasst, das ein Beugungsgitter umfasst, das mehrere Messlichtstrahlen beugt, die von den mehreren Optikköpfen abgegeben werden, und jeden der mehreren Messlichtstrahlen, die vom Beugungsgitter gebeugt werden, an mehrere verschiedene Licht empfangende Bereiche des Zeilensensors abgibt; und einen Positionsberechnungsabschnitt, der eine Position mehrerer Messpunkte als ein Messziel der mehreren Optikköpfe aufgrund einer Licht empfangenden Position der Licht empfangenden Bereiche des Zeilensensors berechnet.

Device for combining beams of different wavelength

A device for combining beams (1, 2, 3) of different wavelength ( nu 1, nu 2, nu 3) in a common measuring beam path (6) is described which exhibits a concave diffraction grating (4) as beam combiner. ...

COMBINATION EMITTER AND CAMERA ASSEMBLY

MULTI-ELEMENT SIMULTANEOUS ANALYSIS ATOMIC ABSORPTION SPECTROSCOPY PHOTOMETER AND MULTI-ELEMENT SIMULTANEOUS ANALYTIC METHOD

For micro-imaging an object apparatus, system and method

METHOD AND APPARATUS FOR THE MONITORING AND CONTROL OF COMBUSTION

A sensing apparatus consisting of more than one diode laser having select lasing frequencies, a multiplexer optically coupled to the outputs of the diode lasers with the multiplexer being further optically coupled to a pitch side optical fiber. Multiplexed laser light is transmitted through the pitch side optical fiber to a pitch optic operatively associated with a process chamber which may be a combustion chamber or the boiler of a coal or gas fired power plant. The pitch optic is oriented to project multiplexed laser output through the process chamber. Also operatively oriented with the process chamber is a catch optic in optical communication with the pitch optic to receive the multiplexed laser output projected through the process chamber. The catch optic is optically coupled to an optical fiber which transmits the multiplexed laser output to a demultiplexer. The demultiplexer demultiplexes the laser light and optically couples the select lasing frequencies of light to a detector with ...

AEROSOL GENERATOR SYSTEM WITH TES FOR ANALYSIS OF THE AEROSOL

La presente se refiere a un dispositivo generador de aerosol portátil. El dispositivo generador de aerosol portátil comprende un emisor (2), configurado para emitir luz. Adicionalmente, el dispositivo generador de aerosol portátil comprende un sensor (4), configurado para recibir luz y una cámara de aerosol (8), configurada para comprender un aerosol. El emisor se configura además para emitir luz hacia la cámara de aerosol. El sensor además se configura para recibir luz desde la cámara de aerosol y medir al menos una longitud de onda del espectro de la luz recibida.

FLUORESCENCE FILTERING SYSTEM AND METHOD FOR MOLECULAR IMAGING

An optical system is disclosed that can be used for fluorescence filtering for molecular imaging. In one preferred embodiment, a source subsystem is disclosed comprising a light source and a first set of filters designed to pass wavelengths of light in an absorption band of a fluorescent material. A detector subsystem is also disclosed comprising a light detector, imaging optics, a second set of filters designed to pass wavelengths of light in an emission band of the fluorescent material, and an aperture located at a front focal plane of the imaging optics. A telecentric space is created between the light detector and the imaging optics, such that axial rays from a plurality of field points emerge from the imaging optics parallel to each other and perpendicular to the second set of filters.

ANALYSIS SYSTEM AND METHOD

An analysis system (101, 102) detects multiple radiation outputs from a sample (400) being analyzed. A radiation source (101, 102) generates input radiation comprising frequency components in multiple frequency bands, with the frequency components being independently controllable. A plurality of detectors (701, 702) are used and a (fixed) filter arrangement (601, 602) with multiple pass bands is associated with each detector. The detector signals can be processed to determine the levels of output radiation from the sample at a plurality of frequencies greater in number than the number of detectors, without having to move any filters.

SHORT-WAVE INFRARED SUPER-CONTINUUM LASERS FOR EARLY DETECTION OF DENTAL CARIES

A wearable device for use with a smart phone or tablet includes LEDs for measuring physiological parameters by modulating the LEDs and generating a near-infrared multi-wavelength optical beam. At least one LED emits at a first wavelength having a first penetration depth and at least another LED emits at a second wavelength having a second penetration depth into tissue. The device includes lenses that deliver the optical beam to the tissue, which reflects the first and second wavelengths. A receiver is configured to capture light while the LEDs are off and while at least one of the LEDs is on and to difference corresponding signals to improve a signal-to-noise ratio of the optical beam reflected from the tissue. The signal-to-noise ratio is further increased by increasing light intensity of at least one of the LEDs. The device generates an output signal representing a non-invasive measurement on blood within the tissue. 1. A wearable device for use with a smart phone or tablet , the wearable device comprising:a measurement device including a light source comprising a plurality of light emitting diodes (LEDs) for measuring one or more physiological parameters, the measurement device configured to generate, by modulating at least one of the LEDs having an initial light intensity, an optical beam having a plurality of optical wavelengths, wherein at least one of the LEDs emits at a first wavelength having a first penetration depth into tissue and at least another of the LEDs emits at a second wavelength having a second penetration depth into the tissue different from the first penetration depth, wherein at least a portion of the optical beam includes a near-infrared wavelength between 700 nanometers and 2500 nanometers;the measurement device comprising one or more lenses configured to receive and to deliver at least a portion of each of the first and of the second wavelengths to tissue, wherein the tissue reflects at least a portion of each of the first and of the ...

Fluorescence measurement of samples

In accordance with particular implementations of the invention described herein, a sample for analysis is illuminated under each of one or more narrow-band light sources. The light incident upon this sample is received by a sensor that generates measurement data in response thereto. One or more processors are configured to receive the measurement data and derive an excitation response curve and a fluorescent response curve from the measurement data. The processor is further configured to generate a fluorescent profile value using measurements from the fluorescent response curve for each of the captured narrow band measurement data and an excitation profile value corresponding to the area under the fluorescence curve divided by the area under the excitation curve. The generated fluorescent profile and excitation profile are both output as a dataset providing improved measurement values over similar approaches in the art.

Device for checking color of e.g. spectacle lens, has illumination device radiates light optionally with spectral distributions for illuminating glasses, and image pickup device defines spectral distributions as spectral sensitivities

The device (10) has image pickup device (30) for spectral distributions of luminance data emitted from a radiation surface (16) of illumination device through glass to be checked (12). Analysis module (40) determines local color density values for dye from local transmission values. An image output device (42) outputs a graphic illustration of distribution of local dye density values for dye. Illumination device radiates light optionally with spectral distributions for illuminating glasses. Another image pickup device defines the spectral distributions as spectral sensitivities. An independent claim is included for method for checking the color of glass.

Apparatus and method for determining spectral information

Tunable optical receiver

An embodiment of the disclosure provides a system for determining information on one or more constituents in a medium. The system includes ...

A detection system for detecting matter and distinguishing specific matter from other matter

The present disclosure provides a detection system for detecting matter and distinguishing specific matter from other matter. The detection system comprises a spectral analysis system configured to at least assist in determining whether matter comprises the specific matter based on an intensity of light reflected from the specific matter. The spectral analysis system comprises a light source capable of emitting light having at least one known wavelength or wavelength range. Further, the spectral analysis system comprises an optical element for directing the emitted light towards the matter. The spectral analysis system also comprises a detector for detecting light reflected from the matter and a spatial analysis stem. The spatial analysis system is configured to at least assist in determining whether the matter comprises the specific matter based on a shape of the matter. The spatial analysis system comprising an image capturing device for capturing an image of the matter. Further, the ...

METHOD AND APPARATUS FOR LIGHT-WEIGHT, NON-INVASIVE, POINT OF CARE DIABETES SCREENING DEVICE

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. 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.

Spectrum measuring apparatus for mover

Disclosed is a mover spectrum measuring apparatus, which is able to discriminate an object being measured more reliably by relieving the influences of an environmental light on photographic data by a spectrum sensor mounted on a mover such as a vehicle. A spectrum sensor capable of measuring wavelength information and optical intensity information is mounted on a vehicle, so that an object being measured around the vehicle is discriminated on the basis of the spectrum data relating to the observation light detected by the spectrum sensor. The mover spectrum measuring apparatus comprises an illumination device for making variable the featuring quantity of at least either the wavelength range of the observation light or the optical intensity of each wavelength, and controls the featuring quantity varying mode by the illumination device through an illumination controller on the basis of the control value according to an environmental element.

SCANNING PROBE HAVING MICRO-TIP, METHOD AND APPARATUS FOR MANUFACTURING THE SAME

The present disclosure provides a scanning probe, a method and an apparatus for manufacturing the scanning probe. The scanning probe includes a base and a micro-tip disposed on an end of the base, wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix. In the method, an end of a probe precursor is immersed in a corrosive solution by having a length direction of the probe precursor inclined with a liquid surface of the corrosive solution. The probe precursor is corroded by the corrosive solution while a corrosion current of the corroding is monitored. The probe precursor is moved away from the corrosive solution after a magnitude of the corrosion current has a plunge. The apparatus includes a container containing the corrosive solution, and a driving device configured to move the probe precursor in the container through a fastener. 1. A scanning probe comprising:a base; anda micro-tip disposed on an end of the base,wherein at least a section of the micro-tip comprises a lateral surface with a concavely curved generatrix; and the micro-tip comprises diameter-changing sections, and the micro-tip comprises a converged lateral tip, a converged lateral edge, or a combination thereof disposed between the diameter-changing sections.2. The scanning probe of claim 1 , wherein the diameter-changing sections comprises a first diameter-changing section claim 1 , a second diameter-changing section claim 1 , and a distal section.3. The scanning probe of claim 2 , wherein two opposite ends of the second diameter-changing section respectively connect the first diameter-changing section and the distal section.4. The scanning probe of claim 3 , wherein the first diameter-changing section is adjacent to the base claim 3 , and the second diameter-changing section is adjacent to the distal section.5. The scanning probe of claim 2 , wherein the distal section has a ball shape or an ellipsoid shape.6. The scanning probe of claim 1 , ...

Surgical visualization with proximity tracking features

A surgical visualization system is disclosed. The surgical visualization system is configured to identify one or more structure(s) and/or determine one or more distances with respect to obscuring tissue and/or the identified structure(s). The surgical visualization system can facilitate avoidance of the identified structure(s) by a surgical device. The surgical visualization system can comprise a first emitter configured to emit a plurality of tissue-penetrating light waves and a second emitter configured to emit structured light onto the surface of tissue. The surgical visualization system can also include an image sensor configured to detect reflected visible light, tissue-penetrating light, and/or structured light. The surgical visualization system can convey information to one or more clinicians regarding the position of one or more hidden identified structures and/or provide one or more proximity indicators.

Photodetection apparatus including optical filter and optical detector

In one aspect, an apparatus includes a first light source that applies first light having a first wavelength as a center wavelength to an object, a second light source that applies second light having a second wavelength as a center wavelength longer than the first wavelength to the object, an optical filter that includes first and second regions and that transmits third light produced by the first and second light each passed through or reflected by the object, first and second optical detectors that determine first and second amounts, respectively, of the third light passed through the first and second regions. The transmission ranges of spectral transmission curves of the first and second regions are located between the first wavelength and the second wavelength. The spectral transmission curve of the first region has a width at half maximum different from that of the spectral transmission curve of the second region.

System for matching coarseness appearance of coatings

Systems and method for matching appearance of a target coating on a substrate is provided herein. The system includes a coating chip including a chip coating layer. The chip coating layer has a chip coarseness. The system further includes an illumination component configured to illuminate the chip coating layer with a light having an illumination color. The chip coating layer exhibits the chip coarseness and the illumination color in the presence of the light having the illumination color. The chip coating layer exhibiting the chip coarseness and the illumination color is utilized for matching the appearance of the target coating.

Near-infrared time-of-flight imaging using laser diodes with bragg reflectors

A remote sensing system includes an array of laser diodes configured to generate light. One or more scanners are configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to an object. A detection system is configured to receive at least a portion of light reflected from the object and is configured to be synchronized to the at least a portion of the array of laser diodes comprising Bragg reflectors. The remote sensing system is configured to generate a two-dimensional or three-dimensional mapping using at least a portion of a time-of-flight measurement. The remote sensing system is adapted to be mounted on a vehicle and communicate with a cloud. The at least a portion of the two-dimensional or three-dimensional mapping is combined with global positioning system information.

HETEROGENEOUS SPECTROSCOPIC TRANSCEIVING PHOTONIC INTEGRATED CIRCUIT SENSOR

Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object. 1. A photonic integrated circuit , comprising:a plurality of waveguides positioned in a plane, each waveguide configured to deliver monochromatic light having a wavelength that differs from the wavelengths of the monochromatic light from the other waveguides;at least one coupler positioned in the plane and configured to direct the light from the waveguides out of the plane to form multi-wavelength light;an emission lens configured to direct the multi-wavelength light toward an object; andat least one detector positioned in the plane and configured to detect at least a portion of returning light that is returned from the object.2. The photonic integrated circuit of claim 1 , wherein the returning light is reflected or scattered from the object.3. The photonic integrated circuit of claim 1 , further comprising circuitry configured to analyze at least one signal from the at least one detector to determine a physical property of the object at the wavelengths.4. The photonic integrated circuit of claim 1 , wherein each waveguide includes a resonant cavity claim 1 , and each laser includes non-silicon gain material coupled to a corresponding resonant cavity.5. The ...

Optical head and measuring apparatus

An optical head includes a first module that concentrates pump light and Stokes light on a first point; a second module that collects CARS light from the first point; and a third module that supports the first module and the second module. The first module includes: a high rigidity first frame; and a first optical system including a plurality of optical elements fixed to the first frame. The second module includes: a high rigidity second frame; and a second optical system including a plurality of optical elements fixed to the second frame. The third module includes a high rigidity third frame that fixes the first frame and the second frame.

Inspection device with colour lighting

A device and a method for inspecting containers for impurities and three-dimensional container structures comprising a radiation source. The radiation source is designed to emit radiation that radiates through a container to be examined. The device also comprises a detection element designed to detect the radiation that has been emitted by the radiation source and has radiated through the container. The device further comprises an evaluation element designed to evaluate the radiation detected by the detection element in terms of dirt and damage to the container. The radiation source has a plurality of spatially separated radiation zones. The radiation zones of the radiation source are designed to emit radiation of different wavelength ranges or of a different intensity.

Flow Cell Modules and Liquid Sample Analyzers and Methods Including Same

A liquid sample analyzer includes a liquid sample source, a flow cell, an optical device and a plurality of optical fibers. The flow cell is configured to receive a flow of a liquid sample from the liquid sample source. The plurality of optical fibers optically connect the flow cell to the optical device to transmit light between the flow cell and the optical device.

Spectrometer including tunable on-chip laser and spectrum measurement method

A spectrometer may include: a tunable on-chip laser source configured to irradiate a biological tissue with laser radiation; a photodetector configured to receive the laser radiation reflected from the biological tissue; and at least one processor. The tunable on-chip laser source may include: a semiconductor gain chip having a gain bandwidth for operating the tunable on-chip laser source in a predetermined wavelength range; and a plurality of resonator cavities connected between the semiconductor gain chip and the at least one processor, and configured to perform a coarse high-speed measurement and a fine measurement to measure a spectrum of the laser radiation reflected from the biological tissue.

AUTHENTICATING DEVICE

An authenticating device is used for optically authenticating a testing area of a first surface of a valuable document. The valuable document defines a normal perpendicular to the first surface and a datum penetrating the normal and two sides of the valuable document. The datum and the first surface collectively define a first area and a second area adjacent to the first area. The authenticating device includes a first light emitting unit, a second light emitting unit, and a light receiving component. The first light emitting unit is arranged within the first area. The second light emitting unit is arranged within the first area. The light receiving component is arranged within the second area. The first light emitting unit and the second light emitting unit emit light to the testing area in sequence for authenticating the variable document. 1. An authenticating device used for optically authenticating a testing area of a valuable document , the testing area located on a first surface of the valuable document , the valuable document defining a normal perpendicular to the first surface and a datum penetrating the normal and two sides of the valuable document , the datum and the first surface collectively defining a first area and a second area adjacent to the first area , the authenticating device comprising:a first light emitting unit arranged within the first area, a first angle spanning between an optical axis of the first light emitting unit and the normal;a second light emitting unit arranged within the first area, a second angle spanning between an optical axis of the second light emitting unit and the normal, the second angle being larger than the first angle;a light receiving component arranged within the second area, a third angle spanning between an optical axis of the light receiving component and the normal; anda controller electrically connected to the first light emitting unit and the second light emitting unit, the controller configured to control the ...

FAST COMPUTATIONAL PHASE AND TIMING CORRECTION FOR MULTIHETERODYNE SPECTROSCOPY

Disclosed herein is an all-digital phase and timing correction procedure for coherent averaging in dual-comb and multiheterodyne spectroscopy—applicable to any dual-comb spectroscopy setup. It can account for large frequency/phase instabilities of the used sources, yielding a significant reduction of the noise pedestal and an increase in signal-to-noise ratio (SNR) of the radio frequency (RF) beat notes. This technique is computationally efficient and can be conveniently implemented either as a post-processing algorithm or in a real-time data acquisition and processing platform without the necessity of adding any additional optical elements to the dual-comb spectroscopy system. By implementing this technique, the performance of any comb- or comb-like-source-based DCS system with a sufficient degree of mutual coherence between the optical modes can be improved in terms of SNR and number of spectroscopically-usable RF beat notes. The described technique is compatible with a DC-centered RF spectrum, where the negative frequencies are folded to the positive domain to double the number of beat notes within the detector bandwidth. The technique enables coherent averaging over extended time-scales even for free-running combs, thus increasing the sensitivity of absorption and dispersion DCS measurements. 1. A multiheterodyne spectroscopy (MHS) or dual-comb spectroscopy (DCS) system including a sample being a liquid , gaseous , or solid form substance , the system comprising:a first laser light source and a second laser light source;the first laser light source generating a first light beam having a first optical path and being directed toward a first beam splitter/combiner that creates two light beams, one directed toward the sample and the other directed toward a second beam splitter/combiner, resulting in a pre-sample first laser light beam and a post-sample first laser light beam, respectively;the second laser light source generating a second light beam having a second ...

Illumination and detection apparatus for a metrology apparatus

An illumination and detection apparatus for a metrology tool, and associated method. The apparatus includes an illumination arrangement operable to produce measurement illumination having a plurality of discrete wavelength bands and having a spectrum having no more than a single peak within each wavelength band. The detection arrangement includes a detection beamsplitter to split scattered radiation into a plurality of channels, each channel corresponding to a different one of the wavelength bands; and at least one detector for separate detection of each channel.

OPTICAL DEVICE

In an optical device, a base and a movable unit are constituted by a semiconductor substrate including a first semiconductor layer, an insulating layer, and a second semiconductor layer in this order from one side in a predetermined direction. The base is constituted by the first semiconductor layer, the insulating layer, and the second semiconductor layer. The movable unit includes an arrangement portion that is constituted by the second semiconductor layer. The optical function unit is disposed on a surface of the arrangement portion on the one side. The first semiconductor layer that constitutes the base is thicker than the second semiconductor layer that constitutes the base. A surface of the base on the one side is located more to the one side than the optical function unit. 1. An optical device comprising:a base that includes a main surface;a movable unit that is supported in the base to be movable along a predetermined direction that intersects the main surface; andan optical function unit that is disposed on the movable unit,wherein the base and the movable unit are constituted by a semiconductor substrate that includes a first semiconductor layer, an insulating layer, and a second semiconductor layer in this order from one side in the predetermined direction,the base is constituted by the first semiconductor layer, the insulating layer, and the second semiconductor layer,the movable unit includes an arrangement portion that is constituted by the second semiconductor layer,the optical function unit is disposed on a surface of the arrangement portion on the one side,the first semiconductor layer that constitutes the base is thicker than the second semiconductor layer that constitutes the base, anda surface of the base on the one side is located more to the one side than the optical function unit.2. The optical device according to claim 1 ,wherein the movable unit further includes a rib portion that is disposed at the periphery of the optical function unit,the ...

Mirror unit and optical module

A mirror unit 2 includes a mirror device 20 including a base 21 and a movable mirror 22, an optical function member 13, and a fixed mirror 16 that is disposed on a side opposite to the mirror device 20 with respect to the optical function member 13. The optical function member 13 is provided with a light transmitting portion 14 that constitutes a part of an optical path between the beam splitter unit 3 and the fixed mirror 16. The light transmitting portion 14 is a portion that corrects an optical path difference that occurs between an optical path between the beam splitter unit 3 and the movable mirror 22 and the optical path between the beam splitter unit 3 and the fixed mirror 16. The second surface 21b of the base 21 and the third surface 13a of the optical function member 13 are joined to each other.

OPTICAL MODULE

An optical module A includes a mirror unit including a movable mirror and a fixed mirror , a beam splitter unit , a light incident unit , a first light detector , a second light source , a second light detector , a holding unit , a first mirror , a second mirror , and a third mirror . The holding unit holds the first light detector , the second light detector , and the second light source so as to face that same side, and to be aligned in this order. A length of an optical path between the unit and the detector is shorter than a length of an optical path between the unit and the detector , and a length of an optical path between the unit and the source 1. An optical module comprising:a mirror unit that includes a base including a first surface, a movable mirror that is supported in the base to be movable along a first direction that intersects the first surface, and a fixed mirror of which a position with respect to the base is fixed;a beam splitter unit that is disposed on one side of the mirror unit in the first direction, and constitutes an interference optical system in combination with the movable mirror and the fixed mirror;a light incident unit that causes measurement light that is incident from a first light source through a measurement target or measurement light that occurs from the measurement target to be incident to the beam splitter unit;a first light detector that detects interference light of the measurement light which is emitted from the beam splitter unit;a second light source that emits laser light to be incident to the beam splitter unit;a second light detector that detects interference light of the laser light which is emitted from the beam splitter unit;a holding unit that holds a first optical device, a second optical device, and a third optical device so that the first optical device that is the first light detector, the second optical device that is one of the second light source and the second light detector, and the third optical device ...

OPTICAL MODULE

An optical module includes: a mirror unit including a base , a movable mirror , and a fixed mirror ; a beam splitter unit that is disposed on one side of the mirror unit in a Z-axis direction; a light incident unit that causes measurement light L0 to be incident to the beam splitter unit ; a first light detector that is disposed on the one side of the beam splitter unit in the Z-axis direction, and detects interference light L of measurement light which is emitted from the beam splitter unit ; a support to which the mirror unit is attached; a first support structure that supports the beam splitter unit ; and a second support structure that is attached to the support and supports the first light detector 1. An optical module comprising:a mirror unit that includes a base including a first surface, a movable mirror that is supported in the base to be movable along a first direction that intersects the first surface, and a fixed mirror of which a position with respect to the base is fixed;a beam splitter unit that is disposed on one side of the mirror unit in the first direction, and constitutes an interference optical system in combination with the movable mirror and the fixed mirror;a light incident unit that causes measurement light that is incident from a first light source through a measurement target or measurement light that occurs from the measurement target to be incident to the beam splitter unit;a first light detector that is disposed on the one side of the beam splitter unit in the first direction, and detects interference light of the measurement light which is emitted from the beam splitter unit;a support to which the mirror unit is attached;a first support structure that supports the beam splitter unit; anda second support structure that is attached to the support and supports the first light detector.2. The optical module according to claim 1 ,wherein the first support structure is attached to the support.3. The optical module according to claim 1 , ...

SHORT-WAVE INFRARED SUPER-CONTINUUM LASERS FOR EARLY DETECTION OF DENTAL CARIES

A wearable device includes a measurement device having light emitting diodes (LEDs) measuring a physiological parameter. The measurement device modulates the LEDs to generate an optical beam having a near-infrared wavelength between 700-2500 nanometers. Lenses receive and deliver the optical beam to tissue, which reflects the optical beam to a receiver having spatially separated detectors coupled to analog-to-digital converters configured to generate receiver outputs. The receiver captures light while the LEDs are off, and reflected light from the tissue while the LEDs are on, to generate first and second signals, respectively. Signal-to-noise ratio is improved by differencing the first and second signals and by differencing the receiver outputs. The measurement device further improves signal-to-noise ratio of the reflected optical beam by increasing light intensity of the LEDs relative to an initial light intensity. The measurement device generates an output signal representing a non-invasive measurement on blood contained within the tissue. 1. A wearable device , comprising:a measurement device including a light source comprising a plurality of light emitting diodes (LEDs) for measuring one or more physiological parameters, the measurement device configured to generate, by modulating at least one of the LEDs having an initial light intensity, an optical beam having a plurality of optical wavelengths, wherein at least a portion of the optical beam includes a near-infrared wavelength between 700 nanometers and 2500 nanometers;the measurement device comprising one or more lenses configured to receive and to deliver at least a portion of the optical beam to tissue, wherein the tissue reflects at least a portion of the optical beam delivered to the tissue; capture light while the LEDs are off and convert the captured light into a first signal and', 'capture light while at least one of the LEDs is on and to convert the captured light into a second signal, the captured ...

NEAR-INFRARED LASERS FOR NON-INVASIVE MONITORING OF GLUCOSE, KETONES, HBA1C, AND OTHER BLOOD CONSTITUENTS

An imaging device includes laser diodes (LDs) generating near-infrared wavelength light, lenses configured to deliver the light to tissue, a first receiver having one or more detectors, and a first part with at least one of the LDs capable of being pulsed. The first receiver receives light reflected from the tissue and is synchronized to the pulsed light and configured to perform a time-of-flight measurement. An infrared camera receives light reflected by the tissue from a second part of the imaging device. The camera captures light while the second part is off, and while the second part is on to generate corresponding signals, and differences the signals to generate an image. An array of LDs generates a grid of spots on the tissue, which is reflected to the camera. A coupled phone, tablet, or computer receives and processes the time-of-flight measurement, the image, and the reflected grid of spots. 1. An imaging device , comprising:a plurality of laser diodes (LDs) configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers;one or more lenses configured to receive and to deliver a portion of the light to tissue, wherein the tissue is capable of reflecting at least a portion of the light delivered to the tissue;an array of LDs configured to generate light formed as a grid of spots, the light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers;one or more lenses configured to receive and to deliver a portion of the light from the array of LDs to tissue, wherein the tissue is capable of reflecting at least a portion of the light delivered to the tissue;a first receiver comprising one or more detectors;a first part of the imaging device comprising at least one of the plurality of LDs, the at least ...

SPECTRAL IMAGING OF A SAMPLE USING A PLURALITY OF DISCRETE MID-INFRARED WAVELENGTHS

Spectrally analyzing an unknown sample (A) includes (i) providing a spatially homogeneous region (B) of the unknown sample (A); (ii) directing a plurality of interrogation beams () at the spatially homogeneous region (B) with a laser source (), (iii) acquiring a separate output image () while the unknown sample (A) is illuminated by each of the interrogation beams () with an image sensor (A); and (iv) analyzing less than fifty output images () to analyze whether a characteristic is present in the unknown sample (A) with a control system () that includes a processor. Each of the interrogation beams () is nominally monochromatic and has a different interrogation wavelength that is in the mid-infrared spectral range. 1. A method for spectrally analyzing an unknown sample , the method comprising:providing a spatially homogeneous region of the unknown sample;directing a plurality of interrogation beams at the spatially homogeneous region with a laser source, each of the interrogation beams being nominally monochromatic and having a different interrogation wavelength that is in the mid-infrared spectral range;acquiring a separate output image of the unknown sample while the unknown sample is illuminated by each of the interrogation beams with an image sensor that senses light in the mid-infrared spectral region; andanalyzing less than fifty output images to analyze whether a characteristic is present in the unknown sample with a control system that includes a processor.2. The method of wherein analyzing includes analyzing less than thirty output images to analyze whether the characteristic is present in the unknown sample with the control system.3. The method of wherein analyzing includes analyzing less than twenty output images to analyze whether the characteristic is present in the unknown sample with the control system.4. The method of further comprising analyzing a known sample having the characteristic to identify a plurality of diagnostic spectral features claim 1 , ...

Method and apparatus for determining siloxane content of a gas

A method for determining siloxane content of a gas by non-dispersive infrared analysis including the steps of providing infrared light at a limited wave number band selected according to the absorption bands of the siloxanes, transmitting the infrared light at the limited wave number band to a volume of a gas to be analyzed, and detecting the intensity of the infrared light at the limited wave number band passed through the volume of a gas to be analyzed. The siloxane content is determined based on the absorption of the infrared light at the limited wave number band. Preferably, the limited wave number band lies in the range of 800 to 860 cm −1 .

SPECTROPHOTOMETER CALIBRATION METHODS AND SYSTEMS

A method of calibrating a spectrophotometer comprising a flash lamp. The method comprises receiving light from the flash lamp at a monochromator of the spectrometer, wherein the flash lamp is a short arc noble gas flash lamp with transverse or axially aligned electrodes; configuring the monochromator to progressively transmit the received light at each of a plurality wavelengths N of a selected range of wavelengths, wherein the range of wavelengths is associated with a wavelength feature according to a known spectral profile of the flash lamp, and wherein the wavelength feature is a self-absorption feature; and determining a spectrum of the flash lamp, wherein the spectrum comprises a corresponding power or intensity value for each of the plurality of wavelengths. The method further comprises determining a wavelength calibration error value for the wavelength feature by comparing the spectrum with a segment of a predetermined reference spectrum associated with the flash lamp, wherein the segment of the predetermined reference 1. A method of calibrating a spectrophotometer comprising a flash lamp , the method comprising:receiving light from the flash lamp at a monochromator of the spectrometer, wherein the flash lamp is a short arc noble gas flash lamp with transverse or axially aligned electrodes;configuring the monochromator to progressively transmit the received light at each of a plurality wavelengths of a selected range of wavelengths, wherein the range of wavelengths is associated with a wavelength feature according to a known spectral profile of the flash lamp, and wherein the wavelength feature is a self-absorption feature;determining a spectrum of the flash lamp, wherein the spectrum comprises a corresponding power or intensity value for each of the plurality of wavelengths;determining a wavelength calibration error value for the wavelength feature by comparing the spectrum with a segment of a predetermined reference spectrum associated with the flash lamp, ...

WIRELESS, DISPOSABLE, EXTENDED USE PULSE OXIMETER APPARATUS AND METHODS

Apparatus and methods provide wireless, disposable, continuous pulse oximeter sensor technology, useful and beneficial for a number of applications including relatively extended periods of data collection, and/or packaged in compact and easy-to-use assemblies. Economic fabrication and use provides flexible methodologies that can reduce the overall costs of monitoring and collecting patient's physiological data, and provide relatively greater ease and comfort to the patient. A disposable wireless continuous pulse oximeter sensor has a reduced emitter-detector separation, a low-power frontend, and a low-cost processor that sends waveforms to a host device so that the host can calculate and display the parameters of interest. Complications created by the reduced distance between emitter and detector are minimized by using an emitter-detector assembly with an optically dark background, and a bandage for improved optical compliance. 120-. (canceled)21. A pulse oximeter apparatus , comprising:an optical sensor attached to a measurement site of a user, the optical sensor comprising a light emitter to emit light towards the measurement site and a light detector to detect light acquired from the measurement site;a low energy wireless radio;a processor operably connected to the optical sensor and the low energy wireless radio;a battery operably connected to the optical sensor, the low energy wireless radio, and the processor; and modulating light emitted by the light emitter to cause the light detector to produce modulated signals associated with photoplethysmographs;', 'decimating the modulated signals to produce decimated signals that are associated with photoplethysmographs; and', 'transmitting in substantially real-time, using the low energy wireless radio, the decimated signals associated with photoplethysmographs to a computing device to enable presentation of photoplethysmographs., 'a memory for storing instructions, that when executed by the processor, cause ...

Light Source Having a Controllable Spectrum

The invention relates to an apparatus for generating light, comprising a plurality of light sources (), —a control device (), which drives the light sources (), and a superimposition optical unit, which superimposes the light emitted by the light sources () in an exit opening (). It is an object of the invention to provide an apparatus which is improved compared with the prior art. For this purpose, the invention proposes that the superimposition optical unit comprises a first concave mirror (), in the focal plane of which the light sources () are situated, an optical grating (), onto which the first concave mirror () reflects the light () emitted by the light sources (), and —a second concave mirror (), which reflects the light () diffracted at the optical grating () onto the exit opening () situated at the focus of the second concave mirror (). 2. The apparatus as claimed in claim 1 , wherein two or more of the beam paths of the light emitted by the light sources claim 1 , of the light reflected onto the optical grating claim 1 , of the light diffracted at the optical grating and of the light reflected onto the output opening cross one another.3. The apparatus as claimed in claim 1 , wherein the light sources are arranged alongside one another in a linear fashion.4. The apparatus as claimed in claim 1 , wherein the light sources are arranged alongside one another and one above another in a matrix-shaped fashion.5. The apparatus as claimed in claim 1 , wherein the light sources each comprise one or more light emitting diodes.6. The apparatus as claimed in claim 1 , wherein the light sources each have an optical fiber claim 1 , the fiber end of which is situated in the focal plane of the first concave mirror.7. The apparatus as claimed in claim 1 , wherein the control device is designed to drive at least one of a plurality of light sources in a pulsed fashion with at least one variable pulse duration and pulse frequency.8. The apparatus as claimed in claim 1 , ...

ACQUIRING A RAMAN SPECTRUM WITH MULTIPLE LASERS

A spectrometer is provided for acquiring a Raman spectrum from a sample. The spectrometer includes a first laser, a second laser, a detector and a processing device. The first laser is adapted to produce a first laser beam for generating first Raman spectra from the sample. The second laser is adapted to produce a second laser beam for generating second Raman spectra from the sample. The detector is adapted to collect the first Raman spectra and the second Raman spectra. The processing device is adapted to process the collected first and second Raman spectra to provide the Raman spectrum. 1. A spectrometer for acquiring a Raman spectrum from a sample , the spectrometer comprising:a first laser adapted to produce a first laser beam for generating first Raman spectra from the sample;a second laser adapted to produce a second laser beam for generating second Raman spectra from the sample;a detector adapted to collect the first Raman spectra and the second Raman spectra; anda processing device adapted to process the collected first and second Raman spectra to provide the Raman spectrum.2. The spectrometer of claim 1 , wherein the first laser and the second laser are configured to respectively produce the first laser beam and the second laser beam simultaneously.3. The spectrometer of claim 1 , wherein the first laser and the second laser are configured to respectively produce the first laser beam and the second laser beam sequentially.4. The spectrometer of claim 1 , whereinthe first laser beam has a first wavelength; andthe second laser beam has a second wavelength that is different than the first wavelength.5. The spectrometer of claim 1 , whereinthe first laser beam has a first wavelength between about 200 nm and about 1100 nm; andthe second laser beam has a second wavelength between about 200 nm and about 1100 nm, wherein the second wavelength is different than the first wavelength.6. The spectrometer of claim 1 , wherein at least one of the first laser or the ...

SPECTROMETRY SYSTEMS, METHODS, AND APPLICATIONS

A hand held spectrometer is used to illuminate the object and measure the one or more spectra. The spectral data of the object can be used to determine one or more attributes of the object. In many embodiments, the spectrometer is coupled to a database of spectral information that can be used to determine the attributes of the object. The spectrometer system may comprise a hand held communication device coupled to a spectrometer, in which the user can input and receive data related to the measured object with the hand held communication device. The embodiments disclosed herein allow many users to share object data with many people, in order to provide many people with actionable intelligence in response to spectral data. 1. A compact spectrometer comprising:a diffuser layer;a filter matrix layer;an iris layer;a lens layer; anda detector,wherein a distance from the diffuser layer to a light receiving surface of the detector is within a range from about 0.5 mm to about 3 mm.2. The spectrometer of claim 1 , wherein the spectrometer comprises a resolution within a range from about 1 nm to about 100 nm.3. The spectrometer of claim 2 , wherein the spectrometer comprises a resolution within a range from about 5 nm to about 50 nm.4. The spectrometer of claim 1 , further comprising a support beneath the detector claim 1 , wherein a distance from an upper surface of the diffuser layer to a lower surface of the support is within a range from about 0.5 mm to about 3 mm.5. The spectrometer of claim 4 , wherein a plurality of bonding pads is coupled to the lower surface of the support to couple the image sensor to a circuit board.6. The spectrometer of claim 1 , further comprising a stopper layer disposed between the detector and the lens layer.7. The spectrometer of claim 1 , wherein each of the elements is arranged in the following sequence: the diffuser layer claim 1 , the filter matrix layer claim 1 , the iris layer claim 1 , the lens layer claim 1 , and the detector.8. The ...

MOBILE GAS AND CHEMICAL IMAGING CAMERA

In one embodiment, an infrared (IR) imaging system for determining a concentration of a target species in an object is disclosed. The imaging system can include an optical system including an optical focal plane array (FPA) unit. The optical system can have components defining at least two optical channels thereof, said at least two optical channels being spatially and spectrally different from one another. Each of the at least two optical channels can be positioned to transfer IR radiation incident on the optical system towards the optical FPA. The system can include a processing unit containing a processor that can be configured to acquire multispectral optical data representing said target species from the IR radiation received at the optical FPA. Said optical system and said processing unit can be contained together in a data acquisition and processing module configured to be worn or carried by a person. 1. An imaging system comprising:an optical focal plane array (FPA) unit;a thermoelectric cooling (TEC) device coupled to a heat sink and configured to convey thermal energy from the optical FPA unit to the heat sink;a temperature sensor thermally coupled to the optical FPA unit and configured to generate a signal indicating a temperature of the optical FPA unit; anda controller in communication with the temperature sensor and the TEC device and configured to adjust an operation associated with the TEC device based on the signal from the temperature sensor.2. The imaging system of further comprising a heat sink fan configured to convey the thermal energy from the heat sink to a surrounding environment.3. The imaging system of claim 2 , wherein the TEC device is coupled to the heat sink fan.4. The imaging system of claim 1 , wherein the heat sink is cooled by a cooling liquid.5. The imaging system of claim 1 , wherein claim 1 , when adjusting the operation associated with the TEC device claim 1 , the controller is configured to cause the TEC device to maintain the ...

Fast computational phase and timing correction for multiheterodyne spectroscopy

Disclosed herein is an all-digital phase and timing correction procedure for coherent averaging in dual-comb and multiheterodyne spectroscopy—applicable to any dual-comb spectroscopy setup. It can account for large frequency/phase instabilities of the used sources, yielding a significant reduction of the noise pedestal and an increase in signal-to-noise ratio (SNR) of the radio frequency (RF) beat notes. This technique is computationally efficient and can be conveniently implemented either as a post-processing algorithm or in a real-time data acquisition and processing platform without the necessity of adding any additional optical elements to the dual-comb spectroscopy system. By implementing this technique, the performance of any comb- or comb-like-source-based DCS system with a sufficient degree of mutual coherence between the optical modes can be improved in terms of SNR and number of spectroscopically-usable RF beat notes. The described technique is compatible with a DC-centered RF spectrum, where the negative frequencies are folded to the positive domain to double the number of beat notes within the detector bandwidth. The technique enables coherent averaging over extended time-scales even for free-running combs, thus increasing the sensitivity of absorption and dispersion DCS measurements.

OPTICAL MODULE

An optical module includes a mirror unit and a beam splitter unit. The mirror unit includes a base with a main surface, a movable mirror, a first fixed mirror, and a drive unit. The beam splitter unit constitutes a first interference optical system for measurement light along with the movable mirror and the first fixed mirror. A mirror surface of the movable mirror and a mirror surface of the first fixed mirror follow a plane parallel to the main surface and face one side in a first direction perpendicular to the main surface. The movable mirror, the drive unit, and at least a part of an optical path between the beam splitter unit and the first fixed mirror are disposed in an airtight space. 1. A mirror unit comprising:a base which includes a first main surface and a second main surface opposite each other;a movable mirror which includes a mirror surface following a plane parallel to the first main surface and is supported by the base so as to be movable along a first direction perpendicular to the first main surface;a drive unit which moves the movable mirror along the first direction;a first member which includes a first surface fixed to the first main surface and a first recess formed on the first surface so as to correspond to the movable mirror and the drive unit; anda second member which includes a second surface fixed to the second main surface and a second recess formed on the second surface so as to correspond to the movable mirror and the drive unit.2. The mirror unit according to claim 1 , wherein an airtight space is formed by the base claim 1 , the first member and the second member.3. The mirror unit according to claim 1 , wherein the first recess is formed on the first surface so as to expand toward the movable mirror and the drive unit.4. The mirror unit according to claim 1 , wherein the second member has optical transparency.5. The mirror unit according to claim 1 , wherein the base is provided with a plurality of electrode pads claim 1 , and the ...

COMPACT, LOW COST RAMAN MONITOR FOR SINGLE SUBSTANCES

Apparatus for performing Raman spectroscopy may include a first laser source having a first emission wavelength and a second laser source having a second emission wavelength. A separation between the first and second emission wavelengths may correspond to a width of a Raman band of a substance of interest. A switch may provide switching between the first and second laser sources. An ensemble of laser emitters may be provided. A Bragg grating element may receive laser light from the ensemble. An optical system may direct light from the Bragg grating element into an optical fiber. A combined beam through the optical fiber may contain light from each of the emitters. 1. Apparatus for performing Raman spectroscopy , the apparatus comprising:an ensemble of laser emitters, the ensemble being adapted to emit first laser light having a first wavelength and second laser light having a second wavelength, wherein a separation between the first and second wavelengths corresponds to a width of a Raman band of a substance of interest;a Bragg grating element that is adapted to receive the first laser light and the second laser light, the Bragg grating element comprising a three-dimensional bulk of optical material having a Bragg grating recorded therein; andan optical system that is adapted to form a combined beam that contains light at each of the first and second wavelengths.2. The apparatus of claim 1 , further comprising a beam transformation system that receives the first laser light and the second laser light claim 1 , and rotates images of the laser emitters by 90 degrees.3. The apparatus of claim 1 , wherein each of the laser emitters is a p-n junction.4. The apparatus of claim 1 , wherein the laser emitters are respective p-n junctions in a single chip.5. The apparatus of claim 1 , wherein the laser emitters are individually addressable to emit respective laser light sequentially.6. The apparatus of claim 2 , further comprising a fast-axis collimator between the ensemble ...

Raman probe and bio-component analyzing apparatus using the same

Provided are a Raman probe and a bio-component analyzing apparatus using the same. The Raman probe according to an embodiment of the present disclosure may include: a probe head having a concave part configured to receive skin of an object being inserted into the concave part when the probe head comes into contact with the skin of the object; a light source part configured to emit light onto the skin inserted into the concave part; and a light collector formed above the concave part and configured to collect Raman scattered light from the skin inserted into the concave part. The light source part may be disposed on a side of at least one of the light collector and the concave part.

NEAR-INFRARED TIME-OF-FLIGHT IMAGING

A smart phone or tablet includes laser diodes configured to be pulsed and generate near-infrared light between 700-2500 nanometers. Lenses direct the light to a sample. A detection system includes a photodiode array with pixels coupled to CMOS transistors, and is configured to receive light reflected from the sample, to be synchronized to the light from the laser diodes, and to perform a time-of-flight measurement of a time difference between light from the laser diodes and light reflected from the sample. The detection system is configured to convert light received while the laser diodes are off into a first signal, and light received while at least one laser diodes is on, which includes light reflected from the sample, into a second signal. The smart phone or tablet is configured to difference the first signal and the second signal and to generate a two-dimensional or three-dimensional image using the time-of-flight measurement. 1. A smart phone or tablet , comprising:an array of laser diodes configured to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers, and wherein at least a portion of the array of laser diodes is configured to be pulsed;one or more lenses configured to receive a portion of the light from the array of laser diodes and to direct the portion of the light from the array of laser diodes to a sample;a detection system comprising a photodiode array with a plurality of pixels coupled to CMOS transistors;wherein the detection system is configured to receive at least a portion of light reflected from the sample, and wherein the detection system is configured to be synchronized to the light from the at least a portion of the array of laser diodes;wherein the detection system is configured to perform a time-of-flight measurement by measuring a time difference between the generated light from the at least a ...

LIGHT-BASED SPECTROSCOPY WITH IMPROVED SIGNAL-TO-NOISE RATIO

A measurement system includes a light source having semiconductor sources, a multiplexer, and one or more fused silica fibers configured to form an output optical beam having one or more optical wavelengths modulated at a modulation frequency. A light beam set-up includes a monochromator forming a filtered optical beam. A measurement apparatus delivers the filtered optical beam to a sample. A receiver receives a spectroscopy output beam generated from the sample by the filtered optical beam. The receiver is configured to use a lock-in technique that detects the modulation frequency, and to generate first and second signals responsive to light received while the light source is off and on, respectively. The measurement system improves a signal-to-noise ratio of the spectroscopy output beam by differencing the first and second signals. The receiver processes the spectroscopy output beam using chemometrics or multivariate analysis to permit identification of materials within the sample. 1. A measurement system comprising: a plurality of semiconductor sources configured to generate an input optical beam;', 'a multiplexer configured to receive at least a portion of the input optical beam and to form an intermediate optical beam;', 'one or more fibers configured to receive at least a portion of the intermediate optical beam and to form the output optical beam;', 'wherein at least a portion of the one or more fibers comprises a fused silica fiber;', 'wherein the output optical beam comprises one or more optical wavelengths; and', 'wherein the output optical beam is modulated at a modulation frequency;, 'a light source configured to generate an output optical beam, comprisinga light beam set-up comprising a monochromator configured to receive at least a portion of the output optical beam and to form a filtered optical beam;a measurement apparatus configured to receive a received portion of the filtered optical beam and to deliver a delivered portion of the filtered optical ...

PHYSIOLOGICAL MEASUREMENT DEVICE USING LEDS

A wearable device includes a measurement device adapted to be placed on a wrist or ear having a light source with LEDs to measure physiological parameters. The measurement device generates an optical beam having a near infrared wavelength between 700-2500 nanometers by modulating the LEDs, and lenses to deliver the beam to tissue, which reflects the beam to a receiver having spectral filters in front of spatially separated detectors coupled to analog to digital converters that generate at least two receiver outputs. Signal-to-noise ratio of the beam reflected from the tissue is improved by comparing the receiver outputs, and by increasing light intensity from the LEDs. The receiver is synchronized to the modulation of the LEDs and uses a lock-in technique that detects the modulation frequency. The measurement device generates an output signal representing a non-invasive measurement on blood within the tissue. 1. A wearable device , comprising:a measurement device including a light source comprising a plurality of light emitting diodes (LEDs) for measuring one or more physiological parameters, the measurement device configured to generate, by modulating at least one of the LEDs having an initial light intensity, an optical beam having a plurality of optical wavelengths, wherein at least a portion of the plurality of optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers;the measurement device comprising one or more lenses configured to receive and to deliver a portion of the optical beam to tissue, wherein the tissue reflects at least a portion of the optical beam delivered to the tissue, and wherein the measurement device is adapted to be placed on a wrist or an ear of a user;the measurement device further comprising a receiver, the receiver having a plurality of spatially separated detectors and one or more analog to digital converters coupled to the spatially separated detectors, the one or more analog to digital converters ...

SYSTEM FOR RAPID ASSESSMENT OF WATER QUALITY AND HARMFUL ALGAL BLOOM TOXINS

The present invention is directed toward the early detection of harmful algal blooms. The system employs the ability of whole cell non-contact micro Raman spectroscopy to detect cell pigmentation in such a way that distinct patterns or fingerprints can be assembled. Light field microscopy will provide a fundamentally innovative increase in image and sample volume. Furthermore, darkfield microscopy is employed to capture high-resolution, color images of the detected plankton to increase the accuracy of species identification and classification. Together, this new instrument will provide a powerful yet elegantly simple solution to detection of HAB cells and characterization of environmental conditions. 1. A portable detection device for detecting and quantifying a target of interest , comprising:an optical system comprising a camera;a Raman spectroscopic assembly comprising a spectrometer and a laser, said laser capable of producing laser light;a lens with an image face and a defined focal length;an optical splitter arranged between said lens and said camera;a target space, capable of at least temporarily accommodating at least one target to be detected; anda power source, operably connected to said optical system;wherein said optical splitter directs said laser light to said target space, and said spectrometer receives light information reflected from a target, providing a spectrum associated with the target, and the device is capable of operating in an aquatic environment.2. The device of further comprising a light source claim 1 , disposed distal to the image face capable of producing two or more primary light beams which do not intersect with the image face of the lens wherein said primary beams interact with a target in the target space to produce a secondary light beam which impinges on the distal face of the lens.3. The device of further comprising a housing and a connection means claim 2 , said Raman spectroscopic assembly disposed in said housing claim 2 , ...

Short-wave infrared super-continuum laers for natural gas leak detection, exploration, and other active remote sensing applications

A system and method for using near-infrared or short-wave infrared (SWIR) light sources between approximately 1.4-1.8 microns, 2-2.5 microns, 1.4-2.4 microns, 1-1.8 microns for active remote sensing or hyper-spectral imaging for detection of natural gas leaks or exploration sense the presence of hydro-carbon gases such as methane and ethane. Most hydro-carbons (gases, liquids and solids) exhibit spectral features in the SWIR, which may also coincide with atmospheric transmission windows (e.g., approximately 1.4-1.8 microns or 2-2.5 microns). Active remote sensing or hyper-spectral imaging systems may include a fiber-based super-continuum laser and a detection system and may reside on an aircraft, vehicle, handheld, or stationary platform. Super-continuum sources may emit light in the near-infrared or SWIR. An imaging spectrometer or a gas-filter correlation radiometer may be used to identify substances or materials such as oil spills, geology and mineralogy, vegetation, greenhouse gases, construction materials, plastics, explosives, fertilizers, paints, or drugs.

SPECTRAL IMAGING OF A SAMPLE USING A PLURALITY OF DISCRETE MID-INFRARED WAVELENGTHS

Spectrally analyzing an unknown sample (A) includes (i) providing a spatially homogeneous region (B) of the unknown sample (A); (ii) directing a plurality of interrogation beams () at the spatially homogeneous region (B) with a laser source (), (iii) acquiring a separate output image () while the unknown sample (A) is illuminated by each of the interrogation beams () with an image sensor (A); and (iv) analyzing less than fifty output images () to analyze whether a characteristic is present in the unknown sample (A) with a control system () that includes a processor. Each of the interrogation beams () is nominally monochromatic and has a different interrogation wavelength that is in the mid-infrared spectral range. 1. A method for spectrally analyzing an unknown sample , the method comprising:providing a spatially homogeneous region of the unknown sample;directing a plurality of interrogation beams at the spatially homogeneous region with a laser source, each of the interrogation beams being nominally monochromatic and having a different interrogation wavelength that is in the mid-infrared spectral range;acquiring a separate output image of the unknown sample while the unknown sample is illuminated by each of the interrogation beams with an image sensor that senses light in the mid-infrared spectral region; andanalyzing less than fifty output images to analyze whether a characteristic is present in the unknown sample with a control system that includes a processor.2. The method of wherein analyzing includes analyzing less than thirty output images to analyze whether the characteristic is present in the unknown sample with the control system.3. The method of wherein analyzing includes analyzing less than twenty output images to analyze whether the characteristic is present in the unknown sample with the control system.4. The method of further comprising analyzing a known sample having the characteristic to identify a plurality of diagnostic spectral features claim 1 , ...

Biological material measuring apparatus

A controller corrects a spectrum S (λ) detected at a wavelength λ of signal light to S′ (λ) in accordance with expressions below: I(λ)=(I2−I1)×(λ−λ1)/(λ2−λ1)−I1, and S′(λ)=S(λ)−I(λ), where I1 is the intensity of infrared light detected at a wavelength λ1 of reference light and I2 is the intensity of infrared light detected at a wavelength λ2 of correction light.

LIGHT SOURCE DEVICE

A light source device to illuminate a target to be imaged by an imaging unit which includes N kinds of light detection elements which wavelength sensitivity regions are different each other includes a light source section, an insertion portion, an illumination light emitting portion and a light guide member. The light source section emits M kinds of narrow-band light which have different peak wavelengths, a difference between the peak wavelengths being equal to or more than an effective wavelength gap. The insertion portion is configured to be inserted into an internal space of an object. The illumination light emitting portion is provided in the insertion portion and which emits an illumination light. The light guide member guides the narrow-band light emitted from the light source section to the illumination light emitting portion. 1. A light source device to illuminate a target to be imaged by an imaging unit which includes N (N is a natural number) kinds of light detection elements which wavelength sensitivity regions that are detectable wavelength bands are different each other , the light source device comprising:a light source section configured to emit M (M is a natural number greater than N) kinds of narrow-band light which have different peak wavelengths, a difference between the peak wavelengths being equal to or more than an effective wavelength gap;an insertion portion configured to be inserted into an internal space of an object where the target exists;an illumination light emitting portion which is provided in the insertion portion and which emits an illumination light; anda light guide member which guides the narrow-band light emitted from the light source section to the illumination light emitting portion, the guided light being emitted from the illumination light emitting portion as the illumination light.2. The light source device according to claim 1 , whereineach of all the wavelength sensitivity regions includes at least one of the peak ...

NEAR-INFRARED LASER DIODES USED IN IMAGING APPLICATIONS

A smart phone or tablet includes pulsed laser diodes generating light with near-infrared wavelengths between 700-2500 nanometers. First lenses direct light from the laser diodes to tissue. An array of pulsed laser diodes generates light with near-infrared wavelengths between 700-2500 nanometers. Second lenses form light from the array into spots directed on the tissue. An infrared camera synchronized to the laser diodes and the array generates data based on light reflected from the tissue. The smart phone or tablet generates a two-dimensional or three-dimensional image using the data from the infrared camera. The smart phone or tablet includes a wireless receiver, a wireless transmitter, a display, a voice input module, and a speaker. 1. A smart phone or tablet , comprising:one or more laser diodes configured to be pulsed and to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers;a first one or more lenses configured to receive a portion of the light from the one or more laser diodes and to direct at least some portion of the received light to tissue;an array of laser diodes configured to be pulsed and to generate light having one or more optical wavelengths, wherein at least a portion of the one or more optical wavelengths is a near-infrared wavelength between 700 nanometers and 2500 nanometers;a second one or more lenses configured to receive a portion of the light from the array of laser diodes, the array of laser diodes and the second one or more lenses configured to form the light into a plurality of spots and to direct at least some of the spots to tissue; the infrared camera further configured to be synchronized to the array of laser diodes to receive light from at least a portion of the plurality of spots reflected from the tissue, and wherein the infrared camera generates additional data based at least in part on the ...

SYSTEMS AND METHODS FOR IMAGING FINE ART PAINTINGS

Color values as a function of position within a painting may be determined by acquiring a plurality of sets of images of the painting. Each set of images may correspond to a different region within the painting. Each image in a set of images may be acquired using a different lighting condition. An optical system comprising a telecentric lens may be used to acquire each image. Within a set of images, corresponding lightness values of pixels may be compared. Lightness values varying from other corresponding lightness values more than a threshold amount may be eliminated. The non-eliminated lightness values for a pixel may be used to generate a processed value for the pixel. The processed values for each pixel representing an imaged region may be combined into a single image. Eliminating lightness values may remove specular highlights and/or shadows. Each of the single images corresponding to each set of images may be registered together to generate a color map image of the painting. The generated color map image may be used to correct color data collected by laser scanning the painting. A 3D printer may, for example, use the corrected laser color data in combination with an elevation map of the painting to produce a faithful reproduction of the painting. 1. A method for generating color map images of paintings , a color map image representing color values of a painting as a function of position in the painting , the method comprising:{'b': '2', 'for each of a plurality of overlapping regions of the painting acquiring a set of images, the set of images comprising a plurality of images with different ones of the plurality of images acquired while the region is illuminated by light incident on the region of the painting from different directions, the imaging performed by an imaging device including an imaging sensor and an optical system arranged to focus an image of the region of the painting onto the imaging sensor, the optical system having an object space telecentric ...

FIBER-OPTIC MEASUREMENT SYSTEM AND METHODS BASED ON ULTRA-SHORT CAVITY LENGTH FABRY-PEROT SENSORS AND LOW RESOLUTION SPECTRUM ANALYSIS

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. 1. An optical system , comprising:an optical sensor having an ultra-short Fabry-Perot cavity, wherein the ultra-short Fabry-Perot cavity comprises a cavity length of shorter than 2.5 μm; andan optical interrogation system coupled to the optical sensor and operational to send light signals to the optical sensor and receive light signals from the optical sensor within a wavelength range of at least between 400 nm to 1100 nm, which includes visible and near-infrared range, wherein the optical interrogation system comprises a spectrally-sensitive detection system having a color detector adapted to receive the light signals and simultaneously detect light-intensity at more than one wavelength.2. The optical system of claim 1 , wherein the color detector comprises a multi-color detector.3. The optical system of claim 1 , wherein the color detector comprises a multi-color optical sensor.4. The optical system of claim 1 , wherein the color detector comprises an RGB sensor.5. The optical system of claim 1 , wherein the color detector comprises an RGBY sensor.6. The optical system of claim 1 , wherein the color detector is configured to detect light intensity at three different wavelengths.7. The optical system of claim 1 , wherein the optical interrogation system is configured to determine ratios between individual color channels.8. The optical system of claim 1 , wherein the color detector and cavity length are configured to detect a zero-order peak within the wavelength range of at least between 400 nm to 1100 ...

WIRELESS, DISPOSABLE, EXTENDED USE PULSE OXIMETER APPARATUS AND METHODS

Apparatus and methods provide wireless, disposable, continuous pulse oximeter sensor technology, useful and beneficial for a number of applications including relatively extended periods of data collection, and/or packaged in compact and easy-to-use assemblies. Economic fabrication and use provides flexible methodologies that can reduce the overall costs of monitoring and collecting patient's physiological data, and provide relatively greater ease and comfort to the patient. A disposable wireless continuous pulse oximeter sensor has a reduced emitter-detector separation, a low-power frontend, and a low-cost processor that sends waveforms to a host device so that the host can calculate and display the parameters of interest. Complications created by the reduced distance between emitter and detector are minimized by using an emitter-detector assembly with an optically dark background, and a bandage for improved optical compliance. 120-. (canceled)21. An apparatus for gathering continuous medical data from a patient , including: an optical sensor attached to a printed circuit board, the optical sensor comprising at least one light emitter to emit light toward a measurement site of the patient and at least one light detector to detect light reflected from the measurement site;', 'a processor attached to the printed circuit board and operably connected to the optical sensor;', 'a wireless transmitter attached to the printed circuit board and operably connected to the processor;', 'a non-rechargeable battery operably connected to the optical sensor, the processor, and the wireless transmitter; and', in a first period of time, only a first light wavelength range is turned on for approximately twenty-five percent of a modulation time cycle and turned off for approximately seventy-five percent; and', 'in a second period of time, only a second light wavelength range is turned on for approximately twenty-five percent of the modulation time cycle, only a third light wavelength ...

Semiconductor diodes-based physiological measurement device with improved signal-to-noise ratio

A wearable device includes a measurement device to measure a physiological parameter adapted to be placed on a wrist or an ear of a user. A plurality of semiconductor light sources such as light emitting diodes generate corresponding output light having an initial light intensity. A receiver includes spatially separated detectors receiving reflected light from the output lights and coupled to analog to digital converters. The receiver is configured to synchronize to the semiconductor source(s). The measurement device improves signal-to-noise ratio of the output signal by increasing light intensity relative to the initial light intensity and by increasing a pulse rate. Further improvement in signal-to-noise ratio is achieved by using change detection, where the receiver compares the signals with light on and with light off.

HETEROGENEOUS SPECTROSCOPIC TRANSCEIVING PHOTONIC INTEGRATED CIRCUIT SENSOR

Described herein are optical sensing devices for photonic integrated circuits (PICs). A PIC may comprise a plurality of waveguides formed in a silicon on insulator (SOI) substrate, and a plurality of heterogeneous lasers, each laser formed from a silicon material of the SOI substrate and to emit an output wavelength comprising an infrared wavelength. Each of these lasers may comprise a resonant cavity included in one of the plurality of waveguides, and a gain material comprising a non-silicon material and adiabatically coupled to the respective waveguide. A light directing element may direct outputs of the plurality of heterogeneous lasers from the PIC towards an object, and one or more detectors may detect light from the plurality of heterogeneous lasers reflected from or transmitted through the object. 1. A method of processing light from an object using a photonic integrated circuit , the method comprising:generating light at one or more wavelengths using a light source of the photonic integrated circuit;coupling the light into one or more waveguides formed in the photonic integrated circuit;directing the light towards the object using a lens of the photonic integrated circuit;directing, with the lens, a portion of returning light that is returned from the object onto at least one detector; andreceiving, with the at least one detector, at least the portion of returning light that is returned from the object.2. The method of claim 1 , further comprising:directing the light towards the lens using a grating that is coupled to the one or more waveguides.3. The method of claim 2 , wherein the at least one detector is coupled to a plurality of gratings to receive claim 2 , from the lens claim 2 , the portion of returning light that is returned from the object.4. The method of claim 3 , wherein the plurality of gratings are located around the grating that directs the light towards the lens.5. The method of claim 2 , wherein the grating transmits the light towards the ...

White excitation light generating device and white excitation light generating method

In general aspect, a white excitation light generating device can include a fluorescent excitation light source that generates fluorescent excitation light, a first light source that generates first monochromatic light of a first wavelength different from a wavelength of the fluorescent excitation light, a second light source that generates second monochromatic light of a second wavelength different from the wavelength of the fluorescent excitation light and the first wavelength, a spectrophoto sensor that measures tristimulus values of at least one of the fluorescent excitation light, the first monochromatic light, and the second monochromatic light, and a controller that adjusts an output of at least one of the fluorescent excitation light source, the first light source, and the second light source on the basis of the measured tristimulus values.

Tunable optical receiver

An embodiment of the disclosure provides a system for determining information on one or more constituents in a medium. The system includes N light emitters L 1 . . . L N , wherein each light emitter L r provides an amplitude modulated (AM) light at modulation frequency f r into a flow path of the medium from one side of a containment vessel for the medium. The system further includes a photodetector, for receiving the AM light from each light emitter after it passes through the flow path of the medium, and converting the AM light to an electrical signal characterized by a summation of frequency components from each modulation frequency f r . The system further includes one or more measuring circuits providing information about a concentration of one or more constituents in the medium determined from log ratios of a pair of amplitudes of f y and f z frequency components in the electrical signal.

Hyperspectral, fluorescence, and laser mapping imaging with fixed pattern noise cancellation

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.

Illumination and detection apparatus for a metrology apparatus

Disclosed is an illumination and detection apparatus for a metrology tool, and associated method. The apparatus comprises an illumination arrangement operable to produce measurement illumination comprising a plurality of discrete wavelength bands and comprising a spectrum having no more than a single peak within each wavelength band. The detection arrangement comprises a detection beamsplitter to split scattered radiation into a plurality of channels, each channel corresponding to a different one of said wavelength bands; and at least one detector for separate detection of each channel.

Illumination and detection apparatus for a metrology apparatus

Disclosed is an illumination and detection apparatus for a metrology tool, and associated method. The apparatus comprises an illumination arrangement operable to produce measurement illumination comprising a plurality of discrete wavelength bands and comprising a spectrum having no more than a single peak within each wavelength band. The detection arrangement comprises a detection beamsplitter to split scattered radiation into a plurality of channels, each channel corresponding to a different one of said wavelength bands; and at least one detector for separate detection of each channel.

Spectrometer

The present invention concerns an LED spectrometer operating without moving parts according to the sweep principle, and appropriate to serve as a structural component in many kinds of spectroscopic concentration analyzers. The design of the invention affords the advantage that, even at its minimum, the optical power of the LED spectrometer of the invention is about fivefold compared with the designs of prior art. Furthermore, improvement of the efficiency of the LED radiation source and of that of the optics has brought a multiple augmentation in power to the wavelength spectrum sent out by the radiation source. In the design of the invention, concentrators (6) of non-imaging type are used to collimate the wavelength spectrum emitted by the LEDs (3).

The device of fluorescence and the use of this device for optical measurement sample amplifying nucleic acid

本发明涉及一种装置(12；72)，用于光学测量试样(14)中核酸的荧光。所述装置(12；72)包括多个试样孔(32)，每个试样孔用于接收由透明材料制成的直立的试样管(16)，每个试样管(16)具有侧壁(20)和底端(22)，并且容纳与至少一种荧光染料一起的试样(14)之一；至少一个激发光源(24；74,76,78,80)，其设置在每个试样孔(32)的附近，用于引导激发光束穿过试样管(16)的侧壁(20)进入到试样(14)中用于激发染料；以及光学荧光检测器(28)，其设置在每个试样管(16)的底端(22)下方，用于捕获激发时从试样(14)中的染料发射的荧光。

Device for optically measuring fluorescence of nucleic acids in test samples and use of the device

The invention relates to a device ( 12; 72 ) for optically measuring fluorescence of nucleic acids in test samples ( 14 ). The device ( 12; 72 ) comprises a plurality of sample wells ( 32 ) each for receiving an upright sample tube ( 16 ) made of a transparent material, having a side wall ( 20 ) and a bottom end ( 22 ) and containing one of the test samples ( 14 ) together with at least one fluorescent dye, at least one excitation light source ( 24; 74, 76, 78, 80 ) disposed in the vicinity of each sample well ( 32 ) for directing an excitation light beam through the side wall ( 20 ) of the sample tube ( 16 ) into the test sample ( 14 ) for exciting the dye, and an optical fluorescence detector ( 28 ) disposed underneath the bottom end ( 22 ) of each sample tube ( 16 ) for capturing fluorescence emitted from the dye in the test sample ( 14 ) upon excitation.

A detector system comprising a plurality of light guides and a spectrometer comprising such a detector system

복수의 광 가이드(11a, 11b, 11c, 11d)를 포함하는 검출기 시스템(100)이 제공된다. 각각의 광 가이드(11a, 11b, 11c, 11d)는 사용시 각각의 대상물로부터 입사 광을 안내하며, 상기 입사 광은 조명 수단(10)에 의해 제공된다. 상기 검출기 시스템(100)은 상기 입사 광을 상이한 파장 범위로 회절하기 위한 회절 수단(12), 상기 광 가이드로부터 나오는 입사 광을 상기 회절 수단으로 투영하기 위한 적어도 하나의 포커서(13), 상기 복수의 광 가이드로부터 회절된 광을 수신하기 위한 검출기 영역을 가지는 검출기(14), 및 제어 유닛(15)을 포함한다. 상기 제어 유닛은 펄스 타이밍 파라미터를 기초로 하여 한 번에 하나의 광 가이드만을 경유하여 입사 광을 맥동시키고 상기 펄스 타이밍 파라미터를 기초로 하여 각각의 광 가이드로부터 회절되고 상기 검출기(14)에 의해 검출된 광의 스펙트럼을 기록하도록 배열된다. A detector system (100) is provided comprising a plurality of light guides (11a, 11b, 11c, 11d). Each of the light guides 11a , 11b , 11c , 11d guides incident light from a respective object in use, the incident light being provided by the lighting means 10 . The detector system 100 comprises diffraction means 12 for diffracting the incident light into different wavelength ranges, at least one focuser 13 for projecting the incident light from the light guide onto the diffraction means, the plurality of a detector 14 having a detector area for receiving diffracted light from the light guide, and a control unit 15 . The control unit pulsates incident light via only one light guide at a time based on the pulse timing parameter and diffracted from each light guide based on the pulse timing parameter and detected by the detector 14 . arranged to record a spectrum of light.

Spectrophotometer and method

一种分光光度计，其包含布置成圆形阵列的多个LED，每一LED具有通过使用脉冲宽度调制来确定的经校准的功率输入，且每一LED具有通过利用唯一荧光磷光体涂层或透镜来确定的唯一波长带。所述LED中的至少一者包括无磷光体的高能量UV LED。通过利用线性可变滤光片和光电检测器将反射到所述分光光度计的光分成预定波长范围，其中通过使用自动距离修正增益技术将来自光电检测器的模拟信号转换为数字值。

Method and apparatus for the monitoring and control of combustion

센싱장치는 각각 일정한 발진 주파수를 갖는 한 개 이상의 다이오드 레이저와, 다이오드 레이저의 출력과 광학적으로 연결되며, 또 발신측 광섬유에 광학적으로 연결되는 멀티플렉서로 구성된다. 다중화 레이저 빛은 발신측 광섬유를 통해 발신 광학부로 전송된다. 발신 광학부는 연소실 또는 석탄이나 가스 화력 발전소의 보일러 등과 같은 프로세스 실과 작용적으로 연결되어 있다. 또한, 수신 광학부는 상기 프로세스 실과 작용적으로 연결되며, 상기 발신 광학부와 광학적으로 연통되고, 상기 프로세스 실을 관통하여 발사된 다중화 레이저 출력을 수신한다. 수신 광학부는 광섬유에 광학적으로 연결되어 다중화 레이저 출력을 디멀티플렉서로 전송한다. 디멀티플렉서는 레이저 빛을 역다중화하며, 선택된 발진 주파수의 빛을 검출기에 광학적으로 연결한다. 검출기는 선택된 발진 주파수 중의 하나에 민감하다. The sensing device comprises one or more diode lasers each having a constant oscillation frequency, and a multiplexer optically connected to the output of the diode laser and optically connected to the source fiber. The multiplexed laser light is transmitted to the outgoing optics through the outgoing fiber. The outgoing optics are operatively connected to the process chamber, such as the combustion chamber or boiler of a coal or gas fired power plant. In addition, the receiving optics is operatively connected to the process chamber, in optical communication with the transmitting optics, and receives the multiplexed laser output fired through the process chamber. The receiving optics are optically coupled to the optical fiber to transmit the multiplexed laser output to the demultiplexer. The demultiplexer demultiplexes the laser light and optically couples the light of the selected oscillation frequency to the detector. The detector is sensitive to one of the selected oscillation frequencies. 연소제어, 다중화, 레이저 빛, 에셜 격자, 얼라인먼트 빔, 광섬유 Combustion control, multiplexing, laser light, essence grating, alignment beam, optical fiber

Raman spectroscopy devices, systems and methods using multiple discrete light sources

本申请涉及使用多个离散光源的拉曼光谱仪设备、系统和方法，描述了探测样本的光谱特性的拉曼光谱装置，该装置包含适于用电磁辐射激发样本的多个调制离散光源，适于隔离样本发射的预定波长的滤波器、其中该波长在不同频率上被进一步调制，以及用于探测该隔离的波长的探测器。该装置可进一步包含适于调制激发能量的干涉仪，例如迈克耳逊干涉仪。本发明也提供了包含该拉曼光谱装置的方法、系统和套件。

Chromatic confocal sensor and measurement method

Patterned optic for epi-fluorescence collection

The present disclosure relates to systems and methods for epi-fluorescence collection. An example system includes an optical element, one or more light sources, and an image sensor. The optical element includes at least one high reflectivity (HR) coating portion and at least one anti-reflection (AR) coating portion. The light source(s) is/are optically-coupled to the optical element along a first optical axis. The one or more light sources emit excitation light, which interacts, via the optical element, with a sample. The sample includes a fluorophore that emits emission light in response to the excitation light. The image sensor is optically-coupled to the optical element along a second optical axis. The image sensor detects the emission light via the optical element.

Apparatus for determining information associated with reflection characteristics of a surface

本发明公开了一种设备，用于确定与表面反射特征关联的信息，该设备包括：传感器(60)，所述传感器被构造为根据入射在所述传感器上的光强度产生传感器输出，并且在使用中具有指向外表面(57)的视场；照明源(58)，所述照明源被构造在使用中为将光发射到所述外表面上；光学透明窗(61)，所述光学透明窗布置成在使用中允许光从所述照明源传送到所述外表面，并且允许光从所述外表面传送到所述传感器；聚光器(66)，所述聚光器固定到所述窗或者与所述窗成一体，所述聚光器被构造成在使用中将来自所述照明源的至少一些光聚集到所述外表面上，使得聚集的光可以从所述外表面经由所述窗反射到所述传感器上；和处理器(40)，所述处理器被构造为使用传感器输出来确定与所述外表面的反射特征相关联的信息。

Calibration reference light source and calibration system using the same

Mobile gas and chemical imaging camera

在一个实施例中，公开了用于确定物体中目标物质的浓度的红外（IR）成像系统。该成像系统可以包括光学系统，该光学系统包括光学焦平面阵列（FPA）单元。该光学系统可以具有限定其至少两个光学通道的部件，所述至少两个光学通道在空间上和光谱上彼此不同。所述至少两个光学通道中的每个光学通道可以被定位成将入射在光学系统上的IR辐射朝光学FPA传输。该系统可以包括处理单元，该处理单元包含处理器，该处理器可以被配置为从在光学FPA处接收到的IR辐射采集表示所述目标物质的多光谱光学数据。所述光学系统和所述处理单元可以被一起包含在数据采集和处理模块中，该数据采集和处理模块被配置为由人穿戴或携带。

Coded light for target imaging or spectroscopic or other analysis

Modulation-encoded light, using different spectral bin coded light components, can illuminate a stationary or moving (relative) target object or scene. Response signal processing can use information about the respective different time-varying modulation functions, to decode to recover information about a respective response parameter affected by the target object or scene. Electrical or optical modulation encoding can be used. LED-based spectroscopic analysis of a composition of a target (e.g., SpO2, glucose, etc.) can be performed; such can optionally include decoding of encoded optical modulation functions. Baffles or apertures or optics can be used, such as to constrain light provided by particular LEDs. Coded light illumination can be used with a focal plane array light imager receiving response light for inspecting a moving semiconductor or other target. Encoding can use orthogonal functions, such as an RGB illumination sequence, or a sequence of combinations of spectrally contiguous or non-contiguous colors.

Inspection device with colour lighting

The invention relates to a device and a method for inspecting containers (10) for impurities (12) and three-dimensional container structures comprising a radiation source (14). The radiation source is designed to emit radiation (18) that radiates through a container to be examined. The device also comprises a detection element (20) designed to detect the radiation that has been emitted by the radiation source and has radiated through the container. The device further comprises an evaluation element designed to evaluate the radiation detected by the detection element in terms of dirt and damage to the container. The radiation source has a plurality of spatially separated (16.1, 16.2, 16.3) radiation zones. The radiation zones of the radiation source are designed to emit radiation of different wavelength ranges or of a different intensity.

Dispersion device and spectrometer

本发明公开了一种色散装置和光谱仪，色散装置包括：光学基板，其配置为传输光；多个准直的光源，其设置在光学基板的一侧上；多个光栅，多个光栅与多个准直的光源一一对应地设置在光学基板的一侧的表面上，被配置为分别对来自相应准直的光源的光的不同波段进行色散，使得色散光束中的所有目标波长光的一级衍射波的衍射角都小于光学基板与空气之间的全反射角；出光口，其与准直的光源对应地设置在光学基板的另一侧的表面上，被配置为取出色散光束中的所有目标波长光的一级衍射波。本实施例的色散装置中，光栅结构简单，且准直的光源和光栅一一对应设置，直接一次通过光学基板实现色散，可以实现较高的光能利用率。

Methods for color sensing ambient light sensor calibration

An electronic device may be provided with a color sensing ambient light sensor. The color sensing ambient light sensor may measure the color of ambient light. Control circuitry in the electronic device may use information from the color sensing ambient light sensor in adjusting a display in the electronic device or taking other action. The color sensing ambient light sensor may have light detectors with different spectral responses. A test system may be used to calibrate the color sensing light sensor. The test system may have a tunable light source with light-emitting diodes that are turned on in sequence while gathering measured responses from the detectors. Numerical optimization techniques may be used to produce final versions of the spectral responses for the light detectors from the measured responses and corresponding calibration data that is stored in the electronic device.

Illumination and detection device for a metrology device

公开了一种用于量测工具的照射和检测设备以及相关方法。该设备包括照射装置，该照射装置能够被操作以产生测量照射，该测量照射包括多个离散波长带并且在每个波长带内包括具有至多单个峰的光谱。该检测装置包括检测分束器以将散射辐射分成多个通道，每个通道与所述波长带中的不同的波长带相对应；以及至少一个检测器，用于分开地检测每个通道。

Light-source optical system for a spectrometer for multi element analysis

A light-source optical system for a spectrometer for multi element analysis contains a plurality of monochromatic or line-emitting light sources and optical means with the aid of which it is possible to deflect light bundles from these light sources into a common beam path. Examples are described in which these optical means are formed by rotating mirror arrangements. In another example, the "optical means" are a diffraction grating. In this case, the various light sources are arranged such that the wavelength of the light emitted by each light source is directed by the diffraction grating into the common beam path.

Spectrum measuring apparatus for mover

Disclosed is a mover spectrum measuring apparatus, which is able to discriminate an object being measured more reliably by relieving the influences of an environmental light on photographic data by a spectrum sensor mounted on a mover such as a vehicle. A spectrum sensor (S) capable of measuring wavelength information and optical intensity information is mounted on a vehicle, so that an object being measured around the vehicle is discriminated on the basis of the spectrum data relating to the observation light detected by the spectrum sensor (S). The mover spectrum measuring apparatus comprises an illumination device (120) for making variable the featuring quantity of at least either the wavelength range of the observation light or the optical intensity of each wavelength, and controls the featuring quantity varying mode by the illumination device (120) through an illumination controller (110) on the basis of the control value according to an environmental element.

Spectrometer with an led array

The invention proposes an apparatus (110) for determining at least one optical property of a sample (112). The apparatus (110) comprises a tunable excitation light source (114; 410) for applying excitation light (122) to the sample (112). The apparatus (110) also comprises a detector (128, 130; 312) for detecting detection light (132, 136; 314) coming from the sample (112). The excitation light source (114; 410) comprises a light-emitting diode array (114) which is at least partially in the form of a monolithic light-emitting diode array (114). The monolithic light-emitting diode array (114) comprises at least three light-emitting diodes (426) each with a different emission spectrum.

Fluorescence imaging with minimal area monolithic image sensor

Systems, methods, and devices for fluorescence imaging with a minimal area image sensor are disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation, wherein the pixel array comprises active pixels and optical black pixels. The system includes a black clamp providing offset control for data generated by the pixel array and a controller comprising a processor in electrical communication with the image sensor and the emitter. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 770 nm to about 790 nm.

Excitation with fluorescence light energy

En el presente documento se expone un excitador de energía de luz que puede incluir una o más fuentes de luz. Un excitador de energía de luz puede emitir luz de excitación dirigida hacia una superficie detectora que puede soportar muestras biológicas o químicas. Disclosed herein is a light energy driver that may include one or more light sources. A light energy driver can emit excitation light directed toward a detector surface that can support biological or chemical samples.

Apparatus for determining information associated with reflection characteristics of a surface

Multi-spectral filter profiling and quality control for flow cytometry

Mobile gas and chemical imaging camera

In one embodiment, an infrared (IR) imaging system for determining a concentration of a target species in an object is disclosed. The imaging system can include an optical system including an optical focal plane array (FPA) unit. The optical system can have components defining at least two optical channels thereof, said at least two optical channels being spatially and spectrally different from one another. Each of the at least two optical channels can be positioned to transfer IR radiation incident on the optical system towards the optical FPA. The system can include a processing unit containing a processor that can be configured to acquire multispectral optical data representing said target species from the IR radiation received at the optical FPA. Said optical system and said processing unit can be contained together in a data acquisition and processing module configured to be worn or carried by a person.

Method for monitoring plant surfaces

Mirror unit and optical module

Devices for analyzing media, as well as related egg identification devices and methods.

Solid-state detector and optical system for microchip analyzers

A miniaturized optical excitation and detector system is described for detecting fluorescently labeled analytes in electrophoretic microchips and microarrays. The system uses miniature integrated components, light collection, optical fluorescence filtering, and an amorphous a-Si:H detector for detection. The collection of light is accomplished with proximity gathering and/or a micro-lens system. Optical filtering is accomplished by integrated optical filters. Detection is accomplished utilizing a-Si:H detectors.

measuring device

Measuring device

method and apparatus for determining the siloxane content of a gas by non-dispersive infrared analysis

um método para determinar o teor de siloxano de um gás por análise não dispersiva de infravermelhos compreende os passos de proporcionar luz infravermelha (3) a uma banda de número de onda limitado (f1, f2) selecionada de acordo com as bandas de absorção dos siloxanos, transmitir a luz infravermelha na banda de número de onda limitado a um volume de um gás (8) a ser analisado, detectar a intensidade da luz infravermelha na banda de número de onda limitado passada através do volume de um gás a ser analisado, e determinar o teor de siloxano com base na absorção da luz infravermelha na banda de número de onda limitado. de acordo com a presente invenção, a banda de número de onda limitado se encontra na gama de 800 a 860 cm-1. a method for determining the siloxane content of a gas by non-dispersive infrared analysis comprises the steps of providing infrared light (3) to a limited wave number band (f1, f2) selected according to the absorption bands of the siloxanes , transmitting infrared light in the band of wave number limited to a volume of a gas (8) to be analyzed, detecting the intensity of infrared light in the band of wave limited passed through the volume of a gas to be analyzed, and determine the siloxane content based on the absorption of infrared light in the limited wave number band. according to the present invention, the limited wave number band is in the range of 800 to 860 cm-1.

Multi-spectral filter profiling and quality control for flow cytometry

Disclosed is a system and method for characterizing optical filters in a flow cytometer and optionally checking the operation of detectors in the flow cytometer. In some embodiments, the system may utilize an LED board having an opening through which the fluorescence and side scatter beams, rays, or images pass and light emitting diodes around the opening that emit light having different spectral profiles. The different spectral profiles allow the system to identify the optical filters that are placed in the flow cytometer, to verify detector operation, to assist in instrumentation troubleshooting, and to provide a quantitative reference for detector comparison.

Sensor device for high-resolution detection of target substances

The invention relates to an optical sensor device which measures in a spatially resolving manner. In order to devise such a sensor device with which a contacting measurement of the article to be measured can be carried out and which can be mass-produced, the sensor device is designed such that a transfer of the calibration onto individual sensor devices is possible with high accuracy. According to certain embodiments of the design of the sensor device and of the evaluation methods, interferences with the measurement of the amount of the target substance are minimized.

Spectral imaging of a sample using a plurality of discrete mid-infrared wavelengths

Spectrally analyzing an unknown sample ( 10 A) for the existence of a characteristic includes (i) analyzing a first known sample ( 10 C) having the characteristic and a second known sample ( 10 D) not having the characteristic to identify less than fifty diagnostic spectral features, each diagnostic spectral feature being present at a different diagnostic wavelength in a mid-infrared spectral region; (ii) directing a plurality of interrogation beams ( 16 ) at the unknown sample ( 10 A), each of the interrogation beams ( 16 ) having a different interrogation wavelength, and each interrogation wavelength corresponding to a different one of the diagnostic wavelengths; (iii) acquiring a plurality of separate output images ( 245 ) of the unknown sample ( 10 A), wherein each of the output images ( 245 ) is acquired while the unknown sample is illuminated by a different one of the interrogation beams ( 16 ); and (iv) analyzing less than fifty output images ( 245 ) with a control system ( 28 ) to determine whether the characteristic is present in the unknown sample ( 10 A).

Spectrophotometer calibration methods and systems

A method of calibrating a spectrophotometer comprising a flash lamp. The method comprises receiving light from the flash lamp at a monochromator of the spectrometer, wherein the flash lamp is a short arc noble gas flash lamp with transverse or axially aligned electrodes; configuring the monochromator to progressively transmit the received light at each of a plurality wavelengths of a selected range of wavelengths, wherein the range of wavelengths is associated with a wavelength feature according to a known spectral profile of the flash lamp, and wherein the wavelength feature is a self-absorption feature; and determining a spectrum of the flash lamp, wherein the spectrum comprises a corresponding power or intensity value for each of the plurality of wavelengths. The method further comprises determining a wavelength calibration error value for the wavelength feature by comparing the spectrum with a segment of a predetermined reference spectrum associated with the flash lamp, wherein the segment of the predetermined reference spectrum includes one or more wavelengths associated with the self-absorption feature; and calibrating the spectrophotometer based on the wavelength calibration error value.

Handheld moisture sensor device

A handheld moisture sensing device for use in determining the moisture content of biological material, such as animal feed. Adapted to be pressed against biological material to be analyzed, the device includes a sensor assembly, including a housing with an end structure including a grate adapted to engage the material to be examined, a near infrared (NIR) LED, an NIR light sensor, a glass mounted in the housing adjacent the light source so that light from the light source passes through the glass, a glass heater positioned adjacent the glass for heating the glass.

Determine the equipment, system and method for the optical properties of jewel

确定宝石的光学属性的设备、系统和方法。总体上描述了用于宝石的一个或更多个光学属性的光谱确定的技术。成像装置可以包括被构造成照射宝石的一个或更多个部分的一个或更多个光源，以及被构造成检测响应于照射而来自宝石的部分的反射光的一个或更多个光电检测器。分析模块可以可通信地耦接到成像装置，并且被构造成分析反射光来确定宝石的部分的光学属性。光学属性可以包括宝石的部分的净度、色泽、荧光、双折射、二色性和亮度中的至少一项。在一些示例中，基于一个或更多个所确定的宝石的部分的光学特性可以创建宝石的光学指纹，其中，光学指纹可以唯一标识宝石。

A detector system comprising a plurality of light guides and a spectrometer comprising the detector system

Multispectral filter profiling and quality control for flow cytometry

本发明揭示一种用于表征流式细胞仪中的光学滤波器且任选地检查所述流式细胞仪中的检测器的操作的系统及方法。在一些实施例中，所述系统可利用LED板，所述LED板具有荧光及侧向散射光束、射线或图像所穿过的开口及在所述开口周围的发出具有不同光谱分布曲线的光的发光二极管。所述不同光谱分布曲线允许所述系统识别放置在所述流式细胞仪中的所述光学滤波器、验证检测器操作、辅助仪器故障检修且提供用于检测器比较的定量参考。

Optical device